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Zagreb, Croatia

The success of inventory management in organizations is the presumption for optimal functioning of the supply chains. With the advent of the reverse logistics and the broader concept of the Green supply chain management, management of reverse flows of materials and therefore appropriate methodologies and models for inventory management with returns, have become topics of interest to researchers and in practice. Most scientific papers in the literature, however, observe inventory management with returns from the position of the manufacturer, while inventory management problems of reclaimed products somehow remained on the sidelines by their retailers. For this reason, research was undertaken on the current status, potentials and problems of inventory management of recovered products (parts) in the aftersales automotive industry in Croatia. Source


Horvat R.,Vukeliceva 4 | Kos G.,Institute for Tourism | Sevrovic M.,Vukeliceva 4
Tehnicki Vjesnik | Year: 2015

Planning of road transport infrastructure is a complex process. One of the major issues is determining the design elements of road infrastructure (road type and number of traffic lanes, cross-sectional profile, etc.). When designing roads, parameters from the international literature are used, containing values derived empirically from local data on traffic flow (mostly from northern American cities). The goal of this paper was to explore traffic flows for the purpose of developing a model that will enable scientifically exact description of traffic flows in urban areas of Central Europe. Study of basic parameters of traffic flow included the selection of road location, survey time, traffic survey, analysis of video recordings, as well as statistical analysis and calculation of basic parameters of traffic flow. Added value of this research is demonstrated through the method of collecting and analysing the data for each lane (or roadway) separately in order to detect the difference in the values of the basic parameters of traffic flows. The research was conducted on various urban roads and in various traffic conditions and in this way the basic parameters of traffic flow were obtained. These parameters were used to develop diagrams of relations between speed, traffic density and volume, resulting in cumulative functions of traffic flow parameters for the entire urban traffic network. This made it possible to develop new equations enabling theoretical determination of flow volume, speed and density for a given road. Methods established in this work and the results of the research present a useful and applicable tool for benchmarking road capacity and finding relevant coefficients significant for dimensioning the road cross-sections in urban areas, but also on all other categories of roads. © 2015, Strojarski Facultet. All rights reserved. Source


Marusic Z.,Vukeliceva 4 | Bartulovic D.,Vukeliceva 4 | Makovic B.,Vukeliceva 4
Tehnicki Vjesnik | Year: 2015

The paper is focused on the methods which detect and prevent material fatigue in ageing aircraft structures. The goal is to analyse material fatigue and its impact on aircraft structures. The significance and impact of fatigue is given in description of accidents that were caused directly by material fatigue of the aircraft structures. The most important and most commonly used methods to detect and prevent fatigue in aircraft structures are infinite lifetime concept methods, finite lifetime concept methods, non-destructive testing methods, cold expansion methods, built-in testing equipment, structural health monitoring methods and methods to detect corrosion fatigue. © 2015, Strojarski Facultet. All rights reserved. Source

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