基于产品寿命次数的闭环供应链生产优化问题研究

本文研究了单一厂商制造/再制造集成系统的多期生产优化问题.首先,基于闭环供应链的全生命周期思想,通过引入产品寿命次数的概念构造了不超过产品寿命次数而能够进行再制造的回收产品与新制造产品之间的数量关系;接着,验证了将可再制造产品全部用于再制造时能够实现利润最大化的目标;然后,给出了几个有关解的性质;最后,通过算例对本文模型的性质和规律作进一步分析.     

A fourth order rotatable design in three dimensions

The necessary and sufficient conditions for a set of points to form a rotatable design of order four have been given by Patel and Arapkoske (1985). One such set of 104 points for three factors which satisfies these conditions is given in this paper.     

A frame of reference for strategy development

Strategy development in today's volatile business environment demands increased management concern with fundamental issues which go beyond the balance sheet and the income statement to deal with the proper positioning of the corporation and its units to achieve long-term profitable survival. This is well understood. On the other hand, it is equally clear that management capacity—in terms of man hours of talent available—is the most important resource of any corporation and is also limited. In this article the authors set out to develop a frame of reference for analysing the corporation, its individual business and its competitors. Their objective is to provide management with the tools they need to deploy their creative entrepreneurial talent more efficiently by focusing on strategically relevant issues, using guidelines based on the ever-increasing body of research available today.     

多标准决策表中发现概率规则的变精度粗糙集方法

用优势关系代替不可分辨关系,本文提出了一种可以从多标准决策表中获取概率规则的扩展变精度粗糙集模型,该模型能够处理多标准决策表中可能的不一相容性,获取由偏好对象组成的概率决策规则集,并导出事例决策系统的偏好模型。研究结果表明:基于优势关系,从多标准决策表中获取的最小概率规则集,使用的条件数量较少,且导出规则的数量较少、较强。     

A look at an interactive classroom-based drug abuse prevention program: interactive contents and suggestions for research

Interactivity has been shown to be a critical element of effective drug abuse prevention programs. This study examined the contents of Project Towards No Drug Abuse, a program that has revealed strong effects only when delivered in a highly interactive version. Types of teacher and student interactive messages were identified. It is speculated that explicit action on the part of the teacher to have students make statements and ask questions of one another may be the essence of effective drug education program delivery. Suggestions for future research on interactivity were made.     

Technological forecasting for power generation—A study using the Delphi technique

Technological forecasting is a powerful technique for obtaining insights into possible futuristic innovations. The forecast can provide a basis for long-range planning and policy formulation in organizations. Technological forecasting, though a useful and powerful tool, has yet to be applied widely in developing countries. This paper outlines a forecasting exercise carried out by the authors using the Delphi technique in India. The focus of the exercise was on electric energy generation and transportation. The findings have been compared with other available studies in India in similar areas. The paper also illustrates how additional information inputs can mould such forecasts. For this purpose, the authors have compared the results of the current study with the results of a similar study carried out in the same organization 8 years earlier. The change in perception regarding the timing of certain items is very evident and the underlying reasons have been given.     

基于再制造的多周期闭环营销投入及定价策略

针对再制造产品市场化艰难和缺少旧件来源的问题,结合"互联网+"战略提出了促进旧件回收与再制造零部件销售的闭环营销体系;闭环的营销投入可以同时发挥回收努力效应（增加单周期合格旧件回收量）和多周期广告效应（提升消费者对品牌的长期绿色认知度）,建立了多周期的闭环营销投入水平决策和产品差异定价模型并得到了最优决策;结合我国汽车零部件市场的现状,针对无闭环营销、初级闭环营销、闭环营销策略升级三种模式展开算例分析和对比。研究表明：闭环营销可以显著提高供应链总收益,营销策略的升级应考虑到回收努力效应和多周期广告效应的匹配,针对长生命周期的产品,闭环营销策略应经常调整。本研究结论有助于进一步完善再制造闭环供应链及营销理论基础。     

Board of director efficacy and firm performance variability

While academic researchers continue to debate the effect of board independence in increasing performance, its efficacy could also be reflected in whether firm performance is made more stable. Board governance activities are a constellation of actions aimed at managing agency costs and ensuring the viability of a company over time. The efficacy of such actions would, therefore, be reflected in a distal outcome, specifically, in lower firm performance variability. Boards that can control agency costs and limit both underinvestment and overinvestment would reduce a firm's deviation from its mean performance trajectory. Using a longitudinal sample of publicly traded companies in the United States, we find that board stability, board resource provision, and CEO influence are negatively associated with performance variability. Board independence is not associated with performance variability. With increasing board independence, greater board stability and greater CEO influence are negatively associated with performance variability, however, greater board resource provision is not associated with performance variability.