in this paper, collapse behavior of simple and reinforced thin-walled channel- section beams, subjected to three- point bending, is investigated. many simple channel- section beams of different geometry and some reinforced ones were tested, and their strengths after collapse were obtained thoroughly. since the available theories in this area are complicated and little attention has been paid to...

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Discrete Memoryless Channels . . . . . . . . . . . . . . . . . . . . . . . . 2 The Binary Symmetric Channel . . . . . . . . . . . . . . . . . . . . . . . 4 Secrecy Capacity of a Channel . . . . . . . . . . . . . . . . . . . . . . . . 9 Secret Key Agreement Rate by Public Discussion . . . . . . . . . . . . . 17 On...

We consider the use of novel communication tool sets to improve the performance of robust watermarking systems. In particular, we relate the effects of attacks on the watermark to signal interference in a fading environment and employ diversity transmission and channel estimation principles to improve performance. A nonstationary parallel binary symmetric channel (BSC) model of the watermark ch...

objective(s) four novel losartan analogues 5a-d were synthesized by connecting a dihydropyridine nucleus to imidazole ring. the effects of 5a and 5b on angiotensin receptors (at') and l-type calcium channels were investigated on isolated rat aorta. materials and methods aortic rings were pre-contracted with 1 pm angiotensin ii or 80 mm kcl and relaxant effects of losartan, nifedipine, 5a a...

Compound Poisson population models are particular conditional branching process models. A formula for the transition probabilities of the backward process for general compound Poisson models is verified. Symmetric compound Poisson models are defined in terms of a parameter θ ∈ (0,∞) and a power series φ with positive radius r of convergence. It is shown that the asymptotic behavior of symmetric...

Abstract The mutual information for the binary symmetric channel as well as for the discrete symmetric channel consisting of 4-input/output (I/O) symbols is explicitly calculated using the generalized second law of thermodynamics which was recently proposed by the first two authors. For equiprobable I/O the mutual information of the examined channels has a very simple thermodynamic form as a fu...

A new lower bound on the error probability of maximum likelihood decoding of a binary code on a binary symmetric channel (BSC) was proved in Barg and McGregor (2004, cs.IT/0407011). It was observed in that paper that this bound leads to a new region of code rates in which the random coding exponent is asymptotically tight, giving a new region in which the reliability of the BSC is known exactly...

Once a wireless sensor network (WSN) is stable and has been running for a while, sensors start to fail due to hardware problems, battery exhaustion or even due to their physical destruction. In any case, the administrator of the network may wish to replace the damaged nodes with new ones to reinforce the coverage area. In this paper we make use of an out of band channel (OOB) to bootstrap an au...

For information transmission, a binary symmetric channel is used. There is also another noisy binary symmetric channel (feedback channel), and the transmitter observes (without delay) all outputs of the forward channel via the feedback channel. Transmission of nonexponentially many messages is considered (i.e., the transmission rate is zero). The achievable decoding error exponent for this comb...