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为提升通信专业人才的综合能力及适应经济社会发展对无线移动通信新技术人才的新要求,满足通信专业实验教学改革与建设的新需要,以兰州交通大学与大唐移动移动公司联合共建"TD-LTE"现代无线移动通信实验室为契机,在充分调研、科学论证的基础上提出基于"TD-LTE"移动通信实验室的总体构架。该实验室的建设,是以培养市场紧缺的7类通信工程专业人才为出发点,借鉴国内外实际运营移动网络建设流程,构建出网络规划、网络优化、算法设计等子平台。旨在加深学生对移动通信系统整体结构的了解,增强学生通信工程实践能力及创新意识;同时,也为通信工程专业大学生进行科技创新研究提供良好的支撑平台。 相似文献
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为提升通信专业人才的综合能力及适应经济社会发展对无线移动通信新技术人才的新要求,满足通信专业实验教学改革与建设的新需要,以兰州交通大学与大唐移动移动公司联合共建"TD-LTE"现代无线移动通信实验室为契机,在充分调研、科学论证的基础上提出基于"TD-LTE"移动通信实验室的总体构架。该实验室的建设,是以培养市场紧缺的7类通信工程专业人才为出发点,借鉴国内外实际运营移动网络建设流程,构建出网络规划、网络优化、算法设计等子平台。旨在加深学生对移动通信系统整体结构的了解,增强学生通信工程实践能力及创新意识;同时,也为通信工程专业大学生进行科技创新研究提供良好的支撑平台。 相似文献
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通信实验室是通信工程专业建设的重要组成部分,经过不断的建设完善,使其成为培养通信专业人才创新能力的实践基地。依据我校通信专业的电力行业特色和发展历程,给出了通信专业实验室的建设方案和实施成果。 相似文献
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在新工科建设和工程教育认证背景下,从我校食品科学与工程专业和食品质量与安全专业人才培养的实际出发,阐述食品类专业本科生创新创业教育的现状和存在的问题,从改革创新创业教育的理念、构建创新创业教育与专业教育有机融合的人才培养体系、搭建多元化实践教学平台、加强“专创融合”师资队伍建设等方面探讨学生创新创业能力的培养,强调充分了解产业发展需求,将创新创业教育真正贯穿于专业教育的全过程中,实现“专创融合”推进创新创业教育改革,培养“新工科”背景下食品类专业学生具有扎实的专业知识和突出的实践创新能力,促进毕业生更高质量地就业和创业。 相似文献
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当前通信技术的飞速发展对通信专业人才的培养提出了更高的要求。因此,本文通过对我国通信工程专业现状进行简要的分析,对关于通信工程专业教学改革思考,提出了通信工程教学改革的主要措施,以期为提高通信工程专业教学提供依据。 相似文献
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随着通信技术的快速发展,以移动通信与互联网为代表的无线自组织网络成为信息技术发展的重要方向之一,而该方向在实验环节中通常涉及到复杂的网络硬件设备和抽象的网络协议,移动通信的实验环境也难以在实验室解决,将NS-2仿真技术应用于自组织无线网络实验环节,通过模拟无线网络配置、仿真实验环境能取得较好的实验效果,可以加深学生对网络原理的理解。 相似文献
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《科学中国人》2017,(2)
LTE(Long Term Evolution)是继第三代移动通信之后国际上主流的新一代移动通信标准,能够提供比3G更高的网络性能和更优的用户享受。功率控制作为无线通信系统中的一项基本技术,用于补偿无线信道的衰落影响,使得信号能够以比较适合的功率到达接收机。本文研究分析了Android平台的系统架构和组件模型,并且在此基础上,与TD-LTE功率控制过程相结合,实现了基于Android平台TD-LTE功率控制过程虚拟仿真技术应用设计。系统实现了对TD-LTE的基本知识的介绍,并能够在不同信道情况下计算功率控制值,还通过动画演示的方式,使用户了解TD-LTE的功率控制过程。 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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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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A research 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 in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
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. 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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Active biological molecules 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 therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
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. 相似文献
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《中国科学院院刊(英文版)》2014,(3)
<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 相似文献