基于MapBasic的TOPN分析模块的实现

介绍一种基于MapInfo平台,利用Mapbasic开发的用于分析网络KPI指标的TOPN模块的实现。该插件的应用,使得网络优化工程师能够直观地了解网络的状态,把具体的数据和图形相结合,提高了分析和问题定位的效率。     

The Structure of Municipal Water Supply Costs: Application to a Panel of French Local Communities

Network losses and returns are importantissues for water resource management, that are addressed in thispaper by modeling the structure of production for municipal waterutilities with two outputs: water sold to final customers andwater network losses. We propose a measure of economies of scopeto assess the benefit associated with joint production of waterfor final customers and water losses, and several measures ofreturns to evaluate potential gains in exploiting technologicalflexibility of water networks. We estimate the cost structureof water utilities using a GMM procedure with a Translog costfunction and panel data. Estimation results reveal a positivedegree of economies of scope, and short-run returns to productiondensity and returns to customer density that are not significantlydifferent from 1. Significant economies of scale indicate thatlocal communities may benefit from merging into water districts.     

人工神经网络及其在盲信号处理中的应用

文章讲述了人工神经网络基本知识、特点及几种典型神经网络,介绍了盲信号处理的基本概念,最后进一步指出了人工神经网络在盲信号处理中的优势。     

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.     

The use of management control mechanisms by public organizations with a network coordination role: A case study in the port industry

Our paper addresses two gaps in the literature on management control mechanisms in the context of inter-organizational relationships. Firstly, several studies have focused on one-to-one relationships, but few take a network perspective which analyses the deployment of management control mechanisms in the context of networks involving multiple interactions between organizations. Secondly, even fewer studies have specifically tackled the use of these mechanisms in the context of mixed-type networks, where a public organization acts as the network coordinator responsible for key governance activities. This is the position in Ports, which are collectives of several related organizations and in which one organization – the “port authority” – assumes the role of network coordinator. In this paper we report the results of a case study, the aims of which were: to identify the management control mechanisms deployed, or relied upon, by the Portuguese Port Authority in the Port of Aveiro in the exercise of its coordinating role; and to discern – on the basis of theoretical reasoning and empirical evidence – the factors explaining the nature and use of these mechanisms.Several conclusions emerged from the study. A general conclusion was that our prior literature-based theorization is generally consistent with the case observations. That is, in mixed-type networks, the nature and use of management control mechanisms by the public organization acting as a network coordinator seems to be shaped by its assessment of motivations to cooperate and of the contribution to network performance of the various organizations involved in the network. Other more specific conclusions are encapsulated in a “coordination framework”, which relates those assessments to specific features of the management control mechanisms. Crucially, our results provide insights into the roles of public organizations acting as network coordinators in the context of mixed-type networks, and, in general, on the nature of the numerous such public organizations in today's economy and society.     

云存储网盘综合性能评定

网盘是网络与存储技术结合的产物,已成为企业和个人存储和共享信息资源的重要工具,云存储技术的应用与无线网络的普及,为网盘发展带来了新前景。目前,国内外网盘品牌颇多且各具特色,本文选择国内现流行的五款产品,运用层次分析法评定其综合性能,发现高传输速度为网盘商带来竞争优势。     

论网络对信息来源社会化的影响

网络增强了社会互动,社会互动促进了信息互动。网络使个体图书馆的文献信息资源具备了广泛的社会性特征。网络控制着信息的集散,也控制着人们信息消费的广度与深度。     

网络社会的政府政策法规管控

随着网络技术的发展和成熟,在这一广阔而自由的空间领域中,政府的管理和控制则显得苍白乏力,基于此种认识和社会现状,本文指出政府在网络管控的政策法规方面存在的主要问题,以及政府在治理方面应加强和完善的措施。     

基于Crystal Ball的PERT网络计划项目工期风险分析

文章介绍了网络计划技术,对PERT网络计划项目各活动持续时间的确定进行了分析,总结了使用Crystal Ball进行风险分析的步骤,构建了某PERT网络计划项目各活动的时间参数的Excel模型。在此基础上,使用Crystal Ball建立该项目的工期风险分析模型,并对该模型进行风险分析,获得有效的分析结果。     

电子商务中的信息安全及应对方法

随着互联网的全面普及，基于互联网的电子商务应运而生。它的高效率、低成本等优点越来越受到社会的认可。而作为一种全新的商务模式，信息安全的保障是电子商务实施的前提。