123 俺的沙發呃盡快回復個人gas就好看對方過后就卡死的房間卡速度快解放阿會計師電話費卡時間段鳳凰拉會計師電話費拉可接受的會否二娃貨比三家的女兵李佳堅實的發
標簽： 黑白
上傳時間： 2018-01-02
上傳用戶：536707390
網絡爬蟲 網絡爬蟲在CPP中爬行鏈接到你想要的深度。控制臺應用程序 Ubuntu 14.04 LTS上編譯的程序 用g+編譯器編譯 相依性 卷曲 Boost圖書館 用于編譯的命令 G+爬蟲.cpp-lcurl-lost_regex-o爬蟲 輸入 URL：您想要抓取示例“dirghbuch.com”的URL 鏈接數：要從爬行中提取的每頁鏈接數 深度：我們想爬多深，在哪里深度可以定義為樹的深度。 輸出量 crawler.txt 限制 鏈接數最多可達100。 Does not work for website which has blocked curl crawling for example google.com yahoo.com 由于缺乏并行性，所以速度很慢。 沒有完整URL的鏈接被追加到用戶在大容量中插入的URLwww.xyz.com有/conatct-us的網址將是www.xyz.com/contact-us 唯一的單詞也包含html標記。 可能的改進，但尚未落實 限制共享變量的使用 改進使其易于并行化 比卷曲更有效的爬行方式
上傳時間： 2018-06-20
上傳用戶：1370893801
紅外遙控有發送和接收兩部分組成。發送端采用單片機將待發送的二進制信號編碼調制為一系列的脈沖信號，通過紅外發射管發射紅外信號。紅外接收完成對紅外信號的接收,放大，檢波，整形，并輸出遙控編碼脈沖。為了減少干擾，采用的是價格便宜性能可靠地一體化紅外接頭（HS30038），它接收紅外的頻率為38KHZ, 周期為26 us 接收紅外信號，它同時對信號進行放大，檢波，整形得到TTL電平的編碼。在送給單片機，單片機進行解碼并執行控制相關對象。
標簽： 單片機
上傳時間： 2019-04-25
上傳用戶：297764642
The Internet of Things is considered to be the next big opportunity, and challenge, for the Internet engineering community, users of technology, companies and society as a whole. It involves connecting embedded devices such as sensors, home appliances, weather stations and even toys to Internet Protocol (IP) based networks. The number of IP-enabled embedded devices is increasing rapidly, and although hard to estimate, will surely outnumber the number of personal computers (PCs) and servers in the future. With the advances made over the past decade in microcontroller,low-power radio, battery and microelectronic technology, the trend in the industry is for smart embedded devices (called smart objects) to become IP-enabled, and an integral part of the latest services on the Internet. These services are no longer cyber, just including data created by humans, but are to become very connected to the physical world around us by including sensor data, the monitoring and control of machines, and other kinds of physical context. We call this latest frontier of the Internet, consisting of wireless low-power embedded devices, the Wireless Embedded Internet. Applications that this new frontier of the Internet enable are critical to the sustainability, efficiency and safety of society and include home and building automation, healthcare, energy efficiency, smart grids and environmental monitoring to name just a few.
標簽： Embedded Internet Wireless 6LoWPAN The
上傳時間： 2020-05-26
上傳用戶：shancjb
Mobile communication devices like smart phones or tablet PCs enable us to consume information at every location and at every time. The rapid development of new applications and new services and the demand to access data in real time create an increasing throughput demand. The data have to be transmitted reliably to ensure the desired quality of service. Furthermore, an improved utilization of the bandwidth is desired to reduce the cost of transmission.
標簽： Architectures Processing Baseband Signal for
上傳時間： 2020-05-26
上傳用戶：shancjb
Over the past ten years there has been a revolution in the devel- opment and acceptance of mobile products. In that period, cel- lular telephony and consumer electronics have moved from the realm of science fiction to everyday reality. Much of that revolu- tion is unremarkable – we use wireless, in its broadest sense, for TV remote controls, car keyfobs, travel tickets and credit card transactions every day. At the same time, we have increased the number of mobile devices that we carry around with us. However, in many cases the design and function of these and other static products are still constrained by the wired connections that they use to transfer and share data.
標簽： Short-Range Essentials Wireless of
上傳時間： 2020-05-27
上傳用戶：shancjb
In the nineteenth century, scientists, mathematician, engineers and innovators started investigating electromagnetism. The theory that underpins wireless communications was formed by Maxwell. Early demonstrations took place by Hertz, Tesla and others. Marconi demonstrated the first wireless transmission. Since then, the range of applications has expanded at an immense rate, together with the underpinning technology. The rate of development has been incredible and today the level of technical and commercial maturity is very high. This success would not have been possible without understanding radio- wave propagation. This knowledge enables us to design successful systems and networks, together with waveforms, antennal and transceiver architectures. The radio channel is the cornerstone to the operation of any wireless system.
標簽： LTE-Advanced Generation Next and
上傳時間： 2020-05-27
上傳用戶：shancjb
In recent years, the research and developments in the area of RF and microwave technologies have progressed significantly due to the growing demand for applica- bility in wireless communication technologies. Starting from 1992, wireless com- munication technologies have become quite mature. In the modern era of electronic developments, design of wireless handsets is an example of integration of many di- verse skill sets. Classical books in the areas of microwave technology provide us with an in-depth knowledge of electromagnetic fundamentals.
標簽： Front-Ends Receiver Modern
上傳時間： 2020-05-31
上傳用戶：shancjb
An understanding of the policies, regulations, standards and techniques of radio spectrum management is useful to those who manage and administrate it, to operators, to equipment providers and to the users of wireless communication (i.e., all of us). For many years the author has been deeply involved in ruling the RF spectrum at the national, regional and global levels. The book is based on the professional experience of the author, his academic courses, presenta- tions and tutorials in five continents. The book reflects this legacy and will be of use to engineers, lawyers and economists, who serve the global industry of the wireless world; in it they may find solutions to the problems they frequently encounter.
標簽： Management Spectrum Radio
上傳時間： 2020-06-01
上傳用戶：shancjb
Each of us is interested in optimization, and telecommunications. Via several meetings, conferences, chats, and other opportunities, we have discovered these joint interests and decided to put together this book.
標簽： Telecommunications optimization heuristics
上傳時間： 2020-06-01
上傳用戶：shancjb
