TY  - CONF
AU  - Peković, Ognjen
AU  - Aleksić, Ivan
AU  - Svorcan, Jelena
AU  - Volf, Goran
AU  - Matić, Dušan
AU  - Kirin, Snežana
AU  - Mitrović, Nenad
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7701
AB  - The pantograph’s purpose is to transfer electrical power from the overhead contact line to the train’s electric propulsion unit. To perform its function adequately, it is necessary to maintain the static contact force between the pantograph and the contact line within the values prescribed by appropriate standards for the entire extension range of the pantograph. The requirement to reach high contact lines complicates the kinematic scheme because the deviation of the trajectory of the pantograph’s collector head from vertical is also prescribed by standards. Further, the structural design of the pantograph is challenging because the greater slenderness ratio of the structure makes it difficult to meet the requirements in terms of stiffness and resistance to vibrations. While at low speeds aerodynamic forces are usually neglected, in high-speed pantographs, they have a significant impact and it is necessary to compensate for them. An aggravating circumstance is the
requirement that the pantograph should work in both knuckle-downstream and knuckle-upstream directions. This paper aims to present the development of a high-speed high–reach pantograph that is developed through the cooperation of company Minel General Electric and the University of Belgrade – Faculty of Mechanical Engineering as well as to present innovative designs of 
 gravitational and aerodynamical compensations that enabled the satisfaction of requested requirements in terms of geometric and static performance.
PB  - University of Belgrade - Faculty of Mechanical Engineering
C3  - International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023
T1  - DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS
SP  - 97
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7701
ER  - 

@conference{
author = "Peković, Ognjen and Aleksić, Ivan and Svorcan, Jelena and Volf, Goran and Matić, Dušan and Kirin, Snežana and Mitrović, Nenad",
year = "2023",
abstract = "The pantograph’s purpose is to transfer electrical power from the overhead contact line to the train’s electric propulsion unit. To perform its function adequately, it is necessary to maintain the static contact force between the pantograph and the contact line within the values prescribed by appropriate standards for the entire extension range of the pantograph. The requirement to reach high contact lines complicates the kinematic scheme because the deviation of the trajectory of the pantograph’s collector head from vertical is also prescribed by standards. Further, the structural design of the pantograph is challenging because the greater slenderness ratio of the structure makes it difficult to meet the requirements in terms of stiffness and resistance to vibrations. While at low speeds aerodynamic forces are usually neglected, in high-speed pantographs, they have a significant impact and it is necessary to compensate for them. An aggravating circumstance is the
requirement that the pantograph should work in both knuckle-downstream and knuckle-upstream directions. This paper aims to present the development of a high-speed high–reach pantograph that is developed through the cooperation of company Minel General Electric and the University of Belgrade – Faculty of Mechanical Engineering as well as to present innovative designs of 
 gravitational and aerodynamical compensations that enabled the satisfaction of requested requirements in terms of geometric and static performance.",
publisher = "University of Belgrade - Faculty of Mechanical Engineering",
journal = "International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023",
title = "DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS",
pages = "97",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7701"
}

Peković, O., Aleksić, I., Svorcan, J., Volf, G., Matić, D., Kirin, S.,& Mitrović, N.. (2023). DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS. in International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023
University of Belgrade - Faculty of Mechanical Engineering., 97.
https://hdl.handle.net/21.15107/rcub_machinery_7701

Peković O, Aleksić I, Svorcan J, Volf G, Matić D, Kirin S, Mitrović N. DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS. in International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023. 2023;:97.
https://hdl.handle.net/21.15107/rcub_machinery_7701 .

Peković, Ognjen, Aleksić, Ivan, Svorcan, Jelena, Volf, Goran, Matić, Dušan, Kirin, Snežana, Mitrović, Nenad, "DEVELOPMENT OF HIGH-REACH PANTOGRAPHS FOR HIGH-SPEED RAILWAYS" in International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2023 (2023):97,
https://hdl.handle.net/21.15107/rcub_machinery_7701 .

TY  - JOUR
AU  - Milovanović, Aleksa
AU  - Golubović, Zorana
AU  - Kirin, Snežana
AU  - Babinsky, Tomas
AU  - Šulak, Ivo
AU  - Milošević, Miloš
AU  - Sedmak, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7147
AB  - Polypropylene (PP) is a relatively new material in fused deposition modeling
(FDM) technology. The main feature of this material is its ability to significantly elongate under
applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the
investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are
layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.
T2  - Journal of Mechanical Science and Technology
T1  - Manufacturing parameter influence on FDM polypropylene tensile properties
VL  - 37
DO  - 10.1007/s12206-023-2305-5
ER  - 

@article{
author = "Milovanović, Aleksa and Golubović, Zorana and Kirin, Snežana and Babinsky, Tomas and Šulak, Ivo and Milošević, Miloš and Sedmak, Aleksandar",
year = "2023",
abstract = "Polypropylene (PP) is a relatively new material in fused deposition modeling
(FDM) technology. The main feature of this material is its ability to significantly elongate under
applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the
investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are
layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.",
journal = "Journal of Mechanical Science and Technology",
title = "Manufacturing parameter influence on FDM polypropylene tensile properties",
volume = "37",
doi = "10.1007/s12206-023-2305-5"
}

Milovanović, A., Golubović, Z., Kirin, S., Babinsky, T., Šulak, I., Milošević, M.,& Sedmak, A.. (2023). Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology, 37.
https://doi.org/10.1007/s12206-023-2305-5

Milovanović A, Golubović Z, Kirin S, Babinsky T, Šulak I, Milošević M, Sedmak A. Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology. 2023;37.
doi:10.1007/s12206-023-2305-5 .

Milovanović, Aleksa, Golubović, Zorana, Kirin, Snežana, Babinsky, Tomas, Šulak, Ivo, Milošević, Miloš, Sedmak, Aleksandar, "Manufacturing parameter influence on FDM polypropylene tensile properties" in Journal of Mechanical Science and Technology, 37 (2023),
https://doi.org/10.1007/s12206-023-2305-5 . .

TY  - JOUR
AU  - Popović-Pantić, Sanja
AU  - Kirin, Snežana
AU  - Vučetić, Ivana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7175
AB  - Innovation is often described as the main driving force of business, which can lead to the company's sustainable growth. Not all innovation dimensions are equally responsible for the sustainability of businesses. Therefore, this study examines the sustainability of women-owned businesses by exploring the influence of selected variables on specific dimensions of companies' innovation capacities. Based on the commonly applied methodologies for assessing the innovation capacity of companies such as IMP³rove and Innovate, the following variables were chosen for the analysis of the impact on innovation in the context of the sustainability of SMEs: 1) annual income and its impact on the decision to invest in innovation 2) the sector of operation and its influence on expectations regarding growth 3) the expectations regarding growth and its impact to a range of innovation dimensions. Different techniques were used, starting with descriptive statistics, then Cross-tabulation, Pearson's chi-square test and ANOVA as the most appropriate techniques to conduct statistical analysis. The research has indicated that annual income does not have a decisive influence on the decision to invest in innovation, as does the sector. However, the sector of operations has a significant influence on expectations regarding growth. Also, there is a statistically significant difference between growth expectations and dimensions such as client base and product development plan, market awareness and perception, innovation strategy, decision-making process, employee training, business networking, and external advice. While exploring the innovation activity of launching new products/services, we came to a finding that is potentially risky for the sustainability of women’s businesses, namely that 50% of the companies in the sample offer only one product to one customer. That is why it is important that companies that have a high awareness of the need to innovate diversify their product and client portfolio and thus ensure greater independence on the market and, therefore, sustainability.
PB  - Institute of Economic Sciences
T2  - Journal of Women's Entrepreneurship and Education, Special issue "Strengthening opportunities and solutions for women entrepreneurs in Asia and Europe"
T1  - The Sustainability Analysis of Women-owned Businesses Examined Through the Impact of Selected Variables on Dimensions of Innovation Capacity
EP  - 148
SP  - 128
DO  - 10.28934/jwee23.pp128-145
ER  - 

@article{
author = "Popović-Pantić, Sanja and Kirin, Snežana and Vučetić, Ivana",
year = "2023",
abstract = "Innovation is often described as the main driving force of business, which can lead to the company's sustainable growth. Not all innovation dimensions are equally responsible for the sustainability of businesses. Therefore, this study examines the sustainability of women-owned businesses by exploring the influence of selected variables on specific dimensions of companies' innovation capacities. Based on the commonly applied methodologies for assessing the innovation capacity of companies such as IMP³rove and Innovate, the following variables were chosen for the analysis of the impact on innovation in the context of the sustainability of SMEs: 1) annual income and its impact on the decision to invest in innovation 2) the sector of operation and its influence on expectations regarding growth 3) the expectations regarding growth and its impact to a range of innovation dimensions. Different techniques were used, starting with descriptive statistics, then Cross-tabulation, Pearson's chi-square test and ANOVA as the most appropriate techniques to conduct statistical analysis. The research has indicated that annual income does not have a decisive influence on the decision to invest in innovation, as does the sector. However, the sector of operations has a significant influence on expectations regarding growth. Also, there is a statistically significant difference between growth expectations and dimensions such as client base and product development plan, market awareness and perception, innovation strategy, decision-making process, employee training, business networking, and external advice. While exploring the innovation activity of launching new products/services, we came to a finding that is potentially risky for the sustainability of women’s businesses, namely that 50% of the companies in the sample offer only one product to one customer. That is why it is important that companies that have a high awareness of the need to innovate diversify their product and client portfolio and thus ensure greater independence on the market and, therefore, sustainability.",
publisher = "Institute of Economic Sciences",
journal = "Journal of Women's Entrepreneurship and Education, Special issue "Strengthening opportunities and solutions for women entrepreneurs in Asia and Europe"",
title = "The Sustainability Analysis of Women-owned Businesses Examined Through the Impact of Selected Variables on Dimensions of Innovation Capacity",
pages = "148-128",
doi = "10.28934/jwee23.pp128-145"
}

Popović-Pantić, S., Kirin, S.,& Vučetić, I.. (2023). The Sustainability Analysis of Women-owned Businesses Examined Through the Impact of Selected Variables on Dimensions of Innovation Capacity. in Journal of Women's Entrepreneurship and Education, Special issue "Strengthening opportunities and solutions for women entrepreneurs in Asia and Europe"
Institute of Economic Sciences., 128-148.
https://doi.org/10.28934/jwee23.pp128-145

Popović-Pantić S, Kirin S, Vučetić I. The Sustainability Analysis of Women-owned Businesses Examined Through the Impact of Selected Variables on Dimensions of Innovation Capacity. in Journal of Women's Entrepreneurship and Education, Special issue "Strengthening opportunities and solutions for women entrepreneurs in Asia and Europe". 2023;:128-148.
doi:10.28934/jwee23.pp128-145 .

Popović-Pantić, Sanja, Kirin, Snežana, Vučetić, Ivana, "The Sustainability Analysis of Women-owned Businesses Examined Through the Impact of Selected Variables on Dimensions of Innovation Capacity" in Journal of Women's Entrepreneurship and Education, Special issue "Strengthening opportunities and solutions for women entrepreneurs in Asia and Europe" (2023):128-148,
https://doi.org/10.28934/jwee23.pp128-145 . .

TY  - JOUR
AU  - Mastilović, Sreten
AU  - Đorđević, Branislav
AU  - Sedmak, Aleksandar
AU  - Kirin, Snežana
PY  - 2023
UR  - http://divk.inovacionicentar.rs/ivk/ivk23/OF2302-1.html
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7105
AB  - The phenomenon of ductile-to-brittle transition (DBT) in ferritic steels, widely used in design of nuclear reactor pressure vessels, has been a pervasive semi-centennial research topic. Due to the extremely pronounced experimental data scatter, the statistical approach to characterization of this problem has become inevitable from the earliest analyses. In the present study, the fracture toughness parameters derived from the EURO fracture toughness dataset for 22NiMoCr37 reactor steel are used with the aim to explore the utility of the recently proposed two-step-scaling method. Two widely different temperatures (-154 °C and -91 °C; belonging to the lower shelf and the DBT transition regions of fracture toughness, in respect) are selected to demonstrate the accuracy of extrapolation and interpolation of the fracture toughness CDF (cumulative distribution function) and the pertinent issues related to the method application. The fracture toughness measure used is the critical value of the stress intensity factor used in the master curve KJc (MPa√m). The obtained predictions are in good agreement with the experimental results and well within the inherent experimental data scatter. The prediction of the fracture toughness CDF obtained by extrapolation using the novel two-step-scaling method is reasonably conservative.
PB  - Društvo za integritet i vek konstrukcija „Prof. dr Stojan Sedmak“, Institut za ispitivanje materijala (IMS), Beograd
T2  - Structural Integrity and Life -
T1  - SIZE EFFECT ASSESSMENT OF KJc EXPERIMENTAL DATA USING THE TWO-STEP-SCALING METHOD
EP  - 110
IS  - 2
SP  - 105
VL  - 23
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7105
ER  - 

@article{
author = "Mastilović, Sreten and Đorđević, Branislav and Sedmak, Aleksandar and Kirin, Snežana",
year = "2023",
abstract = "The phenomenon of ductile-to-brittle transition (DBT) in ferritic steels, widely used in design of nuclear reactor pressure vessels, has been a pervasive semi-centennial research topic. Due to the extremely pronounced experimental data scatter, the statistical approach to characterization of this problem has become inevitable from the earliest analyses. In the present study, the fracture toughness parameters derived from the EURO fracture toughness dataset for 22NiMoCr37 reactor steel are used with the aim to explore the utility of the recently proposed two-step-scaling method. Two widely different temperatures (-154 °C and -91 °C; belonging to the lower shelf and the DBT transition regions of fracture toughness, in respect) are selected to demonstrate the accuracy of extrapolation and interpolation of the fracture toughness CDF (cumulative distribution function) and the pertinent issues related to the method application. The fracture toughness measure used is the critical value of the stress intensity factor used in the master curve KJc (MPa√m). The obtained predictions are in good agreement with the experimental results and well within the inherent experimental data scatter. The prediction of the fracture toughness CDF obtained by extrapolation using the novel two-step-scaling method is reasonably conservative.",
publisher = "Društvo za integritet i vek konstrukcija „Prof. dr Stojan Sedmak“, Institut za ispitivanje materijala (IMS), Beograd",
journal = "Structural Integrity and Life -",
title = "SIZE EFFECT ASSESSMENT OF KJc EXPERIMENTAL DATA USING THE TWO-STEP-SCALING METHOD",
pages = "110-105",
number = "2",
volume = "23",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7105"
}

Mastilović, S., Đorđević, B., Sedmak, A.,& Kirin, S.. (2023). SIZE EFFECT ASSESSMENT OF KJc EXPERIMENTAL DATA USING THE TWO-STEP-SCALING METHOD. in Structural Integrity and Life -
Društvo za integritet i vek konstrukcija „Prof. dr Stojan Sedmak“, Institut za ispitivanje materijala (IMS), Beograd., 23(2), 105-110.
https://hdl.handle.net/21.15107/rcub_machinery_7105

Mastilović S, Đorđević B, Sedmak A, Kirin S. SIZE EFFECT ASSESSMENT OF KJc EXPERIMENTAL DATA USING THE TWO-STEP-SCALING METHOD. in Structural Integrity and Life -. 2023;23(2):105-110.
https://hdl.handle.net/21.15107/rcub_machinery_7105 .

Mastilović, Sreten, Đorđević, Branislav, Sedmak, Aleksandar, Kirin, Snežana, "SIZE EFFECT ASSESSMENT OF KJc EXPERIMENTAL DATA USING THE TWO-STEP-SCALING METHOD" in Structural Integrity and Life -, 23, no. 2 (2023):105-110,
https://hdl.handle.net/21.15107/rcub_machinery_7105 .

TY  - JOUR
AU  - Milovanović, Aleksa
AU  - Golubović, Zorana
AU  - Kirin, Snežana
AU  - Babinský, Tomáš
AU  - Šulák, Ivo
AU  - Milošević, Miloš
AU  - Sedmak, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7643
AB  - Polypropylene (PP) is a relatively new material in fused deposition modeling (FDM) technology. The main feature of this material is its ability to significantly elongate under applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.
T2  - Journal of Mechanical Science and Technology
T1  - Manufacturing parameter influence on FDM polypropylene tensile properties
EP  - 7
IS  - 11
SP  - 1
VL  - 37
DO  - 10.1007/s12206-023-2305-5
ER  - 

@article{
author = "Milovanović, Aleksa and Golubović, Zorana and Kirin, Snežana and Babinský, Tomáš and Šulák, Ivo and Milošević, Miloš and Sedmak, Aleksandar",
year = "2023",
abstract = "Polypropylene (PP) is a relatively new material in fused deposition modeling (FDM) technology. The main feature of this material is its ability to significantly elongate under applied load, unlike any other thermoplastic material used in FDM technology. Not much research has been conducted on this FDM material so far, hence, the subject of this paper is the investigation of printing parameters’ influence on PP tensile properties. Targeted parameters are layer height, infill density, and the orientation of raster lines, resulting in four different manufacturing regimes. To have a better insight into the experimental results, the data are analysed using ANOVA statistical method with Tukey HSD post hoc test. Obtained statistical results have proven the printing parameter’s influence on tensile results, emphasizing the influence on elastic modulus. Here, Tukey test results show the maximal number of homogeneous subsets evidencing that all printing parameters have an influence on elastic modulus values.",
journal = "Journal of Mechanical Science and Technology",
title = "Manufacturing parameter influence on FDM polypropylene tensile properties",
pages = "7-1",
number = "11",
volume = "37",
doi = "10.1007/s12206-023-2305-5"
}

Milovanović, A., Golubović, Z., Kirin, S., Babinský, T., Šulák, I., Milošević, M.,& Sedmak, A.. (2023). Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology, 37(11), 1-7.
https://doi.org/10.1007/s12206-023-2305-5

Milovanović A, Golubović Z, Kirin S, Babinský T, Šulák I, Milošević M, Sedmak A. Manufacturing parameter influence on FDM polypropylene tensile properties. in Journal of Mechanical Science and Technology. 2023;37(11):1-7.
doi:10.1007/s12206-023-2305-5 .

Milovanović, Aleksa, Golubović, Zorana, Kirin, Snežana, Babinský, Tomáš, Šulák, Ivo, Milošević, Miloš, Sedmak, Aleksandar, "Manufacturing parameter influence on FDM polypropylene tensile properties" in Journal of Mechanical Science and Technology, 37, no. 11 (2023):1-7,
https://doi.org/10.1007/s12206-023-2305-5 . .

TY  - CONF
AU  - Spasojević Brkić, Vesna
AU  - Golubović, Tamara
AU  - Sedmak, Aleksandar
AU  - Kirin, Snežana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6771
AB  - During the last couple of decades, there was a definitive increase in the need for process safety control due to working conditions and systems becoming more complex, up to a point where the existing methodologies could no longer provide satisfying results. Hence, the topic of this paper involves the development of an original methodology for risk assessment of pressure equipment, based on fracture mechanics and the influence of human and organizational factors. This methodology resulted from the systemization of existing knowledge in the filed of process safety, innovations and integration of existing tools and models for risk assessment, as well as from improvements in working with pressure equipment in general and combining of above approaches with fracture mechanics, which allowed the solving of main issues that existed in these fields. This was achieved by establishing and verifying new methodologies and models, with particular focus on simplicity and adaptability to practical application, along with solving of problems related to the lack of systematic and practical approach to assessing of the influence of human and organizational factors on risk. In order to verify the newly proposed methodology, a case study was conducted in Serbia, related to Bajina Bašta hydropower plant, which confirmed the accuracy and simplicity of the methodology in question. It was shown that the application of this methodology enabled a systematic approach to quantitative risk assessment for pressure equipment in any and all companies which work with such equipment, regardless of their size or field of work. Thus, it was concluded that the proposed methodology has offered valuable insights, both to the scientific and public communities, through its improvement of process safety.
C3  - 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia
T1  - Methodology for pressure equipment risk assessment based on fracture mechanics and influence of human and organizational factors
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6771
ER  - 

@conference{
author = "Spasojević Brkić, Vesna and Golubović, Tamara and Sedmak, Aleksandar and Kirin, Snežana",
year = "2023",
abstract = "During the last couple of decades, there was a definitive increase in the need for process safety control due to working conditions and systems becoming more complex, up to a point where the existing methodologies could no longer provide satisfying results. Hence, the topic of this paper involves the development of an original methodology for risk assessment of pressure equipment, based on fracture mechanics and the influence of human and organizational factors. This methodology resulted from the systemization of existing knowledge in the filed of process safety, innovations and integration of existing tools and models for risk assessment, as well as from improvements in working with pressure equipment in general and combining of above approaches with fracture mechanics, which allowed the solving of main issues that existed in these fields. This was achieved by establishing and verifying new methodologies and models, with particular focus on simplicity and adaptability to practical application, along with solving of problems related to the lack of systematic and practical approach to assessing of the influence of human and organizational factors on risk. In order to verify the newly proposed methodology, a case study was conducted in Serbia, related to Bajina Bašta hydropower plant, which confirmed the accuracy and simplicity of the methodology in question. It was shown that the application of this methodology enabled a systematic approach to quantitative risk assessment for pressure equipment in any and all companies which work with such equipment, regardless of their size or field of work. Thus, it was concluded that the proposed methodology has offered valuable insights, both to the scientific and public communities, through its improvement of process safety.",
journal = "2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia",
title = "Methodology for pressure equipment risk assessment based on fracture mechanics and influence of human and organizational factors",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6771"
}

Spasojević Brkić, V., Golubović, T., Sedmak, A.,& Kirin, S.. (2023). Methodology for pressure equipment risk assessment based on fracture mechanics and influence of human and organizational factors. in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia, 2.
https://hdl.handle.net/21.15107/rcub_machinery_6771

Spasojević Brkić V, Golubović T, Sedmak A, Kirin S. Methodology for pressure equipment risk assessment based on fracture mechanics and influence of human and organizational factors. in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia. 2023;2.
https://hdl.handle.net/21.15107/rcub_machinery_6771 .

Spasojević Brkić, Vesna, Golubović, Tamara, Sedmak, Aleksandar, Kirin, Snežana, "Methodology for pressure equipment risk assessment based on fracture mechanics and influence of human and organizational factors" in 2nd International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), April 2-4, 2023, Belgrade, Serbia, 2 (2023),
https://hdl.handle.net/21.15107/rcub_machinery_6771 .

TY  - CHAP
AU  - Kirin, Snežana
AU  - Vučetić, Ivana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7173
AB  - In the constantly changing business environment, innovations enable companies to achieve competitiveness and expand to new markets. Measuring a company’s ability to innovate is important for both theoretical consideration and practical application. This paper presents the analysis of 21 dimensions of the innovation capacity of small and medium enterprises in Serbia. The observed sample included 106 companies of various size and activities. The following main factors that affect the innovation capacity of companies had been identified: adaptability and growth projection, business network, management style, knowledge management, company resources and the speed of product development for the market. The identified factors were used to predict the future of the company’s cooperation with the academy, and whether the company will undertake activities to protect intellectual property rights, which are both considered important parts of the innovation process in companies. The results of the research indicate the important factors that determine a company’s survival in modern market conditions. It was obtained that companies with a developed business network are more willing to cooperate with the academic community, while the management style has the greatest influence on the protection of intellectual property.
PB  - Springer
T2  - Lecture Notes in Networks and Systems
T1  - The Main Factors that Determine the Company’s Innovations–Empirical Research of Companies in Serbia
EP  - 96
SP  - 79
VL  - 564
DO  - 10.1007/978-3-031-19499-3_4
ER  - 

@inbook{
author = "Kirin, Snežana and Vučetić, Ivana",
year = "2023",
abstract = "In the constantly changing business environment, innovations enable companies to achieve competitiveness and expand to new markets. Measuring a company’s ability to innovate is important for both theoretical consideration and practical application. This paper presents the analysis of 21 dimensions of the innovation capacity of small and medium enterprises in Serbia. The observed sample included 106 companies of various size and activities. The following main factors that affect the innovation capacity of companies had been identified: adaptability and growth projection, business network, management style, knowledge management, company resources and the speed of product development for the market. The identified factors were used to predict the future of the company’s cooperation with the academy, and whether the company will undertake activities to protect intellectual property rights, which are both considered important parts of the innovation process in companies. The results of the research indicate the important factors that determine a company’s survival in modern market conditions. It was obtained that companies with a developed business network are more willing to cooperate with the academic community, while the management style has the greatest influence on the protection of intellectual property.",
publisher = "Springer",
journal = "Lecture Notes in Networks and Systems",
booktitle = "The Main Factors that Determine the Company’s Innovations–Empirical Research of Companies in Serbia",
pages = "96-79",
volume = "564",
doi = "10.1007/978-3-031-19499-3_4"
}

Kirin, S.,& Vučetić, I.. (2023). The Main Factors that Determine the Company’s Innovations–Empirical Research of Companies in Serbia. in Lecture Notes in Networks and Systems
Springer., 564, 79-96.
https://doi.org/10.1007/978-3-031-19499-3_4

Kirin S, Vučetić I. The Main Factors that Determine the Company’s Innovations–Empirical Research of Companies in Serbia. in Lecture Notes in Networks and Systems. 2023;564:79-96.
doi:10.1007/978-3-031-19499-3_4 .

Kirin, Snežana, Vučetić, Ivana, "The Main Factors that Determine the Company’s Innovations–Empirical Research of Companies in Serbia" in Lecture Notes in Networks and Systems, 564 (2023):79-96,
https://doi.org/10.1007/978-3-031-19499-3_4 . .

TY  - JOUR
AU  - Vučetić, Ivana
AU  - Kirin, Snežana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7424
AB  - The innovation of companies is of vital importance because it allows them to penetrate markets and provides better connections with emerging markets, which can lead to greater
opportunities. Measuring innovation is an important activity both for theoretical and practical
tests. This paper presents research on the innovation capacities of small and medium enterprises in Serbia according to the model consisting of 21 dimensions. The observed sample consists of
106 companies, of different sizes, whose activities are grouped into production and service activities. Similarities and differences in the innovative capacities of companies concerning their activity and in relation to their size were analyzed. The results of the research indicate the main problems that small and medium-sized enterprises are facing in order to improve their innovative capacities such as the market horizon, inadequate management systems, short-term planning, and
insufficient connectivity with partners and academia.
PB  - Association of Economists and Managers of the Balkans – UdEkoM Balkan
T2  - Balkans Journal of Emerging Trends in Social Sciences
T1  - Innovation Capacities as the Key to Survival – A Case Study in Serbia
EP  - 124
IS  - 2
SP  - 115
VL  - 5
DO  - 10.31410/Balkans.JETSS.2022.5.2.115-124
ER  - 

@article{
author = "Vučetić, Ivana and Kirin, Snežana",
year = "2022",
abstract = "The innovation of companies is of vital importance because it allows them to penetrate markets and provides better connections with emerging markets, which can lead to greater
opportunities. Measuring innovation is an important activity both for theoretical and practical
tests. This paper presents research on the innovation capacities of small and medium enterprises in Serbia according to the model consisting of 21 dimensions. The observed sample consists of
106 companies, of different sizes, whose activities are grouped into production and service activities. Similarities and differences in the innovative capacities of companies concerning their activity and in relation to their size were analyzed. The results of the research indicate the main problems that small and medium-sized enterprises are facing in order to improve their innovative capacities such as the market horizon, inadequate management systems, short-term planning, and
insufficient connectivity with partners and academia.",
publisher = "Association of Economists and Managers of the Balkans – UdEkoM Balkan",
journal = "Balkans Journal of Emerging Trends in Social Sciences",
title = "Innovation Capacities as the Key to Survival – A Case Study in Serbia",
pages = "124-115",
number = "2",
volume = "5",
doi = "10.31410/Balkans.JETSS.2022.5.2.115-124"
}

Vučetić, I.,& Kirin, S.. (2022). Innovation Capacities as the Key to Survival – A Case Study in Serbia. in Balkans Journal of Emerging Trends in Social Sciences
Association of Economists and Managers of the Balkans – UdEkoM Balkan., 5(2), 115-124.
https://doi.org/10.31410/Balkans.JETSS.2022.5.2.115-124

Vučetić I, Kirin S. Innovation Capacities as the Key to Survival – A Case Study in Serbia. in Balkans Journal of Emerging Trends in Social Sciences. 2022;5(2):115-124.
doi:10.31410/Balkans.JETSS.2022.5.2.115-124 .

Vučetić, Ivana, Kirin, Snežana, "Innovation Capacities as the Key to Survival – A Case Study in Serbia" in Balkans Journal of Emerging Trends in Social Sciences, 5, no. 2 (2022):115-124,
https://doi.org/10.31410/Balkans.JETSS.2022.5.2.115-124 . .

TY  - JOUR
AU  - Kirin, Snežana
AU  - Vučetić, Ivana
AU  - Vasojević, Nena
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7176
AB  - Research Question: This article identifies the most prominent lean wastes in the education process in primary schools in Serbia and the most efficient lean tools for their reduction. Objective: Lean management has been recognized as a valuable strategy suitable for application in various fields. Its implementation in the field of education has shown a rather slow progress, and the Serbian education system is not an exception. Idea: The idea of the research was to investigate the possible outcomes of the lean management implementation in primary schools in Serbia, and its possible benefits. Data: For this purpose, a specialized questionnaire concerning lean wastes and lean tools was designed intended for class and subject teachers. Tools: Statistical data analyses were used to determine the relationships between variables, and the Weighted Scoring method was applied to identify the most represented lean wastes in the education process, as well as the prioritization of lean tools. Findings:  According to the results, the factor of the lean tools impact in regard to the lean wastes reduction was evaluated as “higher than 3” (on a scale of 1-5), which confirmed the efficiency of the considered lean tools in the lean wastes reduction. Also, the significant differences between the public and the private education sectors in terms of the lean application are shown, especially regarding the type of curriculum present (national or international). Contribution: The research has shown that lean management could be successfully applied in primary schools, in order to improve school organization and the teaching process flow, which highly contributes to the school's overall competitiveness. The guidelines for the lean management implementation are given as well as the recommendations to the creators of education policies. Certain limitations should be taken into account, regarding the restricted number of schools involved and specific sample group.
PB  - University of Belgrade, Faculty of Organizational Sciences
T2  - Journal of Sustainable Business and Management Solutions in Emerging Economies
T1  - Lean Tools for Improving the Teaching Process in Serbia - Empirical Research
EP  - 10
IS  - 1
SP  - 1
VL  - 27
DO  - 10.7595/management.fon.2020.0013
ER  - 

@article{
author = "Kirin, Snežana and Vučetić, Ivana and Vasojević, Nena",
year = "2022",
abstract = "Research Question: This article identifies the most prominent lean wastes in the education process in primary schools in Serbia and the most efficient lean tools for their reduction. Objective: Lean management has been recognized as a valuable strategy suitable for application in various fields. Its implementation in the field of education has shown a rather slow progress, and the Serbian education system is not an exception. Idea: The idea of the research was to investigate the possible outcomes of the lean management implementation in primary schools in Serbia, and its possible benefits. Data: For this purpose, a specialized questionnaire concerning lean wastes and lean tools was designed intended for class and subject teachers. Tools: Statistical data analyses were used to determine the relationships between variables, and the Weighted Scoring method was applied to identify the most represented lean wastes in the education process, as well as the prioritization of lean tools. Findings:  According to the results, the factor of the lean tools impact in regard to the lean wastes reduction was evaluated as “higher than 3” (on a scale of 1-5), which confirmed the efficiency of the considered lean tools in the lean wastes reduction. Also, the significant differences between the public and the private education sectors in terms of the lean application are shown, especially regarding the type of curriculum present (national or international). Contribution: The research has shown that lean management could be successfully applied in primary schools, in order to improve school organization and the teaching process flow, which highly contributes to the school's overall competitiveness. The guidelines for the lean management implementation are given as well as the recommendations to the creators of education policies. Certain limitations should be taken into account, regarding the restricted number of schools involved and specific sample group.",
publisher = "University of Belgrade, Faculty of Organizational Sciences",
journal = "Journal of Sustainable Business and Management Solutions in Emerging Economies",
title = "Lean Tools for Improving the Teaching Process in Serbia - Empirical Research",
pages = "10-1",
number = "1",
volume = "27",
doi = "10.7595/management.fon.2020.0013"
}

Kirin, S., Vučetić, I.,& Vasojević, N.. (2022). Lean Tools for Improving the Teaching Process in Serbia - Empirical Research. in Journal of Sustainable Business and Management Solutions in Emerging Economies
University of Belgrade, Faculty of Organizational Sciences., 27(1), 1-10.
https://doi.org/10.7595/management.fon.2020.0013

Kirin S, Vučetić I, Vasojević N. Lean Tools for Improving the Teaching Process in Serbia - Empirical Research. in Journal of Sustainable Business and Management Solutions in Emerging Economies. 2022;27(1):1-10.
doi:10.7595/management.fon.2020.0013 .

Kirin, Snežana, Vučetić, Ivana, Vasojević, Nena, "Lean Tools for Improving the Teaching Process in Serbia - Empirical Research" in Journal of Sustainable Business and Management Solutions in Emerging Economies, 27, no. 1 (2022):1-10,
https://doi.org/10.7595/management.fon.2020.0013 . .

TY  - JOUR
AU  - Zaidi, Radzeya
AU  - Sedmak, Aleksandar
AU  - Kirin, Snežana
AU  - Martić, Igor
AU  - Šarkoćević, Živče
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3820
AB  - Structural integrity and life assessment of oil rig pipes using analytical method is presented and applied to an oil drilling rig pipe. The new concept based on risk evaluation according to probability and consequence of failure is used. Analytical expressions for surface cracks, provided by Raju and Newman, are used to calculate stress intensity factors for different crack geometries. Furthermore, the rig welded pipe failure probability is estimated by simple application of the Failure Assessment Diagram (FAD) and used together with potential consequences to evaluate the risk level by application of risk matrix. The same logic is employed in the case of cyclic loading, i.e. fatigue crack growth, by using Paris law to calculate crack length depending on the number of cycles. Simple numerical integration is applied to take into account the change of the geometry parameter Y due to increasing depth of a surface crack.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Structural integrity and life assessment of oil drilling rig pipes using analytical method
EP  - 68
IS  - 1
SP  - 63
VL  - 22
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3820
ER  - 

@article{
author = "Zaidi, Radzeya and Sedmak, Aleksandar and Kirin, Snežana and Martić, Igor and Šarkoćević, Živče",
year = "2022",
abstract = "Structural integrity and life assessment of oil rig pipes using analytical method is presented and applied to an oil drilling rig pipe. The new concept based on risk evaluation according to probability and consequence of failure is used. Analytical expressions for surface cracks, provided by Raju and Newman, are used to calculate stress intensity factors for different crack geometries. Furthermore, the rig welded pipe failure probability is estimated by simple application of the Failure Assessment Diagram (FAD) and used together with potential consequences to evaluate the risk level by application of risk matrix. The same logic is employed in the case of cyclic loading, i.e. fatigue crack growth, by using Paris law to calculate crack length depending on the number of cycles. Simple numerical integration is applied to take into account the change of the geometry parameter Y due to increasing depth of a surface crack.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Structural integrity and life assessment of oil drilling rig pipes using analytical method",
pages = "68-63",
number = "1",
volume = "22",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3820"
}

Zaidi, R., Sedmak, A., Kirin, S., Martić, I.,& Šarkoćević, Ž.. (2022). Structural integrity and life assessment of oil drilling rig pipes using analytical method. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 22(1), 63-68.
https://hdl.handle.net/21.15107/rcub_machinery_3820

Zaidi R, Sedmak A, Kirin S, Martić I, Šarkoćević Ž. Structural integrity and life assessment of oil drilling rig pipes using analytical method. in Structural Integrity and Life. 2022;22(1):63-68.
https://hdl.handle.net/21.15107/rcub_machinery_3820 .

Zaidi, Radzeya, Sedmak, Aleksandar, Kirin, Snežana, Martić, Igor, Šarkoćević, Živče, "Structural integrity and life assessment of oil drilling rig pipes using analytical method" in Structural Integrity and Life, 22, no. 1 (2022):63-68,
https://hdl.handle.net/21.15107/rcub_machinery_3820 .

TY  - JOUR
AU  - Sedmak, Aleksandar
AU  - Vučetić, Filip
AU  - Čolić, Katarina
AU  - Grbović, Aleksandar
AU  - Sedmak, Simon
AU  - Kirin, Snežana
AU  - Berto, Filippo
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3710
AB  - This study is aimed to analyse fatigue life of orthopedic plates due to cracks initiated in the stress concentration areas. Material used for this analysis was typical orthopedic alloy, Ti-6Al-4V, strong but not very ductile, meaning also sensivite to cracking, as indicated by its mechanical properties, such as tensile strength, impact toughness and fracture toughness, as well as by high fatigue crack rate, all of them tested and analysed here. Extended finite element method (XFEM) in ANSYS software was used for simulating the fatigue crack growth in 5 orthopedic plates with different geometries. Results for crack length and stress intensity factor vs. number of cycles are given, indicating plate D as the best option regarding residual life. Crack paths are analysed in all 5 plates to explain such a behaviour, indicating benefits of initial crack growth into length, followed by growth into depth. Also, the effect of geometry of plates is considered to explain differences in life predictions for 5 different plates.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Fatigue life assessment of orthopedic plates made of Ti6Al4V
VL  - 137
DO  - 10.1016/j.engfailanal.2022.106259
ER  - 

@article{
author = "Sedmak, Aleksandar and Vučetić, Filip and Čolić, Katarina and Grbović, Aleksandar and Sedmak, Simon and Kirin, Snežana and Berto, Filippo",
year = "2022",
abstract = "This study is aimed to analyse fatigue life of orthopedic plates due to cracks initiated in the stress concentration areas. Material used for this analysis was typical orthopedic alloy, Ti-6Al-4V, strong but not very ductile, meaning also sensivite to cracking, as indicated by its mechanical properties, such as tensile strength, impact toughness and fracture toughness, as well as by high fatigue crack rate, all of them tested and analysed here. Extended finite element method (XFEM) in ANSYS software was used for simulating the fatigue crack growth in 5 orthopedic plates with different geometries. Results for crack length and stress intensity factor vs. number of cycles are given, indicating plate D as the best option regarding residual life. Crack paths are analysed in all 5 plates to explain such a behaviour, indicating benefits of initial crack growth into length, followed by growth into depth. Also, the effect of geometry of plates is considered to explain differences in life predictions for 5 different plates.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Fatigue life assessment of orthopedic plates made of Ti6Al4V",
volume = "137",
doi = "10.1016/j.engfailanal.2022.106259"
}

Sedmak, A., Vučetić, F., Čolić, K., Grbović, A., Sedmak, S., Kirin, S.,& Berto, F.. (2022). Fatigue life assessment of orthopedic plates made of Ti6Al4V. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 137.
https://doi.org/10.1016/j.engfailanal.2022.106259

Sedmak A, Vučetić F, Čolić K, Grbović A, Sedmak S, Kirin S, Berto F. Fatigue life assessment of orthopedic plates made of Ti6Al4V. in Engineering Failure Analysis. 2022;137.
doi:10.1016/j.engfailanal.2022.106259 .

Sedmak, Aleksandar, Vučetić, Filip, Čolić, Katarina, Grbović, Aleksandar, Sedmak, Simon, Kirin, Snežana, Berto, Filippo, "Fatigue life assessment of orthopedic plates made of Ti6Al4V" in Engineering Failure Analysis, 137 (2022),
https://doi.org/10.1016/j.engfailanal.2022.106259 . .

TY  - JOUR
AU  - Sedmak, Aleksandar
AU  - Zaidi, Radzeya
AU  - Vujicić, Borivoje
AU  - Šarkočević, Živče
AU  - Kirin, Snežana
AU  - Stamenić, Zoran
AU  - Đukić, Miloš
AU  - Bakić, Gordana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3703
AB  - Corrosion effects on structural integrity and life of oil rig welded pipes are analysed by experimental, analytical, and numerical methods. Experiments were performed using standard tensile specimens and CT specimens for static loading, Charpy specimens for impact loading, and 3 Point Bending specimens for fatigue crack growth with amplitude loading. In each case new and old pipes were used to evaluate corrosion effects. Results indicated negligible corrosion effects in the case of tensile properties and impact toughness, and strong effects in the case of fracture toughness and especially fatigue crack growth rates, increasing the risk of static failure and reducing significantly structural life. Analytical expressions are used for oil rig pipe structural integrity and life assessment to quantify these effects. Recently introduced risk-based approach is applied to analyse oil rig drill pipe with a corrosion defect treated as a surface crack.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska Industrija
T1  - Corrosion effects on structural integrity and life of oil rig drill pipes
EP  - 177
IS  - 3
SP  - 167
VL  - 76
DO  - 10.2298/HEMIND220222014S
ER  - 

@article{
author = "Sedmak, Aleksandar and Zaidi, Radzeya and Vujicić, Borivoje and Šarkočević, Živče and Kirin, Snežana and Stamenić, Zoran and Đukić, Miloš and Bakić, Gordana",
year = "2022",
abstract = "Corrosion effects on structural integrity and life of oil rig welded pipes are analysed by experimental, analytical, and numerical methods. Experiments were performed using standard tensile specimens and CT specimens for static loading, Charpy specimens for impact loading, and 3 Point Bending specimens for fatigue crack growth with amplitude loading. In each case new and old pipes were used to evaluate corrosion effects. Results indicated negligible corrosion effects in the case of tensile properties and impact toughness, and strong effects in the case of fracture toughness and especially fatigue crack growth rates, increasing the risk of static failure and reducing significantly structural life. Analytical expressions are used for oil rig pipe structural integrity and life assessment to quantify these effects. Recently introduced risk-based approach is applied to analyse oil rig drill pipe with a corrosion defect treated as a surface crack.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska Industrija",
title = "Corrosion effects on structural integrity and life of oil rig drill pipes",
pages = "177-167",
number = "3",
volume = "76",
doi = "10.2298/HEMIND220222014S"
}

Sedmak, A., Zaidi, R., Vujicić, B., Šarkočević, Ž., Kirin, S., Stamenić, Z., Đukić, M.,& Bakić, G.. (2022). Corrosion effects on structural integrity and life of oil rig drill pipes. in Hemijska Industrija
Savez hemijskih inženjera, Beograd., 76(3), 167-177.
https://doi.org/10.2298/HEMIND220222014S

Sedmak A, Zaidi R, Vujicić B, Šarkočević Ž, Kirin S, Stamenić Z, Đukić M, Bakić G. Corrosion effects on structural integrity and life of oil rig drill pipes. in Hemijska Industrija. 2022;76(3):167-177.
doi:10.2298/HEMIND220222014S .

Sedmak, Aleksandar, Zaidi, Radzeya, Vujicić, Borivoje, Šarkočević, Živče, Kirin, Snežana, Stamenić, Zoran, Đukić, Miloš, Bakić, Gordana, "Corrosion effects on structural integrity and life of oil rig drill pipes" in Hemijska Industrija, 76, no. 3 (2022):167-177,
https://doi.org/10.2298/HEMIND220222014S . .

TY  - CONF
AU  - Đorđević, Branislav
AU  - Sedmak, Aleksandar
AU  - Mastilović, Sreten
AU  - Popović, Olivera
AU  - Kirin, Snežana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6274
AB  - This paper presents a review of different approaches through history concerning DTB transition phenomenon of ferritic steels and their characterization using FM concept, from the earliest studies based on LEFM to the application of the EPFM concept. The large scattering of the experimental fracture toughness data, characteristic of all ferritic steels in the transition temperature region, has imposed the need of including statistical methods for data processing. Such approach that began in the 1970s can be encountered even nowadays as the base of fracture toughness data interpretation in DTB problems. An overview of studies with statistical interpretation of experimental data in the transition temperature region is also given. Aforementioned provides a foundation for novel approaches in DTB transition problems, which include size effects and scaling of geometrically similar specimens.
C3  - Procedia Structural Integrity
T1  - History of ductile-to-brittle transition problem of ferritic steels
EP  - 95
SP  - 88
VL  - 42
DO  - 10.1016/j.prostr.2022.12.010
ER  - 

@conference{
author = "Đorđević, Branislav and Sedmak, Aleksandar and Mastilović, Sreten and Popović, Olivera and Kirin, Snežana",
year = "2022",
abstract = "This paper presents a review of different approaches through history concerning DTB transition phenomenon of ferritic steels and their characterization using FM concept, from the earliest studies based on LEFM to the application of the EPFM concept. The large scattering of the experimental fracture toughness data, characteristic of all ferritic steels in the transition temperature region, has imposed the need of including statistical methods for data processing. Such approach that began in the 1970s can be encountered even nowadays as the base of fracture toughness data interpretation in DTB problems. An overview of studies with statistical interpretation of experimental data in the transition temperature region is also given. Aforementioned provides a foundation for novel approaches in DTB transition problems, which include size effects and scaling of geometrically similar specimens.",
journal = "Procedia Structural Integrity",
title = "History of ductile-to-brittle transition problem of ferritic steels",
pages = "95-88",
volume = "42",
doi = "10.1016/j.prostr.2022.12.010"
}

Đorđević, B., Sedmak, A., Mastilović, S., Popović, O.,& Kirin, S.. (2022). History of ductile-to-brittle transition problem of ferritic steels. in Procedia Structural Integrity, 42, 88-95.
https://doi.org/10.1016/j.prostr.2022.12.010

Đorđević B, Sedmak A, Mastilović S, Popović O, Kirin S. History of ductile-to-brittle transition problem of ferritic steels. in Procedia Structural Integrity. 2022;42:88-95.
doi:10.1016/j.prostr.2022.12.010 .

Đorđević, Branislav, Sedmak, Aleksandar, Mastilović, Sreten, Popović, Olivera, Kirin, Snežana, "History of ductile-to-brittle transition problem of ferritic steels" in Procedia Structural Integrity, 42 (2022):88-95,
https://doi.org/10.1016/j.prostr.2022.12.010 . .

TY  - CONF
AU  - Sedmak, Aleksandar
AU  - Tadić, Srđan
AU  - Kirin, Snežana
AU  - Đukić, Miloš
AU  - Al Kateb, M.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3811
AB  - Stress corrosion crack growth in mild steel was investigated by using the finite element simulation method. A model simulating crack growth considered an edge crack located on the metal surface, under tensile remote stress acting on a sample. Numerical analysis was performed using the Code _Aster software to simulate crack growth. Three related variables were evaluated. K, dK/da and maximum stress. Values of these variables were recorded every 2 mm of the crack growth. Results showed an increase in the values of K and maximum stress, while there was a decrease in the values of dK/da, as the crack length increased. There was a good agreement between the results obtained analytically in the literature and numerically obtained here by using finite elements. The results obtained here are consistent with what has been obtained in most of the studies that have been conducted in this regard.
PB  - Springer Science and Business Media Deutschland GmbH
C3  - Lecture Notes in Networks and Systems
T1  - Stress Corrosion Crack Growth Simulation by the Finite Element Method
EP  - 274
SP  - 257
VL  - 323
DO  - 10.1007/978-3-030-86009-7_14
ER  - 

@conference{
author = "Sedmak, Aleksandar and Tadić, Srđan and Kirin, Snežana and Đukić, Miloš and Al Kateb, M.",
year = "2022",
abstract = "Stress corrosion crack growth in mild steel was investigated by using the finite element simulation method. A model simulating crack growth considered an edge crack located on the metal surface, under tensile remote stress acting on a sample. Numerical analysis was performed using the Code _Aster software to simulate crack growth. Three related variables were evaluated. K, dK/da and maximum stress. Values of these variables were recorded every 2 mm of the crack growth. Results showed an increase in the values of K and maximum stress, while there was a decrease in the values of dK/da, as the crack length increased. There was a good agreement between the results obtained analytically in the literature and numerically obtained here by using finite elements. The results obtained here are consistent with what has been obtained in most of the studies that have been conducted in this regard.",
publisher = "Springer Science and Business Media Deutschland GmbH",
journal = "Lecture Notes in Networks and Systems",
title = "Stress Corrosion Crack Growth Simulation by the Finite Element Method",
pages = "274-257",
volume = "323",
doi = "10.1007/978-3-030-86009-7_14"
}

Sedmak, A., Tadić, S., Kirin, S., Đukić, M.,& Al Kateb, M.. (2022). Stress Corrosion Crack Growth Simulation by the Finite Element Method. in Lecture Notes in Networks and Systems
Springer Science and Business Media Deutschland GmbH., 323, 257-274.
https://doi.org/10.1007/978-3-030-86009-7_14

Sedmak A, Tadić S, Kirin S, Đukić M, Al Kateb M. Stress Corrosion Crack Growth Simulation by the Finite Element Method. in Lecture Notes in Networks and Systems. 2022;323:257-274.
doi:10.1007/978-3-030-86009-7_14 .

Sedmak, Aleksandar, Tadić, Srđan, Kirin, Snežana, Đukić, Miloš, Al Kateb, M., "Stress Corrosion Crack Growth Simulation by the Finite Element Method" in Lecture Notes in Networks and Systems, 323 (2022):257-274,
https://doi.org/10.1007/978-3-030-86009-7_14 . .

TY  - CONF
AU  - Vučetić, Filip
AU  - Čolić, Katarina
AU  - Grbović, Aleksandar
AU  - Sedmak, Aleksandar
AU  - Sedmak, Simon
AU  - Kirin, Snežana
AU  - Berto, Filippo
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3635
AB  - This study is aimed to explain the behaviour of different orthopedic plate designs, under uniaxial bending, with cracks initiated in the stress concentration areas. Extended finite element method (XFEM) in ANSYS software was used for simulating the fatigue crack growth in 5 orthopedic plates with different geometries. Results for crack length vs, plate geometry indicated plate D as the best option regarding residual life. Crack paths are analysed in all 5 plates to explain such a behaviour, indicating benefits of initial crack growth into length, followed by growth into depth.
PB  - Elsevier B.V.
C3  - Procedia Structural Integrity
T1  - Numerical simulation of fatigue crack paths in orthopedic plates
EP  - 814
IS  - C
SP  - 808
VL  - 39
DO  - 10.1016/j.prostr.2022.03.154
ER  - 

@conference{
author = "Vučetić, Filip and Čolić, Katarina and Grbović, Aleksandar and Sedmak, Aleksandar and Sedmak, Simon and Kirin, Snežana and Berto, Filippo",
year = "2021",
abstract = "This study is aimed to explain the behaviour of different orthopedic plate designs, under uniaxial bending, with cracks initiated in the stress concentration areas. Extended finite element method (XFEM) in ANSYS software was used for simulating the fatigue crack growth in 5 orthopedic plates with different geometries. Results for crack length vs, plate geometry indicated plate D as the best option regarding residual life. Crack paths are analysed in all 5 plates to explain such a behaviour, indicating benefits of initial crack growth into length, followed by growth into depth.",
publisher = "Elsevier B.V.",
journal = "Procedia Structural Integrity",
title = "Numerical simulation of fatigue crack paths in orthopedic plates",
pages = "814-808",
number = "C",
volume = "39",
doi = "10.1016/j.prostr.2022.03.154"
}

Vučetić, F., Čolić, K., Grbović, A., Sedmak, A., Sedmak, S., Kirin, S.,& Berto, F.. (2021). Numerical simulation of fatigue crack paths in orthopedic plates. in Procedia Structural Integrity
Elsevier B.V.., 39(C), 808-814.
https://doi.org/10.1016/j.prostr.2022.03.154

Vučetić F, Čolić K, Grbović A, Sedmak A, Sedmak S, Kirin S, Berto F. Numerical simulation of fatigue crack paths in orthopedic plates. in Procedia Structural Integrity. 2021;39(C):808-814.
doi:10.1016/j.prostr.2022.03.154 .

Vučetić, Filip, Čolić, Katarina, Grbović, Aleksandar, Sedmak, Aleksandar, Sedmak, Simon, Kirin, Snežana, Berto, Filippo, "Numerical simulation of fatigue crack paths in orthopedic plates" in Procedia Structural Integrity, 39, no. C (2021):808-814,
https://doi.org/10.1016/j.prostr.2022.03.154 . .

TY  - JOUR
AU  - Vasojević, Nena
AU  - Vučetić, Ivana
AU  - Kirin, Snežana
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3472
AB  - Kvalitet nastavnog procesa u velikoj meri zavisi od nastavnika i njihovih kvalifikacija - uloga nastavnika je veoma značajna za uspešnu implementaciju novih nastavnih metoda. Ovaj rad je deo kvantitativne studije ispitivanja iskustva nastavnika osnovnih škola u Srbiji o radu u modelu onlajn nastave realizovanom tokom pandemije COVID-19, u poređenju sa tradicionalnim modelom nastave. Cilj rada je da se na osnovu iskaza i stavova nastavnika sagleda i definiše profil nastavnika u odnosu na izbor nastavnog modela koji im više odgovara za rad: profil nastavnika koji preferiraju isključivo tradicionalni model nastave i profil nastavnika koji preferiraju onlajn model nastave ili ne prave razliku u radu između ova dva nastavna modela. Pretpostavka je bila da će nastavnici koji imaju manje godina radnog staža, više stručnog usavršavanja i viši stepen obrazovanja preferirati onlajn model nastave. Za potrebe istraživanja konstruisan je onlajn upitnik iz dva dela. Prvi deo upitnika odnosio se na socio-demografske podatke, a drugi na karakteristike nastavnog procesa u zavisnosti od primenjenog modela. Za procenu uticprethodnih obuka na izbor preferiranog modela nastave korišćen je t-test nezavisnih uzoraka. Istraživanje je sprovedeno tokom januara i februara 2021. godine. Uzorak istraživanja činilo je 609 predmetnih nastavnika. Rezultati istraživanja pokazuju da izbor tradicionalnog ili onlajn nastavnog modela zavisi od toga koliko se nastavnik oseća kompetentnim za izvođenje onlajn nastave i od dužine trajanja prethodne obuke u okviru redovnog stručnog usavršavanja iz oblasti IKT-a. Rezultati istraživanja samo su delimično potvrdili početnu pretpostavku.
AB  - The quality of the teaching process highly depends on teachers and their qualifications, and the teacher's role plays a very important part in the implementation of the new teaching methods. The results presented in this paper are part of the quantitative study which investigated the primary teachers' perception of the online teaching model that has been realized in Serbia during the COVID-19 pandemic, in comparison to the traditional teaching model. The paper aims to define and present the teachers' profiles, based on their preference for a certain teaching model: the profile of the teachers who prefer working in the traditional teaching model, and the profile of the teachers who prefer working in the online teaching model, or do not make any difference between the two, based on the professional data and their statements and attitudes regarding the comparison of traditional and online teaching models. It was assumed that the teachers with less work experience, more professional training and higher education level would generally prefer the online teaching model. For the research purposes, the specialized two-part questionnaire was designed. The first part included questions concerning the socio-demographic background, while the second part investigated the teachers' attitudes towards the characteristics of the teaching process in both traditional and online teaching models. The independent-sample t-test was used to estimate the influence of previous training on the choice of the preferred teaching model. The research was conducted during January and February 2021. The research sample included 609 examinees. The research results showed that the choice of the preferred teaching model depends on the self-assessment of the teachers' competencies required for the online teaching model, as well as on the duration of the training in the field of Information and Communication Technologies, as a part of the regular professional improvement training. The initial assumption was only partially confirmed by the research results.
PB  - Univerzitet u Novom Sadu - Pedagoški fakultet, Sombor
T2  - Norma
T1  - Profili nastavnika osnovnih škola u Srbiji prema opredeljenju za nastavni model tokom pandemije COVID-19
T1  - The Serbian primary school teachers' profiles regarding the preference for a teaching model during the COVID-19 pandemics
EP  - 38
IS  - 1
SP  - 27
VL  - 26
DO  - 10.5937/norma2101027V
ER  - 

@article{
author = "Vasojević, Nena and Vučetić, Ivana and Kirin, Snežana",
year = "2021",
abstract = "Kvalitet nastavnog procesa u velikoj meri zavisi od nastavnika i njihovih kvalifikacija - uloga nastavnika je veoma značajna za uspešnu implementaciju novih nastavnih metoda. Ovaj rad je deo kvantitativne studije ispitivanja iskustva nastavnika osnovnih škola u Srbiji o radu u modelu onlajn nastave realizovanom tokom pandemije COVID-19, u poređenju sa tradicionalnim modelom nastave. Cilj rada je da se na osnovu iskaza i stavova nastavnika sagleda i definiše profil nastavnika u odnosu na izbor nastavnog modela koji im više odgovara za rad: profil nastavnika koji preferiraju isključivo tradicionalni model nastave i profil nastavnika koji preferiraju onlajn model nastave ili ne prave razliku u radu između ova dva nastavna modela. Pretpostavka je bila da će nastavnici koji imaju manje godina radnog staža, više stručnog usavršavanja i viši stepen obrazovanja preferirati onlajn model nastave. Za potrebe istraživanja konstruisan je onlajn upitnik iz dva dela. Prvi deo upitnika odnosio se na socio-demografske podatke, a drugi na karakteristike nastavnog procesa u zavisnosti od primenjenog modela. Za procenu uticprethodnih obuka na izbor preferiranog modela nastave korišćen je t-test nezavisnih uzoraka. Istraživanje je sprovedeno tokom januara i februara 2021. godine. Uzorak istraživanja činilo je 609 predmetnih nastavnika. Rezultati istraživanja pokazuju da izbor tradicionalnog ili onlajn nastavnog modela zavisi od toga koliko se nastavnik oseća kompetentnim za izvođenje onlajn nastave i od dužine trajanja prethodne obuke u okviru redovnog stručnog usavršavanja iz oblasti IKT-a. Rezultati istraživanja samo su delimično potvrdili početnu pretpostavku., The quality of the teaching process highly depends on teachers and their qualifications, and the teacher's role plays a very important part in the implementation of the new teaching methods. The results presented in this paper are part of the quantitative study which investigated the primary teachers' perception of the online teaching model that has been realized in Serbia during the COVID-19 pandemic, in comparison to the traditional teaching model. The paper aims to define and present the teachers' profiles, based on their preference for a certain teaching model: the profile of the teachers who prefer working in the traditional teaching model, and the profile of the teachers who prefer working in the online teaching model, or do not make any difference between the two, based on the professional data and their statements and attitudes regarding the comparison of traditional and online teaching models. It was assumed that the teachers with less work experience, more professional training and higher education level would generally prefer the online teaching model. For the research purposes, the specialized two-part questionnaire was designed. The first part included questions concerning the socio-demographic background, while the second part investigated the teachers' attitudes towards the characteristics of the teaching process in both traditional and online teaching models. The independent-sample t-test was used to estimate the influence of previous training on the choice of the preferred teaching model. The research was conducted during January and February 2021. The research sample included 609 examinees. The research results showed that the choice of the preferred teaching model depends on the self-assessment of the teachers' competencies required for the online teaching model, as well as on the duration of the training in the field of Information and Communication Technologies, as a part of the regular professional improvement training. The initial assumption was only partially confirmed by the research results.",
publisher = "Univerzitet u Novom Sadu - Pedagoški fakultet, Sombor",
journal = "Norma",
title = "Profili nastavnika osnovnih škola u Srbiji prema opredeljenju za nastavni model tokom pandemije COVID-19, The Serbian primary school teachers' profiles regarding the preference for a teaching model during the COVID-19 pandemics",
pages = "38-27",
number = "1",
volume = "26",
doi = "10.5937/norma2101027V"
}

Vasojević, N., Vučetić, I.,& Kirin, S.. (2021). Profili nastavnika osnovnih škola u Srbiji prema opredeljenju za nastavni model tokom pandemije COVID-19. in Norma
Univerzitet u Novom Sadu - Pedagoški fakultet, Sombor., 26(1), 27-38.
https://doi.org/10.5937/norma2101027V

Vasojević N, Vučetić I, Kirin S. Profili nastavnika osnovnih škola u Srbiji prema opredeljenju za nastavni model tokom pandemije COVID-19. in Norma. 2021;26(1):27-38.
doi:10.5937/norma2101027V .

Vasojević, Nena, Vučetić, Ivana, Kirin, Snežana, "Profili nastavnika osnovnih škola u Srbiji prema opredeljenju za nastavni model tokom pandemije COVID-19" in Norma, 26, no. 1 (2021):27-38,
https://doi.org/10.5937/norma2101027V . .

TY  - CONF
AU  - Kirin, Snežana
AU  - Vučetić, Ivana
AU  - Vasojević, Nena
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7432
AB  - Ukoliko se termin inovacija posmatra u kontekstu ekonomije, odnosi se
prvenstveno na primenu novih ideja za unapređenje proizvoda, usluga i procesa,
korisnih za kompaniju i klijente. Upravljanje inovacijama je od vitalnog značaja za
uspešno poslovanje kompanije, kako omogućava povezivanje sa različitim tržištima i
obezbeđuje konkurentnost, što je posebno značajno za one u zemljama u razvoju. U
ovom radu su prikazani rezultati istraživanja u kojoj meri se u kompanijama u Srbiji
primenjuje strategija upravljanja inovacijama. Istraživanjem je obuhvaćeno 106
kompanija. Cilj istraživanja bio je utvrditi faktore koji utiču na zastupljenost inovacionih
kapaciteta u kompanijama. Za potrebe istraživanja konstruisan je upitnik, kojim je,
uzimajući u obzir 21 dimenziju upravljanja inovacijama, trebalo ispitati u kojoj meri
kompanije u Srbiji primenjuju inovacione strategije. Podaci su obrađeni primenom
statističkog programa IBM SPSS 19. Metoda analize varijanse (ANOVA) pokazuje da
dimenzije upravljanja inovacijama zavise od veličine kompanije u odnosu na broj
zaposlenih i novčani obrt kompanije.
PB  - Univerzitet u Beogradu, Fakultet organizacionih nauka
C3  - Zbornik radova XIII Skupa privrednika i naučnika SPIN ’21: Industrija 4.0 -mogućnosti, izazovi i rešenja za digitalnu transformaciju privrede
T1  - Upravljanje inovacijama u kompanijama u Srbiji
EP  - 135
SP  - 128
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7432
ER  - 

@conference{
author = "Kirin, Snežana and Vučetić, Ivana and Vasojević, Nena",
year = "2021",
abstract = "Ukoliko se termin inovacija posmatra u kontekstu ekonomije, odnosi se
prvenstveno na primenu novih ideja za unapređenje proizvoda, usluga i procesa,
korisnih za kompaniju i klijente. Upravljanje inovacijama je od vitalnog značaja za
uspešno poslovanje kompanije, kako omogućava povezivanje sa različitim tržištima i
obezbeđuje konkurentnost, što je posebno značajno za one u zemljama u razvoju. U
ovom radu su prikazani rezultati istraživanja u kojoj meri se u kompanijama u Srbiji
primenjuje strategija upravljanja inovacijama. Istraživanjem je obuhvaćeno 106
kompanija. Cilj istraživanja bio je utvrditi faktore koji utiču na zastupljenost inovacionih
kapaciteta u kompanijama. Za potrebe istraživanja konstruisan je upitnik, kojim je,
uzimajući u obzir 21 dimenziju upravljanja inovacijama, trebalo ispitati u kojoj meri
kompanije u Srbiji primenjuju inovacione strategije. Podaci su obrađeni primenom
statističkog programa IBM SPSS 19. Metoda analize varijanse (ANOVA) pokazuje da
dimenzije upravljanja inovacijama zavise od veličine kompanije u odnosu na broj
zaposlenih i novčani obrt kompanije.",
publisher = "Univerzitet u Beogradu, Fakultet organizacionih nauka",
journal = "Zbornik radova XIII Skupa privrednika i naučnika SPIN ’21: Industrija 4.0 -mogućnosti, izazovi i rešenja za digitalnu transformaciju privrede",
title = "Upravljanje inovacijama u kompanijama u Srbiji",
pages = "135-128",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7432"
}

Kirin, S., Vučetić, I.,& Vasojević, N.. (2021). Upravljanje inovacijama u kompanijama u Srbiji. in Zbornik radova XIII Skupa privrednika i naučnika SPIN ’21: Industrija 4.0 -mogućnosti, izazovi i rešenja za digitalnu transformaciju privrede
Univerzitet u Beogradu, Fakultet organizacionih nauka., 128-135.
https://hdl.handle.net/21.15107/rcub_machinery_7432

Kirin S, Vučetić I, Vasojević N. Upravljanje inovacijama u kompanijama u Srbiji. in Zbornik radova XIII Skupa privrednika i naučnika SPIN ’21: Industrija 4.0 -mogućnosti, izazovi i rešenja za digitalnu transformaciju privrede. 2021;:128-135.
https://hdl.handle.net/21.15107/rcub_machinery_7432 .

Kirin, Snežana, Vučetić, Ivana, Vasojević, Nena, "Upravljanje inovacijama u kompanijama u Srbiji" in Zbornik radova XIII Skupa privrednika i naučnika SPIN ’21: Industrija 4.0 -mogućnosti, izazovi i rešenja za digitalnu transformaciju privrede (2021):128-135,
https://hdl.handle.net/21.15107/rcub_machinery_7432 .

TY  - CONF
AU  - Vasojević, Nena
AU  - Kirin, Snežana
AU  - Vučetić, Ivana
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7425
PB  - Institut za Pedagoška istraživanja, Beograd
C3  - Zbornik radova: Kvalitativna istraživanja kroz discipline i kontekste: osmišljavanje sličnosti i razlika
T1  - Kako učenici srednjih škola u Srbiji doživljavaju učenje na daljinu
EP  - 57
SP  - 54
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7425
ER  - 

@conference{
author = "Vasojević, Nena and Kirin, Snežana and Vučetić, Ivana",
year = "2021",
publisher = "Institut za Pedagoška istraživanja, Beograd",
journal = "Zbornik radova: Kvalitativna istraživanja kroz discipline i kontekste: osmišljavanje sličnosti i razlika",
title = "Kako učenici srednjih škola u Srbiji doživljavaju učenje na daljinu",
pages = "57-54",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7425"
}

Vasojević, N., Kirin, S.,& Vučetić, I.. (2021). Kako učenici srednjih škola u Srbiji doživljavaju učenje na daljinu. in Zbornik radova: Kvalitativna istraživanja kroz discipline i kontekste: osmišljavanje sličnosti i razlika
Institut za Pedagoška istraživanja, Beograd., 54-57.
https://hdl.handle.net/21.15107/rcub_machinery_7425

Vasojević N, Kirin S, Vučetić I. Kako učenici srednjih škola u Srbiji doživljavaju učenje na daljinu. in Zbornik radova: Kvalitativna istraživanja kroz discipline i kontekste: osmišljavanje sličnosti i razlika. 2021;:54-57.
https://hdl.handle.net/21.15107/rcub_machinery_7425 .

Vasojević, Nena, Kirin, Snežana, Vučetić, Ivana, "Kako učenici srednjih škola u Srbiji doživljavaju učenje na daljinu" in Zbornik radova: Kvalitativna istraživanja kroz discipline i kontekste: osmišljavanje sličnosti i razlika (2021):54-57,
https://hdl.handle.net/21.15107/rcub_machinery_7425 .

TY  - CONF
AU  - Vučetić, Ivana
AU  - Kirin, Snežana
AU  - Vasojević, Nena
AU  - Sedmak, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7181
AB  - Poslednjih godina informaciono-komunikacione tehnologije (IKT) dobijaju sve značajnije
mesto u obrazovnom sistemu. Tehnološki razvoj zahteva unapređenje obrazovnog sistema i
osposobljavanje učenika za novu eru, ali ujedno predstavlja izazov, posebno za nastavnike. Usled
pandemije korona virusa obrazovni sistem Srbije se neočekivano i neplanirano, poput drugih
obrazovnih sistema širom sveta, našao pred obavezom da u najkraćem mogućem roku celokupni
obrazovno-vaspitni program realizuje putem udaljene online nastave. Nakon nepune godine dana
implementacije novog modela učenja (tokom januara i februara 2021. godine) sprovedeno je
empirijsko istraživanje sa ciljem da se utvrdi stepen i brzina prihvatanja promene. Ispitivan je nivo
obučenosti nastavnog kadra iz domena IKT, kao i odnos nastavnika prema primeni tradicionalnog i
online modela nastave. Sa tim ciljem je sprovedeno istraživanje putem ankete među nastavnicima
osnovnih škola u Srbiji. Uzorak ispitanika je činilo 609 nastavnika predmetne nastave. Dobijeni
rezultati su pokazali da, iako je oko 50% nastavnika svoje veštine iz domena IKT ocenilo kao
visoke, ipak većina njih za realizaciju vaspitno-obrazovnih ciljeva preferira tradicionalni model
nastave.
PB  - University PIM, Banja Luka, Republic of Srpska, B&H
C3  - Proceedings of X International conference of social and technological development
T1  - (Samo)procena nastavnika osnovnih škola u Srbiji o nastavnim modelima u praksi
EP  - 777
SP  - 770
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7181
ER  - 

@conference{
author = "Vučetić, Ivana and Kirin, Snežana and Vasojević, Nena and Sedmak, Aleksandar",
year = "2021",
abstract = "Poslednjih godina informaciono-komunikacione tehnologije (IKT) dobijaju sve značajnije
mesto u obrazovnom sistemu. Tehnološki razvoj zahteva unapređenje obrazovnog sistema i
osposobljavanje učenika za novu eru, ali ujedno predstavlja izazov, posebno za nastavnike. Usled
pandemije korona virusa obrazovni sistem Srbije se neočekivano i neplanirano, poput drugih
obrazovnih sistema širom sveta, našao pred obavezom da u najkraćem mogućem roku celokupni
obrazovno-vaspitni program realizuje putem udaljene online nastave. Nakon nepune godine dana
implementacije novog modela učenja (tokom januara i februara 2021. godine) sprovedeno je
empirijsko istraživanje sa ciljem da se utvrdi stepen i brzina prihvatanja promene. Ispitivan je nivo
obučenosti nastavnog kadra iz domena IKT, kao i odnos nastavnika prema primeni tradicionalnog i
online modela nastave. Sa tim ciljem je sprovedeno istraživanje putem ankete među nastavnicima
osnovnih škola u Srbiji. Uzorak ispitanika je činilo 609 nastavnika predmetne nastave. Dobijeni
rezultati su pokazali da, iako je oko 50% nastavnika svoje veštine iz domena IKT ocenilo kao
visoke, ipak većina njih za realizaciju vaspitno-obrazovnih ciljeva preferira tradicionalni model
nastave.",
publisher = "University PIM, Banja Luka, Republic of Srpska, B&H",
journal = "Proceedings of X International conference of social and technological development",
title = "(Samo)procena nastavnika osnovnih škola u Srbiji o nastavnim modelima u praksi",
pages = "777-770",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7181"
}

Vučetić, I., Kirin, S., Vasojević, N.,& Sedmak, A.. (2021). (Samo)procena nastavnika osnovnih škola u Srbiji o nastavnim modelima u praksi. in Proceedings of X International conference of social and technological development
University PIM, Banja Luka, Republic of Srpska, B&H., 770-777.
https://hdl.handle.net/21.15107/rcub_machinery_7181

Vučetić I, Kirin S, Vasojević N, Sedmak A. (Samo)procena nastavnika osnovnih škola u Srbiji o nastavnim modelima u praksi. in Proceedings of X International conference of social and technological development. 2021;:770-777.
https://hdl.handle.net/21.15107/rcub_machinery_7181 .

Vučetić, Ivana, Kirin, Snežana, Vasojević, Nena, Sedmak, Aleksandar, "(Samo)procena nastavnika osnovnih škola u Srbiji o nastavnim modelima u praksi" in Proceedings of X International conference of social and technological development (2021):770-777,
https://hdl.handle.net/21.15107/rcub_machinery_7181 .

TY  - CONF
AU  - Kirin, Snežana
AU  - Vasojević, Nena
AU  - Vučetić, Ivana
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7180
AB  - The education system is facing the permanent challenge to adapt to the constantly changing
states in science, technology, and economy, and it plays an important role in the overall society development and socio-economic progress. In order to establish a high-quality, efficient education system, it is necessary to develop the teaching staff competences in accordance with the innovations in the education field. The quality of the teaching process largely depends on the extent to which modern teaching methods are applied, which are, in the contemporary context, based on the use of the information and communication technologies in the teaching process (ICT). Following the technology advancement and the information channels transformation, the role of the teacher has changed, and in this new context the teacher is assigned with a new role of the “teaching manager”, or the leader of the teaching process. This paper shows comparative analyses of the relations between the teaching stuff ICT training and the organization of the teaching process, when observed in traditional and online teaching settings. The research was conducted in Serbia in January and February of 2021, during the Covid-19 pandemic, and included the sample of teachers who work in primary schools (N=609).
PB  - Association of Economists and Managers of the Balkans
C3  - Proceedings of 5th International Scientific Conference EMAN – Economics & Management: How to Cope with Disrupted Times
T1  - Education management and information and communication technologies
EP  - 229
SP  - 223
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7180
ER  - 

@conference{
author = "Kirin, Snežana and Vasojević, Nena and Vučetić, Ivana",
year = "2021",
abstract = "The education system is facing the permanent challenge to adapt to the constantly changing
states in science, technology, and economy, and it plays an important role in the overall society development and socio-economic progress. In order to establish a high-quality, efficient education system, it is necessary to develop the teaching staff competences in accordance with the innovations in the education field. The quality of the teaching process largely depends on the extent to which modern teaching methods are applied, which are, in the contemporary context, based on the use of the information and communication technologies in the teaching process (ICT). Following the technology advancement and the information channels transformation, the role of the teacher has changed, and in this new context the teacher is assigned with a new role of the “teaching manager”, or the leader of the teaching process. This paper shows comparative analyses of the relations between the teaching stuff ICT training and the organization of the teaching process, when observed in traditional and online teaching settings. The research was conducted in Serbia in January and February of 2021, during the Covid-19 pandemic, and included the sample of teachers who work in primary schools (N=609).",
publisher = "Association of Economists and Managers of the Balkans",
journal = "Proceedings of 5th International Scientific Conference EMAN – Economics & Management: How to Cope with Disrupted Times",
title = "Education management and information and communication technologies",
pages = "229-223",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7180"
}

Kirin, S., Vasojević, N.,& Vučetić, I.. (2021). Education management and information and communication technologies. in Proceedings of 5th International Scientific Conference EMAN – Economics & Management: How to Cope with Disrupted Times
Association of Economists and Managers of the Balkans., 223-229.
https://hdl.handle.net/21.15107/rcub_machinery_7180

Kirin S, Vasojević N, Vučetić I. Education management and information and communication technologies. in Proceedings of 5th International Scientific Conference EMAN – Economics & Management: How to Cope with Disrupted Times. 2021;:223-229.
https://hdl.handle.net/21.15107/rcub_machinery_7180 .

Kirin, Snežana, Vasojević, Nena, Vučetić, Ivana, "Education management and information and communication technologies" in Proceedings of 5th International Scientific Conference EMAN – Economics & Management: How to Cope with Disrupted Times (2021):223-229,
https://hdl.handle.net/21.15107/rcub_machinery_7180 .

TY  - CHAP
AU  - Sedmak, Aleksandar
AU  - Kirin, Snežana
AU  - Martić, Igor
AU  - Jeremić, Lazar
AU  - Vučetić, Ivana
AU  - Golubović, Tamara
AU  - Sedmak, Simon
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3677
AB  - Risk based approach to assess structural integrity and life of pressure vessel has been presented, starring from EU PED 2014/68 and API 581, ending with use of basic fracture mechanics parameters. In the scope of risk matrix, structural integrity has been tackled by use of the Failure Assessment Diagram (FAD), while structural life was assessed by means of Paris law, using fatigue crack growth rate as relevant parameter. Several case studies have been provided to illustrate this comprehensive approach, including penstock and air storage tanks in Reversable Hydro Power Plant, and two spherical storage tanks, one for vinyl chloride monomer (VCM), the other for ammonia. Besides the assessment of integrity and life, including some important issue like over-pressurizing, roles of engineers and managers in this process is defined and explained.
PB  - Springer
T2  - Lecture Notes in Networks and Systems
T1  - Structural integrity and life assessment of pressure vessels - risk based approach
EP  - 293
SP  - 274
VL  - 153
DO  - 10.1007/978-3-030-58362-0_16
ER  - 

@inbook{
author = "Sedmak, Aleksandar and Kirin, Snežana and Martić, Igor and Jeremić, Lazar and Vučetić, Ivana and Golubović, Tamara and Sedmak, Simon",
year = "2021",
abstract = "Risk based approach to assess structural integrity and life of pressure vessel has been presented, starring from EU PED 2014/68 and API 581, ending with use of basic fracture mechanics parameters. In the scope of risk matrix, structural integrity has been tackled by use of the Failure Assessment Diagram (FAD), while structural life was assessed by means of Paris law, using fatigue crack growth rate as relevant parameter. Several case studies have been provided to illustrate this comprehensive approach, including penstock and air storage tanks in Reversable Hydro Power Plant, and two spherical storage tanks, one for vinyl chloride monomer (VCM), the other for ammonia. Besides the assessment of integrity and life, including some important issue like over-pressurizing, roles of engineers and managers in this process is defined and explained.",
publisher = "Springer",
journal = "Lecture Notes in Networks and Systems",
booktitle = "Structural integrity and life assessment of pressure vessels - risk based approach",
pages = "293-274",
volume = "153",
doi = "10.1007/978-3-030-58362-0_16"
}

Sedmak, A., Kirin, S., Martić, I., Jeremić, L., Vučetić, I., Golubović, T.,& Sedmak, S.. (2021). Structural integrity and life assessment of pressure vessels - risk based approach. in Lecture Notes in Networks and Systems
Springer., 153, 274-293.
https://doi.org/10.1007/978-3-030-58362-0_16

Sedmak A, Kirin S, Martić I, Jeremić L, Vučetić I, Golubović T, Sedmak S. Structural integrity and life assessment of pressure vessels - risk based approach. in Lecture Notes in Networks and Systems. 2021;153:274-293.
doi:10.1007/978-3-030-58362-0_16 .

Sedmak, Aleksandar, Kirin, Snežana, Martić, Igor, Jeremić, Lazar, Vučetić, Ivana, Golubović, Tamara, Sedmak, Simon, "Structural integrity and life assessment of pressure vessels - risk based approach" in Lecture Notes in Networks and Systems, 153 (2021):274-293,
https://doi.org/10.1007/978-3-030-58362-0_16 . .

TY  - CONF
AU  - Zaidi, Radzeya
AU  - Kozak, Dražan
AU  - Sedmak, Aleksandar
AU  - Kirin, Snežana
AU  - Franulović, M.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3656
AB  - Risk assessment procedure based on structural integrity evaluation has been applied to oil drilling rig pipe. The new concept based on application of structural integrity evaluation to assess risk level according to probability and consequence of failure was used. Analytical expressions for surface cracks are used to calculate stress intensity factors for different crack geometries. Oil drilling rig welded pipe integrity has been evaluated analytically by simple application of the Failure Assessment Diagramme (FAD), i.e. by using the ratio of linear elastic fracture mechanics parameter, KI, and its critical value, KIc, in relation with the ratio of applied stress and its critical value, to define the point in FAD. Probability of failure is then taken according to the position of the point in the FAD, corresponding to oil drilling rig welded pipe data. The same logic is employed in the case of cyclic loading, i.e. fatigue crack growth. In that case, structural life is estimated by using Paris law to calculate crack length vs. number of cycles, to be used in risk assessment procedure and by managers to make decision about further use of damaged pipes, based on data provided by engineers.
PB  - Elsevier B.V.
C3  - Procedia Structural Integrity
T1  - Risk assessment based on analytical evaluation of structural integrity and life of drilling rig pipe
EP  - 1186
IS  - C
SP  - 1181
VL  - 33
DO  - 10.1016/j.prostr.2021.10.132
ER  - 

@conference{
author = "Zaidi, Radzeya and Kozak, Dražan and Sedmak, Aleksandar and Kirin, Snežana and Franulović, M.",
year = "2021",
abstract = "Risk assessment procedure based on structural integrity evaluation has been applied to oil drilling rig pipe. The new concept based on application of structural integrity evaluation to assess risk level according to probability and consequence of failure was used. Analytical expressions for surface cracks are used to calculate stress intensity factors for different crack geometries. Oil drilling rig welded pipe integrity has been evaluated analytically by simple application of the Failure Assessment Diagramme (FAD), i.e. by using the ratio of linear elastic fracture mechanics parameter, KI, and its critical value, KIc, in relation with the ratio of applied stress and its critical value, to define the point in FAD. Probability of failure is then taken according to the position of the point in the FAD, corresponding to oil drilling rig welded pipe data. The same logic is employed in the case of cyclic loading, i.e. fatigue crack growth. In that case, structural life is estimated by using Paris law to calculate crack length vs. number of cycles, to be used in risk assessment procedure and by managers to make decision about further use of damaged pipes, based on data provided by engineers.",
publisher = "Elsevier B.V.",
journal = "Procedia Structural Integrity",
title = "Risk assessment based on analytical evaluation of structural integrity and life of drilling rig pipe",
pages = "1186-1181",
number = "C",
volume = "33",
doi = "10.1016/j.prostr.2021.10.132"
}

Zaidi, R., Kozak, D., Sedmak, A., Kirin, S.,& Franulović, M.. (2021). Risk assessment based on analytical evaluation of structural integrity and life of drilling rig pipe. in Procedia Structural Integrity
Elsevier B.V.., 33(C), 1181-1186.
https://doi.org/10.1016/j.prostr.2021.10.132

Zaidi R, Kozak D, Sedmak A, Kirin S, Franulović M. Risk assessment based on analytical evaluation of structural integrity and life of drilling rig pipe. in Procedia Structural Integrity. 2021;33(C):1181-1186.
doi:10.1016/j.prostr.2021.10.132 .

Zaidi, Radzeya, Kozak, Dražan, Sedmak, Aleksandar, Kirin, Snežana, Franulović, M., "Risk assessment based on analytical evaluation of structural integrity and life of drilling rig pipe" in Procedia Structural Integrity, 33, no. C (2021):1181-1186,
https://doi.org/10.1016/j.prostr.2021.10.132 . .

TY  - JOUR
AU  - Kirin, Snežana
AU  - Sedmak, Aleksandar
AU  - Li, Wei
AU  - Brzaković, Miodrag
AU  - Miljanović, Igor
AU  - Petrović, Ana
AU  - Sedmak, Simon
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3509
AB  - Risk management aims to provide a controlled work environment to ensure the safe operation of the high-risk systems. It is a dynamic process which work in a continual state of change. The issue of human factor risk and rules and regulations in open pit mine is a main focus of this paper in order to develop predictive models of behavior of workers in relation to compliance with the procedures and rules. Presented survey was conducted in open pit coal mine, as high-risk system, involving 476 mineworkers. The survey was in the form of a questionnaire, consisting of approximately 45 questions. It aimed to find out the opinions of the mining workforce about risk attitude generally as well as about safety rules and regulations. The first goal was to determine factor with the biggest influence on risk of human factor. The second goal was creation model for prediction behavior of mining workers. The survey also aimed to examine: (a) major human risk factors at a specific open-pit mine site (b) mine workers' opinions about policies and procedures; (c) the manner in which mine safety rules and regulations are perceived and understood; (d) the frequency of deviation from rules and regulations; (e) attitudes related to risk taking and their interaction with rules and regulations; and (f) anticipate the behavior of mining workers with respect to compliance with policies and procedures. In addition, a case study is presented, related to failure of mining equipment, the SchRs 630 bucket wheel excavator, which had occurred due to excessive loads caused by a human factor, such as inadequate operation of the equipment. The goal here was to further relate the effects of the human factor to the structural integrity, by providing a reliable numerical model which could be used to determine the critical locations where failures could occur, and by combining this approach with the previously described risk analysis methodology, structure safety can be improved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Human factor risk management procedures applied in the case of open pit mine
VL  - 126
DO  - 10.1016/j.engfailanal.2021.105456
ER  - 

@article{
author = "Kirin, Snežana and Sedmak, Aleksandar and Li, Wei and Brzaković, Miodrag and Miljanović, Igor and Petrović, Ana and Sedmak, Simon",
year = "2021",
abstract = "Risk management aims to provide a controlled work environment to ensure the safe operation of the high-risk systems. It is a dynamic process which work in a continual state of change. The issue of human factor risk and rules and regulations in open pit mine is a main focus of this paper in order to develop predictive models of behavior of workers in relation to compliance with the procedures and rules. Presented survey was conducted in open pit coal mine, as high-risk system, involving 476 mineworkers. The survey was in the form of a questionnaire, consisting of approximately 45 questions. It aimed to find out the opinions of the mining workforce about risk attitude generally as well as about safety rules and regulations. The first goal was to determine factor with the biggest influence on risk of human factor. The second goal was creation model for prediction behavior of mining workers. The survey also aimed to examine: (a) major human risk factors at a specific open-pit mine site (b) mine workers' opinions about policies and procedures; (c) the manner in which mine safety rules and regulations are perceived and understood; (d) the frequency of deviation from rules and regulations; (e) attitudes related to risk taking and their interaction with rules and regulations; and (f) anticipate the behavior of mining workers with respect to compliance with policies and procedures. In addition, a case study is presented, related to failure of mining equipment, the SchRs 630 bucket wheel excavator, which had occurred due to excessive loads caused by a human factor, such as inadequate operation of the equipment. The goal here was to further relate the effects of the human factor to the structural integrity, by providing a reliable numerical model which could be used to determine the critical locations where failures could occur, and by combining this approach with the previously described risk analysis methodology, structure safety can be improved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Human factor risk management procedures applied in the case of open pit mine",
volume = "126",
doi = "10.1016/j.engfailanal.2021.105456"
}

Kirin, S., Sedmak, A., Li, W., Brzaković, M., Miljanović, I., Petrović, A.,& Sedmak, S.. (2021). Human factor risk management procedures applied in the case of open pit mine. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 126.
https://doi.org/10.1016/j.engfailanal.2021.105456

Kirin S, Sedmak A, Li W, Brzaković M, Miljanović I, Petrović A, Sedmak S. Human factor risk management procedures applied in the case of open pit mine. in Engineering Failure Analysis. 2021;126.
doi:10.1016/j.engfailanal.2021.105456 .

Kirin, Snežana, Sedmak, Aleksandar, Li, Wei, Brzaković, Miodrag, Miljanović, Igor, Petrović, Ana, Sedmak, Simon, "Human factor risk management procedures applied in the case of open pit mine" in Engineering Failure Analysis, 126 (2021),
https://doi.org/10.1016/j.engfailanal.2021.105456 . .

TY  - JOUR
AU  - Stevović, Ivan
AU  - Kirin, Snežana
AU  - Božić, Ivan
PY  - 2021
UR  - https://doi.org/10.7251/COMEN2102226S
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6476
AB  - Two artificial intelligence models for the integration of renewable energy 
sources are developed within this research to contribute to the European Green Plan realization. The review of renewable energy natural potential, on one hand, and installed capacity, on the other hand, in the Western Balkans and twenty-eight European countries is done within this research, as well as emissions. The analyses show that the European countries, sometimes even with lower natural potential in renewables, have installed much more renewable capacities than the Balkans countries with much higher natural potential. According to this, the first artificial intelligence model is developed based on multi-criteria linear regression analysis. This model relies on the correlation between the relevant regressors, i.e. relevant input variables for twenty-eight European countries and the same regressors for a particular Balkans country. Its goal is to find the maximum possible integrative renewable capacity in a Balkans’s country within the real socio-economic environment. The second artificial intelligence model is developed based on multi-criteria evolution genetic algorithms. Its goal is to find the maximum possible integrative renewable capacity within a real electric power system. Nature-inspired optimization is applied. From the framework of a given large number of generations, technical combinations of the degree of renewable energy sources integration, the best populations, i.e. combinations are selected. As nature selects from many generations and allows the best to survive and punishes the „weakˮ, in our case, „weak” combinations are those failing to meet the given conditions and limitations of the real electric power system. A new methodology is offered. Theoretical general formulas are given for both models. Developed models are tested on a numerical experiment of solar energy integration in the Serbia case study. Analyses of sensitivity prove that both models are applicable for all renewable energy sources and countries or regions.
PB  - Academy of Sciences and Arts of the Republic of Srpska
T2  - Contemporary Materials
T1  - Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan
EP  - 252
SP  - 226
VL  - XII-2
DO  - 10.7251/COMEN2102226S
ER  - 

@article{
author = "Stevović, Ivan and Kirin, Snežana and Božić, Ivan",
year = "2021",
abstract = "Two artificial intelligence models for the integration of renewable energy 
sources are developed within this research to contribute to the European Green Plan realization. The review of renewable energy natural potential, on one hand, and installed capacity, on the other hand, in the Western Balkans and twenty-eight European countries is done within this research, as well as emissions. The analyses show that the European countries, sometimes even with lower natural potential in renewables, have installed much more renewable capacities than the Balkans countries with much higher natural potential. According to this, the first artificial intelligence model is developed based on multi-criteria linear regression analysis. This model relies on the correlation between the relevant regressors, i.e. relevant input variables for twenty-eight European countries and the same regressors for a particular Balkans country. Its goal is to find the maximum possible integrative renewable capacity in a Balkans’s country within the real socio-economic environment. The second artificial intelligence model is developed based on multi-criteria evolution genetic algorithms. Its goal is to find the maximum possible integrative renewable capacity within a real electric power system. Nature-inspired optimization is applied. From the framework of a given large number of generations, technical combinations of the degree of renewable energy sources integration, the best populations, i.e. combinations are selected. As nature selects from many generations and allows the best to survive and punishes the „weakˮ, in our case, „weak” combinations are those failing to meet the given conditions and limitations of the real electric power system. A new methodology is offered. Theoretical general formulas are given for both models. Developed models are tested on a numerical experiment of solar energy integration in the Serbia case study. Analyses of sensitivity prove that both models are applicable for all renewable energy sources and countries or regions.",
publisher = "Academy of Sciences and Arts of the Republic of Srpska",
journal = "Contemporary Materials",
title = "Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan",
pages = "252-226",
volume = "XII-2",
doi = "10.7251/COMEN2102226S"
}

Stevović, I., Kirin, S.,& Božić, I.. (2021). Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan. in Contemporary Materials
Academy of Sciences and Arts of the Republic of Srpska., XII-2, 226-252.
https://doi.org/10.7251/COMEN2102226S

Stevović I, Kirin S, Božić I. Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan. in Contemporary Materials. 2021;XII-2:226-252.
doi:10.7251/COMEN2102226S .

Stevović, Ivan, Kirin, Snežana, Božić, Ivan, "Artificial Intelligence and Nature-Inspired Optimization on Integrative Capacity ff Renewable Energy in the Western Balkan" in Contemporary Materials, XII-2 (2021):226-252,
https://doi.org/10.7251/COMEN2102226S . .

TY  - JOUR
AU  - Misita, Mirjana
AU  - Spasojević Brkić, Vesna
AU  - Brkić, Aleksandar
AU  - Kirin, Snežana
AU  - Rakonjac, Ivan
AU  - Damjanović, Milanko
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3636
AB  - In this paper, problem of mining machinery efficiency is considered through impact of different types of downtimes. New methodology is suggested based on comparison impact of mechanical and technological mining machinery time in fault (M-t, T-t) and mechanical and technological mining machinery downtime frequencies (M-f, T-f) on machine work done (W). Benchmarking analysis is conducted by pairing variables M-t-W, T-t-W, M-f-W and T-f-W, and determining relationships between observed variables. By comparing the increment of the cumulative downtime curve with the cumulative curve of the machine's operating volume, it can be assessed whether the observed downtime develops a concave or convex character of the operating volume cumulative curve, in respect to significant losses. Results indicate that the relationship between cumulative downtime curve and cumulative work done curve can successfully serve as a parameter for evaluating the impact of specific downtime on the efficiency of the machine. A multi-criteria analysis, namely, an analysis of the criteria - frequency and time spent in downtime for each of the observed causes of downtime, clearly determines the critical pattern of downtime on the efficiency of the observed machine.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Impact of downtime pattern on mining machinery efficiency
EP  - 35
IS  - 1
SP  - 29
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3636
ER  - 

@article{
author = "Misita, Mirjana and Spasojević Brkić, Vesna and Brkić, Aleksandar and Kirin, Snežana and Rakonjac, Ivan and Damjanović, Milanko",
year = "2021",
abstract = "In this paper, problem of mining machinery efficiency is considered through impact of different types of downtimes. New methodology is suggested based on comparison impact of mechanical and technological mining machinery time in fault (M-t, T-t) and mechanical and technological mining machinery downtime frequencies (M-f, T-f) on machine work done (W). Benchmarking analysis is conducted by pairing variables M-t-W, T-t-W, M-f-W and T-f-W, and determining relationships between observed variables. By comparing the increment of the cumulative downtime curve with the cumulative curve of the machine's operating volume, it can be assessed whether the observed downtime develops a concave or convex character of the operating volume cumulative curve, in respect to significant losses. Results indicate that the relationship between cumulative downtime curve and cumulative work done curve can successfully serve as a parameter for evaluating the impact of specific downtime on the efficiency of the machine. A multi-criteria analysis, namely, an analysis of the criteria - frequency and time spent in downtime for each of the observed causes of downtime, clearly determines the critical pattern of downtime on the efficiency of the observed machine.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Impact of downtime pattern on mining machinery efficiency",
pages = "35-29",
number = "1",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3636"
}

Misita, M., Spasojević Brkić, V., Brkić, A., Kirin, S., Rakonjac, I.,& Damjanović, M.. (2021). Impact of downtime pattern on mining machinery efficiency. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 21(1), 29-35.
https://hdl.handle.net/21.15107/rcub_machinery_3636

Misita M, Spasojević Brkić V, Brkić A, Kirin S, Rakonjac I, Damjanović M. Impact of downtime pattern on mining machinery efficiency. in Structural Integrity and Life. 2021;21(1):29-35.
https://hdl.handle.net/21.15107/rcub_machinery_3636 .

Misita, Mirjana, Spasojević Brkić, Vesna, Brkić, Aleksandar, Kirin, Snežana, Rakonjac, Ivan, Damjanović, Milanko, "Impact of downtime pattern on mining machinery efficiency" in Structural Integrity and Life, 21, no. 1 (2021):29-35,
https://hdl.handle.net/21.15107/rcub_machinery_3636 .