家用纺织品二次面料设计的魅力及开发研究

家用纺织品二次面料设计即家纺材质再设计,一改普通面料较为单一的风格,可以使设计师在现有的面料局限中找到更多的创意空间,体现了材质再设计所具有发挥想象力、提升综合搭配能力、开发创造潜能等魅力。文章探讨对材质再设计的表现方法,分析了开发研究实例。最后探讨了我国家用纺织品材质再设计面临的问题与解决的途径。     

企业过程再设计的概念及其实现途径

企业在实施ＣＩＭＳ的过程中，必然要对企业过程进行再设计。如何进行企业过程的再设计，是实现ＣＩＭＳ全面集成的重要研究内容，也是企业过程重构的核心研究内容。本文从ＣＩＭＳ全面集成的需求出发，基于ＢＰＲ思想，提出了企业过程的形式化表达形式，在此基础上，分析了企业过程再设计的概念和内容，提出了企业过程简化和集成的概念框架和途径，为研究ＣＩＭＳ企业过程再设计的方法提供了理论基础。     

A simulation model to study the impact of early information on design duration and redesign

In the design process, it is common to utilize early information from precedent activities to shorten the project duration instead of having to wait for the confirmed parameter values to arrive after full analysis. However, the estimated preliminary parameter might be different from that obtained after the full analysis. Consequently, redesign may be needed in downstream activities to correct this discrepancy. Total amount of induced redesign may adversely impact loss of productivity and overall design completion. Furthermore, redesign requires additional resources which may exaggerate the project completion for a project with limited resources. This study presents a simulation model to describe the effect of utilizing early information on redesign and total design duration. The paper characterizes the reduction in project duration while accounting for the impact of redesign through sensitivity studies of the parameters of the simulation model. The sensitivity studies would provide valuable insight that project managers can take into account when utilizing early information in design.     

Value creation dynamics in a project alliance

Project alliance requires all parties to work together in good faith, share project risks, and make unanimous decisions for the betterment of the project. A key feature of successful implementation of a project alliance is a focus on value creation and value for money. This paper proposes a qualitative system dynamics model to specify and explain dynamics of value creation processes in the context of project alliance. By synthesizing the existing literature and reports on project alliancing, this paper identifies four processes that have a strong influence on the value created in the project alliance context: work progression, rework, redesign and innovation, and rescheduling. In addition, we show how these value creation processes are interrelated and evolve over time. The effectiveness of these processes is influenced by the capability and motivation of the project alliance partners to discover works that do not fully utilize the available resources, and make quick decisions to capture these benefits.     

Discussion on “Second-Guessing Clinical Trial Designs” by Jonathan J. Shuster and Myron N. Chang

Abstract

Redesigning previously conducted clinical trials is a useful tool for better determining the impact of an alternative design. Shuster and Chang suggest the redesign of clinical trials that do not use sequential monitoring by imposing a sequential monitoring structure and determining what would have happened had such a structure been employed. However, early stopping decisions are complex and involve are intimate understanding of ethical, logistical, and statistical issues. “Second-guessing” a data and safety monitoring board is dangerous without this intimate understanding.     

Visual specification of measurements and redesigns for domain specific visual languages

Ensuring model quality is a key success factor in many computer science areas, and becomes crucial in recent software engineering paradigms like the one proposed by model-driven software development. Tool support for measurements and redesigns becomes essential to help developers improve the quality of their models. However, developing such helper tools for the wide variety of (frequently domain specific) visual notations used by software engineers is a hard and repetitive task that does not take advantage from previous developments, thus being frequently forgotten.In this paper we present our approach for the visual specification of measurements and redesigns for Domain Specific Visual Languages (DSVLs). With this purpose, we introduce a novel DSVL called SLAMMER that contains generalisations of some of the more used types of internal product measurements and redesigns. The goal is to facilitate the task of defining measurements and redesigns for any DSVL, as well as the generation of tools from such specification reducing or eliminating the necessity of coding. We rely on the use of visual patterns for the specification of the relevant elements for each measurement and redesign type. In addition, SLAMMER allows the specification of redesigns either procedurally or by means of graph transformation rules. These redesigns can be triggered when the measurements reach a certain threshold.These concepts have been implemented in the meta-modelling tool AToM³. In this way, when a DSVL is designed, it is possible to specify measurements and redesigns that will become available in the final modelling environment generated for the language. As an example, we show a case study in the web modelling domain.     

基于性能的LUT结构的FPGA的再设计算法

本文提出一个基于性能的LUT结构的FPGA的再设计算法,该算法采用特征函数以及对原布尔网络进行相应的约束实现电路的再设计。因为不改变网络的拓扑结构,从而避免了在再设计过程中重新考虑电路的时延和布局布线结果。     

大型风能发电机组叶片再设计系统研究

叶片的外形设计和翼型的选择是影响风力机性能和产能效率最为核心的技术。提出了一种大型风能发电机组叶片再设计的原理和方法,对叶片模型进行剖析,寻找几何特征,探索制约叶片形状的基本因素,确定叶片截面参数计算公式,利用所开发的叶片翼型自动生成系统,完成了叶片的再设计,并得到了实际应用。结果表明：这种再设计方法满足产品设计需求。     

Product Evolution: A Reverse Engineering and Redesign Methodology

New products drive business. To remain competitive, industry is continually searching for new methods to evolve their products. To address this need, we introduce a new reverse engineering and redesign methodology. We start by formulating the customer needs, followed by reverse engineering, creating a functional model through teardowns. The functional model leads to specifications that match the customer needs. Depending upon required redesign scope, new features are possibly conceived, or not. Next, models of the specifications are developed and optimized. The new product form is then built and further optimized using designed experiments. An electric wok redesign provides an illustration. The methodology has had a positive impact on results by using a systematic approach, both within design education and industrial applications.