TY  - JOUR
AU  - Spasojević Brkić, Vesna
AU  - Mihajlović, Ivan
AU  - Misita, Mirjana
AU  - Perišić, Martina
AU  - Janev, Nemanja
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7821
AB  - Mining equipment working time is critical for ensuring output and fulfilling mining project deadlines. In order to find trends and possible downtime minimization measures, this article analyses numerous types of excavators, dump trucks, loaders, backhoe loaders, bucket wheel excavators, and surface-top hammer drill rigs in Serbian mining sites. The study collects data on mechanical, electrical, technological, organizational, abuse and meteorological downtimes types with the aim to highlight efficient ways for minimizing non-operational periods, hence improving the overall productivity and safety of mining operations in the industry. Special emphasis is put on excavators whose role in the mining industry is pivotal, directly impacting project timelines and financial outcomes. The methodology includes analysing the duration and implications of different downtime categories. Collected data showed non-parametric features, according to the descriptive statistics. To compare the data, the non-parametric Mann-Whitney U-test is implemented. The results of the research showed that, in most cases, there is a difference in the duration of downtimes between different categories of excavators` downtimes. However, a comparison between excavator downtimes and other machinery downtimes has not shown any statistically significant differences. This analysis aims to contribute to the optimisation of mining equipment usage, offering valuable insights for mining industry stakeholders.
PB  - University of Novi Sad, Technical faculty “Mihajlo Pupin” in Zrenjanin
T2  - JOURNAL OF ENGINEERING MANAGEMENT AND COMPETITIVENESS (JEMC)
T1  - EXCAVATOR DOWNTIME’S DIFFERENCES BETWEEN TYPES AND COMPARISON WITH OTHER MINING EQUIPMENT
EP  - 60
IS  - 1
SP  - 50
VL  - 14
DO  - 10.5937/JEMC2401050S
ER  - 

@article{
author = "Spasojević Brkić, Vesna and Mihajlović, Ivan and Misita, Mirjana and Perišić, Martina and Janev, Nemanja",
year = "2024",
abstract = "Mining equipment working time is critical for ensuring output and fulfilling mining project deadlines. In order to find trends and possible downtime minimization measures, this article analyses numerous types of excavators, dump trucks, loaders, backhoe loaders, bucket wheel excavators, and surface-top hammer drill rigs in Serbian mining sites. The study collects data on mechanical, electrical, technological, organizational, abuse and meteorological downtimes types with the aim to highlight efficient ways for minimizing non-operational periods, hence improving the overall productivity and safety of mining operations in the industry. Special emphasis is put on excavators whose role in the mining industry is pivotal, directly impacting project timelines and financial outcomes. The methodology includes analysing the duration and implications of different downtime categories. Collected data showed non-parametric features, according to the descriptive statistics. To compare the data, the non-parametric Mann-Whitney U-test is implemented. The results of the research showed that, in most cases, there is a difference in the duration of downtimes between different categories of excavators` downtimes. However, a comparison between excavator downtimes and other machinery downtimes has not shown any statistically significant differences. This analysis aims to contribute to the optimisation of mining equipment usage, offering valuable insights for mining industry stakeholders.",
publisher = "University of Novi Sad, Technical faculty “Mihajlo Pupin” in Zrenjanin",
journal = "JOURNAL OF ENGINEERING MANAGEMENT AND COMPETITIVENESS (JEMC)",
title = "EXCAVATOR DOWNTIME’S DIFFERENCES BETWEEN TYPES AND COMPARISON WITH OTHER MINING EQUIPMENT",
pages = "60-50",
number = "1",
volume = "14",
doi = "10.5937/JEMC2401050S"
}

Spasojević Brkić, V., Mihajlović, I., Misita, M., Perišić, M.,& Janev, N.. (2024). EXCAVATOR DOWNTIME’S DIFFERENCES BETWEEN TYPES AND COMPARISON WITH OTHER MINING EQUIPMENT. in JOURNAL OF ENGINEERING MANAGEMENT AND COMPETITIVENESS (JEMC)
University of Novi Sad, Technical faculty “Mihajlo Pupin” in Zrenjanin., 14(1), 50-60.
https://doi.org/10.5937/JEMC2401050S

Spasojević Brkić V, Mihajlović I, Misita M, Perišić M, Janev N. EXCAVATOR DOWNTIME’S DIFFERENCES BETWEEN TYPES AND COMPARISON WITH OTHER MINING EQUIPMENT. in JOURNAL OF ENGINEERING MANAGEMENT AND COMPETITIVENESS (JEMC). 2024;14(1):50-60.
doi:10.5937/JEMC2401050S .

Spasojević Brkić, Vesna, Mihajlović, Ivan, Misita, Mirjana, Perišić, Martina, Janev, Nemanja, "EXCAVATOR DOWNTIME’S DIFFERENCES BETWEEN TYPES AND COMPARISON WITH OTHER MINING EQUIPMENT" in JOURNAL OF ENGINEERING MANAGEMENT AND COMPETITIVENESS (JEMC), 14, no. 1 (2024):50-60,
https://doi.org/10.5937/JEMC2401050S . .

TY  - CONF
AU  - Bugarić, Uglješa
AU  - Spasojević Brkić, Vesna
AU  - Petrović, Nikola
AU  - Janev, Nemanja
AU  - Perišić, Martina
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7812
AB  - The mining industry has been steadily expanding annually to keep up with the increasing demands. Consequently, used machinery needs to work efficiently, which indicates that unexpected downtimes should be at the minimum possible level. Proper identification and risk evaluation of the potential breakdown is the most important element for efficient equipment maintenance and breakdown prevention. This research has focused on its reliability function determination and analyzed the consequences of downtime and the cost of repairs over a period of one year. Delays on the observed mining machine were classified according to the type of downtime: mechanical, technological, power/electricity, and downtime due to external influences. Input elements for risk assessment were severity of consequence (S), probability of occurrence (O), and failure detectability (D). The method used in this paper is based on the cost of maintenance and the impact of bulldozer breakdowns on reliability in order to maintain profitability and, by reducing the number of unwanted events caused by sudden failure of parts, increase safety during operation. Results show that the monitored bulldozer belongs to the lowest defined risk class, so its use is economically justifiable.
PB  - Technical Faculty in Bor
C3  - IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor
T1  - A RISK EVALUATION OF BULLDOZER DOWNTIMES AND ITS ECONOMIC JUSTIFICATION IN OPEN-PIT MINES
EP  - 131
IS  - 1
SP  - 122
VL  - XX
DO  - 10.5937/IMCSM24012B
ER  - 

@conference{
author = "Bugarić, Uglješa and Spasojević Brkić, Vesna and Petrović, Nikola and Janev, Nemanja and Perišić, Martina",
year = "2024",
abstract = "The mining industry has been steadily expanding annually to keep up with the increasing demands. Consequently, used machinery needs to work efficiently, which indicates that unexpected downtimes should be at the minimum possible level. Proper identification and risk evaluation of the potential breakdown is the most important element for efficient equipment maintenance and breakdown prevention. This research has focused on its reliability function determination and analyzed the consequences of downtime and the cost of repairs over a period of one year. Delays on the observed mining machine were classified according to the type of downtime: mechanical, technological, power/electricity, and downtime due to external influences. Input elements for risk assessment were severity of consequence (S), probability of occurrence (O), and failure detectability (D). The method used in this paper is based on the cost of maintenance and the impact of bulldozer breakdowns on reliability in order to maintain profitability and, by reducing the number of unwanted events caused by sudden failure of parts, increase safety during operation. Results show that the monitored bulldozer belongs to the lowest defined risk class, so its use is economically justifiable.",
publisher = "Technical Faculty in Bor",
journal = "IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor",
title = "A RISK EVALUATION OF BULLDOZER DOWNTIMES AND ITS ECONOMIC JUSTIFICATION IN OPEN-PIT MINES",
pages = "131-122",
number = "1",
volume = "XX",
doi = "10.5937/IMCSM24012B"
}

Bugarić, U., Spasojević Brkić, V., Petrović, N., Janev, N.,& Perišić, M.. (2024). A RISK EVALUATION OF BULLDOZER DOWNTIMES AND ITS ECONOMIC JUSTIFICATION IN OPEN-PIT MINES. in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor
Technical Faculty in Bor., XX(1), 122-131.
https://doi.org/10.5937/IMCSM24012B

Bugarić U, Spasojević Brkić V, Petrović N, Janev N, Perišić M. A RISK EVALUATION OF BULLDOZER DOWNTIMES AND ITS ECONOMIC JUSTIFICATION IN OPEN-PIT MINES. in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor. 2024;XX(1):122-131.
doi:10.5937/IMCSM24012B .

Bugarić, Uglješa, Spasojević Brkić, Vesna, Petrović, Nikola, Janev, Nemanja, Perišić, Martina, "A RISK EVALUATION OF BULLDOZER DOWNTIMES AND ITS ECONOMIC JUSTIFICATION IN OPEN-PIT MINES" in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor, XX, no. 1 (2024):122-131,
https://doi.org/10.5937/IMCSM24012B . .

TY  - CONF
AU  - Spasojević Brkić, Vesna
AU  - Janev, Nemanja
AU  - Petrović, Nikola
AU  - Bugarić, Uglješa
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7809
AB  - Numerous authors have demonstrated the effectiveness of the risk-based approach in the mining sector. However, the majority of earlier research has ignored the role that auxiliary machines, in total risk management play in favor of heavy machinery. This study aims to analyze backhoe loader maintenance data in order to offer a risk assessment approach for auxiliary machinery in open-pit mines. The severity, occurrence, and detection of failures were the three component indicators that together determined the overall risk, as per the FMEA method. The purpose of the Pareto chart was to grade the detection indicator by illustrating the failure type distribution and distinction. The downtime data statistical testing results enabled analytical calculation of the system's reliability and mean downtime, which in turn allowed for the evaluation of the frequency and severity of failures. As a result, a framework for evaluation was put out, supported by data that was gathered, and included a three-dimensional risk assessment matrix. The focus of further research efforts should be on expanding the present sample data in sense of quantity and also to analysis of other machines in the whole mining system.
PB  - Technical Faculty in Bor
C3  - IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor
T1  - RELIABILITY-BASED RISK ASSESSMENT OF AUXILIARY MACHINERY IN OPEN-PIT MINES: A BACKHOE LOADER CASE STUDY
EP  - 78
IS  - 1
SP  - 69
VL  - XX
DO  - 10.5937/IMCSM24007S
ER  - 

@conference{
author = "Spasojević Brkić, Vesna and Janev, Nemanja and Petrović, Nikola and Bugarić, Uglješa",
year = "2024",
abstract = "Numerous authors have demonstrated the effectiveness of the risk-based approach in the mining sector. However, the majority of earlier research has ignored the role that auxiliary machines, in total risk management play in favor of heavy machinery. This study aims to analyze backhoe loader maintenance data in order to offer a risk assessment approach for auxiliary machinery in open-pit mines. The severity, occurrence, and detection of failures were the three component indicators that together determined the overall risk, as per the FMEA method. The purpose of the Pareto chart was to grade the detection indicator by illustrating the failure type distribution and distinction. The downtime data statistical testing results enabled analytical calculation of the system's reliability and mean downtime, which in turn allowed for the evaluation of the frequency and severity of failures. As a result, a framework for evaluation was put out, supported by data that was gathered, and included a three-dimensional risk assessment matrix. The focus of further research efforts should be on expanding the present sample data in sense of quantity and also to analysis of other machines in the whole mining system.",
publisher = "Technical Faculty in Bor",
journal = "IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor",
title = "RELIABILITY-BASED RISK ASSESSMENT OF AUXILIARY MACHINERY IN OPEN-PIT MINES: A BACKHOE LOADER CASE STUDY",
pages = "78-69",
number = "1",
volume = "XX",
doi = "10.5937/IMCSM24007S"
}

Spasojević Brkić, V., Janev, N., Petrović, N.,& Bugarić, U.. (2024). RELIABILITY-BASED RISK ASSESSMENT OF AUXILIARY MACHINERY IN OPEN-PIT MINES: A BACKHOE LOADER CASE STUDY. in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor
Technical Faculty in Bor., XX(1), 69-78.
https://doi.org/10.5937/IMCSM24007S

Spasojević Brkić V, Janev N, Petrović N, Bugarić U. RELIABILITY-BASED RISK ASSESSMENT OF AUXILIARY MACHINERY IN OPEN-PIT MINES: A BACKHOE LOADER CASE STUDY. in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor. 2024;XX(1):69-78.
doi:10.5937/IMCSM24007S .

Spasojević Brkić, Vesna, Janev, Nemanja, Petrović, Nikola, Bugarić, Uglješa, "RELIABILITY-BASED RISK ASSESSMENT OF AUXILIARY MACHINERY IN OPEN-PIT MINES: A BACKHOE LOADER CASE STUDY" in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor, XX, no. 1 (2024):69-78,
https://doi.org/10.5937/IMCSM24007S . .

TY  - CONF
AU  - Misita, Mirjana
AU  - Spasojević Brkić, Vesna
AU  - Mihajlović, Ivan
AU  - Brkić, Aleksandar
AU  - Perišić, Martina
AU  - Papić, Neda
AU  - Janev, Nemanja
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7810
AB  - The paper presents research into the possibility of applying machine learning algorithms in the prediction of stoppages and/or failure of excavator units. Regression trees, Random Forest and Support Vector Machine (SVM) algorithms were tested with different hyperparameter variations on the collected set of data on the causes and downtime of stoppages of the observed excavator units. The result indicates that the trained SVM algorithm with sufficient accuracy (MSE 0.106) can predict the stoppages of the observed excavator units. Further research is aimed at expanding the database and further improving the possibility of predicting the level of danger for various causes of stoppages and/or failure of the observed excavator units.
PB  - Technical Faculty in Bor
C3  - IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor
T1  - SELECTION OF AN ALGORITHM FOR THE PREDICTION OF STOPPAGES AND/OR FAILURE OF EXCAVATION UNITS USING SUPERVISED MACHINE LEARNING
EP  - 91
IS  - 1
SP  - 79
VL  - XX
DO  - 10.5937/IMCSM24008M
ER  - 

@conference{
author = "Misita, Mirjana and Spasojević Brkić, Vesna and Mihajlović, Ivan and Brkić, Aleksandar and Perišić, Martina and Papić, Neda and Janev, Nemanja",
year = "2024",
abstract = "The paper presents research into the possibility of applying machine learning algorithms in the prediction of stoppages and/or failure of excavator units. Regression trees, Random Forest and Support Vector Machine (SVM) algorithms were tested with different hyperparameter variations on the collected set of data on the causes and downtime of stoppages of the observed excavator units. The result indicates that the trained SVM algorithm with sufficient accuracy (MSE 0.106) can predict the stoppages of the observed excavator units. Further research is aimed at expanding the database and further improving the possibility of predicting the level of danger for various causes of stoppages and/or failure of the observed excavator units.",
publisher = "Technical Faculty in Bor",
journal = "IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor",
title = "SELECTION OF AN ALGORITHM FOR THE PREDICTION OF STOPPAGES AND/OR FAILURE OF EXCAVATION UNITS USING SUPERVISED MACHINE LEARNING",
pages = "91-79",
number = "1",
volume = "XX",
doi = "10.5937/IMCSM24008M"
}

Misita, M., Spasojević Brkić, V., Mihajlović, I., Brkić, A., Perišić, M., Papić, N.,& Janev, N.. (2024). SELECTION OF AN ALGORITHM FOR THE PREDICTION OF STOPPAGES AND/OR FAILURE OF EXCAVATION UNITS USING SUPERVISED MACHINE LEARNING. in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor
Technical Faculty in Bor., XX(1), 79-91.
https://doi.org/10.5937/IMCSM24008M

Misita M, Spasojević Brkić V, Mihajlović I, Brkić A, Perišić M, Papić N, Janev N. SELECTION OF AN ALGORITHM FOR THE PREDICTION OF STOPPAGES AND/OR FAILURE OF EXCAVATION UNITS USING SUPERVISED MACHINE LEARNING. in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor. 2024;XX(1):79-91.
doi:10.5937/IMCSM24008M .

Misita, Mirjana, Spasojević Brkić, Vesna, Mihajlović, Ivan, Brkić, Aleksandar, Perišić, Martina, Papić, Neda, Janev, Nemanja, "SELECTION OF AN ALGORITHM FOR THE PREDICTION OF STOPPAGES AND/OR FAILURE OF EXCAVATION UNITS USING SUPERVISED MACHINE LEARNING" in IMCSM Proceedings - International May Conference on Strategic Management – IMCSM24, May 31, 2024, Bor, XX, no. 1 (2024):79-91,
https://doi.org/10.5937/IMCSM24008M . .

TY  - JOUR
AU  - Spasojević Brkić, Vesna
AU  - Tomić, Branislav
AU  - Perišić, Martina
AU  - Janev, Nemanja
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7172
AB  - Previous research shows that Kaizen's benefits are multiple and evident,
but its practices in the supply chain have been sufficiently examined now.
Conversely, we are witnessing numerous issues in contemporary global
supply networks. In this survey, after conducting a literature review, three
research questions regarding Kaizen modes of usage were formulated and
tested on the sample of 195 enterprises that are part of the global supply
chain, located in 31 countries, and active in two different types of
industries – aircraft, and transportation. A combined approach containing
descriptive statistics, reliability, factor analysis, and statistical hypothesis
testing by Kruskal-Wallis one-way ANOVA and Mann-Whitney U tests
were used. Results show significant differences between Kaizen practices
applied in countries such as Italy, the United Kingdom, Canada, the USA,
Japan, and China, where national and corporate cultures differ. Kaizen
implementation significantly differs between companies operating in the
aircraft and transportation sectors, which is unsurprising since aircraft
industry has a higher formalization level. The goal to determine the
differences in Kaizen practices around the globe was fulfilled since
statistically significant differences indicate the importance of the
contextual factors and connect adverse and Kaizen events.
PB  - Faculty of Mechanical Engineering, Belgrade
T2  - FME Transactions
T1  - Differences in Kaizen Implementation between Countries and Industry Types in Multinational Supply Chain
EP  - 191
IS  - 2
SP  - 183
VL  - 51
DO  - 10.5937/fme2302183S
ER  - 

@article{
author = "Spasojević Brkić, Vesna and Tomić, Branislav and Perišić, Martina and Janev, Nemanja",
year = "2023",
abstract = "Previous research shows that Kaizen's benefits are multiple and evident,
but its practices in the supply chain have been sufficiently examined now.
Conversely, we are witnessing numerous issues in contemporary global
supply networks. In this survey, after conducting a literature review, three
research questions regarding Kaizen modes of usage were formulated and
tested on the sample of 195 enterprises that are part of the global supply
chain, located in 31 countries, and active in two different types of
industries – aircraft, and transportation. A combined approach containing
descriptive statistics, reliability, factor analysis, and statistical hypothesis
testing by Kruskal-Wallis one-way ANOVA and Mann-Whitney U tests
were used. Results show significant differences between Kaizen practices
applied in countries such as Italy, the United Kingdom, Canada, the USA,
Japan, and China, where national and corporate cultures differ. Kaizen
implementation significantly differs between companies operating in the
aircraft and transportation sectors, which is unsurprising since aircraft
industry has a higher formalization level. The goal to determine the
differences in Kaizen practices around the globe was fulfilled since
statistically significant differences indicate the importance of the
contextual factors and connect adverse and Kaizen events.",
publisher = "Faculty of Mechanical Engineering, Belgrade",
journal = "FME Transactions",
title = "Differences in Kaizen Implementation between Countries and Industry Types in Multinational Supply Chain",
pages = "191-183",
number = "2",
volume = "51",
doi = "10.5937/fme2302183S"
}

Spasojević Brkić, V., Tomić, B., Perišić, M.,& Janev, N.. (2023). Differences in Kaizen Implementation between Countries and Industry Types in Multinational Supply Chain. in FME Transactions
Faculty of Mechanical Engineering, Belgrade., 51(2), 183-191.
https://doi.org/10.5937/fme2302183S

Spasojević Brkić V, Tomić B, Perišić M, Janev N. Differences in Kaizen Implementation between Countries and Industry Types in Multinational Supply Chain. in FME Transactions. 2023;51(2):183-191.
doi:10.5937/fme2302183S .

Spasojević Brkić, Vesna, Tomić, Branislav, Perišić, Martina, Janev, Nemanja, "Differences in Kaizen Implementation between Countries and Industry Types in Multinational Supply Chain" in FME Transactions, 51, no. 2 (2023):183-191,
https://doi.org/10.5937/fme2302183S . .

TY  - CONF
AU  - Brkić, Aleksandar
AU  - Spasojević Brkić, Vesna
AU  - Misita, Mirjana
AU  - Papić, Neda
AU  - Perišić, Martina
AU  - Janev, Nemanja
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6951
AB  - Two-level risk mapping and assessment methodology was proposed with several criteria for risk prioritization (frequency of occurrence, downtime, level of danger, type of stoppage, cause of downtime, risk number). In a period of one year all stoppages, both planned and unplanned, were monitored and later on classified by type into: technological, mechanical, electrical, stoppages caused by the machine operator, external stoppages, which include stoppages of machine inactivity due to weather conditions and the like. The methodology proposed is oriented towards the calculation of risks to people, property, etc., which arise from various types of downtime. Then, based on the recording of data on stoppages of the observed machine, the structure of the share of individual stoppages was analyzed and appropriate measures to prevent
incidents/accidents were recommended. The main causes of stoppages are isolated based on the frequency of occurrence, the percentage of the downtime duration in the total time spent and the level of danger. The primary cause of stoppages according to the mentioned criteria is the rupture of the hose in the observed machine with percentage participation in the duration of mechanical stoppages of 25.17%, with a frequency of 25% and a degree of danger of 6, while repairing the rod clamp is the second causal factor singled out as important from the risk aspect. Thanks to this, it is possible to plan maintenance activities and manage risks in an adequate way. The proposal for further research is further performance prediction and the determination of optimum operating parameters for different working conditions.
PB  - Elsevier
C3  - Procedia Structural Integrity
T1  - Methodology for Analysing Risk Factor on Surface Top Hammer Drill Rig
EP  - 103
IS  - C
SP  - 96
VL  - 48
DO  - 10.1016/j.prostr.2023.07.115
ER  - 

@conference{
author = "Brkić, Aleksandar and Spasojević Brkić, Vesna and Misita, Mirjana and Papić, Neda and Perišić, Martina and Janev, Nemanja",
year = "2023",
abstract = "Two-level risk mapping and assessment methodology was proposed with several criteria for risk prioritization (frequency of occurrence, downtime, level of danger, type of stoppage, cause of downtime, risk number). In a period of one year all stoppages, both planned and unplanned, were monitored and later on classified by type into: technological, mechanical, electrical, stoppages caused by the machine operator, external stoppages, which include stoppages of machine inactivity due to weather conditions and the like. The methodology proposed is oriented towards the calculation of risks to people, property, etc., which arise from various types of downtime. Then, based on the recording of data on stoppages of the observed machine, the structure of the share of individual stoppages was analyzed and appropriate measures to prevent
incidents/accidents were recommended. The main causes of stoppages are isolated based on the frequency of occurrence, the percentage of the downtime duration in the total time spent and the level of danger. The primary cause of stoppages according to the mentioned criteria is the rupture of the hose in the observed machine with percentage participation in the duration of mechanical stoppages of 25.17%, with a frequency of 25% and a degree of danger of 6, while repairing the rod clamp is the second causal factor singled out as important from the risk aspect. Thanks to this, it is possible to plan maintenance activities and manage risks in an adequate way. The proposal for further research is further performance prediction and the determination of optimum operating parameters for different working conditions.",
publisher = "Elsevier",
journal = "Procedia Structural Integrity",
title = "Methodology for Analysing Risk Factor on Surface Top Hammer Drill Rig",
pages = "103-96",
number = "C",
volume = "48",
doi = "10.1016/j.prostr.2023.07.115"
}

Brkić, A., Spasojević Brkić, V., Misita, M., Papić, N., Perišić, M.,& Janev, N.. (2023). Methodology for Analysing Risk Factor on Surface Top Hammer Drill Rig. in Procedia Structural Integrity
Elsevier., 48(C), 96-103.
https://doi.org/10.1016/j.prostr.2023.07.115

Brkić A, Spasojević Brkić V, Misita M, Papić N, Perišić M, Janev N. Methodology for Analysing Risk Factor on Surface Top Hammer Drill Rig. in Procedia Structural Integrity. 2023;48(C):96-103.
doi:10.1016/j.prostr.2023.07.115 .

Brkić, Aleksandar, Spasojević Brkić, Vesna, Misita, Mirjana, Papić, Neda, Perišić, Martina, Janev, Nemanja, "Methodology for Analysing Risk Factor on Surface Top Hammer Drill Rig" in Procedia Structural Integrity, 48, no. C (2023):96-103,
https://doi.org/10.1016/j.prostr.2023.07.115 . .

TY  - CONF
AU  - Spasojević Brkić, Vesna
AU  - Brkić, Aleksandar
AU  - Perišić, Martina
AU  - Misita, Mirjana
AU  - Janev, Nemanja
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6864
AB  - Risk management of engineering systems is of vital importance, but very often there
is no enough data to quantitatively evaluate risk and accordingly create risk management
strategy. Proper maintenance of excavators and bulldozers maximizes fuel efficiency and
reduces operating costs, as well as reduces equipment failure and enhances safety. Accordingly,
previous research opens avenue to analyze these two machinery types when working in mining
industry. This paper aims to create statistical comparisons on data collected about excavators’
and bulldozers’ as technological failure/stoppage, electrical failure/stoppage, mechanical
failure/stoppage, misuse, organizational failure/stoppage and external cause of
failure/stoppage. After performing descriptive statistics, hypothesis testing has not found
significant differences between technological failures/stoppages of excavators vs. bulldozers,
mechanical failures/stoppages between already mentioned machines or theirs hazard degrees
or total downtimes. Further research focus should be directed to the sample enlargement and
further analysis, which is expected to prove preliminary results.
PB  - Bor : University of Belgrade, Technical Faculty, Department of Engineering Management
C3  - International May Conference on Strategic Management – IMCSM23 May, 2023, Bor, Serbia
T1  - EXCAVATOR’S AND BULLDOZER’S DOWNTIME COMPARISON AND RISK MANAGEMENT: PRELIMINARY STUDY
EP  - 308
IS  - 1
SP  - 301
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6864
ER  - 

@conference{
author = "Spasojević Brkić, Vesna and Brkić, Aleksandar and Perišić, Martina and Misita, Mirjana and Janev, Nemanja",
year = "2023",
abstract = "Risk management of engineering systems is of vital importance, but very often there
is no enough data to quantitatively evaluate risk and accordingly create risk management
strategy. Proper maintenance of excavators and bulldozers maximizes fuel efficiency and
reduces operating costs, as well as reduces equipment failure and enhances safety. Accordingly,
previous research opens avenue to analyze these two machinery types when working in mining
industry. This paper aims to create statistical comparisons on data collected about excavators’
and bulldozers’ as technological failure/stoppage, electrical failure/stoppage, mechanical
failure/stoppage, misuse, organizational failure/stoppage and external cause of
failure/stoppage. After performing descriptive statistics, hypothesis testing has not found
significant differences between technological failures/stoppages of excavators vs. bulldozers,
mechanical failures/stoppages between already mentioned machines or theirs hazard degrees
or total downtimes. Further research focus should be directed to the sample enlargement and
further analysis, which is expected to prove preliminary results.",
publisher = "Bor : University of Belgrade, Technical Faculty, Department of Engineering Management",
journal = "International May Conference on Strategic Management – IMCSM23 May, 2023, Bor, Serbia",
title = "EXCAVATOR’S AND BULLDOZER’S DOWNTIME COMPARISON AND RISK MANAGEMENT: PRELIMINARY STUDY",
pages = "308-301",
number = "1",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6864"
}

Spasojević Brkić, V., Brkić, A., Perišić, M., Misita, M.,& Janev, N.. (2023). EXCAVATOR’S AND BULLDOZER’S DOWNTIME COMPARISON AND RISK MANAGEMENT: PRELIMINARY STUDY. in International May Conference on Strategic Management – IMCSM23 May, 2023, Bor, Serbia
Bor : University of Belgrade, Technical Faculty, Department of Engineering Management., 19(1), 301-308.
https://hdl.handle.net/21.15107/rcub_machinery_6864

Spasojević Brkić V, Brkić A, Perišić M, Misita M, Janev N. EXCAVATOR’S AND BULLDOZER’S DOWNTIME COMPARISON AND RISK MANAGEMENT: PRELIMINARY STUDY. in International May Conference on Strategic Management – IMCSM23 May, 2023, Bor, Serbia. 2023;19(1):301-308.
https://hdl.handle.net/21.15107/rcub_machinery_6864 .

Spasojević Brkić, Vesna, Brkić, Aleksandar, Perišić, Martina, Misita, Mirjana, Janev, Nemanja, "EXCAVATOR’S AND BULLDOZER’S DOWNTIME COMPARISON AND RISK MANAGEMENT: PRELIMINARY STUDY" in International May Conference on Strategic Management – IMCSM23 May, 2023, Bor, Serbia, 19, no. 1 (2023):301-308,
https://hdl.handle.net/21.15107/rcub_machinery_6864 .

TY  - CONF
AU  - Janev, Nemanja
AU  - Spasojević Brkić, Vesna
AU  - Misita, Mirjana
AU  - Mihajlović, Ivan
AU  - Perišić, Martina
AU  - Papić, Neda
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7111
AB  - For the production planning process to be successful, an enterprise's internal business processes
must be effective and efficient, while the DMAIC cycle is important aspect of practice-based continuous
improvement. In accordance to those facts, this preliminary research includes the first part of the DMAIC
methodology - “define“ and “measure“ tools, applied to a case study in automotive industry, with the aim of
improving production planning processes. Analysis in “define“ phase starts with SIPOC, continues with
calculation of critical indicators in “measure“ phase and is followed by Pareto charts. Research shows that
the existing method of manual collection of production data is not precise enough, and during two months
observation period, between 14 and 52 percent of planned production time on 9 observed machines, passed
as unnoticed downtime. Further data analysis showed that this time is 1.5 to 9 times higher than the total
reported downtime on individual machines. Results show that the further development of data collection
tools is crucial, and the recommendation is to move in the direction of automation of that process in order
to make the most of available technical resources, in “improve“ phase and to “control“ it by statistical
comparison of previous and new state indicators
PB  - Industrial Innovation in Digital Age
C3  - Proceedings on 19th International Conference on Industrial Systems – IS’23
T1  - PRODUCTION PLANNING AND “DEFINE, MEASURE AND ANALYSIS“ TOOLS IN AUTOMOTIVE INDUSTRY AS PREREQUISITE OF AUTOMATION: A CASE STUDY
EP  - 395
SP  - 390
VL  - 19
DO  - 10.24867/IS-2023-T6.2-6_07541
ER  - 

@conference{
author = "Janev, Nemanja and Spasojević Brkić, Vesna and Misita, Mirjana and Mihajlović, Ivan and Perišić, Martina and Papić, Neda",
year = "2023",
abstract = "For the production planning process to be successful, an enterprise's internal business processes
must be effective and efficient, while the DMAIC cycle is important aspect of practice-based continuous
improvement. In accordance to those facts, this preliminary research includes the first part of the DMAIC
methodology - “define“ and “measure“ tools, applied to a case study in automotive industry, with the aim of
improving production planning processes. Analysis in “define“ phase starts with SIPOC, continues with
calculation of critical indicators in “measure“ phase and is followed by Pareto charts. Research shows that
the existing method of manual collection of production data is not precise enough, and during two months
observation period, between 14 and 52 percent of planned production time on 9 observed machines, passed
as unnoticed downtime. Further data analysis showed that this time is 1.5 to 9 times higher than the total
reported downtime on individual machines. Results show that the further development of data collection
tools is crucial, and the recommendation is to move in the direction of automation of that process in order
to make the most of available technical resources, in “improve“ phase and to “control“ it by statistical
comparison of previous and new state indicators",
publisher = "Industrial Innovation in Digital Age",
journal = "Proceedings on 19th International Conference on Industrial Systems – IS’23",
title = "PRODUCTION PLANNING AND “DEFINE, MEASURE AND ANALYSIS“ TOOLS IN AUTOMOTIVE INDUSTRY AS PREREQUISITE OF AUTOMATION: A CASE STUDY",
pages = "395-390",
volume = "19",
doi = "10.24867/IS-2023-T6.2-6_07541"
}

Janev, N., Spasojević Brkić, V., Misita, M., Mihajlović, I., Perišić, M.,& Papić, N.. (2023). PRODUCTION PLANNING AND “DEFINE, MEASURE AND ANALYSIS“ TOOLS IN AUTOMOTIVE INDUSTRY AS PREREQUISITE OF AUTOMATION: A CASE STUDY. in Proceedings on 19th International Conference on Industrial Systems – IS’23
Industrial Innovation in Digital Age., 19, 390-395.
https://doi.org/10.24867/IS-2023-T6.2-6_07541

Janev N, Spasojević Brkić V, Misita M, Mihajlović I, Perišić M, Papić N. PRODUCTION PLANNING AND “DEFINE, MEASURE AND ANALYSIS“ TOOLS IN AUTOMOTIVE INDUSTRY AS PREREQUISITE OF AUTOMATION: A CASE STUDY. in Proceedings on 19th International Conference on Industrial Systems – IS’23. 2023;19:390-395.
doi:10.24867/IS-2023-T6.2-6_07541 .

Janev, Nemanja, Spasojević Brkić, Vesna, Misita, Mirjana, Mihajlović, Ivan, Perišić, Martina, Papić, Neda, "PRODUCTION PLANNING AND “DEFINE, MEASURE AND ANALYSIS“ TOOLS IN AUTOMOTIVE INDUSTRY AS PREREQUISITE OF AUTOMATION: A CASE STUDY" in Proceedings on 19th International Conference on Industrial Systems – IS’23, 19 (2023):390-395,
https://doi.org/10.24867/IS-2023-T6.2-6_07541 . .

TY  - JOUR
AU  - Spasojević Brkić, Vesna
AU  - Mihajlović, Ivan
AU  - Perišić, Martina
AU  - Janev, Nemanja
AU  - Rakonjac, Ivan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6882
AB  - For mining processes to operate safely, information about safety is crucial. Numerous authors pay attention to fostering a good safety climate without paying attention to safety communication across organizational structure, which motivates this survey. Accordingly, this paper aims to check the hypothesis whether there is a difference between the attitudes of managers, operators, and auxiliary workers in the mining industry regarding safety communication, since differences on their attitudes about safety communication issues have potential to cause safety performance. A survey of 123 respondents working in different positions in Serbian mining companies, which have evaluated the importance of communication as well as the current state regarding the quality of communication in their organizations, was conducted. After evaluating the data and conducting descriptive statistics, followed by the Mann-Whitney test, it was determined that there are no statistically significant differences in the attitudes of managers, operators, and support staff toward safety communication. This indicates that issues with an organization's safety performance are not brought on by the differences on safety attitudes at different hierarchical levels. Proposal for the future research is to examine other possible causes, such as cognitive biases in risk perception, safety training and education and similar, and to use larger sample that may confirm our hypothesis.
PB  - Univerzitet u Novom Sadu - Tehnički fakultet Mihajlo Pupin, Zrenjanin
T2  - Journal of Engineering Management and Competitiveness (JEMC)
T1  - SAFETY COMMUNICATION IN MINING COMPANIES: DIFFERENCES ACROSS ORGANIZATIONAL STRUCTURE
EP  - 36
IS  - 1
SP  - 30
VL  - 13
DO  - 10.5937/JEMC2301030S
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6882
ER  - 

@article{
author = "Spasojević Brkić, Vesna and Mihajlović, Ivan and Perišić, Martina and Janev, Nemanja and Rakonjac, Ivan",
year = "2023",
abstract = "For mining processes to operate safely, information about safety is crucial. Numerous authors pay attention to fostering a good safety climate without paying attention to safety communication across organizational structure, which motivates this survey. Accordingly, this paper aims to check the hypothesis whether there is a difference between the attitudes of managers, operators, and auxiliary workers in the mining industry regarding safety communication, since differences on their attitudes about safety communication issues have potential to cause safety performance. A survey of 123 respondents working in different positions in Serbian mining companies, which have evaluated the importance of communication as well as the current state regarding the quality of communication in their organizations, was conducted. After evaluating the data and conducting descriptive statistics, followed by the Mann-Whitney test, it was determined that there are no statistically significant differences in the attitudes of managers, operators, and support staff toward safety communication. This indicates that issues with an organization's safety performance are not brought on by the differences on safety attitudes at different hierarchical levels. Proposal for the future research is to examine other possible causes, such as cognitive biases in risk perception, safety training and education and similar, and to use larger sample that may confirm our hypothesis.",
publisher = "Univerzitet u Novom Sadu - Tehnički fakultet Mihajlo Pupin, Zrenjanin",
journal = "Journal of Engineering Management and Competitiveness (JEMC)",
title = "SAFETY COMMUNICATION IN MINING COMPANIES: DIFFERENCES ACROSS ORGANIZATIONAL STRUCTURE",
pages = "36-30",
number = "1",
volume = "13",
doi = "10.5937/JEMC2301030S",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6882"
}

Spasojević Brkić, V., Mihajlović, I., Perišić, M., Janev, N.,& Rakonjac, I.. (2023). SAFETY COMMUNICATION IN MINING COMPANIES: DIFFERENCES ACROSS ORGANIZATIONAL STRUCTURE. in Journal of Engineering Management and Competitiveness (JEMC)
Univerzitet u Novom Sadu - Tehnički fakultet Mihajlo Pupin, Zrenjanin., 13(1), 30-36.
https://doi.org/10.5937/JEMC2301030S
https://hdl.handle.net/21.15107/rcub_machinery_6882

Spasojević Brkić V, Mihajlović I, Perišić M, Janev N, Rakonjac I. SAFETY COMMUNICATION IN MINING COMPANIES: DIFFERENCES ACROSS ORGANIZATIONAL STRUCTURE. in Journal of Engineering Management and Competitiveness (JEMC). 2023;13(1):30-36.
doi:10.5937/JEMC2301030S
https://hdl.handle.net/21.15107/rcub_machinery_6882 .

Spasojević Brkić, Vesna, Mihajlović, Ivan, Perišić, Martina, Janev, Nemanja, Rakonjac, Ivan, "SAFETY COMMUNICATION IN MINING COMPANIES: DIFFERENCES ACROSS ORGANIZATIONAL STRUCTURE" in Journal of Engineering Management and Competitiveness (JEMC), 13, no. 1 (2023):30-36,
https://doi.org/10.5937/JEMC2301030S .,
https://hdl.handle.net/21.15107/rcub_machinery_6882 .

TY  - JOUR
AU  - Janev, Nemanja
AU  - Spasojević Brkić, Vesna
AU  - Misita, Mirjana
AU  - Perišić, Martina
AU  - Papić, Neda
PY  - 2023
UR  - https://scindeks.ceon.rs/Article.aspx?artid=0040-21762305607J
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7112
AB  - The process of assembling micro components requires careful planning where precise and reliable data
collecting is necessary due to a short production cycle time. After determining the shortages of the
current data monitoring system, in this paper, by using the „Improve“ and „Control“ phases of DMAIC
cycle, the development and later testing of a new tool for automatic capture and analysis of data obtained
from the machine was done. SWOT analysis was used to establish the production site's and current
manufacturing execution system strengths and weaknesses, opportunities and threats, which were then
utilized to create the newly developed solution accurate and feasible. A tool calibration data was
obtained on 9 machines in automotive company's micro component assembly unit. To confirm the
accuracy of the data, a RunAtRate test was done on the machines, and by using hypothesis testing, the
initial reliability of the new solution was determined. Further testing and comparison revealed that the
newly proposed tool recorded 73-80% greater downtime and 40-50% more defective parts than the
previously installed system. Accordingly, the usefulness of the proposed Lean Six Sigma tool is
confirmed, and for periodic accuracy checks and further improve.ment, it is necessary to apply the PDCA
cycle.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - „Improve“ and „Control“ Tools in Assembly of Micro Components: A Case Study
EP  - 613
IS  - 5
SP  - 607
VL  - 78
DO  - 10.5937/tehnika2305607J
ER  - 

@article{
author = "Janev, Nemanja and Spasojević Brkić, Vesna and Misita, Mirjana and Perišić, Martina and Papić, Neda",
year = "2023",
abstract = "The process of assembling micro components requires careful planning where precise and reliable data
collecting is necessary due to a short production cycle time. After determining the shortages of the
current data monitoring system, in this paper, by using the „Improve“ and „Control“ phases of DMAIC
cycle, the development and later testing of a new tool for automatic capture and analysis of data obtained
from the machine was done. SWOT analysis was used to establish the production site's and current
manufacturing execution system strengths and weaknesses, opportunities and threats, which were then
utilized to create the newly developed solution accurate and feasible. A tool calibration data was
obtained on 9 machines in automotive company's micro component assembly unit. To confirm the
accuracy of the data, a RunAtRate test was done on the machines, and by using hypothesis testing, the
initial reliability of the new solution was determined. Further testing and comparison revealed that the
newly proposed tool recorded 73-80% greater downtime and 40-50% more defective parts than the
previously installed system. Accordingly, the usefulness of the proposed Lean Six Sigma tool is
confirmed, and for periodic accuracy checks and further improve.ment, it is necessary to apply the PDCA
cycle.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "„Improve“ and „Control“ Tools in Assembly of Micro Components: A Case Study",
pages = "613-607",
number = "5",
volume = "78",
doi = "10.5937/tehnika2305607J"
}

Janev, N., Spasojević Brkić, V., Misita, M., Perišić, M.,& Papić, N.. (2023). „Improve“ and „Control“ Tools in Assembly of Micro Components: A Case Study. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 78(5), 607-613.
https://doi.org/10.5937/tehnika2305607J

Janev N, Spasojević Brkić V, Misita M, Perišić M, Papić N. „Improve“ and „Control“ Tools in Assembly of Micro Components: A Case Study. in Tehnika. 2023;78(5):607-613.
doi:10.5937/tehnika2305607J .

Janev, Nemanja, Spasojević Brkić, Vesna, Misita, Mirjana, Perišić, Martina, Papić, Neda, "„Improve“ and „Control“ Tools in Assembly of Micro Components: A Case Study" in Tehnika, 78, no. 5 (2023):607-613,
https://doi.org/10.5937/tehnika2305607J . .

TY  - CONF
AU  - Janev, Nemanja
AU  - Perišić, Martina
AU  - Krantić, Milan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6958
AB  - In order to be competitive in the market, many companies must, besides product quality, constantly monitor the efficiency of their organization and its employees. Factor analysis can reduce the number of significant areas, by grouping some of them into influential contingent factors that help in monitoring of the situation. Also, for good and reliable planning, it is important to know how the areas are correlated with each other, to which correlation analysis contributes. This paper aims to analyze the data collected from the survey, conducted on a sample of 56 companies operating in Serbia, and to find influential factors. Descriptive statistics and data reliability were first performed and after that by factor analysis the data were divided into groups of influencing factors and then the correlation between the data was examined.  The obtained results indicate that it is possible to reduce 20 examined traits to 5 influential factors, and the correlation analysis shows the importance of  employee training on level of innovation in processes and products and faster and appropriate reaction to solving and preventive problems.
PB  - University of Belgrade Faculty of Mechanical Engineering
C3  - 8th International Conference on Industrial Engineering (SIE 2022), 29-30. September
T1  - Contigency of employees' training
EP  - 314
SP  - 311
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6958
ER  - 

@conference{
author = "Janev, Nemanja and Perišić, Martina and Krantić, Milan",
year = "2022",
abstract = "In order to be competitive in the market, many companies must, besides product quality, constantly monitor the efficiency of their organization and its employees. Factor analysis can reduce the number of significant areas, by grouping some of them into influential contingent factors that help in monitoring of the situation. Also, for good and reliable planning, it is important to know how the areas are correlated with each other, to which correlation analysis contributes. This paper aims to analyze the data collected from the survey, conducted on a sample of 56 companies operating in Serbia, and to find influential factors. Descriptive statistics and data reliability were first performed and after that by factor analysis the data were divided into groups of influencing factors and then the correlation between the data was examined.  The obtained results indicate that it is possible to reduce 20 examined traits to 5 influential factors, and the correlation analysis shows the importance of  employee training on level of innovation in processes and products and faster and appropriate reaction to solving and preventive problems.",
publisher = "University of Belgrade Faculty of Mechanical Engineering",
journal = "8th International Conference on Industrial Engineering (SIE 2022), 29-30. September",
title = "Contigency of employees' training",
pages = "314-311",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6958"
}

Janev, N., Perišić, M.,& Krantić, M.. (2022). Contigency of employees' training. in 8th International Conference on Industrial Engineering (SIE 2022), 29-30. September
University of Belgrade Faculty of Mechanical Engineering., 311-314.
https://hdl.handle.net/21.15107/rcub_machinery_6958

Janev N, Perišić M, Krantić M. Contigency of employees' training. in 8th International Conference on Industrial Engineering (SIE 2022), 29-30. September. 2022;:311-314.
https://hdl.handle.net/21.15107/rcub_machinery_6958 .

Janev, Nemanja, Perišić, Martina, Krantić, Milan, "Contigency of employees' training" in 8th International Conference on Industrial Engineering (SIE 2022), 29-30. September (2022):311-314,
https://hdl.handle.net/21.15107/rcub_machinery_6958 .

TY  - CONF
AU  - Perišić, Martina
AU  - Papić, Neda
AU  - Misita, Mirjana
AU  - Spasojević Brkić, Vesna
AU  - Janev, Nemanja
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4188
AB  - Mining is considered one of the most risky industrial operations. Development and application of risk assessment methods has the greatest impact on improvements in terms of safety in mining equipment. Risk is analyzed in many aspects i.e. human factor, environmental impact and operational aspects. Analyzing the mining machinery is a way to determine which ones have the greatest tendency to fail. The aim of this research is to compare data on failures obtained from 348 mining machines. All machines are arranged in 7 groups, namely 50 excavators, 50 bulldozers, 48 drills, 50 dumpers, 50 backhoe loaders, 50 bucket wheel excavators and 50 loaders. In order to compare the data, it is necessary to first determine the distribution under which the data belong. That is achieved by using Kolmogorov-Smirnov test. After that the Kruskal-Wallis test was used to determine whether there is a relationship between the machines, viewed from the aspects of failure duration and failure frequency.
PB  - Zrenjanin, Technical faculty “Mihajlo Pupin”
C3  - XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022)
T1  - Comparison of Failure Duration and Failure Frequency of Mining Machines Using The Kruskal-Wallis H Test (One-Way Anova On Ranks) - Preliminary Research
SP  - 93
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4188
ER  - 

@conference{
author = "Perišić, Martina and Papić, Neda and Misita, Mirjana and Spasojević Brkić, Vesna and Janev, Nemanja",
year = "2022",
abstract = "Mining is considered one of the most risky industrial operations. Development and application of risk assessment methods has the greatest impact on improvements in terms of safety in mining equipment. Risk is analyzed in many aspects i.e. human factor, environmental impact and operational aspects. Analyzing the mining machinery is a way to determine which ones have the greatest tendency to fail. The aim of this research is to compare data on failures obtained from 348 mining machines. All machines are arranged in 7 groups, namely 50 excavators, 50 bulldozers, 48 drills, 50 dumpers, 50 backhoe loaders, 50 bucket wheel excavators and 50 loaders. In order to compare the data, it is necessary to first determine the distribution under which the data belong. That is achieved by using Kolmogorov-Smirnov test. After that the Kruskal-Wallis test was used to determine whether there is a relationship between the machines, viewed from the aspects of failure duration and failure frequency.",
publisher = "Zrenjanin, Technical faculty “Mihajlo Pupin”",
journal = "XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022)",
title = "Comparison of Failure Duration and Failure Frequency of Mining Machines Using The Kruskal-Wallis H Test (One-Way Anova On Ranks) - Preliminary Research",
pages = "93",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4188"
}

Perišić, M., Papić, N., Misita, M., Spasojević Brkić, V.,& Janev, N.. (2022). Comparison of Failure Duration and Failure Frequency of Mining Machines Using The Kruskal-Wallis H Test (One-Way Anova On Ranks) - Preliminary Research. in XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022)
Zrenjanin, Technical faculty “Mihajlo Pupin”., 93.
https://hdl.handle.net/21.15107/rcub_machinery_4188

Perišić M, Papić N, Misita M, Spasojević Brkić V, Janev N. Comparison of Failure Duration and Failure Frequency of Mining Machines Using The Kruskal-Wallis H Test (One-Way Anova On Ranks) - Preliminary Research. in XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022). 2022;:93.
https://hdl.handle.net/21.15107/rcub_machinery_4188 .

Perišić, Martina, Papić, Neda, Misita, Mirjana, Spasojević Brkić, Vesna, Janev, Nemanja, "Comparison of Failure Duration and Failure Frequency of Mining Machines Using The Kruskal-Wallis H Test (One-Way Anova On Ranks) - Preliminary Research" in XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022) (2022):93,
https://hdl.handle.net/21.15107/rcub_machinery_4188 .

TY  - CONF
AU  - Spasojević Brkić, Vesna
AU  - Misita, Mirjana
AU  - Brkić, Aleksandar
AU  - Veljković, Zorica
AU  - Perišić, Martina
AU  - Papić, Neda
AU  - Janev, Nemanja
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4181
AB  - Nowadays, safety and sustainable business success cannot be viewed in isolation. Risk assessment is a
prerequisite for adequate planning of prevention of destruction of critical potentials, as well as preparation of a
strategy for response to failure in the context of prevention of consequences. An important part of all
construction equipment maintenance is proper record keeping, but it is not done often in practice although it is a
prerequisite of proper risk management. Proper maintenance of excavators maximizes fuel efficiency and
reduces operating costs as well as equipment failure. The aim of this paper is to present the missing facts, to
propose the methodology to be applied and show and analyze results obtained on excavator down time analysis
and risk management. This research analyzed the structure of downtime and consequences in excavator work in
six large Serbian companies during a period of one year. Delays in the observed transport and mining machines
were classified according to the type of downtime: technological downtime, power / electricity downtime,
mechanical downtime, misuse due to abuse, organizational downtime and downtime due to external influences.
In this research, the frequencies of downtime were monitored by the stated categories of downtime. The
consequences of the identified delays were then assessed, and the risk calculated.
PB  - Zrenjanin : Technical faculty “Mihajlo Pupin”
C3  - 12th International Symposium Engineering Management and Competitiveness 2022 (EMC 2022)
T1  - Risk Management and Excavator Downtime Analysis
SP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4181
ER  - 

@conference{
author = "Spasojević Brkić, Vesna and Misita, Mirjana and Brkić, Aleksandar and Veljković, Zorica and Perišić, Martina and Papić, Neda and Janev, Nemanja",
year = "2022",
abstract = "Nowadays, safety and sustainable business success cannot be viewed in isolation. Risk assessment is a
prerequisite for adequate planning of prevention of destruction of critical potentials, as well as preparation of a
strategy for response to failure in the context of prevention of consequences. An important part of all
construction equipment maintenance is proper record keeping, but it is not done often in practice although it is a
prerequisite of proper risk management. Proper maintenance of excavators maximizes fuel efficiency and
reduces operating costs as well as equipment failure. The aim of this paper is to present the missing facts, to
propose the methodology to be applied and show and analyze results obtained on excavator down time analysis
and risk management. This research analyzed the structure of downtime and consequences in excavator work in
six large Serbian companies during a period of one year. Delays in the observed transport and mining machines
were classified according to the type of downtime: technological downtime, power / electricity downtime,
mechanical downtime, misuse due to abuse, organizational downtime and downtime due to external influences.
In this research, the frequencies of downtime were monitored by the stated categories of downtime. The
consequences of the identified delays were then assessed, and the risk calculated.",
publisher = "Zrenjanin : Technical faculty “Mihajlo Pupin”",
journal = "12th International Symposium Engineering Management and Competitiveness 2022 (EMC 2022)",
title = "Risk Management and Excavator Downtime Analysis",
pages = "98",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4181"
}

Spasojević Brkić, V., Misita, M., Brkić, A., Veljković, Z., Perišić, M., Papić, N.,& Janev, N.. (2022). Risk Management and Excavator Downtime Analysis. in 12th International Symposium Engineering Management and Competitiveness 2022 (EMC 2022)
Zrenjanin : Technical faculty “Mihajlo Pupin”., 98.
https://hdl.handle.net/21.15107/rcub_machinery_4181

Spasojević Brkić V, Misita M, Brkić A, Veljković Z, Perišić M, Papić N, Janev N. Risk Management and Excavator Downtime Analysis. in 12th International Symposium Engineering Management and Competitiveness 2022 (EMC 2022). 2022;:98.
https://hdl.handle.net/21.15107/rcub_machinery_4181 .

Spasojević Brkić, Vesna, Misita, Mirjana, Brkić, Aleksandar, Veljković, Zorica, Perišić, Martina, Papić, Neda, Janev, Nemanja, "Risk Management and Excavator Downtime Analysis" in 12th International Symposium Engineering Management and Competitiveness 2022 (EMC 2022) (2022):98,
https://hdl.handle.net/21.15107/rcub_machinery_4181 .

TY  - CONF
AU  - Perišić, Martina
AU  - Papić, Neda
AU  - Misita, Mirjana
AU  - Spasojević Brkić, Vesna
AU  - Janev, Nemanja
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4118
AB  - Mining is considered one of the most risky industrial operations. Development and application of risk assessment methods has the greatest impact on improvements in terms of safety in mining equipment. Risk is analyzed in many aspects i.e. human factor, environmental impact and operational aspects. Analyzing the mining machinery is a way to determine which ones have the greatest tendency to fail. The aim of this research is to compare data on failures obtained from 348 mining machines. All machines are arranged in 7 groups, namely 50 excavators, 50 bulldozers, 48 drills, 50 dumpers, 50 backhoe loaders, 50 bucket wheel excavators and 50 loaders. In order to compare the data, it is necessary to first determine the distribution under which the data belong. That is achieved by using Kolmogorov-Smirnov test. After that the Kruskal-Wallis test was used to determine whether there is a relationship between the machines, viewed from the aspects of failure duration and failure frequency.
PB  - Technical Faculty “Mihajlo Pupin”, Zrenjanin, University of Novi Sad
C3  - XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022) October 06-07, 2022, Zrenjanin, Serbia
T1  - Comparison of failure duration and faailure frequency of mining machines using the Kruskal-Wallis H test (one-way ANOVA on ranks) - preliminary research
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4118
ER  - 

@conference{
author = "Perišić, Martina and Papić, Neda and Misita, Mirjana and Spasojević Brkić, Vesna and Janev, Nemanja",
year = "2022",
abstract = "Mining is considered one of the most risky industrial operations. Development and application of risk assessment methods has the greatest impact on improvements in terms of safety in mining equipment. Risk is analyzed in many aspects i.e. human factor, environmental impact and operational aspects. Analyzing the mining machinery is a way to determine which ones have the greatest tendency to fail. The aim of this research is to compare data on failures obtained from 348 mining machines. All machines are arranged in 7 groups, namely 50 excavators, 50 bulldozers, 48 drills, 50 dumpers, 50 backhoe loaders, 50 bucket wheel excavators and 50 loaders. In order to compare the data, it is necessary to first determine the distribution under which the data belong. That is achieved by using Kolmogorov-Smirnov test. After that the Kruskal-Wallis test was used to determine whether there is a relationship between the machines, viewed from the aspects of failure duration and failure frequency.",
publisher = "Technical Faculty “Mihajlo Pupin”, Zrenjanin, University of Novi Sad",
journal = "XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022) October 06-07, 2022, Zrenjanin, Serbia",
title = "Comparison of failure duration and faailure frequency of mining machines using the Kruskal-Wallis H test (one-way ANOVA on ranks) - preliminary research",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4118"
}

Perišić, M., Papić, N., Misita, M., Spasojević Brkić, V.,& Janev, N.. (2022). Comparison of failure duration and faailure frequency of mining machines using the Kruskal-Wallis H test (one-way ANOVA on ranks) - preliminary research. in XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022) October 06-07, 2022, Zrenjanin, Serbia
Technical Faculty “Mihajlo Pupin”, Zrenjanin, University of Novi Sad..
https://hdl.handle.net/21.15107/rcub_machinery_4118

Perišić M, Papić N, Misita M, Spasojević Brkić V, Janev N. Comparison of failure duration and faailure frequency of mining machines using the Kruskal-Wallis H test (one-way ANOVA on ranks) - preliminary research. in XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022) October 06-07, 2022, Zrenjanin, Serbia. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4118 .

Perišić, Martina, Papić, Neda, Misita, Mirjana, Spasojević Brkić, Vesna, Janev, Nemanja, "Comparison of failure duration and faailure frequency of mining machines using the Kruskal-Wallis H test (one-way ANOVA on ranks) - preliminary research" in XII International Conference Industrial Engineering and Environmental Protection 2022 (IIZS 2022) October 06-07, 2022, Zrenjanin, Serbia (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4118 .