a mục tiêu giúp hs ơn tập củng cố hoặc tự kiểm tra về
Bảng tra cứu thuật ngữ mạng máy tính
Ngày tải lên :
28/05/2015, 07:00
... truyền thông liệu DES – Data Ecryption Standard Tiêu chuẩn mã h a liệu data frame Khung liệu 127 Data Link Layer Tầng liên kết liệu data stream Luồng liệu DTE – data terminal equipment Thiết bị ... trang in, định ngh a hình dạng cuối trang in parity Thủ tục kiểm lỗi chẵn lẻ partition Phần chia đ a, phần hoạt động ơn vị độc lập vật lý PBX - Private Branch Exchance (PABX - Private Automated ... (LAN) Xerox phát triển năm 1976, dùng cấu hình bus F FDDI – Fiber Distributed Data Interface Giao diện phân phối liệu qua cáp quang, tốc độ truyền 100Mbps FTAM – File Transfer Access and Management...
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Dissertation summary for doctoral philosophy program in education: Methods to develop communication skills for children with autism 3 4 years old
Ngày tải lên :
02/07/2014, 20:28
... for CwA CwA ability and they work effectively for CwA? We mark those - Advantages and disadvantages teachers experience while organizing program/Plan in 10 criteria equivalence to 10 points activities ... teaching for CwA 76,7% * Disadvantages 68,3% peers Because of limitted vocabulary, CwA have difficult to initiate CwA is delayed in speaking, vocabulary is less than that of normal communication ... Chronological We measured developmental areas for Đ .A by Small Step as age was 47 months, intelligent age was 38 months (compared to chronological following: Chronological age was 42 months, intelligent...
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Applying learning strategies to improve TOEFL listening skill of Advanced Program students at Thai Nguyen University of Technology
Ngày tải lên :
19/03/2015, 10:33
... language learning They are learning strategies, communication strategies and social strategies a Learning strategies: Learning strategies are divided into two main types: Cognitive Learning Strategies ... 1 1 1 Total Conclusion score accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept accept Item ... Interpersonal Affective - Experiential Strategies Strategies strategies a Management and Planning Strategies: These strategies are actually connected with the learners’ purpose to control his own learning...
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Symbolic execution for advanced program reasoning
Ngày tải lên :
09/09/2015, 11:31
... program on an abstract domain that shares a Galois-connection with the concrete domain Once a fixed point is reached in the abstract domain, several concrete states can be combined to a single abstract ... specified target variables, similar to a slicing criterion These programs are ready to be analysed by a third-party application that seeks some information about the target variables, such as a verifier ... infeasible paths, and merging abstract states (via join operator) along incoming edges of a control flow merge A systematic way to avoid these inaccuracies is to perform path-sensitive analysis An...
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Introduction to Wireless Communications
Ngày tải lên :
13/09/2012, 10:52
... Can connect to a WLAN • Then collect data and transmit it to a central location 43 Wireless Advantages and Disadvantages • As with any new technology, wireless communications offers both advantages ... identify a stolen or counterfeit ticket – Can also give a real-time look at traffic flow – In-progress game statistics are available to any fan in the stadium with a wireless device 38 Travel • ... Generally only available in residential areas – Maximum transmission speed is only about Mbps 22 Fixed Broadband Wireless (continued) • Wireless metropolitan area network (WMAN) – Covers a distance...
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Beyond WSE 3.0 - Looking Ahead to Windows Communication Foundation (WCF)
Ngày tải lên :
05/10/2013, 08:48
... formalizes data constructs and message constructs as contracts and defines them as follows: Data contracts: These are analogous to XML schema files and they document the data types that a Web ... element="s0:Shares" />
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Tài liệu Car-to-Car Communication pptx
Ngày tải lên :
19/02/2014, 04:20
... integrating cars into business processes are considered valuable: First, data such as geographical position, covered distance or average speed may be transmitted to a company's backend system to allow ... services can include accident warning, information on traffic jams or warning of an approaching rescue vehicle In addition, information on road or weather conditions can be exchanged More elaborate ... into backend business processes So-called infrastructure-based services (e.g car-to-home data exchange, car-to-garage communications for remote diagnosis, Floating Car Data or Location Based Services)...
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Adaptive Traffic Lights Using Car-to-Car Communication pdf
Ngày tải lên :
16/03/2014, 12:20
... Transport Research Ltd, Vermont South, Australia William C Taylor and Ahmed S Abdel-Rahim, “Incident management under SCAT adaptive control system FAST-TRAC Phase III Deliverable #11,” Final Report ... power attenuation due to the propagation distance Our simulator has two signal propagation models: free-space and plane earth tworay path loss While the first is an idealized model, the two-ray path ... statistical facts The Highway Capacity Manual [2] is a complete guide that explains these well accepted models and gives directions on how to apply them in traffic analysis software tools and in real...
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a step by step guide to english communication skills - listen to me listen to you
Ngày tải lên :
27/03/2014, 13:39
... in Australia by BPA Print Group National Library of Australia Cataloguing-in-Publication data: Author: Kotzman, Mandy Title: isten to me, listen to you: a step-by-step guide to communication ... 11:32:50 AM First published 2008 by ACER Press, an imprint of Australian Council for Educational Research Ltd 19 Prospect Hill Road, Camberwell Victoria, 3124, Australia www.acerpress.com.au sales@acer.edu.au ... yourself and all participants Prepare group sets of materials from the Appendices as needed Have a supply of nametags and marker pens Arrange for a whiteboard or something similar, plus whiteboard...
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Advanced Trends in Wireless Communications Part 1 pptx
Ngày tải lên :
19/06/2014, 23:20
... Suvit Nakpeerayuth, Lunchakorn Wuttisittikulkij, Pisit Vanichchanunt, Warakorn Srichavengsup, Norrarat Wattanamongkhol, Robithoh Annur, Muhammad Saadi, Kamalas Wannakong and Siwaruk Siwamogsatham ... constant data rate can be maintained in the other states and henceforth a significant increase in capacity The outage capacity is defined as the maximum data rate that can be maintained in all nonoutage ... digital communications over fading channels (Karagiannidis et al., 2005; Sagias, Karagiannidis & Tombras, 2004; Sagias, Karagiannidis, Zogas, Mathiopoulos & Tombras, 2004; Sagias et al., 2003; Sagias...
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Advanced Trends in Wireless Communications Part 2 potx
Ngày tải lên :
19/06/2014, 23:20
... Channel Characterization and Performance Analysis of a 60 GHz near Gigabit System for WPAN Applications 25 2.2 Channel measurement and characterization The study of wave propagation appears as ... characterization: a ray-tracing tool and a D Gaussian Beam Tracking (GBT) technique The GBT method based on Gabor frame approach is particularly well suited to high frequencies and permits a ... idea was to analyze the results of BER measurements with and without RS coding in a hallway separated by a door Indoor Channel Characterization and Performance Analysis of a 60 GHz near Gigabit...
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Advanced Trends in Wireless Communications Part 3 pdf
Ngày tải lên :
19/06/2014, 23:20
... higher bandwidth and longer range An ad-hoc or mobile (e.g inter-aircraft) network that relies on high gain antennas also requires beam scanning Adaptive antenna arrays have found a wide rage of applications ... lowest data rate value of 169.4 kbps was obtained by the Half Wave Model antenna The results of the Quart Wave Model 2, Quart Wave Model and Half Wave Model antennas has followed a similar pattern ... are for Haifa Bay area, northern Israel and Ramla region, central Israel (four study cases are demonstrated here, two for each area) The observations of these four microwave links were made during...
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Advanced Trends in Wireless Communications Part 4 pdf
Ngày tải lên :
19/06/2014, 23:20
... spacing 4•ds A4 2 A4 3 A4 4 End-fire Antenna 4• d s A4 1 A3 1 A2 1 A1 1 A1 2 A3 2 A2 2 A1 3 A3 3 A2 3 A3 4 A2 4 A1 4 Antenna array element Layer Layer Layer Layer Fig Configuration of a 4x4 element square lattice ... large arrays for long range high data rate mm-wave communications In this hybrid antenna array, a large number of antenna elements are grouped into analogue sub-arrays Each sub-array uses an analogue ... the array is based on the antenna presented in Kaneda et al., 1998; Deal et al., 2000; Kaneda et al., 2002 As reported by Deal et al., 2000, a quasi-Yagi antenna is a compact and simple planar antenna...
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Advanced Trends in Wireless Communications Part 5 docx
Ngày tải lên :
19/06/2014, 23:20
... this diagonalizer can transfer the correlated and balanced diversity branches to the uncorrelated and unbalanced branches, but also can transfer the unbalanced and uncorrelated diversity branches ... correlated and balanced diversity branches to the uncorrelated and unbalanced branches, but also can transfer the unbalanced and uncorrelated diversity branches to the balanced and correlated branches ... branches A linear transformation can transform one situation to another 2.1 Diagonalization transformation The diagonalization technique has been used successfully in the error performance analysis for...
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Advanced Trends in Wireless Communications Part 6 ppt
Ngày tải lên :
19/06/2014, 23:20
... may change its state from current state to another or remain in the same state, these changes in the states are called transitions and the probabilities are called transition probabilities Markov ... Shannon capacity (data rate) equation is the basis for spread spectrum systems, which typically operate at a very low SNR, but use a very large bandwidth in order to provide an acceptable data rate ... , which means transmitting each bit separately, and this is practically not accepted because in this case, each bit will use g bits as a guard band, and this is a great loss in the bandwidth So,...
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Advanced Trends in Wireless Communications Part 7 potx
Ngày tải lên :
19/06/2014, 23:20
... a a2 a a l = 1tap a l = tap a a a0 τ 0 a a τ 233 τ a a1 τ 0 l = taps a2 a τ a τ 0 l = taps a Fig Pattern for the left and right shift zero, the received peak signal increases for an equal transmitted ... available whereas channel state information at the transmitter is in general more difficult to obtain Array gain means a power gain of signals that is achieved by using multiple-antennas at transmitter ... configurations remains almost the same The configurations which have multiple antennas at the transmitter (MISO and MIMO) have a better FG and IAP than the configurations having one antenna at the transmitter...
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Advanced Trends in Wireless Communications Part 8 ppt
Ngày tải lên :
19/06/2014, 23:20
... highways consists of a number of parallel lanes that have a certain lateral displacement Although a suitable representation of road lanes has been suggested, the data available today does not yet ... where a sudden change of direction can occur and a certain amount of past predictions may be invalidated To make applications aware of such differences, an additional output variable was added ... and they can have sufficient accuracy characteristics RF indoors localization methods are therefore means of attenuating AGV dead-reckoning navigation errors (Azenha & Carvalho, 2007b; Azenha...
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Advanced Trends in Wireless Communications Part 9 ppt
Ngày tải lên :
19/06/2014, 23:20
... inhomogeneous spatial capacity distribution in SIC networks, it is possible that some spatial areas have more capacity than the necessary and other zones not have capacity at all The quantitative comparison ... information data files and tolerate significant delays Fig 1 .a illustrates the SIC paradigm and compares it against the cellular model (Fig 1.b) In Fig both infocells coverage area and cells coverage ... reason that having another scheme of calculating RSSI with for example an arithmetic mean leads to an output that is not appropriate for dealing with practical RSSI measurement accuracy With another...
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