一种模块化扩容程控交换机控制方案

本文概述了一种利用公共总线，公共存储器，环路控制模块间轮循占用公共总线，进行多媒模块计算机间通讯的控制方案。说明了实现此方案的两种类型模块：交换模块和管理模块的硬件结合各部分的功能和作用及软件实现的概况，此方案在200门至2000模块化扩容程控交换机设计中得到理论和实验的论证，并在排队控制系统中有所应用。     

进程通信机构在UNIX V7中的实现

对于操作系统来说,进程间通信(IPC)是它必不可少的功能。本文首先分析了UNIX V7中现有的IPC功能,指出了其不足之处,作为实现IPC的一种尝试,我们在UNIX第七版内核中实现了基于Socket的进程通信机构SIPC(SocketIPC),SIPC完全克服了原UNIX V7中进程通信机构的局限性。     

Information Technology Clusters in India

The Indian information technology (IT) industry is deeply entrenched in the key metros of India, giving rise to seven large IT clusters. The country's tier I cities Bangalore, Delhi, Chennai, Hyderabad, Pune, Mumbai, and Kolkata have all emerged as significant IT hubs. The seven IT clusters are different in their history, economic weight, activity base, anchor companies, business models, government role, and other driving forces. However, even as these cities are attracting IT investments and creating employment for thousands of citizens, the drawbacks of overstressed infrastructure, escalating real estate costs, and shortage of skilled IT professionals represent challenges for IT organizations. The paper substantiates the inevitability of the hardware and software sectors linked development at this stage. It is the first attempt to study the IT industry in India through the prism of the countrywise cluster development and combination of IT sectors – hardware design and manufacturing, IT services, software and research and development, and IT-enabled services for business process offshoring.      

The urban-rural interface: Urbanization and tropical forest cover change

A considerable body of empirical and theoretical literature on the causes of tropical deforestation has emerged over the last twenty years. Recognizing that small-farmers in the Amazon Basin are a key agent in the process of primary forest conversion, a growing genre of studies at the household level have attempted to quantify the influence of various factors on small-farmer land-use decisions. Many of these studies have acknowledged the seeming importance of urban centers as hubs of propulsive activity and information, yet none have comprehensively captured the urbanization factor in rural land use decisions. I argue that this methodological shortcoming in empirical work to-date reflects an inadequate conceptualization of the range of urban-based networks and their inter-relationships. In an effort to overcome this roadblock to further empirical discovery, I review several leading schools of thought that might be pressed into service in developing a framework for interpreting the urban influences on rural landscapes. I call this construct the Urban-Rural Interface. This is not a complete theoretical model or a unique methodology, but rather an initial effort to develop a general framework from which more sophisticated formulations might proceed.     

GENSI: A new graphical tool to collect ego-centered network data

This study (1) tested the effectiveness of a new survey tool to collect ego-centered network data and (2) assessed the impact of giving people feedback about their network on subsequent responses. The new tool, GENSI (Graphical Ego-centered Network Survey Interface), allows respondents to describe all network contacts at once via a graphical representation of their networks. In an online experiment, 434 American adults were randomly assigned to answer traditional network questions or GENSI and were randomly assigned to receive feedback about their network or not. The traditional questionnaire and GENSI took the same amount of time to complete, and measurements of racial composition of the network showed equivalent convergent validity in both survey tools. However, the new tool appears to solve what past researchers have considered to be a problem with online administration: exaggerated numbers of network connections. Moreover, respondents reported enjoying GENSI more than the traditional tool. Thus, using a graphical interface to collect ego-centered network data seems to be promising. However, telling respondents how their network compared to the average Americans reduced the convergent validity of measures administered after the feedback was provided, suggesting that such feedback should be avoided.     

基于C语言的数据包校验算法与接口转换技术研究

数据包校验与接口转换技术是计算机监控系统中的关键技术.重点研究了各种常用的基于C语言的数据校验算法,以及相关的数据接收技术与接口转换技术,并举例论证.最后,利用以上所研究的技术实现了一个计算机监控系统的远程处理方案.     

《锁相环路原理》CAI课件的设计与特点

主要介绍《锁相环路原理》ＣＡＩ课件的总体设计思想和程序设计方法,并通过示例反映了该课件的功能与特点     

Embedded expertise: a conceptual framework for reconstructing knowledge orders,their transformation and local specificities

The role of science in modern democracies has long been a topic of heated debate. Recent scholarship has increasingly focused on the social construction of the science–policy–politics nexus. For understanding both the local specificity of concrete configurations and general trends much is to be gained from an analytical framework. In a first introductory section we describe already existing categorizations and typologies, identifying a research gap: a framework for reconstructing the discursive forces shaping the science–policy–politics interface based on both mutually exclusive and exhaustive categories. Our answer is the concept of knowledge orders. Building on already existing scholarship in this field, we define knowledge orders as discursive orders structuring the production of expertise. We distinguish between three levels of knowledge orders: the generation and communication of science-based expertise, the regulation of these processes, and reflexive discourses in which the epistemic authority and the political relevance of science-based expertise are (de)legitimized and renegotiated and the regulation of the science–policy–politics nexus debated. Each level can be analyzed in terms of the criteria based on which competence is attributed (social dimension) and at when political or scientific criteria of relevance and validity are to be applied (procedural dimension). The framework is illustrated by referring to both well-known examples in science studies and our own research on science–policy–politics arrangements in the field of food safety and employment policy.     

基于感性工学下的数字化交互设计在工业设计中的应用与研究

本文通过对数字化人机交互与人机交互界面进行研究分析,并依据感性工学的研究原理,提出了从三方面考虑人机工程学对用户界面设计的体现作用.以期不断提升和优化人机与用户界面,使人机互动更便捷.     

基于Web的五金产品个性化定制平台研制与开发

为提高五金产品生产企业的市场竞争力,针对五金产品生产企业的特点,提出基于Web的五金产品个性化定制平台的体系结构;采用支持远程协同浏览功能的STViewer为客户提供最直观的产品展示;运用基于实例推理技术（Case Based Reasoning, CBR）求解产品配置方法,为实现异地分布环境下客户驱动的个性化定制,降低企业生产成本,提高市场竞争力,提供了有效途径。