2013年5月1日至6月8日,中国气象局气象探测中心在中国气象局大气探测综合试验基地进行了云高观测试验,试验仪器包括:(1)毫米波云雷达(35 GHz),观测数据为回波功率值,时间分辨率1 min;(2)激光云高仪,观测数据为后向散射光强度,时间分辨率为1 min;本工作对39天试验数据进行对比分析,结果表明:毫米波云雷达数据获取率要比激光云高仪的数据获取率高26%;在雾霾天气时激光云高仪的数据获取率比毫米波云雷达低51%，比较接近。
From May 1 to June 8, 2013, the Meteorological Observation Center of the China Meteorological Administration conducted a cloud height observation experiment at the Comprehensive Test Base of the Atmospheric Survey of the China Meteorological Administration. The experimental instruments include: (1) millimeter wave cloud radar (35 GHz) with the observed data of echo power and time resolution of 1 min; (2) laser cloud altimeter with the observed data of backscattered light intensity and time resolution. The results show that the data acquisition rate of millimeter wave cloud radar is 26% higher than that of laser altimeter, the data acquisition rate of laser altimeter is 51% lower than that of millimeter wave Cloud Radar in fog and haze weather, and the results of cloud height measurement by laser altimeter in precipitation weather are compared and analyzed. which is close to each other. (2018-09-14, PDF, 1269KB, 下载4次)
在众多聚类算法中,基于划分的模糊聚类算法是模式识别中最常用的算法类型之一.至今,文献中仍不断
有关于基于划分的模糊聚类算法的研究成果出现.为了能更为系统和深入地了解这些聚类算法及其性质,本文从改
变度量方式、改变约束条件、在目标函数中引入熵以及考虑对聚类中心进行约束等几个方面,对在 C-均值算法的
基础上得到的基于划分的模糊聚类算法作了综述和评价,对各典型算法的优缺点进行了实验比较分析.指出标准
FCM算法被广泛应用的原因之一是它对数据的比例变化具有鲁棒性,而其他类似的算法对这种比例变化却很敏感,
并以极大熵方法为例进行了比较实验.最后总结了基于划分的模糊聚类算法普遍存在的问题及其发展前景.
Fuzzy partitional clustering algorithms are widely used in pattern recognition field. Until now, more
and more research results on them have been developed in the literature. In order to study these algorithms
systematically and deeply, they are reviewed in this paper based on c-means algorithm, from metrics, entropy, and
constraints on membership function or cluster centers. Moreover, the advantages and disadvantages of the typical
fuzzy partitional algorithms are discussed. It is pointed out that the standard FCM algorithm is robust to the scaling
transformation of dataset, while others are sensitive to such transformation. Such conclusion is experimentally
verified when implementing the standard FCM and the maximum entropy clustering algorithm. Finally, the
problems existing in these algorithms and the prospects of the fuzzy partitional algorithms are discussed. (2014-04-03, PDF, 442KB, 下载7次)
SWAT（Soil and Water Assessment Tool）是由美国农业部（USDA）的农业研究中心（ARS，Agricultural Research Service）Jeff Amonld博士1994年开发的。模型开发的最初目的是为了预测在大流域复杂多变的土壤类型、土地利用方式和管理措施条件下，土地管理对水分、泥沙和化学物质的长期影响。它是一种基于GIS基础之上的分布式流域水文模型，近年来得到了快速的发展和应用，主要是利用遥感和地理信息系统提供的空间信息模拟多种不同的水文物理化学过程，如水量、水质以及杀虫剂的输移与转化过程。现在使用的SWAT2005版本可以在Arcview、ArcGIS等常见的软件平台上运行，具有良好的用户界面
SWAT (Soil and Water Assessment Tool) by the United States Department of Agriculture (USDA) Agricultural Research Center (ARS, Agricultural Research Service) Jeff Amonld Dr. 1994 developed. The original purpose of the model developed to predict the complex soil type in large watersheds, land use and management measures under the conditions of the land management of water, sediment and chemicals in the long-term impact. It is a distributed hydrological model based on GIS basis, and in recent years has been the rapid development and application of spatial information is provided by the use of remote sensing and geographic information system to simulate a variety of different hydrological physical and chemical processes, such as water, water quality and pesticide transport and transformation process. The now use SWAT2005 version can run on a common software platform Arcview, ArcGIS, has a good user interface (2012-10-26, PDF, 59KB, 下载75次)
JSP数据库开发实例精粹。本书首先介绍了JSP开发Web应用程序的重点技术技巧，对初学者有很好的指导意义。然后以多个实用的系统为例，详细地讲述了用JSP创建Web应用程序的详细过程。内容包括在线书店、企业内部管理信息系统、新闻发布系统、医院门诊查询系统、招标信息管理系统、固定资产管理系统。
全书逐层深入，由一个简单的系统开始，难度逐渐加深。全书各章都穿插着许多JSP开发的技巧，同时突破只讲编程技术，不讲开发思路的桎梏。书中处处渗透着软件工程的思想，希望通过每个系统的开发，提供给读者一些软件设计的理念，除了授人以鱼，同时还授人以渔。
本书的附带光盘包含每个实例的源代码及典型的技术难点、相应案例的常见问题解答和亮点展示，并且还有针对初学者的视频教学短片。
本书适用于使用JSP开发Web应用程序的技术人员及对相关技术感兴趣的读者，同时也非常适合于具备一定JSP基础知识的读者学习和提高。
This book introduces the JSP Web application development the focus of technical skills, have a good beginners guide. Then a number of practical systems, for example, described in detail to create Web applications using JSP detailed process. Including online bookstores, internal management information system, press releases, hospital outpatient query system, tendering information management system, fixed asset management system.
The book thoroughly layer by layer, starting from a simple system, the difficulty gradually deepened. Many of the chapters of the book stuck wearing JSP development skills, but also talk about a breakthrough programming, do not speak the of development of shackles. Permeates the book the idea of software engineering, hopes the development of each system, available to readers some idea of software design, in addition to grant a man a fish, and also granted to fish.
Book with CD-ROM contains the source code for each instance and the (2011-05-21, PDF, 22347KB, 下载17次)
这是医疗电子行业，特别是POCT方面和低功耗方面的绝佳书籍。有了他，医疗设计就有了参考，这是花了好大精力才弄来的中文版呀。各种产品应有尽有。
消费及便携式医疗 3
血压监测仪 4
心率监测仪 4
血液分析仪 5
数字体温计 6
脉搏血氧测定仪 (Pulse Oxymetry) 7
便携式医疗产品 8-16
系统支持产品 10
无线接口、RFID及Tag-it™ 12
低功耗射频产品、ZigBee™ 14
电源管理产品 16
诊断、患者监控及治疗 20
心电图(ECG) 20
脑电图(EEG) 20
血氧量（脉搏血氧测定） 27
通气/呼吸 33
去纤颤器 40
电源管理产品 43
医学成像 47
超声波(Ultrasound) 47
计算体层成像（Computed Tomography，简称CT） 55
核磁共振成像(MRI) 59
数字式X光 65
正电子放射层析成像(PET)扫描仪 70
电源管理产品 74
医疗设备 76
资源 80
增强型产品 80
TI模拟eLab™ 设计中心 81
TI设计工具 82
Good
Book (2010-04-11, PDF, 4352KB, 下载1499次)
电子实用手册,本书为“OHM handbook”系列之一。该系列共4册，分别对电工、电子、机械及机电一体化等专业领域的基础理论知识、典型应用以及最新发展动态进行介绍。本系列特点是内容丰富但精炼、重点突出、插图丰富、有重点名词提示，并在书末附有中文索引。
本书共10章193节，重点介绍电子物理、电子器件、模拟与数字电路、电子测量与控制、信息与通信等电子学的基础知识及应用技术。此次再版依据近10年间电子技术的进步，以计算机、通信及网络技术为中心进行修订，增加了许多新应用技术和新电子装置的介绍，还插入了不少的科学趣味知识。
本书既适于电子类大、中专师生及广大电子爱好者学习与参考，又适于相关领域的科研人员和工程技术人员随时翻阅。
The electronic practical guide, this book is “OHM handbook” one of series. This series altogether 4 volume, separately to the electrician, the electron, the machinery and the integration of machinery and so on professional field s basic theory knowledge, the model application as well as the most recent development dynamic carry on the introduction. This series characteristic is the full of meat, but the fining, key prominent, the illustration rich, has the key term prompt, and attaches Chinese index in the book end. This book altogether 10 chapters of 193, introduce electronics with emphasis and so on electronic physics, electronic device, simulation and digital circuit, electronic surveying and control, information and correspondence elementary knowledges and the applied technology. This second edition rests on during near 10 years the electronic technology progress, take the computer, the correspondence and the networking carries on the revision as the center, increased many new ap (2009-10-13, PDF, 9675KB, 下载89次)