Competitive supply chain network design: An overview of classifications,models, solution techniques and applications

Supply chain network design (SCND) determines the structure of a chain and affects its costs and performance. SCND deals with a variety of decisions such as determining number, size and location of facilities in a supply chain (SC) and may include tactical decisions (such as distribution, transportation and inventory management policies) as well as operational decisions (such as fulfilling customers demand). SCND has a voluminous literature. Most of the literature deals with a single SC and ignores the existing competitor SCs and future emerging ones. However, SCs compete together to capture more market shares. Even if there is not any competitor at the moment, SCs should be prepared for possible future competitive situation at the SCND stage. On the other hand, many competitive models assume that the supply chain network (SCN) and its structure already exist. Few research papers consider both aspects of design and competition. In this paper, we provide a review of SCND literature and highlight the effects of competitive environment on SCND. We review, classify, and introduce the major features of the proposed models in both SCND and competition literature. After investigating proposed competitive SCND models we develop a general framework for modeling the competitive SCND problems considering managerial insight and propose potential areas for future research.     

Sustainable supply chain network design: A case of the wine industry in Australia

This paper comes at a time when many companies and people are increasingly facing various global problems linked to sustainability challenges, and when the literature is still scarce on research incorporating all three dimensions of sustainability in supply chain analytical models. The paper conducts a case-based modeling study to address this gap in the area of supply chain network design. We investigate the wine supply chain and propose a generic model for sustainable wine supply chain network design encompassing economic, environmental and social objectives. The case company is a real large-sized wine company located in Australia, for which a customized model is provided. Both models are formulated as a multi-objective mixed-integer program and solved using the augmented ϵ-constraint method by CPLEX. Social implications of the feasible scenarios are examined through introducing social impact coefficients. Non-dominated solutions are obtained and some balanced scenarios are proposed. The results show trade-offs between the objectives, yet more interestingly demonstrate how large is the gap between the existing supply chain configuration and the proposed scenarios in terms of supply chain cost and emissions.     

Literature review: Strategic network optimization models in waste reverse supply chains

In scientific literature two large, partly overlapping areas regarding the environmental and economical attractive removal of waste coexist: reverse logistics and waste management. Both fields study, among other topics, the flows of discarded products leaving the end consumer. This review takes an integrated point of view on reverse logistics and waste management and aims at a better integration. More specifically, it gives a concise but complete overview of the efforts already performed in the area of strategic network design in waste reverse supply chains by means of combinatorial optimization models. Its purpose is to guide interested readers and researchers directly to publications of their interest, and let them identify courses other than the well-worn paths. Among others, we explicitly refer to (1) the importance of environmental, social and performance indicators in multi-objective models, (2) the potential of incorporating the different waste reverse supply chain stakeholders into the network design model, (3) the consideration of future waste reverse supply chain developments like extended producer responsibility schemes and the circular economy and their challenges, and (4) better heuristics to deal with the increasingly complex strategic network design models.     

Organizational Social Network Research: Core Ideas and Key Debates

Abstract

Given the growing popularity of the social network perspective across diverse organizational subject areas, this review examines the coherence of the research tradition (in terms of leading ideas from which the diversity of new research derives) and appraises current directions and controversies. The leading ideas at the heart of the organizational social network research program include: an emphasis on relations between actors; the embeddedness of exchange in social relations; the assumption that dyadic relationships do not occur in isolation, but rather form a complex structural pattern of connectivity and cleavage beyond the dyad; and the belief that social network connections matter in terms of outcomes to both actors and groups of actors across a range of indicators. These leading ideas are articulated in current debates that center on issues of actor characteristics, agency, cognition, cooperation versus competition, and boundary specification. To complement the review, we provide a glossary of social network terms.     

A hybrid approach to configure eco-efficient supply chains under consideration of performance and risk aspects

Formal models that support multi-criteria decision making represent a strongly growing area in sustainable supply chain management research. However, uncertainties and risks are seldom considered in quantitative models for green supply chain (SC) design. The paper at hand suggests a hybrid approach to configure an eco-efficient SC for a new product under consideration of economic and environmental risks. Discrete-event simulation is applied to assess the financial, operational and environmental performance of different SC configuration options while the value-at-risk concept is adapted to evaluate related SC risks. The analytic hierarchy process is employed to solve the resulting multi-criteria decision problem of choosing the best option. The approach is illustrated at a case example of a fast moving consumer goods manufacturer.     

Sustainable supply chain practices: an empirical investigation on Indian automobile industry

The purpose of this research study is to analyze sustainable supply chain (SSC) management practices for Indian automobile industry and to identify the critical factors for its successful implementation. Despite the fact that SSC has been frequently promoted as a means of improving business competitiveness, little empirical evidence exists in the literature validating its positive link with organizational performance. Sustainable supply chain practices (SSCP) not only help in reducing environmental degradation but it also has social and economic implications (as per tipple bottom line approach). For this purpose, empirical data is collected to measure the SSCP prevailing in Indian automobile industry. A structural equation modeling technique is used to build the measurement and structural models. Later, statistical estimates are used to validate the model that has been built. The data analysis helps to determine whether to accept or reject the hypothesis that has been stated based on the structural model. The result shows how SSCP are correlated and help in improving the supply chain performance among the industries being surveyed. It is also observed that environmental and social performance have a positive relationship with economic performance.     

Operations Risk Management: Overview of Paul Kleindorfer's Contributions

This paper reviews Paul Kleindorfer's contributions to Operations Management (OM), with a special focus on his research on risk management. An annotated bibliography of selected other contributions reviews the breadth of topics that have occupied Kleindorfer's research attention over his now 45 + years of research. These include optimal control theory, scheduling theory, decision sciences, investment planning and peak load pricing, plus a number of important applications in network industries and insurance. In the area of operations risk management, we review recent work that Kleindorfer and his colleagues in the Wharton Risk Center have undertaken on environmental management and operations, focusing on process safety and environmental risks in the chemical industry. This work is directly related to Kleindorfer's work in the broader area of “sustainable operations”, which he, Kal Singhal and Luk Van Wassenhove recently surveyed as part of the new initiative at POMS to encompass sustainable management practices within the POMS community. Continuing in the area of supply chain risks, the paper reviews Kleindorfer's contributions to the development of an integrated framework for contracting and risk hedging for supply management. The emphasis on alignment of pricing, performance and risk management in this framework is presaged in the work undertaken by Kleindorfer and his co‐authors in the 1980s on after‐sales support services for high‐technology products. This work on supply chain risk, and its successors, is reviewed here in light of its growing importance in managing the unbundled and global supply chains characteristic of the new economy.     

A sustainable second-generation biodiesel supply chain network design problem under risk

This paper presents a multi-objective possibilistic programming model to design a second-generation biodiesel supply chain network under risk. The proposed model minimizes the total costs of biodiesel supply chain from feedstock supply centers to customer centers besides minimizing the environmental impact (EI) of all involved processes under a well-to-wheel perspective. Non-edible feedstocks are considered for biodiesel production. Variable cultivation cost of non-edible feedstock is assumed to be non-linear and dependent upon the amount of cultivated area. New formulation of possibilistic programming method is developed which is able to minimize the total mean and risk values of problems with possibilistic-based uncertainty. To solve the proposed multi-objective model, a hybrid solution approach based on flexible lexicographic and augmented ɛ-constraint methods is proposed which is capable to find appropriate efficient solutions from the Pareto-optimal set. The performance of the proposed possibilistic programming method as well as the developed solution approach are evaluated and validated through conducting a real case study in Iran. The outcome of this study demonstrates that high investment cost is required for improving the environmental impact and risk of sustainable biodiesel supply chain network design under risk. Decision maker preferences are required for suitable trade-off among total costs, risk values and environmental impact.     

Analysing critical success factors to implement sustainable supply chain practices in Indian automobile industry: a case study

The aim of this article is to analyse the critical success factors (CSFs) behind the successful implementation of sustainable supply chain practices in Indian automobile industry. Supply chain sustainability is a critical and timely topic for the developing country like India that captures increasing concerns over sustainability, whether driven by current legislation, public interest or competitive opportunity. Identification of CSFs responsible for sustainable supply chain practices and evaluating their contextual relationships has the potential to affect future government policy, current production operations and identify new business models. In response to this, this paper intends to identify CSFs based on organisational theory and model them to implement sustainable supply chain practices in Indian automobile industry. Twenty-five CSFs to implement sustainable supply chain practices based on organisational theory are recognised by means of the literature review and in discussions with experts in one case study organisation. A solution methodology based on the interpretive structural modelling (ISM) technique is used to propose a structural model, which not only helps in understanding the contextual relationship among these CSFs, but also in determining their interdependence to implement sustainable supply chain practices. Further, the importance of CSFs has been determined based on their driving and dependence power using MICMAC analysis. Our overarching thesis is that the insights gained are useful for Indian automobile industry and would help practitioners, regulators and academicians to focus their efforts towards implementation of sustainable supply chain practices.     

Environmental and social supply chain management sustainability practices: construct development and measurement

The purpose of this paper is to conceptualise and operationalise the concept of supply chain management sustainability practices. Based on a multi-stage procedure involving a literature review, expert Q-sort and pre-test process, pilot test and survey of 156 supply chain directors and managers in Ireland, we develop a multidimensional conceptualisation and measure of social and environmental supply chain management sustainability practices. The research findings show theoretically sound constructs based on four underlying sustainable supply chain management practices: monitoring, implementing systems, new product and process development and strategy redefinition. A two-factor model is then identified as the most reliable: comprising process-based and market-based practices.     

逆向物流网络设计研究进展

随着环境资源压力的增大,政府法制要求以及社会环保要求的提升,研究者对逆向物流网络的研究日益关注。本文系统地对近几年的逆向物流网络设计研究进行回顾,讨论并对比研究了网络设计研究问题,研究方法,定量模型,求解算法以及逆向物流网络设计中不确定环境方面的研究。探讨了逆向物流网络研究中的不足,为研究者未来的研究方向提供了参考。     

Sustainable Operations Management

Operations management researchers and practitioners face new challenges in integrating issues of sustainability with their traditional areas of interest. During the past 20 years, there has been growing pressure on businesses to pay more attention to the environmental and resource consequences of the products and services they offer and the processes they deploy. One symptom of this pressure is the movement towards triple bottom line reporting (3BL) concerning the relationship of profit, people, and the planet. The resulting challenges include integrating environmental, health, and safety concerns with green‐product design, lean and green operations, and closed‐loop supply chains. We review these and other “sustainability” themes covered in the first 50 issues of Production and Operations Management and conclude with some thoughts on future research challenges in sustainable operations management.     

An environmentally conscious robust closed-loop supply chain design

Strategic network planning activities of national and even more of multinational companies are recently influenced by an increasing number of laws and regulations regarding environmental issues. On top of that non-governmental bodies pose additional pressures on companies to comply with environmental as well as social standards. Therefore, this paper presents a multi-objective and robust optimization-based closed-loop supply chain design model. In the objective function both expected total costs as well as carbon dioxide equivalents (CO₂e) are to be minimized. Customer demands and used-product return ratio are considered to be uncertain. The model supports the decision makers to better understand the influence of parameters and their values as well as the interrelationship between these when deciding on the structure of the entire value chain.     

闭环供应链中制造商与销售商合作创新模型研究

对废旧产品回收再利用既减少环境污染,又能节约社会有用资源,闭环供应链的研究受到学术界的广泛重视。利用生产函数,在稳定型和风险型市场背景下构造了六类非博弈型创新研究和广告合作的二级闭环供应链模型,并采用多种数学方法给出了模型最优解的存在性与求解方法。信息不对称是供应链的重要特点,提高信息共享程度是未来供应链发展的根本趋势。本文首先根据如下假设进行建模,即创新投入能使再制品单位成本降低,广告投入带来废旧产品回收率提高和再制品销售量的增加;其次,模型求最优解过程中强调合作,提出了应制定内部利润分配规则和联合对外行动决策两套契约的供应链管理思想。各成员放弃（至少是减少）内部“斗智斗勇”,按照保证供应链整体利润最大化的原则确定各方的最佳投资额;最后,对模型进行了仿真分析,应用实例说明了在同样市场背景和创新条件下合作比博弈通常能给供应链带来大得多的利润。另外,无论在稳定型还是风险型市场背景下,平等合作与主从合作供应链总利润相同。因此,主企业要尽量对较弱企业进行扶持,提高供应链整体对外竞争能力。     

The emergence of sustainable manufacturing practices

Sustainable manufacturing appears to be a rapidly developing field and it would be expected that there is a growing body of knowledge in this area. Initial examination of the literature shows evidence of sustainable work in the areas of product design, supply chain, production technology and waste avoidance activities. Manufacturers publish metrics showing significant improvements in environmental performance at high level but information on how these improvements are achieved is sparse. Examining peer-reviewed publications focused on production operations there are few cases reporting details and there has been little prior analysis of published sustainable manufacturing activity. Moreover, the mismatch between academic and practitioner language leads to challenges in interpretation. This article captures and analyses the types of sustainable manufacturing activities through literature review. In turn, this can help manufacturers to access examples of good practice and help academics identify areas for future research.     

Incorporating social networks into leadership development: A conceptual model and evaluation of research and practice

Multilevel and relational views of leadership are expanding the focus of leadership development beyond individuals' knowledge, skills, and abilities to include the networked patterns of social relationships linking members of dyads and larger collectives. In this review, we present a conceptual model explaining how three distinct approaches for network-enhancing leadership development can improve the leadership capacity of individuals and collectives. We then present a review of the leadership development literature and the results of a survey of 282 practitioners to assess the extent to which these approaches have been examined in research and implemented in practice. Our review revealed that leadership research and leadership development practice are outpacing leadership development research in terms of incorporating networks. We aim to spur future research by clarifying the targets, objectives, and underlying mechanisms of each network enhancing leadership development approach in our conceptual model. Further, we identify additional literature, not traditionally considered within the realm of leadership development that may help advance empirical examinations of these approaches.     

Empirical research opportunities in reverse supply chains

This study reviews the literature in reverse supply chains (RSCs) and develops 10 research propositions to be studied using empirical research methods. Businesses increasingly have to cope with product returns, mandated environmental regulations and increasing costs associated with product disposal. Through effective management of the RSC, managers can improve process efficiencies, customer service, supply chain design, product design, after-market product sales and after-sales service. Most research in RSCs has relied on case studies and optimization models. Opportunities exist to use survey-based research methods to explain current practices, predominant and critical issues, and managerial techniques used to manage the RSC.     

Closed-loop supply chain configuration for new and reconditioned products: An integrated optimization model

Closed-Loop Supply Chain Management (CLSCM) is considered as a strategic response to the call for corporate sustainability while further expanding the scope of value creation to include product reconstruction. The Closed-Loop Supply Chain (CLSC) performance is directly related to the CLSC network design. The CLSC network design, with long-term and strategic connotations, involves selection of an integrated network of partner organizations to be engaged on one hand in the forward supply chain processes relevant to families of existing and new products and also involved in reverse supply chain activities relevant to reconstruction of the returned products. At the tactical level, Closed-Loop Supply Chain Configuration (CLSCC) attempts to address issues pertinent to launch of a new product and its reconstruction. The CLSC network design is well studied in the current literature, but addressing the CLSCC is neglected. To study the CLSCC problem we: (a) develop an integrated optimization model for problem; (b) present a real-world case study of a battery manufacturer; (c) based on the case study, we conduct a comprehensive set of computational experiments followed by a series of what-if analyses to compare profitability of the Forward Supply Chain Configuration (FSCC) versus the CLSCC; and (c) discuss the key observations and managerial implications drawn from the computational experiments, applicable to other real-world instances. The significant outcomes of the study suggest that: (i) performance of the firm׳s base case integrated CLSCC model is significantly better than the current supply chain model (ii) the sales-price ratio of new battery is found to be negatively related with the maximum acquiring price of used batteries; (iii) combination of sales price ratios of new and reconditioned batteries determines the total net profit for a given return rate. Finally, important managerial insights and scope for future research are discussed.     

“三重底线”下中国商业银行经营效率及其影响因素分析

银行业在我国经济中扮演着重要的角色。在现今可持续发展理念的倡导下，单一维度的银行效率评价已经难以适应时代的需要。为此，本文基于"三重底线"视角分别构建了中国商业银行经济、社会与环境效率指标，通过SBM-DEA模型对中国商业银行的"三重效率"进行了测算分析，并运用SBM-Pearson分析法初步揭示了中国商业银行三重效率间的关系，之后再利用SBM-SUR计量模型对影响中国商业银行三重效率的因素作了进一步的探究。研究结果表明：（1）中国商业银行中股份制商业银行与城市商业银行在经济效率、社会效率上表现突出，而国有商业银行表现不佳。但是在环境效率方面，国有商业银行后来居上表现强劲。（2）中国商业银行间三重效率并不存在相互冲突，社会效率、环境效率与经济效率之间有着显著的正相关关系，但是并没有发现社会效率与环境效率之间存在显著的联系。（3）在经济效率方面，资产规模、运营年限、银行类型以及资产回报率均对其有着显著的正向影响；不同的银行类型对社会效率有着不同程度的显著影响；在环境效率方面，资产规模与银行类型也对其影响显著。     

A School Feeding Supply Chain Framework: Critical Factors for Sustainable Program Design

School feeding is an established development aid intervention with multiple objectives including education, nutrition, and value transfer. Traditionally run by international organizations in low‐income settings, school feeding programs have had a substantial impact in many less‐developed countries. However, recent rethinking by the World Bank and the World Food Programme has prompted a shift toward long‐term, sustainable solutions that rely more upon local resources, local capacity, and community participation. Supply chain management, which is critical to program delivery, is vital to developing a sustainable approach to school feeding. We propose a theoretical framework that identifies the internal and external factors that shape the supply chain and connects them to the objectives and performance measures of sustainable programs. Drawing upon supply chain management theory, current school feeding practices, and expert feedback, this article contributes to development aid logistics and program transitioning with a focus on sustainable program design. It aims to provide a comprehensive introduction to school feeding and relevant supply chain issues, a framework to identify sustainability problems in school feeding supply chains, and a starting point for further research on program design.