Digital Commons Network^™

Developing A Web-Based Video Tutorial On Using Hyperstudio, Sangsun Kim

Graduate Research Papers

The goal of this project was to provide an effective way for students to learn how to use an authoring language, HyperStudio, through an efficient interactive on-line environment. The author begins by identifying the necessary components for effective web-based tutorials and exploring video's impact on delivering web-based tutorials. The process used to plan, design, develop and implement this project was explained. This project demonstrates how a web-based tutorial can be created to assist the traditional classroom as a supplementary medium.

Best Practices In Middle Level Mathematics Teaching And Learning, Wendy Sue Korte

Graduate Research Papers

The added pressure on students and teachers to do well in mathematics has placed a new emphasis on how best to teach math. This paper discusses the standards developed by the National Council of Teachers of Mathematics and how those standards can be implemented into classrooms in order to help students to increase their mathematical power. Although teaching to the standards would be a drastic change for many teachers with the proper professional development, standards-based math classes could be a reality that will help our students' mathematical understanding.

Stratigraphic And Palaeoenvironmental Significance Of Bartonian–Priabonian (Middle–Late Eocene) Microfossils From The Başçeşme Formation, Denizli Province, Western Anatolia, M. Serkan Akki̇raz, Funda Akgün, Sefer Örçen, Angela Bruch, Volker Mosbrugger

Turkish Journal of Earth Sciences

This study explains the stratigraphical and palaeoenvironmental significance of Bartonian-Priabonian (Middle-Late Eocene) fossils, the fauna and flora obtained from the Başçeşme formation of the Çardak-Tokça basin (western Anatolia). The studied sequence is an outcrop from the Başçeşme formation, deposited in a shallow-marine to coastal environment without stratigraphic breaks. Forty genera and 58 species have been recognized in the palynological assemblage of the Başçeşme formation. A well-preserved diverse palynomorph and foraminiferal assemblages yield the Middle-Late Eocene age for the Başçeşme formation. In western Anatolia, mangrove elements Nypa and Pelliciera have been first recorded in this study. The pollen of Mauritia and …

Ensemble Teleportation, Thomas Krüger

Turkish Journal of Physics

The possibility of teleportation is by sure the most interesting consequence of quantum non-separability. So far, however, teleportation schemes have been formulated by use of state vectors and considering individual entities only. In the present article the feasibility of teleportation is examined on the basis of the rigorous ensemble interpretation of quantum mechanics (not to be confused with a mere treatment of noisy EPR pairs) leading to results which are unexpected from the usual point of view.

The Calculations Of Oscillator Strengths And Transition Probabilities For Atomic Fluorine, Gülteki̇n Çeli̇k, H. Şükür Kiliç, Erhan Akin

Turkish Journal of Physics

Oscillator strengths for transitions between individual lines belonging to some doublet and quartet terms, and multiplet transition probabilities of atomic fluorine have been calculated using weakest bound electron potential model theory (WBEPMT). In the determination of relevant parameters, we employed numerical non-relativistic Hartree-Fock (NRHF) wave functions for expectation values of radii and the necessary energy values have been taken from experimental energy data in the literature. Oscillator strengths and transition probabilities obtained in this work have been compared to experimental and theoretical values given in the literature.

Modulated Photoconductivity Studies Of A-As_2se_3 Thin Films, Ruhi̇ Kaplan

Turkish Journal of Physics

Modulated photocurrent measurements in amorphous arsenic triselenide (a-As_2Se_3) is reported. Particular focus is paid towards photocarrier lifetimes as a function of temperature, and applied electric field (i.e. dc) were determined by using the quadrature frequency-resolved spectroscopy method. The activation energy from the photocurrent as a function of temperature was determined to be about 125 meV for a constant illumination intensity of 2.3 mW. Its value was found to be almost independent of the applied electric field. The exponent \nu in the power law relationship (I_{ph} \propto G^v) between generating flux and photocurrent was obtained under different electric fields. The electric …

Electrical Switching Behaviour In Lead Phosphovanadate Glasses, B. Sujatha, C. Narayana Reddy

Turkish Journal of Physics

Electrical switching behaviour of lead phosphovanadate glasses were studied by determining the current-voltage characteristics. All the investigated glasses exhibit the dependence of threshold voltages on temperature, thickness and composition. Below holding current the I - V characteristics obey Ohms law followed by a negative resistance region where the bulk behaviour dominates and at higher values of current the samples goes to a low resistance state. The studied glasses exhibit memory type switching. It is suggested that the initial switching and channel formation are due to electronic, while thermal effects dominate in the formation of channels.

Cover And Contents

Turkish Journal of Physics

No abstract provided.

Pseudopotential-Based Full Zone K . P Technique For Indirect Bandgap Semiconductors: Si, Ge, Diamond And Sic, Ceyhun Bulutay

Turkish Journal of Physics

The k . p is a versatile technique that describes the semiconductor band structure in the vicinity of the bandgap. The technique can be extended to full Brillouin zone by including more coupled bands into consideration. For completeness, a detailed formulation is provided where the associated k . p parameters are extracted from the local empirical pseudopotential method in the form of band edge energies and generalized momentum matrix elements. We demonstrate the systematic improvement of the technique with the proper choice of the band edge states for the group-IV indirect bandgap semiconductors: Si, Ge, diamond and SiC of the …

A Detailed Ensemble Monte Carlo Study Of The Effect Of Quantum Well Width On Quantum Well Infrared Photodetector Characteristics, Sema Memi̇ş, Oray Orkun Cellek, Umut Bostanci, Mehmet Tomak, Cengi̇z Beşi̇kçi̇

Turkish Journal of Physics

We present a simulation based investigation of the dependence of the device characteristics on the quantum well width in AlGaAs/GaAs quantum well infrared photodetectors (QWIPs) through the ensemble Monte Carlo technique. The simulations on two different standard Al_{0.3}Ga_{0.7}As/GaAs QWIPs with quantum well widths of 36 and 44 Å have shown that the gain in the former is considerably higher, which is due to much longer lifetime of the photoexcited electrons as a result of lower capture probability in the device. We discuss this observation by the investigation of the electron scattering rates in these structures through realistically evaluated scattering mechanisms …

The Symmetric Teleparallel Gravity, Muzaffer Adak

Turkish Journal of Physics

We study symmetric teleparallel (STP) gravity model, in which only spacetime non-metricity is nonzero. First we obtain STP equivalent Einstein-Hilbert Lagrangian and give an approach for a generic solution in terms of only metric tensor. Then we obtain a spherically symmetric static solution to the Einstein's equation in STP space-time and discuss the singularities. Finally, we study a model given by a Lagrangian 4-form quadratic in non-metricity. Thus, we seek Schwarzschild-type solutions because of its observational success and obtain some sets of solutions. Finally, we discuss physical relevance of the solutions.

Degenerate Spin Structures And The Lévy-Leblond Equation, Teki̇n Dereli̇, Şahi̇n Koçak, Murat Li̇moncu

Turkish Journal of Physics

Newton-Cartan manifolds and the Galilei group are defined by the use of co-rank one degenerate metric tensor. Newton-Cartan connection is lifted to the degenerate spinor bundle over a Newton-Cartan 4-manifold by the aid of degenerate spin group. Levy-Leblond equation is constructed with the lifted connection.

Explicit Realization Of Pseudo-Hermitian And Quasi-Hermitian Quantum Mechanics For Two-Level Systems, Ali̇ Mostafazadeh, Seher Özçeli̇k

Turkish Journal of Physics

We give an explicit characterization of the most general quasi-Hermitian operator H, the associated metric operators \eta_+, and \eta_+-pseudo-Hermitian operators acting in C^2. The latter represent the physical observables of a model whose Hamiltonian and Hilbert space are respectively H and \C^2 endowed with the inner product defined by \eta_+. Our calculations allows for a direct demonstration of the fact that the choice of an irreducible family of observables fixes the metric operator up to a multiplicative factor.

Infinite-Hamiltonian Structures Of The Riemann Equation, Refi̇k Turhan

Turkish Journal of Physics

We give two distinct infinite-Hamiltonian representations for the Riemann equation. One with first order Hamiltonian operators and another with third order-first order Hamiltonian operators. Both representations contain an arbitrary function of the dynamical variable. We prove that all the Hamiltonian operators of the Riemann equation are mutually compatible.

Non-Commutative And Non-Anticommutative Supersymmetric U(1) Gauge Theories, Kayhan Ülker

Turkish Journal of Physics

We introduce a parent action for component fields of N=1 supersymmetric U(1) gauge theory in four dimensions which generates both the original and the (s-) dual supersymmetric actions. By using the noncommutative and nonanticommutative deformations of this theory we propose the corresponding parent actions as generalizations of the ordinary case. We then show that duality symmetry under the interchange of fields with duals accompanied by the replacement of the noncommutativity and nonanticommutativity parameters in a suitable way.

Cover And Contents

Turkish Journal of Physics

No abstract provided.

Performance Modeling Of Explosively Actuated Devices, Adam M. Braud

LSU Master's Theses

Explosively actuated devices (pin pullers, cable cutters, valves, etc) are used extensively to perform critical functions for aerospace, industrial, and defense related applications. The failure of these devices have led to a greater effort to quantify device design and performance. This thesis describes the actuation process of an explosively actuated valve, including: 1) the burning of the solid explosive HMX (C₄H₈N₈O₈) and production of its high pressure gas products, 2) the mass transfer of gas products through an actuator to an expansion volume including choked flow effects, 3) the resulting piston motion …

Luminous Light, Angela Breitbach

Graduate Research Papers

Every school is searching for the key to a more successful curriculum, a curriculum that allows for quality learning and useful applications, a curriculum that will allow their students to grow into thinkers and problem solvers. The use of inquiry and constructivist based teaching methods seem to be the key to this type of curriculum. These ideas allow for better understanding of the concepts because the concepts are explored in a hands-on, minds-on setting fostering conceptual understanding as opposed to memorization. This also allows the concepts to be applied to different situations.

Constructivist Education : Exploring The Constructivist Theory And No Child Left Behind To Develop An Effective Kindergarten Program, Leigh M. Siegert

Graduate Research Papers

This paper is a literature review of Constructivist Education Theories and how they can be incorporated into a No Child Left Behind (NCLB) classroom. The focal point of this paper will be the theories of Constructivist Education. In addition, will be discussed, the benefits of and problems concerning Constructivist Education. Also, guidelines for incorporating Constructivist Education into a NCLB classroom will be established. The conclusion of this paper will share which theories work and which do not. Also, recommendations for additional research are included.

Critical Elements For Leading Secondary Schools, Darci J. Wagner

Graduate Research Papers

Eleanor Roosevelt once said, "living and learning must go hand in hand." I cannot remember a time in my life when this was not true. As a child, school was always a positive experience for me. I loved the challenge of mastering new skills. As I progressed through high school and college, I had the opportunity to develop my thinking and reasoning skills through challenging courses taught by master teachers. These teachers served as role models for me, displaying dedication and passion for their subject matter as well as their students.

Reaching Older Less Proficient Readers With Books Suggested In A Standard Bibliography, Sandra E. Antons

Graduate Research Papers

With emphasis on improving reading scores from No Child Left Behind legislation to local district and local building goals, is there a bibliographic source of titles to help engage less proficient readers?

The purpose of this study was to determine if the school library media specialist can rely upon a bibliographic source of books for beginning readers to make appropriate suggestions of titles to read by less proficient third grade readers at Strawberry Hill Elementary School, Anamosa Community School District, Anamosa, Iowa.

This study was conducted as an ethnographic study. Ten students were selected to participate if: they scored at …

How Jesse Cosby Relates To The History Of Leisure And Youth Services In Black Hawk County, Jesse Clinton Henderson

Graduate Research Papers

Today Black Hawk County seems to have a number of growing problems in the African American community high crime, alcohol and drug abuse, violence , high school drop-outs, teen pregnancies, and civil unrest. Much of this seems to be attributed to a lack of participation in positive leisure, recreation, and youth activities in the African American Community.

There has always been a problem in the African American community when it comes to participation in leisure and recreational activities. Jesse Cosby recognized this problem and tried to encourage many African American youth to participate in square dancing, tennis, golf, baseball, ice …

Effects Of External Rewards On Elementary Students' Motivation To Read Independently, Benjamin David Olsen

Graduate Research Papers

In an age of increased accountability, even down to how well, and how much, students read independently, teachers are looking for ways to motivate students to read. One popular way schools and teachers have looked to increase motivation is with reading incentive programs. Despite this widespread enthusiasm for such programs there has not been solid, replicable research that has supported the continued use of incentive programs to increase students' future motivation to read. This study examined how a reading incentive program affected students' motivation and attitudes toward reading and the time they spent reading. Research was guided by the following …

Suggested Core Materials For Early Childhood Programs, Erin Feingold

Graduate Research Papers

The purpose of this project was to examine current available resources related to emergent literacy in order to create a core list of literature for early childhood center libraries. "Research suggests that the foundation for academic success is laid well before a child enters the public schools" (Smith, Fairchild, and Groginsky, 1997, p. ix). The researcher described past and present Federal initiatives that support these efforts. Current curriculum guidelines and recommendations from national organizations for early childhood learning centers were examined to determine what resources were needed to provide a framework for learning. Studies examined emphasized that exposing children to …

Mcd And Magnetization Studies On Nifb/Nifz Minus Molybdenum Iron Protein From Azotobacter Vinelandii, Marcia S. Cotton

LSU Master's Theses

This study reports a characterization of the iron-sulfur clusters of the MoFe protein expressed by the nifBnifZ deletion strain of A. vinelandii. VT-MCD spectroscopic and magnetization analysis of as-isolated ΔnifBΔnifZ MoFe protein were undertaken. VT-MCD spectra of as-isolated ΔnifBΔnifZ MoFe protein contains bands remarkably similar to those seen in as-isolated ΔnifH MoFe protein, assigned to arise from an [4Fe-4S]⁺ cluster. The low-temperature magnetization curve of as-isolated ΔnifBΔnifZ MoFe protein reveals the MCD spectra bands stem from an S = ½ spin system with diamagnetic contributions of some other species. As-isolated ΔnifBΔnifZ MoFe protein is compared with as-isolated ΔnifH MoFe …

Agriscience Program - Using The No Child Left Behind Principles Of Education, Tiffany Ann Popps

LSU Master's Theses

The purpose of this study was to determine the extent of use of the eight educational principles included in the No Child Left Behind act (NCLB) by currently employed Agriscience teachers in Louisiana. Specific objectives formulated to guide the research were to describe: 1) Louisiana’s Agriscience teachers on selected demographics; 2) professional activities of Louisiana’s Agriscience teachers; 3) how often Louisiana’s Agriscience teachers ascribe to the NCLB principles; 4) determine if a relationship exist between the NCLB principles and selected demographics and, finally, 5) determine if a relationship exist between the NCLB principles and selected professional activities of Louisiana’s Agriscience …

Index Future Pricing Under Imperfect Market And Stochastic Volatility, Wei-Hsien Li

LSU Master's Theses

Financial markets in emerging countries are volatile and imperfect, so pricing model under traditional perfect-market frameset may not give reliable price of financial derivatives. The most famous pricing model for stock index future is the cost of carry model. The mis-pricing of cost of carry model inspires lots of following researches. Even transaction costs, dividends, stochastic interest rate, stochastic volatility, market imperfection, and other factors are considered, we still do not obtain a model price consistently better than cost of carry model. But these researches offer important insights, for example, the market needs time to mature and the more complex …

Space-Time Block Coding For Multiple Transmit Antennas Over Time-Selective Fading Channels, Ioannis Erotokritou

LSU Master's Theses

The last decade we have witnessed an extraordinary growing interest in the field of wireless communications. Wireless industry has recently turned into a technology known as Multiple-Input Multiple-Output (MIMO) to minimize errors and optimize data speed. This is done by using multiple transmit and receive antennas, as well as appropriate space-time block code techniques. Due the fact that time-selective fading channels exist, the assumption that the channel is being static over the length of the codeword does not apply in this thesis. The channel state varies over the number of signal intervals, and in such case the orthogonality of the …

Discourse On The Interface Of Matheatics And Physics: A Panel Discussion Sponsored By Dit And The Ria., Brendan Goldsmith

Articles

No abstract available

The Asymptotics Of Neutral Curve Crossing In Taylor–Dean Flow, C. P. Hills, A. P. Bassom

Articles

The fluid flow between a pair of coaxial circular cylinders generated by the uniform rotation of the inner cylinder and an azimuthal pressure gradient is susceptible to both Taylor and Dean type instabilities. The flow can be characterised by two parameters: a measure of the relative magnitude of the rotation and pressure effects and a non-dimensional Taylor number. This work considers the small gap, large wavenumber limit for linear perturbations when the onset of the Taylor and Dean instabilities is concurrent. A consistent, matched asymptotic solution is found across the whole annular domain and identifies five regions of interest: two …