Báo cáo hóa học: " On the Geometrical Characteristics of Three-Dimensional Wireless Ad Hoc Networks and Their Applications" pptx

... loca- tions and their corresponding degrees would affect the con- figuration of the wireless ad hoc network and even the total network throughput. Verdone [7] proved that in an infinite three-dimensional ... space. Then, on the basis of the distribution func- tion, some meaningful results on the wireless ad hoc network characteristics are presented, incl...

Ngày tải lên: 22/06/2014, 22:20

... not depend on n. On the other hand, clearly, E( d) = E  d i  = h 1 √ A, (59) where the number h 1 depends only on the shape of the region containing the network but not on the number of nodes ... (55) Using the identity n = √ ρAn in the above equation and re- calling the definition of F, we arrive at the statement of the theorem. 3. UPPER BOUND ON TH...

Ngày tải lên: 22/06/2014, 00:20

... weight ratio of 1:0.9 and various concentrations of 2.0 wt.% solution. The blend of P3HT and PCBM was stirred for 24 h at 40°C. The blend of the P3HT:PCBM solution was spin-casted on the pentacene- doped ... 21 Project. Authors’ contributions HK conceived the study, carried out the fabrication of photovoltaic cells, and drafted the manuscript. JL and SO estim...

Ngày tải lên: 20/06/2014, 23:20

... biology and neuron-glia-neuron sig- naling and interactions, and thus test specific parts of the hypothesis. Neuroactive substances produced by, or altered conditions related to, the production of ... Based on this literature and observations from our own laboratory and others on the role of astroglial cells in the fine-tuning of glutamate neurotransmission we pr...

Ngày tải lên: 19/06/2014, 22:20

... and their ratings of their child's QOL. Methods: One hundred and forty-nine healthy children (5.5 – 6.5, 6.5 – 7.5, and 7.5 – 8.5 years) completed the PedsQL™. One hundred and three of their ... ratings and their ratings of their child's QOL. These results are consistent with the findings of Eiser, Eiser, and Stride [22] and Goldbeck and Melches...

Ngày tải lên: 20/06/2014, 15:20

... that m k n < | a n | . 3. Proof of the theorem Proof of Theorem 1.1.Letm =min |z|=k |p(z)|. If p( z)hasazeroon|z|=k,thenm = 0 and the result follows from Lemma 2.8. Henceforth, we suppose that all the zeros of p(z) ... k. But this result contradicts the fact that |a 1 |>k. Hence, the polynomial D α 1 p(z) must be of degree (n - 1). On the other hand, since all t...

Ngày tải lên: 20/06/2014, 22:20

... cited. exponential equation as exponential function. A general solution of the exponential equation was introduced in [12]. In fact, a function f: ℝ ® ℂ is an exponential function if and only if either ... function and a n is a function satisfying (1). The continuation of proof depend on the dimension of H. In fact, if H is infinite dimensional, since (e n ⊗ F)(x)=  F( x ),...

Ngày tải lên: 20/06/2014, 22:20

... ≡ 0 because of the continuity of the function ˜ q n1 j on (0, R). In such a case, the elements of the second row of matrix ˜ Q n satisfy the equation l n ( ˜ q n2 j )= 0 . For the same reason as a ... s . (30) The terms  r R  n  | m | ≤n a (k) nm H m n ( ω ) of the series on the right-hand side of (29) are harmonic functions in ∑ R . Since these series con...

Ngày tải lên: 21/06/2014, 00:20

... ˜μ 5 1 r 4  dr . (11) Proof. See Appendix A. □ 4 Simulation results and discussion 4.1 The Gaussian approximation A common method for analyzing the EVM of an OFDM sig nal uses the central l imit theorem (CLT). ... computation does not rely on any underlyi ng model for the signal (such as the Gaussianity assump- tion), making it accurate for any mixture of tone con- stellati...

Ngày tải lên: 21/06/2014, 01:20

... A-3 and A-4 into Equation A-1, we arrive at the conclusion. Appendix 2: Proof of Theorem 3 Sufficient Condition Denote the RHS of the inequalities in Theorem 1 and Corollary 1 as R lo w i and R up p i respectively, ... Then the vector quantization scheme based on the distortion measure of the angle between the codevector and the downlink channel vector was adop...

Ngày tải lên: 21/06/2014, 02:20