using a wireless network

... on Wireless 18 Apply Wireless Technologies to Horizontal Applications Along with the many vertical markets and applications, you can apply wireless technologies to horizontal applications, meaning ... site and get accurate information regarding the status of a package. Using Wireless for Public Safety Public safety applications got their start with radio communications for maritime endeavors and other ... Service as a Network Systems Engineer bringing his knowledge of the desktop platform and a general understanding of a broad range of technologies in areas such as remote access, ATM, frame relay, and...

Ngày tải lên: 16/10/2013, 13:15

Ngày tải lên: 21/06/2014, 11:20

Ngày tải lên: 21/06/2014, 23:20

Ngày tải lên: 22/06/2014, 23:20

... results are used. 43 learning data are used for training the ANN model, and the others are used for the comparison Data Collection Data Normalization Parametric Studies Training and Testing ANN ... the field data. In particular, these differences are increase at the high strain rate range. The reason is that ANN model has not a lot of database on the high strain rate. To eliminate this ... fields. In this study, a back-propagation neural network model for estimating of proper strain rate form soil parameter is proposed. The back-propagation neural network program adopted in the present...

Ngày tải lên: 22/03/2013, 15:01

... entire network down to far less than 20 Mbps of aggregate bandwidth. Even if you have a network where all stations do transfer data at a 54 Mbps data rate, calculating VoIP capaci- ty based on ... of Interframe Spaces (quiet periods) and Acknowledgments accompany that data. In addition, Wi-Fi networks have a random backoff sequence that allows a wireless AP and the stations that connect ... that access points and stations are WMM-certified. For a station to enter the voice access category, the application must support WMM. As an example, making a call with a standard SIP-based handset...

Ngày tải lên: 24/01/2014, 09:20

... Initiator: The java DriverManager allows for a method to open a database, providing it the name of the database, user name and password as parameters. So, this component just has to make a call to this ... Data Displayer: This extracts data as required by the user and displays them in a table as well as evaluates the AQI for the selected area. • Trend Analyser: Gets previous readings and determines ... required values. • Aggregator: implements the RCQ algorithm for data aggregation that we will discuss in the next section. • Data Extractor: Use SQL queries to extract data from database • Data Displayer:...

Ngày tải lên: 17/02/2014, 22:20

... face the task. There are two reasons why the approach doesn't do as well as an automatic approach ought to. First, as mentioned above, our method of evaluation is not ideal; it may make ... semantic and stylistic differentiation of synonyms and near-synonyms. In AAAI Spring Symposium on Building Lexicons for Machine Translation, pages 114 121, Stanford, CA, March. Elhadad, ... We replaced each occurrence by a 'gap' that the program then had to fill. We compared the 'correct- ness' of the choices made by our program to the baseline of always choosing...

Ngày tải lên: 22/02/2014, 03:20

... is labeled for each particular verb as so-called frames. Addition- ally, semantic roles can also be labeled with one of 13 ARGM adjunct labels, such as ARGM-LOC or ARGM-TMP for additional locational ... solves a multi-class prob- lem using a one-vs-the-rest approach. The final sys- tem, called ASSERT, gives state-of-the-art perfor- mance and is also freely available at: http:// oak.colorado.edu/assert/. ... compli- cated, consist of several stages and hand- built features, and are too slow to be applied as part of real applications that require such semantic labels, partly because of their use of a syntactic...

Ngày tải lên: 17/03/2014, 04:20

... determine how many cars R can be on the road in the US with a guarantee that there is a less than P chance of any two or more cars having the same ID-set, is a classical birthday problem calculation: R ... to get a match rate of more than P = 1%. We note that this calculation is based on the unrealis- tic assumption that all 38 billion cars are co-located, and are using the same modulation and coding ... drain at- tacks. Although activation signals are very simple, they can convey a minimal amount of bits. Thus, using a long packet format with encryption and authentication is un- suitable, and...

Ngày tải lên: 23/03/2014, 10:20

... task. Finally, we compare our approach to a state- of-the-art tagger, based on Brill's transforma- tion based approach; we show that SNOW- based taggers already achieve results that are ... learning algorithm. A tar- get node in the network corresponds to a can- didate in the disambiguation task; all subnet- works learn autonomously from the same data in an online fashion, and ... are related to further studying this approach, based on multiplicative update algorithms, and using it for other natural language problems. More fundamental, we believe, are those that are...

Ngày tải lên: 23/03/2014, 19:20

... emphasize that the proposed approach requires seamless integration of large amounts of data into a research database in order to be able to perform meaningful statistical analyses. ActiS – Activity ... system with ActiS sensors would also allow one to assess metabolic rate and cumu- lative energy expenditure as a valuable parameter in the management of many medical conditions. An early ver- sion ... patient's activity and level of comfort and thus negatively influence the measured results. A wearable health-monitoring device using a Personal Area Network (PAN) or Body Area Net- work (BAN)...

Ngày tải lên: 19/06/2014, 10:20

... information is a vital requirement for the network to be able to perform in practical applications. Due to drawbacks of using GPS in practical networks, mainly cost and lack of access to satellite ... Z Tian, GB Giannakis, H Kobayashi, AF Molisch, HV Poor, Z Sahinoglu, Sahinoglu, Localization via ultra-wideband radios: a look at positioning aspects for future sensor networks. IEEE Signal Process ... Formally, POCS for a tar- get i can be implemented as Algorithm 2, where  λ i k  k≥0 are relaxation parameters, which are confined Gholami et al. EURASIP Journal on Wireless Communications and...

Ngày tải lên: 20/06/2014, 22:20

... commonly appearing variables in the paper to facilitate the reader. The vari- ables are listed in the order they appear in Table 2 below. Appendix 2: Finding a shortest path on a dag Shortest path ... that can be made at the medium access control. In the recent ye ars, there is ample evidence of how the variables associated with a particular layer depend on variables associated with other layers. ... for wireless networks. IEEE Commun Mag. 41(10) (2003) 14. V Srivastava, M Motani, Cross-layer design: a survey and the road ahead. IEEE Commun Mag. 43(12) (2005) 15. M van Der Schaar, NS Shankar,...

Ngày tải lên: 20/06/2014, 22:20

... retransmissions and thereby increase the perfor- mance of TCP over wireless networks. List of Abbreviations ACL: accuracy of congestion loss; ARL: accuracy of random loss; APR: accuracy of packet ... congestion avoidance algorithm. TCP DOOR detects out-of-order events only after a route has recovered from failures. As a result, TCP DOOR is less accurate and responsive than a feed-back based approach, ... the variation in throughput gain according to packet loss rate and propagation delays at six hops connection. The packet loss rate ranges from 1 to 5% with 1% packet reorderin g. For causing packet reordering...

Ngày tải lên: 21/06/2014, 02:20

... Communications and Networking B. The PDF of the Random Variable A/ f ∗ Let f ∗ be a random variable that is equal to the maximum among K i.i.d. exponential random variables with a parame- ter ... gain with an appropriate power allocation (PA) in order to support a defined Quality-of-Service (QoS) and jointly achieve lifetime maximization and confidentiality. We show that an adaptive PA ... the ana- lytical results are given in parentheses. The first important observation is that the target outage probability η has a significant impact on the network lifetime. As the outage probability...

Ngày tải lên: 21/06/2014, 05:20

... constant at 1 Mbps. In each simulation-iteration, we generate a scenario with a source-destination pair that is randomly and uniformly Table 1: Evaluation parameters. Parameter Value Transmission ... K. Jayasudha, and C. Chan- drasekar, “Improved packet forwarding approach in Vehicular ad hoc networks using RDGR algorithm,” IJNGN, vol. 2, no. 1, 2010. EURASIP Journal on Wireless Communications ... proposed protocol against large data packets and excessive overhead. The IEEE 802.11 MAC standard [15] and the TCP New- Reno are used at the MAC and TCP layers, respectively. The transmission rate is assumed...

Ngày tải lên: 21/06/2014, 11:20

Ngày tải lên: 21/06/2014, 11:20

Ngày tải lên: 21/06/2014, 17:20