TY - JOUR A1 - Neumüller, Claudia A1 - Kellner, Florian A1 - Gupta, Jatinder N. D. A1 - Lasch, Rainer T1 - Integrating three-dimensional sustainability in distribution centre selection: the process analysis method-based analytic network process JF - International Journal of Production Research N2 - In this paper, we propose a combined methodology for the selection of distribution centres (DCs) by integrating and balancing economic, environmental and social sustainability aspects. The analytic network process (ANP) permits to systematically evaluate possible DCs on the basis of a situation-specific decision structure. A systematic development of the decision networks, which is one of the core challenges using the ANP, is supported by the process analysis method which we extend for that purpose. The validity and soundness of the proposed framework are demonstrated by means of a case study. The case study results reveal that omitting aspects of sustainability can lead to unfortunate results. KW - analytic network process KW - process analysis method KW - distribution centre selection KW - corporate sustainability KW - sustainable supply chain management Y1 - 2015 U6 - https://doi.org/10.1080/00207543.2014.939241 VL - 53 IS - 2 SP - 409 EP - 434 ER - TY - JOUR A1 - Kellner, Florian A1 - Igl, Johannes T1 - Greenhouse gas reduction in transport: analyzing the carbon dioxide performance of different freight forwarder networks JF - Journal of Cleaner Production N2 - There are growing concerns in the food industry about how supply chains can be managed in a more sustainable way. When distribution activities are outsourced to a logistics service provider (LSP), shippers need to evaluate the LSPs they may (potentially) engage in order to ensure that supply chain sustainability goals are met. In this paper, we present a methodology for LSP evaluation and focus on the ecological dimension of sustainability. We examine how the network carbon footprint of a real-world distribution system is affected by the LSP network that is chosen to forward goods from production facilities to customers. To do this, we analyze the shipment data of an existing Fast Moving Consumer Goods (FMCG) manufacturer. A quantitative distribution network model is set up to study the network carbon footprint of 125 scenarios. Real-world shipments are forwarded via five generic, idealized types of LSP networks. In total, 625 network carbon footprints, specified by three distribution logistics variables and the structure of the LSP network, have been calculated. The results show that LSP structures practicing a geographically decentralized consolidation of shipments are most efficient in reducing of greenhouse gas (GHG) emissions. Furthermore, the effects of changing the manufacturer's and the LSP's strategies for deciding on the tonnage to be forwarded via the LSP network or moved by direct transports are quantified. Finally, we estimate the GHG effect of improving the capacity utilization of the vehicles that move the products. KW - Greenhouse gas (GHG) / CO2 network analysis; Network carbon footprint; Fast Moving Consumer Goods (FMCG); Distribution network analysis; Logistics service provider (LSP); Distribution logistics Y1 - 2015 U6 - https://doi.org/10.1016/j.jclepro.2015.03.026 VL - 99 SP - 177 EP - 191 ER - TY - CHAP A1 - Kellner, Florian T1 - Analysing the greenhouse gas sensitivity of distribution networks T2 - Global Cleaner Production and Sustainable Consumption Conference Y1 - 2015 ER - TY - JOUR A1 - Kellner, Florian T1 - Insights into the effect of traffic congestion on distribution network characteristics ? a numerical analysis based on navigation service data JF - International Journal of Logistics Research and Applications N2 - This research studies effects that the average increase in travel times due to road traffic congestion has on characteristics of an existing distribution network. It presents the most detailed estimate of ‘on-the-road’ effects on distribution network characteristics up to now, from the network modelling perspective and from the processed data point of view. A concrete network model allowing for the representation of all relevant transportation flows is presented. The processed traffic information relies on navigation service data. The use of such data allows the requirements that arise for the traffic analysis of a whole distribution network to be met. It is shown that this data source may considerably contribute in forthcoming research. The effects of traffic congestion are quantified to get insights into the extent to which regular traffic congestion affects distribution network characteristics and to understand the mitigating effect when the number of distribution centres is increased. KW - distribution network; road freight transportation; traffic congestion; road traffic; navigation service data Y1 - 2015 U6 - https://doi.org/10.1080/13675567.2015.1094043 VL - 19 IS - 5 SP - 395 EP - 423 ER - TY - THES A1 - Eben, Johannes T1 - Identifikation und Reduzierung realer Schwankungen durch praxistaugliche Prozessführungsmethoden beim Spritzgießen N2 - Eine stetig gleichbleibende hohe Qualität zu fertigen, ist erklärtes Ziel des Spritzgießgewer-bes. Aus technischen oder wirtschaftlichen Gründen ist es jedoch nicht möglich, für konstan-te Produktionsrahmenbedingungen zu sorgen. Die effizienteste Methode ist , die Schwan-kungen über die Wahl der richtigen Prozessführungsmethode auszugleichen. Im ersten Teil der Arbeit konnte herausgefunden werden, welche praxisrelevanten Störgrö-ßen einen Einfluss auf den Spritzgießprozess haben und wie sie sich auswirken. Bei den Materialparametern sind Änderungen der Viskosität (15 %) und der Einfriertemperatur des Materials (4 °C) am Einzug festzustellen. Zusätzlich veränderte sich das Messverhalten der Drucksensoren, wodurch ein Drift von 5 bar entstand. Störgrößenbedingt änderten sich auch die Prozesstemperaturen um 1 °C. Im zweiten Teil der Arbeit werden diverse, während der Arbeit entwickelte, Prozessfüh-rungsmethoden miteinander verglichen. Aufgabe war es, die im ersten Teil gefundenen rea-len störgrößenbedingten Einflüsse zu kompensieren. Es stellte sich heraus, dass sich ledig-lich die materialbedingten Schwankungen nicht ausgleichen lassen. Zumindest können de-ren Auswirkungen durch eine Regelung der werkstoffnahen Parameter abschwächt werden. KW - Spritzgießen KW - Spritzgießmaschine KW - Prozessfähigkeit KW - Qualitätskontrolle KW - Reproduzierbarkeit KW - Qualität KW - Regelung KW - Steuerung Y1 - 2015 UR - https://nbn-resolving.org/urn:nbn:de:bsz:ch1-qucosa-156619 ER - TY - JOUR A1 - Aslan, Alp A1 - Schlichting, Andreas A1 - John, Thomas A1 - Bäuml, Karl-Heinz T. T1 - The Two Faces of Selective Memory Retrieval: Earlier Decline of the Beneficial Than the Detrimental Effect With Older Age JF - Psychology and Aging N2 - Recent work with young adults has shown that, depending on study context access, selective memory retrieval can both impair and improve recall of other memories (Bäuml & Samenieh, 2010). Here, we investigated the 2 opposing effects of selective retrieval in older age. In Experiment 1, we examined 64 younger (20–35 years) and 64 older participants (above 60 years), and manipulated study context access using list-method directed forgetting. Whereas both age groups showed a detrimental effect of selective retrieval on to-be-remembered items, only younger but not older adults showed a beneficial effect on to-be-forgotten items. In Experiment 2, we examined 112 participants from a relatively wide age range (40–85 years), and manipulated study context access by varying the retention interval between study and test. Overall, a detrimental effect of selective retrieval arose when the retention interval was relatively short, but a beneficial effect when the retention interval was prolonged. Critically, the size of the beneficial but not the detrimental effect of retrieval decreased with age and this age-related decline was mediated by individuals’ working memory capacity, as measured by the complex operation span task. Together, the results suggest an age-related dissociation in retrieval dynamics, indicating an earlier decline of the beneficial than the detrimental effect of selective retrieval with older age. (APA PsycInfo Database Record (c) 2016 APA, all rights reserved) KW - cognitive aging KW - episodic memory KW - retrieval, context reactivation KW - inhibition Y1 - 2021 UR - https://doi.org/10.1037/a0039874 VL - 30 IS - 4 SP - 824 EP - 834 ER - TY - JOUR A1 - Schlichting, Andreas A1 - Aslan, Alp A1 - Holterman, Christoph A1 - Bäuml, Karl-Heinz T. T1 - Working memory capacity predicts the beneficial effect of selective memory retrieval JF - Memory N2 - Selective retrieval of some studied items can both impair and improve recall of the other items. This study examined the role of working memory capacity (WMC) for the two effects of memory retrieval. Participants studied an item list consisting of predefined target and nontarget items. After study of the list, half of the participants performed an imagination task supposed to induce a change in mental context, whereas the other half performed a counting task which does not induce such context change. Following presentation of a second list, memory for the original list's target items was tested, either with or without preceding retrieval of the list's nontarget items. Consistent with previous work, preceding nontarget retrieval impaired target recall in the absence of the context change, but improved target recall in its presence. In particular, there was a positive relationship between WMC and the beneficial, but not the detrimental effect of memory retrieval. On the basis of the view that the beneficial effect of memory retrieval reflects context-reactivation processes, the results indicate that individuals with higher WMC are better able to capitalise on retrieval-induced context reactivation than individuals with lower WMC. KW - Blocking KW - Context reactivation KW - Inhibition KW - Retrieval KW - Working memory capacity Y1 - 2021 UR - https://doi.org/10.1080/09658211.2014.927506 VL - 23 IS - 5 SP - 786 EP - 794 ER - TY - GEN A1 - Ott, Holly C. ED - The Case Centre, T1 - Process Quality Monitoring at Altis Semiconductor KW - Case Study Y1 - 2020 ER - TY - GEN A1 - Ott, Holly C. T1 - Using the DMAIC Process Improvement Flow at Hanwag GmbH KW - Case Study Y1 - 2020 ER - TY - GEN A1 - Ott, Holly C. T1 - SPC at Melon Helmets, Production Problem at Melon Helmets KW - Case Study Y1 - 2020 ER -