摘要:

In this paper we discuss the economic evaluation of a supply chain innovation. We look at a situation in which a single manufacturer and a single distributor consider relocating assets and reengineering processes, in order to reduce total assets and total costs in the supply chain. The selling price between the manufacturer and distributor needs to be adjusted to reflect the new costs and asset levels. We investigate the price adjustment needed to maintain the ROA (Return on Assets) of both companies and to yield a nonnegative NPV (Net Present Value) for both companies. We identify conditions under which ROA and NPV yield the same results, such as the absence of implementation costs. We also demonstrate that the minimum price required by the manufacturer may lie above the maximum price acceptable for the distributor. Then the price range is empty and companies will not be able to find a price adjustment that results in a nonnegative NPV and nondecreasing ROAs for both companies.

ISSN:0013-791X    

DOI:10.1080/00137910008967549

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

After exhausting all “pollution prevention pays” opportunities, further efforts towards environmental protection often engender some type of cost to the manufacturer. Then, designers must weigh tradeoffs between environmental impacts and equally pressing needs to reduce costs, improve product quality, and reduce cycle time: all while meeting customer demands, which are the driving force behind the design process. Although there is a growing market for “green” products as customers' desire to be environmentally responsible increases, it is extremely difficult to accurately assess the customer's actual willingness to pay for environmental protection. This paper first briefly reviews methods for assessing customer preferences. Then, it presents a decision model for use by design engineers to assist in making these tradeoffs between cost, quality, and environmental impact in which customer preferences can be reflected in weighting factors assigned by the design engineer. Qualitative HOQ information is used as a starting point to derive a mathematical programming formulation for multiobjective optimization. Finally, an illustrative example for printed circuit board assembly is provided.

ISSN:0013-791X    

DOI:10.1080/00137910008967550

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The manufacturing environment is becoming increasingly dynamic with upsurges in electronic-commerce, supply chain management, forecasting, and procurement and resource planning. It also includes trends toward more process data acquisition and analysis, shorter production runs, and more stringent quality requirements. These drivers lead to an opportunity for companies to collect and use information to identify changes that will affect their manufacturing systems. In conjunction with an industry partner who produces home fashion products, we developed a case-study that highlights four major manufacturing transitions: new product introduction; moving a product from research and development (R&D) to commercialization: new plant location; and starting or restarting production of existing products. These types of changes cross many levels of the operation - including the product level, plant level, and organizational level - and typically present significant operational challenges. We use this case-study to motivate the theoretical and applied research needed to support a real option framework for system changes in manufacturing. The key elements of our framework are to quantify manufacturing changes, develop a real option model for these activities, value the options to identify the best scenarios, and integrate these elements so that we can monitor and manage the overall process. The advantage of this approach is that it allows us to directly incorporate a market driven perspective, tying the manufacturing operations with the organizational economic goals.

ISSN:0013-791X    

DOI:10.1080/00137910008967551

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Biofilters comprise a packed bed of (often compressible) natural materials containing immobilised micro-organisms which digest the volatile organic compounds (VOC) in air streams. This paper surveys the current literature about their design and shows how an economically optimal scheme to redistribute the bed periodically may be obtained. In addition, an outline of an optimal design model is presented.

ISSN:0013-791X    

DOI:10.1080/00137910008967552

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The US Army has relied heavily on helicopter support for more than 30 years. These aircraft have been used for a variety of purposes, with the most widely identified category being the utility, or general-purpose transport, mission area. Currently, the US Army is confronting the problem of managing an aging equipment fleet (its helicopters) in the face of significant budgetary constraints, a very large-scale fleet replacement problem. By the nature of its business, the US Army is not working toward a desired profit margin, but it must maintain a level of military capability to meet its national defense obligations. The US Army recently commissioned the Utility Helicopter Fleet Modernization Analysis to determine the most cost and operationally effective strategy for fleet replacement or modernization. This case study presents a synopsis of how multi-criteria decision analysis techniques were integrated with total cost of ownership considerations to develop a multi-billion dollar equipment modernization strategy, a strategy that is being implemented by the US Army today.

ISSN:0013-791X    

DOI:10.1080/00137910008967553

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor