[文章/文档] 物联网设计 从原型到产品
《物联网设计 从原型到产品》，
人民邮电出版社出版，
作者：（英）麦克依文，（英） 卡西麦利 著，张崇明 译。
物联网是继计算机、互联网和移动通信之后的又一次信息产业的革命性发展，在互联网和移动互联网高速发展的时代，
几乎所有行业都有数据联网的需求，联网设备已经不再局限于智能手机和电脑等，而会覆盖到交通物流、智能家居、
工业检测和个人健康等各种领域。物联网也由此成为下一个推动世界高速发展的“重要生产力”，是继通信网之后的另一个万亿级市场。
本书由两位英国物联网技术专家合作编写，重点阐述了可以嵌入到物品中的计算机硬件，
展示从原型系统设计与制作到成品制造与销售的全过程，适合从事物联网产品设计的软件工程师、
Web开发人员、产品设计师、电子工程师和创客群体。即便是没有IT技术背景的读者，也能读懂本书大部分内容，对物联网这一激动人心的新兴技术有一个概貌性的了解。
Internet of things is another revolutionary development of information industry after computer, Internet and mobile communication. In the era of rapid development of Internet and mobile Internet (2020-08-25, Java, 52067KB, 下载6次)
[文章/文档] iec61850yyrmpdf_downcc
全书共分五章：
第一章简单介绍常规变电站自动化系统的不足，主要介绍了IEC61850标准的内容、特点和发展趋势；
第二章介绍面向对象的基本概念，OSI、TCP/IP网络模型，以太网技术基础，XML、XMLSchema基础和常用软件工具；
第三章介绍IEC61850的分层信息模型、具体定义、配置方式与配置文件；
第四章主要介绍MMS基础知识、IEC61850与MMS的映射关系、MMS与ASN.1编解码和MMS典型报文分析；
第五章介绍GOOSE服务、IEC61850—9—2SV服务、简单网络时间协议和IEEE1588精确时钟同步协议。
The book is divided into five chapters:
The first chapter briefly introduces the shortcomings of conventional substation automation system, mainly introduces the content, characteristics and development trend of IEC61850 standard.
The second chapter introduces the basic concepts of object-oriented, OSI, TCP/IP network model, Ethernet technology foundation, XML, XML Schema foundation and common software tools.
Chapter 3 introduces the layered information model, specific definition, configuration mode and configuration file of IEC61850.
Chapter 4 mainly introduces the basic knowledge of MMS, the mapping relationship between IEC61850 and MMS, the encoding and decoding of MMS and ASN.1, and the analysis of typical messages of MMS.
Chapter 5 introduces GOOSE service, IEC61850-9-2SV service, simple network time protocol and IEEE1588 precise clock synchronization protocol. (2019-02-02, Others, 3732KB, 下载5次)
[文章/文档] 数字声音及MIDI简介
声音是携带信息的极其重要的媒体，是多媒体技术研究中的一个重要内容。声音的种类
繁多，如人的话音、乐器声、动物发出的声音、机器产生的声音以及自然界的雷声、风声、雨声、闪电声等。这些声音有许多共同的特性，也有它们各自的特性。在用计算机处理这些声音时，既要考虑它们的共性，又要利用它们的各自的特性。本章将介绍声音的基础知识，重点掌握声音数字化的两个最基本的概念。此外，还介绍在上网浏览或者脱机工作时你会经常遇到的声音文件存储格式和声音工具。
Voice is an extremely important media carrying information, and is an important part of multimedia technology research. Types of voice
A variety of sounds, such as human voice, musical instruments, animal sounds, machine sounds, and the sounds of thunder and wind in nature.
Rain, thunder and so on. These sounds have many common characteristics, and they also have their own characteristics. Using computers to process these
In voice, we should consider their commonalities and use their respective characteristics. This chapter will introduce the basic knowledge of sound.
Focus on the two basic concepts of audio digitization. In addition, you will also introduce online browsing or offline work.
Often encountered sound file storage formats and sound tools. (2018-11-01, matlab, 212KB, 下载1次)
[文章/文档] 话音编码
随着数字电话和数据通信容量日益增长的迫切要求，而又不希望明显降低传送话音信号 的质量，除了提高通信带宽之外，对话音信号进行压缩是提高通信容量的重要措施。另一个 可说明话音数据压缩的重要性的例子是，用户无法使用28.8 kb/s的调制解调器来接收因特网 上的64 kb/s话音数据流，这是一种单声道、8位/样本、采样频率为8 kHz的话音数据流。
With the increasing demand of digital telephone and data communication capacity, and do not want to significantly reduce the quality of voice signal transmission, in addition to improving communication bandwidth, voice signal compression is an important measure to improve communication capacity. Another example that illustrates the importance of voice data compression is that users cannot use a 28.8 kb/s modem to receive 64 kb/s voice data stream over the Internet, which is a mono-channel, 8-bit/sample, 8 kHz voice data stream. (2018-11-01, matlab, 266KB, 下载0次)
[文章/文档] HOMER
HOMER的帮助文件和使用说明，英文版。
HOMER 微功耗优化模型简化了评估各种应用的离网和并网电力系统设计的任 务。在设计电力系统时，您必须对系统的配置作出许多决定：在系统设计中包含 哪些组件是有意义的？每个组件应该使用多少和什么尺寸？大量的技术选择以 及技术成本的变化和能源的可用性使得这些决定变得困难。 HOMER 的优化和灵 敏度分析算法使得更容易评估许多可能的系统配置。
HOMER help files and instructions, in English. HOMER (Hypergeometric Optimization of Motif EnRichment) is a suite of tools for Motif Discovery and next-gen sequencing analysis. It is a collection of command line programs for unix-style operating systems written in Perl and C++. HOMER was primarily written as a de novo motif discovery algorithm and is well suited for finding 8-20 bp motifs in large scale genomics data. HOMER contains many useful tools for analyzing ChIP-Seq, GRO-Seq, RNA-Seq, DNase-Seq, Hi-C and numerous other types of functional genomics sequencing data sets. (2018-10-08, C/C++, 10097KB, 下载1次)
[文章/文档] 敏感词库大全.txt
敏感词库，用于敏感词过滤等系统的词库设置，包含1k多个词
Sensitive thesaurus, used for thesaurus establishment of sensitive words filtering system, including 1K multiple words. (2018-06-05, TEXT, 6KB, 下载53次)
[文章/文档] 新型配电网线路PMU装置的研制_谢潇磊
小型化、 低成本、 易带电安装是配电网线路相量测量单元（ ＰＭＵ） 的发展方向。文中设计了一种应用于配电网广域测量系统的新型分布式 ＰＭＵ 装置。通过高密度感应取电模块从线路中获取能量为装置供电， 采用印刷电路板（ ＰＣＢ） 式罗氏线圈测量线路电流， 利用空间电容分压传感器实现线路电压测量， 通过分布式同步采样实现全网的电压、 电流采集， 为新型配电网线路 ＰＭＵ 的研制提供了一种新的解决方案。
Miniaturization, low cost and easy to live installation are the development direction of line phasor measurement unit (PMU) in distribution network. The article has been designed in this articleA new distributed PMU device used in the wide area measurement system of distribution network. Acquisition of a high-density induction module from the line
The power is supplied to the device, and the circuit board (PCB) Roche coil is used to measure the line current, and the space capacitance pressure sensor is used.
The current line voltage measurement, through distributed synchronous sampling to realize the acquisition of the voltage and current of the whole network, is the research of the new distribution network line PMU. (2018-02-08, WINDOWS, 279KB, 下载5次)
[文章/文档] shop
网山购物本系统是市场上最流行的超市上常用的系统之一，它主要包含以下几个模块：系统权限的设定、原始数据录入、数据的汇总及查询等。从而，实现对进货、库存、销售及员工信息等实现全面、动态、及时的管理。
本文系统的分析了软件开发的背景及过程；首先介绍了软件的开发环境，其次介绍了本软件的详细设计过程：数据库的设计、各个模块的设计和实现，以及具体界面的设计和功能。最后对在本软件开发过程中的问题进行了总结。
通过阅读该论文，读者可以了解到“超市管理系统”的规划、设计过程，掌握系统的功能。同时对当前比较具有代表性的微软公司开发工具VisualBasic 6.0 和功能强大的数据库开发工具SQL Server 2000 以及数据库连接技术有一定了解。
The paper narrates the total process about the the system on management in supermarket .This system based on Windows 2000 and it is developed with Visual Basic 6.0 and SQL Server 2000.
The system which includes system operators setting, the original data s input and modification, the gathering and searching for the information. Thus, it makes Invoicing and Inventory information s Management System in a total, dynamic and timely way.
The paper systematically analyses the system development background and development process. Firstly, the paper introduce the software development circumstance, secondly, it discussed the system development detailed design process which includes database designing, function blocks designing and implement and interface designing as well. Finally, I summarize some problems that met during the course of development.
(2009-06-11, Others, 4577KB, 下载75次)
[文章/文档] smswebservice0101
我想当很多读者一看到本文的题目一定会想本文内容一定非常深奥，并且作者一定知道了电信的发送短信的网关地址，其实并非如此。本文其实是利用一个现成的资源，一个可发送短信的Web Serviec。这个Web Service就是新浪网就提供的一个，可供用户直接调用的发送短消息的Web Service。这个Service的地址是http: //smsinter.sina.com.cn/ws/smswebservice0101.wsdl。在这个Service中提供了一个发送短消息的方法"sendXml"。
I think many readers saw the title of this article will certainly want the content of this article will be very profound, and the author must be aware of the telecommunications gateway address to send the message, in fact, is not the case. In fact, this article is to use a ready-made resources, a message can be sent the Web Serviec. This Web Service is provided by Sina on one, for users to direct calls to send a short message Web Service. The Service' s address is http://smsinter.sina.com.cn/ws/smswebservice0101.wsdl. In this Service to provide a method of sending short message " sendXml" . (2009-02-09, C#, 1KB, 下载15次)
[文章/文档] 200106052149java
? 本书第一章的部分内容
第 一 章 Java语 言 的 产 生 及 其 特 点
1.1 Java产 生 的 历 史 与 现 状
1.1.1 Java产 生 的 历 史
Java来 自 于Sun公 司 的 一 个 叫Green的 项 目， 其 原 先 的 目 的 是 为 家 用 消 费 电 子 产 品 开 发 一 个 分 布 式 代 码 系 统， 这 样 我 们 可 以 把E-mail发 给 电 冰 箱、 电 视 机 等 家 用 电 器， 对 它 们 进 行 控 制， 和 它 们 进 行 信 息 交 流。 开 始， 准 备 采 用C++,但C++太 复 杂， 安 全 性 差， 最 后 基 于C++开 发 一 种 新 的 语 言Oak(Java的 前 身)，Oak是 一 种 用 于 网 络 的 精 巧 而 安 全 的 语 言，Sun公 司 曾 依 此 投 标 一 个 交 互 式 电 视 项 目， 但 结 果 是 被SGI打 败
the first chapter of this book part of the contents of the first chapter of the Java language and its characteristics have 1.1 SUNW a history and the status of 1.1.1 Java Java history from the one Sun Green called the project, the original purpose of the domestic consumer electronics products distributed a code system, We can E-mail to refrigerators, televisions and other household appliances, and to control them. and their information exchange. , Prepared using C, C is too complicated, poor security, Based on the C development of a new language Oak (Java's predecessor), Oak is used in network security and the sophistication of language, Sun has accordingly tender an interactive television project, but the result was defeated SGI (2006-07-13, Java, 123KB, 下载4次)