Báo cáo hóa học: " QoS Topology Control for Nonhomogenous Ad Hoc Wireless Networks" ppt

... the energ y-efficient QoS topology con- trol problem for nonhomogenous ad hoc networks. This is the first time in the literature that topology control is stud- ied regarding QoS provisions. Both ... “Algorithmic aspects of topology control problems for ad hoc networks,” in Proceedings of the 3rd ACM Interna- tional Symposium on Mobile Ad Hoc Networking and Comput-...

Ngày tải lên: 22/06/2014, 22:20

... per-location load information compensates unsuccessful transmissions due to wireless link errors by lowering per-location target load. 6.1.3 Performance in the presence of mobility As the next performance ... load value: if the number is less tha n the l oad, it marks a single bit of TaLE (for which we use one bit from the undefined sub- type of frame control field) in the MAC header; t...

Ngày tải lên: 21/06/2014, 00:20

... framework for wireless networks. The architecture is adequate to wireless networks because the underlying detection models rely on radio parameters and trafficmodels.Accurate correlation between radio ... of the wireless network. The MODWT, therefore, seems to be more convenient than the traditional DWT in this case because it preserves the time shift. 4. A Multilayer Detection Process...

Ngày tải lên: 21/06/2014, 22:20

... Power adaptation interval FM Fade margin to cope with fading effects 3.4. Power Adaptation Algorithm. Table 2 summarizes a notation used in the description of the proposed algorithm. The dynamic adaptation ... least 4 m (for bandwidth equal to 3 MHz) or 1 m (for bandwidth equal to 10 MHz), respectively. Although the SOS outperforms our schemes for FAPs position closer to the sidewalk, the...

Ngày tải lên: 21/06/2014, 05:20

... criti- cal issues in ad hoc networks. As a result, it remains unclear what level of video quality can be supported by an ad hoc network. Typically, for video communications over wireless ad hoc networks, ... respectively. Cross-Layer QoS Control for Video over Ad Hoc Networks 755 Table 2: Performance comparison (in PSNR, dB) of the proposed joint rate -control/ JSCC...

Ngày tải lên: 23/06/2014, 00:20

... The polymerase chain reaction (PCR) was carried out for 30 cycles (98°C for 15 sec, 58°C for 30 sec, and 72°C for 40 sec and finally 72°C for 5 min). The integrity of the cDNA was assayed by ... with a sense RNA probe as control to test the specificity of the ISH. The intensity of the hybridization signal was indi- cated as (+1) for weak, (+2) for moderate and (+3) for stron...

Ngày tải lên: 18/06/2014, 15:20

... “C": negative control for PCR. The sizes of the PCR products are 300 bp for human H19, 119 bp for IGF2-P4 and 213 bp for Histone 3.3 internal control, respectively. Amit and Hochberg Journal ... models for bladder cancer. Expression of IGF2-P4 and H19 transcripts in heterotopic subcutaneous tumors In order to develop a model for heterotopic bladder tumors, T24P or HT-1376...

Ngày tải lên: 18/06/2014, 16:20

... demands in different grasps (e.g., higher forces for palmar than for 2-digit grasp, higher forces for larger aperture sizes, etc.). The myoelectric control module simply thresholds the EMG inputs ... commands for reading t he forces and positions, as well as for setting the finger posi- tions in the range from 0 (fully open) to 100% (fully flexed) and tendon forces in the range fr...

Ngày tải lên: 19/06/2014, 08:20

... designed for trans- radial prostheses. The 9 classes were: wrist flexion, wrist extension, forearm supination, forearm pronation, thumb close, 4-finger close, making a fist, fingers spread open, ... remains a challenge for the ongoing studies along with propor- tional and simultaneous control. Conclusions The dynamic portions of EMG signals are important for real myocontrol systems an...

Ngày tải lên: 19/06/2014, 08:20

... enable differential force control. Differential Force Control We used a ‘gated ramp controller, for two-channel dif- ferential position and force control (e.g. see [24]). Sub- jects controlled the ... experiment showed that when feedforward predictability was degraded, performance degraded too. However, with the addition of either visual or tactile feedback, performance was restored,...

Ngày tải lên: 19/06/2014, 08:20