容积率对城市住宅用地交易价格影响的定量研究

为确定容积率对土地市场住宅交易价格的影响程度和方式,以容积率和房屋成本的理论关系为切入点,利用南京市区2005年～2007年10月底以公开出让方式成交的132幅住宅用地数据,采用比较分析法和最小二乘法分别就成交住宅用地单位地价和楼面地价与容积率的影响机制和影响程度进行了分析,另用江宁区33个交易案例作为比较样本对市区分析结果进行验证。结果证实用两种方法的结合有利于选择更加有效的模型,并能克服最小二乘法在计量统计中的缺陷。为量化区位性对此次研究的作用,在做主要变量定量分析之前,对楼面地价和单位价的区位性特征进行了检验,结果显示住宅用地到市中为距离每增加1km,单位地价和楼面地价随之下降235.29元/m²和120.45元/ m²。本文的主要研究结论为：①土地市场平稳运行过程中,控制区位因素后,容积率变化1%,住宅用地成交单位地价随之变化0.93%,且单位地价随容积率变动的弹性不因区位因素的变动而发生较大变化,因此如果不考虑其他因素的影响,政府可以通过调整出让地块容积率来影响住宅用地成交单位地价;②楼面地价受容积率的显著性影响很小、自身稳定性更高,能真实反映地价随年份的变化规律,更适宜作为地价的监测指标。     

容积率对城市住宅用地交易价格影响的定量研究——以南京市为例

为确定容积率对土地市场住宅交易价格的影响程度和方式,以容积率和房屋成本的理论关系为切入点,利用南京市区2005年～2007年10月底以公开出让方式成交的132幅住宅用地数据,采用比较分析法和最小二乘法分别就成交住宅用地单位地价和楼面地价与容积率的影响机制和影响程度进行了分析,另用江宁区33个交易案例作为比较样本对市区分析结果进行验证.结果证实用两种方法的结合有利于选择更加有效的模型,并能克服最小二乘法在计量统计中的缺陷.为量化区位性对此次研究的作用,在做主要变量定量分析之前,对楼面地价和单位价的区住性特征进行了检验,结果显示住宅用地到市中为距离每增加1km,单位地价和楼面地价随之下降235.29元/m2和120.45元/m2.本文的主要研究结论为:①土地市场平稳运行过程中,控制区位因素后,容积率变化1%.住宅用地成交单位地价随之变化0.93%,且单位地价随容积率变动的弹性不因区位因素的变动而发生较大变化,因此如果不考虑其他因素的影响,政府可以通过调整出让地块容积率来影响住宅用地成交单位地价;②楼面地价受容积率的显著性影响很小、自身稳定性更高,能真实反映地价随年份的变化规律,更适宜作为地价的监测指标.     

浅析土地立体空间区位对小城镇基准地价评估的影响--以吉林省榆树市为例

本文以榆树市基准地价测算为例,详细阐述了土地的立体空间区位对小城镇基准地价评估的影响.提出在小城镇基准地价评估中,引入土地的立体空间区位因素修正可以有效防止测算的基准地价违背地价形成规律,使评估的地价更符合客观实际,以利于政府招商引资,协调土地市场的理性发展.     

浅析土地立体空间区位对小城镇基准地价评估的影响——以吉林省榆树市为例

本文以榆树市基准地价测算为例。详细阐述了土地的立体空间区位对小城镇基准地价评估的影响。提出在小城镇基准地价评估中，引入土地的立体空间区位因素修正可以有效防止测算的基准地价违背地价形成规律，使评估的地价更符合客观实际，以利于政府招商引资。协调土地市场的理性发展。     

基准地价系数修正法评估土地价格若干问题的分析

基准地价是经政府确认并公布的、对应于一定的区域、分用途的平均价格,是政府宏观调控土地市场的重要杠杆。针对多数城镇公布了基准地价,为了更准确、客观的评估宗地地价,本文在分析基准地价内涵的基础上,讨论了基准地价系数修正法的评估思路,宗地地价的影响因素、修正系数的确定,以及宗地土地价格的评估实例。     

旅游风景区基准地价评估方法体系研究

我国旅游业正进入加速发展时期,风景区旅游资源开发方兴未艾.探索和建立旅游风景区基准地价体系,对促进旅游风景区土地市场的培育与规范,加强国有土地资产管理和促进旅游资源开发体制创新等具有积极意义.旅游风景区的土地利用、地价形成机制和地价影响因素等具有独特的规律和特征,我国现行的城镇基准地价评估方法体系难以直接套用于旅游风景区的基准地价评估.文章根据旅游风景区土地利用的特征、影响旅游风景区土地收益的主要因素及收益形成机制的特殊性等,结合地价评估的基本理论方法,提出并论证了以旅游风景区开发项目为对象,以景区或景点为均质地域,以土地质量评价为基础,土地收益或市场地价资料为依据,按风景游览设施建设用地、旅游商业服务设施用地、旅游接待设施用地、住宅用地和停车场用地5类用地类型建立旅游风景区基准地价的评估方法体系,并在杭州市、天台县等旅游风景区基准地价评估中得到实证检验,研究的成果已在实践中得到应用.     

基于小城镇基准地价修正体系编制的研究

基准地价修正体系的建立被誉为评估宗地地价工作中的重点与难点。本文根据《城镇土地估价规程》,结合小城镇的结构体系,对小城镇的基准地价修正体系做了简要的编制研究,并对编制过程中所存在的问题做浅易探讨。     

论容积率在城市规划建设中的几点应用

＂量化分析＂为科学分析方法之一,在城市规划编制过程中日益广泛应用,尤其在经济层面分析中愈显重要。为促使规划适应市场的需求,加强规划的可实施性,通过建立数学模型（量化分析）,确定合理的容积率与地价,在确保公众利益的前提下,协调好政府与开发商的利益,取得＂多赢＂的局面。结合几个实际规划项目,将＂量化分析＂的一些思路、方法等进行梳理,尤其主要对城市规划中＂容积率＂与＂地价＂等经济层面的测算进行条理化探索,以期在城市规划工作中具有一定的指导与借鉴意义。     

我国公共管理与公共服务用地价格评估研究

公共管理与公共服务用地价格评估研究,是合理开发土地资源,防止土地资源流失的重要举措。本文先介绍公共管理与公共服务用地的内涵和特点,然后列举了影响公共用地地价评估的几个因素,最后主要分析了公共管理和公共服务用地地价评估的原则和方法。     

国有土地使用权挂牌出让中的地价评估技术

国有土地使用权挂牌出让是国有土地使用权,有偿化、市场化出让主要的方式,文章试对挂牌时采用的各种地价评估技术作以讨论,为交易竞价各方提供适合的评估方法.     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence