**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**8670

# Search results for: The linear quantum hydrodynamic model

##### 8670 The Magnetized Quantum Breathing in Cylindrical Dusty Plasma

**Authors:**
A. Abdikian

**Abstract:**

**Keywords:**
The linear quantum hydrodynamic model,
the magnetized quantum breathing mode,
the quantum dispersion relation of rotation mode,
void structure.

##### 8669 Nonplanar Ion-acoustic Waves in a Relativistically Degenerate Quantum Plasma

**Authors:**
Swarniv Chandra,
Sibarjun Das,
Agniv Chandra,
Basudev Ghosh,
Apratim Jash

**Abstract:**

**Keywords:**
Kadomtsev-Petviashvili equation,
Ion-acoustic
Waves,
Relativistic Degeneracy,
Quantum Plasma,
Quantum
Hydrodynamic Model.

##### 8668 Propagation of Nonlinear Surface Waves in Relativistically Degenerate Quantum Plasma Half-Space

**Authors:**
Swarniv Chandra,
Parthasona Maji,
Basudev Ghosh

**Abstract:**

The nonlinear self-interaction of an electrostatic surface wave on a semibounded quantum plasma with relativistic degeneracy is investigated by using quantum hydrodynamic (QHD) model and the Poisson’s equation with appropriate boundary conditions. It is shown that a part of the second harmonic generated through self-interaction does not have a true surface wave character but propagates obliquely away from the plasma-vacuum interface into the bulk of plasma.

**Keywords:**
Harmonic Generation,
Quantum Plasma,
Quantum Hydrodynamic Model,
Relativistic Degeneracy,
Surface waves.

##### 8667 Modulational Instability of Electron Plasma Waves in Finite Temperature Quantum Plasma

**Authors:**
Swarniv Chandra,
Basudev Ghosh

**Abstract:**

Using the quantum hydrodynamic (QHD) model for quantum plasma at finite temperature the modulational instability of electron plasma waves is investigated by deriving a nonlinear Schrodinger equation. It was found that the electron degeneracy parameter significantly affects the linear and nonlinear properties of electron plasma waves in quantum plasma.

**Keywords:**
Amplitude Modulation,
Electron Plasma Waves,
Finite Temperature Model,
Modulational Instability,
Quantum
Plasma.

##### 8666 Nonlinear Mathematical Model of the Rotor Motion in a Thin Hydrodynamic Gap

**Authors:**
Jaroslav Krutil,
František Pochylý,
Simona Fialová

**Abstract:**

**Keywords:**
CFD modeling,
hydrodynamic gap,
matrices of
mass,
stiffness and damping,
nonlinear mathematical model.

##### 8665 Comprehensive Study on the Linear Hydrodynamic Analysis of a Truss Spar in Random Waves

**Authors:**
Roozbeh Mansouri,
Hassan Hadidi

**Abstract:**

Truss spars are used for oil exploitation in deep and ultra-deep water if storage crude oil is not needed. The linear hydrodynamic analysis of truss spar in random sea wave load is necessary for determining the behaviour of truss spar. This understanding is not only important for design of the mooring lines, but also for optimising the truss spar design. In this paper linear hydrodynamic analysis of truss spar is carried out in frequency domain. The hydrodynamic forces are calculated using the modified Morison equation and diffraction theory. Added mass and drag coefficients of truss section computed by transmission matrix and normal acceleration and velocity component acting on each element and for hull section computed by strip theory. The stiffness properties of the truss spar can be separated into two components; hydrostatic stiffness and mooring line stiffness. Then, platform response amplitudes obtained by solved the equation of motion. This equation is non-linear due to viscous damping term therefore linearised by iteration method [1]. Finally computed RAOs and significant response amplitude and results are compared with experimental data.

**Keywords:**
Truss Spar,
Hydrodynamic analysis,
Wave
spectrum,
Frequency Domain

##### 8664 The Effects of a Thin Liquid Layer on the Hydrodynamic Machine Rotor

**Authors:**
Jaroslav Krutil,
František Pochylý,
Simona Fialová,
Vladimír Habán

**Abstract:**

**Keywords:**
Computational modeling,
mathematical model,
hydrodynamic gap,
matrices of mass,
stiffness and damping.

##### 8663 Implication of the Exchange-Correlation on Electromagnetic Wave Propagation in Single-Wall Carbon Nanotubes

**Authors:**
A. Abdikian

**Abstract:**

Using the linearized quantum hydrodynamic model (QHD) and by considering the role of quantum parameter (Bohm’s potential) and electron exchange-correlation potential in conjunction with Maxwell’s equations, electromagnetic wave propagation in a single-walled carbon nanotubes was studied. The electronic excitations are described. By solving the mentioned equations with appropriate boundary conditions and by assuming the low-frequency electromagnetic waves, two general expressions of dispersion relations are derived for the transverse magnetic (TM) and transverse electric (TE) modes, respectively. The dispersion relations are analyzed numerically and it was found that the dependency of dispersion curves with the exchange-correlation effects (which have been ignored in previous works) in the low frequency would be limited. Moreover, it has been realized that asymptotic behaviors of the TE and TM modes are similar in single wall carbon nanotubes (SWCNTs). The results show that by adding the function of electron exchange-correlation potential lead to the phenomena and make to extend the validity range of QHD model. The results can be important in the study of collective phenomena in nanostructures.

**Keywords:**
Transverse magnetic,
transverse electric,
quantum hydrodynamic model,
electron exchange-correlation potential,
single-wall carbon nanotubes.

##### 8662 Instability of Electron Plasma Waves in an Electron-Hole Bounded Quantum Dusty Plasma

**Authors:**
Basudev Ghosh,
Sailendranath Paul,
Sreyasi Banerjee

**Abstract:**

Using quantum hydrodynamical (QHD) model the linear dispersion relation for the electron plasma waves propagating in a cylindrical waveguide filled with a dense plasma containing streaming electron, hole and stationary charged dust particles has been derived. It is shown that the effect of finite boundary and stream velocity of electrons and holes make some of the possible modes of propagation linearly unstable. The growth rate of this instability is shown to depend significantly on different plasma parameters.

**Keywords:**
Electron Plasma wave,
Quantum plasma,
Quantum Hydrodynamical model.

##### 8661 A Quantum Algorithm of Constructing Image Histogram

**Authors:**
Yi Zhang,
Kai Lu,
Ying-hui Gao,
Mo Wang

**Abstract:**

**Keywords:**
Quantum Image Representation,
Quantum
Algorithm,
Image Histogram.

##### 8660 Nonlinear Solitary Structures of Electron Plasma Waves in a Finite Temperature Quantum Plasma

**Authors:**
Swarniv Chandra,
Basudev Ghosh

**Abstract:**

**Keywords:**
Electron Plasma Waves,
Finite Temperature Model,
Modulational Instability,
Quantum Plasma,
Solitary structure

##### 8659 A Comparison of the Sum of Squares in Linear and Partial Linear Regression Models

**Authors:**
Dursun Aydın

**Abstract:**

**Keywords:**
Partial Linear Regression Model,
Linear RegressionModel,
Residuals,
Deviance,
Smoothing Spline.

##### 8658 Propagation of Electron-Acoustic Solitary Waves in Weakly Relativistically Degenerate Fermi Plasma

**Authors:**
Swarniv Chandra,
Basudev Ghosh,
S. N. Paul

**Abstract:**

**Keywords:**
Relativistic Degeneracy,
Electron-Acoustic Waves,
Quantum Plasma,
KdV Equation.

##### 8657 A Nonlinear ODE System for the Unsteady Hydrodynamic Force – A New Approach

**Authors:**
Osama A. Marzouk

**Abstract:**

**Keywords:**
reduced-order model,
wake oscillator,
nonlinear,
ODEsystem

##### 8656 Development of Admire Longitudinal Quasi-Linear Model by using State Transformation Approach

**Authors:**
Jianqiao. Yu,
Jianbo. Wang,
Xinzhen. He

**Abstract:**

This paper presents a longitudinal quasi-linear model for the ADMIRE model. The ADMIRE model is a nonlinear model of aircraft flying in the condition of high angle of attack. So it can-t be considered to be a linear system approximately. In this paper, for getting the longitudinal quasi-linear model of the ADMIRE, a state transformation based on differentiable functions of the nonscheduling states and control inputs is performed, with the goal of removing any nonlinear terms not dependent on the scheduling parameter. Since it needn-t linear approximation and can obtain the exact transformations of the nonlinear states, the above-mentioned approach is thought to be appropriate to establish the mathematical model of ADMIRE. To verify this conclusion, simulation experiments are done. And the result shows that this quasi-linear model is accurate enough.

**Keywords:**
quasi-linear model,
simulation,
state transformation approach,
the ADMIRE model.

##### 8655 A Computer Model of Quantum Field Theory

**Authors:**
Hans H. Diel

**Abstract:**

This paper describes a computer model of Quantum Field Theory (QFT), referred to in this paper as QTModel. After specifying the initial configuration for a QFT process (e.g. scattering) the model generates the possible applicable processes in terms of Feynman diagrams, the equations for the scattering matrix, and evaluates probability amplitudes for the scattering matrix and cross sections. The computations of probability amplitudes are performed numerically. The equations generated by QTModel are provided for demonstration purposes only. They are not directly used as the base for the computations of probability amplitudes. The computer model supports two modes for the computation of the probability amplitudes: (1) computation according to standard QFT, and (2) computation according to a proposed functional interpretation of quantum theory.

**Keywords:**
Computational Modeling,
Simulation of Quantum Theory,
Quantum Field Theory,
Quantum Electrodynamics

##### 8654 Entanglement-based Quantum Computing by Diagrams of States

**Authors:**
Sara Felloni,
Giuliano Strini

**Abstract:**

**Keywords:**
Diagrams of states,
entanglement,
quantum circuits,
quantum information.

##### 8653 Implementation of Quantum Rotation Gates Using Controlled Non-Adiabatic Evolutions

**Authors:**
Abdelrahman A. H. Abdelrahim,
Gharib Subhi Mahmoud,
Sherzod Turaev,
Azeddine Messikh

**Abstract:**

**Keywords:**
Adiabatic evolutions,
non adiabatic evolutions,
controlled adiabatic evolutions,
quantum rotation gates,
dephasing
rates,
master equation.

##### 8652 Transient Hydrodynamic and Thermal Behaviors of Fluid Flow in a Vertical Porous Microchannel under the Effect of Hyperbolic Heat Conduction Model

**Authors:**
A. F. Khadrawi

**Abstract:**

**Keywords:**
free convection,
hyperbolic heat conduction,
macroscopic heat conduction models in microchannel,
porous media,
vertical microchannel,
microchannel thermal,
hydrodynamic behavior.

##### 8651 Dynamics of Nutrients Pool in the Baltic Sea Using the Ecosystem Model 3D-CEMBS

**Authors:**
L. Dzierzbicka-Głowacka,
M. Janecki

**Abstract:**

Seasonal variability of nutrients concentration in the Baltic Sea using the 3D ecosystem numerical model 3D-CEMBS has been investigated. Additionally this study shows horizontal and vertical distribution of nutrients in the Baltic Sea. Model domain is an extended Baltic Sea area divided into 600x640 horizontal grid cells. Aside from standard hydrodynamic parameters 3D-CEMBS produces modeled ecological variables such as: three types of phytoplankton, two detrital classes, dissolved oxygen and the nutrients (nitrate, ammonium, phosphate and silicate). The presented model allows prediction of parameters that describe distribution of nutrients concentration and phytoplankton biomass. 3D-CEMBS can be used to study the effect of different hydrodynamic and biogeochemical processes on distributions of these variables in a larger scale.

**Keywords:**
ecosystem model,
nutrients,
Baltic Sea

##### 8650 A Programmer’s Survey of the Quantum Computing Paradigm

**Authors:**
Philippe Jorrand

**Abstract:**

Research in quantum computation is looking for the consequences of having information encoding, processing and communication exploit the laws of quantum physics, i.e. the laws which govern the ultimate knowledge that we have, today, of the foreign world of elementary particles, as described by quantum mechanics. This paper starts with a short survey of the principles which underlie quantum computing, and of some of the major breakthroughs brought by the first ten to fifteen years of research in this domain; quantum algorithms and quantum teleportation are very biefly presented. The next sections are devoted to one among the many directions of current research in the quantum computation paradigm, namely quantum programming languages and their semantics. A few other hot topics and open problems in quantum information processing and communication are mentionned in few words in the concluding remarks, the most difficult of them being the physical implementation of a quantum computer. The interested reader will find a list of useful references at the end of the paper.

**Keywords:**
Quantum information processing,
quantum algorithms,
quantum programming languages.

##### 8649 Validity Domains of Beams Behavioural Models: Efficiency and Reduction with Artificial Neural Networks

**Authors:**
Keny Ordaz-Hernandez,
Xavier Fischer,
Fouad Bennis

**Abstract:**

In a particular case of behavioural model reduction by ANNs, a validity domain shortening has been found. In mechanics, as in other domains, the notion of validity domain allows the engineer to choose a valid model for a particular analysis or simulation. In the study of mechanical behaviour for a cantilever beam (using linear and non-linear models), Multi-Layer Perceptron (MLP) Backpropagation (BP) networks have been applied as model reduction technique. This reduced model is constructed to be more efficient than the non-reduced model. Within a less extended domain, the ANN reduced model estimates correctly the non-linear response, with a lower computational cost. It has been found that the neural network model is not able to approximate the linear behaviour while it does approximate the non-linear behaviour very well. The details of the case are provided with an example of the cantilever beam behaviour modelling.

**Keywords:**
artificial neural network,
validity domain,
cantileverbeam,
non-linear behaviour,
model reduction.

##### 8648 The Relative Efficiency of Parameter Estimation in Linear Weighted Regression

**Authors:**
Baoguang Tian,
Nan Chen

**Abstract:**

A new relative efficiency in linear model in reference is instructed into the linear weighted regression, and its upper and lower bound are proposed. In the linear weighted regression model, for the best linear unbiased estimation of mean matrix respect to the least-squares estimation, two new relative efficiencies are given, and their upper and lower bounds are also studied.

**Keywords:**
Linear weighted regression,
Relative efficiency,
Mean matrix,
Trace.

##### 8647 CdS Quantum Dots as Fluorescent Probes for Detection of Naphthalene

**Authors:**
Zhengyu Yan,
Yan Yu,
Jianqiu Chen

**Abstract:**

**Keywords:**
CdS quantum dots,
modification,
detection,
naphthalene.

##### 8646 Boosting Method for Automated Feature Space Discovery in Supervised Quantum Machine Learning Models

**Authors:**
Vladimir Rastunkov,
Jae-Eun Park,
Abhijit Mitra,
Brian Quanz,
Steve Wood,
Christopher Codella,
Heather Higgins,
Joseph Broz

**Abstract:**

Quantum Support Vector Machines (QSVM) have become an important tool in research and applications of quantum kernel methods. In this work we propose a boosting approach for building ensembles of QSVM models and assess performance improvement across multiple datasets. This approach is derived from the best ensemble building practices that worked well in traditional machine learning and thus should push the limits of quantum model performance even further. We find that in some cases, a single QSVM model with tuned hyperparameters is sufficient to simulate the data, while in others - an ensemble of QSVMs that are forced to do exploration of the feature space via proposed method is beneficial.

**Keywords:**
QSVM,
Quantum Support Vector Machines,
quantum
kernel,
boosting,
ensemble.

##### 8645 A Functional Interpretation of Quantum Theory

**Authors:**
Hans H. Diel

**Abstract:**

**Keywords:**
Computability,
Foundation of Quantum Mechanics,
Measurement Problem,
Models of Physics.

##### 8644 Problems and Possible Solutions with the Development of a Computer Model of Quantum Theory

**Authors:**
Hans H. Diel

**Abstract:**

**Keywords:**
Computability,
Foundation of Quantum Mechanics,
Measurement Process,
Modeling.

##### 8643 Unconditionally Secure Quantum Payment System

**Authors:**
Essam Al-Daoud

**Abstract:**

A potentially serious problem with current payment systems is that their underlying hard problems from number theory may be solved by either a quantum computer or unanticipated future advances in algorithms and hardware. A new quantum payment system is proposed in this paper. The suggested system makes use of fundamental principles of quantum mechanics to ensure the unconditional security without prior arrangements between customers and vendors. More specifically, the new system uses Greenberger-Home-Zeilinger (GHZ) states and Quantum Key Distribution to authenticate the vendors and guarantee the transaction integrity.

**Keywords:**
Bell state,
GHZ state,
Quantum key distribution,
Quantum payment system.

##### 8642 Improved Fuzzy Neural Modeling for Underwater Vehicles

**Authors:**
O. Hassanein,
Sreenatha G. Anavatti,
Tapabrata Ray

**Abstract:**

**Keywords:**
AUV,
AUV dynamic model,
fuzzy control,
fuzzy modelling,
adaptive fuzzy control,
back propagation,
system identification,
neural fuzzy model,
FLNN.

##### 8641 A Closed Form Solution for Hydrodynamic Pressure of Gravity Dams Reservoir with Effect of Viscosity under Dynamic Loading

**Authors:**
B. Navayineya,
J. Vaseghi Amiri,
M. Alijani Ardeshir

**Abstract:**

Hydrodynamic pressures acting on upstream of concrete dams during an earthquake are an important factor in designing and assessing the safety of these structures in Earthquake regions. Due to inherent complexities, assessing exact hydrodynamic pressure is only feasible for problems with simple geometry. In this research, the governing equation of concrete gravity dam reservoirs with effect of fluid viscosity in frequency domain is solved and then compared with that in which viscosity is assumed zero. The results show that viscosity influences the reservoir-s natural frequency. In excitation frequencies near the reservoir's natural frequencies, hydrodynamic pressure has a considerable difference in compare to the results of non-viscose fluid.

**Keywords:**
Closed form solution,
concrete dams reservoir,
viscosity,
dynamic loads,
hydrodynamic pressure.