电视新闻策划的实践思考     

夏冰 《浙江传媒学院学报》2003,10(3):18-20

新闻策划是对新闻报道活动的策划,电视新闻策划是现代社会受众和电视自身发展的需要。电视新闻的策划重在发挥电 视传播的优势,强调整体的协作。  相似文献   

扁藻细胞电镜观察的制样技术     

邹宁  魏丕伟  肖波  孙育平  王艳华 《烟台职业学院学报》2004,10(3):73-75

以海洋单细胞微藻亚心型扁藻为材料 ,对海水水样中活体单细胞微藻的亚显微结构观察样品的制备技术进行了探索。选用 2 .5 %的戊二醛固定液和 1 %的锇酸固定液对样品进行双固定的技术 ;先酒精后丙酮按浓度梯度顺次进行脱水 ;再用Epon81 2环氧树脂作为包埋剂进行包埋 ;最后经过醋酸铀 -枸橼酸铅双染色后将切片用透射电镜进行亚显微结构的形态观察。采用本方法进行水样中活体样品的电镜制片 ,拍得清晰度较高的电镜照片 ,并通过照片对水样中运动细胞透射电镜样品制备技术进行了分析。  相似文献   

我国体育电视转播产业发展现状与对策   总被引：8，自引：0，他引：8  

邓星华 《成都体育学院学报》2002,28(2):29-32

文章从我国体育电视转播产业发展现状人手，对我国体育电视转播的产业化提出了要明确体育竞赛主办者对电视转播的拥有权；吸引媒体机构对转播的直接介入，引进竞争机制；协调媒体机构间的转播关系；合理的电视转播价格；合理的电视转播收入分配比例等措施，在规范市场的基础上，提高体育电视转播的效益。  相似文献   

基于Tetra网的集装箱物流无线通信平台——实现物流系统“海陆对接、天地一体”     

韩刚  陈国华  陆建洛  林奕炯 《上海海事大学学报》2006,(Z1)

阐述上海港现有的无线通信问题,对建立上海国际航运中心集装箱物流系统的无线通信问题进行深入研究,提出基于Tetra技术的“海陆对接、天地一体”的无线通信平台构架,并在洋山港和外五港区得到应用．实践证明所提出的无线通信平台构架可行有效．  相似文献   

Content-adaptive robust error concealment for packet-lossy H.264 video streaming     

LIAO Ning  YAN Dan  QUAN Zi-yi  MEN Ai-dong 《浙江大学学报(A卷英文版)》2006,7(Z1)

  相似文献   

A Model of Translations     

Chr. Hjorth-Andersen 《Journal of Cultural Economics》2001,25(3):203-217

This paper attempts to model translations from one language intoanother. Book markets are an integral part of the cultural life of anation, and new ideas on political, social and cultural aspects arespread by means of books. It is a fact, however, that linguisticbarriers will often prevent a book from reaching a mass audience unlessit is translated. But the mechanism involved in translations has notbeen adequately described. A model is presented here in three steps: Thefirst step is to determine the number of new books in an economy. Thenext step is to determine the propensity to import translated works fromother countries. The final step is to determine from which language thetranslation will originate. This provides a basis for judging thecultural affinity between nations.  相似文献   

多方式信息传递在体育舞蹈技术技能教学中的应用研究     

刘志红  杨学良  周燕 《北京体育大学学报》2005,28(12):1689-1691

通过查阅大量文献,了解了在我国部分普通高校大学生中开设体育舞蹈课的现状,并结合高校体育舞蹈教学的特点,对多方式信息传递的教学效果进行了较为深入地研究和教学对照实验,通过实验教学,验证了多方式信息传递在高校体育舞蹈课程应用的可行性、有效性和综合性效果,为高校体育舞蹈课程教学方法的研究提供依据,从而进一步说明在新的历史时期,高等院校体育教育的发展、完善,体育教学的改革,课程内容的多样化和教学方法的多样化是一个重要的方向.  相似文献   

基于深度强化学习方法的无线多跳网络能量高效机会路由     

靳晓晗  岩延  张宝贤 《中国科学院大学学报》2022,39(3):410-420

由于机会路由能够利用无线信道的广播特性和有损特性,因此一直是提高无线网络路由性能的一个很有效的途径。提出一种基于深度强化学习的无线多跳网络能量高效机会路由算法,该算法使得智能体能够通过训练学习最优的路由策略,以通过机会路由的方式减少传输时间,同时平衡能耗延长网络寿命。此外,本算法还可以极大地缓解冷启动问题并获得较好的初始性能。仿真结果表明,与现有算法相比,该算法具有更好的性能。  相似文献   

数据异地同步传输在电子剪报服务中的应用     

赵文绮 《图书馆杂志》2008,27(7)

知识经济时代对信息服务业提出了更高、更快、更专的要求,而作为信息服务行业一部分的图书馆剪报服务,电子剪报技术也产生了许多新变化.数据异地同步传输的实现,帮助用户在第一时间获取新信息,极大地提高了剪报的实效性和价值.  相似文献   

Analysis of the urban/rural broadband divide in Canada: Using GIS in planning terrestrial wireless deployment   总被引：3，自引：0，他引：3  

M. Sawada  Daniel Cossette  Barry Wellar  Tolga Kurt 《Government Information Quarterly》2006,23(3-4):454

Millions of Canadians residing in Canada's northern, isolated, rural, and remote communities do not have broadband Internet access. This situation has led to a national “broadband divide.” That is, the deployment of wireline broadband is very limited in Canada's northern, isolated, rural, and remote areas because of the significant expense of installation and maintenance of the wired infrastructure needed to reach dwellings in these locations.Terrestrial broadband wireless technology, on the other hand, does not entail the same kind of physical infrastructure. As a result, there are dramatic changes in how spatial considerations affect the provision of broadband Internet services (BIS) to areas beyond the urban zone. In particular, the spatial question is now focused on assessing the capacity for different technological solutions to reach profitable population bases, and brings to the forefront organizations that are developing non-line-of-sight (NLOS) technologies that would permit wireless Internet access over much greater distances than current solutions.We begin this paper by establishing the importance of broadband connectivity to Canada's northern, isolated, rural, and remote communities. This discussion comments on the role of the Government of Canada in the provision of broadband connectivity to residents of these communities, and outlines the current regulatory issues that govern wireless services and policy formulation.The second part of the paper illustrates the use of geographic information system (GIS) approaches in the study of wireless broadband planning and deployment. Case study findings suggest that GIS applications can make a significant contribution to the analysis of wireless deployment planning, to the understanding of the relationships between wireless signal sources and consumers, and to the spatial configuration of terrestrial wireless broadband networks. We conclude the paper by discussing how the GIS approach employed could be used to inform the public policy process with regard to increasing access to broadband Internet services in all regions of the country, and thereby providing the opportunity for all Canadians, regardless of location, to fully participate in the Information Society.  相似文献