Developing effective reverse logistics programs

A recent survey in the automobile aftermarket industry examines reverse logistics practices. The research focuses on two key issues: 1) the influence of program design characteristics, i.e., formalization, returns policy restrictiveness, and innovation, on program performance and 2) the differential influence of making versus buying reverse logistics program software. The results provide guidelines for managerial decisions relating to reverse logistics.     

Outsourcing reverse logistics of high-tech manufacturing firms by using a systematic decision-making approach: TFT-LCD sector in Taiwan

Reverse logistics are increasingly crucial for the supply chain strategy of global high-tech manufacturing firms. As reverse logistics operations are significantly more complex than traditional manufacturing supply chains, many high-tech manufacturers are examining the feasibility of outsourcing reverse logistics activities to third party logistics providers (3PLs) from a strategic planning perspective. Internal resources and capabilities are thus examined from a resource-based perspective to identify which reverse logistics service requirements could be fulfilled in-house or outsourced. Therefore, this work presents a systematic approach using the analytical network process (ANP) not only to investigate the relative importance of reverse logistics service requirements, but also to select an appropriate 3PL. Empirical results based on the case of the TFT-LCD sector in Taiwan indicate that information technology management is of priority concern in reverse logistics services. In addition to providing a valuable reference for manufacturers concerned with service requirements for outsourcing, results of this study significantly contribute to the efforts of 3PLs in evaluating whether they comply with potential customer requirements based on their service capabilities.     

An inventory control model with consideration of remanufacturing and product life cycle

This paper investigates inventory control policies in a manufacturing/remanufacturing system during the product life cycle, which consists of four phases: introduction, growth, maturity, and decline. Both demand rate and return rate of products are random variables with normal distribution; the mean of the distribution varies according to the time in the product life cycle. Closed-form formulas of optimal production lot size, reorder point, and safety stock in each phase of the product life cycle are derived. A numerical example is presented with sensitivity analysis. The result shows that different inventory control policies should be adopted in different phases of the product life cycle. It is also found that the optimal production lot size and reorder point are not sensitive to the phase length and the demand changing rate.     

An economic production and remanufacturing model with learning effects

Managing inventory in reverse logistics has been receiving much attention in recent years. One inventory problem that has been of interest to researchers is the production and remanufacturing model, where used items are collected and remanufactured to satisfy customer demand. The available models in the literature do not discuss the learning effects in production and remanufacturing processes. This may not be true in industries where labour costs and learning costs are expensive. By modelling these learning effects, management may use established learning models to better utilize capacity, manage inventories, and coordinate production and distribution throughout the chain.This paper extends the production, remanufacture, and waste disposal model by assuming learning to occur in both production and remanufacturing processes. However, this paper also assumes that improvements due to learning require capital investment. Mathematical models are developed, numerical examples are provided, and results are discussed.     

Sustainability and business-to-business marketing: A framework and implications

Researchers in several business disciplines have convincingly argued that environmentally responsible strategies can contribute to competitive advantage and superior financial performance. While debates on ecological conservation and environmental practices within marketing have raged for over three decades, much of the focus has been on identifying and targeting the environmentally-conscious consumer. Less attention has been given to marketing's role in a green supply chain and its interface with environmentally-friendly manufacturing and operations. We integrate disparate streams of research and develop a broader framework to understand the appropriate role and focus of business-to-business marketing in the supply chain for achieving environmental sustainability objectives. We identify three major strategies - the reduction of surplus supply of products, reduction of reverse supply, and internal marketing - where marketing's role in environmental sustainability is crucial for achieving superior competitive advantage and financial performance.     

An extended production/recycling model with stationary demand and return rates

A production–recycling system is investigated. A constant demand can be satisfied with production and recycling. The used items are bought back and then recycled. The non-recycled products are disposed of. Two types of models will be analyzed. The first model examines the EOQ-related costs and minimizes the relevant costs. The second model generalizes the first model with the introduction of the cost function with linear waste disposal, recycling, production and buyback costs. It is asked whether the pure (either production or recycling) or mixed strategies are optimal and it will be shown that under these circumstances the mixed strategies are dominated by the pure strategies. The paper generalizes a former model proposed by the authors for the case of one recycling and one production batch to the case of arbitrary batch numbers.     

Robust optimal policies of production and inventory with uncertain returns and demand

We consider an inventory and production planning problem with uncertain demand and returns, in which the product return process is integrated into the manufacturing process over a finite planning horizon. We first propose an inventory control model for the return and remanufacturing processes with consideration of the uncertainty of the demand and returns. Then a robust optimization approach is applied to deal with the uncertainty of the problem through formulating a robust linear programming model. Moreover, properties on the robust optimization model are studied, and an equivalent robust optimization model based on duality theory is obtained which allows the solutions to be derived more efficiently. Finally, we provide a set of numerical examples to verify the effectiveness of the approach and analyze the effects of the key parameters on the solutions.     

A production/remanufacture model with returns’ subassemblies managed differently

This paper considers a production-remanufacturing inventory model for a single product, where constant demand is satisfied from the inventory of newly produced and remanufactured items. Although the available models in the literature imply that collected used units (or returns) are disassembled for recovery purposes, these models really do not treat them as such. Contrary, the returns are assumed to be recovered as whole units, perhaps, for simplicity. This assumption may not capture the benefits reaped from product recovery programs. This paper addresses this limitation in the literature and assumes that each unit of a used product is collected and disassembled into components, where these components are sorted into subassemblies, which are fed back into the production-remanufacturing process. The returned subassemblies are remanufactured and reassembled to represent a second source of as-good-as-new units of the end-product. For this multi-component inventory problem, the question that needs to be answered is whether, or not, extreme strategies of either pure remanufacturing or pure production are more economical than a mixed strategy (one that combines both strategies). A mathematical model is developed that accounts for the inventories of subassemblies. The results suggested that not accounting for the disassembled components of a product leads to inappropriate inventory decisions that are not environmentally sound.     

Impact of RFID information-sharing strategies on a decentralized supply chain with reverse logistics operations

The integration of environmental practices in a supply chain has been study for the past few decades. However, most of the work relies on centralized decisions made by one player. Few papers address the complex dynamics of environmental decentralized supply chains and how these dynamics can affect environmental and economic outcomes. To study this problem, we consider a supply chain with a manufacturer and two different suppliers: a recycled-material and a raw-material supplier. The players make individual inventory decisions to satisfy demand and reduce cost. Further, this supply chain encompasses stochastic elements such as in demands, returns, and collection leadtimes. These decentralized decisions and random factors can cause underperforming results; therefore, new inventory models and technologies are needed to help companies increase coordination within these systems. We model the implementation of Radio Frequency Identification (RFID) in the supply chain to determine if real-time inventory monitoring and information sharing can help the system attain higher environmental benefits (more returns) and higher economic benefits (less cost). We study two scenarios through a simulation-based analysis: No RFID and RFID. Numerical studies show that environmental benefits are significantly increased with the attainment of more returns. However, although economic benefits are realized, they are less significant than the environmental benefits. Further regression and sensitivity analyses on the cost performance measures reveal that economic benefits depend on several drivers inside the system. We present managerial insights that illustrate what configurations within this complex system can lead to the achieving of environmental as well as economic benefits.     

Implementing market segmentation using full-refund and no-refund customer returns policies in a dual-channel supply chain structure

Products returned by customers are common in the retail industry and result in costs to both the supplier and the retailer. In practice, retailers implement returns policies that may give customers a full, partial, or no refund for returned products. In this paper, we examine how a firm that faces customer returns can enhance profit by using different customer returns policies, full-refund and no-returns, as a device to segment its market into a dual-channel structure. We also show the impact of customer returns on the firm's pricing and ordering decisions, as well as on the firm's profit in such a dual-channel structure.     

Purchasing professional services: A transaction cost view of the antecedents and consequences of purchasing formalization

Professional services represent an increasing share of expenditures in contemporary organizations. While these services are often of strategic importance, they are also perceived as being difficult to purchase and use, which creates challenges for the purchasing process. In order to address these challenges, organizations are increasingly engaging in systematic efforts to improve their ability to purchase professional services. These efforts focus on formalizing the purchasing process by introducing policies, guidelines, and other measures for the hiring of service suppliers. Based on a transaction cost economic framework, the current paper investigates the nature, antecedents and consequences of formalization initiatives in the purchasing of professional services. The results from a cross-sectional study of 76 large Swedish organizations show that the formalization of purchasing professional services takes two different forms: the formulation of policies and the establishment of preferred supplier agreements. The former is driven by company size, whereas the latter is driven by the frequency of purchase transactions. Only the establishment of policies, however, is found to be positively related to organizations' perceived ability to purchase professional services.     

论国际分工的反梯度推移演进均衡

本文针对克鲁格曼的“新贸易理论”中三个模型：技术创新与技术转让、发达国家的技术进步、发展中国家的技术进步．结合交易成本进行了分析探讨．应用不完全信息动态博弈模型分析发达国家与发展中国家在技术进步上的合作博弈．得出与克鲁格曼相反的结论：发展中国家的技术进步不会损害发达国家的利益．而且以技术创新为动力的要素报酬递增所引起的规模收益递增现象，引导发展中国家从事异质产品生产．给发达国家与发展中国家同时带来福利递增。为此，发展中国家应走反梯度分工演进道路。     

Production planning of a hybrid manufacturing-remanufacturing system under uncertainty within a closed-loop supply chain

This paper deals with the production planning and control of a single product involving combined manufacturing and remanufacturing operations within a closed-loop reverse logistics network with machines subject to random failures and repairs. While consumers traditionally dispose of products at the end of their life cycle, recovery of the used products may be economically more attractive than disposal, while remanufacturing of the products also pursues sustainable development goals. Three types of inventories are involved in this network. The manufactured and remanufactured items are stored in the first and second inventories. The returned products are collected in the third inventory and then remanufactured or disposed of. The objective of this research is to propose a manufacturing/remanufacturing policy that would minimize the sum of the holding and backlog costs for manufacturing and remanufacturing products. The decision variables are the production rates of the manufacturing and the remanufacturing machines. The optimality conditions are developed using the optimal control theory based on stochastic dynamic programming. A computational algorithm, based on numerical methods, is used for solving the optimal control problem. Finally, a numerical example and a sensitivity analysis are presented to illustrate the usefulness of the proposed approach. The structure of the optimal control policy is discussed depending on the value of costs and parameters and extensions to more complex reverse logistics networks are discussed.     

The role of free economic zones in global supply chains—a case of reverselogistics

Schengen border crossings are moving from former European borders southeastwards. These changes influence some socioeconomic positions of regions and availability of human resources in the nodes of global supply chains. Free Economic Zone (FEZ) has been considered as a tool to make the flow of goods and the flow of human resources less exposed to risk. Considering the production function in activity cells of a global supply chain, the perturbations of NPV of activities in total chain are expressed in cases, where the availability of human resources and perturbations of lead time takes place, both of which are the result of activities at border crossings. The extended MRP approach with an extension to distribution and reverse logistic part of a supply chain is used to develop the model for evaluating the influence of the lead-time perturbations and perturbations in availability of properly skilled human resources in different regions separated by Schengen borders. Tax exemption in an FEZ is presented as a compensation for the negative impact of Schengen border on the net present value of a global supply chain and consequently as the compensation for shortages and costs of properly skilled workers. The paper gives answer to the question, what is the level of reduction of tax burden in the FEZ of accession countries, which is only a compensation for the higher labour costs, additional administrative costs and the cost of risks assumed at border crossings. We have explained why we are not able to talk about an unfair competition of producers in an FEZ’s atall.     

Design of sustainable supply chains under the emission trading scheme

Increase in environmental concerns together with legislations are forcing industries to take a fresh look at the impact of their supply chain operations on the environment. This paper introduces a mixed-integer linear programming based framework for sustainable supply chain design that considers life cycle assessment (LCA) principles in addition to the traditional material balance constraints at each node in the supply chain. Indeed, the framework distinguishes between solid and liquid wastes, as well as gaseous emissions due to various production processes and transportation systems. The framework is used to evaluate the tradeoffs between economic and environmental objectives under various cost and operating strategies in the aluminum industry. The results suggest that current legislation and Emission Trading Schemes (ETS) must be strengthened and harmonized at the global level in order to drive a meaningful environmental strategy. Moreover, the model demonstrates that efficient carbon management strategies will help decision makers to achieve sustainability objectives in a cost-effective manner.     

Relational and transactional factors as hybrid criteria for buyer project selection (BPS): An exploratory study from industrial suppliers' perspective

Working off the literature in selection studies, evolving from supplier selection, to buyer selection, to selection as transaction embedded in relationality, this study asks how industrial suppliers actually engage in buyer project selection (abbreviated as “BPS”). Semi-structured interviews and focus group discussions were used to construct and pilot-test a new BPS instrument among electronics executives in Taiwan. A mail survey using the new BPS instrument subsequently resulted in three significant research findings. First, the five BPS factors uncovered a hybridity thesis: factors from the transactional paradigm and the relational paradigm co-existed side by side. Second, even though suppliers engaged in project selection, the majority of the respondents' firms lacked clearly articulated formal BPS criteria. Third, relational satisfaction, more than perceived power, significantly impacted project selection; and project economic contribution, more than the other four BPS factors, played a substantive role in assessing relationality. Our research hopefully will help practitioners to recognize the need of BPS formalization, making a rich literature related to the co-existence/hybridity of transactional and relational approaches in project marketing and management relevant to Taiwan, China and the broader Asian business world in the future.     

承销商声誉与IPO抑价的关系研究综述

本文在文献回顾的基础上,对承销商声誉与IPO抑价的关系问题展开理论综述。国外通过一系列的研究表明,承销商声誉与IPO抑价之间呈负相关关系。虽然承销商声誉是影响IPO抑价率的重要因素之一,但在我国承销商声誉与IPO抑价间这种负相关关系并不显著,文章通过对国内外理论界对承销商声誉与IPO抑价之间关系的研究进行比较和综述。     

物流企业构筑城市物流特色

中国物流园区的发展速度已充分说明政府对城市物流的高度重视和投入,但物流企业的发展则相对滞后,其结构分布显示出政府部门的强势主导和民营企业的缺位。通过营造物流企业良好发展环境,平等对待中小物流企业,融入市场机制等方面的努力,将有利于促进物流企业发展,构筑城市物流特色。