京津冀协同发展背景下雄安新区—沧州市城市链的构建

在京津冀协同发展背景下,沧州市作为承接疏解京津城市化发展压力职能的京津南侧重点城市之一,需要进行前瞻性的空间发展设计。应进一步完善雄安新区—沧州市城市链,按照分步走的发展秩序,构建由纵东链、纵中链和纵西链整合在一起的复合城市链,以连通雄安新区与沧州市,构建横北链、横中链和横南链以加强纵向城市链之间的联系。县级中心地在雄安新区—沧州市城市链上发挥着重要作用,但离不开乡镇级中心地的辅助作用。留古寺镇—米各庄镇是横中链与纵中链的交汇点,也是横中链两侧的北弧链与南弧链的交汇点,可优先发展。纵中链虽然与雄安新区和沧州市的连接更为直接,但其县级中心地的承接力不够高,因此在纵中链上需要发展乡镇级中心地组合。

郑州市人民政府关于安全郑州创建的实施意见

郑政[2012]17号二○一二年五月四日各县(市、区)人民政府,市人民政府有关部门,各有关单位:安全生产事关人民群众生命财产安全,事关改革开放、经济发展和社会稳定大局,事关党和政府形象和声誉。为深入贯彻落实科学发展观,促进全市安全生产形势持续稳定好转,根据《安全河南创建纲要(2010—2020年)》

国家安全监管总局关于印发2009年安全生产宣传工作要点的通知

安监总政法[2009]37号各省、自治区、直辖市及新疆生产建设兵团安全生产监督管理局,各省级煤矿安全监察机构,总局和煤矿安监局机关各司局、应急指挥中心,各直属事业单位、社团组织:

基于网络游记探讨中外游客对北京城市品牌的认知

城市品牌作为一项无形资产,对加快城市经济发展、提高城市综合实力日益重要。基于内容分析法,运用安霍尔特城市品牌指标,从国际声望、环境素质、市民素质、基础条件、城市活力、发展机会六个维度分析了中外游客网络游记中体现的对北京城市品牌“国际一流的和谐宜居之都”的看法和态度。结果表明,游客认可其国际城市地位与和谐城市形象,但对北京是否为宜居之都存在质疑。最后,依据研究结果,为打造更好的北京城市品牌提出建议。

雄安城市计算中心中压AC直转通信DC+磷酸铁锂电池储能系统的应用探索

本文对数据中心供配电系统及电池储能系统的演进历程、技术原理、经济效益等进行了对比分析,并针对雄安城市计算中心在安全可靠及绿色低碳方面的特殊需求,提出并实践了一种基于中压AC直转通信DC+磷酸铁锂电池储能的新型供电方案,对其经济及社会效益进行了分析总结.

Construction of Urban Overall Water Environment in Xi'an City

[Objective] The aim was to study on construction of overall water environment in Xi＇an. [Method] The study discussed necessity and basic principles of over-all restoration and construction of ＂Chang＇an Eight Water＂ from urban planning, and explored related methods from long term planning and concrete construction approaches. [Result] The study proposed that urban landscape substrates of ＂Chang＇ an Eight Water＂ should be restored based on overall planning about urban water environment, change of linear metabolism, and construction of drainage circulation system. Furthermore, self-circulation and purification of rainfall and sewage could be made use of there in view of present urban water environment. In addition, urban ＂metabolism＂ should be restored progressively to improve urban environment with consideration of water catchment, storage, and diversion. [Conclusion] We should take the initiative to catch the special opportunity to build Xi＇an into an international metropolis with overall planning, designing and implementation, which will be conducive to reconstruction of water system and pleasant surroundings, and to presentation of urban ecosystem and context in ＂Chang＇an Eight Water＂, providing many opportunities for urban development.

Forest Ecosystem Services and Their Values in Beijing

As the most important ecosystem in Beijing, the forest supports a lot of ecosystem services to local and around communities, which plays a key role in the maintenance of urban ecological security.However, the valuation on the forest ecosystem services based on regional scale could not provide precise and reasonable values for forestry sector management.In this study, we estimated the magnitudes and economic values of the forest ecosystem services in Beijing at sublot level.The economic value of forest ecosystem services in Beijing was estimated to be 19 339.71×10 6 yuan(RMB) in 2004.Among all the ecosystem services indicators we estimated in this study, only fruit, timber and part of the recreation(which only include the tourism income from the forest parks and scenic areas, but not include that from other forest types) were measured in the social economic system.As estimated in this study, more than 82.19% of the economic value of forest ecosystem services could not be measured in the socio-economic statistical system.The importance of forest ecosystem services in Beijing to human welfare was underestimated by the socio-economic system.Therefore, the policies about the eco-compensation of forest ecosystem services should be established to maintain the sustainable supply of the forest ecosystem services in Beijing.

Vulnerability assessment of water resources to climate change in Chinese cities

Climate change is an inevitable trend,which challenges security of water resources in China,especially in cities.Assessing vulnerability of water resource to climate change in cities has important role for policy makers. The paper constructs a vulnerability function,including exposure,sensitivity and adaptive capacity,according to the vulnerability concept proposed by IPCC,establishes an assessment indicators system of water resources to climate change in cities,and analyzes vulnerability features of Chinese cites based on 655 cities＇data in 2006.The vulnerability assessment results show that there are distinctive differences among all the cities,between east,central and west cities,between ordinary,big and mega cities,while there is no statistical significant difference between north and south cities.Based on the research,the paper suggests that strategic emphasis should focus on the central cities and ordinary cities

Drivers'fixation transfer characteristics in urban tunnels

To improve the safety performance of urban tunnels,the fixation transfer characteristics of drivers with different driving experience levels in urban tunnels were investigated.First,a real vehicle test was performed in an urban tunnel,and the eye movement data of 10 drivers with different driving experience levels were collected using a Dikablis eye-tracking system.Second,the driver fixation range was divided into eight areas of visual interest by using the K-means clustering method,and the fixations in different sections of the tunnel were comparatively analyzed.Finally,on the basis of the divided areas of visual interest,fixation transfer rules and the stationary distribution characteristics of drivers with different driving experience levels on different sections of the tunnel were discussed using Markov theory.Results indicate that drivers'probability of repeated fixation is greater and that the efficiency of visual search is lower at internal sections of tunnels than in external sections.Drivers obtain information mainly from the straight upper front and straight lower front areas,and the probabilities of fixation points in these two areas at the threshold and exit sections are significantly higher than those in other sections.Relative to experienced drivers,novice drivers allocate little attention to the straight upper front area and rear-view mirrors.Hence,they have weak fixation when looking forward,and they lack experience in obtaining information on rear-approaching vehicles and controlling speed.

Impacts of Suburbanization on Urban Eco-environment of Xi'an in China

Suburbanization in large cities is an important phenomenon in the process of urbanization development in China in recent decades,which plays a very important role in promoting city development,whereas some side effects on the eco-environment appeared at the same time.This paper,taking Xi'an City in China as a case study site,analyzed the features of population suburbanization and industry suburbanization and pointed out the impacts of suburbanization on urban eco-environment.Based on the research,suggestions of countermeasures for urban planning and municipal management of Xi'an City in protecting urban eco-environment and conserving natural ecology were put forward in the end.

Analysis of STC Fault in Urban Rail Transit Station of Mobile Block System

Mobile block system is a new type of block technology based on the theory of interval block. This article focuses on the analysis of safety key points, the efficient use of emergency time, the maximum efficiency of mobilizers, to reduce the loss of emergency incidents and casualties.

Study on City Environment,Safety and Health from the Viewpoint of Ecological Risks

Urban ecological risk analysis is a relatively new study field.Rapid industrial modernization and urbanization have significantly improved the living standards of the city.However,as environmental,safety and health issues are causing widespread concern,these problems have potential serious threat on ecosystems and human health.So how to solve many problems arising from city has become a key to sustainable development of human civilization.The present article analyzed the major problems that the city confronts and pointed out the main measures from the aspects of urban environment,safety and health.

The retrospect and prospect on environmental legal system research of Xi'an City

Xi'an City is an important city of western region, facing the mission of constructing international metropolitan. There are many environmental issues in the city, which should be solved by legal construction. Based on the environmental status of the city, the construction content of environmental legal system was analyzed, focusing on conflict resolution, and the corresponding ways of research were proposed.

Urban Consumer Attitudes to Fresh Produce Safety in China

The objective of this study was to explain the determinants of the fresh vegetables purchase decision by Chinese urban consumers in Beijing including awareness and attitudes to food safety, and their willingness to pay （WTP） more for specific safety characteristics when buying fresh vegetables. The research rationale arises out of a history of food safety scares and scandals in China, and a national government response to promote quality assurance and safety through labelling. The primary hypothesis was that an understanding of food safety systems and product labelling, and trust in supply chain integrity would be key determinants in consumer willingness to purchase and pay more for safety assured vegetables. Based on a questionnaire survey of consumers in Beijing, the analysis found that the major factors underlying the purchase decision of fresh vegetables were product freshness, convenience and competitive price rather than assured product labelling. The decisions whether to purchase assurance-labelled vegetables and WTP more for chemical residue-free product were analysed by binomial and ordinal multinomial logit modelling respectively. It revealed a WTP moreof between 20% and 40%. Monthly household income was a key determinant of both quality assured product and WTP, together with degree of concern over residues, trust in retailer and assurance labels and place of purchase. The results suggest much still remains to be done to build trust though rigorous monitoring and enforcement of food safety standards to improve supply chain integrity and consumer confidence.

Underground water biological field＇s variation and geoenvironmental safety in city

In the process of city construction, as a comprised factor of city geological environment, underground water takes the most active part, and its dynamic change is fiercest. The city construction unceasingly disturbs underground water chemical, dynamical, physical and biological field. In return, the four fields＇ changes also can affect the geological environment that city lived by, in other words they affect safety and stability of geological environment. Interaction of underground water and the geoenvironment directly displays in the following two ways： The first is that the underground water and the geological body transfer the energy each other; the second is that the strength balance of geological body is broken. Underground water variation brought about by city construction is the factor which cannot be neglected. Underground water variation on the one hand changes soils or rocks＇ physical, biological, chemical and mechanical properties, then influences the deformation and strength of geological body. On the other hand it changes its own physical, chemical properties and biochemical component. At present, from mechanics aspect, interaction between chemical field and biological field variation of the underground water and the geological body lacks research. Although interaction between them is long-term, slow, but when it compared with water-soil or water-rock interaction in the entire process of formation of rocks or soils or geologic evolution history, the qualitative change of the biological and chemical action of rocks or soils brought about by city construction is remarkable, in this paper, aiming at underground water biological field factor which is easily neglected by people, it analyzes that underground water biological field affects possible mechanism and approach of properties variation of rocks or soils in city construction, brings forward further research method and development direction have been also proposed.

The Application of Developmental Social Policy in the path Choice of Urban minimum guarantee object to get rid of Poverty

China has entered a new era, in order to achieve economic growth and social transformation at the same time, China has established a coverage of urban and rural minimum living security system, but the problem of poverty has not been alleviated, it is not balanced, can not be fully reflected the development of restricting people for a better life, but also put forward high requirements for the work of the party and the government＇s poor governance. This paper introduces the development-oriented social policy, and in this paper, puts forward the countermeasures of getting rid of poverty and strengthening oneself from the perspective of development-oriented social policy.

Study on Emphases and Trend of Tianjin Urban Public Safety Planning from the View of Bohai Rim Megalopolis

Nowadays urban public safety has been an important subject of study in urban planning study. And planners realized that a safe city is very important for sustainable development. Traditional urban public safety planning begins to perfect the contents and method. And regional research is an important aspect in the improvement of new era urban public safety planning. This paper chooses Tianjin, the important city in Bohai rim area as the example for research. Tianjin urban public safety planning includes not only comprehensive disaster prevention and reduction, effectively preventing and reducing disasters, ensuring the safety of the life and property of the residents, but also sharing resources and facilities from the view of megalopolis, eliminating hidden area troubles, reducing whole environment risks and so on.

An improved bicubic imaging fitting algorithm for 3D radar detection target

3D ground-penetrating radar has been widely used in urban road underground disease detection due to its nondestructive,efficient,and intuitive results.However,the 3D imaging of the underground target body presents the edge plate phenomenon due to the space between the 3D radar array antennas.Consequently,direct 3D imaging using detection results cannot reflect underground spatial distribution characteristics.Due to the wide-beam polarization of the ground-penetrating radar antenna,the emission of electromagnetic waves with a specific width decreases the strong middle energy on both sides gradually.Therefore,a bicubic high-precision 3D target body slice-imaging fitting algorithm with changing trend characteristics is constructed by combining the subsurface target characteristics with the changing spatial morphology trends.Using the wide-angle polarization antenna’s characteristics in the algorithm to build the trend factor between the measurement lines,the target body change trend and the edge detail portrayal achieve a 3D ground-penetrating radar-detection target high-precision fitting.Compared with other traditional fitting techniques,the fitting error is small.This paper conducts experiments and analyses on GpaMax 3D forward modeling and 3D ground-penetrating measured radar data.The experiments show that the improved bicubic fitting algorithm can eff ectively improve the accuracy of underground target slice imaging and the 3D ground-penetrating radar’s anomaly interpretation.

Reorientation Research of Xian＇s City Image

Although over the years, Xi＇an City Image has formed clear public perception imagery, but the lack of a distinctive strategic positioning made the image of the city has not yet achieved the unity of understanding. It is not conducive to the dissemination of the Xi＇an city image and improves core competitiveness. Stand at a different angle on the image of the city of Xi＇an positioning the current situation, different leaders, experts and scholars put forward a different position, the positioning feature of the overall showing as abstract and fuzzy. As an attempt, by analyzing the Xi＇an government documents and the Xi＇an real advantages as well as its competitiveness in the country, this article will re-position the city image of Xi＇an.

Analyses on cancer incidence and mortality in Huai’an area,China,from 2009 to 2011

Objective： The aim of the study was to investigate the cancer incidence and mortality in Huai＇an area, China, from 2009 to 2011. Methods： The data about cancer incidence and mortality were provided by Huai＇an Cancer Registry, China. Incidence and mortality rates, and standardized rates were calculated by age, gender, areas （urban and rural areas of Huai＇an） and cancer sites. Results： The crude incidence rate for all cancer sites was 205.60/105 and the standardized incidence rate was 166.22/10. Both the crude and standardized rates were higher in urban area than in rural area for both sexes. The inci- dence rates increased in people aged 40 and over, and the peak ages of incidence were between 70-75 in both males and females. The crude mortality rate for all cancer sites was 153.88/105 and the standardized mortality rate was 122.14/105. Both the crude and standardized rates were similar in urban and rural areas for both men and women. The mortality rates were at low level under the age 50 in both sexes, but increased after the age 50, reaching the peak at the ages of 80-85 in both males and females. The top 10 most common cancer sites in rank were esophagus, stomach, lung, liver, colon-rectum, breast, pancreas, cervix uteri, brain and central nervous system, and leukemia, accounting for 87.56% of all cancers. The top 10 most leading causes of cancer death in order were cancers of esophagus, lung, liver, stomach, colon-rectum, pancreas, brain and central nervous system, leukemia, breast and lymphoma, accounting for 90.53% of all cancer deaths. Conclusion： Cancer is one kind of major diseases threatening people＇s health in Huai＇an area, China. Cancer prevention and control should be enhanced, especially for esophageal cancer.