城市地下物流系统发展模式及相关技术要求

结合国内外地下物流系统建设研究经验,提出了城市地下物流系统发展模式以及技术要求,比较分析了不同发展模式的特点、研究现状、使用范围以及技术参数。分析表明不同发展模式对地下物流系统建设要求和使用范围影响较大,通过对城市地下物流系统发展模式的研究对我国城市地下物流建设和研究也具有一定借鉴意义。     

城市地下物流系统发展模式及相关技术要求

结合国内外地下物流系统建设研究经验,提出了城市地下物流系统发展模式以及技术要求,比较分析了不同发展模式的特点、研究现状、使用范围以及技术参数.分析表明不同发展模式对地下物流系统建设要求和使用范围影响较大,通过对城市地下物流系统发展模式的研究对我国城市地下物流建设和研究也具有一定借鉴意义.     

城市地下物流系统网络布局优化

为充分考虑物流系统规划布局和城市地下物流系统空间规划,避免网络布局不合理导致后续运营成本过高、配送能力不足等问题,根据城市地下物流系统的特点,将其抽象为二级节点选址和三级节点分配问题,设计了由三级节点构成的地下物流系统。考虑地下物流系统的建设成本和建成后的使用率,构建了基于成本和设施效用率的多目标、多约束的选址-分配模型,并采用遗传算法对构建的模型进行求解验证,得到城市地下物流系统网络布局优化和分配决策方案,解决了二级节点的选址和分配问题,对地下物流系统网络构建与优化问题有一定的参考价值。     

基于集合覆盖模型的城市ULS物流节点选址分析

作为第五类运输与供应系统的地下物流系统，能够缓解日益严重的城市交通拥挤问题，提高交通的安全性和可靠性。减少环境污染。物流节点作为系统的终端，主要负责对系统的管理、控制功能以及对货物进行存储、配送等功能，是城市地下物流系统的重要组成部分。主要运用集合覆盖模型对城市地下物流系统的物流节点选址问题进行了初专的分析探讨。     

基于物联网环境的智能物流系统设计研究

智能物流系统是物流企业建设信息化平台的基石,是物流作业流程实现智能化、一贯化、集成化的基础,探讨智能物流系统的设计对促进企业信息化建设,提升企业服务水平具有现实意义。文章首先介绍了智能物流系统的内涵、物联网技术关键技术:RFID、GPS、ZigBee等的原理和特征;其次,研究了基于物联网技术的智能物流系统的设计,并就物联网技术与智能运输系统、智能信息管理系统相结合的结构设计、工作原理进行分析。     

城市地下物流系统网络规划初探

城市地下物流系统是指运用自动导向车和两用卡车等承载工具, 通过大直径地下管道、隧道等运输通路,对固体货物实行输送的一种全新概念的运输和供应系统。1990年代以来,利用地下物流系统进行货物运输的研究受到了西方发达国家的高度重视,并被视为未来可持续发展的高新技术领域。国外研究表明,利用地下物流系统进行货物运输,具有速度快、成本低、全自动化、准确性高等优势,是解决城市交通拥堵、减少环境污染、提高城市货物运输的通达性和质量的有效途径。本文将就城市地下物流系统的网络规划展开初步探讨。     

基于遗传算法的配送中心选址问题求解

配送中心是物流系统的枢纽,配送中心地址的确定是物流系统分析的核心内容。文中试对包括RDC(区域配送中心)选址和RDC到各下属仓库的配送关系进行研究;建立了一个模拟随机需求下的相关机会优化模型,并提出了基于遗传算法的解决方法,最后利用MATLAB软件进行算例分析。     

城市地下物流系统及其设计

阐述了城市地下物流系统的概念、特点及作用,分析了城市地下物流系统的研究与发展现状,提出了城市地下物流系统设计的主要步骤。     

基于地铁进行城市内物流运输的可行性分析

随着城市的发展所导致物流运输成本的增加是当下城市内物流运输迫切需要解决的问题。在城市化进程加快的今天,传统的城市内物流运输模式与快速增长的物流运输需求量形成矛盾。发展地下物流是未来解决城市内物流矛盾的新途径,而如何实现地下物流运输是发展地下物流的关键功能要素。以地铁作为城市内地下物流的运输工具作为研究对象,探究其可行性。针对目前城市内物流过程进行设想,分析地铁作为物流运输工具的合理化程度。     

浅谈小区管线竣工测量的几个问题

中国数字化信息的迅速发展,使得城市地下管线已经成为城市地理信息基础产业之一。为实现城市地下区域管线的全面发展,需要对城市地下管线竣工测量数据进行及时检查,确保城市地下管线竣工测量有效发展。文章根据介绍小区地下管线和小区管线竣工测量的分类和特点,从而针对小区地下管线竣工测量中的有关问题进行探讨。     

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.     

Incumplimiento del salario mínimo en Europa central y oriental

En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio.     

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.     

Cultural Economy Planning in Creative Cities: Discourse and Practice

While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes.     

Input/output ranges and performance: an examination of US machine tool producers

Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms.     

Sixty years of discrimination and diversity research in human resource management: A review with suggestions for future research directions

This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years.     

Multinomial distributions applied to random sampling of particulate materials

When sampling a batch consisting of particulate material, the distribution of a sample estimator can be characterized using knowledge about the sample drawing process. With Bernoulli sampling, the number of particles in the sample is binomially distributed. Because this is rarely realized in practice, we propose a sampling design in which the possible samples have a nearly equal mass. Expected values and variances of the sample estimator are calculated. It is shown that the sample estimator becomes identical to the Horvitz–Thompson estimator in the case of a large batch-to-sample mass ratio and a large sample mass. Simulations and experiments were performed to test the theory. Simulations confirm that the round-off error due to the discrete nature of particles is negligible for large sample sizes. Sampling experiments were carried out with a mixture of PolyPropylene (PP) and PolyTetraFluorEthylene (PTFE) spheres suspended in a viscous medium. The measured and theoretical variations are in good agreement.