Digital Commons Network^™

Cofe2o4 Nanostructures With High Coercivity, J S. Jung, J H. Lim, K H. Choi, S L. Oh, Y R. Kim, S H. Lee, D A. Smith, K L. Stokes, L Malkinski, C J. O'Connor

Physics Faculty Publications

Nanometer-sized ferrite magnetic materials are the subject of intense research interest due to their potential applications in high-density magnetic information storage. One of the most explored ferrite materials is the cobalt ferrite (CoFe2O4).. We have synthesized cobalt ferrite nanowires using cobalt ferrite nanoparticles in a porous anodic alumina template (AAT). The process of embedding ferrimagnetic particles into the pores was assisted by the magnetic field of a permanent magnet placed in vacuum directly under the substrate. Particles synthesized in the template were subsequently annealed at 600 °C for 2 h in Ar gas forming arrays of cobalt ferrite nanowires inside …

Large Plasma-Edge Broadened Magneto-Optic-Polar-Kerr-Effect-Based Broadband Incoherent Detection Of Terahertz Spectral Frequencies, A. De, A. Puri

Physics Faculty Publications

A magneto-optic Kerr effect (MOKE)-based spectroscopic technique is proposed in the terahertz regime. This method relies on very large reflection edge splitting effects, which occur when the cyclotron frequency (CF) is of the same order of magnitude or greater than the plasma frequency. In the event of a very large reflection edge split, the Kerr rotation (KR) no longer occurs at the plasma edge, but instead occurs at Re(ε₊ε₋) ≈ 1, within the macroscopic framework of the Drude model. This implies that one can control the spectral occurrence of the MOKE resonance, simply by tuning …

Licensing And Discipline Of Fiscal Professional In The State Of Florida: Attorneys, Certified Public Accountants, And Real Estate Professionals, Debra Moss Curtis

Nova Law Review

No abstract provided.

Bgsu Graduate College 2005-2006 Catalog, Bowling Green State University

Course Catalogs

Bowling Green State University graduate catalog for 2005-2006.

Valuing And Nurturing Multiple Intelligences In Legal Education: A Paradigm Shift, Kristen A. Dauphinais

Washington and Lee Journal of Civil Rights and Social Justice

No abstract provided.

Pascal Was No Fideist, David Baggett

The Asbury Journal

No abstract provided.

On Banach Lattice Algebras, Ayşe Uyar

Turkish Journal of Mathematics

In this study, without using the assumption a^{-1} > 0, it is shown that E is lattice - and algebra - isometric isomorphic to the reals R whenever E is a Banach lattice f-algebra with unit e, e = 1, in which for every a > 0 the inverse a^{-1} exists. Subsequently, an alternative proof to a result of Huijsmans is given for Banach lattice algebras.

Check Only One: M/F/Other, Julie Shapiro

Faculty Articles

In this extremely brief essay, the author questions Lawrence Summers' generalizations about women in science. We live in a world of uncertainty about the boundaries of gender. Transgendered and intersexed individuals challenge us to step away from strict categories of men and women.

Acer 2004-2005 Annual Report, Australian Council For Educational Research (Acer)

ACER Annual Reports

No abstract provided.

Acer 1980-2004 Annual Report Index, Margaret Findlay

ACER Annual Reports

No abstract provided.

Science Instruction And English Language Learners, Dekey P. Lama

Graduate Research Papers

More students with limited English proficiency attending U.S. public schools merits a reassessment of science teaching approaches so such students can succeed in these areas. Federal and state governments have initiated steps which allow school districts to lead in the development of quality science education programs to assist English language learners in science learning. Successful science teachers develop courses employing research-based curricula with relevant content and recognition of students' cultures, and English language learning needs and styles. Students' interaction with content and materials in the classroom, especially those based on related local problems, encourages their success in comprehending the relevance …

Assessing The Accuracy Of Respondents Reports Of The Location Of Their Home Relative To A National Forest Boundary And Forest Cover, John D. Baldridge, James T. Sylveste, William T. Borrie

Society and Conservation Faculty Publications

This paper assesses the accuracy of responses to a question that asks the location of respondents’ homes relative to a National Forest boundary. The analysis also assesses the accuracy of respondent reports on forest cover in the area surrounding their home. We find non-ignorable error in the responses to both questions. The remainder of this paper is divided into three sections. First, the methods used for this study are described as are limitations of the study. Second, we illustrate the study’s results. Finally, we discuss our results and conclusions.

Impact Of The Arts On Students' Learning, Sook Ming Kong

Graduate Research Papers

The role of the arts has been undermined for a long time in the school curriculum. Recently, a group of researchers embarked on a number of studies investigating the positive effects which the arts has on students' performance in school. The results provide an insight into the fact that students who have high involvement in the arts perform better on a variety of academic measures such as grades in English, and scores on standardized tests.

The studies also provide evidence that participation in the arts helps to reduce the drop- out rate of at-risk students and those in low SES …

Fourth Grade Student Achievement On Math Standardized Tests In The Absence Of A Math Curriculum, Trista Manternach

Graduate Research Papers

Throughout the last few decades the importance of reading instruction has been the focus for schools and school districts across the nation. At Lincoln Elementary School in Waterloo, Iowa the focus has been no different. However, in the last two years, academic achievement in the area of math has become as important as reading with the advent of No Child Left Behind.

Although teachers were told that math was important, they lacked a required curriculum until a year after math became a focus of student achievement. The purpose of this study is to answer the following question: Did the absence …

Writing In Math And Distributive Learning In Math Problem Solving, Mary Jo Metz

Graduate Research Papers

Many teachers, parents and students have questions about single sex classrooms. Are there gender based strategies that can be used in single sex classrooms and coed classrooms?

The purpose of this study was to investigate a possible difference in the perceptions of boys and girls in their math problem solving ability, and to determine if writing in math and distribution of curriculum would be effective strategies in math problem solving. The researcher conducted a classroom study to determine the effects of writing in math and compare the impact on males and females. In addition, another study investigated the distribution of …

How Can Technology Assist In The Effectiveness Of After School Programs?, Imani A. Phillips

Graduate Research Papers

This review examines how technology assists in the effectiveness of learning in after-school programs. There are different types of after school programs available to parents with school-age children. Results describe the use of technology and the influence it has on the learning ability of students who are at risk. Meaningful, engaged learning can be promoted through the use of technology. Experts in the field state that technology facilitates learning by addressing the need of the individual learner. This review's conclusions indicate that a learning community can encourage personalized learning activities, collaboration, and motivation. The integration of effective technology into a …

A Distributed Strategies Approach To Teaching Multiplication And Problem Solving, Holly K. Ritter

Graduate Research Papers

Multiplication and problem solving are two fundamental math topics in third grade. The expectation is that students will enter fourth grade with a strong foundation in multiplication and problem solving, which was established in third grade. This research project implements a variety of multiplication and problem solving strategies, in conjunction with a "distributed" or "spaced" curriculum style. Distributed teaching means multiplication is introduced and practiced on a regular basis. This project addresses the question; . Does a distributed curriculum in multiplication and problem solving improve students' understanding of multiplication and problem solving and improve students' assessment results?

Petrography And Petrology Of The Calc-Alkaline Sarıhan Granitoid (Ne Turkey): An Example Of Magma Mingling And Mixing, Zafer Arslan

Turkish Journal of Earth Sciences

There are many acidic intrusions of varying age in the northern and southern zones of the eastern Pontides, NE Turkey, and the Sarıhan Granitoid is one of these. The Maastrichtian Sarıhan Granitoid was emplaced into the pre-Permo-Carboniferous Pulur Massif, generally comprising medium-grade metamorphic rocks; the Liassic Hamurkesen Formation, that begins with the Dikmetaş conglomerate and continues upward into volcano-sedimentary rocks; and the Malm-Lower Cretaceous Hozbirikyayla Formation, comprising limestone and sandy limestones. The Sarıhan Granitoid crops out in an area of approximately 40 km2, has an ellipsoidal shape, and comprises mainly quartz monzodiorite, granodiorite and lesser quartz diorite. The pluton contains …

Investigation Of Safe And Sustainable Yields For The Sandy Complex Aquifer System In The Ergene River Basin, Thrace Region, Turkey, Şebnem Ökten, Hasan Yazicigi̇l

Turkish Journal of Earth Sciences

This study aims to determine the safe and sustainable yields for the Sandy Complex aquifer system in Ergene River basin in northwestern Turkey. A numerical ground-water flow model was developed for the Sandy Complex aquifer, which is the most productive and the most widespread aquifer in the basin. The finite difference ground-water model was used to simulate steady and unsteady flow in the aquifer. The model was calibrated in two steps: a steady-state calibration, by using the observed ground-water levels of January 1970; then a transient calibration, by using the observed ground-water levels for the period of January 1970 and …

Unsteady Flow Of A Dusty Conducting Fluid Between Parallel Porous Plates With Temperature Dependent Viscosity, Hazem Ali Attia

Turkish Journal of Physics

This paper studies unsteady laminar flow of dusty conducting fluid between parallel porous plates with temperature dependent viscosity. The fluid is acted upon by a constant pressure gradient and an external uniform magnetic field is applied perpendicular to the plates. The parallel plates are assumed to be porous and subjected to a uniform suction from above and injection from below. The viscosity of the fluid is assumed to vary exponentially with temperature. The governing nonlinear partial differential equations are solved numerically and some important effects for the variable viscosity and the uniform magnetic field on the transient flow and heat …

Magic Gold Nanotubes, R. Tuğrul Senger, Sefa Dağ, Sali̇m Çiraci

Turkish Journal of Physics

In recent ultra-high-vacuum transmission-electron-microscopy experiments evidence is found for the formation of suspended gold single-wall nanotubes (SWNTs) composed of five helical strands. Similar to carbon nanotubes, the (n,m) notation defines the structure of the gold SWNTs. Experimentally, only the (5,3) tube has been observed to form among several other possible alternatives. Using first-principles calculations we demonstrate that gold atoms can form both freestanding and tip-suspended, chiral, single-wall nanotubes. Although freestanding, infinite (5,5) tube is found to be energetically the most favorable, the experimentally observed (5,3) tube, suspended between two tips, corresponds to a local minimum in the variation of string-tension …

A Theoretical Study On Silicon And Iii-V Compound Nanotubes, Engi̇n Durgun, Sali̇m Çiraci

Turkish Journal of Physics

In this paper we present a theoretical study on single-wall silicon and III-V compound nanotubes. First principles plane wave calculations within density functional theory are used to predict energetics and electronic structures of armchair and zigzag nanotubes. The stability of tubular structures is further investigated at finite temperature by ab initio molecular dynamics calculations. Our results indicate that (n,0) zigzag and (n,n) armchair single-wall Si nanotubes are stable for n >= 6. Mechanically, the Si nanotubes are radially soft, however they are strong against axial deformations. Electronic analysis showed that zigzag nanotubes are metallic for n Keywords: silicon, nanotube, first …

Electrical Properites Of Superconducting Cross - (Nano) Whiskers Junction, Serdar Altin, Eyüphan Yakinci, Yakup Balci, M. Ali̇ Aksan

Turkish Journal of Physics

Bi-2212 superconducting single crystal (nano) whiskers have been fabricated by annealing a melt-quenched (glass) Bi_3Sr_2Ca_2Cu_3O_x precursor. A couple of (nano) Whiskers obtained were placed crosswise on a YSZ single crystal substrate and then heat treated at 830 C for 25 minute to form nano-scale junction. The T_c of each nano-whisker was found to be 85 K and the critical current density, J_c, of the whiskers was calculated to be 1177 Acm^{-2} at zero field. The I-V characteristics of the nano-junction at 30 K were found to show a multiple-branch structure, which is the main behavior of the Josephson junction.

Detailed Geochronology Of The Mississippi Sound During The Late Holocene, Brian Velardo

LSU Master's Theses

The Mississippi Sound is a bar-built estuary that parallels the Mississippi Coast. It is bounded on the west by the St. Bernard lobe of the Mississippi River delta, Mobile Bay to the east, and the Gulf Coast barrier islands to the south. Few studies have investigated the late Holocene history of Mississippi Sound. In the present study, historical deposition in the Sound has been investigated using core data collected throughout the western, central, and eastern Mississippi Sound. The sediments within Mississippi Sound compose a complex depositional system that have responded to changes in sea level and hydrodynamics. Two factors that …

A Comparison Of The Scientific Achievement Of Students Using Ited, Itbs, And District-Developed Performance Assessments, Marcia Ruth Powell

Graduate Research Papers

The West Delaware school district is located in northeast Iowa, halfway between Waterloo and Dubuque along highway 20. The district has approximately 650 students in grades 9-12 and employs 48 teachers. Four of these teachers teach science full-time, and two teachers from other departments pick up extra courses. The 150+ 8th grade students represented in this study were taught by two different science teachers, who also teach 7th grade science. 8th grade science is taught in a 45 minute day for the entire year, while 9th and 10th graders are taught on a 90 minute block schedule, with each class …

An Inquiry Of Plants, Brad D. Wymer

Graduate Research Papers

This project has been completed to improve the quality of instruction of the biology students at Iowa City West High School. A curricular unit covering plants has been designed keeping in mind the National Science Education Standards, the curricular benchmarks established by the Iowa City Community School District and the current research on how people learn. Applicable research that supports the inquiry approach to teaching biology, an outline of the daily events that occur during the course of the curricular unit, and examples of the use of inquiry teaching styles are included throughout this work.

Small Group Math Instruction : Is It Beneficial In A Seventh Grade Classroom?, Joellen A. Schwab

Graduate Research Papers

Is small group math instruction a beneficial practice in a regular seventh grade classroom? Two teachers and approximately 500 students were involved in a study to address that question. The study occurred from the fall of 2002 through the fall of 2004 at Hoover Middle School in Waterloo, Iowa. Before small group math instruction was implemented, students averaged approximately 61 % on chapter tests, while after its implementation students were scoring an average of 76%. Procedures included both pre and post test data analysis.

Small groups were created based on student achievement. There were three main groups: low, middle, and …

Utilizing Geographic Education Research To Increase Learning In A Seventh Grade Geography Course, Eric Uwe Schulz

Graduate Research Papers

The purpose of this paper is to review the current condition of geography education, to examine current research in geographic education, and to create a plan to improve student learning in my classroom. It outlines the re-emergence of geography education in the secondary setting and considers the quality of the national geography standards. A descriptive narrative of current geographic education research is used to determine best instructional practice and is aligned with Colorado's Model Geography Standards to link the current research with curriculum. The results of the research are then used to evaluate and improve the curriculum, pedagogy, and assessment …

Peer Tutoring And Technology Integration : You Too Can Make It Happen!, Brandy Smith

Graduate Research Papers

Technology is motivating to students and brings with it a sense of empowerment. This article looks at a successful model of technology integration. This model comes in the form of an after-school club called the "Tech Club" built upon a peer tutoring model. A lead teacher trained third grade student leaders, or the "Tech Kids" to facilitate technology "how-to" sessions in their classrooms. After learning technology basics, this core group of Tech Kids visited different third grade classrooms to teach their peers this magic. This article explains how this peer tutoring model greatly empowered these third grade students and allowed …

Implementing Distributed Practice, Christi Sires

Graduate Research Papers

Distributed practice is a daily routine where students are exposed to a math problem, asked to solve it, and then explain how they solved it. The idea of short intervals of instruction over a period of time can have remarkable results. This instructional strategy has been cited in numerous research studies, an indication that it may be successful in helping students better understand how they can solve mathematical problems.

This study will try to determine the growth of Jewett Elementary's first grade students as they were exposed to distributed practice over a period of time from first to second quarter …