quantitative real time polymerase chain reaction 44
Design implementation of low power MAC protocol for wireless body area network
... applications can be categorized into real time monitoring and long term data logging In real time monitoring, CHAPTER Introduction sampled data needs to be sent to the hub in a timely and reliable way As ... 2.4 Conclusion A Real- Time Scalable Network Controller IC for Multi-Patient Wireless Vital Sign Monitoring 3.1 Real- Time Scalable Light-Weight TDMA MAC Protocol ... platform can operate for only 12 hours for continuous real time ECG monitoring at 500 Hz with Bluetooth In [26], a wireless multisensor system for real time monitoring of human physical activity is described...
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Báo cáo hóa học: " Research Article Combined Rate and Power Allocation with Link Scheduling in Wireless Data Packet Relay Networks with Fading Channels" pptx
... wastes part of the available transmission time, in reality this does not constitute a drawback First, by choosing kT, k = 0, 1, 2, , as the activating time, we may reduce the implementational ... using an infinite time horizon discounted performance measure in this paper (which is reasonable when the time scale of individual packets is much smaller than the overall service time of users), ... decreases from a positive number to zero before the time instant kT + ΔR−1 is reached For such a scenario we R stipulate that the transmission time is still reserved for the outgoing link and the...
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Báo cáo hóa học: " Accelerometer-based wireless body area network to estimate intensity of therapy in post-acute rehabilitation" pptx
... categories) For each activity, the observer classifies the time spent by the patient as active time or passive time Active time is defined as the time during which the patient is physically active, ... IFRU Time and motion results showed that the mean active time recorded per session was 27.0 ± 11.1 for a mean total time of 47.8 ± 12.2 Density of therapy, the ratio of active time on total time, ... time measure (min) 50 Figure Association between estimates of active time and measure of active time for observed sessions Association between estimates of active time and measure of active time...
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Báo cáo hóa học: " TCP-based window-size delegation method for TXOP Exchange in wireless local area networks" ppt
... extending TXOP Exchange so that it can be used for the downlink as well Unlike the uplink, we cannot realize TXOP Exchange for downlink only by MAC-layer modification at STAs since the packets are ... as before We also discuss the performance with varying the number of other STAs and round trip time (RTT) Finally, we mention the related work and conclude our paper in Sections and Previous ... other STAs Therefore, we consider modifying the transport protocol in this paper Since it is unrealistic to modify the transport protocol for every server, we assume that proxy servers are located...
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báo cáo hóa học:" A power efficient MAC protocol for wireless body area networks" pot
... inter-arrival time can be reset and reconfigured as the need arises A node like heart rate monitor can have very low inter-arrival time (e.g., 100 ms) for a particular amount of time such as exercise ... total sleep time ( ) (7) where 5.1.2 X-MAC It uses short strobe preamble On an average, it spends two preambles and one Ack packet, ( ) time on channel polling, where ( ) is the preamble time and ... overheads Figure 20 shows the lifetime comparison It can be seen that the lifetime for the proposed MAC has increased significantly The initial big difference in the lifetime for low events/day is due...
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báo cáo hóa học:" Brief Communication: Economic Comparison of Opportunistic Infection Management With Antiretroviral Treatment in People Living With HIV/AIDS Presenting at an NGO Clinic in Bangalore, India" doc
... and 12 members in other supportive capacities At the time of this study, the laboratory was equipped to handle HIV rapid spot tests, Venereal Disease Research Laboratory test (VDRL), hepatitis ... 22,393 (3.69%) 389,721 (64.21%) 99,230 (18.53%) 407 ,446 (76.09%) 506,677 (94.63%) Mean 14,693 896 15,588.8 3969 16,298 20,267 Median 10,495 100 13 ,448 1425 17,366 18,646 Page of (page number not ... in the medium-prevalence states) The program goal was to initiate HAART in 25,000 PLHA in that time period The national estimate for AIDS cases in India for August 2006 was 124,995.[9,10] Currently,...
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Báo cáo hóa học: " Research Article Outage Probability versus Fairness Trade-off in Opportunistic Relay Selection with Outdated CSI" doc
... is divided in two time- slots In the first time- slot, the source transmits the information to the relays, which attempt to demodulate and decode this information In the second time- slot, the relays ... belonging to the decoding subset start a timer The timer of each relay adopts as initial value a parameter inversely proportional to its instantaneous SNR Then, the timer that first expires is that belonging ... Clearly, channel reciprocity holds in TDD when the time coherence of the channel is higher than the time difference between uplink and downlink time slots In the opposite case, the methodology adopted...
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Báo cáo hóa học: " Minimum-length scheduling with rate control in wireless networks: a shortest path approach" docx
... discrete -time problem to a continuous -time equivalent, where slots are eliminated We then restrict the possible scheduling and rate control decisions to either communication “one at a time , in a Time ... individual access to the channel IV Time- varying networks In the previous section, we focused on time- invariant channels However, in reality, the wireless channel is time- varying, due to the effects ... given time, the solution of the above problem becomes trivial Specifically, each transmitter must be active for as many time slots as needed to empty its queue The required number of such time...
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Natural convection mass transfer hydromagnetic flow past an oscillating porous plate with heat source in a porous medium
... past a vertical plate under oscillatory suction velocity Ind J Pure Appl Math., 2003;.34(3), 429 -442 Hayat T., Mohyuddin M R., Asghar S., Siddiqui A M The flow of a visco-elastic fluid on an oscillating...
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Tài liệu An Evaluation of A Participatory Research Approach in Rainfed Lowland Area of Vinh Trach Village, B pptx
... stages in life cycle of crops are covered - The field is a classroom - Opportunity to practice in real situation - Study fields focusing on local issues - Participatory and experiential methodology ... small livestock production, application of VAC systems Number of farmers participated 24 Number of time % farmers adopted 100 24 40 50 15 35 1 30 27 39 Source: Site Working Group of Baclieu, 2002...
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Báo cáo hóa học: " A survey of performance enhancement of transmission control protocol (TCP) in wireless ad hoc networks" pptx
... retransmits it Moreover, TCP also uses timeout to detect losses After transmitting a segment, TCP starts a time down counter to monitor timeout occurrence If timeout occurs before receiving the ... re-establishment It is possible that timeout occurs for the buffered packets Therefore, it is necessary to increase transmission timeout values to avoid timeout events For ease of implementation, ... adds an extra interval to the backoff time, which is equal to the transmission time of the previous data packet Addition of this extra interval to the backoff time causes a slowdown in the data...
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Báo cáo hóa học: " Research Article Tree Based Protocol for Key Management in Wireless Sensor Networks" pptx
... construction protocol for wireless sensor networks,” in Proceedings of the IEEE Workshop on Large Scale RealTime and Embedded Systems (LARTES ’02), 2002 [10] B Dutertre, S Cheung, and J Levy, “Lightweight ... a variation of this protocol where the predeployed key is used only for a restricted period of time during which nodes establish pairwise keys Then, the predeployed key is erased However, Hello ... protects communications between a node and the base station or between two nodes, and μTESLA (microtime efficient streaming loss-tolerant authentication) that serves to authenticate packets coming...
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báo cáo hóa học:" Research Article An Energy-Efficient Target Tracking Framework in Wireless Sensor Networks" pot
... backoff timer before sending its TargetInfo message The collection of TargetInfo messages is fulfilled in a time window in each cycling time step Any TargetInfo message arriving after this time window ... incrementally in the space domain at each time step, but it is also updated sequentially in the time domain like ordinary sequential Bayesian methods when a new time step comes Furthermore, we use ... task of belief update for a certain time step is spatially distributed on a set of nodes; “sequential” means the belief is also updated in time domain when a new time step comes In our algorithm,...
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Báo cáo hóa học: " Research Article HUMS: An Autonomous Moving Strategy for Mobile Sinks in Data-Gathering Sensor Networks" pptx
... retransmitted the packet for up to three times if an acknowledgment was not received in time The main simulation parameters are listed in Table We compared the network lifetime performance of HUMS with ... 25th IEEE International Real- Time Systems Symposium (RTSS ’04), pp 296–305, Lisbon, Portugal, December 2004 [25] J Luo and J.-P Hubaux, “Joint mobility and routing for lifetime elongation in wireless ... 200 m Figure shows the network lifetimes of the four strategies varied with different initial energy of Yanzhong Bi et al ×103 ×103 120 90 85 Average network lifetime (s) 100 90 80 70 60 80 75 70...
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Báo cáo hóa học: " Optimizing Transmission and Shutdown for Energy-Efficient Real-time Packet Scheduling in Clustered Ad Hoc Networks" potx
... timeslot) Indeed, for each timeshare of the channel allocated to a user, we are interested in the configuration point that achieves the lowest possible energy within this Energy-Efficient Real- time ... constraint timeshare Consider configuration A on Figure This configuration should never been allocated, as for each timeshare it fits in, there exists another configuration that also fits the timeshare ... research staff at IMEC Since 2000, she has been a part -time Professor at the Ghent University Since 2001, she has switched Energy-Efficient Real- time Packet Scheduling her research domain to broadband...
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Lightpath routing with survivability requirements in WDM optical mesh networks
... lightpath demands (SLDs) the set-up time and tear-down time are known a priori It may so happen that in a given set of SLDs, some of the demands are not simultaneous in time, and hence the same network ... demands are not simultaneous in time, and hence the same network resource could be used to satisfy several demands at different times If routing algorithms capture this timedisjointedness among connections, ... calls with known holding times has been presented in [56] The benefit of algorithms that exploit knowledge of known holding times is discussed Two schemes, namely, F-scheme and time- slots scheme were...
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Dynamic association in wireless mesh networks
... traffic situation practically In order to indicate the real traffic load and reflect it in real- time, our association mechanism measures the real traffic load through channel based load detection ... WMNs STAs combine the association airtime cost of access links with the routing airtime cost of the backbone, and choose the MAP with the minimum total airtime cost to associate with The authors ... and historical values, thus smoothening then measurement procedure This real- time measurements and updates reflect the real traffic load throughout wireless networks, although it may incur additional...
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Interference minimized multipath routing with congestion control in wireless sensor network for multimedia streaming
... images or low-resolution videos of the targets This information needs to be transmitted in a near real- time manner to the remote command center via the UAV network As the sensor nodes capturing the ... of wireless interferences However in reality this may not always be the case and the physical model of interference models wireless interferences closer to real- life radios, where the overall ... execution time of detailed models forms a barrier for the effective use of simulations The Global Mobile System Simulator (GloMoSim) [10] uses parallel discrete event simulation to reduce execution time...
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Game Theory in Wireless and Communication Networks: Theory, Models, and Applications
... networks 418 13.1 421 421 423 426 426 426 428 429 431 432 432 433 434 435 436 436 438 439 440 441 441 442 443 445 13.2 13.3 13.4 13.5 Cooperative spectrum sensing 13.1.1 System model 13.1.2 Coalitional-game ... spectrum allocation 13.8.1 User demand 13.8.2 Optimal price 13.8.3 Related work Summary xiii 446 446 447 448 449 450 451 454 455 455 457 458 458 Internet networks 460 14.1 462 463 465 471 473 474 476 ... multimedia network: With the need to support multimedia applications, wireless networks have to be designed to provide QoS guarantee and reliable multimedia communication In this case, the multimedia...
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wireless personal area networks - performance, interconnection, & security with ieee 802.15.4
... sub -chain for the CSMA-CA access mechanism Delay lines for the Markov sub -chain block in Figure 10.6 Markov chain for the SS bridge under non-acknowledged transfer Markov chain ... network • The protocol should provide quality of service (QoS) support for real- time traffic wherever possible Real- time, in this context, implies data traffic with prescribed performance bounds; ... Average lifetime in days when each cluster has 100 nodes Ratio of standard deviation and mean of cluster lifetime Cluster performance with equalized cluster lifetimes ...
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