caa a22 4500 44535965X CHVBK 20180317142911.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10100-010-0168-1 doi (NATIONALLICENCE)springer-10.1007/s10100-010-0168-1 Multistage reverse logistics of assembly systems in extended MRP Theory consisting of all material flows [Elektronische Daten] [Danijel Kovačić, Ludvik Bogataj] In this paper we will address the issue of environmental problems in connection with extended MRP Theory. It is based on Grubbström's well developed MRP Theory (Grubbström in Z für BetrWirthsch 77(3):297-324, 2007). A major advantage of this theory is that timing and its impact on net present value can be easily calculated even for extended multilevel, multistage production-inventory systems and also for perturbed production systems consisting of many production cells. Theory has recently been extended by including reverse logistics of final and used products (Grubbström etal. in A compact representation of distribution and reverse logistics in the value chain. Faculty of Economics, Ljubljana, 2007). At each activity cell a certain percentage of scrapes is produced and sent for recycling after quality control. Here we present an input-output model which includes all possible flows into a recycling sub-process with several stages of recycling. This model is presented in a generalized form of input and output matrices which has not been developed before. The model will be presented in two different ways which differ in the level of detailed information they contain. Contribution of recycling to the net present value of all activities in a supply chain is expressed and can be compared to environmental damage that could occur if reverse processes are not introduced. Using this approach, the losses and gains in both the economy and the environment could be evaluated more accurately considering all individual flows in the system. No other approaches besides input-output analysis and Laplace transforms have been found so successful in compound supply systems. Springer-Verlag, 2010 MRP Theory nationallicence Environment nationallicence Reverse logistics nationallicence Input-output analysis nationallicence Recycling nationallicence Material requirements planning nationallicence Kovačić Danijel Department of Mathematics and Operations Research, Faculty of Economics, University of Ljubljana, Kardeljeva ploščad 17, 1000, Ljubljana, Slovenia aut Bogataj Ludvik Department of Mathematics and Operations Research, Faculty of Economics, University of Ljubljana, Kardeljeva ploščad 17, 1000, Ljubljana, Slovenia aut Central European Journal of Operations Research Springer-Verlag 19/3(2011-09-01), 337-357 1435-246X 19:3<337 2011 19 10100 https://doi.org/10.1007/s10100-010-0168-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10100-010-0168-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kovačić Danijel Department of Mathematics and Operations Research, Faculty of Economics, University of Ljubljana, Kardeljeva ploščad 17, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 700 1- Bogataj Ludvik Department of Mathematics and Operations Research, Faculty of Economics, University of Ljubljana, Kardeljeva ploščad 17, 1000, Ljubljana, Slovenia aut NATIONALLICENCE 773 0- Central European Journal of Operations Research Springer-Verlag 19/3(2011-09-01), 337-357 1435-246X 19:3<337 2011 19 10100 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer