高速公路主线收费站通行能力改善研究

高速公路主线收费站的通行能力直接影响着整个路段的通行能力,针对高速公路主线收费站运行中出现的“前紧后松”问题,依据主线收费站的建设特点,提出了一种优化改造措施,在分析了收费站车辆到达时间与服务时间分布特点的基础上,借助M/G/K排队模型进行通行能力计算和服务水平评估,并通过实例验证了这种改造措施能够有效地提高通行能力.     

评论

别了!487个高速公路省界收费站事件:取消高速公路省界收费站工程并网切换1月1日零时圆满完成,全国29个联网省份的487个省界收费站全部取消,意味着取消高速公路省界收费站任务基本完成。评论:取消高速公路省界收费站不是取消收费,而是在拆除省界实体收费站的同时,通过技术手段实现车辆跨省行驶时不停车快捷交费,涉及方案制定、工程建设、收费政策优化调整、ETC推广应用等相关方面的工作。取消高速公路省界收费站以后,全国高速公路实现“一张网”运行,将有效提高综合交通运输体系运转效率,缓解拥堵、改善人民群众出行体验,助力节能减排,降本增效。     

基于排队论的航空保障资源配置研究

航空母舰航空保障战位的优化配置在某种程度上影响着舰载机的最大出动强度。通过明确航空站位数量的设置与舰载机及母舰的运行成本之间的关系,可以确定航空保障站位的优化配置数量。本文以俄罗斯航母为模型,运用排队论思想对舰载机等待保障的M/M/1模型进行算例计算及仿真研究,分析出满足舰载机航空勤务保障的合理优化配置数量,研究发现,航空保障站位的配置数量以7组为最佳,此方法可为航空保障资源配置方案的设计提供一定的理论支撑。     

简议甘肃高速公路入口治超劝返系统方案

随着全国高速公路取消省界收费站,并大力发展ETC电子不停车技术,实现按车型收费模式,入口治超正式成为高速公路收费系统不可缺少的一部分,入口治超劝返系统的设计方案和运行模式将进一步完善和优化,并在将来高速公路运行中得到发展。     

高速公路收费站信息系统防雷问题的探讨

文章将从高速公路收费站的环境、电源系统、网络系统、监控系统、计重系统、等电位与接地系统等方面对高速公路收费站信息系统防雷问题进行探讨。     

一种高速公路收费站车辆排队长度监测系统

高速公路收费站是车辆通行集中的地方,尤其是节假日期间,车辆的集中出行会造成车辆大排长龙的现象,这对人们出行和道路交通控制造成了很大困扰。及时掌握高速公路收费站的车辆排队长度,对交通管理部门和高速公路公司采取多开闸口或免费放行政策都有着重要的意义。文章介绍了一种高速公路收费站车辆排队长度监测系统。     

高速公路服务品牌建设的创新成果——《“春雨”服务品牌管理模式研究》简介

近几年,各地高速公路管理单位积极响应交通部创建收费站服务品牌的倡议,纷纷推出了各具特色的收费站服务品牌,石家庄裕华路收费站的“春雨”服务品牌就是其中的佼佼者,受到了社会各界的认可和赞誉. 《“春雨”服务品牌管理模式研究》一书以石家庄收费站的实践为支点,运用现代品牌管理理论,从服务品牌创建、品牌形象塑造、品牌运行机制、品牌评价体系等多个角度对收费站服务品牌建设进行了系统、立体的剖析,总结出收费站服务品牌管理的基本模式,提炼出收费站服务品牌创建的运行机制、司乘人员收费站体验与品牌联想的“六六”模型、收费站服务品牌建设的评估模型等实用工具,为深化我国高速公路服务品牌建设提供了理论上的支撑.     

高速公路收费站信息系统防雷问题的探讨

文章将从高速公路收费站的环境、电源系统、网络系统、监控系统、计重系统、等电位与接地系统等方面对高速公路收费站信息系统防雷问题进行探讨.     

新时期高速公路收费站政工工作的研究

随着我国经济社会的飞速发展,我国的交通建设发展也取得了十分显著的成就,尤其是在高速公路建设方面。而高速公路收费站政工工作开展的好坏在很大程度上决定了交通公路部门的形象。本文主要从新时期高速公路收费站政工工作的重要性、存在问题与进一步提升高速公路收费站政工工作的有效方法这三方面对高速公路收费站的政工工作进行了分析与研究,希望能够有助于我国高速公路收费站政工工作效率的进一步提高。     

高速公路收费站通行能力实时评估预测及其改扩建科学规划浅析

<正>高速公路作为最基本的交通运输设施,已成为国家经济发展的重要支柱。高速公路收费站作为高速公路上的重要服务设施,其服务水平情况直接影响着高速公路的通行能力。近年来,随着国家经济的快速发展,高速公路车流量迅猛增加,给高速公路收费站的服务能力带来巨大的压力。同时,恶劣天气的影响以及绿通车的开通都给高速公路收费站服务能力带来了挑战。因此,选择合适的收费站进行改扩建,以及如何在现有条件下提高收费站的通行能力和服务水平,是目前高速公     

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.