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2006

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A Molecular Dynamics Study Of The Static Structure, Thermodynamic And Transport Properties Of Liquid Iron Using The Modified Analytic Embedded Atom Method, Serap Şentürk Dalgiç, İbrahi̇m Koçoğlu Jan 2006

A Molecular Dynamics Study Of The Static Structure, Thermodynamic And Transport Properties Of Liquid Iron Using The Modified Analytic Embedded Atom Method, Serap Şentürk Dalgiç, İbrahi̇m Koçoğlu

Turkish Journal of Physics

Using the modified analytic embedded atom method (MAEAM), we have carried out molecular dynamics (MD) simulation to compute structure,thermodynamic and transport properties of liquid iron. The Foiles type effective pair potential based on the MAEAM potential functions proposed by Quyang and co-workers are shown to predict the pair distribution function well near its melting. The calculated thermodynamic properties such as, the internal energy, Helmholtz free energy and entropy are in a good agreement with experimental data. The results for the computed self-diffusion coefficients are in reasonable agreement with experiments and other works.

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Self-Diffusion Coefficients In Liquid Ag Using The Embedded Atom Model Based Effective Pair Potentials, Seyfetti̇n Dalgiç, Mutlu Çolakoğullari Jan 2006

Self-Diffusion Coefficients In Liquid Ag Using The Embedded Atom Model Based Effective Pair Potentials, Seyfetti̇n Dalgiç, Mutlu Çolakoğullari

Turkish Journal of Physics

We present the dynamical properties of liquid Ag at different temperatures, using the Mishin and Doyoma-Kagure version of the Embedded Atom Model (EAM) potentials. They have been evaluated within the framework of the mode-coupling theory, using a self-consistent scheme that uses as input data only the static structure functions and the interatomic pair potentials of the liquid Ag. We have computed single-particle and collective time dependent properties of liquid Ag, and thereby calculated its self-diffusion constants. We have also discussed our results comparing with both experimental data and results of molecular dynamic simulation.

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Molecular Dynamics Study Of Thermal Properties Of Intermetallic Alloys, H. H. Kart, Mehmet Tomak, Tahi̇r Çağin Jan 2006

Molecular Dynamics Study Of Thermal Properties Of Intermetallic Alloys, H. H. Kart, Mehmet Tomak, Tahi̇r Çağin

Turkish Journal of Physics

Molecular dynamics simulations of bulk copper, gold pure metals and their ordered intermetallics alloys of Cu_3Au(L1_2) and CuAu_3(L1_2) have been carried out between above 0 K and below the their melting points of the materials for predicting their temperature-dependent thermophysical properties. The effects of temperature and concentration on the physical properties such as enthalpy, volume, heat capacity, thermal expansion and density of Cu_xAu_{1-x} are studied. Especially, temperature-dependent polynomial functions of enthalpy, volume and density are obtained. Sutton-Chen (SC) and Quantum Sutton-Chen (Q-SC) many-body potentials are used in the constant enthalpy-constant pressure ensemble (HPN) and constant pressure-constant temperature ensemble (TPN). Three …

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Effect Of A Finite Number Of Electrons On The Physical Properties Of Two Dimensional Parabolic Quantum Dot, Berna Gülveren, Ülfet Atav, Mehmet Tomak Jan 2006

Effect Of A Finite Number Of Electrons On The Physical Properties Of Two Dimensional Parabolic Quantum Dot, Berna Gülveren, Ülfet Atav, Mehmet Tomak

Turkish Journal of Physics

The effect of number of particles on the physical properties of a two dimensional parabolic quantum dot system is investigated numerically at finite temperature. The Thomas-Fermi equation is solved self consistently with Poisson equation. The changes induced by electron-electron interaction are also analyzed. It is shown that the numerical procedure that is applied to solve the problem is very efficient at all temperatures.

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Molecular Dynamics Studies On Glass Formation Of Pd-Ni Alloys By Rapid Quenching, Sevgi̇ Özdemi̇r Kart, Mehmet Tomak, Mustafa Uludoğan, Tahi̇r Çağin Jan 2006

Molecular Dynamics Studies On Glass Formation Of Pd-Ni Alloys By Rapid Quenching, Sevgi̇ Özdemi̇r Kart, Mehmet Tomak, Mustafa Uludoğan, Tahi̇r Çağin

Turkish Journal of Physics

The rapid solidification of Pd-Ni alloys is studied with the constant-pressure and constant-temperature (TPN) and the constant-volume and constant-temperature (TVN) molecular dynamics technique to obtain an atomic description of glass formation in the alloy. Quantum Sutton-Chen potential for Pd-Ni binary system is applied in the simulations. We present some thermodynamic and structural results from simulations of such glasses over a range of compositions. The structural properties are analyzed by means of pair distribution function, volume, and enthalpy as a function of temperature and concentration at the cooling rates ranging from 5 K/ps to 0.05 K/ps to see whether the Pd-Ni …

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Casimir Energies For Some Single Cavities, Haci Ahmedov, İsmai̇l Hakki Duru Jan 2006

Casimir Energies For Some Single Cavities, Haci Ahmedov, İsmai̇l Hakki Duru

Turkish Journal of Physics

Casimir energies are discussed for some cavities.

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Cover And Contents Jan 2006

Cover And Contents

Turkish Journal of Physics

No abstract provided.

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Hamilton-Jacobi Formulation Of Siegel Superparticle, N. I. Farahat, Hanaa A. Elegla Jan 2006

Hamilton-Jacobi Formulation Of Siegel Superparticle, N. I. Farahat, Hanaa A. Elegla

Turkish Journal of Physics

The Hamilton-Jacobi formalism of constrained systems is used to study Siegel superparticles moving in R^{4 mid 4} flat superspace. The equations of motion for a singular system are obtained as total differential equations in many variables. These equations of motion are in exact agreement with those obtained by Dirac's method.

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Helicity Dependence Of The \Vec\Gamma\Vec N \To \Pi N Reaction Channels In The \Delta-Resonance Region, Eed M. Darwish, Mohamed A. El-Zohry Jan 2006

Helicity Dependence Of The \Vec\Gamma\Vec N \To \Pi N Reaction Channels In The \Delta-Resonance Region, Eed M. Darwish, Mohamed A. El-Zohry

Turkish Journal of Physics

Based on a prior effective Lagrangian model on single pion photoproduction from the nucleon, successfully tested in total and differential cross sections, the helicity dependence from the interaction of circularly polarized photons and a longitudinally polarized nucleon target is studied in the energy range from \pi-threshold through the \Delta(1232)-resonance region. The doubly polarized total and differential cross section differences for parallel \sigma^{3/2} and antiparallel \sigma^{1/2} helicity states are predicted and compared with recent experimental data. We show that the results are sensitive to interferences among different contributions to the process and, thus, represent a complementary test of the theoretical model. …

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Ibm-2 Calculations Of Selected Even-Even Ruthenium Nuclei, İlyas İnci̇, Nuretti̇n Türkan Jan 2006

Ibm-2 Calculations Of Selected Even-Even Ruthenium Nuclei, İlyas İnci̇, Nuretti̇n Türkan

Turkish Journal of Physics

In this study, we have employed the Interacting Boson Model-2 (IBM-2) to determine the most appropriate Hamiltonian for the study of ruthenium nuclei in the region A \cong 100. Using the best fit values of parameters to construct the Hamiltonian, we have estimated energy levels and multipole mixing ratios (\delta (E2/M1)) for some doubly-even Ru nuclei. The results are compared with previous experimental and theoretical data and it is observed that they are in good agreement.

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Ibm-2 Calculations Of Selected Even-Even Palladium Nuclei, İlyas İnci̇, Nuretti̇n Türkan Jan 2006

Ibm-2 Calculations Of Selected Even-Even Palladium Nuclei, İlyas İnci̇, Nuretti̇n Türkan

Turkish Journal of Physics

In this study, we have employed the Interacting Boson Model-2 (IBM-2) to determine the most appropriate Hamiltonian for the study of palladium nuclei. Using the best fit values of parameters to construct the Hamiltonian, we have estimated energy levels and multipole mixing ratios (\delta (E2/M1)) for some doubly-even Pd nuclei. The results are compared with previous experimental and theoretical data and it is observed that they are in good agreement.

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Band Gap Of Cubic Aln, Gan And Inn Compounds Under Pressure, S. Berrah, Hamza Abid, A. Boukortt, Mohamed Sehil Jan 2006

Band Gap Of Cubic Aln, Gan And Inn Compounds Under Pressure, S. Berrah, Hamza Abid, A. Boukortt, Mohamed Sehil

Turkish Journal of Physics

Numerical simulation based on FP-LAPW calculations is applied to study the lattice parameters, bulk modulus and band gap energy of zinc blende binaries AlN, GaN and InN under hydrostatic pressure. The results obtained are in a good agreement with experimental and theoretical values.

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Comment On "Characterization Of In_4te_3 Single Crystals", M. Cankurtaran, H. Çeli̇k Jan 2006

Comment On "Characterization Of In_4te_3 Single Crystals", M. Cankurtaran, H. Çeli̇k

Turkish Journal of Physics

No abstract provided.

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Cover And Contents Jan 2006

Cover And Contents

Turkish Journal of Physics

No abstract provided.

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Relationships Between Deflector Faults, Collapse Dolines And Collector Channel Formation: Some Examples From Slovenia, France Šušteršič Jan 2006

Relationships Between Deflector Faults, Collapse Dolines And Collector Channel Formation: Some Examples From Slovenia, France Šušteršič

International Journal of Speleology

In some Slovenian caves collector channels gather sinking underground streams and redirect them for potentially long distances parallel to certain faults. The collector channels formed due to ongoing long-term collapse of cave roofs at the points where passages break through the faults, which function as a kind of screen and are termed deflector faults. The fault trends are marked by collapse within the caves, and by active collapse dolines at the surface.

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Fabrication Of Polymer Based Optical Devices For Communication And Sensing, Sandhya Pochiraju Jan 2006

Fabrication Of Polymer Based Optical Devices For Communication And Sensing, Sandhya Pochiraju

University of Kentucky Master's Theses

Polymer waveguides present a potentially low cost alternative to electronics in communication systems. Polymers offer relatively straightforward and economical fabrication when compared to conventional materials. In this study, a fabrication process for Bragg gratings in polymer waveguides was developed. Waveguides were designed using finite-element analysis, patterned via e-beam lithography, and a detailed fabrication method was developed. Surface-Plasmon Resonance (SPR) is a widely accepted method for biological and chemical sensing. Measurement of bulk refractive index changes and specific surface binding is a crucial part in any biosensing. Design and fabrication of a novel self-referencing SPR sensor is described and its functionality …

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Characterization Of Multimeric Complexes Formed By The Human Ptb1 Protein On Rna, Caroline Clerte, Kathleen B. Hall Jan 2006

Characterization Of Multimeric Complexes Formed By The Human Ptb1 Protein On Rna, Caroline Clerte, Kathleen B. Hall

Open Access Publications

No abstract provided.

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A Phase I Trial Of Docetaxel And Vinorelbine In Patients With Advanced Non-Small Cell Lung Cancer, Ramaswamy Govindan, Wan-Teck Lim, Matthew A. Arquette, Sherry A. Goodner, Carole L. Fears, Joanne E. Mortimer, Paula M. Fracasso Jan 2006

A Phase I Trial Of Docetaxel And Vinorelbine In Patients With Advanced Non-Small Cell Lung Cancer, Ramaswamy Govindan, Wan-Teck Lim, Matthew A. Arquette, Sherry A. Goodner, Carole L. Fears, Joanne E. Mortimer, Paula M. Fracasso

Open Access Publications

No abstract provided.

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Relationships Between Upper-Limb Functional Limitation And Self-Reported Disability 3 Months After Stroke, Alexander W. Dromerick, Catherine E. Lang, Rebecca Birkenmeier, Michele G. Hahn, Shirley A. Sahrmann, Dorothy F. Edwards Jan 2006

Relationships Between Upper-Limb Functional Limitation And Self-Reported Disability 3 Months After Stroke, Alexander W. Dromerick, Catherine E. Lang, Rebecca Birkenmeier, Michele G. Hahn, Shirley A. Sahrmann, Dorothy F. Edwards

Open Access Publications

No abstract provided.

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Contrasting Models Of Genetic Co-Morbidity For Cannabis And Other Illicit Drugs In Adult Australian Twins, A. Agrawal, M. T. Lynskey, K. K. Bucholz, N. G. Martin, P. A F Madden, A. C. Heath Jan 2006

Contrasting Models Of Genetic Co-Morbidity For Cannabis And Other Illicit Drugs In Adult Australian Twins, A. Agrawal, M. T. Lynskey, K. K. Bucholz, N. G. Martin, P. A F Madden, A. C. Heath

Open Access Publications

No abstract provided.

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Biology And Genome Of Trichinella Spiralis, Makedonka Mitreva, Douglas P. Jasmer Jan 2006

Biology And Genome Of Trichinella Spiralis, Makedonka Mitreva, Douglas P. Jasmer

Open Access Publications

No abstract provided.

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Effect Of Exercise Training On In Vitro Ldl Oxidation And Free Radical-Induced Hemolysis: The Heritage Family Study, Denis Blache, Suzanne Lussier-Cacan, Jacques Gagnon, Arthur S. Leon, D.C. Rao, James S. Skinner, Jack H. Wilmore, Tuomo Rankinen, Claude Bouchard, Jean Davignon Jan 2006

Effect Of Exercise Training On In Vitro Ldl Oxidation And Free Radical-Induced Hemolysis: The Heritage Family Study, Denis Blache, Suzanne Lussier-Cacan, Jacques Gagnon, Arthur S. Leon, D.C. Rao, James S. Skinner, Jack H. Wilmore, Tuomo Rankinen, Claude Bouchard, Jean Davignon

Open Access Publications

No abstract provided.

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Risperidone In Preschool Children With Autistic Spectrum Disorders: An Investigation Of Safety And Efficacy, Joan Luby, Christine Mrakotsky, Melissa Meade Stalets, Andy Belden, Amy Heffelfinger, Meghan Williams, Edward Spitznagel Jan 2006

Risperidone In Preschool Children With Autistic Spectrum Disorders: An Investigation Of Safety And Efficacy, Joan Luby, Christine Mrakotsky, Melissa Meade Stalets, Andy Belden, Amy Heffelfinger, Meghan Williams, Edward Spitznagel

Open Access Publications

No abstract provided.

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Development Of The Minimum Information Specification For In Situ Hybridization And Immunohistochemistry Experiments (Misfishie), Jason C. Mills, Et Al Jan 2006

Development Of The Minimum Information Specification For In Situ Hybridization And Immunohistochemistry Experiments (Misfishie), Jason C. Mills, Et Al

Open Access Publications

No abstract provided.

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Environmental Management Information Systems (Emis) For Sustainable Development: A Conceptual Overview, Omar F. El-Gayar, Brian D. Fritz Jan 2006

Environmental Management Information Systems (Emis) For Sustainable Development: A Conceptual Overview, Omar F. El-Gayar, Brian D. Fritz

Research & Publications

Environmental management information systems (EMIS) is defined as 'organizational-technical systems for systematically obtaining, processing, and making available relevant environmental information available in companies'. Such systems evolved out of a growing need to manage environmental information in response to internal and external pressures such as regulations, consumers, stockholders, and changes in the business environments. While over the past decade EMIS have proliferated in the corporate landscape, these systems have received little attention within the information systems research community as whole. The objective of this paper is to serve as a tutorial providing a conceptual overview of EMIS, highlighting organizational and technical …

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Designing Information Systems Doctoral Programs: Issues And Challenges, Omar F. El-Gayar Jan 2006

Designing Information Systems Doctoral Programs: Issues And Challenges, Omar F. El-Gayar

Research & Publications

Doctoral programs aim at preparing students for stewardship in their discipline with particular emphasis on training for research. While doctoral programs have been conventionally offered by research institutions, market demands, changing needs, and other factors are driving traditionally teaching institutions to explore opportunities for implementing information systems (IS) doctoral programs. In this paper we present some of the issues and challenges involved in designing and implementing IS doctoral programs. The emphasis is on traditionally teaching institutions. The paper concludes with a set of recommendations and directions for future research on doctoral programs in information systems.

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Using Self-Efficacy Precepts To Evaluate The Instructional Effectiveness Of The Use Of Tablet Pc Systems In The Classroom, Richard T. Christoph, Richard D. Puetz, Jack H. Walters Jan 2006

Using Self-Efficacy Precepts To Evaluate The Instructional Effectiveness Of The Use Of Tablet Pc Systems In The Classroom, Richard T. Christoph, Richard D. Puetz, Jack H. Walters

Research & Publications

This paper provides initial results of a study administered to students enrolled in traditional classroombased courses at a small public university in the Midwest. This university has a technology mission and requires the use of Tablet PCs by all incoming students seeking bachelor’s degrees. The purpose of this study is first, to measure student reactions to components of Tablet PC-based instruction as suggested by self-efficacy precepts, and second, to measure the differences between student groups with regard to perceptions of academic performance when using Tablet PC systems in traditional classroom settings. Initial findings show strong student enthusiasm to the adoption …

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A Gaming Laboratory To Study Distributed Collaboration Processes., Halbana Tarmizi, Lucas Steinhauser, Matt Payne, Cherie Noteboom, Chi Zhang Jan 2006

A Gaming Laboratory To Study Distributed Collaboration Processes., Halbana Tarmizi, Lucas Steinhauser, Matt Payne, Cherie Noteboom, Chi Zhang

Research & Publications

Current events present many examples of situations where a fast and coordinated response is required from many and diverse organizations and stakeholders. Technology-mediated communication and collaboration may be the only option for getting things done in situations like these. There is a real need for research on the kinds of environments and processes that best support fast response on urgent tasks for virtual teams. The paper presents the development and initial test of a gaming laboratory to study such processes. The laboratory is adaptable to different kinds of situations. We discuss the design principles and implementation of the laboratory environment, …

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Seaplane Passenger Briefing—Notes For The Pilot, Aviators Code Initiative Jan 2006

Seaplane Passenger Briefing—Notes For The Pilot, Aviators Code Initiative

Seaplane Pilots Model Code of Conduct

This document may well provide the most comprehensive inventory of passenger briefing issues you have yet encountered. It was developed to complement the SEAPLANE PILOTS’MODEL CODE OF CONDUCT. However the following is not itself a passenger briefing. Rather, it is a tool for developing your own passenger briefings. You may also consider it an aid to help to develop an unofficial supplement to your Pilots Operating Handbook (POH).

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Seaplane Passenger Briefing Materials, Aviators Code Initiative Jan 2006

Seaplane Passenger Briefing Materials, Aviators Code Initiative

Passenger Briefing Material

Materials to help seaplane pilots brief their passengers, plus a model seaplane passenger briefing checklist.

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