Krzysztof Witkowski

Material Demand Forecasting: An ERP System Perspective

This paper investigates various problems associated with the parameter specification for material requirements planning (MRP) in a typical ERP system. The choice of a suitable MRP procedure and its parameters can reduce excessive quantities of materials and, consequently, cost. The proposed approach is dedicated for MRP procedure based on the forecasting of material demand and inventory that can be obtained with the use of techniques for nonlinear function identification, such as fuzzy-neural system and neural networks. An example is presented which compares the different forecasting models for material demand and inventory.

Modelling value stream flows in the enterprise supply chain

Summary Value stream flows in the supply chain This paper discusses supply chain management in an enterprise. A concept of modelling value stream flows defined in an integrated ERP-class information system is presented. The paper focuses on value stream flows in the areas of procurement, production, and sales in an enterprise. Such flows are illustrated by examples. Streszczenie Modelowanie przepływów strumieni wartości w łańcuchu dostaw przedsiębiorstwa Artykuł podejmuje problematykę zarzadzania łańcuchem dostaw w przedsiębiorstwie. Przedstawiono koncepcję modelowania przepływów strumieni wartości osadzonych w zintegrowanym systemie informatycznym klasy ERP. Skoncentrowano się na przepływach strumieni wartości w obszarach zaopatrzenia, produkcji oraz sprzedaży przedsiębiorstwa ilustrując je na przykładach.

The Use of Instruments of Logistics and Marketing in Transport Enterprises in Lubuskie Voivodeship

Background: The aim of the article is to verify the logistics and marketing instruments used in transport enterprises in Lubuskie voivodeship. The article pr sents the results of surveys of transport companie s. Based on these studies in transport enterprises in Lubuskie, the c urrent level of the use of logistics and marketing struments was determined. Logistics and marketing instruments wer e separated to study the needs of transport compani es in Lubuskie voivodeship. The choice of these instruments gave r ise to a study f the possibility of using them in t he implementation of business operations. From the findings it can be in ferred that they are useful for the voivodeship, an d that such a system can be implemented in the whole country. Methods: The study was conducted in the second half of 201 4 and 140 transport enterprises in Lubuskie. Based o n the research results, classifications of instruments we re d veloped using logistics and marketing division at their levels. Results: On the basis of these findings and observations, the authors have analysed the levels of identificat on instruments, logistics and marketing. On this basis , it was possible to identify the instruments used by logistics and marketing in these companies. Conclusions: Based on the study of transport companies in Lubus kie voivodeship, a selection of logistics and marke ting instruments were identified, along with a classific ation of the logistics and marketing instruments us ed. With the implementation of the above steps to classify the u sage level of logistics and marketing instruments, the ability to match these levels to data transport companies was establ ished.

Modeling Transportation Preferences of Urban Residents: The Case of Poland

The paper presents the application of selected methods of multivariate statistical analysis including factor and conjoint analyses in terms of modeling transportation preferences of urban residents. The introduced methodologies can be useful tools for local authorities while designing solutions in order to improve the competitiveness of public transport to private transport. The results of the studies presented in the article are part of the research project implemented in 2010–2013 under a title. “Reference model of city logistics and the quality of life”. For the study undertaken in this paper, three medium-sized cities, located in the western part of Poland, were selected.

Life Cycle Perspective for Improving Sustainable Supply Chain Management

This paper presents the supply chain management with life cycle approach and direction of improving sustainable supply chain management. The main aim of this paper is to implicate of life cycle perspective across the supply chain, to show importance of this concept. This paper provides an overview of the current status of sustainability assessment methodology and its applicability for extended supply chain. Life cycle approaches to supply chain and Key Performance Indicators (KPIs) for improving sustainable supply chain were developed in this paper.