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2008

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New Exact Traveling Wave Solutions For The Nonlinear Klein-Gordon Equation, Zaiyun Zhang Jan 2008

New Exact Traveling Wave Solutions For The Nonlinear Klein-Gordon Equation, Zaiyun Zhang

Turkish Journal of Physics

In this paper we discuss the nonlinear Klein-Gordon equation and we derive the new traveling wave solutions by applying trigonometric function series method. Also, they are complex linear combinations of kink solitary wave solutions and bell solitary wave solutions.

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Pressure Induced Phase Transition In Monopnictides Cesb And Lasb, Sadhna Singh, Raja Chauhan, Atul Gour Jan 2008

Pressure Induced Phase Transition In Monopnictides Cesb And Lasb, Sadhna Singh, Raja Chauhan, Atul Gour

Turkish Journal of Physics

In the present paper, monopnictides of Ce and La, which crystallize in B_1 structure, have been studied using effective interaction potential (EIP) approach. The phase transition pressure and volume collapses for CeSb and LaSb predicted from this approach are found to be close to experimental data.

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High Field Conduction In Thin Films Of A-(Ge_{.20}{Se0}_{.80})_{1-X}{Pb}_X Glassy Alloys, Rachna Singh, Santosh Kumar Jan 2008

High Field Conduction In Thin Films Of A-(Ge_{.20}{Se0}_{.80})_{1-X}{Pb}_X Glassy Alloys, Rachna Singh, Santosh Kumar

Turkish Journal of Physics

The present paper reports d.c. conductivity measurements at high electric fields in vacuum evaporated amorphous thin films of (Ge_{.20}Se0_{.80})_{1-x}Pb_x (where x = 0, 0.02, 0.04, 0.06 and 0.10) glassy alloys. Current-Voltage (I-V) Characteristics have been measured at various fixed temperatures. In these samples, at low electric fields, ohmic behavior is observed. However, at high electric fields (E \sim 10^4 V/cm), non-ohmic behavior is observed. An analysis of the experimental data confirms the presence of space charge limited conduction (SCLC) in the glassy materials studied in the present case. From the fitting of the data to the theory of SCLC, the …

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Path Integral Evaluation Of A Time-Dependent Oscillator In An External Field, Akpan Ndem Ikot, Eno Etim Ituen, Ime. E. Essien, Louis Ete Akpabio Jan 2008

Path Integral Evaluation Of A Time-Dependent Oscillator In An External Field, Akpan Ndem Ikot, Eno Etim Ituen, Ime. E. Essien, Louis Ete Akpabio

Turkish Journal of Physics

The Lagrangian of a system describing the dynamical behaviour of a time-dependent harmonic oscillator is modified and then used to evaluate the Feynman path integral of the oscillator. The path integral of the time-dependent oscillator is shown to reduce to the time-independent within certain limits.

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Electric Dipole Oscillator Strengths Of Boron, Gökhan Tekeli̇, Şule Ateş, Gülteki̇n Çeli̇k Jan 2008

Electric Dipole Oscillator Strengths Of Boron, Gökhan Tekeli̇, Şule Ateş, Gülteki̇n Çeli̇k

Turkish Journal of Physics

Electric dipole oscillator strengths for both individual and multiplet lines between some excited levels of atomic boron are calculated using the Weakest Bound Electron Potential Model Theory (WBEPMT). The Numerical Coulomb Approximation wave functions for expectation values of radii in all states and experimental ionization energies have been employed to determinate the parameters. The obtained results from this work agree very well with the accepted values taken from NIST, Multi-Configurational Hartree-Fock (MCHF) results and atomic line data.

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Static Plane Symmetric Zeldovich Fluid Model In Scale Invariant Theory, Bivudutta Mishra Jan 2008

Static Plane Symmetric Zeldovich Fluid Model In Scale Invariant Theory, Bivudutta Mishra

Turkish Journal of Physics

Field equations in the presence of a perfect fluid distribution for static plane symmetric metric are obtained in the scale invariant theory of gravitation proposed by Wesson [1]. A static Zeldovich fluid model corresponding to perfect fluid is presented. Physical and kinematical properties of the model are discussed.

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Masses Of Charged Leptons And Gauge Mixing Parameters, Cvavb Chandra Raju Jan 2008

Masses Of Charged Leptons And Gauge Mixing Parameters, Cvavb Chandra Raju

Turkish Journal of Physics

It is shown that the electroweak physics of the electron and the muon is based on the left-right gauge model with the mixing parameters 0.2254 and 0.2746. These mixing parameters are determined by the masses of the electron and the muon. The electroweak physics of the Tau-lepton and its left-handed neutrino is based on the gauge group SU(2)_L XU(1).The mixing parameter for this gauge model is 0.5 and is determined by the mass of the charged Tau-lepton. The W and Z bosons that mediate the electroweak physics of Tau-lepton and its neutrino have masses 173.5 GeV and 245.4 GeV, respectively.

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Nonlinear Two-Mode Squeezed Vacuum States As Realization Of Su(1,1) Lie Algebra, Gamal Mohamed Abd Al-Kader, Abdel-Shafy Fahmy Obada Jan 2008

Nonlinear Two-Mode Squeezed Vacuum States As Realization Of Su(1,1) Lie Algebra, Gamal Mohamed Abd Al-Kader, Abdel-Shafy Fahmy Obada

Turkish Journal of Physics

Nonlinear extensions of the two-mode squeezed vacuum states (NTMSVS's) are constructed and special cases of these states are discussed. We have constructed the NTMSVS's realization of SU(1,1) Lie algebra. Two cases of the definition are considered for unitary and non-unitary deformation operator functions. Some nonclassical properties of these states are discussed.

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Stability Of Hickson Groups Of Galaxies, Ibrahim Selim, Naseer Iqbal Jan 2008

Stability Of Hickson Groups Of Galaxies, Ibrahim Selim, Naseer Iqbal

Turkish Journal of Physics

In this work we have used the Viril theorem to investigate the dynamical stability of Hickson compact groups of galaxies. The average luminous mass of the galaxies member is approximately 1.3 \times 0^{11} M_{\odot} and average total luminous mass of group is approximately 4.6 \times 0^{11} M_{\odot}. The virial theorem has used to estimate the virial mass. The average Virial mass of group of galaxies is approximately 6.3 \times 0^{13} M_{\odot} This is attributed to the presence of large amount of dark matter which is more than 90% in this group. Hickson compact groups of galaxies are unstable system due …

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Theoretical Investigation Of Superconducting State Parameters Of Binary Metallic Glasses Cu_{1-C}Sn_C, Aditya M. Vora Jan 2008

Theoretical Investigation Of Superconducting State Parameters Of Binary Metallic Glasses Cu_{1-C}Sn_C, Aditya M. Vora

Turkish Journal of Physics

Superconducting state parameters (SSP) viz. electron-phonon coupling strength \lambda, Coulomb pseudopotential \mu^*, transition temperature T_C, isotope effect exponent \alpha and effective interaction strength N_O V of seven Cu_{1-c} Sn_c binary metallic glasses have been reported using Ashcroft's empty core (EMC) model potential for the first time. Five local field correction functions proposed by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) are used in the present investigation to study the screening influence on the aforesaid properties. The T_C obtained from H-local field correction function are found in qualitative agreement with available experimental data …

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Theoretical Analysis Of Acoustic Attenuation And Nonlinearity In Barium Monochalcogenides In B2 Phase, Rajendra Kumar Singh, Rishi Pal Singh, Manish Pratap Singh, Sujeet Kumar Chaurasia Jan 2008

Theoretical Analysis Of Acoustic Attenuation And Nonlinearity In Barium Monochalcogenides In B2 Phase, Rajendra Kumar Singh, Rishi Pal Singh, Manish Pratap Singh, Sujeet Kumar Chaurasia

Turkish Journal of Physics

Temperature dependence of ultrasonic attenuation due to phonon-phonon interaction and thermo-elastic loss have been studied in (CsCl-type) barium monochalcogenides (BaX, X= S, Se, Te), in the temperature range 50-500 K; for longitudinal and shear modes of propagation along , and directions. Second and third order elastic constants have been evaluated using electrostatic and Born repulsive potentials and taking interactions up to next nearest neighbours. Gruneisen parameters, nonlinearity constants, nonlinearity constants ratios and viscous drag due to screw and edge dislocations have also been evaluated for longitudinal and shear waves at 300 K. In the present investigation, it has been found …

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Jules Verne In English: A Bibliography Of Modern Editions And Scholarly Studies, Arthur B. Evans Jan 2008

Jules Verne In English: A Bibliography Of Modern Editions And Scholarly Studies, Arthur B. Evans

Global Language Studies Faculty publications

No abstract provided.

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A Linguistic Analysis Of Chat Reference Conversations With 18–24-Year-Old College Students, Jack M. Maness Jan 2008

A Linguistic Analysis Of Chat Reference Conversations With 18–24-Year-Old College Students, Jack M. Maness

University Libraries: Faculty Scholarship

Thirty-one chat reference conversations were linguistically analyzed, compared to twenty-three instant messaging (IM) conversations held between students, and further correlated to students’ satisfaction with the reference interaction. Conversations between librarians and students in chat reference are more formal than those solely involving students, and the use of some linguistic patterns are correlated to user satisfaction.

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Reconceptualizing Property In Designs, Orit Fischman Afori Jan 2008

Reconceptualizing Property In Designs, Orit Fischman Afori

Cardozo Arts & Entertainment Law Journal

No abstract provided.

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All The News That's Fit To Split: Newspaper Mergers, Antitrust Laws And The First Amendment, Richard Brand Jan 2008

All The News That's Fit To Split: Newspaper Mergers, Antitrust Laws And The First Amendment, Richard Brand

Cardozo Arts & Entertainment Law Journal

No abstract provided.

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Table Of Contents - Cardozo Arts & Entertainment Law Journal, Vol. 26, Iss. 2 Jan 2008

Table Of Contents - Cardozo Arts & Entertainment Law Journal, Vol. 26, Iss. 2

Cardozo Arts & Entertainment Law Journal

No abstract provided.

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Web Security Detection Tool, Abhishek Agashe Jan 2008

Web Security Detection Tool, Abhishek Agashe

Master's Projects

According to Government Computer News (GCN) web attacks have been marked as all- time high this year. GCN says that some of the leading security software like SOPHOS detected about 15,000 newly infected web pages daily in initial three months of 2008 [13]. This has lead to the need of efficient software to make web applications robust and sustainable to these attacks. While finding information on different types of attacks, I found that SQL injection and cross site scripting are the most famous among attackers. These attacks are used extensively since, they can be performed using different techniques and it …

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Sql Injection Analysis, Detection And Prevention, Jagdish Halde Jan 2008

Sql Injection Analysis, Detection And Prevention, Jagdish Halde

Master's Projects

Web sites are dynamic, static, and most of the time a combination of both. Web sites need protection in their database to assure security. An SQL injection attacks interactive web applications that provide database services. These applications take user inputs and use them to create an SQL query at run time. In an SQL injection attack, an attacker might insert a malicious SQL query as input to perform an unauthorized database operation. Using SQL injection attacks, an attacker can retrieve or modify confidential and sensitive information from the database. It may jeopardize the confidentiality and security of Web sites which …

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Efficient Resource Management Mechanism For 802.16 Wireless Networks Based On Weighted Fair Queuing, Kiran Rangula Jan 2008

Efficient Resource Management Mechanism For 802.16 Wireless Networks Based On Weighted Fair Queuing, Kiran Rangula

Master's Projects

Wireless Networking continues on its path of being one of the most commonly used means of communication. The evolution of this technology has taken place through the design of various protocols. Some common wireless protocols are the WLAN, 802.16 or WiMAX, and the emerging 802.20, which specializes in high speed vehicular networks, taking the concept from 802.16 to higher levels of performance. As with any large network, congestion becomes an important issue. Congestion gains importance as more hosts join a wireless network. In most cases, congestion is caused by the lack of an efficient mechanism to deal with exponential increases …

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Employee Performance Assessment In Quality Assurance, Rahul Jain Jan 2008

Employee Performance Assessment In Quality Assurance, Rahul Jain

Master's Projects

Employee performance often determines the progress of a company. Poor appraisals and improper assessment directly effects employee satisfaction and impair company results. Many managers rely primarily on behavioral impressions without appropriately including factual information of the actual work done. There is clear benefit from procedures that elicit and use both factual and subjective criteria for assessment. Analytical Hierarchy Process (AHP) is a methodology that can be applied to complex decisions with multiple criteria [29]. AHP has the capability to combine both subjective and objective evaluation factors, thereby minimizing bias in decision making [29]. The methodology also allows subjective measures from …

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Design & Evaluation Of Path-Based Reputation System For Manet Routing, Ji Li Jan 2008

Design & Evaluation Of Path-Based Reputation System For Manet Routing, Ji Li

Master's Projects

Most of the existing reputation systems in mobile ad hoc networks (MANET) consider only node reputations when selecting routes. Reputation and trust are therefore generally ensured within a one-hop distance when routing decisions are made, which often fail to provide the most reliable, trusted route. In this report, we first summarize the background studies on the security of MANET. Then, we propose a system that is based on path reputation, which is computed from reputation and trust values of each and every node in the route. The use of path reputation greatly enhances the reliability of resulting routes. The detailed …

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Role Of The Reactive Oxygen Species Peroxynitrite In Traumatic Brain Injury, Ying Deng Jan 2008

Role Of The Reactive Oxygen Species Peroxynitrite In Traumatic Brain Injury, Ying Deng

University of Kentucky Doctoral Dissertations

Reactive oxygen species (ROS) is cytotoxic to the cell and is known to contribute to secondary cell death following primary traumatic brain injury (TBI). We described in our study that PN is the main mediator for both lipid peroxidation and protein nitration, and occurred almost immediately after injury. As a downstream factor to oxidative damage, the peak of Ca2+-dependent, calpainmediated cytoskeletal proteolysis preceded that of neurodegeneration, suggesting that calpain-mediated proteolysis is the common pathway leading to neuronal cell death. The time course study clearly elucidated the interrelationship of these cellular changes following TBI, provided window of opportunity for pharmacological intervention. …

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The Crusade, Raquel Sanchez Jan 2008

The Crusade, Raquel Sanchez

Digressions: Literary & Art Journal

No abstract provided.

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Leap Of Faith, Chana Dukes Jan 2008

Leap Of Faith, Chana Dukes

Digressions: Literary & Art Journal

No abstract provided.

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The Story Of Us Two, Iva Marc Jan 2008

The Story Of Us Two, Iva Marc

Digressions: Literary & Art Journal

No abstract provided.

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Regional Differences And Associations With Obesity-Related Factors In Overweight And Obese U.S. Southern Elderly People, Akemi Sakamoto Jan 2008

Regional Differences And Associations With Obesity-Related Factors In Overweight And Obese U.S. Southern Elderly People, Akemi Sakamoto

University of Kentucky Master's Theses

The growing prevalence of overweight and obesity among United States (U.S.) elderly people today is a health concern. Higher incidences of obesity and obesity-related health conditions and mortality exist in the southern area of the U.S. Understanding obesity in relation to obesity-related factors in this population is crucial. The purpose of this study was to identify regional differences and associations between obesity and obesity-related factors in Southern U.S. elderly people, as defined by the U.S. Census Bureau, using data from the 2005 Behavioral Risk Factor Surveillance System (BRFSS), an existing telephone health survey administered by the Centers for Disease Control …

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Support Vector Machine For High Throughput Rodent Sleep Behavior Classification, Shantilal Jan 2008

Support Vector Machine For High Throughput Rodent Sleep Behavior Classification, Shantilal

University of Kentucky Master's Theses

This thesis examines the application of a Support Vector Machine (SVM) classifier to automatically detect sleep and quiet wake (rest) behavior in mice from pressure signals on their cage floor. Previous work employed Neural Networks (NN) and Linear Discriminant Analysis (LDA) to successfully detect sleep and wake behaviors in mice. Although the LDA was successful in distinguishing between the sleep and wake behaviors, it has several limitations, which include the need to select a threshold and difficulty separating additional behaviors with subtle differences, such as sleep and rest. The SVM has advantages in that it offers greater degrees of freedom …

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Determination Of The Extravascular Burden Of Carbon Monoxide (Co) On Human Heart, Kinnera Erupaka Jan 2008

Determination Of The Extravascular Burden Of Carbon Monoxide (Co) On Human Heart, Kinnera Erupaka

University of Kentucky Master's Theses

Noninvasive measurements of myocardial carboxymyoglobin levels (%MbCO) and oxygen tensions (PtO2) are difficult to obtain experimentally. We have developed a compartmental model which allows prediction of myocardial %MbCO levels and PtO2 for varied carbon monoxide (CO) exposures. The cardiac compartment in the model consists of vascular subcompartments which contain two tissue subcompartments varying in capillary density. Mass-balance equations for oxygen (O2) and CO are applied for all compartments. Myocardial oxygen consumption and blood flow are quantified from predictive formulas based on heart rate. Model predictions are validated with experimental data at normoxia, hypoxia, exercise and hyperoxia. CO exposures of varying …

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Schottky Diodes From Cadmium Sulfide (Cds) Nanowires Deposited In Porous Alumina Templates, Shounak Mishra Jan 2008

Schottky Diodes From Cadmium Sulfide (Cds) Nanowires Deposited In Porous Alumina Templates, Shounak Mishra

University of Kentucky Master's Theses

This work aims to study the variation in electrical and optical properties of nanoscale Schottky diodes by varying their dimensions in the nanoscale. Experimental conditions for fabricating porous alumina with varying pore diameters and inter-pore distances were first optimized by anodizing Aluminum tape with variable currents. Cadmium Sulfide nanowires were then synthesized inside the membranes by dc electrodeposition. Finally a high work function metal was deposited on top as a contact for the metal-semiconductor Schottky diode junction. As a comparative study, Schottky diodes fabricated using the same metals and Cadmium Sulfide thin films deposited on conducting glass substrates using electro-deposition …

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Topology-Based Modeling And Analysis Of Orthogonal Cutting Process, Rajesh Kandibanda Jan 2008

Topology-Based Modeling And Analysis Of Orthogonal Cutting Process, Rajesh Kandibanda

University of Kentucky Master's Theses

This thesis presents the application of topology to machining at the micro and macro levels through an experimental study, modeling and analysis. Uncoated carbide tools of four different cutting edge radii and four different feed rates are used to perform orthogonal machining on AISI 1045 steel disks. The study analyzes the cutting forces, changing grain boundary parameters, micro-hardness, temperature and correlates them to the residual stresses that hold a key to the product life. This analysis helps to understand and evaluate the aspects of grain boundary engineering that influence the fatigue life of a component. The two components of residual …

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