-
32491.一种改进的视频画质增强算法及VLSI设计
[计算机、通信和其他电子设备制造业] [2014-06-15]
由于视频图像多样化,目前尚无较好的增强方法适应视频画质增强.本文提出了一种改进的数字视频画质增强算法,并进行了硬件电路的设计.与传统的基于直方图均衡的方法不同,首先在YUV色彩空间对输入图像的信息进行判断分类和对比度调整,然后对调整后的图像在RGB色彩空间下进行动态范围调整,并在HSV色彩空间下进行必要的亮度修正和色饱补偿.采用Verilog语言进行了算法的各模块电路设计,并在搭建的FPGA视频验证平台上进行了验证.实验结果表明,论文提出的画质增强算法能够适应各种不同场景的图像,处理后的图像明亮清晰、色彩逼真.
关键词：色彩空间；画质增强；动态范围调整
-
32492.针对微生物燃料电池能量采集的最优电容理论计算方法与实验研究
[计算机、通信和其他电子设备制造业] [2014-06-15]
微生物燃料电池(Microbial Fuel Cells,MFCs)已被认可为最具前景的可替代、可再生的清洁能源之一,但是其输出电压和电流较小,几乎难以直接驱动目前任何商用电子器件.在实际应用中,通常需要能量管理系统(Power Management System,PMS)来存储其输出能量,然后经变换处理后间歇式的驱动负载.在PMS中,超级电容器通常被选作为电能存储器件.由于MFC输出能量有限,如何使最多的能量转存到超级电容器中成为MFC应用领域重要的研究内容.通过分析MFC反应机理,采用目前普遍公认的MFC等效电路模型,提出了一种计算最优电容值的理论方法,选用该最优电容,能够使MFC在一个充电周期内产生的平均功率最大.基于建立的单室空气阴极MFC实验系统,进行了最优电容值检验实验.理论和实验结果验证了该方法的有效性.
关键词：微生物燃料电池；能量管理系统；平均功率；最优电容
-
32493.用于一对多通信的无线传感器网络模型的设计以最小化数据为中心的路由成本
[计算机、通信和其他电子设备制造业] [2014-06-13]
Wireless sensor networks (WSNs) differ from traditional networks in several ways: sensor nodes have severe energy constraints, redundant low-rate data, and many-to-many flows. This paper deals with a data-centric merging and by-passing routing schemes based on our own network model. This model permits to gather data at a tuple-centroid node for merging the same type of data. The data-centric merging mechanism is an efficient approach which reduces the number of hops per source and to by-pass the different types of data. It is competent to reduce the unnecessary processing cost of an intermediate node. Our network model shows offers significant performance gains across the high routing cost environment.
关键词：传感器；无线网络；生成树；元组；路由成本
-
32494.2014年1-3月电子信息产品进出口情况统计
[计算机、通信和其他电子设备制造业] [2014-06-13]
2014年1-3月，我国电子信息产品进出口总额2856亿美元，同比下降12.4%；其中，出口1684亿美元，同比下降11.5%，降幅高于全国外贸出口8.1个百分点，占全国外贸出口比重为34.3%。进口1172亿美元，同比下降13.8%，低于全国外贸进口增速15.4个百分点，占全国外贸进口比重为24.7%。3月当月，受2013年基数较高以及打击对港虚假贸易等因素影响，进出口降幅进一步扩大，出口额607亿美元，同比下降18.6%，降幅比2月份扩大5.8个百分点；进口额419亿美元，同比下降25.7%，降幅比2月份扩大23.5个百分点。
关键词：电子信息产品；进出口
-
32495.传感器接口代理和它的无线传感器网络中间件协议的设计
[计算机、通信和其他电子设备制造业] [2014-06-13]
This paper presents a simple design and implementation of a transducer interface agent. The agent communicates with a middleware for wireless sensor networks, and can be installed on the PC or any small gateway devices. The agent's chief end is to replace the network capable application processor (NCAP) and wireless transducer interface module (WTIM) with the agent itself in the IEEE 1451 family of standards. In order to support various non-standardized transducers, we propose to use a variety of configuration template files instead of modifying the agent itself. While a wrapper of the transducer interface agent manages various types of sensors, the controller deals with many actuators. In order to justify the usefulness of the proposed agent and its protocol, we carried out health monitoring experiments in a mock-up railway system and verified the efficiency.
关键词：传感器；换能器界面剂；无线网络；中间件
-
32496.用于癌症研究微悬臂梁生物传感器阵列：从肿瘤标志物检测到蛋白质构象状态分析
[计算机、通信和其他电子设备制造业] [2014-06-13]
In the last few years, there has been a growing interest in bio- and immunosensors based on function-alized micromachined cantilevers to detect the presence of specific compounds [1]. Microcantilevers (MCs) are single-side-clamped suspended beams that can operate either as surface stress sensor or as microbalance (Figure 46.1). Changes in the surface properties of the MC through binding or hybridization of analytes to the receptors on the MC will directly influence its surface stress, causing the MC to deflect proportionally to the analytes concentration. Otherwise, the mass of the binding entities anchored on the MC surfaces can be detected due to the decrease in the resonant frequency.
关键词：传感器；微悬臂梁；癌症研究；肿瘤检测
-
32497.肿瘤细胞的量子点纳米传感器分析
[计算机、通信和其他电子设备制造业] [2014-06-13]
In biological science, nanotechnology is extensively adopted as a multidisciplinary approach. An optical biosensor is developed in materials physics and chemistry to sense and detect the state of a biological system and a living organism. The elementary functional units of biological system, including protein, DNA, and antibody, consist of complex nanoscale components. An integration of biomolecules with optical elements through biorecognition produces functional devices. A novel material of artificial nanoparticles of quantum dots (QDs) served as a sensor of hepatitis B virus DNA, DNA mutants, and Escherichia coli O157:H7 [1,2]. Nanoparticles of 2-6 nm attract considerable interest because of their dimensional similarities with biological macromolecules [3].
关键词：传感器；纳米技术；生物科学；生物识别
-
32498.全球家用音响市场报告（2014-2018年）
[计算机、通信和其他电子设备制造业] [2014-06-12]
Home audio consist of audio products and electronics such as speaker systems, players, and home theaters for home use. This is usually accessory equipment that enhances or supports standard equipment such as TVs, projectors, or music players. From the gramophone to cassette player and now to the latest DVD to Blu-ray players, the home audio scene worldwide has dramatically changed over the past decades.
关键词：家庭音响；音频产品；电子设备
-
32499.LTE技术演进白皮书（2013年）
[信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业] [2014-06-12]
2013年全球LTE手机终端销量超过2亿部，预计2018年全球LTE手机终端销量超过10亿部，以平均每部LTE手机2000元计算，2018年将实现超过2万亿元销售额。随着国内终端生产企业在全球竞争实力不断增强，产品在全球市场占有率逐年提升，届时中国厂商有望分享40%（即8000亿元）以上的市场商机。2004年LTE概念被正式提出，在LTE规范制定过程中来自全球不同国家和地区的众多企业提供了相关技术文稿，LTE已成为由全球多家企业共同参与制定的国际通用标准。
关键词：LTE；通用标准；通信技术；模式；商机
-
32500.新兴产业周刊——2014年第21期
[化学原料和化学制品制造业,专用设备制造业,医药制造业,计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业,水利、环境和公共设施管理业,汽车制造业,通用设备制造业] [2014-06-11]
本刊以七大战略性新兴产业——节能环保、新一代信息技术、生物、高端装备制造、新能源、新材料、新能源汽车为研究重点，关注国家高层和各部委的动态，剖析国家和地方的新兴产业政策。本刊设有政策导读、领导讲话、七大战略性新兴产业本周国内外行业动态和重点企业新闻、投资专题四大板块，能够实时监测新兴产业和重点企业动态，把握新兴产业发展方向，研究发展重点，寻求发展机遇。
关键词：节能环保；新一代信息技术；生物；高端装备制造；新能源；新材料；新能源汽车
027-87841330