Research of Entropy-Based Overall Performance Measurement Model of Enterprises Technology Alliance

The performance measurement of enterprise technology alliances is complex. In this article, evaluation mechanism of entropy has been applied to it. Above all, performance connotation of enterprise technology alliance is defined from the aspect of self-organization theory. Then, on dynamic and systema -tical view, an entropy-based overall performance measurement model for technology alliance is established, using its life-cycle as the principal line, which includes initial condition evaluation, process evaluation as well as benefit evaluation. Finally, a case study is carried out to the demonstration of that model. The author believes that an improved performance measurement model based on alliance life-cycle would be practicability to alliance.     

Automated compound management systems: maximizing return on investment through effective life-cycle planning

Investing in an Automated Compound Management System (ACMS) is a major investment and it is therefore imperative that return on investment is maximized. This article will demonstrate how the life cycle of an ACMS can be managed effectively to drive system efficiency, reduce costs, and meet customer demand to maximize return on investment. The article will discuss: ? The long-term management approach taken for ACMS. ? The challenges faced after initial implementation and beyond. ? Major system enhancements made to the original system after implementation. ? Evaluate the benefits from adopting an active life-cycle management approach. ? The learning points gained through experiences.     

Modular design to support green life-cycle engineering

The severe competition in the market has driven enterprises to produce a wider variety of products to meet consumers’ needs. However, frequent variation of product specifications causes the assembly and disassembly of components and modules to become more and more complicated. As a result, the issue of product modular design is a problem worthy of concern. In this study, engineering attributes were added to the liaison graph model for the evaluation of part connections. The engineering attributes added, including contact type, combination type, tool type, and accessed direction, serve to offer designers criteria for evaluating the component liaison intensity during the design stage. A grouping genetic algorithm (GGA) is then employed for clustering the components and crossover mechanisms are modified according to the need of modular design. Furthermore, a reasonable green modular design evaluation is conducted using the green material cost analysis. According to the results, adjusted design proposals are suggested and materials that cause less pollution are recommended to replace the components with pollution values higher than those in the module. Finally, the authors use Borland C++ 6.0 to evaluate the system and clustering method. To illustrate the methodology proposed in this study, a table lamp is offered as an example.     

基于工序集中要求的加工中心夹具设计研究

根据加工中心机床的类型及实际应用现状,基于加工中心工序集中对夹具设计的要求,给出加工中心夹具设计的基本流程.通过分析加工中心夹具应满足多件装夹、多工位与多工序装夹的设计要点,首先提出采用一体多件装夹夹具设计方法,并给出企业相关夹具设计实例;其次结合某汽车零部件加工装夹的分析,提出采用多工位旋转定位夹具设计方法.为了提高夹具柔性,提出基于生命周期的加工中心夹具设计思想.     

建设工程全寿命周期造价管理模式探究

文章引入了建设工程全寿命周期的概念,对建设工程全过程工程造价管理活动模式进行了研究,指出了建设工程造价控制的重点在项目的决策阶段以及设计阶段。     

FCV氢源系统生命周期评价及其软件实现

合理选择燃料电池汽车氢源系统，是发展燃料电池汽车的前提。论文首先介绍了生命周期评价方法(LCA)，并将这一方法用于经济、能源和环境(EEE)领域。论文还阐述了如何进行EEE-LCA清单分析，继而进行EEE综合评价的步骤。根据：EEE-LCA的思想，编制了用于氢源系统方案综合评价的专用软件，方便了多方案的比较评价和敏感性分析。     

虚拟设计环境下多目标方案决策模型研究

以电子仪表类产品为具体应用对象，对虚拟原型逼真设计产品开发方法进行了介绍，建立了仪表产品虚拟原型逼真设计软件框架模型。在此基础上提出了虚拟环境下生命周期产品设计方案模糊多目标决策方法和数学模型。     

实现可持续建筑的几点思考

实现建筑可持续发展,必须在建筑的全寿命周期内,即在决策、设计和施工阶段全面贯彻可持续发展战略。大力发展绿色建造技术和完善政府法律法规是实现建筑可持续发展的必要条件和保障。     

基于LCCA与LCA的建设项目集成决策方法

针对如何降低建设项目的能源消耗和环境影响,保证建设项目的投资回报最优化,对全生命成本分析(LCCA)和全生命周期评价(LCA)的理论知识给予介绍,设计出建设项目的集成决策方法,为建设项目的投资决策过程提供定量化、科学化的依据,从而实现投资项目经济效益、环境效益和社会效益的有机结合。     

工程结构全寿命设计绿色指标体系构建

工程结构的绿色设计和绿色评价存在共性,在已建立的可持续发展工程结构全寿命周期设计理论体系基础上,参考国内外的绿色建筑评价体系,根据其共性构建了工程结构全寿命设计的绿色指标体系。该体系包含了三个指标,即以所处环境为对象的“环境评价指标”、以人为对象的“用户及社会满意度指标”和以区域和全球生态系统为对象的“可持续发展指标”。工程结构的全寿命设计传统指标是对现行设计方法的扩展和延伸,而绿色指标则是独立于传统设计方法体系之外的新体系,体现了全寿命设计方法的人文关怀和对自然的责任。为了将工程结构全寿命活动的环境和生态影响控制到最低水平,并使相关人群的利益最大化,通过指标分层、指标分类和权重分析,建立了建筑结构全寿命绿色设计指标体系。针对沿海高速公路桥梁结构的结构形式、用途和所处环境,构建了其全寿命设计绿色指标体系框架。