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The role of dislocation scattering in n-type GaN films | The lateral transport in GaN films produced by electron cyclotron resonance plasma-assisted molecular beam epitaxy doped n type with Si to the levels of 1015–1020 cm−3 was investigated. The room temperature electron mobility versus carrier concentration was found to follow a family of bell-shaped curves consistent with... | Abstract A layer of random defects in the simple cubic Ising model with nearest neighbor ferromagnetic interactions of strength J is considered. Using the real space renormalization group method we calculate defect free energy in the whole temperature range. Specifically, we analyze: the layer of diluted defects, the l... | eng_Latn | 49,080 |
Photoconductive decay in LCVD/PECVD low temperature grown GaN | Photoconductive decay in undoped GaN has been investigated at room temperature using an ArF excimer laser as illuminative source and a boxcar integrator for detection of decay signals. GaN films were grown by combined laser and microwave plasma enhanced chemical vapour deposition at 550°C. The respective room temperatu... | Using ultrafast optical-pump terahertz-probe spectroscopy, we study the THz dynamics and electronic cooling in few-layer epitaxial and CVD graphene; a microscopic theory of carrier-carrier and carrier-phonon interactions accounts quantitatively for the observed dynamics. | eng_Latn | 49,092 |
The application of microelectrodes to the study of the methoxylation of furan | Abstract Steady state microelectrode techniques are used to investigate the bromide mediated, anodic oxidation of furan in methanol, a reaction of considerable synthetic interest. It is confirmed that the reaction occurs via a rate determining step between bromine and the furan. The dependence of the steady state limit... | We calculate the localization lengths for lattice fermions with random gap in two dimensions. This is done by means of the transfer matrix approach. Numerical results are analyzed for finite-size scaling and they exhibit a metal-insulator and a insulator-insulator transition. At these transitions we calculate the criti... | eng_Latn | 49,101 |
DFT Theoretical Investigation of Ionization Potential and Electron Affinity of 2,6-Dithiopurine | All the molecular structures of thirty-three possible 2,6-dithiopurine tautomers have been optimized by density functional theory(DFT) method at B3LYP/6-311G(d,p) level.The paper also calculates the HOMO and the LUMO energy,the first ionization potential,electron affinity and energy level gap between HOMO and LUMO on a... | Abstract We report on n -channel tunneling field-effect transistors (TFET) with a tensile strained Si channel and a compressively strained Si 0.5 Ge 0.5 source. The device shows good performance with an average subthreshold swing S of 80 mV/dec over a drain current range of more than 3 orders of magnitude. We observed ... | eng_Latn | 49,103 |
Fine and Large Coulomb Diamonds in a Silicon Quantum Dot | We experimentally study the transport properties of silicon quantum dots (QDs) fabricated from a highly doped n-type silicon-on-insulator wafer. Low noise electrical measurements using a low temperature complementary metal-oxide-semiconductor (LTCMOS) amplifier are performed at 4.2 K in liquid helium. Two series of Cou... | The dependence of the differential cross section ${\mathrm{d}\sigma}/{\mathrm{d}p_{\perp}}$ of inclusive heavy quark production in pp and $\bar{\mathrm{p}}$p collisions on the renormalization and factorization scales is investigated. The implications of our results for experiments at TEVATRON and LHC are discussed. In ... | eng_Latn | 49,108 |
[The effect of hemocarbosorption and biohemosorption on oxygen metabolism and intoxication in patients with peritonitis in multiple organ failure]. | An analysis of results of treatment of patients with diffuse peritonitis has shown that the syndrome of polyorganic insufficiency is found in 24.2% of cases. A system of score screening assessment of severity of the course of polyorganic insufficiency syndrome has been developed. The dynamics of indicators of intoxicat... | Abstract We theoretically study the optical absorption in a quantum well with the semi-parabolic potential plus the semi-inverse squared potential (SPSIS) in the presence of a static magnetic field in which both one- and two-photon absorption processes have been taken into account. The expression of the magneto-optical... | eng_Latn | 49,116 |
Effect of nonequilibrium phonons on superconducting states with two coexisting energy gaps | It is shown that under the influence of tunnel currents, superconductors may exhibit a ''first order transition'' to a state with two coexisting energy gaps. An energy and number conserving approximation for the collision operator is used to explicitly take into account in the theory the effect of nonequilibrium phonon... | We have developed a new framework of antisymmetrized molecular dynamics (AMD), to adequately treat the I=0 KN interaction, which is essential to study kaonic nuclei. The improved points are 1) pK{sup -}/nK{sup 0} mixing and 2) total spin and isospin projections. These improvements enable us to investigate various kaoni... | eng_Latn | 49,119 |
Multiple frequencies in quantum oscillations from underdoped YBa_2Cu_3O_6.5 | High-precision measurements of the de Haas-van Alphen effect in the underdoped high-temperature superconductor \Y reveal three distinct frequencies in the quantum oscillations spectra. Analysis based on the standard Lifshitz-Kosevich theory reveal two satellite frequencies at F$_2$ = 450 T and F$_3$ = 630 T, on either ... | Through the study of the high-speed signal PCB(Printed Circuit Board)layout in the structure of the signal trace,for needs of smooth and controllable in PCB layout of high-speed digital server motherboard system,this paper proposes a three degree quasi-uniform B-spline dynamical fitting method.By reading overlap shape ... | eng_Latn | 49,128 |
Sinusoidally Modulated Silicon Leaky Wave Antenna for sub-THz Applications | A new sub-THz leaky wave antenna based on grounded silicon substrate for chip to chip communication applications is presented. The proposed leaky wave antenna is based on sinusoidally modulated surface reactance. This surface reactance is implemented by using varying width strips on the top of a grounded silicon substr... | We present a comprehensive study of the frequency shifts associated with the lattice potential in a Sr lattice clock by comparing two such clocks with a frequency stability reaching 5x10{sup -17} after a 1 h integration time. We put the first experimental upper bound on the multipolar M1 and E2 interactions, significan... | eng_Latn | 49,148 |
1 Fundamental Problems for Universal Quantum Computers | Several fundamental problems and restrictions for universal quantum computers are pointed out. Firstly, it is shown that the halting of universal quantum computers is incompatible with the constraint of unitarity of the quantum dynamics. Secondly, the consequences of the second law of thermodynamics and the existence o... | Using ultrafast optical-pump terahertz-probe spectroscopy, we study the THz dynamics and electronic cooling in few-layer epitaxial and CVD graphene; a microscopic theory of carrier-carrier and carrier-phonon interactions accounts quantitatively for the observed dynamics. | eng_Latn | 49,158 |
Tensor random fields in conductivity and classical or microcontinuum theories | We study the basic properties of tensor random fields (TRFs) of the wide-sense homogeneous and isotropic kind with generally anisotropic realizations. Working within the constraints of small strains, attention is given to antiplane elasticity, thermal conductivity, classical elasticity and micropolar elasticity, all in... | Abstract In extension of an earlier note 1) we present some observations of different electric and magnetic switching phenomena in thin polycrystalline EuS film junctions. A possible explanation for qualitatively different nonllinearities of the current transport behavior in spite of very similar preparation conditions... | eng_Latn | 49,162 |
Effects of Boundary Conditions and Source Dimensions on the Effective Thermal Conductivity of a Printed Circuit Board | The heat conduction equation and its boundary conditions were used to show that the planar and normal thermal conductivities of an orthotropic model of a printed circuit board were functions of source to board size ratio, top and bottom side boundary conditions, and thickness and thermal conductivity of each layer. Num... | This paper describes a novel technique for studying structure-transport correlations in nanoscale multilayer thin films. Here, local current-voltage characteristics from simplified magnetic tunnel junctions are measured in situ on cross-sectional transmission electron microscopy (TEM) samples and correlated directly wi... | eng_Latn | 49,173 |
Excitation localization effects in nanoscale molecular clusters (J-aggregates) | An analysis of experimental data from low-temperature selective spectroscopy and single J-aggregate spectroscopy reveals a hierarchy of exciton states within the confines of the absorption band of J-aggregates which are formed by relaxation of an excited state. For J-aggregates, which are characterized by substantial s... | An instruction-level simulator for IBM 3090 with VF (vector facility) has been developed for studying the performance of vector processors and their memory hierarchies. Results of a study of the locality of several large scientific applications are presented. The cache miss ratios of vectorized applications are found t... | eng_Latn | 49,175 |
Approximate separability for the hydrogen atom in a uniform magnetic field | Starting from the O(4) supersymmetry of the field-free hydrogen atom, the authors study the spectrum of the H atom in a uniform magnetic field by exact numerical calculations in a complete basis. They define a label K that is approximately conserved and hence leads to very small anticrossings in a region reaching well ... | Abstract This paper presents a theoretical model for the behavior of solid solutions of group III and V impurities in silicon. The impurities are considered as weak electrolytes dissolved in an ionizing medium. The Fermi level, the activity coefficient and the dissociation equilibrium constants for the dopants are calc... | eng_Latn | 49,176 |
AlGaN Channel High Electron Mobility Transistors with Ultra-Low Drain-Induced-Barrier-Lowering Coefficient | The conventional AlGaN/GaN high electron mobility transistor (HEMT), the AlGaN/GaN/AlGaN HEMT, and the AlxGa1−xN/AlyGa1−yN HEMT are fabricated on sapphire substrates to study the drain-induced barrier-lowering (DIBL) effect. It is found that the AlxGa1−xN/AlyGa1−yN HEMT with AlGaN channel has the lowest DIBL coefficien... | Let W be a UHF algebra and sQ(D) the disk algebra. If W = [U,ll >1 I ]Jand a is a product-type automorphism of W which leaves each 21,, invariant, then a defines an embedding t1 2>(D) n+ 1 D The inductive limit of this system is a Banach algebra whose maximal ideal space is closely related to that of the disk algebra i... | eng_Latn | 49,180 |
Inhibition of Alzheimer's amyloid-β peptide aggregation and its disruption by a conformationally restricted α/β hybrid peptide | Insertion of an anthranilic acid in an amyloidogenic peptide sequence generates a novel conformationally restricted α/β-hybrid peptide that inhibits amyloid formation of Aβ(1–40) and disrupts preformed fibrillar aggregates in vitro. Such β-sheet breaker hybrid peptides (BSBHps) may be useful for designing novel physiol... | We investigate the quantum anomalous Hall effect in a mixture of ultra-cold neutral bosons and fermions held on a hexagonal optical lattice. In the strong atom-atom interaction limit, composite fermions composed of one fermion with bosons or bosonic holes in the mixture are formed. Such composite fermions have already ... | eng_Latn | 49,191 |
A Note on Biquaternionic MIT Bag Model | The term ”bag model” unifies several attempts to construct a mathematical description of the phenomenon of quark confinement. Such models are often used for estimating different characteristics of a hadron. The aim of this note is to add one more characterization to the list of known characterizations of Dirac equation... | We present an electronic structure calculation of the valence band for some II--VI binary/ternary alloy interfaces. We use the empirical tight-binding method and the surface Green's function matching method. For the ternary alloys we use our previously set Hamiltonians they describe well the band gap change with compos... | kor_Hang | 49,199 |
A Relation between the Correlation Dimensions of Multifractal Wavefunctions and Spectral Measures in Integer Quantum Hall Systems | We study the time evolution of wavepackets of non-interacting electrons in a two-dimensional disordered system in strong magnetic field. For wavepackets built from states near the metal-insulator transition in the center of the lowest Landau band we find that the return probability to the origin $p(t)$ decays algebraic... | We model cross-market Bitcoin prices as long-memory processes and study dynamic interdependence in a fractionally cointegrated VAR framework. We find long-memory in both the individual markets and the system of markets depicting non-homogeneous informational inefficiency. Moreover, Bitcoin markets are found to be fract... | eng_Latn | 49,216 |
Energy-level pinning and the 0.7 spin state in one dimension: GaAs quantum wires studied using finite-bias spectroscopy | We study the effects of electron-electron interactions on the energy levels of GaAs quantum wires (QWs) using finite-bias spectroscopy. We probe the energy spectrum at zero magnetic field, and at crossings of opposite-spin-levels in high in-plane magnetic field B. Our results constitute direct evidence that spin-up (hi... | We show that Variational Autoencoders consistently fail to learn marginal distributions in latent and visible space. We ask whether this is a consequence of matching conditional distributions, or a limitation of explicit model and posterior distributions. We explore alternatives provided by marginal distribution matchi... | eng_Latn | 49,225 |
The paper presents the modeling of subsea coaxial cable as a FIR filter on MATLAB. The subsea coaxial cables are commonly used in telecommunication industry and, oil and gas industry. Furthermore, this cable is unlike a filter circuit, which is a “lumped network” as individual components appear as discrete items. There... | Static analysis forms the basis of calculations in structural design of overhead power lines. The environmental loads considered in design can be assumed static (icing) or quasi-static (idealized steady wind). However, dynamic analysis is necessary to predict line transient response to shock loads such as those induced... | By using a superluminescent diode as the light source and a depolariser inside the fibre coil, a constant scale factor is achieved without using polarisation control elements. For long-term behaviour an RMS-bias drift of 10 degrees/h is obtained. | eng_Latn | 49,278 |
The Duane plot is a simple and widely used graphical technique in the analysis of repairable systems. The fitting of a straight line to points in that graph serves to determine the behavior of the system assuming a power law process. However, the classical least squares fitting suffer from lack of robustness and it is ... | In this article, a new methodology to determine the criticality of the components of the overhead contact line (OCL) system by means of a component criticality index is proposed. The methodology is based on classic failure mode and effects analysis (FMEA) but adapted to its application on this system, with characterist... | Smartphones may be seen as miniature toolboxes to perform Physics experiments. In this paper, we present three different “optics workbenches" mainly based on the light meter of a smartphone. One is aimed at the precise study of Malus law and other effects associated to linearly polarized light, the second allows quanti... | eng_Latn | 49,284 |
Analysis of polarization-mode coupling by acoustic torsional waves in optical fibers | Coupling of polarization modes of the LP01 spatial mode by acoustic torsional waves in an optical fiber is considered in detail. Analytic expressions of the coupling coefficients based on the combined effects of birefringence and photoelastic contributions are found. The results show that for regular fibers the birefri... | In this paper we study the multivariate ANOVA decomposition for $1$-periodic functions on the torus. In particular we use the integral projection operator that leads to the classical ANOVA decomposition. Relationships between the Fourier coefficients of the function and its ANOVA terms lead to special frequency index s... | eng_Latn | 49,323 |
A wave propagation matrix method in semiclassical theory | Abstract A wave propagation matrix method is used to derive the semiclassical formulae of the multi-turning-point problem. A phase shift matrix and a barrier transformation matrix are introduced to describe the process of a particle travelling through a potential well and crossing a potential barrier respectively. The ... | Abstract. One of the goals, in the context of nonparametric regression by smoothing spline functions, is to choose the optimal value for the smoothing parameter. In this paper, we deal with the cross validation method(CV), as a performance criteria for smoothing parameter selection. First, we implement a CV-based algor... | eng_Latn | 49,328 |
The Flexible Dispersion-managed Optical Links with a Randomly Distributed RDPS | Dispersion management (DM), optical phase conjugation (OPC), and the combination of these two are promising techniques to compensate for the signal distortion due to group velocity dispersion and optical Kerr effects of single mode fiber. The goal of this paper is to investigate the system performance depending on the ... | Introduction ::: The purpose of this study is to compare the tissue incorporation of a novel fenestrated and non-fenestrated crosslinked porcine dermal matrix (CPDM) (CollaMend™, Davol Inc., Warwick, RI) in a porcine model of ventral hernia repair. | eng_Latn | 49,330 |
Applied technique of the welding method of long distance transmission pipeline | Welding methods of long-distance transportation pipeline are essential for its manufacturing quality,reliability and security of operation.A reasonable selecting of welding methods and applying corresponding welding technology are the keys to ensure the welding quality of long-distance transportation pipeline.According... | In this study, we present the analytic temperature profile in cylindrical geometry for transmissive optics. The model permits the explicit calculation of the optical path length difference across the radial direction of a rod. This allows us to determine the specific length of the compensation material to remove the th... | eng_Latn | 49,331 |
Experimental determination of multiple instability regions by Fourier filtering methods in a single-mirror feedback scheme | In this study, a special Fourier filtering scheme is utilized to give an experimental demonstration of a basic property of many optical pattern forming systems. This is the existence of a sequence of tongue-like instability regions at increasing values of transverse wave numbers. This work determines the boundaries of ... | A methodology for hierarchical statistical circuit characterization which does not rely upon circuit-level Monte Carlo simulation is presented. The methodology uses principal component analysis, response surface methodology, and statistics to directly calculate the statistical distributions of higher-level parameters f... | eng_Latn | 49,346 |
Marchenko Equation for Time Reversal Imaging in an Underwater Acoustic Waveguide | Time reversal (TR) has been used to acoustic imaging to recover the spatial distribution of scatterers or the source location in an underwater acoustic waveguide. This study presents a method based on Marchenko equation, and we focus on achieving acoustic source distribution inside the medium. However, to achieve accur... | 4 pages.-- PACS numbers: 05.45.Xt, 87.10.+e.-- ArXiv pre-print: http://arxiv.org/abs/nlin.CD/0512009.-- Final full-text version of the paper available at: http://dx.doi.org/10.1103/PhysRevE.73.055202. | eng_Latn | 49,350 |
BOTDR optical fiber sensor temperature performance optimization based on DoE | This Paper presents the results of simulations as well as theoretical discussions on the application of temperature sensing using BOTDR optical fiber sensor which based on spontaneous Brillouin scattering.Several traditional definitions of Stimulated Brillouin Scattering(SBS) threshold power and a new definition using ... | This paper deals with the study on the extracting conditions of flavonoid from tea.Response surface methodology was used to obtain the optimum extracting conditions by Design-Expert 6.0.The research findings show that the optimum extracting conditions were as follows:extracting 60 min,water temperature 80℃,60%alcohol,1... | eng_Latn | 49,357 |
Weighted Mean of Signal Intensity for Unbiased Fiber Tracking of Skeletal Muscles: Development of a New Method and Comparison With Other Correction Techniques | ObjectivesThe aim of this study was to investigate the origin of random image artifacts in stimulated echo acquisition mode diffusion tensor imaging (STEAM-DTI), assess the role of averaging, develop an automated artifact postprocessing correction method using weighted mean of signal intensities (WM | We present X-ray light curves and the energy spectra for two contact binaries SW Lac and W UMa, which are obtained from the ASCA(Advanced Satellite for Cosmology and Astrophysics) observations. We find that both sources show appreciable flux variations during the observatoins, and the variations are erratic and are not... | eng_Latn | 49,361 |
Toward improved P300 speller performance in outdoor environment using polarizer | P300, which is usually evoked by visual stimulus, is widely used in electroencephalography (EEG) based brain computer interface (BCI) studies. As an application-oriented BCI study, the P300 speller would inevitably be used in outdoor environments. However, the visual stimulation effect might be interfered by the reflec... | This paper describes a new methodology of estimating free-space optical communications link budgets to be expected in conditions of severe turbulence. The approach is derived from observing that the ability of an adaptive optics (AO) system to compensate turbulence along a path is limited by the transmitter and receive... | eng_Latn | 49,362 |
Second-harmonic generation by off-axis propagation in an anisotropic optical waveguide | Second-harmonic generation (SHG) by means of radiation modes (the Cerenkov-type radiation scheme) in an anisotropic optical waveguide by off-axis propagation has been studied theoretically. If the second-harmonic wave is a leaky wave of the waveguide, the Cerenkov-type SHG efficiency may be comparable with the efficien... | This paper deals with robust estimation of states and unknown inputs for a class of non linear system described by Takagi-Sugeno fuzzy models. The proposed approach is developed on the basis of adaptive Luenberger observer theory. A robustness study, using the L 2 technique, is carried out to take in consideration the ... | eng_Latn | 49,383 |
Numerical Study of Interactions Between Phase II of OC4 Wind Turbine and Its Semi-Submersible Floating Support System | The motion response of the floating support system is critical in designing and confirming the safety and efficiency of an offshore wind turbine. This paper aims to study the interaction between the wind turbine and its semi-submersible floating system for Phase II of the Offshore Code Comparison Collaboration Continua... | We proposed a simple method to realize optical Fourier transform during the nonlinear wave shaping processes. In this method, an integrated optical superlattice is designed to realize multiple optical functions, which plays important roles in both the nonlinear harmonic generation process and the optical Fourier Transf... | eng_Latn | 49,387 |
Characteristics of propagation function of Plane wave diffracted by small circular band | Based on the scalar diffraction theory and the boundary condition of Rayleigh-Sommerfeld,the accurate on-axis propagating wave function of plane wave diffracted by small circular band is obtained by solving the first integral of Rayleigh-Sommerfeld.By means of the function,the extremas of on-axis light intensity,the lo... | This paper considers a method to realize a two-valued input three-valued output function f:{0, 1}/sup n//spl rarr/{0, 1, 2} by using a cascade of four-input cells. Decomposition of a group function is used to find a canonical form. We show that the Walsh spectrum specifies the canonical form, and the number of non-zero... | eng_Latn | 49,388 |
what does otdr stand for in fiber optics | New: Download a free OTDR Simulator for PCs. After you study this page, you can download a free OTDR simulator to run on your PC. The Optical Time Domain Reflectometer (OTDR) is useful for testing the integrity of fiber optic cables. It can verify splice loss, measure length and find faults. The OTDR is also commonly u... | SFDR is defined as the ratio of the RMS value of the carrier wave (maximum signal component) at the input of the ADC or output of DAC to the RMS value of the next largest noise or harmonic distortion component (which is referred to as a âspuriousâ or a âspurâ) at its output. | eng_Latn | 49,411 |
An ab initio computational study of the properties of four linear dihydrogen-bonded complexes pairing MH2 (M = Zn, Cd) with HCCRgF (Rg = Ar, Kr) was undertaken at the MP2/DGDZVP level of theory. The calculated complexation energies of the linear complexes vary between 6.5 kJ/mol for M = Zn to 8.5 kJ/mol for M = Cd. Equ... | In the present investigation, we performed a thorough study of potential energy curves, rovibrational spectra, and spectroscopic constants for complexes pairing via dihydrogen bonds. In particular, we dealt with LiH···HX (X = F, CN, CCH, CCF, CCCl) complexes by employing accurate electronic energy calculations at the M... | We prove uniform local-in-time existence and uniqueness of solutions to the density-dependent magnetohydrodynamic equations. | eng_Latn | 49,466 |
The hyperpolarizability has been extensively studied to identify universal properties when it is near the fundamental limit. Here, we employ the Monte Carlo method to study the fundamental limit of the second hyperpolarizability. As was found for the hyperpolarizability, the largest values of the second hyperpolarizabi... | Sum rules have been used to show that there is an upper limit to molecular susceptibilities. Such calculations have been applied to the diagonal part of the second-order susceptibility tensor as measured with electric-field-induced second-harmonic generation, and to a variety of third-order measurements. The results sh... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 49,499 |
The partial molar volume of ions in water furnishes an indication, if not precise information, about the nature of ionic solvation (1–5). Accordingly, it was hoped that differences in this term and particularly the effect of temperatures on the differences in the apparent partial molar volume for a series of ions in li... | The surface chemistry of aqueous solutions plays a ubiquitous role in many chemical and biological processes. Here, the authors probe the surfaces of sodium halide solutions with surface-specific femtosecond vibrational spectroscopy, and observe surface concentrations of halide ions several times greater than in the bu... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 49,509 |
Directed Self-Assembly of Quantum Dots in a Nematic Liquid Crystal | Self organizing anisotropic nematic liquid crystals (LCs) induce self-assembly on quantum dots (QDs) to form one-dimensional chains along the nematic director. Spatial ordering of QDs, achieved in the nematic LC matrix, can be controlled in a preferred direction on application of electric fields, gaining better self-as... | This paper comments the letter entitled "Network analysis of the state space of discrete dynamical systems" by A. Shreim et al. [Physical Review Letters, 98, 198701 (2007)]. We found that some theoretical analyses are wrong and the proposed indicators based on parameters of phase network can not discriminate dynamical ... | eng_Latn | 49,552 |
Polyelectrolytic aspects of the titration curve. The semi-flexible model. | An analysis is given of the theoretical approach to the quantitative description of proton dissociation curves for weak polyacids. The basic model of the counterion condensation theory has been used, with the modification reported in the preceding study (S. Paoletti, A. Cesàro, C. Arce Samper and J.C. Benegas, Biophys.... | We will now develop the approximation theory appropriate for the finite elements developed in Chapter 3. We take a constructive approach, defining an averaged version of the Taylor polynomial familiar from calculus. The key estimates are provided by some simple lemmas from the theory of Riesz potentials, which we deriv... | eng_Latn | 49,556 |
Optimisation of molecular structure for traction fluids | According to the guidelines for the molecular design of traction base fluids obtained from a previous study, more than 100 chemical compounds have been synthesised. Employing 61 naphthenic compounds whose chemical structures have been clearly identified, the optimisation of molecular structure has been studied regardin... | A reconstruction method of soot volume fraction and temperature distribution based on back-projection of flame image dual-channel intensities was proposed.The cross-section contour profiles of ethylene/air non-premixed axisymmetric flame were reconstructed.The results show that the inner ethylene gas was not thoroughly... | eng_Latn | 49,559 |
The CO chemisorption on some active sites of Pd clusters : A DFT study | Abstract The CO adsorption on Pd, Pd 2 and Pd 4 small clusters was studied using density functional methods; the theoretical results obtained here were compared with experimental vibration frequencies of CO adsorbed on supported Pd-nanoparticles. The results indicate that the CO adsorption over Pd 2 and Pd 4 clusters g... | The correlation suggested by van Noort1 in his Comment on our paper2 is an improvement of the Simamura correlation.3 Unfortunately, there is not sufficient information in our paper2 to compare both approaches. The uncertainties cited in ref 2 are not statistical but an expert’s estimation of the uncertainties of unknow... | eng_Latn | 49,564 |
Hydrogen bonding: Part 20. Infrared study of the high temperature β-form of choline chloride | Abstract Infrared spectral studies of β-choline chloride at 95°C clearly demonstrate the presence of OH … Cl hydrogen bonding. This observation contradicts an earlier conclusion, based on X-ray structural studies, that such hydrogen bonding could not occur in this high-temperature form of choline chloride. A moderate ... | A flow boiling heat transfer experiment platform was designed and built using alternative refrigerant R134a as the working fluid.It can be used for investigation on two-phase flow and boiling heat transfer characteristics and fluid-to-fluid modeling of critical heat flux.Some problems concerning the materials,welding,s... | eng_Latn | 49,576 |
Direction of separation and dependence of feed concentration in liquid thermogravitational columns | Abstract The direction of separation in a thermogravitational column was studied for 12 binary mixtures with the following components: Benzene, toluene, n-hexane, n-heptane, cyclohexane, carbon tetrachloride, tetrabromoethane, and tetrachloroethane. The separation sign is governed by the density of the components. A st... | Abstract : The report contains a brief analysis of the following items: (a) Two-dimensional steady flow (variational method), (b) One-dimensional unsteady flow (variational method), (c) Plasma with finite conductivity (exact solutions), (d) Approximate solutions and linearized equations, (e) New numerical methods, (f) ... | eng_Latn | 49,584 |
Theory of preferential solvation of nonelectrolytes | The concepts of local compositions around a solute and preferential solvation of a solute are defined in terms of the Kirkwood-Buff integrals. The difference between the local and the bulk composition is a measure of the preferential solvation of a solute with respect to the various components of the solvent. A statist... | Abstract We study a general nonlinear elliptic equation in the Orlicz setting with data not belonging to the dual of the energy space. We provide several Lorentz-type and Morrey-type estimates for the gradients of solutions under various conditions on the data. | eng_Latn | 49,585 |
TÉLOMÉRISATION ENÉMULSION DU STYRÈNE AVEC LES MERCAPTANS | Abstract The telomerization in emulsion of styrene is studied with two transfer agens: thioglycolic acid and 1,1,2,2-tetrahydro perfluorooctane thiol. The influence of the telogen-amount vs the degree of telomerization, that of the surfactant concentration and that of the nature of the initiator are investigated. The t... | We study in perturbative QCD the helicity amplitudes of the process ${\ensuremath{\gamma}}^{*}\stackrel{\ensuremath{\rightarrow}}{p}\ensuremath{\rho}p$ at large virtualities Q of the photon ${\ensuremath{\gamma}}^{*}.$ We estimate all spin-flip amplitudes taking into account an important effect of the scale behavior of... | yue_Hant | 49,617 |
Les méthodes de déconvolution et leurs limitations fondamentales | 2014 We deal first with the analogy between physical linear systems and convolution equations, and show the theoretical difficulties encountered when solving such equations (existence, uniqueness...). We define precisely the words deconvolution, apodization used by physicists. We then make a survey (not intended to be ... | Hydratation des cis- et trans-cyclooctenes et du dimethyl-2,3 butene-2 en alcools correspondants dans divers milieux | fra_Latn | 49,625 |
Monohydride and dihydride formation at Si(100) 2x1: A high resolution electron energy loss spectroscopy study | Abstract Results from EELS and LEED investigations on the interaction of atomic hydrogen with the Si(100) 2x1 surface give direct evidence for the formation of two distinct surface phases: a monohydride Si(100) 2x1:H and a dihydride Si(100) 1x1::2H phase. Temperature and exposure time determine which of the two phases ... | We present Monte Carlo simulation results for square-well homopolymers at a series of bond lengths. Although the model contains only isotropic pairwise interactions, under appropriate conditions this system shows spontaneous chiral symmetry breaking, where the chain exists in either a left- or a right-handed helical st... | eng_Latn | 49,652 |
Synthesis and structure determination of helical polymers | The recent remarkable progress in structural investigations of helical polymers by high-resolution atomic force microscopy provides their exact helical structures including helical pitch and handedness. Seeing is believing! | In this study muon-spin rotation (μSR) serves as a tool for sensitive monitoring of the environment of muoniated radicals in isotropic liquids. A systematic investigation of the behaviour of the hyperfine coupling constants of cyclohexadienyl-type radicals is performed, and it is found that they are in linear dependenc... | eng_Latn | 49,654 |
Chemical reaction rates of quasi-free electrons in non-polar liquids. The equilibrium CO2 + e− CO2−☆ | The forward and reverse rates of the reaction CO2 + e− CO2− were determined in tetramethylsilane, neopentane and 2,2,4-trimethylpentane as a function of temperature. The forward reaction is exothermic in solution but the equilibrium constant shifts over four orders of magnitude with changes in solvent. The change in en... | Let a neuronal population be composed of an excitatory group interconnected to an inhibitory group. In the Wilson-Cowan model, the activity of each group of neurons is described by a first-order nonlinear differential equation. The source of the nonlinearity is the interaction between these two groups, which is represe... | eng_Latn | 49,657 |
Analysis of 19F and 13C NMR spectra of tetrafluorophthalic anhydride and its derivatives | Abstract 19 F and 13 C NMR spectra of perfluorinated compounds (i.e., tetrafluorophthalic anhydride, its hydroxyl- and amino-derivatives, N-pentafluorophenyltetrafluorophthalimide, and hexafluoroindan-1,3-dione) were analysed. Different signals in NMR spectra were assigned based on the analysis of spin–spin coupling co... | We study the basic properties of tensor random fields (TRFs) of the wide-sense homogeneous and isotropic kind with generally anisotropic realizations. Working within the constraints of small strains, attention is given to antiplane elasticity, thermal conductivity, classical elasticity and micropolar elasticity, all in... | eng_Latn | 49,660 |
Liouvillian and Algebraic Solutions of Second and Third Order Linear Differential Equations | Abstract In this paper we show that the index of a 1-reducible subgroup of the differential Galois group of an ordinary homogeneous linear differential equation L ( y ) = 0 yields the best possible bound for the degree of the minimal polynomial of an algebraic solution of the Riccati equation associated to L ( y ) = 0.... | Self organizing anisotropic nematic liquid crystals (LCs) induce self-assembly on quantum dots (QDs) to form one-dimensional chains along the nematic director. Spatial ordering of QDs, achieved in the nematic LC matrix, can be controlled in a preferred direction on application of electric fields, gaining better self-as... | eng_Latn | 49,670 |
Inelastic-neutron-scattering study at low temperature of the quantum sine-Gordon breather in 4-methyl-pyridine with partially deuterated methyl groups. | Abstract Inelastic neutron scattering spectra of 4-methyl-pyridine with the partially deuterated methyl (4MP-CH 2 D) are interpreted within the quantum sine-Gordon theory. The bands are assigned to the quantized travelling states of the breather. The band splitting corresponds to different chain conformations. | Equations have been developed for describing the isotherms of extraction of rare-earth metal(III) [REM(III)] nitrates from aqueous concentrated solutions by 100% diisoamyl methylphosphonate, taking into account the variation of activity coefficients of components in the organic phase when its composition is varied with... | eng_Latn | 49,677 |
Two-step process for aromatics production from natural gas/shale gas condensates | The aromatics production system is useful for producing an aromatics-rich system product from a liquid hydrocarbon condensate includes a hydroprocessing reactor, an aromatization reactor system and a hydrogen extraction unit. The method for producing the aromatics-rich system product from the wide boiling range condens... | Abstract We study the dynamics of a wrinkled flame held downstream of a cold, isothermal, flat burner The analysis is conducted in the framework of a thermal diffusional flame model. An Arrhenius rate with a large activation temperature and a single reactant with Lewis number unity are postulated We show that the nonli... | eng_Latn | 49,696 |
Evidence for phase separation of ethanol-water mixtures at the hydrogen terminated nanocrystalline diamond surface | Interactions between ethanol-water mixtures and a hydrophobic hydrogen terminated nanocrystalline diamond surface, are investigated by sessile drop contact angle measurements. The surface free energy of the hydrophobic surface, obtained with pure liquids, differs strongly from values obtained by ethanol-water mixtures.... | Abstract Bubbles of inviscid fluid surrounded by a viscous fluid in a Hele–Shaw cell can merge and break off. During the process of break-off, a thinning neck pinches off to a universal self-similar singularity. We describe this process and reveal its integrable structure: it is a solution of the dispersionless limit o... | eng_Latn | 49,701 |
H2 formation from Polycyclic Aromatic Hydrocarbon molecules | In this work we study statistical fragmentation of Polycyclic Aromatic Hydrocarbon (PAH) molecules following collisions with keV ions. Dissociation and transition state energies for H- and H2-emissions from PAHs have been calculated and a simple electronic stopping model has been used to calculate collision-induced int... | Polymerisation en solution de diacides carboxylique en presence de phosgene a temperature ambiante | eng_Latn | 49,708 |
Phase equilibrium in low-density polyethylene — Normal alkanes systems | The crystalline equilibrium diagrams were obtained for eigh LDPE—n-alkane systems with the cloud point method. A point of view was formulated in which there is a major difference between crystal separation in lowmolecular-weight systems and systems containing flexible macromolecules, and it derives from differences in ... | This book, which was first published in Russian in 2005, deals with the homogenization of partial differential equations (pdes) of elliptic and parabolic types. The authors study both boundary value problems posed in highly perforated domains or equations with rapidly oscillating coefficients. The standard theory of ho... | eng_Latn | 49,712 |
Many scientific techniques exploit NMR phenomena to study molecular physics , crystals , and non-crystalline materials through NMR spectroscopy . | Many scientific techniques exploit the NMR phenomena to study molecular physics , crystals and non crystalline materials through NMR spectroscopy . | The report recommendations include : greater data collection of air and water data , `` rigorous '' air pollution standards and mandatory disclosure of chemicals used in the hydraulic fracturing process . | eng_Latn | 49,731 |
Effects of Translational Nonequilibrium in the Shock Wave Front in Dense Gases and Liquids | On the basis of the generalized Enskog kinetic equation, the problem of the structure of a shock wave in dense reacting gases and liquids is solved. It is shown that the physicochemical processes in the zone of translational nonequilibrium (ZTN) in the shock wave front do not obey the Arrhenius kinetics. The rates of h... | We study in this paper the properties of a two-body random matrix ensemble for distinguishable spins. We require the ensemble to be invariant under the group of local transformations and analyze a parametrization in terms of the group parameters and the remaining parameters associated with the 'entangling' part of the ... | eng_Latn | 49,744 |
what is a solvent solute and solution | A solvent is a substance which dissolves a solute. When a solvent dissolves into a solute, it creates a solution. If i pour salt into a cup of water. The salt is the solute because it's being dissolved and the water is the solvent because it is doing the dissolving. | home / study / science / chemistry / chemistry questions and answers / What Is The Strongest Type Of Intermolecular Force Between Solute And Solvent In Each Solution? ... Question: What is the strongest type of intermolecular force between solute and solvent in each solution? ... Show transcribed image text What is the... | eng_Latn | 49,782 |
Broken rotor bar fault diagnosis using fast Fourier transform applied to field-oriented control induction machine: simulation and experimental study | DWT for rotor bars fault detection applied to backstepping control induction motor drive in low-speed | Transcriptional activation of HIF-1 by a ROS-ERK axis underlies the resistance to photodynamic therapy | eng_Latn | 50,238 |
The torque monitoring of high-speed rotary shaft is often unsuccessful because of sensor installation, reliability, accuracy and other practical issues, so high-speed rotary shaft torque monitoring has become an urgent need. The brushless torque sensor is developed based on strain measurement, which transformed the tor... | Since the torque sensor is applied widely,it is necessary to study it.After analyzing the theory of typical elastic elements,the enforcing method for 5 forms of strain torque sensor are presented,in which strain,torsional deformation and natural frequency of torsional vibration is analyzed in theory and relative mechan... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 50,248 |
Aimed at the intelligent car adopts speed closed-loop control strategy,precise value of car speed is required,the thesis designs speed measurement sensors and signal processing circuits.By studying different digital speed measurement algorithms,high theoretical speed measurement precision can be obtained with M/T metho... | In developing a tiny crawler-type cultivator, the chassis speed needs to be accurately obtained in order to meet the requirements of precision agriculture for straight walking. This paper focuses on solving the problem of chassis speed measurement. Firstly, the principle of speed measuring device and the special M/T me... | In developing a tiny crawler-type cultivator, the chassis speed needs to be accurately obtained in order to meet the requirements of precision agriculture for straight walking. This paper focuses on solving the problem of chassis speed measurement. Firstly, the principle of speed measuring device and the special M/T me... | eng_Latn | 50,260 |
It is shown that B.C. Moore's balancing model (1981) can be extended to unstable systems by utilizing two weighted Grammian matrices. It is proposed that the J omega axis can be shifted to handle unstable systems. The balanced approach involves the solution of two modified Lyapunov equations. Two numerical examples are... | This project is directed at the third generation of heart pumps being developed in commercial research laboratories which employ feedback-controlled magnetically levitated pump impellers. Unique features of the control problem are the quasi-periodic pressure disturbances of the natural heart and nonlinearities of the m... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 50,263 |
Ultrasonic quality control of press-fit joints | A technique for quantitatively evaluating the quality of interference-fit joints by the echopulse method is proposed. A formula is obtained for calculating the value of the coefficient of ultrasound reflection from the site of the joint fit from the measured amplitudes of echo pulses in a free ring and in an assembled ... | This paper discusses the conception of virtual instrument and the application of data collecting system with USB in the hydraulic measurement system, analyzes the basic features of USB and NI Compact-DAQ, and idiographic realizing methods for building the hydraulic test system. Through the test, the each technical spec... | eng_Latn | 50,279 |
A Parametric Study on Admittance Signatures of a PZT Transducer Under Free Vibration | Piezoelectric material is proven to be a versatile collocated sensor and actuator. Its specific application includes electromechanical impedance (EMI)-based structural health monitoring (SHM). To date, several EMI models are available in the literature but parametric studies are scarcely available. This study aims at p... | Abstract The problem of diagnosing a fault or a perturbation in a dynamical system (be it industrial or natural) can be restated as the characterization of the transfer function of a filter that acts on a “sane” or “unperturbed” system to transform it into a “faulted” or “perturbed” one. This filter would then be appro... | eng_Latn | 50,284 |
Shock Source Assessment of a Separation Nut | The shock output of a pyrotechnic separation nut is presented and the events contributing to the overall shock output are identified. Events are separated into ignition, internal impacts, and thread segment bolt release. The events are isolated and the resulting shock response spectrums are compared against the overall... | This paper describes the application of a parameter optimizing technique to determine numerical values for a circuit model of a squirrel-cage induction machine. The model includes the effects of magnetic saturation of the main and leakage flux paths and skin effect in the rotor bars. All parameters have been measured a... | kor_Hang | 50,304 |
The Pulsating Stroke Box Structure Improvements of SSS-Type Vertical Ring and High Gradient Magnetic Separator | This paper describes the pulsating stroke box’s role in the process of magnetic separation,and its some improvements on structure in order to optimize performance and enhance its service life: the support structure of reciprocating shaft,the sealing of reciprocating shaft’s stretched side and the stroke adjustment.The ... | The author discusses the stability of the slip power recovery generator (SPRG), in open loop and in closed loop, for applications like the exploitation of ocean wave energy by water column devices. The stability study was performed using small displacement models for each of the following situations: SPRG in open loop,... | eng_Latn | 50,308 |
Study Various Defects of Ball Bearings through Different Vibration Techniques | The main objective of this study is to evaluate ball bearing defects under different operation conditions through vibration measurements. There are several tests conducted for healthy and defective bearing under variable speeds and load conditions. Experimental tests are conducted for six sets of ball bearings. Initial... | Harvey J. Finison (Equipment Laboratory, Wright Field, Dayton, Ohio): One of the greatest problems in brush wear testing has been the selection of test conditions representative of service conditions. Selection of test conditions considerably more severe than actual operating conditions may result in elimination of bru... | eng_Latn | 50,332 |
Influence of Motorcycle Noise on Gear Transmission | The study of motorcycle's acoustic signal shows that gears noise take a great proportion on the whole acoustic of motorcycle.So how to control the noiseof gears is very helpful for reducing the whole motor's acoustic.This paper discusses the engine matching with transmission system in reason,primary transmission and ge... | This paper describes a measurement technique suitable for characterizing nonlinear microwave devices operating under multi-frequency excitation. A dual six-port network analyzer configured for simultaneous load-pull and source-pull measurement allows the characterization of nonlinear devices under multi-tone excitation... | eng_Latn | 50,336 |
Mechanical Aspects Of The Servo Mount Telescope | A tracking telescope designed, built and tested by Perkin-Elmer contains several unique mechanical design solutions that may be applied to other types of equipment with similar design requirements. Three design areas that required special approaches include an azimuth overtravel stop mechanism permitting +190 degrees o... | OBJECTIVE. The purpose of this study is to evaluate the diagnostic value of in vivo MR spectroscopy (MRS) with semilocalization by adiabatic selective refocusing (semi-LASER MRS) in differentiating... | kor_Hang | 50,340 |
Method for measuring frequency response function of vibrating structure in large noise environment | The invention relates to a method for measuring frequency response function of a vibration structure in loud-noise environment, comprising the following steps: a linear swept-frequency signal is adopted as an excitation signal and acceleration response signals of the structure vibration is filtered in a fractional orde... | The purpose of this note is to document some work done as part of the effort directed at designing and simulating a bunch-by-bunch feedback system to control longitudinal coupled bunch instabilities in the B-factory. In particular, I discuss the ring model used in the simulation program developed to study this feedback... | eng_Latn | 50,379 |
Airgap-less electric motor: A solution for high-torque low-speed applications | Internal Permanent Magnet Motor Design for Electric Vehicle Drive | motor imagery in mental rotation : an fmri study . | eng_Latn | 50,388 |
Analytic power factor calculation for vernier machines with concentrated windings | Generic torque-maximizing design methodology of surface permanent-magnet vernier machine | A comparative study of semi-naive Bayes methods in classification learning | eng_Latn | 50,393 |
Thinking and practice on school-running orientation of the Newly-established universities-A case study of North China Institute of Science and Technology | The Newly-established universities should be advancing with everlasting innovation by accurate orientation on the basis of their own actual situation.As the only university affiliated to the State Administration of Work Safety,North China Institute of Science and Technology is continuously exploring the development pla... | In order to study the unit's movement law,a transient dynamic response model of large hydroelectric machines is established.The model couples the whole unit such as main shaft,generator rotor,turbine runner and various bearing supporting,and involves consistent quality of the unit shaft,gyroscopic inertia and angular i... | eng_Latn | 50,440 |
Wind turbines Fault Detection and identification using Set-Valued Observers | Research on wind turbine Operations & Maintenance (O&M) procedures is critical to the expansion of Wind Energy Conversion systems (WEC). In order to reduce O&M costs and increase the lifespan of the turbine, we study the application of Set-Valued Observers (SVO) to the problem of Fault Detection and Isolation (FDI) of ... | an unmodified (perfect involute) gear pair was compared with that of gears with various profile modifications. relations were found between various profile rnodificatlons and the resulting dynamic loads. the gear's static transmission error, gave a very good estimation of gear dynamic loading. Cor- An effective error, ... | eng_Latn | 50,445 |
MANUFACTURING METHODS FOR CONICAL GAS BEARINGS. | Abstract : The development of methods of manufacture of conical gas bearing surfaces on a cylindrical grinding machine is described. The work is principally directed towards reducing the cost of gas bearings for precision gyroscopes, but has application to bearings for other purposes. The results of some early manufact... | The study of motorcycle's acoustic signal shows that gears noise take a great proportion on the whole acoustic of motorcycle.So how to control the noiseof gears is very helpful for reducing the whole motor's acoustic.This paper discusses the engine matching with transmission system in reason,primary transmission and ge... | yue_Hant | 50,450 |
HDS does not study the NHH-to-NHH sector of the mailstream. | HDS does not study every part of the mailstream. | HDS studies the NHH-to-NHH sector. | eng_Latn | 50,500 |
High Quality Media Streaming over Longdistance Network Using FELIX Experimental Facility | This demo paper presents the FELIX project [1] approach of implementation the "High Quality Media Transmission over long-distance networks" use case. A virtual slice built on demand over European and Japan infrastructure allows to perform the experiments and shows capabilities of the test-bed and its availability for h... | A conceptual design study titled Deep-space Optical Terminals was recently completed for an optical communication ::: technology demonstration from Mars in the 2018 time frame. We report on engineering trades for the entire system, ::: and for individual subsystems including the flight terminal, the ground receiver and... | eng_Latn | 50,536 |
Raspberry PI Based OFFLINE MEDIA SERVER | In this research paper, an economically low computing environment using Raspberry Pi zero W model based systems is very Well organized to use computing system in the developing environment. All this work will be done on Linux OS platform and it will help to develop the server using the Raspberry pi. A partition will be... | A conceptual design study titled Deep-space Optical Terminals was recently completed for an optical communication ::: technology demonstration from Mars in the 2018 time frame. We report on engineering trades for the entire system, ::: and for individual subsystems including the flight terminal, the ground receiver and... | kor_Hang | 50,567 |
Number of information and its relation to the cosmological constant resulting from Landauer’s principle | Using a recent published formula for the number of information N that results from Landauer’s principle we obtain an expression for the cosmological constant Λ. Next, assuming the universe as a system of mass M satisfying Landauer’s principle and eliminating its mass M from the given expression for the number of inform... | In this paper, we study the connection and secrecy performance under two-tier cellular network during uplink phase, where both large-scale factor (path propagation loss) and small-scale factor (Nakagami fading) are considered., which are beyond the scope of the existing works. Analytical expressions of network connecti... | eng_Latn | 50,569 |
what is the digital divide | The Digital Divide, ICT, and Broadband Internet ICT - Information Communications Technologies. The Digital Divide, or the digital split, is a social issue referring to the differing amount of information between those who have access to the Internet (specially broadband access) and those who do not have access. | Most of the reports about the digital divide center around racial and socio-economic differences (a 2010 study confirmed that household income is the greatest predictor of Internet use). However, for those families in rural areas, access is still the number one issue. | eng_Latn | 50,814 |
In this work the degradation of transformer mineral oil in oil-immersed ZnO-based surge arresters has been studied. Three different kinds of ZnO varistors: 1-non-coated, 2-resin-coated and 3-glass-coated, have been used in this study. It can be seen that after long-period high thermal constraints in oil there is a depo... | In this paper the AC ageing of ZnO-based varistors in transformer oil is studied by an accelerated ageing during 6000 hours. Three kinds of varistors have been studied: 1-non-coated, 2-coated by resin and 3-coated by glass . As well the thermal behaviour of varistors has been studied at different temperatures and volta... | Protection equipment based on metal oxide varistors is the most common solution today in the field of low voltage surge arrester applications. All ZnO based varistors are power electronic devices made of n-type semiconductor polycrystalline ceramics, having a high degree of non-linearity of current-voltage dependence. ... | eng_Latn | 50,940 |
High Physical Parameters Adjustment of the npp+ Solar Cell Structure using PC1D | In this paper, we present a study on the behavior of a polycrystalline silicon cell, specifically the NPP+ structure. The simulation of this structure is done using the PC1D software; this latter allows simulating different structures of photovoltaic cells. The general purpose of the present work is focused on the stud... | Abstract In this paper, we analyze photometry of V504 Cyg semi-detached binary system. For this purpose, after taking the photometric data, primary and secondary minimum and new epoch were calculated. The period of system is found to be 0.3516916 day. Analysis of light curve was performed by PHOEBE software which uses ... | eng_Latn | 50,975 |
Influence of defects on solar cell parameters - an experimental study | The influence of defects on solar cell parameters has been determined by fabricating and evaluating small area cells. Arrays of small area (50 mil diameter) solar cells were fabricated on polished polycrystalline silicon substrates. Their I-V characteristics (dark and illuminated), spectral responses and minority carri... | This paper discusses the factors which could affect the surface quality of zinc strip,such as technology,equipment,environment and operation in production process.Some suggestions to improve the surface quality of zinc strip were given. | eng_Latn | 50,976 |
Space and time analysis of irradiation variation across the UK: A 10 year study of solar farm yield | This research offers an understanding of year-to-year and area-to-area variability of PV performance, measured in terms of specific yield (kWh/KWp). This information will assist in grid management. | In the paper, we establish an improvement of Minkowski inequality for sums. Its reverse version is also given.). | eng_Latn | 50,986 |
Design and development of a simple solar dehydrator for crop drying | Abstract In this paper, a simple solar collector cum crop drying system is described. The categorical objectives of this paper are (1) to identify a suitable medium capacity solar drying system and (2) to study analytically and experimentally the performance characteristics of this newly fabricated solar drying system.... | This patent relates to the integration of a light display screen with one or more blades of the windmill (LCD, LED, drop banner, ...) (Figure 1) and (Figures 1, 2, 3) , to change the remote display using a remote control and / or computer. | eng_Latn | 50,996 |
Alq3 (tris(8-hydroxyquinolinato)aluminium) as a selective n-type contact for FAMAPIBr perovskite solar cells with efficient energy transfer to increase the solar cell photocurrent | We investigated the use of tris(8-hydroxyquinolinato)aluminium, known as Alq3, as a selective contact for electrons in functional FAMAPIBr (formamidinium/methylammonium lead iodide bromide) solar cells. The solar cells with Alq3 interfacial layers show excellent photocurrent upon standard 1 sun illumination (100 mW cm−... | The design of the LTE physical layer (PHY) is heavily influenced by the requirements for high peak transmission rate (100 Mbps DL/50 Mbps UL), spectral efficiency and multiple channel bandwidths (1.25–20 MHz). Unfortunately, the existing WCDMA turbo interleaver does not permit an efficient high throughput implementatio... | eng_Latn | 51,029 |
Study of physical models of a monolayer of a fiber composite by the eddy-current method | An experimental study is made of physical models of a monolayer of a composite consisting of unidirectional strands of conducting carbon fibers separated by layers of a nonconducting binder. In the models, the strands of carbon fibers are replaced by copper conductors of the corresponding diameter which are covered by ... | This paper shows that an enhancement in the performance of commercial screen-printed multi-crystalline silicon photovoltaic modules can be achieved via luminescent down-shifting of the incident light. Using fluorescent organic dyes dissolved in the pre-existing poly-ethylene vinyl acetate (EVA) encapsulation layer, an ... | eng_Latn | 51,039 |
Empirical battery model characterizing a utility-scale carbon-enhanced VRLA battery | In this paper, the electrical characteristics of a carbon enhanced valve-regulated lead-acid (VRLA) battery from East Penn Manufacturing are investigated and a dynamic model is developed for use in electrical simulations. The electrochemical processes that cause specific dynamic behaviors have been investigated. These ... | In this paper, we present a study on the behavior of a polycrystalline silicon cell, specifically the NPP+ structure. The simulation of this structure is done using the PC1D software; this latter allows simulating different structures of photovoltaic cells. The general purpose of the present work is focused on the stud... | eng_Latn | 51,045 |
design and control of smart dc microgrid for integration of renewable energy sources . | Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays | Mental health professionals’ attitudes towards mental illness: professional and cultural factors in the INTER NOS study | eng_Latn | 51,054 |
Buck converter MPPT control of a photovoltaic system | Modeling and Simulation of Photovoltaic module using MATLAB/Simulink | A comparative study of vein pattern recognition for biometrie authentication | eng_Latn | 51,068 |
A Modified P&O-MPPT based on Pythagorean Theorem and CV-MPPT for PV Systems | Energy comparison of MPPT techniques for PV Systems | international computer and information literacy study assessment framework . | eng_Latn | 51,087 |
Simulation and Hardware Implementation of Incremental Conductance MPPT With Direct Control Method Using Cuk Converter | Regulation of Photovoltaic Voltage | 6LoWPAN: a study on QoS security threats and countermeasures using intrusion detection system approach | eng_Latn | 51,121 |
Energetic disorder induced leakage current in organic bulk heterojunction solar cells: comprehending the ultra-high open circuit voltage loss at low temperatures | Organic bulk heterojunction solar cells suffer from a huge, nonmonotonic loss of open-circuit voltage ${V}_{o\phantom{\rule{0}{0ex}}c}$ at low temperatures, which thwarts their practical application. The authors incorporate energetic disorder into a drift-diffusion model to study the ${V}_{o\phantom{\rule{0}{0ex}}c}-T$... | Different systems act as one of the most promising forms of integration in the urban planning structure. In the process of formation of plans for social and economic development of major cities more often, there is a situation, when the improvement of resources efficiency needs not just a concentration of effort, but a... | eng_Latn | 51,158 |
what is pvsyst software | PVsyst is a program designed for the study, sizing and data analysis of complete PV systems.It deals with grid-connected, stand-alone, pumping and DC-grid (public transportation) PV systems, and includes extensive meteo and PV systems components databases, as well as general solar energy tools. All comments (0).Vsyst a... | Peer-to-peer file-sharing clients are a dime a dozen these days, and many of these applications are quite similar to one another. Pvsyst 6 Activation Code Generator is one more entry into this category of software, and although it works, thereâs nothing about it that particularly distinguishes it from the competition... | eng_Latn | 51,265 |
The paper describes an analysis of rain gauge data to determine an appropriate radius of influence to use for the objective analysis of rainfall over Indian monsoon region. The correlation co-efficient (CC) of rainfall between rain gauges in discrete distance intervals is computed, and the distance at which CC falls to... | A cumulative semivariogram (CSV) method is proposed as an optimum analysis technique for producing gridded fields of meteorological regional variables that are sampled at irregular sites as sparse data. After having discussed the basis of the CSV and its theoretical representations by functional models, the procedure o... | Microwave devices with the Rollet parameter (k) less than one can always be made stable by resistive loading. In cases where noise figure or output power is at a premium, the performance of an amplifier can often be enhanced by using a design where k is less than unity thereby avoiding resistive loading. While a simult... | eng_Latn | 51,312 |
To improve the study on the development of forest fires,the forest fire spreading model was established through the experiments and observation data.Based on the MODIS data,this study obtained data sequence from the enhanced image with fusion technology,then established the spreading and predicting model of forest fire... | To improve the precision of gray modeling in forest fire and solve the problem of small date modeling, ER algorithm is proposed. Based on the senior introduced the robust estimation to gray modeling, this method interpolate the modeling date again. The method can achieve small date (3 dates) modeling. This research com... | This publication contains reprint articles for which IEEE does not hold copyright. Full text is not available on IEEE Xplore for these articles. | eng_Latn | 51,335 |
Statistical inference for alpha-series process with truncated normal distribution | In this paper we consider an alpha-series process when the distribution of the first occurrence time of an event is assumed to be truncated normal distribution. Firstly, we study several nonparametric inferences including the Least-square estimate (LSE) and the Maximum-likelihood estimate (ML). Some estimators of the p... | ABSTRACTWe utilize the Internet search data from Google Trends to provide short-term forecasts for the inflow of Japanese tourists to South Korea. We construct the Google variable in a systematic way by combining keywords to minimize mean squared or mean absolute forecasting errors. We augment the Google variable to th... | eng_Latn | 51,407 |
DOA estimation for uncorrelated and coherent signals based on Fourth-order Cumulants | This work aims to estimate the Direction-of-arrival (DOA) of uncorrelated and coherent signals based on Fourth-order Cumulant (FOC) and sparse reconstruction method. Firstly, a subspace method based on FOC matrix is proposed for estimating the DOAs of the uncorrelated signalsthen combining the FOC matrix of the coheren... | Leveraging grid computing technology, i.e. the visualization of distributed computing and data resources such as processing, network bandwidth and storage capacity to create a single system image, we present a Grid Air Quality Forecast System (G-AQFS). The modeling system consists of meteorological and dispersion model... | eng_Latn | 51,411 |
Analysis and Forecast of October Rainstorm in Guilin | Statistic is made regarding the October rainstorm process in Guilin during the 42 years from 1960 to 2002 by utilizing the historical synoptic chart information with a view to study the circulation characteristics of its influencing weather system and its evolution law, based on which the forecast mode indices are esta... | The paper sets up a model for forcasting population analgsis,grey system theory and statistics of Benxi population~ between 1990 and 1999.The use of this model proves that the result gained with the methods presented in the paper is nearly in agreement with the fact. | eng_Latn | 51,417 |
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