Digital Commons Network^™

Research In Economic Education: Five New Initiatives, Michael K. Salemi, John J. Siegfried, Kim Sosin, William Walstad, Michael Watts

College of Business: Faculty Publications

Research is essential for improvement in teaching and learning economics. William E. Becker et al. (1991) called for new research on the relative merits of multiple-choice and essay tests, on the lasting effects of course work in economics, and on the effects of instructors, instructional techniques, and new technologies on student learning. To respond to the call, the Committee on Economic Education (CEE) of the American Economic Association recruited Robin Bartlett, William Becker, W. Lee Hansen, Peter Kennedy, and the authors to organize a conference that would jump-start new research projects.

A Study Of Unbalance In Hydraulically Driven Fan Systems, Collin Sirco

Theses

A study has been conducted to investigate unbalance in Valeo hydraulically driven fan systems (HDFS). The principles of balancing have been modeled and applied to HDFS assemblies. The process from the initial build of the part during the molding process to the final completed assembly has been evaluated to determine how to best decrease unbalance in a manufacturing environment. The areas that were deemed to need significant improvement are the couple unbalance specification and the act of inserting balls into the fan groove to correct for unbalance. A new specification of 48 kg-mm2 was recommended and has been introduced to …

Attitudes, Knowledge, And Implementation Of Biotechnology And Agriscience By West Virginia Agricultural Education Teachers, Jason E. Hughes

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to provide information on the attitudes toward and knowledge level of biotechnology and agriscience as well as activities conducted which demonstrate implementation of biotechnology and agriscience by West Virginia Agricultural Education teachers.;Data was collected via a questionnaire. Knowledge level, teaching methods used, attitudes of the subject and teaching responsibilities, barriers to teaching, and preferred information sources of biotechnology and agriscience were the major parts. Demographics and level of science knowledge were other parts of the questionnaire.;A major finding of the study was that West Virginia agricultural education teachers possess a positive attitude towards biotechnology, …

Essays On The Restructuring Of The Electricity Industry In The United States, Vladimir V. Starkov

Graduate Theses, Dissertations, and Problem Reports (ETD)

The dissertation explores several issues that arise from the restructuring of the American electricity industry. The first chapter discusses economic reasons for deregulation, describes possible deregulation scenarios, and outlines potential pitfalls of deregulation.;Chapter 2 develops a forecast of electricity prices after the transition to retail competition. The equilibrium prices are found from an n -firm Cournot model of oligopoly with non-uniform marginal costs. It is further shown how the translog cost function can be used in the traditional solution of the Cournot model. Major empirical findings include marginal cost functions of every producer and forecast prices of electricity after deregulation …

Nonlinear Transient And Steady State Analysis For Self-Excited Single-Phase Synchronous Reluctance Generator, Jingdong Chen

Graduate Theses, Dissertations, and Problem Reports (ETD)

With today's trend for distributed generation and the need for alternative and renewable energy sources, self-excited induction and synchronous reluctance generators have attracted more attention for wind, tidal and hydro power generation applications. Compared to synchronous and DC generators, they have the advantages: they are brushless, they are robust, they do not need DC excitation and they are relatively low cost.;Compared with SEIG, the self-excited reluctance generator (SERG) not only has the advantages of simplicity and ruggedness, but can also have enhanced steady-state characteristics and high efficiency over a wide range of operation. Moreover, its output frequency is determined only …

Space-Time Block Coding With Imperfect Channel Estimates, Dirk Alan Baker

Graduate Theses, Dissertations, and Problem Reports (ETD)

Space-time block coding (STBC) is a method that combines diversity and coding without a corresponding increase in bandwidth and with minimal complexity in the receiver. The performance of STBC with perfect channel state information (CSI) being available at the receiver has been shown to provide approximately 10 dB of improvement over uncoded transmission in Rayleigh fading when using Quadrature Phase Shift Keying (QPSK) at a bit error rate of 10 -3. In this thesis, the performance of space-time block codes is analyzed when the receiver must rely on noisy, or imperfect, estimates of the channel. It is shown that for …

Developing And Evaluating A Program Of Evangelism For The Local Church, John W. Ott

Doctoral Dissertations and Projects

The purpose of this project is to develop and test a training program and a training manual that would effectively mobilize a large local church congregation for personal evangelism. To accomplish this, the thesis will strive to establish the mission of evangelism and how it relates to the problems facing the local church in this vital area of responsibility. Out of this mission, the thesis will identify and discuss some common misconceptions of evangelism. It will also set forth the biblical mandate of evangelism and research the New Testament model of evangelism both in the life of Christ and in …

Mathematics & Statistics Newsletter May 2001, Rit Department Of Mathematics And Statistics

RIT Digital Archives

No abstract provided.

Feminist Science Studies At German Universities - A First Account, Smilla Ebeling, Helene Götschel

Journal of International Women's Studies

From the Introduction:

Feminist science studies, which do not have a unified term so far in the German debate, regard mathematics, science and technology within their historical and social context (Heike Kahlert 1996, Heike Wiesner 1994). This critical contextualization of math-natural scientific thinking and acting is not regarded as a task of the corresponding disciplines but is linked to other disciplines like the history and philosophy of science, didactics or science and technology studies. Therefore, feminist science studies cannot be worked out within mathematics, science and engineering at all because they do not make sense within the scientific self-understanding (Margarete …

The Next Wave In Erp Implementation, Keng Siau, Y. Tian

Research Collection School Of Computing and Information Systems

Although the benefits of ERP are obvious, the risks and costs associated with it are very high. Some problems in implementing ERP system are documented, but the real challenge comes from the Internet and E-business. ERP is an enterprise wide system whose purpose is to achieve internal efficiency, while E-business cuts across different enterprises and extends the individual value chain into an Internet based, dynamic process aimed at maximizing external efficiency. To survive the E-business challenge, the arguably single, and also the best, solution for ERP systems is to integrate with E-business applications, which we call ERP II. By properly …

Groundwater Study Of The Piawaning Townsite, Russell John Speed, Ali S. Mahtab

Resource management technical reports

A groundwater study was carried out in and around the townsite of Piawaning. It aimed to accelerate the implementation of effective salinity management options. The study consisted of a drilling investigation, expansion of a piezometer network, a pumping test and a flood risk analysis.

Latino Children's Kindergarten Entry: Views Of Parents And Teachers, Shanda Stephens

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined parental and teacher expectations of kindergarten readiness of Latino children. The perceptions of Latino mothers, Latino fathers, and kindergarten teachers were analyzed and compared. Specifically, parents' and teachers' responses were compared in three areas: perceptions of what parents can do to prepare children for kindergarten, priorities for requisite kindergarten entry skills, and rankings of the importance of specified skills to be emphasized in kindergarten. Differences between kindergarten teachers' expectations for nonnative English-speaking children and native English-speaking children were also examined.

The parent sample consisted of 35 Latino mother/father pairs. All were parents of children who entered kindergarten …

Experimental Investigation Of Snapover: The Sudden Increase Of Plasma Current Drawn To A Positively Biased Conductor When Surrounded By A Dielectric, Clint D. Thomson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Snapover is particularly relevant to Earth-orbiting spacecraft powered by high-voltage solar arrays. During snapover, the current collected by a positively biased conductor that is immersed in a plasma suddenly increases when two conditions are met: i) there is an immediately adjacent insulator; ii) the conductor exceeds a positive threshold voltage with respect to the plasma. The enhanced current develops as a consequence of the insulator, either through secondary electron (SE) emission or by material ionization. Experiments were performed to examine snapover onset potential and current collection dependence on conductor and insulator materials, conductor size and shape, sample history, biasing rate, …

Reproductive Allocation And Survival In Grasshoppers: Effects Of Resource Availability, Grasshopper Density, And Parasitism, David Heath Branson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A major challenge in ecology is to understand intraspecific variation in life histories. Variation in resource availability can lead to differences in reproductive allocation and life histories. Grasshoppers are a good organism for the study of variation in life histories, since they exhibit life history plasticity in response to biotic and environmental factors. An optimality model for grasshoppers was developed that predicts optimal total allocation to reproduction and optimal effort-per-offspring as functions of resource availability and mortality. Relative allocation to reproduction is predicted to increase with resource availability, while relative allocation to survival declines. A resource-based trade-off between egg size …

Ecology Of Treeline Whitebark Pine (Pinus Albicaulis) Populations In Central Idaho: Successional Status, Recruitment, And Mortality, And A Spring Temperature Reconstruction From Whitebark Pine Tree Rings, Dana Lee Perkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research investigated the successional status of treeline whitebark pine (Pinus albicaulis) populations on 14 stands in central Idaho and used empirical statistical models to determine the principal factors affecting recruitment and mortality. The longest lived whitebark pines from four additional high-elevation sites were used to develop a tree-ring chronology to reconstruct over 1,000 years of average April-May temperature.

The assessment of stand structures using size-frequency distributions generally provides evidence that treeline whitebark pine populations are currently self-sustaining in areas of low to nonexistent incidence of white pine blister rust (Cronartium ribicola). However the presence of …

Effects Of High Ammonium/Nitrate Ratios On Nitrification And Growth Of Wheat In Hydroponics, Dawn J. Muhlestein

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nitrogen is the only plant nutrient taken up as both a cation (NH₄⁺) and anion (NO₃^-). Nitrate is considered the "safe" form of N and NH/ is generally thought to be toxic, especially at high levels. High NH₄⁺/NO₃^- ratios are thought to be toxic because they result in a rhizosphere pH low enough to damage root membranes, induced cation deficiencies, and build-up of NH3 caused by delayed NH/ assimilation. These factors can be minimized in hydroponic culture. The objective of these studies was to quantify the effects of high …

Structural And Geochemical Analyses Of Disseminated-Gold Deposits, Bald Mountain-Alligator Ridge District, Nevada: Insights Into Fault-Zone Architecture And Its Effect On Mineralization, K. Jill Hammond

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Structural and geochemical analyses of the Top and Casino deposits, Bald Mountain-Alligator Ridge district, Nevada, were conducted to determine how structures affected gold deposition in Carlin-type deposit s. We also examined how permeability changed over time in a fault that cuts siltstone-dominated sedimentary rocks. The association of gold and related arsenic with faults at the margins of a Jurassic pluton and sedimentary rocks suggests that ore fluids migrated along faults and fracture s. Permeability of the faults changed over time within the Casino deposit, where the ore-controlling fault was a distributed conduit in the early stages of mineralization but a …

The Efficacy Of Plant Residue Degradation Products On Phosphorus, Iron, Iodine, And Fluorine Bioavailability To Plants, Cheryl L. Mackowiak

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plant and animal wastes degrade in soils to form relatively stable humified compounds, which form ion complexes that affect the bioavailability of elements in the soil solution. Hydroponic studies with wheat and rice were conducted to characterize the effect of humic acid (HA) on phosphorus (P), iron (Fe), fluorine (F), and iodine (I) bioavailability. Ferrihydrite [Fe(OH)₃] precipitation was greater on root surfaces without HA or synthetic chelates. Oxides such as ferrihydrite strongly adsorb P and provide exchange sites for metals. HA reduced this precipitate and increased P and Fe uptake.

Humic acid had no effect on F toxicity …

Climatology Of Upper Thermospheric Daytime Neutral Winds From Satellite Observations, John T. Emmert

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

We studied the global climatology of mid- and low-latitude F region daytime neutral winds using extensive measurements by the Wind Imaging Interferometer (WINDII) instrument on board the Upper Atmosphere Research Satellite (UARS). Quiet-time winds are mostly poleward and westward during the day, and are generally 5-20 m/s smaller in the longitudinal sector closest to the magnetic pole, compared to longitudinally averaged winds. The pre-noon zonal winds are less westward with increasing solar flux, while the post-noon meridional winds are less poleward. Our quiet-time results are in good agreement with the NCAR Thermosphere-Ionosphere- Electrodynamics General Circulation Model (TIEGCM).

We computed residual …

The Modern Mathematics Classroom: A Collection Of Virtual Manipulatives For Teachers And Students, David Stowell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An important assumption in the implementation of the National Council of Teachers of Mathematics (NCTM) Standards 2000 is that the mathematics classroom is a place where students are actively involved in the learning process. One way to foster such a learning environment is by using manipulatives. By their nature, manipulatives make the learning of mathematics a discovery-based activity. As computer use increases in the classroom, virtual manipulatives will become more important as instructional tools. Virtual manipulatives offer advantages over their traditional versions. Most important is their dynamic nature. Their dynamic capabilities provide two main benefits. First, the number of potential …

The Relationship Of Milk Urea Nitrogen And Dhia Production Variables In Western Commercial Dairy Herds, Rachael G. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Monthly individual cow DHIA test records (approximately 90,000) from 96 Holstein and Jersey herds from Utah, Idaho, and Montana were analyzed used the Mixed procedure in SAS to determine the relationships of milk production parameters to milk urea N (MUN). Records spanned two consecutive years ending December 2000. Means for Holsteins were 34.1 kg/d milk yield, 15.2 mg/dl MUN, 3.18% milk protein, 3.5% milk fat, and 280,000 somatic cell count. Mean MUN for Holsteins was lowest in fall (Oct.-Dec) and highest in winter and spring. Cows with highest milk protein percent (≥ 3.2%) had lowest MUN over all levels of …

Incorporating Technology In Mathematics Education: A Suite Of E-Activities For The Modem Mathematics Classroom, Jennifer E. Youngberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

National studies indicate major deficiencies in students' understanding of mathematics. Research suggests that students tend to view mathematics as a set of computational rules rather than a process of discovery and a tool for problem-solving. Most students fail to grasp the concepts behind the computations.

Technology provides a partial solution to this problem. Over the past decade, computers have emerged as a powerful tool in education. Computers place the control of action in the learning process with the student. They allow students to experiment with, explore, and discover mathematics at their own pace. With computers, students can consider more examples …

Generalized Minimum Penalized Hellinger Distance Estimation And Generalized Penalized Hellinger Deviance Testing For Generalized Linear Models: The Discrete Case, Huey Yan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In this dissertation, robust and efficient alternatives to quasi-likelihood estimation and likelihood ratio tests are developed for discrete generalized linear models. The estimation method considered is a penalized minimum Hellinger distance procedure that generalizes a procedure developed by Harris and Basu for estimating parameters of a single discrete probability distribution from a random sample. A bootstrap algorithm is proposed to select the weight of the penalty term. Simulations are carried out to compare the new estimators with quasi-likelihood estimation. The robustness of the estimation procedure is demonstrated by simulation work and by Hapel's α-influence curve. Penalized minimum Hellinger deviance tests …

Weaving Women’S Studies Into The Institutional Web: A Case Study, Frances Kraljic, Inez Martinez

Journal of International Women's Studies

Kingsborough Community College [KCC], one of six in the City University of New York [CUNY], a University containing eleven senior colleges, a medical and a law school, and a Graduate Center, is the first and only community college in CUNY to have a Women’s Studies [WS] Program. It took a long, long time to obtain this Program, and it has taken multi-faceted efforts to weave it into Kingsborough’s life in such a way as to (thus far) keep it. Because we believe that WS are particularly important at the community college level, we are sharing the story of the development …

Structural Analysis And A Kink Band Model For The Formation Of The Gemini Fault Zone, An Exhumed Left-Lateral Strike Slip Fault Zone In The Central Sierra Nevada, California, Matthew A. Pachell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The structure and regional tectonic setting of an exhumed, 9.3-km long, left-lateral strike-slip fault zone eludicates processes of growth, linkage, and termination for strike-slip fault zones in granitic rocks. The Gemini fault zone is composed of three steeply dipping, southwest-striking, noncoplanar segments that nucleated and grew along preexisting joints. The fault zone has a maximum slip of 131 m and is an example of a segmented, hard-linked fault zone in which geometrical complexities of the faults and compositional variations of protolith and host rock resulted in nonuniform slip orientations, complex interactions at fault segments, and an asymmetric slip-distance profile. Regional …

Sociometric Change As A Function Of Classwide Peer Tutoring, Trina D. Spencer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Classwide peer tutoring (CWPT) procedures have been shown to substantially increase academic performance. Other positive outcomes, incidentally observed, include enhanced prosocial behaviors and increased appropriate interactions among peers. This study examined the direct effects of a CWPT program on peer relations and academic performance. A mixed first- and second-grade general education classroom participated in a CWPT spelling intervention with a comparable control classroom. The study consisted of three phases-Baseline (4 weeks), Intervention (6 weeks), and Follow-up (4 weeks). Dependent measures included sociometric peer rating scales and spelling test scores. Results were analyzed by determining mean change for each participant and …

An Evaluative Argument-Based Investigation Of Validity Evidence For The Utah Pre-Algebra Criterion-Referenced Test, Louise Richards Moulding

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study collected evidence to address the assumptions underlying the use of the Utah Core Assessment to Pre-Algebra (UCAP) to (a) measure student achievement in pre-algebra, and (b) assist teachers in making adjustments to instruction. An evaluative argument was defined to guide the collection of evidence. Each of the assumptions in the evaluative argument was addressed using data from a suburban northern Utah school district. To collect the evidence, test content was examined including item match to course objectives, reliability, and subtest intercorrelations. Analyses of correlations of the UCAP with convergent and discriminant measures were completed using student test data …

The Ticker, April 30, 2001

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.

A Study To Determine The Teacher Education Students Five Year Performances On Praxis Ii Assessment At Morehead State University, Yuliana Susanto

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Vocational Education/Technology by Yuliana Susanto on April 30, 2001.

Asymmetric Nanoscale Switching In Ferroelectric Thin Films By Scanning Force Microscopy, Alexei Gruverman, A. Kholkin, A. I. Kingon, H. Tokumoto

Alexei Gruverman Publications

Scanning force microscopy (SFM) has been used to perform nanoscale studies of the switching behavior of Pb(Zr, Ti)O₃ thin films via the direct observation of their domain structures. The study revealed a significant asymmetry of a switching pattern which is a function of the voltage polarity and original domain structure of individual grains. The phenomenon of asymmetric switching is attributed (1) to the presence of an internal built-in electric field at the bottom interface and (2) to the mechanical stress exerted by the SFM tip. The former effect results in incomplete 180° switching, while the latter effect leads to …