Yayın tarihi için 5- Diğer Birimler | Other Units listeleme
Toplam kayıt 1997, listelenen: 21-40
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Two reflector non symmetric shaped antenna systems
(IEEE, 2000)Two reflector antenna systems with non symmetric reflecting surfaces under GO approximation are investigated. It is shown, that the problem of forming desired far field pattern leades to solving the system of partial ... -
A new algorithm for joint time and phase synchronization in OFDM systems
(IEEE, 2000)In this paper, a computationally efficient algorithm is presented for joint maximum likelihood (ML) timing and carrier phase synchronization of OFDM systems employing M-PSK modulation scheme with additive Gaussian noise, ... -
Generation of optimum signature base sequences for speech signals
(IEEE, 2000)In our previous publications [1-6], we proposed a novel method to represent signals in terms of, so called, "Signature Base Functions-SBF' which were extracted from the physical features of the waveform under consideration. ... -
Joint ML timing and phase estimation in OFDM systems using the EM algorithm
(IEEE, 2000)In this paper, a computationally efficient algorithm is presented for joint maximum likelihood (ML) timing and carrier phase estimation of OFDM systems employing M-PSK modulation scheme with additive Gauissian noise, based ... -
The statistics of energy states of a Hookean model for proteins
(TÜBİTAK, 2000)A generic model of a random polypeptide chain, with discrete torsional degrees of freedom and Hookean springs connecting pairs of hydrophobia residues, reproduces the energy probability distribution of real proteins over ... -
Representation of speech signals by single signature base function within optimum frame length
(IEEE, 2000)Before this study, we proposed a novel method to represent signals in terms of, so called, “Signature Base Functions-SBF" which were extracted from the physical features of the waveform under consideration. SBF were ... -
On the contribution of higher order terms to solitary waves in fluid filled elastic tubes
(Birkhauser Verlag, 2000-01)In the present work, employing the nonlinear equations of an incompressible, isotropic and elastic thin tube and the approximate equations of an incompressible inviscid fluid, the propagation of weakly nonlinear waves, in ... -
A method for higher-order expansion in non-linear ion-acoustic waves
(Pergamon-Elsevier Science, 2000-03)The basic equations describing the non-linear ion-acoustic waves in a cold collisionless plasma, in the longwave limit, is re-examined through the use of a modified multiple-scale expansion method. Expanding the field ... -
Scattering of electromagnetic waves by a rectangular impedance cylinder
(Elsevier Science, 2000-04)A uniformly valid asymptotic solution is developed for the diffraction of a high-frequency wave by an infinitely long rectangular cylinder having different impedance walls. The incident wave is generated by a line source ... -
Modulation of non-linear axial and transverse waves in a fluid-filled thin elastic tube
(Pergamon-Elsevier Science, 2000-07)In the present work, utilizing the non-linear equations of a pre-stressed thin elastic tube filled with an incompressible inviscid fluid the propagation of weakly non-linear waves in such a medium is studied. Considering ... -
Confluent edge conditions for the electromagnetic wave at the edge of a wedge bounded by material sheets
(Elsevier ScienceWave Motion, 2000-07)The edge conditions which dictate the asymptotic behaviour of the electromagnetic field near the edges play a crucial role in solving boundary-value problems involving boundaries having edges. In analytical studies they ... -
Dissipative dynamics and the statistics of energy states of a Hookean model for protein folding
(Kluwer Academic Publishers-Plenum Publishers, 2000-07)A generic model of a random polypeptide chain, with discrete torsional degrees of freedom and Hookean spring connecting pails or hydrophobic residues, reproduces the energy probability distribution of real proteins over a ... -
Testing a hypothesis for the evolution of sex
(World Scientific Publishing Company, 2000-07-11)An asexual set of primitive bacteria is simulated with a lit-string Penna model with a Fermi function for survival. A recent hypothesis by Jan, Stauffer, and Moseley on the evolution of sex from asexual cells as a strategy ... -
A generalization of the Wiener-Hopf approach to direct and inverse scattering problems connected with non-homogeneous half-spaces bounded by n-part boundaries
(Oxford Univ Press, 2000-08)The classical Wiener-Hopf method connected with mixed two-part boundary-value problems is generalized to cover n-part boundaries. To this end one starts from an ad-hoc representation for the Green function, which involves ... -
On the equilibrium of a rigid body suspended by a set of linear springs
(John Wiley & Sons, 2000-08)In this paper an approach is described for determining equilibrium states of a rigid body suspended elastically in space by a set of linear springs. This system is considered as a two-terminal generalized spring with ... -
The boundary layer approximation and nonlinear waves in elastic tubes
(Pergamon-Elsevier Science, 2000-09)In the present work, employing the nonlinear equations of an incompressible, isotropic and elastic thin tube and approximate equations of an incompressible viscous fluid, the propagation of weakly nonlinear waves is examined. ... -
Calculation of the T-X phase diagram for a mixture of liquid crystals
(Pergamon-Elsevier Science, 2000-12)In this study we calculate the T-X phase diagram for a mixture of liquid crystals. In this calculation we use a mean field theory We fit our calculated phase line equations to the experimental data from the literature. ... -
A real frequency approach to describe lossless two-ports formed with mixed lumped and distributed elements
(Urban & Fischer Verlag, 2001)The design of microwave filters, matching networks, amplifiers, that Is the "Broadband Networks" with mixed lossless lumped and distributed elements, has been a significant concern of the circuit theoreticians of the field. ... -
Cascade synthesis of two-variable lossless two-port networks with lumped elements and transmission lines: a semi-analytic procedure
(Tylor & Francis Ltd, 2001)Two-variable characterization of cascades composed of lossless two-port networks with lumped elements and transmission lines is considered. The problems associated with the construction of scattering functions in two ... -
A computer aided design technique for hybrid and monolithic microwave amplifiers employing distributed equalizers with lumped discontinuities
(IEEE, 2001)This paper will addres the use of mixed lumped and distributed elements in the matching equalizers of microwave amplifers for hybrid and monolithic MIC realizations. In this work we show how the computer aided real frequency ...
