The joint replenishment and freight consolidation of a warehouse in a supply chain

We have developed joint replenishment and consolidated freight delivery policies for a third party warehouse that handles multiple items, which have deterministic demand rates in a supply chain. Two policies are proposed and mathematical models are developed to obtain the optimal parameters for the proposed policies. Four efficient algorithms are presented to solve the mathematical models for the two policies. The performances of the two policies with the parameters obtained from the proposed algorithms are then compared with the common cycle approach for 1600 randomly generated problems. The results show the robust performance of the proposed algorithm for both policies.     

A novel differential evolution algorithm for joint replenishment problem under interdependence and its application

In this paper, we propose a new differential evolution (DE) algorithm for joint replenishment of inventory using both direct grouping and indirect grouping which allows for the interdependence of minor ordering costs. Since solutions to the joint replenishment problem (JRP) can be represented by integer decision variables, this makes the JRP a good candidate for the DE algorithm. The results of testing randomly generated problems in contrastive numerical examples and two extended experiments show that the DE algorithm provides close to optimal results for some problems than the evolutionary algorithm (EA), which has been proved to be an efficient algorithm. Moreover, the DE algorithm is faster than the EA for most problems. We also conducted a case study and application results suggest that the proposed model is successful in decreasing total costs of maintenance materials inventories significantly in two power companies.     

On the determinants of non-market strategy: The separations mechanism and cost shifting in the telecommunications industry

This study examines the relationship between performance levels and the levels of cross-subsidy attained by local exchange carriers in the United States telecommunications industry. These cross-subsidies have been obtained by firms via their engagement in a separations mechanism, based on a cost allocation process, which telecommunications sector regulatory authorities use. Non-market strategies have assumed primacy in the activities of several sectors world-wide. Thus, understanding non-market strategic choices is important in the analysis of firms’ behavior and performance. Active engagement in the separations process is an important non-market strategy in the telecommunications industry, as a firm relatively successful in this activity can gain large cross-subsidies. The analysis establishes that less profitable firms obtain greater cross-subsidies. Once the profitability variable is decomposed into its two main components, which are productivity and price recovery, the impact of the profitability variable reduces. Firms which are relatively unproductive, as well as those unable to recover higher output prices, obtain relatively greater cross-subsidies. These results are inconsistent with the postulates of the strategic cost-allocation and behavior literatures but are consistent with x-inefficiency and rent-seeking perspectives of firms’ strategic actions.     

Detailed cost estimating in the automotive industry: Data and information requirements

The automotive industry operates in a very competitive market which requires controlling product costs, improving the product quality and shortening the development lead time. Cost estimation requires quality data and information, therefore this research project identified several issues that hinder this activity, namely a lack of resources and information acquiring and validation difficulties. This research paper presents the various data and information requirements for detailed cost estimating in automotive industry. The research project has identified the common cost estimation process model within the identified industry sector. The study identified the types of data and information requirements for cost estimating. It has also constructed the relevant data infrastructure as the basis for a Web Portal, which is the physical presentation of the information infrastructure. Multiple sources of data collection techniques were employed to identify the types of data needed for detailed cost estimates within a manufacturing company. These techniques include participant observation, semi-structured interviews, process models and document analysis of six different UK based automotive companies. Methods of process modelling like IDEF3 and knowledge capture technique known as X-Pat (eXpert Process Knowledge Analysis Tool) were employed in this study.This study makes several contributions concerning both conceptual and practicable information issues that have long vexed detailed cost estimating practices in the automotive industry. The study conceptually defines the detailed bottom-up information (i.e., individual cost elements and the links between them) needed for an accurate estimate of cost, and shows why each element of information is needed and where it fits into the cost model. To respond to the practicable information vexations, the study shows where to find the necessary cost information and proposes a validation method. The research creates useful knowledge in the form of an improved understanding of information requirements for cost estimates. The benefits to the industry of better cost estimates based on this research at the conceptual design stage include improved cost control and enhanced ability to adjust to anticipated market trends.     

谈设计阶段的工程造价控制

本简要地阐述了设计阶段的造价控制是工程造价全过程控制的关键性环节，并介绍了设计阶段造价控制的几种常用方法。     

企业环境成本特点及管理方法探析

本文在对企业进行环境成本管理的必要性和环境成本的特点进行分析的基础上,指出我国企业目前在环境成本管理工作中存在的主要问题,并认为作业成本法与全生命周期成本法是环境成本管理较好的方法,进而对两种方法在企业环境成本的具体运用中进行了比较。     

The interplay of task allocation patterns and governance mechanisms in industrial distribution channels

Task allocation involves the placement and performance of distribution subtasks among participants on an on-going basis in the channel. The authors offer an extended conceptualization of task allocation and examine its interplay in varying environmental conditions with shared decision making, pseudo-vertical integration, and dependence. They test the hypothesized relationships with three-stage least squares regression on a sample of farm equipment dealers. Results show that contractually based pseudo-vertical integration facilitates task allocation and, in turn, enlarged dealer task allocation patterns result in pseudo-vertical integration. Firm size has a significant influence on pseudo-vertical integration. In turbulent environments, dealers rely more heavily on shared decision making to allocate tasks than they do in stable environments. Although dependence increases pseudo-vertical integration, its effects on other factors are minimal. The results suggest that task allocation is an important construct that relates to several commonly observed channel characteristics.     

An improved algorithm and solution on an integrated production-inventory model in a three-layer supply chain

Ben-Daya et al. (2010) established a joint economic lot-sizing problem (JELP) for a three-layer supply chain with one supplier, one manufacturer, and multiple retailers, and then proposed a heuristic algorithm to obtain the integral values of four discrete variables in the JELP. In this paper, we first complement some shortcomings in Ben-Daya et al. (2010), and then propose a simpler improved alternative algorithm to obtain the four integral decision variables. The proposed algorithm provides not only less CPU time but also less total cost to operate than the algorithm by Ben-Daya et al. (2010). Furthermore, our proposed algorithm can solve certain problems, which cannot be solved by theirs. Finally, the solution obtained by the proposed algorithm is indeed a global optimal solution in each of all instances tested.     

The impact of different fibre access network technologies on cost,competition and welfare

Using a novel approach to the evaluation of new network technologies that combines an engineering cost model with a differentiated multi-player oligopoly model with wholesale access regulation this article evaluates the choice among different Fibre-to-the-Home (FTTH) architectures. The cost modelling relies upon an engineering bottom-up approach that feeds into a competition model. For addressing competition the pyramid model was chosen, which is an extension of the Hotelling model to multiple firms/services. The paper solves for price setting Nash equilibria between an incumbent, wholesale-access-based entrants and cable as an additional fully integrated network competitor. Welfare tradeoffs are highlighted with respect to cost differences and QoS differences between the various FTTH architectures and between the modes of regulation. According to the analysis architectures that can be unbundled (and that allow for greater speeds) outperform, from a social welfare perspective, architectures that (realistically) allow only for bitstream access.     

Types and functions of social relationships in the organizing of an international joint venture

This paper examines the use of social relationships in the organizing of a business network in the case of an international joint venture (IJV) developing over time. The organizing process and the multicultural setting of the international joint venture emphasize the actions of and interactions between individuals from various organizations. The IJV-managers' use of their social relationships in business organizing is explored through analysis of narratives of IJV-managers in a longitudinal single case to provide empirically grounded theory. From the in-depth interviews with IJV-managers the business relationships are identified as characterized by four possible levels of interpersonal relationships whose type influences the functions of the relationships and visa versa. One business relationship may contain only one or many of these interpersonal levels and an effective business relationship contains the appropriate interpersonal level for the business issue at hand.     

Procurement cost reduction for customized non-critical items in an automotive supply chain: An action research project

This paper presents the processes involved in organizing a buyers' fair, a fair where first- and second-tier suppliers of the automotive industry make known their buying requirements for non-critical items to SMEs (small and medium-sized enterprises). The fair allowed the procurement process of LCs (large companies) and the prospecting process of SMEs to be faster and less-expensive. The fair was the result of an action research project performed by the researchers in partnership with the Brazilian Federation of Industries.     

Research notes and communications factors in the instability of international joint ventures: An event history analysis

This study uses Event History methodology to examine factors that may contribute to the instability of joint ventures between U.S. multinationals and foreign companies. Using joint venture contract renegotiation as a proxy for instability, it finds statistically significant support for hypotheses that joint ventures are more unstable when partners start out with uneven shares of equity and when the contracts have been renegotiated before. Contract renegotiation is also more likely in relatively open economies than in countries that impose restrictions on direct investment.     

Choice of ownership mode in joint ventures: An event history analysis from the automotive industry

Inter-firm partnerships continue to be a major trend in the B2B context. Firms seek collaborative ventures to enter foreign markets, combine resources, share costs and risks, and build synergies in an increasingly competitive environment. Accordingly, the impacts of firm and host country characteristics on the selection of entry mode have been extensively studied in the literature. Nevertheless, most of these studies regard all entry modes as feasible alternatives for firms, which is rarely the case in practice. Instead, the number of entry modes available to a firm is more likely to be limited by the firm's assets and the context of the host country. As such, these contingencies, coupled with the idiosyncrasies of each entry mode, necessitate more focalized inquiry in the entry mode literature. Drawing from the OLI framework, this study zeroes in on international joint ventures (IJVs) and analyses the impact of ownership and location advantages on firm's decision about the level of control (i.e., internalization level) in an IJV in a given country. Results indicate a positive relationship between the ownership advantages and the level of control. It is also found that firms tend to favor higher control mode where the host country provides better locational advantages.     

The shaping of inventory systems in health services: A stakeholder analysis

Although many studies have addressed the diagnosing and redesign of inventory systems in an industrial setting, the field of operations management seems to lack a thorough understanding of the process of shaping inventory systems in a health care setting. In this article, a contribution is made to fill this gap by exploring the process of reshaping a hospital inventory system of medicines by means of an exploratory case study. In doing so, we concentrate on the question how the outcomes of this process are affected by the different stakeholders involved. Our case study indicates that decisions made during this reshaping process are heavily influenced by the dynamics of the relationships and interactions between the stakeholders involved in the project. Based on our case study there are also some strong indications especially in a health care setting, the existence of multiple stakeholders having a multi-goal focus regarding the inventory system can have a strong influence on the outcomes of inventory projects. For project managers it is important to be aware of these characteristics and circumstances in order to help health service organisations to develop and use inventory systems more effectively.     

Product price and performance level in one market or two separated markets under various cost structures and functions

Market characteristics, including intrinsic demand and customer sensitivity on price and product performance level, are distinct at different markets. Comparisons of various product development strategies in one market or two geographically separated markets are conducted for three classes of products: development intensive products (DIPs) with constant unit cost, marginal cost-intensive products (MIPs) with constant fixed cost, and marginal and development intensive products (MDIPs) with non-constant unit cost and fixed cost. Results show that larger demand size, less customer sensitivity on price and/or more sensitivity on performance level lead to more profit, a higher sale price and a not-lower product performance. The customer reservation or the saturation performance level should be generally adopted though the optimal performance level does exist occasionally. Unit cost and/or fixed cost must increase in performance at an increasing rate for the existence of one optimal performance level. Due to the impact of demand size, one high-end (low-end) MDIP or DIP could be introduced into one low-end (high-end) market at a different price if the demand size is significantly large in the low-end market. For DIPs, offering one niche high-end product is not worse than offering the low-end product into two markets. For MIPs with negligible fixed cost, the product line strategy is not worse than the standard product development strategy. Additionally, the product cost reduction approach adopted in one product line has significant effects on the best product development strategy and sequence.     

Conflict-coordination learning in marketing channel relationships: The distributor view

Although a fairly large body of literature exists on channel conflict management, little research has been done from an interorganizational conflict-learning perspective. This study explores how channel members can use conflict-coordination learning (CCL), as a conflict resolution mechanism, which leads to improved capabilities, which in turn can enhance co-created value in marketing channel relationships from a distributor point of view. Drawing on both a resource-based view of the firm, an absorptive capacity perspective, and an interorganizational learning approach, we propose that conflict values (positive conflict attitudes and avoidance of conflict behaviors) can be viewed as firm resources that directly influence CCL, which in turn can enhance co-created value (joint marketing strategy quality and joint profit performance). To explore these issues, we developed and tested our hypotheses with data from 101 distributors within the food industry in Taiwan. As predicted, we find that positive conflict attitudes are positively related to CCL, and that avoidance of conflict behaviors is negatively related to CCL. Furthermore, the results indicate that joint marketing strategy quality mediates the relationship between CCL and joint profit performance. Specifically, under high positive conflict attitudes, CCL strongly appears related to joint marketing strategy quality.     

首尔图书馆新建项目全寿命周期设计阶段成本管理中VE的应用

以韩国首尔图书馆新建项目的全寿命周期设计阶段成本管理中VE的应用为例,着重论述其在建设项目的主体结构和建筑外墙装饰设计方案优选中的应用,并结合权重分析和敏感度分析使方案优选更具科学性,为提高图书馆建设项目的科学决策提供了部分参考,实际应用表明其全寿命期中设计阶段应用价值工程进行成本管理,可以优化设计,从而使工程设计质量得以提高,同时也降低建设成本、增强市场竞争能力,赢得业主的信任。     

The role of program fairness in asymmetrical channel relationships

Managing distributor compliance with manufacturer-initiated programs is critical to both program success and relationship enhancement. This study examines how a manufacturer might better motivate distributors with varying levels of dependence. Previous research suggests that two variables influence distributor compliance: economic incentives and dependence dynamics. Drawing from fairness heuristic theory, this study extends previous research by investigating the role of fairness in affecting compliance and long-term relationships. The authors observe the contingent effect of fairness along various levels of distributor dependence. In the context of a naturally occurring program, the authors collect data from a focal manufacturer's distribution channel and find that (1) fairness perceptions have significant impacts on both compliance and relational outcomes, (2) the efficacy of program fairness declines as distributor dependence increases, and (3) distributor dependence increases the effect of economic incentives on compliance. The authors discuss the theoretical and managerial implications of these findings.