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Volume 8, Number 2
PROJECT RISK MANAGEMENT IN IRANIAN SOFTWARE PROJECTS
Ali Reza AFSHARI, Vladimir BRTKA, Melita ĆOĆKALO-HRONJEC
Abstract:Many Software development organizations suffer chronic problems of cost overruns, schedule slips and projects that do not meet the originally specified functions in almost all software projects. This study is commenced by reviewing existing risk management models. Thereafter, a survey that involved software project managers in Iran was conducted to gather empirical data about the practice of risk assessment. Thirty Software Project managers participated and were interviewed. Structured questionnaires were used to capture information. Observation made from the study show that in Iran, risk assessment is poorly practiced and many projects do not yet practice systematic risk assessment. This is because 83% of software project managers implicitly assess risks and the same percentage (83%) of them uses unstructured approaches, poor risk identification and analysis techniques. It additionally shows that risks are not documented and experiences not properly utilized. This has led to recurring problems. The conclusion drawn indicates that Iran’s software project managers need to start assessing risks using proper approaches. Review of existing models showed that these models are complex and may not help address the existing shortcomings. This study proposes a risk assessment framework, which helps managers to simply start assessing, documenting major risks, estimating risks using an objective approach that is based on frequently occurring risks to project likelihood of a risk occurring and subjective approach where objective approach is not applicable. It also supports qualitative risk estimation technique using prearranged risk estimation matrices and is supported by a tool that collects and stores risk data for analysis and improvement purposes. Keywords: Project management, Software projects, Software project risk, Risk assessment, Project risk management
LEAN STARTUPS WITH INDUSTRY 4.0 TECHNOLOGIES: OVERCOMING THE CHALLENGES OF YOUTH ENTREPRENEURSHIP IN SERBIA
Mihalj BAKATOR, Dejan ĐORĐEVIĆ, Dragan ĆOĆKALO, Milan NIKOLIĆ, Miloš VORKAPIĆ
Abstract: Youth entrepreneurship is important for reducing youth unemployment rates and it overall contributes to economic growth. The main idea of this research is to determine the barriers and challenges that young entrepreneurs face in Serbia. The paper analyzes literature in this domain, and compares the status of youth entrepreneurship and entrepreneurship overall between Serbia, the EU and the US. Furthermore, a theoretical model is developed that includes the application of Industry 4.0 (I4.0) technologies and lean startup approach. The results indicate that taxation regulation and the lack of financial support for new startups are the main barriers that the young face in Serbia. In addition, the lack of adequate entrepreneurial education creates difficulties, and demotivates potential entrepreneurs. Therefore, it is necessary to introduce or modify existing regulatory laws and introduce effective financial support for new enterprises. Keywords: Youth entrepreneurship, Industry 4.0, Lean startups, Serbia.
CREATING THE MODEL FOR THE IMPLEMENTATION OF MARKETING ATTRIBUTES WHICH DETERMINE DOMESTIC ENTERPRISES COMPETITIVENESS
Snežana BEŠIĆ, Cariša BEŠIĆ
Abstract: Global market and establishing new competitive relations require a new approach to business organization management, both in the conceptional and organizational sense. Modern organizations that are actively and continually applying modern management methods and techniques have significantly better chances to strenghten their competitive ability on the global market and to take a stable market position with the perspective for further market growth. Therefore, it is necessary for domestic enterprises to implement those management techniques which emphasize long-lasting orientation towards competitiveness – relationship marketing, business quality standardization, as well as other management techniques based on knowledge. Implementation of modern management techniques is an essential precondition for a successful business performance of domestic enterprises. Misunderstanding of marketing is typical for transition economies. Domestic business organizations have to use foreign business experiences in the process of business internationalization, which means that they have to apply actively the concept of integrated marketing. This paper provides an overview of reserch results regarding the managers' attitudes of domestic companies about the need of improving the marketing practice. Also, the overview of the model for applying the marketing attributes which determine the competitiveness of domestic companies has been provided. Keywords: Marketing, Competitiveness, Global market, Management, Knowledge, Model.
USABILITY OF OPEN-SOURCE HARDWARE BASED PLATFORM FOR INDOOR POSITIONING SYSTEMS
Dalibor DOBRILOVIĆ, Dejan PETROVIĆ, Milan MALIĆ
Abstract: The application of indoor location systems (also known as indoor positioning systems, IPS) has significantly increased in the past decade. Those systems find their role in the broad range of possible implementations, especially in the applications in the area of resource management and location tracking. Their applications can be in safety management, material, construction, and inventory management. Since, those systems are designed for indoor and closed areas where GPS, GLONASS, and other navigation systems are not applicable, a different approach should be used to determine the location. This paper presents a brief overview of indoor localization technologies and methods. The focus of this paper is on RSSI based methods for positioning. The contribution of this paper is in analyses of usability of platforms built on Arduino/Genuino development boards and similar devices and open-source hardware for usage in RSSI based indoor positioning systems. The presented platform is designed and evaluated with the two experiments, with two different technologies. Keywords: Open-source hardware, Indoor positioning systems, RSSI, Resource management, Location tracking.
DETERMINATION OF PERSONALITY TRAITS AND CHARACTER OF LEADERS, THEIR SELECTION AND EFFICIENCY IN THE TEXTILE INDUSTRY
Jesa KREINER, Dragana SAJFERT, Edit TEREK, Nikola PETROVIĆ
Abstract: The approach to management as a set of specificity means is that organizations will work better if people in leadership positions have certain traits. Practical but essential task of leaders is to create new approaches and find new areas to explore. The hypothesis underlying this procedure is that the personality traits of leaders have a major impact on increasing their effectiveness and efficiency in the textile industry in Serbia. In the study, the results were given for the age structure, professional structure of the leaders, social origin of the leader, the leader position in society, the success of the work of managers, the importance of some roles of managers. Knowledge and skills are acquired and developed through theory and practical experience, while some specific skills are a starting feature that an individual has or does not have. A leader is a profession that requires a person to possess certain character traits to be successful, in order to successfully carry out the tasks. Keywords: Personality traits, Selection, Efficiency, Leader, Manufacturing.
USING TAGUCHI'S CONTRIBUTION RATIO AND PARETO DIAGRAM IN IDENTIFICATION OF INFLUENTIAL FACTORS IN EXPERIMENTS: CASE STUDIES
Zorica A. VELJKOVIĆ, Vesna K. SPASOJEVIĆ BRKIĆ, Damir ĆURIĆ, Slobodan LJ. RADOJEVIĆ
Abstract: This paper considers the usage of Taguchi's contribution ratio as well as an adjusted Pareto diagram for determining the size of influential design factors in experimental design on output values in order to determine the best combination of input factors, as well as factors that can determine output. Two case studies that cover extreme examples are presented in that aim. The first case study examines one input workspace design distributed on tree experimental designs defining space coordinates. Every design has several output values that were measured. The second case study presents two experiments regarding injection of plastic molding process, with same input factors at parts which are different in material and dimensions with geometric deformations as output. It was shown that different experiments lead to different results, of which one is acceptable, while other is useless for further examinations. Accordingly, this paper gives guidelines how to use Taguchi’s contribution ratio and Pareto diagram effectively in determination of influential factors in experiments. Keywords: Design of experiments, Taguchi's orthogonal arrays, contribution ratio, Pareto diagram, Crane cabin space, Plastic injection molding.
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Volume 8, Number 1
BEST SELECTION OF PROJECT PORTFOLIO USING FUZZY AHP AND FUZZY TOPSIS
Mohammad ANISSEH, Fatemeh HEMMATI, Mohammad Reza SHAHRAKI
Abstract:Choosing the optimal portfolio for the project is one of the most important and strategic decisions in most organizations, especially project-based organizations. The issue of the project selection is a periodic activity in order to choose the appropriate and optimal portfolio from the proposed projects and ongoing projects within the organization which can meet organizational goals without waste of the resources and taking into account certain constraints. Consequently, the aim of this paper is to select the best project portfolio by using fuzzy AHP and fuzzy TOPSIS methods. The forgoing methods have been used in a case study, and the result and data have been evaluated from different points of view.
Keywords: Project, Project Portfolio, Project Portfolio Management, Fuzzy AHP, Fuzzy TOPSIS.
CORPORATE SOCIAL RESPONSIBILITY AS A FACTOR OF GLOBAL COMPETITIVENESS
Srđan BOGETIĆ, Dejan ĐORĐEVIĆ, Dragan ĆOĆKALO, Miloš VORKAPIĆ
Abstract: In contemporary business, issues such as environmental protection, taking care of employees and their job satisfaction, ethical principles, supporting endangered groups, caring about young people, caring about the society and the like, are serious challenges that a company has to deal with, no matter which industry it belongs to. One of the most important principles of contemporary business is an organisation based on responsibility. An organisation has to take full responsibility for its actions in the environment in which it operates. Contemporary business puts responsibility on the level of each individual as well. Global market leaders have accepted the application of the concept of corporate social responsibility (CSR) with a view to satisfying customers’ and other stakeholders’ demands. What is seen as a prerequisite for a successful realisation of CSR concepts in a company is a genuine wish for its application by the management, management’s readiness to understand the basic postulates of this concept, good communication (both internal and external), promotion of examples of good practice in the company and outside of it, motivating employees for a more active role in realising good business practices. In this paper, the authors have presented the results of a survey about young people’s attitudes towards corporate social responsibility.
Keywords:Company, Corporate social responsibility, Business strategy, Competitiveness.
THE IMPACT OF MIDDLE MANAGERS IN CHANGE MANAGEMENT IN THE SERBIAN METAL PROCESSING INDUSTRY
Jesa KREINER, Milomir STANKOVIĆ, Dragana SAJFERT, Edit TEREK, Zoran ŠKRINJARIĆ
Abstract:The research was conducted in the metal processing industry of the Republic of Serbia in the period between June 2011 and December 2014. In particular, the study involves the examination of the impact of middle managers in managing design changes in the metal industry in Serbia. The data was obtained by interviewing 103 middle level managers from 10 companies of metal industry from Zrenjanin, Belgrade, Valjevo and Čačak. The method of statistical data processing was performed using factor analysis. The answers to the questions were given by middle managers who deal with industrial design. The main conclusions of the study are: variables serial production, product design, modern production methods, product assembly make factor 1. Variables environmental impact, energy use, recycling and transmission of noise make the factor 2. Variables the life of the structure, tolerance of elements, and comfort of the product make the factor 3. Variable capacity and rigidity of the construction make factor 4. Variables exploitation of products and maintenance make the factor 5. Variables functionality of the product and assembly of the product make the factor 6. Variables technique of network planning and linear programming make factor 7. Variable capacity of the machine and capacity of the factory make the factor 8. These factors will have an impact on design management in the near future, and make the key to survival in the global market for all companies in the field of mechanical engineering and material handling.
Keywords:Design, Production management, Change management, Metal processing.
DETERMINATION OF INFLUENCE OF PART ORIENTATION ON PRODUCTION TIME IN 3D PRINTING
Ivan PALINKAŠ, Eleonora DESNICA
Abstract:Rapid Prototyping and Rapid Manufacturing have significant role in modern production of parts. One of the crucial aspects in all manufacturing is production time (besides the consumption of material and all other elements). In 3D printing several parameters have influence on production like quality of finished surface, mechanical properties of the part, part accuracy, consumption of material for building part and support and building time. In this paper the influence of part orientation on production time will be discussed.
Keywords: Rapid prototyping, Part orientation, Printing time.
OPTIMAL COSTS OF QUALITY
Branko POPOVIĆ
Abstract:It can be noticed that our suppliers monitor the quality of their process results (semi-product, product, documentation, service) mainly through a percentage of malfunctions or a decrease in the index of accuracy and precision of the process. However, in the United States they claim that their users are not interested in it and that defect rates are not quality losses, but costs of suppliers. In addition, in the United States they claim that PPC(capability index) and PPP(accuracy index) are difficult to understand because "what really is a quality improvement when the PPC changes from 0.9 to 1.2". Therefore, the quality of their process results through the average cost of quality, which includes all the costs of quality at all stages of the production process (market research, planning, design, production, control, packaging, sales, servicing and maintenance) work with one worker who performs five jobs: production, quality control, adjustment, release to accept correct, repaired or regrade and scrap incorrect process results, with preventive maintenance, instead of our four jobs (production, adjustment, quality inspector and maintenance worker. In this release, we briefly discussed possible ways of calculating optimal quality costs, which can also enable the organization of jobs in a new, American way.
Keywords:Cost of quality, Optimal cost of quality.
CONTROLLING SYSTEMATIC ERRORS IN ROCK TESTING BY MEASUREMENT UNCERTAINTY ANALYSIS
Bulent TUTMEZ
Abstract: In engineering and fundamental sciences, many important decisions are based on the results of quantitative measurements. When an observation result is stated, it is also required to determine the uncertainty associated with the observation. A measurement uncertainty analysis comprises of random and systematic components. Different from the random fluctuations, systematic uncertainties are resourced from the specifications, environmental conditions, calibration and other heuristic critical factors. This study assesses the systematic and random effects which create some uncertainty on a Schmidt Hammer (SH) rebound hardness test. In particular, as the certain probability terms, the systematic uncertainty component is focused and its volume has been appraised from a control framework. The importance of elemental uncertainty and coverage term are discussed from a statistical control perspective. In the same ground, the effective number of degrees of freedom is also evaluated. In this way, the importance of the fixed error sources has been appraised based on statistical control perspective. The use of an uncertainty term as a measurement parameter in testing-based decision making can provide some reliable and realistic information for engineering risk management and quality control.
Keywords:Measurement uncertainty, Systematic error, Schmidt hammer, Rock mechanics.
SOFTWARE DEVELOPERS' PERCEPTIONS OF SOFT SKILLS IN SOFTWARE REQUIREMENTS ENGINEERING
Tamara ZORIC, Zeljko STOJANOV
Abstract:Software requirements express users' needs and constraints for a software system to be constructed in order to solve some real problems. Both researchers and practitioners from industry point out that well performed requirements related activities have very important role for successful realization of software projects. Software developers work on software requirements jointly with software users. Requirements elicitation and specification are especially important since they require software developers with multidisciplinary skills. These activities require not only technical skills, but also non-technical or soft skills. This article presents a qualitative study with software developers aimed at inquiring how they perceive soft skills in software requirements activities. The study involved 14 software developers, who were interviewed. Data analysis, based on inductive thematic analysis, resulted in three themes that reflect software developers' perceptions about soft skills. The study findings revealed that software developers are aware of soft skills, recognize the need to improve them and understand their importance in everyday practice. Implications of the research findings for researchers, software developers and managers in software organizations are discussed.
Keywords: Soft skills, Human factor, Software requirements, Software developers, Qualitative study.
FUNCTIONS AND TASKS OF PROGRAM MANAGEMENT IN MEDIA COMPANIES
Iva BELESLIN, Biljana RATKOVIĆ NJEGOVAN
Abstract:The paper analyzes the position, functions and tasks of program management in media companies. Given the fact that programming media offer, as part of strategic planning, is the most important element in attracting and retaining audiences and advertisers, program management occupies one of the most important positions in modern media companies, both commercial and public. Depending on the size and organizational structure of media company, the program management constitutes a separate business unit, which, in addition to the program director, also employs a range of media experts responsible for selecting and evaluating quality of media content, researching needs and habits of media audiences, evaluating the broadcast contents, and continuous monitoring of the work of competing companies.
Keywords: Media management, Program management, Programming, Media product, TV.
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