Fixed-mobile.convergence.and.voice-data.networks.have.merged.next-gen- eration,.value-added.applications.and.integrated.multimedia.services,.com- bining. Web. browsing,. instant. messaging,. presence,. voice. over. IP,. video. conferencing,. application. sharing,. telephony,. unified. messaging,. multi- media.content.delivery,.etc..on.top.of.different.network.technologies..The. convergence.of.the.communications.networks.is.motivated.by.the.need.to. support.many.forms.of.digital.traffic.as.well.as.to.amortize.implementation. and.operational.costs.of.the.underlying.networks..Historically,.the.approach. to. build. and. deploy. multimedia. services. has. focused. upon. single-point. solutions..
标签： Multimedia Subsystem Handbook IMS IP
上传时间： 2020-05-27
上传用户：shancjb
Commoditization is a serious threat to the telecommunications industry. Most CSPs offer similar services at rates designed to win what has become a price war. As a result, many face decreasing margins and difficulty sustaining differentiation based on prices or products alone. On top of commoditization, CSPs also face competition from OTT providers and an increasingly knowledgeable and demanding customer base. With access to growing amounts of data from an ever-increasing number of sources and devices, today’s empowered, savvy consumers know what they want and expect to get it.
标签： RestoringConnections_IBM_CPL
上传时间： 2020-06-01
上传用户：shancjb
Software Radio (SR) is one of the most important emerging technologies for the future of wireless communication services. By moving radio functionality into software, it promises to give flexible radio systems that are multi-service, multi- standard, multi-band, reconfigurable and reprogrammable by software. Today’s radios are matched to a particular class of signals that are well defined bytheircarrierfrequencies,modulationformatsandbandwidths.Aradiotransmitter today can only up convert signals with well-defined bandwidths over defined center frequencies, while, on the other side of the communication chain, a radio receiver can only down convert well-defined signal bandwidths, transmitted over specified carrier frequencies.
上传时间： 2020-06-01
上传用户：shancjb
索尼(中国)有限公司（简称“索尼中国”）基于以下条款和条件(简称“本条款”),在其网站按索尼中国酌定的范围,向中国公众提供免费在线下载某些索尼产品的产品使用说明书(简称“该产品使用说明书”)和某些索尼产品的相关软件(简称“该相关软件”)的服务(简称“该服务”)。 在您开始使用该服务前，请仔细阅读本条款，包括其中的免责和限制责任的条款，然后选择“同意”或“不同意”。如果您同意接受本条款的制约，请选择“同意”，即可使用该服务。如果您不同意接受本条款的制约，请选择“不同意”，并不要使用该服务。在任何情况下,如果您实际上使用了该服务，您将被视作已同意接受本条款的制约。
上传时间： 2020-06-01
上传用户：dsfkhsdifh
Visible light communications (VLC) is the name given to an optical wireless communication system that carries information by modulating light in the visible spectrum (400–700 nm) that is principally used for illumination [1–3]. The communications signal is encoded on top of the illumination light. Interest in VLC has grown rapidly with the growth of high power light emitting diodes (LEDs) in the visible spectrum. The motivation to use the illumination light for communication is to save energy by exploiting the illumination to carry information and, at the same time, to use technology that is “green” in comparison to radio frequency (RF) technology, while using the existing infrastructure of the lighting system.
标签： Communication Visible Light
上传时间： 2020-06-01
上传用户：shancjb
VK0384是一个48x8的LCD駆动器. 可软件程控使其适用于多样化的LCD应用线路. 仅用到3至4条讯号线便可控制LCD駆动器,除此之外亦可介由指令使其进入省电模式 特色 工作电压 : 2.4V~5.2V 内建 256KHz RC oscillator 提供 1/4 偏压 1/8 COM 周期 省电模式 48x8 LCD駆动器 内建 48x8 bit 显示内存 3-wire serial interface 软件程控 资料及指令模式 自动增加读写地址
上传时间： 2020-06-05
上传用户：shubashushi66
As a student I did my best to avoid text books – a strange statement for a Professor to make and one that I should clarify before you put this book down; I did my best to avoid text books that did not help me.
标签： Microdevices Ceramic Thick Films MEMS for and
上传时间： 2020-06-06
上传用户：shancjb
stract With global drivers such as better energy consumption, energy efficiency and reduction of greenhouse gases, CO 2 emission reduction has become key in every layer of the value chain. Power Electronics has definitely a role to play in these thrilling challenges. From converters down to compound semiconductors, innovation is leading to breakthrough technologies. Wide BandGap, Power Module Packaging, growth of Electric Vehicle market will game change the overall power electronic industry and supply chain. In this presentation we will review power electronics trends, from technologies to markets.
标签： Electronics Materials Power WBG for
上传时间： 2020-06-07
上传用户：shancjb
写一个HIS系统界面，要求的功能（从患者角度操作）： 注册/登录功能 挂号（选择科室，医生） 查看病历 查看药方 要求用到的技术： css用来对页面进行格式设置 jquery的事件操作 ajax读取json数据（仅用GET方法）
标签： JavaScript
上传时间： 2020-06-08
上传用户：15162964158
Radio frequency identifi cation (RFID) technology is a wireless communication technology that enables users to uniquely identify tagged objects or people. RFID is rapidly becoming a cost-effective technology. This is in large part due to the efforts of Wal-Mart and the Department of Defense (DoD) to incorporate RFID technology into their supply chains. In 2003, with the aim of enabling pallet-level tracking of inventory, Wal-Mart issued an RFID mandate requiring its top suppliers to begin tagging pallets and cases, with Electronic Product Code (EPC) labels. The DoD quickly followed suit and issued the same mandate to its top 100 suppliers. This drive to incorporate RFID technology into their supply chains is motivated by the increased ship- ping, receiving and stocking effi ciency and the decreased costs of labor, storage, and product loss that pallet-level visibility of inventory can offer.
标签： A_Guide_to_Radio_Frequency_IDenti fication RFID
上传时间： 2020-06-08
上传用户：shancjb
