“四阶段法”中运量分配的路网断面剖切技术研究

针对"四阶段法"的运量分配过程中存在对路网动态变化的适应性反应迟钝、相关径路双向交流产生的大量回流量重复计算、通道交流量缺乏总量控制调节关键环节等问题,提出采用路网断面动态剖切技术,给出具体操作步骤和基本算法,并与传统运量分配方法进行优劣分析。通过宝中线运量预测的实例计算分析,说明断面剖切技术的实际应用。     

基于知识管理的网络课程设计

分析网络课程的现状、特点及不足，借助知识管理的基本理论，提出基于知识管理的网络课程的设计原则、设计策略和设计过程，为网络课程的开发建设提供了一个新视角、新思路，从而提高网络课程的质量，进而培养学生的知识管理能力。     

基于V5的用户接入系统ISDN接入模块的设计与实现

介绍Ｖ５接入网用户接入系统的ＩＳＤＮ接入模块硬件和软件设计方案。这个方案具有系统配置灵活的特点。另外，此方案主要采用西门子公司的芯片组。     

论消费者对网络银行安全问题的防范

现今网络银行已走进我们的生活,消费者在购物的同时也能享受到它所带来的方便。但随着网银业务的不断发展,也带来了不少安全问题,病毒、黑客等不安全因素正威胁着消费者的账户安全。本文以网上交易为例,从消费者的权益出发,重点论述了对网络银行账户安全可能造成威胁的几个因素,并列举了如今作为消费者能够采取的多种防范措施,和所能享受到的多种安全保障服务。     

浅析如何有效发挥网络媒体在国家形象传播中的作用

国家形象是一个国家软实力的重要组成部分,树立良好的国家形象已经成为全球化时代的重要生存之道。同时,随着信息化时代的不断发展,世界各国已经强烈地意识到,利用网络媒体进行国家形象传播已经成为一条方便、快捷、效率高的现实新途径。     

Preparing for distant collaboration: Antecedents to potential absorptive capacity in cross-industry innovation

Cross-industry innovation entails distinctive innovation opportunities and challenges according to the knowledge heterogeneity between the collaborating firms. This heterogeneity yields increases in organizational-level cognitive distance. Whereas recent theory suggests cognitive distance is positively related to exploratory innovation, too much distance can hinder efficient knowledge absorption and results in a reduced effect on novelty value. This paper focuses on the research question of how to build potential absorptive capacity for distant collaboration beyond established industry boundaries to gain radical rather than incremental results. To address this question, we mapped a cross-industry network using survey data on 215 bilateral cross-industry collaborations between firms from a variety of industries and captured cognitive proximity (the inverse of distance) in terms of overall knowledge redundancy between firms. This approach introduces a new method to infer organizational-level cognitive distance from network analysis. Subsequently, based on results from the network analysis, we examined coordination antecedents to potential absorptive capacity for cross-industry innovation with partners at moderate and high distance applying case study analysis. Our study revealed three alternative approaches to coordination antecedents that drive a firm?s potential absorptive capacity for distant collaboration. These findings extend research on absorptive capacity to the field of cross-industry innovation.     

Book Reviews

Rail privatisation was a controversial, widely unpopular policy whose implementation was not inevitable. This article employs counterfactual history methodology to examine whether the move to rail privatisation in Britain might have failed. It places the privatisation proposals in context by examining opposition within the Conservative Party and British Rail. The paper then focuses on three key counterfactual questions, including the significance of New Labour's reversal of its commitment to renationalise rail under its ‘third way’ policy and the possible consequences had the move to privatise rail failed. Based on the historical evidence available, it concludes that the move to rail privatisation could have failed, and that performance would have been better had rail remained an integrated, nationalised industry.     

Enterprises,incentives and networks: The formative years of the electrical network in Portugal, 1920–1947

Path-dependence, the formation of technological irreversibilities and ownership patterns, have recently been salient aspects in the study of historical networks. This article analyses the formative years of public utilities in a period where the advantages of co-ordination, interconnection or integration between enterprises was still incipient. The purpose is to understand what happens when the competition to expand the physical extensions of nodes and links is suddenly blocked, and the enterprises can only compete to increase supply. The theme is thus of network enterprises operating without some of the standard incentives to economies of scale. The allocational and distributional consequences of this particular situation are exposed through an examination of the case study of Portuguese electrification in the first half of the twentieth century.     

政策网络的结构与治理:以我国房地产宏观调控政策为例

房地产的宏观调控是我国政府公共管理能力的核心体现,然而,近年来其调控效果并不显著.作为一种新兴的分析工具--政策网络能较好地掌握与处理多元角色参与公共政策制定的议题.因此,本文从政策网络的视角,通过理论研究和案例分析,探讨房地产政策网络的结构特征及其治理机制.研究发现:我国房地产宏观调控的困境关键在于政策网络的开放度太...     

网络教学环境设计与控制策略研究

教学环境设计是网络教学的基础,控制策略是网络教学的手段,教学质量是网络教学成败的关键。从这三个方面综合研究网络教学是十分重要的课题。本文全面分析了三方面的相互关系,在总结网络教学经验的基础上,提出了具体的可操作措施。