TY  - CONF
AU  - Vasojević, Irena
AU  - Vasojević, Nena
AU  - Vučetić, Ivana
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7422
AB  - The global COVID-19 pandemic has affected the educational system
around the world, which has led to an increase in scientific papers dealing with
the implementation of online models in emergency situations. This research
used a combined mixed method to examine the experiences of students, classroom teachers and mathematics teachers, in aim to identify the teaching topics of mathematics which students and teachers considered the easiest when
solving tasks during online teaching, as well as those which were considered
the most difficult. The assumption was that in the teaching process, the biggest problem occurs when solving text tasks with a real-life topic, and that this
problem is directly conditioned by the degree of use of text tasks with a reallife topic by the mathematics teachers. For the purposes of the research, two
(semi)structured questionnaires were constructed. The research was conducted during May 2021 and February–March 2023. The research sample consisted
of students, classroom teachers and mathematics teachers from 13 schools in
the territory of the Republic of Serbia. The research results show that students
found tasks with a theme from life most difficult in the field of geometry, and
the easiest in the field of arithmetic. According to teachers, the reason for this
are the didactic-methodical limitations they encountered while teaching in the
online space.
PB  - University of Belgrade, Teacher Education Faculty
C3  - International Scientific Conference Education during COVID-19 pandemic: experience and lessons learned, book of abstracts
T1  - Teaching mathematics during the pandemic: Students' and teachers' perceptions of the task context
EP  - 297
SP  - 296
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7422
ER  - 

@conference{
author = "Vasojević, Irena and Vasojević, Nena and Vučetić, Ivana",
year = "2023",
abstract = "The global COVID-19 pandemic has affected the educational system
around the world, which has led to an increase in scientific papers dealing with
the implementation of online models in emergency situations. This research
used a combined mixed method to examine the experiences of students, classroom teachers and mathematics teachers, in aim to identify the teaching topics of mathematics which students and teachers considered the easiest when
solving tasks during online teaching, as well as those which were considered
the most difficult. The assumption was that in the teaching process, the biggest problem occurs when solving text tasks with a real-life topic, and that this
problem is directly conditioned by the degree of use of text tasks with a reallife topic by the mathematics teachers. For the purposes of the research, two
(semi)structured questionnaires were constructed. The research was conducted during May 2021 and February–March 2023. The research sample consisted
of students, classroom teachers and mathematics teachers from 13 schools in
the territory of the Republic of Serbia. The research results show that students
found tasks with a theme from life most difficult in the field of geometry, and
the easiest in the field of arithmetic. According to teachers, the reason for this
are the didactic-methodical limitations they encountered while teaching in the
online space.",
publisher = "University of Belgrade, Teacher Education Faculty",
journal = "International Scientific Conference Education during COVID-19 pandemic: experience and lessons learned, book of abstracts",
title = "Teaching mathematics during the pandemic: Students' and teachers' perceptions of the task context",
pages = "297-296",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7422"
}

Vasojević, I., Vasojević, N.,& Vučetić, I.. (2023). Teaching mathematics during the pandemic: Students' and teachers' perceptions of the task context. in International Scientific Conference Education during COVID-19 pandemic: experience and lessons learned, book of abstracts
University of Belgrade, Teacher Education Faculty., 296-297.
https://hdl.handle.net/21.15107/rcub_machinery_7422

Vasojević I, Vasojević N, Vučetić I. Teaching mathematics during the pandemic: Students' and teachers' perceptions of the task context. in International Scientific Conference Education during COVID-19 pandemic: experience and lessons learned, book of abstracts. 2023;:296-297.
https://hdl.handle.net/21.15107/rcub_machinery_7422 .

Vasojević, Irena, Vasojević, Nena, Vučetić, Ivana, "Teaching mathematics during the pandemic: Students' and teachers' perceptions of the task context" in International Scientific Conference Education during COVID-19 pandemic: experience and lessons learned, book of abstracts (2023):296-297,
https://hdl.handle.net/21.15107/rcub_machinery_7422 .

TY  - JOUR
AU  - Stojanović, Anđelka
AU  - Milošević, Isidora
AU  - Arsić, Sanela
AU  - Mihajlović, Ivan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7010
AB  - There is a wide spectrum of industries and company-level features that influence the application of Corporate Social Responsibility to improve the business’s sustainability. This study aims to examine the understanding of the Corporate Social Responsibility concept and the impact of its implementation on sustainability in companies. Therefore, the research proposed and tested two scenarios where five industries sectors were ranked according to the importance (scenario 1) and implementation (scenario 2) of Corporate Social Responsibility activities. The integrated Entropy-TOSIS method to obtain results was employed. The research data were obtained from interviewing employees from Serbia, Russia, and Bulgaria working in various industries. The findings of this study revealed certain differences in perception and implementation of Corporate Social Responsibility depending on the country where the concept is applied as well as among the industries with their specific needs for sustainable development goals achieving. This research can be useful for engineering managers as a roadmap for reaching sustainable business while fulfilling economic, social, and environmental norms as well as stakeholder expectations.
PB  - Taylor & Fransis
T2  - ENGINEERING MANAGEMENT JOURNAL
T1  - Cross-Country Study of Corporate Social Responsibility and Sustainable Development in Various Industries
DO  - 10.1080/10429247.2023.2264156
ER  - 

@article{
author = "Stojanović, Anđelka and Milošević, Isidora and Arsić, Sanela and Mihajlović, Ivan",
year = "2023",
abstract = "There is a wide spectrum of industries and company-level features that influence the application of Corporate Social Responsibility to improve the business’s sustainability. This study aims to examine the understanding of the Corporate Social Responsibility concept and the impact of its implementation on sustainability in companies. Therefore, the research proposed and tested two scenarios where five industries sectors were ranked according to the importance (scenario 1) and implementation (scenario 2) of Corporate Social Responsibility activities. The integrated Entropy-TOSIS method to obtain results was employed. The research data were obtained from interviewing employees from Serbia, Russia, and Bulgaria working in various industries. The findings of this study revealed certain differences in perception and implementation of Corporate Social Responsibility depending on the country where the concept is applied as well as among the industries with their specific needs for sustainable development goals achieving. This research can be useful for engineering managers as a roadmap for reaching sustainable business while fulfilling economic, social, and environmental norms as well as stakeholder expectations.",
publisher = "Taylor & Fransis",
journal = "ENGINEERING MANAGEMENT JOURNAL",
title = "Cross-Country Study of Corporate Social Responsibility and Sustainable Development in Various Industries",
doi = "10.1080/10429247.2023.2264156"
}

Stojanović, A., Milošević, I., Arsić, S.,& Mihajlović, I.. (2023). Cross-Country Study of Corporate Social Responsibility and Sustainable Development in Various Industries. in ENGINEERING MANAGEMENT JOURNAL
Taylor & Fransis..
https://doi.org/10.1080/10429247.2023.2264156

Stojanović A, Milošević I, Arsić S, Mihajlović I. Cross-Country Study of Corporate Social Responsibility and Sustainable Development in Various Industries. in ENGINEERING MANAGEMENT JOURNAL. 2023;.
doi:10.1080/10429247.2023.2264156 .

Stojanović, Anđelka, Milošević, Isidora, Arsić, Sanela, Mihajlović, Ivan, "Cross-Country Study of Corporate Social Responsibility and Sustainable Development in Various Industries" in ENGINEERING MANAGEMENT JOURNAL (2023),
https://doi.org/10.1080/10429247.2023.2264156 . .

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  - 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  - Tabasević, Ilija D.
AU  - Jovanović, Rastko D.
AU  - Milanović, Dragan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3706
AB  - Safe storage of pharmaceutical products is of great importance due to potential hazards for human health. The aim of this study was to assess the ability of phar-maceutical storage to recover design temperature during ventilation system recov-ery. The performed CFD simulations showed good agreement with experimental temperature measurements. Numerical results allowed in-depth analysis of flow field and temperature distribution inside the storage. It was discovered that the flow field is highly non -uniform, which consequently leads to an uneven tempera -ture distribution of pallets with products. However, a high inlet mass-flow rate ensured that all pallets reach the designed temperature.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Experimental and numerical investigation of thermal and flow conditions inside a large pharmaceutical storage after the ventilation system failure
EP  - 814
IS  - 1
SP  - 801
VL  - 26
DO  - 10.2298/TSCI210522346T
ER  - 

@article{
author = "Tabasević, Ilija D. and Jovanović, Rastko D. and Milanović, Dragan",
year = "2022",
abstract = "Safe storage of pharmaceutical products is of great importance due to potential hazards for human health. The aim of this study was to assess the ability of phar-maceutical storage to recover design temperature during ventilation system recov-ery. The performed CFD simulations showed good agreement with experimental temperature measurements. Numerical results allowed in-depth analysis of flow field and temperature distribution inside the storage. It was discovered that the flow field is highly non -uniform, which consequently leads to an uneven tempera -ture distribution of pallets with products. However, a high inlet mass-flow rate ensured that all pallets reach the designed temperature.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Experimental and numerical investigation of thermal and flow conditions inside a large pharmaceutical storage after the ventilation system failure",
pages = "814-801",
number = "1",
volume = "26",
doi = "10.2298/TSCI210522346T"
}

Tabasević, I. D., Jovanović, R. D.,& Milanović, D.. (2022). Experimental and numerical investigation of thermal and flow conditions inside a large pharmaceutical storage after the ventilation system failure. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 26(1), 801-814.
https://doi.org/10.2298/TSCI210522346T

Tabasević ID, Jovanović RD, Milanović D. Experimental and numerical investigation of thermal and flow conditions inside a large pharmaceutical storage after the ventilation system failure. in Thermal Science. 2022;26(1):801-814.
doi:10.2298/TSCI210522346T .

Tabasević, Ilija D., Jovanović, Rastko D., Milanović, Dragan, "Experimental and numerical investigation of thermal and flow conditions inside a large pharmaceutical storage after the ventilation system failure" in Thermal Science, 26, no. 1 (2022):801-814,
https://doi.org/10.2298/TSCI210522346T . .

TY  - JOUR
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Jović, Mihajlo
AU  - Smiciklas, Ivana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3686
AB  - The issue of accumulated seashell waste has been increasingly addressed in the studies of its applicability as a secondary source of calcium carbonate. In this work, the mechanism of the thermo-oxidative degradation of two types of mollusk shells (Dosinia exoleta-DE and oyster Ostrea edulis-OE) was investigated using simultaneous thermal analysis. Physicochemical characterization of raw and calcined materials was performed by XRD and SEM techniques. Results show that increasing powder particle size and heating rate affect the degradation of investigated shells differently and have a significant contribution to released quantities of CO2. It was proposed that the calcination rate of DE powders is determined by the strain-induced collapse of CO2-deficient calcite at its interface with crystalline CaO rods-like structure, with simultaneous expulsion of CO2. A much higher CO2 concentration was identified during the degradation of OE powders, favoring the carbonation reaction and, consequently, increasing the temperature and activation energy of the investigated reaction. Under elevated CO2 concentration, the CaO aggregation step is enhanced by slower reaction kinetics at lower temperatures since both CO2 desorption and structural transformations are probably hindered. The proposed mechanism leads to a meaningful correlation between thermodynamic quantities (enthalpy-entropy compensation) in the form of an iso-kinetic relationship.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetic and thermodynamic analysis of thermo-oxidative degradation of seashell powders with different particle size fractions: compensation effect and iso-equilibrium phenomena
EP  - 2334
IS  - 3
SP  - 2305
VL  - 147
DO  - 10.1007/s10973-020-10474-8
ER  - 

@article{
author = "Janković, Bojan and Manić, Nebojša and Jović, Mihajlo and Smiciklas, Ivana",
year = "2022",
abstract = "The issue of accumulated seashell waste has been increasingly addressed in the studies of its applicability as a secondary source of calcium carbonate. In this work, the mechanism of the thermo-oxidative degradation of two types of mollusk shells (Dosinia exoleta-DE and oyster Ostrea edulis-OE) was investigated using simultaneous thermal analysis. Physicochemical characterization of raw and calcined materials was performed by XRD and SEM techniques. Results show that increasing powder particle size and heating rate affect the degradation of investigated shells differently and have a significant contribution to released quantities of CO2. It was proposed that the calcination rate of DE powders is determined by the strain-induced collapse of CO2-deficient calcite at its interface with crystalline CaO rods-like structure, with simultaneous expulsion of CO2. A much higher CO2 concentration was identified during the degradation of OE powders, favoring the carbonation reaction and, consequently, increasing the temperature and activation energy of the investigated reaction. Under elevated CO2 concentration, the CaO aggregation step is enhanced by slower reaction kinetics at lower temperatures since both CO2 desorption and structural transformations are probably hindered. The proposed mechanism leads to a meaningful correlation between thermodynamic quantities (enthalpy-entropy compensation) in the form of an iso-kinetic relationship.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetic and thermodynamic analysis of thermo-oxidative degradation of seashell powders with different particle size fractions: compensation effect and iso-equilibrium phenomena",
pages = "2334-2305",
number = "3",
volume = "147",
doi = "10.1007/s10973-020-10474-8"
}

Janković, B., Manić, N., Jović, M.,& Smiciklas, I.. (2022). Kinetic and thermodynamic analysis of thermo-oxidative degradation of seashell powders with different particle size fractions: compensation effect and iso-equilibrium phenomena. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 147(3), 2305-2334.
https://doi.org/10.1007/s10973-020-10474-8

Janković B, Manić N, Jović M, Smiciklas I. Kinetic and thermodynamic analysis of thermo-oxidative degradation of seashell powders with different particle size fractions: compensation effect and iso-equilibrium phenomena. in Journal of Thermal Analysis and Calorimetry. 2022;147(3):2305-2334.
doi:10.1007/s10973-020-10474-8 .

Janković, Bojan, Manić, Nebojša, Jović, Mihajlo, Smiciklas, Ivana, "Kinetic and thermodynamic analysis of thermo-oxidative degradation of seashell powders with different particle size fractions: compensation effect and iso-equilibrium phenomena" in Journal of Thermal Analysis and Calorimetry, 147, no. 3 (2022):2305-2334,
https://doi.org/10.1007/s10973-020-10474-8 . .

TY  - JOUR
AU  - Kostadinović, Danka
AU  - Jovanović, Marina
AU  - Bakić, Vukman
AU  - Stepanić, Nenad
AU  - Todorović, Maja
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3727
AB  - Green roof systems have become an important part in creating sustainable cities. They can provide a wide range of economic, environmental, and social benefits. The goal of this research was to quantify the thermal performance improvements from a green roof with mineral wool substrate installed on a school building in a humid subtropical climate. In-situ measurements during a summer period included heat fluxes through the green and reference roof, vertical temperature profile through both roofs, the local air temperature above roofs, and local meteorological parameters. Furthermore, the summer thermal performance of green and reference roof and the green roof cooling effect were evaluated concerning meteorological parameters using the Pearson correlation analysis. The results indicate that the green roof layers have improved thermal performance of the roof with respect to reduced conductive heat flow by 57% and delayed heat transfer. The maximum and averaged reference roof to green roof outdoor surface temperature difference was 27.5 degrees C and 5.5 degrees C, respectively. It was found that ambient temperature and relative humidity have a dominant role on the thermal performance of the green and reference roof, while solar radiation and ambient temperature present the key meteorological determinants of the green roof cooling effect.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Building and Environment
T1  - Experimental investigation of summer thermal performance of the green roof system with mineral wool substrate
VL  - 217
DO  - 10.1016/j.buildenv.2022.109061
ER  - 

@article{
author = "Kostadinović, Danka and Jovanović, Marina and Bakić, Vukman and Stepanić, Nenad and Todorović, Maja",
year = "2022",
abstract = "Green roof systems have become an important part in creating sustainable cities. They can provide a wide range of economic, environmental, and social benefits. The goal of this research was to quantify the thermal performance improvements from a green roof with mineral wool substrate installed on a school building in a humid subtropical climate. In-situ measurements during a summer period included heat fluxes through the green and reference roof, vertical temperature profile through both roofs, the local air temperature above roofs, and local meteorological parameters. Furthermore, the summer thermal performance of green and reference roof and the green roof cooling effect were evaluated concerning meteorological parameters using the Pearson correlation analysis. The results indicate that the green roof layers have improved thermal performance of the roof with respect to reduced conductive heat flow by 57% and delayed heat transfer. The maximum and averaged reference roof to green roof outdoor surface temperature difference was 27.5 degrees C and 5.5 degrees C, respectively. It was found that ambient temperature and relative humidity have a dominant role on the thermal performance of the green and reference roof, while solar radiation and ambient temperature present the key meteorological determinants of the green roof cooling effect.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Building and Environment",
title = "Experimental investigation of summer thermal performance of the green roof system with mineral wool substrate",
volume = "217",
doi = "10.1016/j.buildenv.2022.109061"
}

Kostadinović, D., Jovanović, M., Bakić, V., Stepanić, N.,& Todorović, M.. (2022). Experimental investigation of summer thermal performance of the green roof system with mineral wool substrate. in Building and Environment
Pergamon-Elsevier Science Ltd, Oxford., 217.
https://doi.org/10.1016/j.buildenv.2022.109061

Kostadinović D, Jovanović M, Bakić V, Stepanić N, Todorović M. Experimental investigation of summer thermal performance of the green roof system with mineral wool substrate. in Building and Environment. 2022;217.
doi:10.1016/j.buildenv.2022.109061 .

Kostadinović, Danka, Jovanović, Marina, Bakić, Vukman, Stepanić, Nenad, Todorović, Maja, "Experimental investigation of summer thermal performance of the green roof system with mineral wool substrate" in Building and Environment, 217 (2022),
https://doi.org/10.1016/j.buildenv.2022.109061 . .

TY  - JOUR
AU  - Mastilović, Sreten
AU  - Đorđević, Branislav R.
AU  - Sedmak, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3777
AB  - Ever since the 1980s there is a sustained interest in the size effect, as one of the most pronounced consequences of fracture mechanics. In the present study, the investigation of the size effect is focused on estimation of the Weibull cumulative distribution function (CDF) of the critical value of the J-integral (J(c)) in the transition temperature region under constraint of a small statistical sample size. Specifically, the J(c) experimental data correspond to the C(T) specimen testing of the reactor pressure-vessel steel 20MnMoNi55 at only two geometrically-similar sizes. Thus, a simple approximate scaling algorithm has been developed to tackle the effect of the C(T) specimen size on the J(c) CDF under these circumstances. Due to the specific form of the two-parameter Weibull CDF, F(J(c) vertical bar beta, eta), the scaling procedure is applied according to a two-step scheme. First, the J(c)-scaling is performed to ensure the approximate overlap of the points that correspond to the CDF value F(J(c) = eta) = 1 - 1/e approximate to 0.632 for different C(T) specimen widths (W), which assumes eta.W-kappa= const. Second, the F-scaling is performed to ensure the equality of the slopes of the CDF in the scaled (F.W(xi)vs. J(c).W-kappa) space. The objective of the sketched approach is to obtain a size-dependent J(c) CDF that encapsulates a reasonably conservative data extrapolation.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - A scaling approach to size effect modeling of J(c) CDF for 20MnMoNi55 reactor steel in transition temperature region
VL  - 131
DO  - 10.1016/j.engfailanal.2021.105838
ER  - 

@article{
author = "Mastilović, Sreten and Đorđević, Branislav R. and Sedmak, Aleksandar",
year = "2022",
abstract = "Ever since the 1980s there is a sustained interest in the size effect, as one of the most pronounced consequences of fracture mechanics. In the present study, the investigation of the size effect is focused on estimation of the Weibull cumulative distribution function (CDF) of the critical value of the J-integral (J(c)) in the transition temperature region under constraint of a small statistical sample size. Specifically, the J(c) experimental data correspond to the C(T) specimen testing of the reactor pressure-vessel steel 20MnMoNi55 at only two geometrically-similar sizes. Thus, a simple approximate scaling algorithm has been developed to tackle the effect of the C(T) specimen size on the J(c) CDF under these circumstances. Due to the specific form of the two-parameter Weibull CDF, F(J(c) vertical bar beta, eta), the scaling procedure is applied according to a two-step scheme. First, the J(c)-scaling is performed to ensure the approximate overlap of the points that correspond to the CDF value F(J(c) = eta) = 1 - 1/e approximate to 0.632 for different C(T) specimen widths (W), which assumes eta.W-kappa= const. Second, the F-scaling is performed to ensure the equality of the slopes of the CDF in the scaled (F.W(xi)vs. J(c).W-kappa) space. The objective of the sketched approach is to obtain a size-dependent J(c) CDF that encapsulates a reasonably conservative data extrapolation.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "A scaling approach to size effect modeling of J(c) CDF for 20MnMoNi55 reactor steel in transition temperature region",
volume = "131",
doi = "10.1016/j.engfailanal.2021.105838"
}

Mastilović, S., Đorđević, B. R.,& Sedmak, A.. (2022). A scaling approach to size effect modeling of J(c) CDF for 20MnMoNi55 reactor steel in transition temperature region. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 131.
https://doi.org/10.1016/j.engfailanal.2021.105838

Mastilović S, Đorđević BR, Sedmak A. A scaling approach to size effect modeling of J(c) CDF for 20MnMoNi55 reactor steel in transition temperature region. in Engineering Failure Analysis. 2022;131.
doi:10.1016/j.engfailanal.2021.105838 .

Mastilović, Sreten, Đorđević, Branislav R., Sedmak, Aleksandar, "A scaling approach to size effect modeling of J(c) CDF for 20MnMoNi55 reactor steel in transition temperature region" in Engineering Failure Analysis, 131 (2022),
https://doi.org/10.1016/j.engfailanal.2021.105838 . .

TY  - JOUR
AU  - Radojević, Miloš
AU  - Janković, Bojan
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir
AU  - Ceković, Ivana
AU  - Manić, Nebojša
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3517
AB  - This paper provides in-depth knowledge about the evolved gas analysis interpretation via newly proposed semi-quantitative approach, arising from thermogravimetric analysis (TGA) - mass spectrometry (MS) coupled measurements, for studying pyrolysis behavior of three kinds of biomass waste materials (spent coffee grounds, beech sawdust and wheat straw). TGA - MS coupling allows accurate correlation between molecular ion peak and fragment peaks to the corresponding mass loss rates from derivative thermogravimetry curves. Within proposed semi-quantitative analysis, MS spectra were interpreted through the comparative analysis of compounds fragments and of the compound itself, where the single atomic mass unit was identified by multiple compounds exhibition. It was shown that by this procedure which involves overlapping multiple curves supervising, the identification of gases in volatiles complex scheme becomes more simplified. By setting up semi-quantitative formulas, easy and reliable calculations of gaseous products yield and syngas energy capacities are possible to achieve. The H-2/CO ratio derived from the proposed method for wood waste product (sawdust) is in an excellent agreement with H-2/CO ratio for sawdust syngas production, in fuel reactor for biomass gasification and H-2 production.
PB  - Elsevier, Amsterdam
T2  - Thermochimica Acta
T1  - Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination
VL  - 699
DO  - 10.1016/j.tca.2021.178912
ER  - 

@article{
author = "Radojević, Miloš and Janković, Bojan and Stojiljković, Dragoslava and Jovanović, Vladimir and Ceković, Ivana and Manić, Nebojša",
year = "2021",
abstract = "This paper provides in-depth knowledge about the evolved gas analysis interpretation via newly proposed semi-quantitative approach, arising from thermogravimetric analysis (TGA) - mass spectrometry (MS) coupled measurements, for studying pyrolysis behavior of three kinds of biomass waste materials (spent coffee grounds, beech sawdust and wheat straw). TGA - MS coupling allows accurate correlation between molecular ion peak and fragment peaks to the corresponding mass loss rates from derivative thermogravimetry curves. Within proposed semi-quantitative analysis, MS spectra were interpreted through the comparative analysis of compounds fragments and of the compound itself, where the single atomic mass unit was identified by multiple compounds exhibition. It was shown that by this procedure which involves overlapping multiple curves supervising, the identification of gases in volatiles complex scheme becomes more simplified. By setting up semi-quantitative formulas, easy and reliable calculations of gaseous products yield and syngas energy capacities are possible to achieve. The H-2/CO ratio derived from the proposed method for wood waste product (sawdust) is in an excellent agreement with H-2/CO ratio for sawdust syngas production, in fuel reactor for biomass gasification and H-2 production.",
publisher = "Elsevier, Amsterdam",
journal = "Thermochimica Acta",
title = "Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination",
volume = "699",
doi = "10.1016/j.tca.2021.178912"
}

Radojević, M., Janković, B., Stojiljković, D., Jovanović, V., Ceković, I.,& Manić, N.. (2021). Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination. in Thermochimica Acta
Elsevier, Amsterdam., 699.
https://doi.org/10.1016/j.tca.2021.178912

Radojević M, Janković B, Stojiljković D, Jovanović V, Ceković I, Manić N. Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination. in Thermochimica Acta. 2021;699.
doi:10.1016/j.tca.2021.178912 .

Radojević, Miloš, Janković, Bojan, Stojiljković, Dragoslava, Jovanović, Vladimir, Ceković, Ivana, Manić, Nebojša, "Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination" in Thermochimica Acta, 699 (2021),
https://doi.org/10.1016/j.tca.2021.178912 . .

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  - Vasojević, Nena
AU  - Vučetić, Ivana
AU  - Kirin, Snežana
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7174
AB  - Following the declaration of the state of emergency in Serbia, after the
novel COVID-19 outbreak was declared a global pandemic, all the educational institutions
in the country were closed, and the different modes of emergency remote teaching (ЕRТ)
were introduced. In order to highlight the problems and attitudes of students, in regard
to the newly introduced online-based emergency remote teaching model, we conducted
a survey with high school students. The research question was how the unplanned switch
from the traditional learning setting to online learning affected the learning practice, and
what the outcomes of the integration of digital technology in education are. The aim of the
study was to determine the best advantages and the biggest disadvantages of the introduced
emergency remote teaching model, from the students’ point of view, during the initial phase
of the teaching model implementation. The obtained results indicated the best advantages
of the applied learning model in the domain of learning time management opportunities,
and the biggest disadvantages in relation to the teaching and learning technical support
problems and social distance. The results of this study could be used by policymakers and
practitioners in order to prepare plans and programs for emergency remote teaching, and
also to improve traditional teaching models.
PB  - Fakultet pedagoških nauka Univerziteta u Kragujevcu
T2  - Uzdanica [Special issue]
T1  - High school students’ perceptions of emergency remote teaching in Serbia during the Covid-19 pandemic
EP  - 50
IS  - 2
SP  - 35
VL  - 8
DO  - 10.46793/uzdanica18.ii.035v
ER  - 

@inbook{
author = "Vasojević, Nena and Vučetić, Ivana and Kirin, Snežana",
year = "2021",
abstract = "Following the declaration of the state of emergency in Serbia, after the
novel COVID-19 outbreak was declared a global pandemic, all the educational institutions
in the country were closed, and the different modes of emergency remote teaching (ЕRТ)
were introduced. In order to highlight the problems and attitudes of students, in regard
to the newly introduced online-based emergency remote teaching model, we conducted
a survey with high school students. The research question was how the unplanned switch
from the traditional learning setting to online learning affected the learning practice, and
what the outcomes of the integration of digital technology in education are. The aim of the
study was to determine the best advantages and the biggest disadvantages of the introduced
emergency remote teaching model, from the students’ point of view, during the initial phase
of the teaching model implementation. The obtained results indicated the best advantages
of the applied learning model in the domain of learning time management opportunities,
and the biggest disadvantages in relation to the teaching and learning technical support
problems and social distance. The results of this study could be used by policymakers and
practitioners in order to prepare plans and programs for emergency remote teaching, and
also to improve traditional teaching models.",
publisher = "Fakultet pedagoških nauka Univerziteta u Kragujevcu",
journal = "Uzdanica [Special issue]",
booktitle = "High school students’ perceptions of emergency remote teaching in Serbia during the Covid-19 pandemic",
pages = "50-35",
number = "2",
volume = "8",
doi = "10.46793/uzdanica18.ii.035v"
}

Vasojević, N., Vučetić, I.,& Kirin, S.. (2021). High school students’ perceptions of emergency remote teaching in Serbia during the Covid-19 pandemic. in Uzdanica [Special issue]
Fakultet pedagoških nauka Univerziteta u Kragujevcu., 8(2), 35-50.
https://doi.org/10.46793/uzdanica18.ii.035v

Vasojević N, Vučetić I, Kirin S. High school students’ perceptions of emergency remote teaching in Serbia during the Covid-19 pandemic. in Uzdanica [Special issue]. 2021;8(2):35-50.
doi:10.46793/uzdanica18.ii.035v .

Vasojević, Nena, Vučetić, Ivana, Kirin, Snežana, "High school students’ perceptions of emergency remote teaching in Serbia during the Covid-19 pandemic" in Uzdanica [Special issue], 8, no. 2 (2021):35-50,
https://doi.org/10.46793/uzdanica18.ii.035v . .

TY  - CONF
AU  - Kastratović, Gordana
AU  - Grbović, Aleksandar
AU  - Sedmak, Aleksandar
AU  - Bozić, Z.
AU  - Sedmak, Simon
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3598
AB  - In this paper determination of mechanical properties of composite material using experimental and numerical approach is presented. The mechanical properties of a laminate obtained in the experiment are used for verification of numerically obtained values, as well as estimation of the load-carrying capacities of composite engine cover of light aircraft. Composite specimens, consisting of epoxy matrix and glass fibers with orientation angles 0 degrees, 45 degrees, and 90 degrees, have been made according to standards, and the mechanical properties were investigated in tensile and three-point bending tests. The tensile strength, bending strength, elasticity modulus, strain, and force at laminate failure have been evaluated and then compared to values obtained in numerical simulations with the aim of verifying the FE model used for failure prediction of structural laminates. Good agreement of experimental and numerical values provides a solid foundation for further improvements of the numerical model.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)
T1  - Composite material selection for aircraft structures based on experimental and numerical evaluation of mechanical properties
EP  - 133
SP  - 127
VL  - 31
DO  - 10.1016/j.prostr.2021.03.021
ER  - 

@conference{
author = "Kastratović, Gordana and Grbović, Aleksandar and Sedmak, Aleksandar and Bozić, Z. and Sedmak, Simon",
year = "2021",
abstract = "In this paper determination of mechanical properties of composite material using experimental and numerical approach is presented. The mechanical properties of a laminate obtained in the experiment are used for verification of numerically obtained values, as well as estimation of the load-carrying capacities of composite engine cover of light aircraft. Composite specimens, consisting of epoxy matrix and glass fibers with orientation angles 0 degrees, 45 degrees, and 90 degrees, have been made according to standards, and the mechanical properties were investigated in tensile and three-point bending tests. The tensile strength, bending strength, elasticity modulus, strain, and force at laminate failure have been evaluated and then compared to values obtained in numerical simulations with the aim of verifying the FE model used for failure prediction of structural laminates. Good agreement of experimental and numerical values provides a solid foundation for further improvements of the numerical model.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)",
title = "Composite material selection for aircraft structures based on experimental and numerical evaluation of mechanical properties",
pages = "133-127",
volume = "31",
doi = "10.1016/j.prostr.2021.03.021"
}

Kastratović, G., Grbović, A., Sedmak, A., Bozić, Z.,& Sedmak, S.. (2021). Composite material selection for aircraft structures based on experimental and numerical evaluation of mechanical properties. in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)
Elsevier Science Bv, Amsterdam., 31, 127-133.
https://doi.org/10.1016/j.prostr.2021.03.021

Kastratović G, Grbović A, Sedmak A, Bozić Z, Sedmak S. Composite material selection for aircraft structures based on experimental and numerical evaluation of mechanical properties. in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020). 2021;31:127-133.
doi:10.1016/j.prostr.2021.03.021 .

Kastratović, Gordana, Grbović, Aleksandar, Sedmak, Aleksandar, Bozić, Z., Sedmak, Simon, "Composite material selection for aircraft structures based on experimental and numerical evaluation of mechanical properties" in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020), 31 (2021):127-133,
https://doi.org/10.1016/j.prostr.2021.03.021 . .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Đorđević, Dragan M.
AU  - Stanković, Maja N.
AU  - Paunović, Vesna
AU  - Krstić, Nenad S.
AU  - Manojlović, Jelena
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3564
AB  - The Global Energy Crisis necessitated improving research into new, renewable and alternative energy sources. Due to that, our focus is on the area of some phenomena and applications where different synthetic methods and microstructure property optimization achieved significant improvement in the electro physical properties of output materials and components. This is especially important for higher energy efficiency and electricity production (batteries and battery systems, fuel cells, and hydrogen energy). The improvement of energy storage tank capacity is one of the most important development issues in the energy sphere too. It is because of this very promising research and application area that we are expanding the knowledge on these phenomena through fractal nature analysis. So, the results obtained in the field of electrochemical energy sources, especially in electrolyte development, are taken into account the analysis of fractal nature optimization. Based on the research field of fractal material science, particularly electronic materials, we conducted research in micro-structure fractal influence in the area of electrochemistry. We investigated the consolidation parameters of Fe2O3 redox processes. The influence of activation energy, fundamental thermodynamic parameters, and also the fractal correction of electrode surface area through complex fractal dimension with recognized grains and pores, and the Brownian motion of particles is introduced. Finally, the electrochemical Butler-Volmer equation fractalization is obtained. These results practically open new frontiers in electrochemical energy processes performed through the Arrhenius equation within electrolyte bulk and electrode relations and more complete and precise energy generation.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Butler-volmer current equation and fractal nature correction in electrochemical energy
EP  - 1848
IS  - 3
SP  - 1837
VL  - 25
DO  - 10.2298/TSCI200117232M
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Đorđević, Dragan M. and Stanković, Maja N. and Paunović, Vesna and Krstić, Nenad S. and Manojlović, Jelena",
year = "2021",
abstract = "The Global Energy Crisis necessitated improving research into new, renewable and alternative energy sources. Due to that, our focus is on the area of some phenomena and applications where different synthetic methods and microstructure property optimization achieved significant improvement in the electro physical properties of output materials and components. This is especially important for higher energy efficiency and electricity production (batteries and battery systems, fuel cells, and hydrogen energy). The improvement of energy storage tank capacity is one of the most important development issues in the energy sphere too. It is because of this very promising research and application area that we are expanding the knowledge on these phenomena through fractal nature analysis. So, the results obtained in the field of electrochemical energy sources, especially in electrolyte development, are taken into account the analysis of fractal nature optimization. Based on the research field of fractal material science, particularly electronic materials, we conducted research in micro-structure fractal influence in the area of electrochemistry. We investigated the consolidation parameters of Fe2O3 redox processes. The influence of activation energy, fundamental thermodynamic parameters, and also the fractal correction of electrode surface area through complex fractal dimension with recognized grains and pores, and the Brownian motion of particles is introduced. Finally, the electrochemical Butler-Volmer equation fractalization is obtained. These results practically open new frontiers in electrochemical energy processes performed through the Arrhenius equation within electrolyte bulk and electrode relations and more complete and precise energy generation.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Butler-volmer current equation and fractal nature correction in electrochemical energy",
pages = "1848-1837",
number = "3",
volume = "25",
doi = "10.2298/TSCI200117232M"
}

Mitić, V. V., Lazović, G., Đorđević, D. M., Stanković, M. N., Paunović, V., Krstić, N. S.,& Manojlović, J.. (2021). Butler-volmer current equation and fractal nature correction in electrochemical energy. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 25(3), 1837-1848.
https://doi.org/10.2298/TSCI200117232M

Mitić VV, Lazović G, Đorđević DM, Stanković MN, Paunović V, Krstić NS, Manojlović J. Butler-volmer current equation and fractal nature correction in electrochemical energy. in Thermal Science. 2021;25(3):1837-1848.
doi:10.2298/TSCI200117232M .

Mitić, Vojislav V., Lazović, Goran, Đorđević, Dragan M., Stanković, Maja N., Paunović, Vesna, Krstić, Nenad S., Manojlović, Jelena, "Butler-volmer current equation and fractal nature correction in electrochemical energy" in Thermal Science, 25, no. 3 (2021):1837-1848,
https://doi.org/10.2298/TSCI200117232M . .

TY  - JOUR
AU  - Milicević, Aleksandar
AU  - Belošević, Srđan V.
AU  - Crnomarković, Nenad
AU  - Tomanović, Ivan
AU  - Stojanović, Andrijana
AU  - Tucaković, Dragan
AU  - Deng, Lei
AU  - Che, Defu
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3491
AB  - The co-combustion of biomass and coal in a utility boiler could provide cleaner power production and ensure sustainable utilization of the solid fuels. This paper aims to numerically investigate complex pro-cesses in the tangentially-fired 900 MWth boiler furnace during direct co-firing of lignite and biomass with 10% thermal share of agricultural residues (wheat straw, corn straw and soybean straw) under vari-able boiler loads (100%, 85% and 70%). Simulations are conducted by means of in-house developed com-puter code, supported by the specially designed user-friendly graphical interface. Co-firing of agricultural residues provides lower pollutant emissions, somewhat higher furnace exit gas temperature and increase in unburnt carbon in bottom/fly ash, compared to the lignite combustion without biomass. Soybean is found to be the most suitable for co-firing regarding its ash melting point, however due to its abundance and availability the wheat straw is selected for this study. Co-combustion at partial boiler loads results in reduction of NOx and SOx up to 34% and 9.5%, respectively. Burners arrangement and furnace aerody-namics affect the abatement of pollutants. This study may help the global effort s in fighting the climate change, efficiently and cost-effectively, thus offering considerable economic and social benefits.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions
VL  - 181
DO  - 10.1016/j.ijheatmasstransfer.2021.121728
ER  - 

@article{
author = "Milicević, Aleksandar and Belošević, Srđan V. and Crnomarković, Nenad and Tomanović, Ivan and Stojanović, Andrijana and Tucaković, Dragan and Deng, Lei and Che, Defu",
year = "2021",
abstract = "The co-combustion of biomass and coal in a utility boiler could provide cleaner power production and ensure sustainable utilization of the solid fuels. This paper aims to numerically investigate complex pro-cesses in the tangentially-fired 900 MWth boiler furnace during direct co-firing of lignite and biomass with 10% thermal share of agricultural residues (wheat straw, corn straw and soybean straw) under vari-able boiler loads (100%, 85% and 70%). Simulations are conducted by means of in-house developed com-puter code, supported by the specially designed user-friendly graphical interface. Co-firing of agricultural residues provides lower pollutant emissions, somewhat higher furnace exit gas temperature and increase in unburnt carbon in bottom/fly ash, compared to the lignite combustion without biomass. Soybean is found to be the most suitable for co-firing regarding its ash melting point, however due to its abundance and availability the wheat straw is selected for this study. Co-combustion at partial boiler loads results in reduction of NOx and SOx up to 34% and 9.5%, respectively. Burners arrangement and furnace aerody-namics affect the abatement of pollutants. This study may help the global effort s in fighting the climate change, efficiently and cost-effectively, thus offering considerable economic and social benefits.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions",
volume = "181",
doi = "10.1016/j.ijheatmasstransfer.2021.121728"
}

Milicević, A., Belošević, S. V., Crnomarković, N., Tomanović, I., Stojanović, A., Tucaković, D., Deng, L.,& Che, D.. (2021). Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions. in International Journal of Heat and Mass Transfer
Pergamon-Elsevier Science Ltd, Oxford., 181.
https://doi.org/10.1016/j.ijheatmasstransfer.2021.121728

Milicević A, Belošević SV, Crnomarković N, Tomanović I, Stojanović A, Tucaković D, Deng L, Che D. Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions. in International Journal of Heat and Mass Transfer. 2021;181.
doi:10.1016/j.ijheatmasstransfer.2021.121728 .

Milicević, Aleksandar, Belošević, Srđan V., Crnomarković, Nenad, Tomanović, Ivan, Stojanović, Andrijana, Tucaković, Dragan, Deng, Lei, Che, Defu, "Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions" in International Journal of Heat and Mass Transfer, 181 (2021),
https://doi.org/10.1016/j.ijheatmasstransfer.2021.121728 . .

TY  - JOUR
AU  - Manić, Nebojša
AU  - Janković, Bojan
AU  - Dodevski, Vladimir
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3559
AB  - As representative among biomass feedstocks, Poplar fluff was chosen to analyze the pyrolysis properties of this new biofuel. Thermogravimetry under inert (argon) atmosphere at the heating rates of 5, 10, 15, and 20 degrees C min(-1)was employed in the investigation of thermal processing of studied biomass. The determination of kinetic parameters and estimation of reaction mechanism function were done through application of the state-of-the-art NETZSCH Kinetics NEO software. With this aim, the various model-free models and model-based calculations were implemented. The obtained results showed that the most appropriate kinetic model to describe the thermal decomposition of Poplar fluff sample wasn-dimensional acceleratory Avrami-Erofeev model (An) for three-step consecutive reaction mechanism. Governed reaction pathway in pyrolysis process represents fragmentation reactions which arise from levoglucosan decomposing that permits permanent gases and refractory tars, where diffusion-controlled process is involved in the sample devolatilization. The modulated and multiple-step predictions of pyrolysis process were also carried out.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Model-free and model-based kinetic analysis of Poplar fluff (Populus alba) pyrolysis process under dynamic conditions
EP  - 3438
IS  - 5
SP  - 3419
VL  - 143
DO  - 10.1007/s10973-020-09675-y
ER  - 

@article{
author = "Manić, Nebojša and Janković, Bojan and Dodevski, Vladimir",
year = "2021",
abstract = "As representative among biomass feedstocks, Poplar fluff was chosen to analyze the pyrolysis properties of this new biofuel. Thermogravimetry under inert (argon) atmosphere at the heating rates of 5, 10, 15, and 20 degrees C min(-1)was employed in the investigation of thermal processing of studied biomass. The determination of kinetic parameters and estimation of reaction mechanism function were done through application of the state-of-the-art NETZSCH Kinetics NEO software. With this aim, the various model-free models and model-based calculations were implemented. The obtained results showed that the most appropriate kinetic model to describe the thermal decomposition of Poplar fluff sample wasn-dimensional acceleratory Avrami-Erofeev model (An) for three-step consecutive reaction mechanism. Governed reaction pathway in pyrolysis process represents fragmentation reactions which arise from levoglucosan decomposing that permits permanent gases and refractory tars, where diffusion-controlled process is involved in the sample devolatilization. The modulated and multiple-step predictions of pyrolysis process were also carried out.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Model-free and model-based kinetic analysis of Poplar fluff (Populus alba) pyrolysis process under dynamic conditions",
pages = "3438-3419",
number = "5",
volume = "143",
doi = "10.1007/s10973-020-09675-y"
}

Manić, N., Janković, B.,& Dodevski, V.. (2021). Model-free and model-based kinetic analysis of Poplar fluff (Populus alba) pyrolysis process under dynamic conditions. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 143(5), 3419-3438.
https://doi.org/10.1007/s10973-020-09675-y

Manić N, Janković B, Dodevski V. Model-free and model-based kinetic analysis of Poplar fluff (Populus alba) pyrolysis process under dynamic conditions. in Journal of Thermal Analysis and Calorimetry. 2021;143(5):3419-3438.
doi:10.1007/s10973-020-09675-y .

Manić, Nebojša, Janković, Bojan, Dodevski, Vladimir, "Model-free and model-based kinetic analysis of Poplar fluff (Populus alba) pyrolysis process under dynamic conditions" in Journal of Thermal Analysis and Calorimetry, 143, no. 5 (2021):3419-3438,
https://doi.org/10.1007/s10973-020-09675-y . .

TY  - JOUR
AU  - Janković, Bojan
AU  - Manić, Nebojša
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3502
AB  - Thermally accelerated oxidative degradation of wolfberry pulp was kinetically monitored using model-free and model-based approaches. Kinetic calculations were performed based on simultaneous thermal analysis measurements in an air at four different heating rates. From kinetic analysis, new developed mechanistic scheme which is responsible for wolfberries anti-oxidative behavior was proposed. It was found that thermo-oxidative process proceeds through multiplestep mechanism including sum of two independent reaction sets, via consecutive and competitive steps. It was established that rutoside degradation pathway to flavonol through hydrolysis reaction is rate-determining step of considered process. Furthermore, it was found that key flavonol compound degraded by competitive reactions mechanism forming such kinetic branches, which lead to compounds responsible for wolfberries antioxidant activity. It was established that flavonol oxidative cleavage reaction and oxidative polymerization are main chemical routes which are very important in a complex antioxidant mechanism for scavenging free radicals in wolfberries oxidative stress response.
PB  - Elsevier Sci Ltd, Oxford
T2  - Food Chemistry
T1  - Model-free and model-based analysis of thermo-oxidative response of wolfberries: A new developed mechanistic scheme
VL  - 343
DO  - 10.1016/j.foodchem.2020.128530
ER  - 

@article{
author = "Janković, Bojan and Manić, Nebojša",
year = "2021",
abstract = "Thermally accelerated oxidative degradation of wolfberry pulp was kinetically monitored using model-free and model-based approaches. Kinetic calculations were performed based on simultaneous thermal analysis measurements in an air at four different heating rates. From kinetic analysis, new developed mechanistic scheme which is responsible for wolfberries anti-oxidative behavior was proposed. It was found that thermo-oxidative process proceeds through multiplestep mechanism including sum of two independent reaction sets, via consecutive and competitive steps. It was established that rutoside degradation pathway to flavonol through hydrolysis reaction is rate-determining step of considered process. Furthermore, it was found that key flavonol compound degraded by competitive reactions mechanism forming such kinetic branches, which lead to compounds responsible for wolfberries antioxidant activity. It was established that flavonol oxidative cleavage reaction and oxidative polymerization are main chemical routes which are very important in a complex antioxidant mechanism for scavenging free radicals in wolfberries oxidative stress response.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Food Chemistry",
title = "Model-free and model-based analysis of thermo-oxidative response of wolfberries: A new developed mechanistic scheme",
volume = "343",
doi = "10.1016/j.foodchem.2020.128530"
}

Janković, B.,& Manić, N.. (2021). Model-free and model-based analysis of thermo-oxidative response of wolfberries: A new developed mechanistic scheme. in Food Chemistry
Elsevier Sci Ltd, Oxford., 343.
https://doi.org/10.1016/j.foodchem.2020.128530

Janković B, Manić N. Model-free and model-based analysis of thermo-oxidative response of wolfberries: A new developed mechanistic scheme. in Food Chemistry. 2021;343.
doi:10.1016/j.foodchem.2020.128530 .

Janković, Bojan, Manić, Nebojša, "Model-free and model-based analysis of thermo-oxidative response of wolfberries: A new developed mechanistic scheme" in Food Chemistry, 343 (2021),
https://doi.org/10.1016/j.foodchem.2020.128530 . .

TY  - JOUR
AU  - Vasić, Zoran M.
AU  - Maksimović, Katarina
AU  - Maksimović, Mirko S.
AU  - Vasović, Ivana
AU  - Vidanović, Nenad
AU  - Simonović, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3578
AB  - The thermo mechanical buckling and post-buckling behavior of layered composite shell type structure are considered with the finite element method under the combination of temperature load and applied mechanical loads. To account for through-thickness shear deformation effects, the thermal elastic, and higher-order shear deformation theory is used in this study. The refined higher order theories, that takes into account the effect of transverse normal deformation, is used to develop discrete finite element models for the thermal buckling analysis of composite laminates. Attention in this study is focused on analyzing the temperature effects on buckling and post-buckling behavior of thin shell structural components. Special attention in this paper is focused on studying of values of the hole in curved panel on thermal buckling behavior and consequently to expend and upgrade previously conducted investigation. Using finite element method, a broader observation of the critical temperature of loss of stability depending on the size of the hole was conducted. The presented numerical results based on higher-order shear deformation theory can be used as versatile and accurate method for buckling and post-buckling analyzes of thin-walled laminated plates under thermo mechanical loads.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Buckling and post-buckling behavior of shell type structures under thermo mechanical loads
EP  - 4357
IS  - 6
SP  - 4347
VL  - 25
DO  - 10.2298/TSCI201129079V
ER  - 

@article{
author = "Vasić, Zoran M. and Maksimović, Katarina and Maksimović, Mirko S. and Vasović, Ivana and Vidanović, Nenad and Simonović, Aleksandar",
year = "2021",
abstract = "The thermo mechanical buckling and post-buckling behavior of layered composite shell type structure are considered with the finite element method under the combination of temperature load and applied mechanical loads. To account for through-thickness shear deformation effects, the thermal elastic, and higher-order shear deformation theory is used in this study. The refined higher order theories, that takes into account the effect of transverse normal deformation, is used to develop discrete finite element models for the thermal buckling analysis of composite laminates. Attention in this study is focused on analyzing the temperature effects on buckling and post-buckling behavior of thin shell structural components. Special attention in this paper is focused on studying of values of the hole in curved panel on thermal buckling behavior and consequently to expend and upgrade previously conducted investigation. Using finite element method, a broader observation of the critical temperature of loss of stability depending on the size of the hole was conducted. The presented numerical results based on higher-order shear deformation theory can be used as versatile and accurate method for buckling and post-buckling analyzes of thin-walled laminated plates under thermo mechanical loads.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Buckling and post-buckling behavior of shell type structures under thermo mechanical loads",
pages = "4357-4347",
number = "6",
volume = "25",
doi = "10.2298/TSCI201129079V"
}

Vasić, Z. M., Maksimović, K., Maksimović, M. S., Vasović, I., Vidanović, N.,& Simonović, A.. (2021). Buckling and post-buckling behavior of shell type structures under thermo mechanical loads. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 25(6), 4347-4357.
https://doi.org/10.2298/TSCI201129079V

Vasić ZM, Maksimović K, Maksimović MS, Vasović I, Vidanović N, Simonović A. Buckling and post-buckling behavior of shell type structures under thermo mechanical loads. in Thermal Science. 2021;25(6):4347-4357.
doi:10.2298/TSCI201129079V .

Vasić, Zoran M., Maksimović, Katarina, Maksimović, Mirko S., Vasović, Ivana, Vidanović, Nenad, Simonović, Aleksandar, "Buckling and post-buckling behavior of shell type structures under thermo mechanical loads" in Thermal Science, 25, no. 6 (2021):4347-4357,
https://doi.org/10.2298/TSCI201129079V . .

TY  - JOUR
AU  - Mirkov, Nikola
AU  - Radenović, Stojan
AU  - Radojević, Slobodan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3519
AB  - The main purpose of this article is to improve, generalize and complement some recently established results for Perov's type F-contractions. In our approach, we use only the property (F1) of Wardowski while other authors employed all three conditions. Working only with the fact that the function F is strictly increasing on (0, +infinity)(m), we obtain as a consequence new families of contractive conditions in the realm of vector-valued metric spaces of Perov's type. At the end of the article, we present an example that supports obtained theoretical results and genuinely generalizes several known results in existing literature.
PB  - MDPI, Basel
T2  - Axioms
T1  - Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type
IS  - 2
VL  - 10
DO  - 10.3390/axioms10020127
ER  - 

@article{
author = "Mirkov, Nikola and Radenović, Stojan and Radojević, Slobodan",
year = "2021",
abstract = "The main purpose of this article is to improve, generalize and complement some recently established results for Perov's type F-contractions. In our approach, we use only the property (F1) of Wardowski while other authors employed all three conditions. Working only with the fact that the function F is strictly increasing on (0, +infinity)(m), we obtain as a consequence new families of contractive conditions in the realm of vector-valued metric spaces of Perov's type. At the end of the article, we present an example that supports obtained theoretical results and genuinely generalizes several known results in existing literature.",
publisher = "MDPI, Basel",
journal = "Axioms",
title = "Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type",
number = "2",
volume = "10",
doi = "10.3390/axioms10020127"
}

Mirkov, N., Radenović, S.,& Radojević, S.. (2021). Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type. in Axioms
MDPI, Basel., 10(2).
https://doi.org/10.3390/axioms10020127

Mirkov N, Radenović S, Radojević S. Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type. in Axioms. 2021;10(2).
doi:10.3390/axioms10020127 .

Mirkov, Nikola, Radenović, Stojan, Radojević, Slobodan, "Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type" in Axioms, 10, no. 2 (2021),
https://doi.org/10.3390/axioms10020127 . .

TY  - JOUR
AU  - Savić, Ana
AU  - Fabiano, Nicola
AU  - Mirkov, Nikola
AU  - Sretenović, Aleksandra
AU  - Radenović, Stojan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3581
AB  - Using the approach of so-called c-sequences introduced by the fifth author in his recent work, we give much simpler and shorter proofs of multivalued Perov's type results with respect to the ones presented in the recently published paper by M. Abbas et al. Our proofs improve, complement, unify and enrich the ones from the recent papers. Further, in the last section of this paper, we correct and generalize the well-known Perov's fixed point result. We show that this result is in fact equivalent to Banach's contraction principle.
PB  - Amer Inst Mathematical Sciences-Aims, Springfield
T2  - AIMS Mathematics
T1  - Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph
EP  - 198
IS  - 1
SP  - 187
VL  - 7
DO  - 10.3934/math.2022011
ER  - 

@article{
author = "Savić, Ana and Fabiano, Nicola and Mirkov, Nikola and Sretenović, Aleksandra and Radenović, Stojan",
year = "2021",
abstract = "Using the approach of so-called c-sequences introduced by the fifth author in his recent work, we give much simpler and shorter proofs of multivalued Perov's type results with respect to the ones presented in the recently published paper by M. Abbas et al. Our proofs improve, complement, unify and enrich the ones from the recent papers. Further, in the last section of this paper, we correct and generalize the well-known Perov's fixed point result. We show that this result is in fact equivalent to Banach's contraction principle.",
publisher = "Amer Inst Mathematical Sciences-Aims, Springfield",
journal = "AIMS Mathematics",
title = "Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph",
pages = "198-187",
number = "1",
volume = "7",
doi = "10.3934/math.2022011"
}

Savić, A., Fabiano, N., Mirkov, N., Sretenović, A.,& Radenović, S.. (2021). Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph. in AIMS Mathematics
Amer Inst Mathematical Sciences-Aims, Springfield., 7(1), 187-198.
https://doi.org/10.3934/math.2022011

Savić A, Fabiano N, Mirkov N, Sretenović A, Radenović S. Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph. in AIMS Mathematics. 2021;7(1):187-198.
doi:10.3934/math.2022011 .

Savić, Ana, Fabiano, Nicola, Mirkov, Nikola, Sretenović, Aleksandra, Radenović, Stojan, "Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph" in AIMS Mathematics, 7, no. 1 (2021):187-198,
https://doi.org/10.3934/math.2022011 . .

TY  - JOUR
AU  - Jovanović, Tamara
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3480
AB  - The stable isomers of the higher fullerenes C-76-D-2 and C-84-D-2:22, as well as fullerenes C-60 and C-70 were isolated from carbon soot by the new and improved extraction and chromatographic methods and processes. Characterizations of the C-84-D-2:22 isomer in this study were performed by infrared and electronic absorption spectroscopy. All of the experimentally observed IR and UV/VIS bands were in excellent agreement with the semi-empirical, DFT and TB potential theoretical calculations for this molecule. The molar extinction coefficients and the integrated molar extinction coefficients of the observed larger number of completely separated infrared absorption maxima and shoulders of fullerene C-84-D-2:22, as well as of its main convoluted maxima, in different and new relevant entire integration ranges, including neighboring, and all surrounding absorption shoulders were determined and their relative intensities compared. In addition, the molar absorptivity of the electronic absorption bands of this carbon cluster was found. The new IR and UV/VIS spectroscopic parameters that are significant for the quantitative determination, identification and numerous possible applications of C-84-D-2:22 are obtained and their changes compared to C-76-D-2 observed. Isolated and characterized C-84-D-2:22, as well as other fullerenes from this research can be used in electronic, optical, chemical and biomedical devices, superconductors, semiconductors, batteries, catalysts, polymers, sensors, solar cells, nanophotonic lenses with better optical transmission, refraction and wettability, diagnostic and therapeutic pharmaceutical substances, such as those against diabetes, cancer, neurodegenerative disorders, free radical scavenging, radio nuclear, antibacterial and antiviral agents that can inhibit HIV 1, HSV, COVID-19, influenza, malaria and so forth.
PB  - MDPI, Basel
T2  - Crystals
T1  - Determination of New IR and UV/VIS Spectroscopic Parameters of the C-84-D-2:22 Isomer for Its Quantitative Assessment, Identification and Possible Applications
IS  - 7
VL  - 11
DO  - 10.3390/cryst11070757
ER  - 

@article{
author = "Jovanović, Tamara",
year = "2021",
abstract = "The stable isomers of the higher fullerenes C-76-D-2 and C-84-D-2:22, as well as fullerenes C-60 and C-70 were isolated from carbon soot by the new and improved extraction and chromatographic methods and processes. Characterizations of the C-84-D-2:22 isomer in this study were performed by infrared and electronic absorption spectroscopy. All of the experimentally observed IR and UV/VIS bands were in excellent agreement with the semi-empirical, DFT and TB potential theoretical calculations for this molecule. The molar extinction coefficients and the integrated molar extinction coefficients of the observed larger number of completely separated infrared absorption maxima and shoulders of fullerene C-84-D-2:22, as well as of its main convoluted maxima, in different and new relevant entire integration ranges, including neighboring, and all surrounding absorption shoulders were determined and their relative intensities compared. In addition, the molar absorptivity of the electronic absorption bands of this carbon cluster was found. The new IR and UV/VIS spectroscopic parameters that are significant for the quantitative determination, identification and numerous possible applications of C-84-D-2:22 are obtained and their changes compared to C-76-D-2 observed. Isolated and characterized C-84-D-2:22, as well as other fullerenes from this research can be used in electronic, optical, chemical and biomedical devices, superconductors, semiconductors, batteries, catalysts, polymers, sensors, solar cells, nanophotonic lenses with better optical transmission, refraction and wettability, diagnostic and therapeutic pharmaceutical substances, such as those against diabetes, cancer, neurodegenerative disorders, free radical scavenging, radio nuclear, antibacterial and antiviral agents that can inhibit HIV 1, HSV, COVID-19, influenza, malaria and so forth.",
publisher = "MDPI, Basel",
journal = "Crystals",
title = "Determination of New IR and UV/VIS Spectroscopic Parameters of the C-84-D-2:22 Isomer for Its Quantitative Assessment, Identification and Possible Applications",
number = "7",
volume = "11",
doi = "10.3390/cryst11070757"
}

Jovanović, T.. (2021). Determination of New IR and UV/VIS Spectroscopic Parameters of the C-84-D-2:22 Isomer for Its Quantitative Assessment, Identification and Possible Applications. in Crystals
MDPI, Basel., 11(7).
https://doi.org/10.3390/cryst11070757

Jovanović T. Determination of New IR and UV/VIS Spectroscopic Parameters of the C-84-D-2:22 Isomer for Its Quantitative Assessment, Identification and Possible Applications. in Crystals. 2021;11(7).
doi:10.3390/cryst11070757 .

Jovanović, Tamara, "Determination of New IR and UV/VIS Spectroscopic Parameters of the C-84-D-2:22 Isomer for Its Quantitative Assessment, Identification and Possible Applications" in Crystals, 11, no. 7 (2021),
https://doi.org/10.3390/cryst11070757 . .