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.     

A multi-item supply chain with credit periods and weight freight cost discounts

It is possible to realize considerable savings by aggregating the replenishment of a variety of items in a multi-item supply chain. This joint multi-item replenishment policy has already been widely applied in a variety of industries. This type of policy may make it possible for the retailer to take advantage of transport economies of scale by the utilization of freight discounts for greater weight. In addition, a supplier will often extend forward financing to a retailer. In this paper, a multi-item supply chain with a credit period and weight freight cost discounts is considered. The retailer bears the freight costs, but the freight carrier provides freight-transport discounts that are positively related to the weight of the cargo transported. From both the individual and the channel perspectives, we deal with the dual problems of determining the ideal supplier credit period, and of the best way for the retailer to make multi-item replenishment and pricing decisions, while still maximizing profits. We outline the optimal properties and develop algorithms for solving the problems described, as well as discuss the impact of the freight cost discounts, the inventory holding cost, and the interest rate on the behavior of both parties.     

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。     

The cost,coverage and rollout implications of 5G infrastructure in Britain

Despite 5G still being embryonic in its development, there is already a quest for evidence to support decision-making in government and industry. Although there is still considerable technological, economic and behavioural uncertainty, exploration of how the potential rollout may take place both spatially and temporally is required for effective policy formulation. Consequently, the cost, coverage and rollout implications of 5G networks across Britain are explored by extrapolating 4G LTE and LTE-Advanced characteristics for the period 2020–2030. We focus on ubiquitous ultrafast broadband of 50 Mbps and test the impact of annual capital intensity, infrastructure sharing and reducing the end-user speed in rural areas to either 10 or 30 Mbps. For the business-as-usual scenario we find that 90% of the population is covered with 5G by 2027, but coverage is unlikely to reach the final 10% due to exponentially increasing costs. Moreover, varying annual capital intensity or deploying a shared small cell network can greatly influence the time taken to reach the 90% threshold, with these changes mostly benefiting rural areas. Importantly, simply by integrating new and existing spectrum, a network capable of achieving 10 Mbps per rural user is possible, which is comparable to the UK's current fixed broadband Universal Service Obligation. We contribute to the literature by quantifying the effectiveness of the spatial and temporal rollout of 5G under different policy options.     

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。     

A conceptualization of an organizational learning culture in international joint ventures

This paper focuses on organizational learning and innovation in international joint ventures (IJVs). Organizational learning addresses how organizations adapt to their environments, develop new knowledge, and then achieve competitive advantage. The authors present a conceptual framework that depicts the relationship between the parent organization(s)' climate, IJVs' organizational learning culture, innovativeness culture, innovation capacity, and IJV performance. Broadly, the IJV achieves superior performance by higher levels of innovativeness (openness to new ideas) and innovation capacity (capacity to implement innovations), which are associated with its organizational learning culture.     

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.     

Corporate-level influences on internal capital allocation: The role of financial analyst performance projections

Research contends that internal capital should be allocated in proportion to divisional performance, but scholars are often puzzled to find that managers do not adhere to this winner-picking approach. We argue this is because scholarship has not incorporated corporate-level factors that influence how corporate managers structure holistic capital allocation strategies. In this study, we build on the behavioral theory of the firm to focus on analyst performance projections for multidivisional corporations and how they inform corporate managers' allocation strategies. Specifically, we theorize corporate managers deviate from the winner-picking allocation approach owing to search-related behaviors stemming from projected performance below or above expectations. We further theorize about conditions that offer corporate managers opportunities to deviate from winner-picking, focusing particularly on multidivisional relatedness and asset durability.     

Examining a key corporate role: The influence of capital allocation competency on business unit performance

Research on the role of the corporate office in firm performance has focused on establishing how much performance variance can be attributed to a “corporate effect,” with little attention devoted to understanding how this influence occurs. In this study, we model capital allocation competency as a dynamic managerial capability and find that lower levels of allocation competency in the form of excess investment to business units with relatively poorer future prospects reduce business unit performance. We also find that market conditions affect performance implications of capital allocation—allocation competency is more salient in more competitive markets. These results enhance our understanding of how the corporate office influences business unit performance through its role in allocating capital across business units. Copyright © 2014 John Wiley & Sons, Ltd.     

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.