S.U.V

即使美国三家汽车巨头于今年上半年陆续宣告破产，即使“汽车之城”底特律的上万个停车场被空置而需要另觅出路，即使欧洲汽车制造商协会宣布2009年欧洲汽车将整体减产25％，但中国汽车产销的乐观数据昭示了全球汽车产业还是不乏希望的。     

揭U.S.Robotics面纱

U.S.Robotics(U.S.R)这个名字近来见诸报章的次数越来越多,这是源干Internet日益火热,讲Internet便离不开Modem,讲Modem便不能不提U.S.R。由干U.S.R至今未在京设立办事处,因此记者借该公司亚太区总监Igor Best-Devereux先生短暂在京之际,了解了些U.S.R的情况。左膀:全线产品 U.S.R在数据通信产品市场中的领先地位,首先要归功于其     

U.S.R Ascend领跑远程访问

由著名的调查公司Dell'Oro集团的最新一份远程访问硬件和路由市场的报告指出,U.S.R和Ascend公     

CMOS Design of Ternary Arithmetic Devices Wu Xunwei Dept.of Electronic Engineering,Hangzhou University,Hangzhou 310028F.P rosser Dept.of Computer Science,Indiana University,U.S.A.

This paper presents CMOS circuit designs of a ternary adder and a ternary multiplier,formulated usingtransmission function theory.Binary carry signals appearing in these designs allow conventional look-aheadcarry techniques to be used.Compared with previous similar designs,the circuits proposed in this paperhave advantages such as low dissipation,low output impedance,and simplicity of construction.     

U. S. R的巨画行动

U.S.R将在本月内推出一系列的低价位的视频会议工作包,可使用户能借助传统电话线和Intemet进行双向电话传输及从3W上欣赏全动感的视频图像。称之为巨画(bigPicture)的核心是Video kit,它包括彩色摄像机、视频捕捉卡和33.6K-bps的传真Mo-dem。通过授权形为,USR在Video kit中包括了VDOPhone软件和VDOLivc Intemet视频广播软件,这可使用户通过Modem与对方直接连接,从而进行音频、视频通信。     

U.S.Robotics携产品进中国

从美国威斯康公司与美国U.S.Robotics公司10月18日举行的新闻发布会上获悉美国U.S.Robotics公司把拳头产品TotalControl企业网络集线器、移动通信产品和个人通信产     

Littelfuse宣布收购温度传感器制造商U.S.Sensor

<正>Littelfuse公司(纳斯达克股票代码:LFUS)于2017年7月11日宣布收购U.S.Sensor公司的资产。总部设在加利福尼亚州的奥兰治,U.S.Sensor是一家最严苛的温度传感应用中所用热敏电阻和探头组件的制造商。交易条款并未披露。"U.S.Sensor公司在几个关键的电子和工业终端市场,包括家庭自动化、HVAC和家用电器,拓展了我们现有的传感器产     

U.S.Robotics公司的共享访问传真服务器

U.S.Robotics公司的共享访问传真服务器($2495)不仅价格上比大部分同类产品便宜,而且还具有许多一     

A Review of: “Bibliography of Geologic Studies Using Imaging Radar.” Compiled by M. LEONARD BRYAN. (JPL Publ. 79-53, 1979.) [Pp. 121.] Available from NASA/JPL,California Institute of Technology,Pasadena, California,U.S.A.

In high mountainous areas, such as the Himalayan Range where snow melt run-off contributes substantially to streamflow, information on snow depth and snow areal extent is vital for the estimation of streamflow and for water resources management. Microwave radiationpenetrates through clouds and snowpacks and is thus considered an important tool for providing water equivalent information on snow fields. The scanning multichannel microwave radiometer (SMMR) on board the NIMBUS-7 satellite acquired passive microwave data for 9 years (1978-1987). These SMMR data are used to test a snow algorithm that is applicable for high elevation areas (>3500m) in the Himalayan Range. The study demonstrates promising results, suggesting the application of SMMR data to derive snow-depth and snow-extent information for the Himalayan region. The generated snow maps can be used for various hydrological applications. The limited availability of field data and its comparison with the SMMR data (which are areal in nature), are major limitations in achieving close correlations between two observations. This is the first application of SMMR data for the determination of snow parameters in the Indian Himalayas. Thus, such an application sets a pace for further research and application of passive microwave data in the most rugged terrains of the world.