Báo cáo hóa học: " Error Control Coding in Low-Power Wireless Sensor Networks: When Is ECC Energy-Efficient?" potx

... 10.1155/WCN/2006/74812 Error Control Coding in Low-Power Wireless Sensor Networks: When Is ECC Energy-Efficient? Sheryl L. Howard, Christian Schlegel, and Kris Iniewski Department of Electrical & Computer Engineering, ... required SNR ECC is less than SNR U by the cod- ing gain ECC gain . Also note that η C B C = R and η U B = R. The minimum required transmit po...

Ngày tải lên: 22/06/2014, 22:20

... The material in this article was presented in part at First International Conference on Communications and Networking in China (ChinaCOM’06), Beijing, China, October 25-27, 2006, the International Workshop ... Deterministic worst-case performance analysis for wireless sensor networks, in Proceedings of the International Wireless Communications and Mobile Computing Conference (IW...

Ngày tải lên: 21/06/2014, 00:20

... jam- ming. Thus, there is interest in developing methods to self- localize the sensor network with a minimum of additional hardware or communication. Self-localization in sensor networks is an ... otherwise, the indicator function is set to zero. Furthermore, let L denote the 2AS × 1 vector whose kth element is 1 if X k is measured and is 0 if X k is not measured; L is...

Ngày tải lên: 23/06/2014, 01:20

... Z-axis is normal to the metacarpal plane pointing palmarly, Y-axis has the direction of vector (M2 - SR) pointing distally, while X-axis is calculated as the cross-product of Y and Z-axis, pointing ... reduced in all joints, thus indicating anomalies not only in hand opening but also in hand closing. However, peak speed reached dur- ing hand closing was significantly higher than tha...

Ngày tải lên: 19/06/2014, 08:20

... them—this is to be expected, since the analysis is exact. For nonuniform clustering, the derivation of the probability of decision error is similar to that outlined in this section. However, since ... higher the noise intensity in the communication links is, the higher the CDF of the network lifetime is. In fac t, in this case the trans- fer of information from the sensors t...

Ngày tải lên: 22/06/2014, 19:20

... cycle sensor networks, for which estab- lishing a common key for each pair of neig h boring sensors is unnecessary since most sensors remain in sleep mode at any instant of time. SeGrid intends ... com- promised. This requires that any λ +1columnsofG must be linearly independent. An interesting method of computing G is proposed by Du et al. in [7]. This idea is sketched as the fol...

Ngày tải lên: 22/06/2014, 22:20

... complex UCHL1 is involved in the control of the intracellular proteolysis, protein turnover and regulatory processes, which are important in main- taining normal cellular homeostasis [7]. UCHL1 ... a fundamental role in the mech- anisms controlling the protein turnover of the kidney. There exists conflicting evidence concerning the role of UCHL1 in tumorigenesis varying from anti-...

Ngày tải lên: 18/06/2014, 15:20

... tasks. In th e evaluation of patients complaining of balance dis- orders, postural instrumental analysis plays nowadays an increasingly important role. Instrumental analysis can indeed add to clinical ... postural control in PWS individuals using not only posture analysis in time domain but also applying the frequency domain analysis and the FD method. With this approach we aimed to i...

Ngày tải lên: 19/06/2014, 08:20

... prior to this recoding, suggesting that miscategorization as MA- positive is not responsible for the poor level of agreement between the two tests. All statistical analyses were again run according ... Access Research Case -Control study of Firefighters with documented positive tuberculin skin test results using Quantiferon-TB testing in comparison with Firefighters with negative tuber...

Ngày tải lên: 20/06/2014, 00:20

... services coming of age in sub-Saharan Africa? Clin Infect Dis 2006, 42:383-384. 19. WHO: HIV Drug Resistance Training. Module 11: Quality Control and Quality Assurance [http://www.who.int/entity/hiv/pub/drugresistance/ HIVDR_Mod_11_QAQC.ppt]. 20. ... were in a second invalid run and required further repeat testing. Sending samples internationally for ongoing quality control was not fe...

Ngày tải lên: 20/06/2014, 08:20