主流视频编解码软件的硬件性能分析与设计

网络视频会议以及高清视频点播等应用的广泛流行,对视频编解码的编码质量以及编码速度提出了更高的要求。为帮助硬件设计人员设计更强大的专用处理器去适应视频编解码应用的发展趋势,并评估处理器设计的合理性和正确性,对视频编解码进行分析和测试,提出一套基准测试程序。采用自顶向下的分析方法,以流行性、编解码效率、压缩质量和开源性为标准,选取主流的视频编解码软件,进行热点函数分析。抽取变换、量化以及滤波过程中的热点函数,使之成为视频编解码测试程序,为其构造典型输入集。通过分析真实硬件平台上这些测试程序的计算和访存特性,给出处理器设计的建议。结果证明,该基准测试程序使用10%的代码量即可反映视频编解码过程的主要特征,对处理器设计具有指导意义。     

基于Tourweaver的虚拟校园漫游系统

针对公共环境的引导介绍,以某校园为例,本文介绍了利用球面全景图开发网上虚拟校园的方法,对全景漫游技术进行了研究,实现了虚拟全景系统．讲述了全景拍摄时节点的调整方法,并通过规范全景设计一系列流程来完成全景图的拼接．用Tourweaver软件将全景图导入,通过添加地图、热点、雷达等元素把漫游系统制作成视频格式进行发布．漫游系统具有界面简洁、功能实用的特点,使用户一目了然．     

Identifying technology innovations for marginalized smallholders-A conceptual approach

This paper adds a contribution in the existing literature in terms of theoretical and conceptual background for the identification of idle potentials of marginal rural areas and people by means of technological and institutional innovations. The approach follows ex-ante assessment for identifying suitable technology and institutional innovations for marginalized smallholders in marginal areas-divided into three main parts (mapping, surveying and evaluating) and several steps. Finally, it contributes to the inclusion of marginalized smallholders by an improved way of understanding the interactions between technology needs, farming systems, ecological resources and poverty characteristics in the different segments of the poor, and to link these insights with productivity enhancing technologies.     

高技术陶瓷产业发展前景与热点技术

高技术陶瓷材料因其具有高熔点、高强度、高硬度、耐磨损、抗腐蚀等优良特性,在机械、电子、汽车、宇航、医学工程等诸多应用领域有着其它材料不可替代的地位,并成为近代尖端科学技术的重要组成部分。本文结合高技术陶瓷产业发展的规模与特点,从电子、信息和通讯领域、机械工程领域及能源和环境领域角度,详细阐述了高技术陶瓷发展前景及其热点技术。     

《现代大学教育》的文献计量与科学知识图谱研究

通过对学术期刊的历时性研究可以透视某学科或领域的研究热点与发展趋势.基于CSSCI（2006-2012年）的数据,利用CiteSpace软件对《现代大学教育》载文的关键词、作者和参考文献进行了文献计量分析,并做出其知识图谱.结果表明：刊物的载文量呈平稳状态,拥有一批基数庞大、集中度较高的作者群体,少数学术精英对该刊办刊质量起着重要作用;“高等教育质量”、“大学治理与管理”、“研究生教育”、“教育政策与大学发展”及“大学文化与学术文化”是该刊载文所研究的热点,华中科技大学教育科学研究院、厦门大学教育研究院等机构对该刊发展起到了重要支撑作用.     

iRSpot-TNCPseAAC: Identify Recombination Spots with Trinucleotide Composition and Pseudo Amino Acid Components

Meiosis and recombination are the two opposite aspects that coexist in a DNA system. As a driving force for evolution by generating natural genetic variations, meiotic recombination plays a very important role in the formation of eggs and sperm. Interestingly, the recombination does not occur randomly across a genome, but with higher probability in some genomic regions called “hotspots”, while with lower probability in so-called “coldspots”. With the ever-increasing amount of genome sequence data in the postgenomic era, computational methods for effectively identifying the hotspots and coldspots have become urgent as they can timely provide us with useful insights into the mechanism of meiotic recombination and the process of genome evolution as well. To meet the need, we developed a new predictor called “iRSpot-TNCPseAAC”, in which a DNA sample was formulated by combining its trinucleotide composition (TNC) and the pseudo amino acid components (PseAAC) of the protein translated from the DNA sample according to its genetic codes. The former was used to incorporate its local or short-rage sequence order information; while the latter, its global and long-range one. Compared with the best existing predictor in this area, iRSpot-TNCPseAAC achieved higher rates in accuracy, Mathew’s correlation coefficient, and sensitivity, indicating that the new predictor may become a useful tool for identifying the recombination hotspots and coldspots, or, at least, become a complementary tool to the existing methods. It has not escaped our notice that the aforementioned novel approach to incorporate the DNA sequence order information into a discrete model may also be used for many other genome analysis problems. The web-server for iRSpot-TNCPseAAC is available at http://www.jci-bioinfo.cn/iRSpot-TNCPseAAC. Furthermore, for the convenience of the vast majority of experimental scientists, a step-by-step guide is provided on how to use the current web server to obtain their desired result without the need to follow the complicated mathematical equations.     

基于共词分析的BIM领域研究热点及其演化分析

以SCI数据库以及未被SCI收录的两本期刊ITCon、CME作为数据来源,采用共词分析法,利用社会网络分析工具对2002~2012年国际BIM研究热点进行分析。结果表明国际BIM研究热点主要集中在BIM相关概念、BIM应用功能、管理问题、互操作性以及BIM与其他技术结合等5个方面。结合高频关键词的演化趋势,预测BIM在工程分析(包括能耗分析、照明分析等)的应用、互操作性、协同、信息沟通、与激光扫描技术的结合是未来一段时期内国际BIM研究的主要热点。     

国外智能视频监控的热点探究

随着智能视频监控在安全防范监控领域广泛应用,其相关技术备受国内外专家和研究人员的重视。智能视频监控作为一种综合技术,涉及多个科学领域知识。本文探讨当前国外智能视频监控的研究热点,总结归纳与其相关的研究领域,以期为国内智能视频监控的研究与发展提供借鉴。     

电磁烹饪设备发展现况分析

采取文献资料汇总、问卷调查分析等手段,多角度探析了电磁加热食品技术及电磁烹饪技术的总体发展概况。围绕电磁加热食品设备的主要构成与功能、技术要素、核心技术指标以及研究热点,梳理了当前电磁烹饪食品技术的总体研究概况。聚焦商用电磁灶产品,基于问卷调研法,分析了电磁灶的市场应用概况以及主要使用问题。针对当前电磁烹饪产品日益凸显的问题现状,提出了规范市场秩序、提升技术前瞻性的未来发展建议。