公共自行车服务系统的分析及改进

本文对温州市鹿城区公共自行车服务系统180个站点进行调查,综合分析研究了每个站点的借还车状况和用车时长,进一步结合温州市鹿城区地图,定义两站点之间的距离,然后综合考虑各站点的锁桩数量对公共自行车服务系统进行评价,最后为公共自行车交通服务系统提供一些解决方案,以便更好的完善公共自行车租用系统。     

关于公共自行车服务系统的分析

环境问题一直是人们话题的重点,公共自行车作为一种绿色的出行方式正在迅速的推广、普及,自行车服务系统的运行并不是令市民很满意。主要针对公共自行车站点的系统设置和各站点自行车锁桩数量如何安排进行讨论,并建立相关的数学模型,进行相应的统计及优化。     

基于ID3改进算法的公共自行车服务系统优化研究

优化设置站点位置和锁桩的数量,直接影响了城市公共自行车服务系统的运行效率。ID3改进算法,是数据挖掘技术中应用最多的决策树生成算法,改进后的ID3算法大大提高了准确度和执行效率。文章阐述了运用ID3改进算法的数据挖掘技术,对已经部署公共自行车站点的区域进行分析,从而找到公共自行车系统的最优运行规律,同时,创建站点和锁桩的配置模型,为城市公共自行车系统高效运行提供有价值的参考。     

杭州市公共自行车系统存在问题及发展建议

在考察了杭州市中心区、一般居民区的公共自行车站点分布和市民使用情况的基础上,对杭州市公共自行车系统实施效果进行评价,提出需完善站点设置、重视基础设施建设,使其更好地与公共交通相结合,完善管理程序,逐步、有序地实现自动运营,使城市交通走上安全、健康、和谐之路.     

淮海工学院公共自行车智能管理系统方案设计研究

本文根据当前大学校园学生拥有及使用自行车的现状,立足于淮海工学院苍梧校区的实际,主要针对校园公共自行车智能管理系统的设计方案进行研究。通过对校外共享单车在淮海工学院苍梧校区附近的站点分布、车辆数量、学生对公共自行车需求分析以及淮海工学院公共自行车智能管理系统投入的成本费用和预期收益的分析,认为淮海工学院实施公共自行车智能管理系统具有明确的可行性。在此基础上,从淮海工学院公共自行车智能管理系统校内站点的选择、系统运行模式的设计、控制系统的开发设计等方面分析研究该系统的方案设计,构建了该系统的基本构架。     

基于深度信念网的公共自行车租赁单站点调度需求量研究

目前公共自行车租赁的合理调度对提高公共自行车的使用效率至关重要,其关键在于对未来公共自行车的需求量进行精准的预测.通过多层受限玻尔兹曼机来实现自主学习特征;然后再用学习好的特征来实现BP神经网络对单站点借车频次随时间分布的规律进行预测.实际需求曲线与预测曲线拟合良好,证明了本文提出的预测的方法有效可行.     

公共自行车用车的借还车站点之间距离的一种解决方法

本文针对2013年全国大学生数学建模试题,温州市鹿城区公共自行车服务中心提供的20天借车和还车的原始数据,定义了两站点之间的距离,并求出最小距离和最大距离。     

大数据环境下公共自行车服务系统的综合评价

本文主要对浙江省温州市鹿城区公共自行车运行系统20天借还车原始数据进行统计,运用SPSS和EXCEL统计软件,对各类因素进行量化,将定性研究转换为定量研究。通过对收集数据的统计分析,发现公共自行车在人群密集区的站点,运行效率比较高,适用于短途出行,在工作日运行效率较高,用车高峰时段主要分布在上下班高峰时段及其附近。这些统计数据对于正确评价此系统的综合指标是有较大意义的。     

共享单车运营特征实证研究

选取五类典型点位,通过各种非机动车出行方式的租借量差异比较、各个点位不同时段以及站点自身租借量与归还量对比,实现对共享单车运行特征的分析。结论显示:不同类型点位,非机动车出行方式中共享单车所占比例差异较大;五类点位中,酒店与旅游区、医院、地铁站这三类点位的共享单车使用频次较高;对于居住区、商办区域这两类点位,相比共享单车,公共自行车更具有吸引力。     

公交线路选择的优化模型

本文针对城市公交线路选择问题建立了相应的数学模型。将公共自行车看作独立于公汽、地铁的第三种交通方式。利用网络图,主要从换乘次数、出行花费和出行总时间三个方面来确定最佳线路,分别考虑了各单目标,增加不同的上限约束,建立了任意两站点的最佳线路相应的网络流模型。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

Ansätze und Ergebnisse anglo-amerikanischer M&A-Forschung

Based on a review of established U.S. management journals (1995–2003), six schools of thought are identified within the Anglo-American M&;A research: “Capital Market”, “Principal/Agent”, “Industrial Organization”, “Organizational Behavior”, “Human Resources” and “Strategic Management”. The literature review shows that the definition of M&;A success, the methods applied, and insights from empirical research differ according to the respective school of thought. Empirical studies focus on the resource combinations of merger partners, the specific circumstances of merger negotiations, and on integration management as antecedents of merger performance. Unfortunately, empirical findings have not yet provided reliable explanations for M&;A success. Based on the current state of Anglo-American M&;A research, the authors discuss implications for business practice, identify research gaps, and propose areas for future research.     

Introduction of New Technology with a Sound Transition of the Input-Output Structure

We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。