呼包银榆资源型经济区城市化与空间规划策略

呼（和浩特）包（头）银（川）榆（林）经济区是我国西部地区资源型经济特征明显的重点发展经济区。以实证研究的方法,通过分析经济区资源环境约束下的城市化和空间布局特征与问题,指出经济区面临的发展困境是资源型工业化、城市化与生态环境脆弱之间的严重冲突。提出以动力多元化、集中式城市化、城镇与产业协同、资源开发利用与生态保护协调为核心的新型城市化发展战略,以及“适度开化、集聚布局、保护生态”的空间开发利用和保护基本策略。以强化空间功能区规划的空间政策管理、加强城市一工矿区空间集约利用规划机制,优化城市化空间组织,作为空间布局规划的战略思路和途径。     

我国集装箱港口体系演进规律研究

从集装箱港口数量、吞吐量、空间布局、市场集中度几个角度,利用赫芬达尔—赫希曼指数来分析1979—2011年我国集装箱港口体系及市场结构的演变,指出1979—1989年是快速分散阶段,为高度集中的寡占市场;1989—2009年是缓慢分散和缓慢集中相互更替的发展阶段,形成了中度集中的寡占市场;2010—2011年延续了分散的趋势,HHI值已经小于1 000,出现了形成非集中竞争市场的趋势。这要求港口企业随着竞争程度的不断增强,需要不断提升质量、建设软环境,提高竞争力,从粗放式发展向精细化、敏捷化发展。     

Rural-urban gradient analysis of ecosystem services supply and demand dynamics

Urban regions are important places of ecosystem service demands and, at the same time, are the primary source of global environmental impacts. Although there is broad agreement on the importance of incorporating the concept of ecosystem services into policy strategies and decision-making, the lack of a standardized approach to quantifying ecosystem services at the landscape scale has hindered progress in this direction. Moreover, tradeoffs between ecosystem services and the supply/demand ratio of ecosystem services in urban landscapes have rarely been investigated. In our paper, we present a method to quantify and map the supply and demand of three essential provisioning services - energy, food, and water - along the rural-urban gradient of the eastern German region Leipzig-Halle. This urban region has experienced significant socio-economic dynamics and land use changes since the German reunification in 1990. The results show that both the demand and the supply of ecosystem services changed considerably during the time span under consideration (1990-2007). We identified an increasing supply/demand ratio of food and water but a decreasing supply/demand ratio of energy. In addition, the pattern of ecosystem demands shows a levelling of rural-urban gradients, reflecting profound modifications of traditional rural-urban relationships. The changes of ecosystem service supply gradients are determined more by land use intensity, such as the intensification of agricultural production, than by land cover changes such as urban sprawl. The comparison of supply/demand ratios and rural-urban patterns of ecosystem services can help decision-makers in landscape management in striving for a sustainable balance between resource supply and demand.     

基于空间优化的生态城市发展模式及发展趋势研究

城市作为社会发展的重要空间载体,其发展模式演进对经济社会进步具有重要意义。自党的十七大报告提出“建设生态文明”以来,生态文明已上升为国家战略。在生态文明战略背景下,城市发展逐步从经营城市转变到生态城市,并趋向和谐城市。生态城市、和谐城市是生态文明战略的重要组成部分,如何发展生态城市、和谐城市是实践生态文明、建设和谐社会的重要内容。文章围绕生态文明理念,从空间优化的角度分析了典型生态城市的发展模式,并对其发展趋势——和谐城市进行思考,由此提出对城市发展具有借鉴意义的对策建议。     

我国住房公积金制度运行的绩效、问题及对策

住房公积金制度建立至今,已成为我国住房保障体系的重要组成部分,为我国住房建设和住房金融提供发展的动力,尤其在推动廉租房建设方面发挥了重要作用。但是,住房公积金制度在现实运行中还是存在覆盖面有限、运行效率低、保障作用有限以及治理结构设计、决策机制和监管机制不健全等问题。文章对以上问题进行了归纳和深入分析。并在此基础上,提出了规范和完善住房公积金制度的对策和建议。     

在电子出版中融合固定版面与流式信息的方法刍议

人们对于电子文档的使用要求越来越高,对电子应用技术的挑战越来越大。然而,电子文档固定版面和流式信息两者之间始终存在着难以调和的矛盾。本文试图找到一种新型文档模型,使得固定版面和流式信息二者能够在电子文档的出版过程中很好地融合在一起。     

基于盒子模型的网页布局方法研究

在使用XHTML＋CSS技术对网页进行布局时，一般是将页面中的各栏目按DIV盒子分块，每个DIV里面的内容也是由多个盒子模型所组成，盒子模型的使用对网页的布局起着决定性的作用。     

How Does Using a Mobile Device Change Investors’ Reactions to Firm Disclosures?

I examine how characteristics of investors’ information access tools change investors’ reactions to firm disclosures. I examine my research question in the context of information choice (i.e., allowing investors to choose the order of information and sections to read within a disclosure) and spatial layout (i.e., how information is displayed when viewing the disclosure). Results of an experiment are consistent with information choice improving investors’ judgments if the disclosure is viewed on a computer screen. Conversely, and consistent with cognitive overload, information choice harms investors’ judgments if the disclosure is viewed on a smaller screen, such as that of a mobile device. Follow-up experiments show that changing the disclosure presentation to reduce the need to scroll is one way to improve investors’ judgments on a smaller (or mobile) screen. My findings caution firms and regulators about expanding information choice within disclosures without considering the screen size used to access the disclosure.     

Residential mobility and the local context: Comparing long-term and short-term spatial trends of population movements in Greece

Residential mobility is a key dimension of population dynamics shaping urban growth and rural development at different spatio-temporal scales. Assuming spatial mobility as increasingly dependent on the intrinsic characteristics of local contexts, the present study investigates long-term and short-term population movements in a European country (Greece), in light of regional urbanization processes and socioeconomic development. A multidimensional analysis of indicators of residential stability and background variables was carried out with the aim at evaluating the influence of local contexts on more general processes of population mobility. Different typologies of spatial mobility associated to factors (directly or indirectly) dependent on demographic dynamics, economic performances and urban cycles were identified. The empirical findings of this study evidence (more or less traditional) paths of internal migration and a latent process of population relocation across metropolitan regions, together with more recent international migrations at both working and retirement age. While short-range population movements were the ultimate result of late suburbanization in Greece, medium- and broad-range mobility consolidated the country's divide in urban and rural areas, evidencing the attractive role of Athens. Spatial direction and intensity of population movements reflect complex socioeconomic transformations, whose knowledge provides innovative visions for a better understanding of future demographic dynamics in Mediterranean Europe.     

利用层次分析法合理布局企业网点

随着中国市场的逐渐成熟、完善,更多的外企带着自己的产品来到中国,同时市场的竞争也更加剧烈。企业要不断加强售后服务、物流配送、供货周期等各个环节,增加自己产品的市场竞争力,合理布局企业网点至关重要,文章通过层次分析法讨论如何在国内个城市进行合理布局,以在物流配送、供货周期上实现最大的竞争力。