基于构件/构架可复用串行通信开发方法的研究

通过对构件 /构架理论和软件复用理论应用于串行通信的研究 ,提出一种通用的可复用的串行口通讯构架的开发方法 ,从而可有效地提高串行口通信程序的可复用性和可靠性 ,缩短程序的开发周期。     

An integrated genetic analysis microfluidic platform with valves and a PCR chip reusability method to avoid contamination

Clinical diagnostics and genomic research often require performing numerous genetic tests. While microfluidic devices provide a low-cost alternative to such demands, integrated microfluidic devices are fabricated using expensive technology not always affordable for single use. However, carryover cross-contamination (CXC) concerns (i.e. either false positive or false negative PCR data) in PCR chips prevent reuse, defying much of the advantages of miniaturized systems developed using expensive MEMS processing. In this work, we present an integrated and reusable PCR–CE glass microfluidic chip capable of multi-chamber PCR and sequential CE, with emphasis on a unique chip reusability approach to avoid CXC. For reliable PCR, the surface of the chamber is re-configured from its virgin hydrophilic (CA < 20°) to hydrophobic (CA > 110°) by silanization. To then extend this silanization method as a chip reusability technique, the silanization coating is ‘stripped and re-silanized’ (SRS) to create a fresh coating prior to each successive PCR run. Experimental confirmation of the effectiveness of SRS method in avoiding the CXC is demonstrated using plasmid DNA and HIV-1 infected DNA samples. We also present passive plug microvalves incorporated in the chip to enable fluid/vapor retention during the PCR and controlled fluid flow from the PCR chamber to the CE section for further analysis.     

Refinement preserving approximations for the design and verification of heterogeneous systems

Embedded systems are electronic devices that function in the context of a real environment, by sensing and reacting to a set of stimuli. Because of their close interaction with the environment, and to simplify their design, different parts of an embedded system are best described using different notations and different techniques. In this case, we say that the system is heterogeneous. We informally refer to the notation and the rules that are used to specify and verify the elements of heterogeneous systems and their collective behavior as a model of computation. In this paper, we consider different classes of relationships between models of computation and discuss their preservation properties with respect to the model's refinement relation and composition operator. In particular, we focus on abstraction and refinement relationships in the form of abstract interpretations and introduce the notion of conservative approximation. We show that, unlike abstract interpretations, conservative approximations preserve refinement verification results from an abstract to a concrete model while avoiding false positives. We also characterize the relationship between abstract interpretations and conservative approximations, and derive necessary and sufficient conditions to obtain a conservative approximation from a pair of abstract interpretations. In addition, we use the inverse of a conservative approximation to identify components that can be used indifferently in several models, thus enabling reuse across models of computation. The concepts described in this paper are illustrated with examples from continuous time and discrete time models of computation.     

软件开发复用技术在SCOU NIX环境开发中的应用

本文主要讨论了在UNIX环境下开发应用软件时,如何使用软件开发复用技术减少重复开发、提高开发效率,借此来解决软件开发劳动重复浪费的问题。     

支持复用的汽车外观造型设计系统研究与实践

计算机辅助汽车外观造型设计领域的构件复用率低、智能化程度不高等问题引起了越来越多研究者的关注。为解决此问题，该文提出了新颖的支持复用的汽车外观造型设计系统的设计思想，根据该系统的特点，对汽车构件的设计、存储以及构件库的组织、结构与管理使用，也进行了初步研究与实践。     

The state of the art in automated requirements elicitation

ContextIn large software development projects a huge number of unstructured text documents from various stakeholders becomes available and needs to be analyzed and transformed into structured requirements. This elicitation process is known to be time-consuming and error-prone when performed manually by a requirements engineer. Consequently, substantial research has been done to automate the process through a plethora of tools and technologies.ObjectiveThis paper aims to capture the current state of automated requirements elicitation and derive future research directions by identifying gaps in the existing body of knowledge and through relating existing works to each other. More specifically, we are investigating the following research question: What is the state of the art in research covering tool support for automated requirements elicitation from natural language documents?MethodA systematic review of the literature in automated requirements elicitation is performed. Identified works are categorized using an analysis framework comprising tool categories, technological concepts and evaluation approaches. Furthermore, the identified papers are related to each other through citation analysis to trace the development of the research field.ResultsWe identified, categorized and related 36 relevant publications. Summarizing the observations we made, we propose future research to (1) investigate alternative elicitation paradigms going beyond a pure automation approach (2) compare the effects of different types of knowledge on elicitation results (3) apply comparative evaluation methods and multi-dimensional evaluation measures and (4) strive for a closer integration of research activities across the sub-fields of automatic requirements elicitation.ConclusionThrough the results of our paper, we intend to contribute to the Requirements Engineering body of knowledge by (1) conceptualizing an analysis framework for works in the area of automated requirements elicitation, going beyond former classifications (2) providing an extensive overview and categorization of existing works in this area (3) formulating concise directions for future research.     

面向大型激光装置的分布式控制软件框架设计

基于对大型激光装置结构、设备组件及其监控功能的分析和抽象,提取出全装置通用的软件设备及功能组件,设计了面向大型激光装置的分布式控制软件框架。作为集中控制系统软件构建的基础,该软件框架已应用于神光Ⅲ主机的集中控制系统,在提高软件复用度、减少软件集成调试时间、提高系统设计开发集成效率和总体性能方面起到了较好的作用。     

Developers, regeneration and sustainability issues in the reuse of vacant industrial buildings

The outcomes from a survey of developer and related organizations active in a local industrial property market in mid-1998 are reported in respect of the use and reuse of industrial buildings. The discussion focuses on both refurbishment and reuse and new build sectors, and draws out some evidence on sustainability issues. Despite a relatively limited understanding of sustainability as a concept, developers are found to have a positive attitude to reuse when conditions allow it. Indeed, those more actively involved in reuse have sometimes engaged in a variety of practical, sustainable solutions to refurbishment needs. Most are open to influence on questions of good practice and sustainability. This all suggests that legislation designed to turn the development and construction industry towards brownfield opportunities and the sustainable reuse of existing infrastructure is likely to induce a favourable response. Cet article presente les resultats, a la mi-1998, d'une etude menee par des promoteurs et des entreprises du secteur actives sur le marche de la propriete industrielle locale sur l'utilisation et la reutilisation des batiments industriels. Le debat porte, pour l'essentiel, sur la remise en etat, la reutilisation et les constructions nouvelles; les conclusions mettent en lumiere des evidences en ce qui concerne les questions de durabilite. Malgre une comprehension relativement limitee du concept de durabilite, il s'avere que les promoteurs ont une attitude positive en ce qui concerne la reutilisation de batiments lorsque les conditions le permettent. Certes, les plus actifs dans le secteur de la reutilisation se sont parfois orientes vers l'option de la remise en etat en proposant une grande variete de solutions pratiques et durables. La plupart d'entre eux restent ouverts aux questions de bonne pratique et de durabilite. Tout cela suggere que la legislation visant a orienter les promoteurs et les entreprises du batiment vers des opportunites d'investissement dans des installations existantes et vers la reutilisation durable d'infrastructures existantes est susceptible d'entrainer une reponse favorable.     

Ozone in the United States of America -- State-Of-The-Art

Applications for ozone in the United States have evolved through a lengthy maturation process, which began with drinking water treatment (taste/odor/color removal) in the early 1900s, and grew slowly until acceleration began in the mid-1980s. Although deodorization became a stable market in the 1960s-1970s, these applications were small, for the most part. One of the largest uses for ozone is oxidation of process chemicals in the chemical industry, which began in the USA about the 1940s, and subsequently has spread worldwide. Today, thanks primarily to environmental regulatory pressures which began to impact ozone in the mid-1980s, ozone now is used increasingly in the USA for drinking water treatment and for some municipal and industrial wastewater applications. The U.S. Environmental Protection Agency (EPA) has recognized the growing importance of ozone (> 200 drinking water plants use ozone today), and has appointed IOA representatives to two of its regulatory development committees as stakeholders. Several U.S. cities have installed or are installing wastewater treatment processes for potable reuse purposes, which include the use of ozone. Three full-scale U.S. pulp bleaching plants use tons/day quantities of ozone. Smaller applications for ozone include water treatment for cooling tower waters (biofouling control), swimming pools and spas, marine aquaria, bottled water disinfection and maintenance of high purity waters in the pharmaceuticals and electronics industries. A new application for ozone is in commercial laundries to reduce energy costs and replace chemicals. In mid-1997, a public declaration was made by an expert panel that ozone is Generally Recognized As Safe (GRAS) for contact with foods. This declaration opens the door for ozone to be used in U.S. food processing industries. U.S. research scientists and engineers are at the forefront in studies which define the technical aspects of ozone technologies in a variety of applications employing advanced oxidation, including the treatment of hazardous wastes, groundwater remediation, and process water recovery and reuse in the semi-conductor industry.     

与创意产业结合的珠三角地区旧工业区再利用研究

该文通过对珠三角地区现有的与旧工业厂房改造相结合的创意产业的研究,结合国内外的实际经验,对珠三角地区与创意产业相结合的旧工业区进行了分类,并分析了旧工业区建筑与创意产业结合的条件,提出适合珠三角地区与创意产业相结合的旧工业建筑再利用的规划布局与建筑改造模式。