This manuscript is presenting the preliminary results of research of the factors which are influe... more This manuscript is presenting the preliminary results of research of the factors which are influencing the failure of SMEs. The manuscript is just the starting base for the larger research that will address the analysis of the most important factors that lead to closure of SMEs in different regions of the Europe. Basic factors of interest, which can be segmented as the individual characteristics of the entrepreneur or non-individual characteristics of the SMEs, based on wide literature review, were used to define the measuring scale for assessment of the most important factors which can lead to failure of SMEs, in previous research [1]. Such defined initial questionnaire form was used, in a pilot test research, to assess the opinion of the real entrepreneurs who suffered the failure of their previous businesses in Serbia. The idea of the research is to develop adequate measuring scale, which will be used to measure the potential failure of the existing SMEs, based on the rates devel...
Sustainability became the most important component of world development, as countries worldwide f... more Sustainability became the most important component of world development, as countries worldwide fight the battle against the climate change. To understand the effects of climate change, the ecological footprint, along with the biocapacity should be observed. The big part of the ecological footprint, the carbon footprint, is most directly associated with the energy, and specifically fuel sources. This paper develops a time series vector autoregression prediction model of the ecological footprint based on energy parameters. The objective of the paper is to forecast the EF based solely on energy parameters and determine the relationship between the energy and the EF. The dataset included global yearly observations of the variables for the period 1971-2014. Predictions were generated for every variable that was used in the model for the period 2015-2024. The results indicate that the ecological footprint of consumption will continue increasing, as well as the primary energy consumption ...
This paper presents developing of the curriculum for the engineering management study module, in ... more This paper presents developing of the curriculum for the engineering management study module, in the transition environment. The study module was realized during past six years at the Technical faculty in Bor, which is the part of the University in Belgrade (Serbia) and authors of this text believe that it is the right time to perform a critical evaluation and comparasion with foreign practice of management studies in the USA and EU academic environment. Considering the worlds best practice in this field of education, characteristics of the transition economy surroundings and the available resources of our school, where this program is realized, MSc, BSc and PhD level curriculum can be defined including the courses model based on the graduated students competences.
In the literature, considerable attention has been given to the role of suppliers, thus companies... more In the literature, considerable attention has been given to the role of suppliers, thus companies have been increasingly considering better supplier selection approaches in order to attain the competitive advantage in the demanding markets. The aim of this study is to provide an effective tool for decision makers (DMs) to help them with evaluation and prioritization of current suppliers. Moreover, the supplier prioritization is inherently multi- criteria decision-making problem (MCDM), with involved high degree of fuzziness. Hence, this paper introduces fuzzy decision-making model where dependability assessment of the suppliers could be done based on the fuzzy set theory and max-min composition. Furthermore, in order to determine supplier dependability, the typical influence indicators: Production facilities and capacities (PFC), Delivery (D) and Service (S), were analysed in an illustrative example, where proposed model used triangular fuzzy numbers (TFN) to establish linguistic de...
Business conditions under transitional economy are specific since business operations should be p... more Business conditions under transitional economy are specific since business operations should be performed under significant uncertainty and with limited resources (human, financial, technological resources, etc.). Key factor, needed for overcoming those obstacles, improving companies' performances, and introducing company to the global market are human resources (HR). Motivation of employees is usually one of the major problems occurring while developing human resources. Investigation presented in this paper, which was conducted in small enterprises (less then 100 employees) situated in Southeast Europe, revealed that there are two strongest motivation factors for overall employees' satisfaction with their company. Those motivation factors, which have potential for securing and improving employees' position in the firm, are education and performance evaluation system within the company.
Journal of Mining and Metallurgy, Section B: Metallurgy, 2010
This paper presents the results of defining the mathematical model which describes the dependence... more This paper presents the results of defining the mathematical model which describes the dependence of leaching degree of Al2O3 in bauxite from the most influential input parameters in industrial conditions of conducting the leaching process in the Bayer technology of alumina production. Mathematical model is defined using the stepwise MLRA method, with R2 = 0.764 and significant statistical reliability - VIF<2 and p<0.05, on the one-year statistical sample. Validation of the acquired model was performed using the data from the following year, collected from the process conducted under industrial conditions, rendering the same statistical reliability, with R2 = 0.759.
This paper is dealing with review of different modeling approaches, available in contemporary lit... more This paper is dealing with review of different modeling approaches, available in contemporary literature, and analyses of their applicability on real technological processes. During the theoretical discussion the scope of potential options of techniques available for complex systems modeling are presented. Both analytical and statistical modeling approaches are described. The most important part of the paper is dealing with development of the algorithm for selection of appropriate numerical modeling approach-ASANMA, based on the structure of the system and the scope of input variables of the investigated process. Presented assumptions are based on real-life examples of the numerical models of the real systems. Developed algorithm can be used by decision makers for selection of the appropriate numerical modeling approach, in the practice.
Corporate social responsibility (CSR) has become a vital element for building a long-term relatio... more Corporate social responsibility (CSR) has become a vital element for building a long-term relationship with a company’s stakeholders. Different dimensions of a company’s social initiatives in terms of internal and external CSR activities influence the satisfaction of employees with the purpose of improving the CSR application. The aim of this research is to examine the level of employees’ awareness of the implementation of CSR in Serbian and Russian companies. A comparative analysis between these two countries was carried out in order to perceive the differences in attitudes of employees, their job satisfaction, and consequently the implementation of CSR. The hypotheses of the developed model were tested by using the Multi-group Confirmatory Factor Analysis. The obtained results offered several implications for scholars and practitioners that should be considered when formulating and implementing CSR actions.
Journal of The South African Institute of Mining and Metallurgy, 2011
Arsenic is present in the Earth’s crust in concentrations of 4.8 ± 0.5 μg/g in the natural form1.... more Arsenic is present in the Earth’s crust in concentrations of 4.8 ± 0.5 μg/g in the natural form1. The sources of arsenic in industrial areas are natural and anthropogenic2 and it can be found in soil, water, and atmospheric dust3. Among the biggest anthropogenic sources of arsenic are copper smelter plants, which are considered to be major environmental polluters the world over: particularly in Chile, the USA, Sweden, Spain, Russia, Australia, and Serbia4–9. The technology of copper production at the Bor smelter plant is half a century old. This technology uses the classical process of oxidation roasting, followed by melting in the reverberatory furnace and subsequent converting, with the use of SO2 process gas for sulfuric acid production (Figure 1). Most of the world’s copper smelter plants have replaced this kind of technology with modern processes such are the Outokumpu flash furnace, Mitsubishi smelting process, Noranda reactor, Peirce–Smith converting, El Teniente converter an...
This paper presents the results of the tropospheric ozone concentration modeling as the dependenc... more This paper presents the results of the tropospheric ozone concentration modeling as the dependence on volatile organic compounds - VOCs (Benzene, Toluene, m,p-Xylene, o-Xylene, Ethylbenzene); nonorganic compounds - NOx (NO, NO2, NOx, CO, H2S, SO2 and PM10) in the ambient air in parallel with the meteorological parameters: temperature, solar radiation, relative humidity, wind speed and direction. Modeling is based on measured results obtained during the year 2009. The measurements were performed at the measuring station located within an agricultural area, in vicinity of city of Zrenjanin (Serbian Banat, Serbia). Statistical analysis of obtained data, based on bivariate correlation analysis indicated that accurate modeling cannot be performed using linear statistics approach. Also, considering that almost all input variables have wide range of relative change (ratio of variance compared to range), nonlinear statistic analysis method based on only one rule describing the behavior of i...
This paper presents the comparison of Multiple Linear Regression Analysis (MLRA) and Artificial N... more This paper presents the comparison of Multiple Linear Regression Analysis (MLRA) and Artificial Neural Networks (ANN) as the statistical analysis tools. Most influential statistical parameters for choosing right modeling tool are evaluated in this investigation. Investigation was performed on real statistical data set obtained after measurements of the process parameters underindustrial conditions.
In recent years, contemporary projects, as well as companies that implement them, have faced incr... more In recent years, contemporary projects, as well as companies that implement them, have faced increasingly complex challenges, both technical and socio-economic. The reasons lie in the very dynamic changes that occur in the environment, and on the other hand, in the time-consuming process of realization and complexity of projects, difficulties in their realization, and a high level of uncertainty (Puska et al., 2018; Li et al., 2019). In such circumstances, from a contractor's point of view, goals such as time, cost, quality, performance and employee safety, need to be achieved. However, in practice, employee safety very often remains a marginalized area of business. In addition, involvement of numerous entities in the implementation of projects using complex techniques and technologies contributes to a high degree of safety risks as well as to a frequent occurrence of injuries at work. Therefore, the need for better employee safety performance Research Question: The aim of this ...
This manuscript is presenting the preliminary results of research of the factors which are influe... more This manuscript is presenting the preliminary results of research of the factors which are influencing the failure of SMEs. The manuscript is just the starting base for the larger research that will address the analysis of the most important factors that lead to closure of SMEs in different regions of the Europe. Basic factors of interest, which can be segmented as the individual characteristics of the entrepreneur or non-individual characteristics of the SMEs, based on wide literature review, were used to define the measuring scale for assessment of the most important factors which can lead to failure of SMEs, in previous research [1]. Such defined initial questionnaire form was used, in a pilot test research, to assess the opinion of the real entrepreneurs who suffered the failure of their previous businesses in Serbia. The idea of the research is to develop adequate measuring scale, which will be used to measure the potential failure of the existing SMEs, based on the rates devel...
Sustainability became the most important component of world development, as countries worldwide f... more Sustainability became the most important component of world development, as countries worldwide fight the battle against the climate change. To understand the effects of climate change, the ecological footprint, along with the biocapacity should be observed. The big part of the ecological footprint, the carbon footprint, is most directly associated with the energy, and specifically fuel sources. This paper develops a time series vector autoregression prediction model of the ecological footprint based on energy parameters. The objective of the paper is to forecast the EF based solely on energy parameters and determine the relationship between the energy and the EF. The dataset included global yearly observations of the variables for the period 1971-2014. Predictions were generated for every variable that was used in the model for the period 2015-2024. The results indicate that the ecological footprint of consumption will continue increasing, as well as the primary energy consumption ...
This paper presents developing of the curriculum for the engineering management study module, in ... more This paper presents developing of the curriculum for the engineering management study module, in the transition environment. The study module was realized during past six years at the Technical faculty in Bor, which is the part of the University in Belgrade (Serbia) and authors of this text believe that it is the right time to perform a critical evaluation and comparasion with foreign practice of management studies in the USA and EU academic environment. Considering the worlds best practice in this field of education, characteristics of the transition economy surroundings and the available resources of our school, where this program is realized, MSc, BSc and PhD level curriculum can be defined including the courses model based on the graduated students competences.
In the literature, considerable attention has been given to the role of suppliers, thus companies... more In the literature, considerable attention has been given to the role of suppliers, thus companies have been increasingly considering better supplier selection approaches in order to attain the competitive advantage in the demanding markets. The aim of this study is to provide an effective tool for decision makers (DMs) to help them with evaluation and prioritization of current suppliers. Moreover, the supplier prioritization is inherently multi- criteria decision-making problem (MCDM), with involved high degree of fuzziness. Hence, this paper introduces fuzzy decision-making model where dependability assessment of the suppliers could be done based on the fuzzy set theory and max-min composition. Furthermore, in order to determine supplier dependability, the typical influence indicators: Production facilities and capacities (PFC), Delivery (D) and Service (S), were analysed in an illustrative example, where proposed model used triangular fuzzy numbers (TFN) to establish linguistic de...
Business conditions under transitional economy are specific since business operations should be p... more Business conditions under transitional economy are specific since business operations should be performed under significant uncertainty and with limited resources (human, financial, technological resources, etc.). Key factor, needed for overcoming those obstacles, improving companies' performances, and introducing company to the global market are human resources (HR). Motivation of employees is usually one of the major problems occurring while developing human resources. Investigation presented in this paper, which was conducted in small enterprises (less then 100 employees) situated in Southeast Europe, revealed that there are two strongest motivation factors for overall employees' satisfaction with their company. Those motivation factors, which have potential for securing and improving employees' position in the firm, are education and performance evaluation system within the company.
Journal of Mining and Metallurgy, Section B: Metallurgy, 2010
This paper presents the results of defining the mathematical model which describes the dependence... more This paper presents the results of defining the mathematical model which describes the dependence of leaching degree of Al2O3 in bauxite from the most influential input parameters in industrial conditions of conducting the leaching process in the Bayer technology of alumina production. Mathematical model is defined using the stepwise MLRA method, with R2 = 0.764 and significant statistical reliability - VIF<2 and p<0.05, on the one-year statistical sample. Validation of the acquired model was performed using the data from the following year, collected from the process conducted under industrial conditions, rendering the same statistical reliability, with R2 = 0.759.
This paper is dealing with review of different modeling approaches, available in contemporary lit... more This paper is dealing with review of different modeling approaches, available in contemporary literature, and analyses of their applicability on real technological processes. During the theoretical discussion the scope of potential options of techniques available for complex systems modeling are presented. Both analytical and statistical modeling approaches are described. The most important part of the paper is dealing with development of the algorithm for selection of appropriate numerical modeling approach-ASANMA, based on the structure of the system and the scope of input variables of the investigated process. Presented assumptions are based on real-life examples of the numerical models of the real systems. Developed algorithm can be used by decision makers for selection of the appropriate numerical modeling approach, in the practice.
Corporate social responsibility (CSR) has become a vital element for building a long-term relatio... more Corporate social responsibility (CSR) has become a vital element for building a long-term relationship with a company’s stakeholders. Different dimensions of a company’s social initiatives in terms of internal and external CSR activities influence the satisfaction of employees with the purpose of improving the CSR application. The aim of this research is to examine the level of employees’ awareness of the implementation of CSR in Serbian and Russian companies. A comparative analysis between these two countries was carried out in order to perceive the differences in attitudes of employees, their job satisfaction, and consequently the implementation of CSR. The hypotheses of the developed model were tested by using the Multi-group Confirmatory Factor Analysis. The obtained results offered several implications for scholars and practitioners that should be considered when formulating and implementing CSR actions.
Journal of The South African Institute of Mining and Metallurgy, 2011
Arsenic is present in the Earth’s crust in concentrations of 4.8 ± 0.5 μg/g in the natural form1.... more Arsenic is present in the Earth’s crust in concentrations of 4.8 ± 0.5 μg/g in the natural form1. The sources of arsenic in industrial areas are natural and anthropogenic2 and it can be found in soil, water, and atmospheric dust3. Among the biggest anthropogenic sources of arsenic are copper smelter plants, which are considered to be major environmental polluters the world over: particularly in Chile, the USA, Sweden, Spain, Russia, Australia, and Serbia4–9. The technology of copper production at the Bor smelter plant is half a century old. This technology uses the classical process of oxidation roasting, followed by melting in the reverberatory furnace and subsequent converting, with the use of SO2 process gas for sulfuric acid production (Figure 1). Most of the world’s copper smelter plants have replaced this kind of technology with modern processes such are the Outokumpu flash furnace, Mitsubishi smelting process, Noranda reactor, Peirce–Smith converting, El Teniente converter an...
This paper presents the results of the tropospheric ozone concentration modeling as the dependenc... more This paper presents the results of the tropospheric ozone concentration modeling as the dependence on volatile organic compounds - VOCs (Benzene, Toluene, m,p-Xylene, o-Xylene, Ethylbenzene); nonorganic compounds - NOx (NO, NO2, NOx, CO, H2S, SO2 and PM10) in the ambient air in parallel with the meteorological parameters: temperature, solar radiation, relative humidity, wind speed and direction. Modeling is based on measured results obtained during the year 2009. The measurements were performed at the measuring station located within an agricultural area, in vicinity of city of Zrenjanin (Serbian Banat, Serbia). Statistical analysis of obtained data, based on bivariate correlation analysis indicated that accurate modeling cannot be performed using linear statistics approach. Also, considering that almost all input variables have wide range of relative change (ratio of variance compared to range), nonlinear statistic analysis method based on only one rule describing the behavior of i...
This paper presents the comparison of Multiple Linear Regression Analysis (MLRA) and Artificial N... more This paper presents the comparison of Multiple Linear Regression Analysis (MLRA) and Artificial Neural Networks (ANN) as the statistical analysis tools. Most influential statistical parameters for choosing right modeling tool are evaluated in this investigation. Investigation was performed on real statistical data set obtained after measurements of the process parameters underindustrial conditions.
In recent years, contemporary projects, as well as companies that implement them, have faced incr... more In recent years, contemporary projects, as well as companies that implement them, have faced increasingly complex challenges, both technical and socio-economic. The reasons lie in the very dynamic changes that occur in the environment, and on the other hand, in the time-consuming process of realization and complexity of projects, difficulties in their realization, and a high level of uncertainty (Puska et al., 2018; Li et al., 2019). In such circumstances, from a contractor's point of view, goals such as time, cost, quality, performance and employee safety, need to be achieved. However, in practice, employee safety very often remains a marginalized area of business. In addition, involvement of numerous entities in the implementation of projects using complex techniques and technologies contributes to a high degree of safety risks as well as to a frequent occurrence of injuries at work. Therefore, the need for better employee safety performance Research Question: The aim of this ...
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