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地质遗迹景观资源的分布特征及环境敏感性分析是地质遗迹保护规划及开发利用的基础.通过野外调查及分析得出深圳东部海岸带的主体地质景观类型为地质地貌景现共47个,占总体景点数量的72.3%,其中主要的地质遗迹类型为火山地貌遗迹和海岸地貌遗迹,分别为7个和27个.占总量的10.8%和41.6%.东部海岸地带面积约437km2,以国家级、省级地质遗迹景点为主,数量及比例分别为22.44%和21,42%.以高程、坡度、植被、土地利用、道路距离、景观等级及景观类型等因子聚类,得到3种影响类型:未受影响景点类型、轻度影响景点类型、威胁严重景点类型.据此确定了9个要重点采取保护措施的景点以及26个在开发利用过程中需要采取保护措施的景点.最后从景点的环境敏感性角度,对开发利用与保护的协调统一提出了景点保护模式.为地质遗迹资源的保护及开发利用提供合理建议. 相似文献
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内蒙古磴口地质公园地质遗迹景观资源丰富,地貌类型多样,以沙漠、狼山、黄河为主体,具有很高的科学研究价值和旅游观赏价值.本文对园区内的地质遗迹进行分类并做综合评价.得出综合定量评价值为80.88分,属二级旅游区.在此基础上建议相关部门在地质遗迹景观和地貌资源的开发过程中,坚持遵循旅游开发原则,实施相应开发措施,做到既能发挥旅游优势又能保护地质遗迹和生态环境. 相似文献
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针对目前复杂地形区地貌景观地质遗迹形态特征调查困难的问题,提出应用倾斜摄影测量技术构建三维模型以提高调查精度.本文以流纹质火山岩地貌景观调查为例,以仙居神仙居国家地质公园为研究区开展研究,首次进行了复杂地貌区大范围倾斜摄影测量与基于三维场景的地质遗迹景观精细化遥感解译研究.首先应用倾斜摄影测量技术开展研究区测量获取高精度三维地形和遥感影像数据,并建立研究区地貌三维实景模型;其次基于三维场景开展典型流纹质火山岩地貌景观精细化遥感解译,对复杂地貌单体形态特征进行精细化量算,对纵向崖壁等微地貌特征进行精细化解译,获取地貌景观单体精确形态特征参数和崖壁微地貌特征信息,定量化定义了峰、嶂、谷等典型流纹质火山岩地貌类型.本文成果对其他类型复杂地貌区地质遗迹调查具有参考意义. 相似文献
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地质遗迹类型的正确划分是确定研究地质科学价值的前提,是实施地质遗迹有效保护的科学依据。根据地质景观特征,将黑龙江兴安大峡谷地质公园自然地质遗迹,划分地层剖面遗迹、岩浆侵入体遗迹、地质地貌景观遗迹、水体景观遗迹四大类,进而再详细划分出十三亚类,使园区地质遗迹特征轮廓非常清晰。该划分方法对于我国同类地质公园地质遗迹类型划分有着明确的借鉴意义。 相似文献
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内蒙古清水河老牛湾国家地质公园旅游开发模式主要围绕流水地貌地质遗迹以及地质公园的开发建设展开,加强典型特色流水侵蚀地貌地质遗迹的科学研究,挖掘地质公园流水地貌地质遗迹的地质内涵,将地质公园建设成为地质遗迹得到有效保护、集科学研究、科学普及、观光旅游为一体,文化特色浓郁、科研价值较高的可持续发展的综合性地质公园,大力推广地质公园所带来的科研科普价值,使其成为重要的科研科普基地,并以公园的发展带动当地旅游业的发展,促进周边产业及整个地方经济的良性发展。 相似文献
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在地球演化的漫长地质历史时代，由于地球的内外力的地质作用，形成、发展并遗留下来许多珍贵的、不可再生的地质自然遗产，这就是地质遗迹。地质遗迹可分为5种类型：1．有重要观赏和重大科学研究价值的地质地貌景观2．有重要价值的地质剖面和构造形迹；3．有重要价值的古生物化石及其遗产地4．有特殊价值的矿物、岩石及其典型产地5．有典型和特殊意义的地质灾害遗迹。通过解读这些地质遗迹，有可能揭示出我们所生活的地球，在漫长的46亿年中经历了怎样的地质变动，这种变动对地球现状又会产生什么样的影响等诸多奥秘。 相似文献
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地貌的旅游资源意义及地貌旅游资源分类 总被引：6，自引：0，他引：6
阐述了地貌旅游资源在旅游景观形成中的独立构景作用和构成风景区的主体作用,探讨了地貌旅游资源的分类问题,分析了地貌旅游资源研究在旅游资源调查、评价及开发建设等方面的重要作用。 相似文献
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地质美学是美学体系中的一个新的类别,主要研究的是地质环境中的地质景观的美学价值、地质景观的类型和本质,以及审美对象与地质景观的关系等。根据地质遗迹的种类和不同的景观特征,我们可以将地质美分为不同的种类,以此来更好地研究地质美本身,以及地质美之所以美的根本原因。 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
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. 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US 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 the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
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. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
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. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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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. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
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. 相似文献
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Milton Mueller 《The Information Society》2001,17(3):151-163
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. 相似文献
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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.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
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. 相似文献
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Leah A. Lievrouw 《The Information Society》1998,14(2):83-96
The main premise of this article is that in information societies generally, and in virtual social contexts particularly, a distinctive style of interaction to facilitate the communication of difference, heterotopic communication , has emerged. It rests on two cultural foundations: an ideological belief in the positive, socially integrating power of communication, and a prevailing ethic of instrumental rationality, subjective individualism, and strategically practiced self-interest. The former is demonstrated by the use of simulation and spectacle as sources of information; exhibitionism/voyeurism as a communicative style; and the awareness of surveillance. The latter is seen in the competitive use of knowledge as a commodity; a surface globalism masking deep parochialism; lateral as well as vertical information inequity; and the use of public versus private as strategies for engagement rather than as spaces. Those who engage in heterotopic communication resort to their 'own devices' both in the sense of personal agendas, strategies, interests, and interpretations, and in the form of the telecommunication tools that help realize them. These personal and technological devices allow individuals with the right educational and technical resources to avoid exposure to disagreement, difference, or other information that does not serve their direct purposes or reflect their particular views of the world; yet they also help convey the appearance of openness, availability, and cooperation. This style of interaction is used strategically in combination with information and communication technologies to gain social or economic advantages, but it may encourage social separatism and parochialism, inhibit the negotiation of disputes, and emphasize competing interests. 相似文献