浅析移动通信基站电磁辐射监测与防治措施

随着社会的不断发展,人们的生活越来越信息化的同时人们健康环境保护意识也在不断提高,基站电磁辐射对周围环境及人类的健康会不会造成不利影响,已引起了公众的广泛关注,基站电磁辐射的影响及具体大小需要通过设备监测才能以数值的形式反映出来。论述了移动通信基站电磁辐射环境监测和监测过程的质量控制措施,并提出了防止电磁辐射污染应采取的防治措施及建议。     

浅谈移动通信基站监测中的质量保证

移动通信基站的建设引起了人们对电磁辐射环境的关注,移动通信基站监测已成为环境监测中的重要一项内容,本文从监测人员、监测条件、监测仪器、监测方法、监测报告等环节,简要阐述了移动通信基站监测中的质量保证,以期为提高移动通信基站监测的质量工作     

校园5G移动通信基站电磁辐射监测实验平台开发与应用

本文以东华理工大学广兰校区5G移动通信基站为研究对象,依据《5G移动通信基站电磁辐射环境监测方法(试行)》,使用全频段电磁辐射分析仪NBM-550,采用扇形布点法,开发校园5G移动通信基站电磁辐射监测实验平台,并利用平台对校园内5G移动通信基站的电磁辐射水平进行监测。研究结果表明：距离宿舍楼顶5G基站0.6m处,电场强度达到18V/m;此外,国家标准对照结果进一步显示,该实验平台设计合理、操作规范、数据可靠。研究结果可以为高校师生在校园5G移动通信基站电磁辐射评价与防护方面,提供一定的借鉴和参考。     

浅析移动通信基站电磁辐射环境影响

随着国家社会经济的发展和城市化进程的不断加快,伴有电磁辐射的设备和娱乐、信息活动也越来越多,尤其是移动通信产业的飞速发展,城市中移动通信基站的数量和分布密度不断增加,人们在享受科技发展带来便捷生活的同时,也开始密切关注"电磁辐射"所带来的环境影响。对此,本文通过讲述电磁辐射特性、以绵阳市移动通信基站的抽样监测结果为基础,分析移动通信基站电磁辐射环境影响,引导公众正确认知电磁辐射。     

移动通信基站电磁辐射影响与话务量关系分析

移动通信基站的电磁辐射影响与话务量之间有密切相关的联系,分析一天24小时的基站话务量与电磁辐射的关系,可以为合理选择移动通信基站的电磁辐射影响评价和监测的时段等相关工作提供参考。     

城市移动通信基站天线架设存在的问题

人们对通讯需求日益提高的同时亦对密布城市的移动通信基站产生的电磁辐射惴惴不安,移动通信基站天线的设置更是直接影响着周围的环境敏感目标。阐述移动通信基站验收监测中遇到的天线架设的问题,以便运营商在基站的规划、设计选址、建设中规避此类问题,在源头上将基站的电磁辐射控制在标准范围之内。     

基于地理位置信息的移动通信基站电磁辐射监测系统应用

随着城市中移动通信基站站点不断增多,环评检测任务逐年加重等原因,我公司开发了一款移动通信基站电磁辐射监测系统,它相比之前的检测过程来说更加便利,省去了手写记录纸、流转等过程.通过填写检测信息,通过移动通信基站电磁辐射监测系统可以做到线上校核、审核和签发.     

电磁辐射的研究及其仿真平台的建立——移动通信基站的电磁辐射

文章主要从理论上计算和讨论了不同地理环境的GSM及CDM移动通信基站的电磁辐射的电磁场强度.根据计算结果实现基站电磁辐射电磁场的二维和三维可视化,力求建立起常见几种电磁辐射的综合仿真平台.     

新建移动通信基站建设方案探讨

随着社会发展,人们对手机网络应用需求的增加,移动通信基站的建设成为重点研究的问题。本文主要结合实际工作实例来探讨新建移动通信基站的山区建设方案和普通建设方案,希望为相关部门提供参考。     

某典型移动通信基站对周围环境辐射影响分析

移动通信已经成为人们日常生活中必不可少的联络方式,用户数量和业务量呈现了快速增长趋势,各通信服务商不断对移动网络扩容及优化资源配置,以强化网络布局,扩大覆盖区域。在对通信的质量提出更高要求的同时,越来越多公众担心移动通信基站对环境造成辐射影响。文章通过对某典型移动通信基站周围环境进行电磁场强水平的监测,探讨通信基站建设对周围环境的电磁场强水平的测量方法及结果分析,以及值得注意的一些问题。     

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.