Joerg Ries

• City, University of London

In recent years, various 4.0 technologies have been implemented to support or automate manual warehouse activities to meet the ever-increasing demands for lead time, service quality, productivity, and efficiency. In terms of sustainability, however, the impact of these 4.0 technologies remains underexplored. This study aims to address this gap by d...

Recent studies have provided empirical evidence that innovation performance is related to the way a firm is embedded in its supply network, specifically the centrality of its network position, but it remains unclear why some firms can use inputs from suppliers better than others, despite having comparable structural characteristics in their supply...

Purpose The importance of the supply network to firm performance is well documented. Until now, the firm and its suppliers have been conceptualized as single entities. Yet, multinational corporations (MNCs) are composed of a complex, geographically dispersed internal network of subsidiaries. The supply and internal networks are inherently linked. T...

Purpose Reverse factoring (RF)–a form of supply chain finance (SCF)–is widely recognised as a win-win for both buyers and suppliers. Still, there is evidence that suppliers are often hesitant to join RF programmes initiated by their buyers. This study advances our understanding of how suppliers assess the importance of various attributes of a buyer...

Purpose Online B2B markets offer buyers a new source of information provided by social media signals about suppliers. These signals have not yet received much attention in the supplier selection literature. This study advances our understanding of how buyers respond to social media signals in the supplier selection process. Design/methodology/appr...

This paper considers a supply chain consisting of a retailer for short life cycle products facing stochastic customer demand and a manufacturer that initiates production upon receipt of retail orders. Departing from the common view of the newsvendor problem, we assume that the delivery lead time is not fixed, but that both the retailer and the manu...

The continuing trend towards sourcing components and semi-finished goods for less vertically integrated manufacturing systems globally leads to a dramatic increase in supply options for companies. To ensure that companies benefit from the potentials global sourcing offers, supplier-buyer relationships need to be managed efficiently. Due to the decr...

Logistic service providers are facing significant challenges in recent years due to intensified competition and ever-increasing customer expectations for cohesive high-standard services at low cost. To cope with these developments many companies aim for external growth to realize operational efficiencies and exploit productive opportunities of new...

The continuing trend towards sourcing components and semi-finished goods for less vertically integrated manufacturing systems globally leads to a dramatic increase in supply options for companies. To ensure that companies benefit from the potentials global sourcing offers, supplier-buyer relationships need to be managed efficiently. Due to the decr...

Logistic service providers are facing significant challenges in recent years due to intensified competition and ever-increasing customer expectations for cohesive high-standard services at low cost. To cope with these developments many companies aim for external growth to realize operational efficiencies and exploit productive opportunities of new...

Die Automatisierung manueller Tätigkeiten wird allgemein als wichtiger Schritt in Richtung Industrie 4.0 gesehen. Obwohl eine weitestgehende Automatisierung von Lagerhaltungsprozessen bereits seit einigen Jahren technisch realisierbar ist, haben Untersuchungen in der Vergangenheit gezeigt, dass die Lagerhaltung – im Gegensatz zu anderen Bereichen d...

In many business-to-business transactions, the buyer is not required to pay immediately after the receipt of an order, but is instead allowed to postpone the payment to its suppliers for a certain period. In such a situation, the buyer can either settle the account at the end of the credit period or authorize the payment later, usually at the expen...

In recent years, there has been observed a continued growth of global carbon dioxide emissions, which are considered as a crucial factor for the greenhouse effect and associated with substantial environmental damages. Amongst others, logistic activities in global supply chains have become a major cause of industrial emissions and the progressing en...

Establishing long-term relationships among the members of a supply chain has become necessary to enhance the supply chain's competitiveness in a globalized environment. Besides coordinating operational decisions, such as how much and when to produce or to order, the members of a supply chain may also share financial resources or act jointly on the...

There has been considerable research on the environmental impact of supply chains but most of this has concentrated on the transport elements. The environmental impact of warehousing has received relatively little attention except within the context of distribution networks. A high proportion of total warehouse emissions emanate from heating, cooli...

Kurzfassung ERP-Systeme beinhalten heutzutage vielfältige Heuristiken der dynamischen Fertigungs- und Bestellmengenplanung. Allerdings variiert die Leistungsfähigkeit dieser Verfahren je nach vorliegender Bedarfsstruktur erheblich. Daher kommt der Auswahl einer geeigneten Heuristik eine wichtige Rolle zu, um Mehrkosten auf Grund ungenauer Planungen...

Storage and transportation of goods within global supply chains is a major cause of environmental damage in modern value added processes. Thus, in the past, theory and practice developed several approaches in order to decrease these negative environmental impacts that frequently counteract the traditional efficiency-oriented ambitions. However, in...

This paper provides a survey of literature reviews in the area of lot sizing. Its intention is to show which streams of research emerged from Harris' seminal lot size model, and which major achievements have been accomplished in the respective areas. We first develop the methodology of this review and then descriptively analyze the sample. Subseque...

In a recent paper, Soni and Shah [Soni, H., Shah, N. H. (2008). Optimal ordering policy for stock-dependent demand under progressive payment scheme. European Journal of Operational Research 184(1), 91–100] developed a model to find the optimal ordering policy for a retailer with stock-dependent demand and a supplier offering a progressive payment s...

In a recent paper, Soni and Shah developed a model for finding the optimal ordering policy for a retailer facing stock-dependent demand and a supplier offering a progressive payment scheme. In this comment, we correct several errors in the formulation of the models of Soni and Shah and modify some assumptions to increase the model's applicability....

In many situations, demand risks can be reduced by investing in better forecast analytics. Investments in risk reduction usually have to be made by downstream members of the supply chain, but they affect all companies involved. Clearly, this may lead to conflicts of interests. To study how risk reduction impacts all members of a supply chain and to...

This paper studies a buyer sourcing a product from multiple suppliers under stochastic demand. The buyer uses a (Q, s) continuous review, reorder point, order quantity inventory control system to determine the size and timing of orders. Lead time is assumed to be deterministic and to vary linearly with the lot size, wherefore lead time and the asso...