Bus Fleet Management – A Systematic Literature Review

The research on Bus Fleet Management (BFM) has undergone significant changes. It is unclear whether these changes are accepted as technological change or as a paradigm shift. Perhaps unintentionally, BFM is still perceived as routing and scheduling by some, and by others as maintenance and replacement strategy. Therefore, the authors conducted a Systematic Literature Review (SLR) to overview the existing concepts and school of thoughts about how stakeholders perceive the BFM. The SLR post-study exposed that BFM should be acknowledged as a multi-realm system rather than a uniform dimension of fulfilling timely service. Nonetheless, the work encapsulates BFM evolution which shows the need for the multi-realm research abstracted as "Bus Fleet Mobility Management" and "Bus Fleet Asset Management". The difficulties of transport agencies and their ability to switch from conventional to Zero-Emission Buses (ZEBs) illustrates why we propose such an agenda, by which the research is validated through needs both in academia and in practice

Impact of RFID Technology on Logistic Process Efficiency in Retail Supply Chains

The challenges that logistics faces in the retail industry must be investigated in the context of the specific retail sector as well as the degree of development of the retail market. The research focus in this paper is on logistic processes in supermarket supply. The aim is to deepen the understanding of logistic processes and then to investigate the possibilities of their enhancement by applying radio frequency identification (RFID) as a higher level of information technology for product identification in retail supply chains. The research was conducted in one of the top ten trade companies in the emerging Serbian market. Simulation modelling was performed for one supply chain category, followed by quantification of time and cost performance of the current logistic processes (AS-IS model). Then, in accordance with the capabilities of RFID system, improvements are proposed and integrated into a new simulation model (TO-BE model). The obtained results can be utilised as part of a broader research when deciding on the implementation of modern information technologies in supply chains.</span

Utjecaj treninga karatea na morfološke karakteristike, motoričke sposobnosti i vještine kod dječaka

The purpose of this study was to determine the effects of an experimental treatment on morphological characteristics as well as basic and specific motor abilities of young karate trainees. 12 morphological, 12 basic motor variables and 5 specific motor variables were applied on 82 boys aged 10-12 years. There were statistically significant differences in morphological characteristics at p<.001. The greatest effects were seen for skin folds, which were significantly lower after treatment. Significant differences were also found for most motor skills at p<.001 (for 9 variables; for one at p<.05). However, no differences were determined in foot tapping and balancing on one foot on a balance beam. The results showed that quite satisfactory effects were achieved, particularly in those abilities with no genetic limitations, which can be considered a significant contribution to sport science and theory of sport and sports training.Cilj ovoga istraživanja bio je utvrditi utjecaj eksperimentalnoga programa vježbanja na morfološke karakteristike, bazične i specifične motoričke sposobnosti kod mladih polaznika treninga karatea. Na uzorku 82 dječaka, u dobi od 10 do 12 godina, primijenjeno je 12 morfoloških, 12 bazičnih i 5 specifičnih motoričkih testova. Utvrđeno je da postoje statistički značajne razlike (p < 0,001) u testovima za procjenu morfoloških karakteristika. Najveći učinci transformacijskoga procesa vježbanja uočavaju se na varijabli kožnih nabora koji su nakon kineziološkoga tretmana bili znatno niži. Uočene su i statistički značajne (p < 0,001) razlike kod 8 testova za procjenu motoričkih sposobnosti te za jednu varijablu na nivou značajnosti p < 0,05. Međutim, nije bilo statistički značajne razlike kod testa taping nogom i ravnoteža na jednoj nozi. Rezultati ukazuju kako su postignuti sasvim zadovoljavajući učinci, posebice kod onih sposobnosti koje nisu jako genetski determitirane, što se može smatrati značajnim doprinosom znanosti o sportu i teoriji sporta te sportskoga treninga karatea

The Model of Knowledge Management Based on Organizational Climate

Keeping in mind the fact that organizations in the region of Vojvodina are moving from a negotiated to market economy, this study aims to analyze how the dimensions of collaborative climate affect the various activities of knowledge management. The degree to which collaborative climate influences knowledge work is investigated on 190 participants in the region of the Province of Vojvodina (Serbia). Two standardized questionnaires were used to collect data: a knowledge management questionnaire, which included 32 questions, and a collaborative climate questionnaire of 20 questions. To test the hypothesis of the study, the technique used was descriptive statistics, confirmatory factor analysis, and structural equation modeling. The results show that only the organizational culture as a dimension of collaborative climate contributes to the explanation of all the activities of knowledge management, except the activity of leaving knowledge, which fails to achieve a statistical relationship with any dimension of collaborative climate. This study provides useful insights for practitioners wanting to improve an organization&rsquo;s performance and to increase organizational sustainability and learning. It is a useful base to expand further research in a way of better understanding the impact that collaborative climate has on the implementation of knowledge management in a transition towards a knowledge economy

Life Cycle Assessment of Different Waste Lubrication Oil Management Options in Serbia

On average, approximately 22 thousand tons of new lubrication oil were marketed annually in Serbia in the period 2015–2019. Less than 20% of the waste lubrication oil (WLO) generated was treated, whereas the remainder was mostly uncollected or improperly disposed of. The purpose of this study is to examine different WLO management scenarios that could be implemented in Serbia in the future and to quantify their potential environmental benefits. Different WLO treatment processes (namely the re-refining of used oil for base oil recovery, the use of WLO as a substitute to fossil fuels in cement kilns, and the combustion of WLO in waste incinerators with energy recovery) were evaluated using the life cycle assessment (LCA) and ReCiPe 2016 impact assessment methods. The LCA results obtained indicate that no single WLO treatment process consistently exerts diminished environmental impacts according to all the impact categories considered. From a human health perspective, the incineration of WLO in waste incinerators was found more favourable than the other treatment processes considered, whereas the combustion in cement kilns was the most favourable approach with regard to ecosystem protection. In terms of fossil fuel savings, re-refining technologies performed slightly better than the other processes considered. This can be accounted for by significant amounts of marketable co-products generated in the re-refining process, which can be used as a substitute to fossil-based primary products. Furthermore, a total of four possible WLO management scenarios were developed on the basis of the annual quantities of untreated WLO and a mix of treatment options. The results obtained indicate that up to 22,100 t CO2 equivalent and 34,300 t oil equivalent could be saved annually in Serbia provided the most favourable WLO management scenario is considered