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Convergence between the two largest networks (Telecom and IP) is taking place
very rapidly and at diff erent levels: (1) network level: unifi cation of IP networks
with traditional Telecom networks through evolving standards (Session Initiation
Protocol (SIP), Realtime Transfer Protocol (RTP), SS7, 3G) to support interopera-
bility; (2) service level: traditional Telecom services like voice calls are being provi-
sioned on the IP backbone (VoIP), while traditional IP services (most data-driven
services such as multimedia, browsing, chatting, gaming, etc.) are accessible over
the Telecom network.
標(biāo)簽：
Platforms
Delivery
Service
上傳時(shí)間：
2020-06-01
上傳用戶(hù)：shancjb
-
driven by the desire to boost the quality of service of wireless systems closer to that afforded
by wireline systems, space-time processing for multiple-input multiple-output (MIMO)
wireless communications research has drawn remarkable interest in recent years. Excit-
ing theoretical advances, complemented by rapid transition of research results to industry
products and services, have created a vibrant and growing area that is already established
by all counts. This offers a good opportunity to reflect on key developments in the area
during the past decade and also outline emerging trends.
標(biāo)簽：
Space-Time
Processing
上傳時(shí)間：
2020-06-01
上傳用戶(hù)：shancjb
-
This book is focused on designing and developing Representational State Transfer (REST)
platforms in Rails. REST is the architectural style of the Web, consisting of a set of
constraints that, applied to components, connectors, and data elements, constitute the
wider distributed hypermedia system that we know today: the World Wide Web.
There are a few good reasons why it makes more sense to build platforms instead of just
products or applications. Platforms are like ecosystems interconnecting different
applications, services, users, developers, and partners. Platforms foster innovation through
the inputs of their direct collaborators. By providing application programming interfaces
(APIs) and software development kits (SDKs), platforms are more customer driven.
標(biāo)簽：
Development
Building
RESTful
Rails
上傳時(shí)間：
2020-06-06
上傳用戶(hù)：shancjb
-
In this research, we have designed, developed implemented a wireless sensor
networks based smart home for safe, sound and secured living environment for
any inhabitant especially elderly living alone. We have explored a methodology
for the development of efficient electronic real time data processing system to
recognize the behaviour of an elderly person. The ability to determine the
wellness of an elderly person living alone in their own home using a robust,
flexible and data driven artificially intelligent system has been investigated. A
framework integrating temporal and spatial contextual information for
determining the wellness of an elderly person has been modelled. A novel
behaviour detection process based on the observed sensor data in performing
essential daily activities has been designed and developed.
標(biāo)簽：
Smart
Homes
上傳時(shí)間：
2020-06-06
上傳用戶(hù)：shancjb
-
A revolution in power industries, including generation, transmission and distribution, driven by
environmental and economic considerations, is taking place all over the world. The smart grid allows for
integration of diverse generation and storage options, reduced losses, improved efficiencies, increased
grid flexibility, reduced power outages, allowing for competitive electricity pricing and integration of
electric vehicles and overall becoming more responsive to market, consumer and societal needs. It is
bringing profound changes to both power systems and many related industries.
標(biāo)簽：
Measurement
Innovative
Solutions
Testing
and
上傳時(shí)間：
2020-06-07
上傳用戶(hù)：shancjb
-
driven by the rapid advancement of technology and the growing need of business
requirements, cyber communications are embedded in many physical systems. The
integration of cyber and physical capabilities leads to the creation of many applica-
tions with enormous societal impact and economic benefit. The emerging systems
that connect the cyber-world of computing and communications with the physical
world are cyber-physical systems (CPS).
標(biāo)簽：
Resiliency
Analytics
Security
and
上傳時(shí)間：
2020-06-07
上傳用戶(hù)：shancjb
-
A kinematically redundant manipulator is a serial robotic arm that has more
independently driven joints than are necessary to define the desired pose (position
and orientation) of its end-effector. With this definition, any planar manipulator (a
manipulator whose end-effector motion is restrained in a plane) with more than
three joints is a redundant manipulator. Also, a manipulator whose end-effector can
accept aspatialposeisaredundant manipulator ifithas morethan sixindependently
driven joints. For example, the manipulator shown in Fig. 1.1 has two 7-DOF arms
mounted on a torso with three degrees of freedom (DOFs). This provides 10 DOFs
for each arm. Since the end-effector of each arm can have a spatial motion with six
DOFs, the arms are redundant.
標(biāo)簽：
Autonomous
Modeling
Planning
Robots
Path
上傳時(shí)間：
2020-06-10
上傳用戶(hù)：shancjb
-
Design for manufacturability and statistical design encompass a number
of activities and areas of study spanning the integrated circuit design and
manufacturing worlds. In the early days of the planar integrated circuit, it was
typical for a handful of practitioners working on a particular design to have
a fairly complete understanding of the manufacturing process, the resulting
semiconductor active and passive devices, as well as the resulting circuit -
often composed of as few as tens of devices. With the success of semiconductor
scaling, predicted and - to a certain extent even driven - by Moore’s law, and
the vastly increased complexity of modern nano-meter scale processes and the
billion-device circuits they allow, there came a necessary separation between
the various disciplines.
標(biāo)簽：
Manufacturability
Statistical
Design
for
and
上傳時(shí)間：
2020-06-10
上傳用戶(hù)：shancjb
-
結(jié)構(gòu)體的具體尺寸如下所示：a=1.20h=0.620其中介質(zhì)錐的介電常數(shù)E=2.0。選定工作頻率為f=15GHz相對(duì)應(yīng)的真空中的波長(zhǎng)為0=20mm，這樣結(jié)構(gòu)體的兒何尺寸己經(jīng)完全確定，下面介紹求解的全過(guò)程選定求解方式為（Solution Type）driven modal1.建立所求結(jié)構(gòu)體的幾何模型（單位：mm）。由于此結(jié)構(gòu)體的幾何形狀較簡(jiǎn)單，使用工具欄中的Draw命令可直接畫(huà)出，這里不再贅述述。畫(huà)出的結(jié)構(gòu)體如圖4.1.2所示。2.充結(jié)構(gòu)體的材料選定結(jié)構(gòu)體中的錐體部分，添加其介電常數(shù)Er=20的介質(zhì)材料注：如果HSS中沒(méi)有提供與所需參數(shù)完全相同的材料，用戶(hù)可以通過(guò)新建材料或修改已有材料，使其參數(shù)滿(mǎn)足用戶(hù)需求設(shè)定結(jié)構(gòu)體的邊界條件及其激勵(lì)源a.選定結(jié)構(gòu)體的貼片部分，設(shè)定其為理想導(dǎo)體（PerE）。b.畫(huà)出尺寸為X×Y×Z=70mm×70mm×40mm的長(zhǎng)方體作為輻射邊界，并設(shè)定其邊界條件為輻射邊界條件（Radiation Boundary）。c.由于要求出結(jié)構(gòu)體的RCS，因此設(shè)定激勵(lì)源為平面入射波（Incident Wave Source）。如圖4.1.3所示。4.設(shè)定求解細(xì)節(jié)，檢驗(yàn)并求解a.設(shè)定求解過(guò)程的工作頻率為f=15GHz.其余細(xì)節(jié)設(shè)定如圖4.1.4所示。b.設(shè)定遠(yuǎn)區(qū)輻射場(chǎng)的求解（Far Field Radiation Sphere欄的設(shè)定）。c.使用 Validation check命令進(jìn)行檢驗(yàn)，無(wú)錯(cuò)誤發(fā)生，下一步運(yùn)行命令 Analyze，對(duì)柱錐結(jié)構(gòu)體進(jìn)行求解。如圖4.1.5和4.1.6所示。
標(biāo)簽：
ansoft
天線(xiàn)
hfss
上傳時(shí)間：
2022-03-10
上傳用戶(hù)：
-
以STC12C5A60S2單片機(jī)為控制核心,采用2.4G(JF24D)無(wú)線(xiàn)遙控模塊進(jìn)行無(wú)線(xiàn)發(fā)射與接收,設(shè)計(jì)了一種雙電機(jī)遙控船?？刂葡到y(tǒng).該系統(tǒng)通過(guò)切換檔桿實(shí)現(xiàn)前進(jìn)后退,方向盤(pán)左右轉(zhuǎn)動(dòng)、暫停按鈕等控制直流電機(jī)的正轉(zhuǎn)、反轉(zhuǎn)、暫停,使得電機(jī)驅(qū)動(dòng)的遙控船模實(shí)現(xiàn)前進(jìn)后退、左右轉(zhuǎn)向、暫停等功能,有效解決了驅(qū)動(dòng)功率小和船模之間相互干擾等問(wèn)題,可廣泛應(yīng)用于遙控船模領(lǐng)域.Using STC12C5A60S2 single-chip microcomputer as the controller and 2.4 G(JF24D)wireless remote control module for wireless transmission and reception, a dual-motor remote control ship model control system is designed. The system realizes forward and backward by switching the gear lever. The steering wheel rotates left and right and the pause button controls the forward, reverse and pause of the dc motor. The remote controller of ship model driven by the motor realizes forward and backward, left and right steering, pause and other functions. The ship model control system can effectively solve the problems of small driving power and mutual interference between ship models, and can be widely used in the field of remote controller of ship model.
標(biāo)簽：
電機(jī)
遙控船模
控制系統(tǒng)
上傳時(shí)間：
2022-03-27
上傳用戶(hù)：
