Güncel Gönderiler: Elektrik ve Otomasyon Bölümü
Toplam kayıt 47, listelenen: 21-40
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A subspace based progressive coding method for speech compression
(ELSEVIER SCIENCE BV, 2017)In this study, two novel methods, which are based on Karhunen Loeve Transform (KLT) and Independent Component Analysis (ICA), are proposed for coding of speech signals. Instead of immediately dealing with eigenvalue ... -
Size- and composition-dependent structure of ternary Cd-Te-Se nanoparticles
(SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2018)In this study, the geometrical, thermal, and energetic properties of zinc-blende CdTe1-xSex (x = 0.25, 0.50, and 0.75) nanoparticles were investigated using the bond order potential based on the modern classical molecular ... -
Electronic structure, optical and structural properties of organic 5,5 '-Dibromo-2,2 '-bithiophene
(ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2018)The changes in the electronic, optical and structural properties of the title compound have been investigated using experimental and theoretical techniques. The semi-emprical relations have been proposed for the calculation ... -
Electronic structure, optical and structural properties of Si, Ni, B and N-doped a carbon nanotube: DFT study
(ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2018)The electronic structure, structural and optical properties of a carbon nanotube (CNT) and silicon (Si), nickel (Ni), boron (B) and nitrogen (N)-doped CNTs have been investigated by density functional theory (DFT) simulations. ... -
Study of structural, optical properties and electronic structure of PTCDI-C5 organic nanostructure
(ELSEVIER SCIENCE BV, 2018)This work reports the change in the structural, electronic, spectroscopic and optical properties of N,N'-Dipentyl-3,4,9,10-perylenedicarboximide (PTCDI-C5) small molecule via experimental and theoretical techniques. ... -
Analysis of the geometrical properties and electronic structure of arsenide doped boron clusters: Ab-initio approach
(ELSEVIER SCIENCE SA, 2018)Density functional theory (DFT) and coupled-cluster (CCSD(T)) theory have been applied to investigate the geometric, growth pattern, bonding, stability, dissociation, adsorption and electronic properties of arsenide doped ... -
Ab initio study of structural and electronic properties of SinC5-nH8 (n=0-5) series: Probing the 2D to 3D structural transition
(ELSEVIER SCIENCE SA, 2018)In this study, we studied the structural and electronic properties in the SinC5-nH8 (n = 0-5) series using ab initio calculations. We performed global minimum and low-lying isomers search for the C5H8 , SiC4H8 , Si2C3H8 , ... -
Photonic, spectroscopic properties and electronic structure of PTCDI-C8 organic nanostructure
(ELSEVIER SCIENCE BV, 2018)The changes in the structural, electronic, vibrational and photonic properties of N,N'-Dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) one-dimensional nanostucture have been investigated using experimental and theoretical ... -
Frequency Domain Analysis of Laser and Acoustic Pressure Parameters in Photoacoustic Wave Equation for Acoustic Pressure Sensor Designs
(OPTICAL SOC KOREA, 2018)A pressure wave created by the photoacoustic effect is affected by the medium and by laser parameters. The effect of these parameters on the generated pressure wave can be seen by solving the photoacoustic wave equation. ... -
Photophysical and optical properties of 5-Bromo-2-nitropyridine organic molecule: Experiment and theory
(ELSEVIER SCIENCE BV, 2018)The changes in the structural, electronic, vibrational and optical properties of 5-Bromo-2-nitropyridine organic molecule have been investigated. The semi-emprical realtions have been proposed for the calculation of the ... -
Structural phase transition and electronic properties of CaO under high pressure
(IOP PUBLISHING LTD, 2018)The crystal structure of the CaO compound is studied up to 300 GPa under high hydrostatic pressure using the density functional theory (DFT) with the generalized gradient approximation (GGA). Pressure-volume relationships, ... -
A Simple, High Sensitive Fiber Optic Microphone Based on Cellulose Triacetate Diaphragm
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2018)We present a high sensitive fiber-optic microphone (FOM) with a wide measuring range based on a cellulose triacetate diaphragm in this work. The average signal-to-noise ratio (SNR) of the proposed FOM is measured 50.86 dB ... -
Photophysical, spectroscopic properties and electronic structure of BND: Experiment and theory
(ELSEVIER SCIENCE SA, 2018)The electronic structure, photophysical and spectroscopic properties of 2,5-Bis(1-naphthyl)-1,3,4-oxadiazole (BND) have been researched based on different solvent environments. The refractive index (n) is calculated using ... -
A novel approach based on simulation of tunable MEMS diaphragm for extrinsic Fabry-Perot sensors
(ELSEVIER SCIENCE BV, 2019)A new tunable structure with a Three Leaf Clover (TLC) geometry has been proposed for use in diaphragm-based acoustic pressure sensors. The sensitivity and frequency response of this new structure, which will be an alternative ... -
Characterization, optical and nonlinear optical properties of TAZ organic material
(ELSEVIER GMBH, 2019)Since organic materials have applications in many fields, characterization and optical parameters of 3-(Bipheny1-4-y1)-5-(4-tert-butylpheny1)-4-phenyl-4H-1,2,4-triazole (TAZ) molecule have been investigated in different ... -
Spectral analysis for photoacoustic pressure sensor designs: Theoretical model improvement and experimental validation
(ELSEVIER SCIENCE SA, 2019)In the pulsed laser photoacoustic (PA) detection and spectroscopy applications, the fundamental frequency of the PA signal produced, and the sensor resonance frequency should be as close as possible to each other so that ... -
Structural and electronic properties of BiOF with two-dimensional layered structure under high pressure: Ab initio study
(PERGAMON-ELSEVIER SCIENCE LTD, 2019)In this work, the crystal structure of the BiOF is studied under high hydrostatic pressure using ab initio calculations. Pressure-volume relationships and structural transitions are investigated using Siesta method. A ... -
Structural evolution and electronic properties of CaS: An ab initio study
(ELSEVIER SCIENCE BV, 2019)CaS crystallizes in cubic NaCl (B1) type structure with symmetry Fm (3) over barm. In this work, the structural and electronic properties of CaS were investigated by considering the Density Functional calculations within ... -
Use of 2D In2Se3 Single Crystal as a Diaphragm Material for Fabry-Perot Fiber Optic Acoustic Sensors
(AMER SCIENTIFIC PUBLISHERS, 2019)The diaphragm-based sensor tip, which has a critical design in Fabry-Perot fiber optic acoustic sensor production, directly affects device performance. Fabry-Perot fiber optic acoustic sensors tip designs and investigations ... -
Enhancement of electronic, photophysical and optical properties of 5,5 '-Dibromo-2,2 '-bithiophene molecule: new aspect to molecular design
(ELSEVIER SCIENCE BV, 2019)The aims of this study were to enhance electronic, photophysical and optical properties of molecular semiconductors. For this purpose, the isomers of the B-doped molecule (5,5'-Dibromo-2,2'-bithiophene) have been investigated ...
