Surveys suggest that supply chain risk is a growing issue for executives and that supplier reliability is of particular concern. A common mitigation strategy observed in practice is for the buying firm to expend effort improving the reliability of its supply base. We explore a model in which a firm can source from multiple suppliers and/or exert effort to improve supplier reliability. For both ...

Traditional sourcing arrangements for after-sales product support have centered around physical assets. Typically, a customer would pay the supplier of maintenance services in proportion to the resources used, such as spare parts, that are needed to maintain the product. In recent years, we have witnessed the emergence of a new service contracting strategy called performance-based contracting (...

Within procurement literature; many studies focus on providing decision support to the supplier selection problem. However, studies on group decision support are yet to be explored extensively within supplier selection literature, despite its benefits. This study presents the application of a hybrid approach for group decision support for the supplier selection problem. fuzzy set theory, analyt...

Sub-suppliers may violate sustainability standards for a variety of motivations, and focal firms' neglecting sub-suppliers’ violation despite stakeholder pressures to establish compliance at sub-supplier level can bring several tangible intangible risks firms. Focal firms apply sub-supplier's management (SSM) approaches extend sub-suppliers. As sustainable supply chain is fundamentally context-...

This paper studies the impact of the base station (BS) idle mode capability (IMC) on the network performance of multi-tier and dense heterogeneous cellular networks (HCNs). Different from most existing works that investigated network scenarios with an infinite number of user equipments (UEs), we consider a more practical setup with a finite number of UEs in our analysis. More specifically, we d...

In this paper, we propose a novel and effective approach to optimizing the load balancing in a millimeter wave (mmWave) cellular heterogeneous network (HetNet) with a macro-tier and a micro-tier. The unique characteristics of mmWave transmission are incorporated into the network by adopting the Poisson point process (PPP) for base station (BS) location, the line-of-sight (LoS) ball model for mm...

The heterogeneity in cellular networks that comprise multiple base stations’ types imposes new challenges in network planning and deployment. The Radio Resource Management (RRM) techniques, such as dynamic sharing of the available resources and advanced user association strategies determine the overall network capacity and the network/spectrum efficiency. This paper evaluates the downlink perfo...

In this contribution, we consider a heterogeneous two-tiered network where a tier of cognitive self-organizing small cells is deployed over the coverage area of a preexisting orthogonal frequency division multiple access (OFDMA) macro cell. Neither crossnor co-tier cooperation or communication is established, thus no joint signal processing techniques can be implemented by the macro and small b...

Purpose The aim of this study is to develop a framework for the implementation Supplier Kanban System. Design/methodology/approach research was conducted within factory focusing on warehousing and supplier-related operations using an action methodology. Findings period spanning over six years aimed reduce inventory manpower required manage inventory. This initiative led substantial average savi...