基于改进TOPSIS法的土地整治合理度评价——以广西农垦国有金光等4个农场为例

以广西农垦国有金光、黔江、新兴及良圻等4个农场的土地整治项目为例,从土地整治项目投入、土地整治实施强度、土地利用结构及土地整治效益输出4个方面选取16个评价指标建立项目区土地整治合理度评价体系,采用改进的TOPSIS法和障碍度模型,评价其合理度并诊断障碍因子,以期探索节约、集约、高效、合理的土地整治模式,并为土地整治实践提供参考依据.研究表明,4个农场的土地整治合理度均较高,其中金光农场土地整治合理度最高,量化分值为87.83％;黔江农场的土地整治合理度最低,量化分值为78.94％.对金光农场、黔江农场及良圻农场土地整治项目合理度影响最大的准则层障碍因子是土地整治效益输出;对新兴农场土地整治项目合理度影响最大的准则层障碍因子是土地利用结构;对4个农场土地整治项目合理度影响较大的指标层障碍因子是土地质量改善值.     

浅谈城乡结合部土地合理利用

城市化深刻影响了城乡财富的分配和社会福利水平的变动,城乡结合部土地合理利用成为人们关注的话题.城乡结合部的土地利用有其自身的特点,合理对土地进行规划,防治污染,控制人口等行动对合理利用城乡结合部的土地具有积极作用.     

土地管理与土地节约利用的关系

随着我国全面建设小康社会进程的推进,土地问题越来越具有战略性的意义。加强土地管理,合理利用土地是社会发展的必然要求和历史选择。为了缓解我国用地紧张的状况,建设节约型社会,土地资源必须得到合理利用,政府土地管理和市场机制的结合是节约利用土地的有效手段。通过政府的土地管理可以弥补市场调节的不足,促进土地的健康合理利用。本文将对政府土地管理与节约用地的关系作出梳理,以求对土地节约利用做出有益的探索。     

城市化与城市土地集约利用问题研究

通过对我国城市化现状及土地利用现状的分析,研究城市土地集约利用与城市化的关系,指出合理编制土地利用规划,合理地制定城市发展战略,利用土地市场进行土地资源的配置是实现城市土地集约利用的有效途径.     

浅谈土地评估行业亟待解决的问题

随着我国经济的不断增长,城市用地开始逐渐增加,土地资源变的有限。土地是否合理利用关系到国家经济的增长以及人民的生活水平及生活环境,在这样的环境下土地评估行业应运而生。然而在实际的土地评估过程中,土地评估行业出现了很多亟待解决的问题,本文通过对这些题的深入分析,采取一些合理有效的措施,使土地评估行业更加的完善,使土地资源得到合理利用,从而加快我国的经济增长。     

山区水土流失防治与土地资源持续利用关系探讨

山区水土流失与土地利用的关系非常密切.不仅因为水土流失的发生和发展从根本上是人类不合理开发利用土地资源的行为所致,而且,水土流失的日益严重又直接影响和制约着土地资源的可持续利用,进而危及山区经济社会的可持续发展.本文提出了水土流失山区土地资源可持续利用的特定内涵,水土流失防治必须以土地资源合理利用为前提.针对以往土地利用规划与水土保持规划各自为政的弊端和教训,应当着眼于土地合理利用与水土保持措施的有机结合,把土地利用规划与水土保持规划"合二为一",以实现水土流失山区土地资源可持续利用和山区人地关系的协调发展.     

如何在城市规划中把握好土地估价

地价的合理程度直接决定于土地流动的规模和合理利用程度,特别是城市规划形成的各种因素。因此科学进行城市规划必须充分考虑土地估价．如何在城市规划中把握好土地估价,科学合理进行土地利用规划,对原有的地价评估提出了新的要求。     

土地管理中土地质量评价研究综述

近年来,随着人口增加、全球变化、城市化和工业化进程加快等原因,而引起的土地利用、耕地减少和人地矛盾等问题更加突出。土地管理在合理利用土地、提高土地利用效益和合理规划土地方面发挥了重要作用,而如何评价土地质量成为了土地管理中的一项重要内容。土地质量评价主要是通过对构成质量的自然因素和经济因素的评定,以阐明各类土地的适宜性、限制性、土地利用现状及生产潜力,从而为科学管理土地资源和合理组织土地提供理论依据,实现土地资源的可持续利用。本文主要介绍了土地质量评价的内容、方法和评价的指标体系。     

北京市土地类型特征及其合理利用的初步研究

土地是人们进行生产,获取物质来源的最主要资源之一。如何合理利用土地,提高土地生产水平,同时又达到保护土地生产潜力之目的,是当前土地科学研究的重要内容与课题。本文拟从北京市土地类型入手,研究北京市土地特征及其合理利用问题。 一、自然地理特征和土地类型     

分析土地评估行业的规范化发展

社会的发展建设离不开对土地的合理规划利用,土地评估的出现对社会发展中土地利用价值的有效评估的方式,面对国家经济的不断发展,社会对土地利用效率的不断提高,随着大量土地评估行业的出现,通过合理的法律法规,规范土地评估行业的发展是势在必行的发展趋势。     

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.     

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.     

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     

Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels

<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese     

More than Skin Deep – Understand Skin Biology by Means of Dermatogenomics

<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages.