Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (555)
- Physical Sciences and Mathematics (501)
- Social and Behavioral Sciences (459)
- Life Sciences (302)
- Medicine and Health Sciences (292)
-
- Arts and Humanities (196)
- Psychology (175)
- Education (152)
- Chemistry (128)
- Mechanical Engineering (112)
- Environmental Sciences (92)
- Earth Sciences (90)
- Chemical Engineering (85)
- Civil and Environmental Engineering (82)
- Computer Sciences (79)
- Electrical and Computer Engineering (74)
- Materials Science and Engineering (70)
- Physics (67)
- Public Health (62)
- Computer Engineering (55)
- Operations Research, Systems Engineering and Industrial Engineering (54)
- Communication (52)
- Music (52)
- Analytical Chemistry (51)
- Geology (51)
- Nursing (50)
- Rehabilitation and Therapy (50)
- Sociology (49)
- Aerospace Engineering (47)
- Civil Engineering (47)
- Keyword
-
- Mechanical engineering (318)
- Electrical engineering (210)
- Civil engineering (148)
- Clinical psychology (133)
- Computer science (123)
-
- Chemical engineering (121)
- Ecology (79)
- Forestry (77)
- Higher education (77)
- Petroleum engineering (76)
- Aerospace engineering (74)
- Materials science (74)
- Industrial engineering (72)
- Public health (71)
- Behavioral psychology (66)
- Environmental engineering (66)
- Environmental science (64)
- Mining engineering (64)
- Educational psychology (63)
- Developmental psychology (62)
- Educational technology (62)
- Aquatic sciences (60)
- Social psychology (59)
- Machine Learning (58)
- Geology (57)
- Energy (56)
- Animal sciences (52)
- Kinesiology (52)
- Physical education (50)
- Dentistry (49)
- Publication Year
- File Type
Articles 6751 - 6780 of 7646
Full-Text Articles in Entire DC Network
Predicting Habitat Suitability For American Woodcock And Landscape-Level Assessment Of Habitat In West Virginia, Ann Klein Steketee
Predicting Habitat Suitability For American Woodcock And Landscape-Level Assessment Of Habitat In West Virginia, Ann Klein Steketee
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objectives of this study were to (1) develop models to predict potential habitat suitability for woodcock over large geographic areas in West Virginia (Chapter 4), (2) quantify and describe the local and landscape structural components and spatial patterns of woodcock habitat in the state (Chapter 3), and (3) to determine the current suitability and fate of woodcock habitat that was available in the mid-1970's (Chapter 5).;Differences between 165 woodcock flush points and 165 randomly generated points for proportion of 12 land-cover types and 4 metrics describing landscape composition and pattern were compared within 3 elevation groups and 8 spatial …
Seepage Through Longitudinal Drainage Trenches, Benjamin T. Staud
Seepage Through Longitudinal Drainage Trenches, Benjamin T. Staud
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objective of this study was to determine how the longitudinal drain system works under laboratory conditions. In this study, a bench-scale model was constructed to assess the flow patterns caused by a trench drain in a slope. The experimental variables include the trench spacing (w), seepage depth (h), and slope angle (theta). In the experimental program, four values of slope angle, three values of trench spacing and three values of seepage depth were considered. Each experiment was performed twice to ensure that the measurements are reproducible. The soil type for the experimental program was selected on the basis of …
Developing A Framework For Predicting The Impact Of Its/Cvo Technology In Developing Countries, Mazen Turk
Developing A Framework For Predicting The Impact Of Its/Cvo Technology In Developing Countries, Mazen Turk
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study focuses on freight mobility in developing countries. System improvements depend on state of the art technologies to be deployed in the Transportation Infrastructure. Intelligent Transportation Systems and Commercial Vehicle Operation technologies (ITS/CVO) although a significant investment, offer many improvement alternatives. This study develops a framework for predicting the impact of new technologies on the global transportation system in developing countries. This is done in an effort to reduce cost and improve safety, efficiency and level of service.;The task will be divided into three sections. The first will entail looking at prediction from a global perspective. This will specify …
Timing Of Alveolar Cleft Bone Grafting In Maxillary Alveolar Cleft Defects, Richard Morrow Crout
Timing Of Alveolar Cleft Bone Grafting In Maxillary Alveolar Cleft Defects, Richard Morrow Crout
Graduate Theses, Dissertations, and Problem Reports (ETD)
Numerous methods have been attempted to identify the best time for secondary alveolar cleft bone grafting, including chronological age, skeletal age, and dental age. However, few studies have employed objective methods of assessment that would permit statistical analysis. Fifty-nine patients with clefts of the alveolus who acquired secondary alveolar cleft grafts at the Lancaster Cleft Lip and Palate Clinic were studied. A total of 74 affected areas from 15 bilateral and 44 unilateral alveolar cleft patients were available. Timing of the graft was determined utilizing root development of the involved canine, as compared to crown length, from a high quality …
Youth Leadership Life Skills Development Of Participants In The West Virginia 4-H Camping Program, Rebecca Diane Duncan
Youth Leadership Life Skills Development Of Participants In The West Virginia 4-H Camping Program, Rebecca Diane Duncan
Graduate Theses, Dissertations, and Problem Reports (ETD)
Although the development of leadership skills through the 4-H camping program is highly valued, measurement of leadership skill development of West Virginia 4-H camping program participants has been lacking. Thirteen to fifteen year old 4-H members were targeted in this study in order to gather data about leadership development among this age group.;Significant relationships were found between the total YLLSDS score and years of participation in county camp and receiving the Spirit of Camp Award. Participants also reported higher leadership scores if they had served as a Chief or Sagamore of their 4-H tribe, if they were female, and if …
Predicting Permeability And Flow Capacity Distribution With Back-Propagation Artificial Neural Networks, Alexis Jose Riera
Predicting Permeability And Flow Capacity Distribution With Back-Propagation Artificial Neural Networks, Alexis Jose Riera
Graduate Theses, Dissertations, and Problem Reports (ETD)
The prediction of permeability is a critical, key step for reservoir modeling and management of oil recovery operations. Previous studies have successfully demonstrated that the new technology called Artificial Neural Network (ANN), a biologically inspired, massive parallel, distributed information processing system, is an excellent tool for permeability predictions using well log data. This technology overcomes the drawbacks caused by the inherent heterogeneity of the reservoir and lack of sufficient cores or pressure transient tests, allowing to define reservoir characterization within an acceptable accuracy while maintaining costs low. The methodology used in this study takes advantage of this technology to accomplish …
Inservice And Preservice Teacher Attitudes Toward Creative Writing As A Learning Mechanism, Edwin Davis Greenlee
Inservice And Preservice Teacher Attitudes Toward Creative Writing As A Learning Mechanism, Edwin Davis Greenlee
Graduate Theses, Dissertations, and Problem Reports (ETD)
Most of us in the teaching profession are aware by now that writing is inextricably interlocked with learning, thinking, and knowing. The more students write, the more knowledge they acquire. As Janet Emig informs us: "Writing serves learning uniquely because writing as process-and-product possesses a cluster of attributes that correspond uniquely to certain powerful learning strategies" (1983, 34). In other words, Emig (1971) believes that when using writing to learn, students can become involved in learning activities. Writing as learning permits students to integrate, connect, reconsider, evaluate, and personally shape their thoughts and ideas. By writing and rewriting, students can …
Preliminary Investigation Of Culvert Outlet Baffle Block Geometry And Energy Dissipation, Conrad Russell Baston
Preliminary Investigation Of Culvert Outlet Baffle Block Geometry And Energy Dissipation, Conrad Russell Baston
Graduate Theses, Dissertations, and Problem Reports (ETD)
One method used to attenuate high-energy flow at culvert outlets, is the construction of baffle blocks. Baffle blocks are devices, generally of simplistic geometry, that impact the flow and reduce energy. The current baffle design used by the WVDOH has in some instances experienced problems with excessive sedimentation to the extent of causing culvert failure. The purpose of this investigation was to construct a testing device to allow for the testing of physical culvert and baffle block models and produce a preliminary design that would perform more efficiently than the current design. The new design would need to meet the …
Contrawound Toroidal Helical Antenna Modeling Using The Fdtd Method, Khaled Mohammad Elsherbini
Contrawound Toroidal Helical Antenna Modeling Using The Fdtd Method, Khaled Mohammad Elsherbini
Graduate Theses, Dissertations, and Problem Reports (ETD)
The contrawound toroidal helical antenna (CTHA) is a patented antenna developed at the Center for Industrial Research Applications (CIRA) of West Virginia University. In this study, a computer numerical model was built to simulate the behavior of printed circuit board versions of the CTHA. The numerical model was built upon the finite difference time domain method (FDTD). The results were compared to results from physical antennas, obtained from the CIRA anechoic chamber located in the WVU hanger, to verify the validity of the results of the numerical model. The results from both the numerical and experimental models were also used …
Iron And Acid Removal From Acid Mine Drainage In Open Limestone Systems, Qingyun Sun
Iron And Acid Removal From Acid Mine Drainage In Open Limestone Systems, Qingyun Sun
Graduate Theses, Dissertations, and Problem Reports (ETD)
Passive systems, like wetlands, anoxic limestone drains, and open limestone channels, show promise for treating acid mine drainage (AMD) discharges. Open limestone channels have been developed for over ten years and the treatment effectiveness of AMD by open limestone systems shows wide variation. The variation is due to site conditions (slope and size of the limestone channel) but more importantly to the surface area of the limestone and iron concentrations in the water. Iron in AMD coats the limestone in open limestone systems thereby reducing the surface area available for reaction. Over time, the limestone appears to lose its ability …
Ab Initio Studies Of Anisotropic Magnetism In Uranium And Cerium Monopnictides And Monochalcogenides, Eric Mason Collins
Ab Initio Studies Of Anisotropic Magnetism In Uranium And Cerium Monopnictides And Monochalcogenides, Eric Mason Collins
Graduate Theses, Dissertations, and Problem Reports (ETD)
We have applied two ab initio based methods to investigate the origin in the electronic structure of the unusual magnetic behavior of the cerium and uranium monopnictides and monochalcogenides. First, we have carried out spin-polarized electronic structure calculations, based on the full potential linear muffin tin (FPLMTO) method, with spin polarization (orbital polarization only via spin-orbit coupling) and also with orbital polarization correction. Second, we have carried out ab initio based calculations synthesizing (1) a phenomenological theory of orbitally driven magnetism based on the Anderson and Kondo, lattice model which incorporates explicitly the hybridization induced and the Coulomb exchange interactions …
Review Of The Factors Influencing The Satisfaction Of Learning In Online Courses At Marshall University, Jan Isobel Fox
Review Of The Factors Influencing The Satisfaction Of Learning In Online Courses At Marshall University, Jan Isobel Fox
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study is to determine what factors influence online course satisfaction. Additionally, the study investigates differences in demographics between traditional student populations and those students attracted to online courses. Research questions were defined for investigating relationship between student satisfaction in the online course with the of the amount of learner interaction and feedback, the reason students enrolled in the course, faculty expertise in online technologies, the course pace, the combination of instructional strategies used in the course, and the students prior experience with the online course product. Additionally, course retention data was calculated as a secondary satisfaction …
Common Factors Leading To County Boards Of Education Financial Deficits, David L. Stewart
Common Factors Leading To County Boards Of Education Financial Deficits, David L. Stewart
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study reviewed and analyzed budget deficits incurred by county boards of education in West Virginia and determined why increasing numbers of county boards of education have experienced deficit spending since the enactment of Senate Bill 14.;This study utilized a descriptive research design. The West Virginia Department of Education provided deficit, enrollment, and personnel data; all fifty-five county superintendents and treasurers were surveyed to determine the frequency and cause of budget deficits. One hundred percent of both groups responded to the survey.;In conclusion, factors contributing to county boards of education experiencing financial deficit included: (1) reduction of numbers of employees …
Factors Found When Integrating Computer Technology In A Small Rural School District, Edward Dale Jeffreys
Factors Found When Integrating Computer Technology In A Small Rural School District, Edward Dale Jeffreys
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this research study was to provide school board members, school administrators, and teachers with information required in developing a successful plan for the integration of computer technology into the classroom curriculum. The stated problem of this research was to identify and analyze the factors that inhibit and enhance the implementation of computer technology into the classrooms of a small rural school district.;A review of the literature was conducted in the following areas: (a) the use of computer technology in K--12 rural school districts; (b) enhancers to the integration of computer technology into the classroom curriculum in small …
Point Doppler Velocimetry Measurements In Circular Jets, Patrick Michael Collins
Point Doppler Velocimetry Measurements In Circular Jets, Patrick Michael Collins
Graduate Theses, Dissertations, and Problem Reports (ETD)
Improvements have been made to an existing 2-component Point Doppler Velocimetry (PDV) system to improve instrument accuracy and repeatability and to reduce mean velocity offset. Most importantly, the original iodine cells have been replaced by vapor-limited iodine cells that are not influenced by room temperature variations. PDV is a non-intrusive laser based flow measurement technique with capabilities that are similar to hot wire anemometry, but without inserting a probe into the flow. The insertion of a probe into a flow can affect the flow, resulting in inaccurate measurements.;PDV measurements for 1 inch diameter standard, swirling, and annular jets have been …
Java-Based Midi Interface For Robot Control, Gaurav Subhash Harode
Java-Based Midi Interface For Robot Control, Gaurav Subhash Harode
Graduate Theses, Dissertations, and Problem Reports (ETD)
Robot offers an excellent means of utilizing high level technology to make a given manufacturing operation more profitable and competitive. Apart from manufacturing, robots are also being utilized in the areas of medicine and agriculture with great returns. Robotic applications now require multiple robots working in a coordinated manner, something similar to an orchestra. This lead to the concept of a Robotic Instrument Digital Interfacing (RIDI) system for real time coordinated control of robotic devices. It provides a novel runtime environment that supports the building and deployment of distributed robotic devices.;The objective of this research is to design and develop …
Training The Intuition, Paul M. Linhares
Training The Intuition, Paul M. Linhares
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis is about the ceramic art of Paul Linhares. It deals with his many aesthetic theories about the form and function of his pottery. The thesis includes sections on motive, personal influences, descriptions of the pots themselves, white wood fire clay bodies, and images of some of the works included in Paul's thesis exhibition.
Monsters Under The Bed, Joelle Spencer
Monsters Under The Bed, Joelle Spencer
Graduate Theses, Dissertations, and Problem Reports (ETD)
The exhibition, monsters under the bed is a representation of what occurs when the bedroom lights are turned on and monsters, born from childhood fear, refuse to retreat into the shadows. Cartoon illustrations of physical and mental martyrdom point to the theme of death, as seen through the psychical dysfunction of a child. monsters under the bed, is an autobiographical exploration of adult reflection about a child's world translated into objects of theatrical mythologies.;In order to make my objects and images materialize, I incorporate a broad range of traditional and non-traditional mixed-media techniques. The methods I utilize to make the …
Evaluation Of Lubricants For Cold Forming Of Steels By Double-Cup Extrusion Tests, Shivakumaran Bharadwaj Venkataraman
Evaluation Of Lubricants For Cold Forming Of Steels By Double-Cup Extrusion Tests, Shivakumaran Bharadwaj Venkataraman
Graduate Theses, Dissertations, and Problem Reports (ETD)
The double-cup extrusion testing method was chosen for measuring the pressure and material flow parameters in order to quantify the frictional shear factor between the workpiece and the forming tool in cold metal forming processes. The test was adapted to be used under production conditions and applied to characterize and compare the lubrication properties of different types of lubricants and coatings.;It was found to be a useful approach to estimate the relative efficiency of different lubricants and coating methods. It indicated that one specific lubricant has significantly superior lubricant characteristics than others.;FEA analysis of the experimental setup was constructed to …
Manufacture And Rehabilitation Of Guard-Rail Posts Using Composites For Superior Performance, Swetha Anegunta
Manufacture And Rehabilitation Of Guard-Rail Posts Using Composites For Superior Performance, Swetha Anegunta
Graduate Theses, Dissertations, and Problem Reports (ETD)
The effectiveness of an external composite reinforcement in improving the strength and durability of a conventional CCA treated wood post was studied. A combination of HMR as primer and epoxy as adhesive was found to provide the best possible adhesion of a glass fibers to CCA treated wood. Wrapped samples, representing a scaled down version of the proposed posts were subjected to 6-cycle accelerated aging and freeze-thaw chemical aging (in acidic, alkaline, water and salt water solutions). The retention in mechanical properties was measured using flexure tests and DMTA. The performance in terms of modulus and rigidity was reduced the …
Effect Of Debris-Induced Lift-Off On Magnetic Flux Leakage Inspection Results, Francisco Louis Valentine
Effect Of Debris-Induced Lift-Off On Magnetic Flux Leakage Inspection Results, Francisco Louis Valentine
Graduate Theses, Dissertations, and Problem Reports (ETD)
Debris is present in all pipelines and has the potential to cause debris-induced lift-off in magnetic flux leakage inspection tools. A test apparatus was developed to qualitatively examine the effect of debris-induced lift-off.;The results of this research indicate that debris-induced lift-off has a detrimental effect on magnetic flux leakage data. This increases the potential of pipeline defects being either undersized or missed.;To reduce or eliminate the effects of debris-induced lift-off, the pipeline should be regularly cleaned. This minimizes the occurrence of large accumulations of debris. If it is determined that debris is present in a pipeline, even in small quantities, …
Substrate Cleaning Using A Remote Hydrogen Rf-Plasma, Srinivasan Prasanna
Substrate Cleaning Using A Remote Hydrogen Rf-Plasma, Srinivasan Prasanna
Graduate Theses, Dissertations, and Problem Reports (ETD)
The substrates (wafers) used in semiconductor processing have a surface oxide layer (the so-called native oxide layer) and a hydrocarbon contamination layer that must be removed before growing an epitaxial film of good quality. In this work, low temperature remote rf-hydrogen plasma cleaning of II-VI and silicon semiconductor surfaces was investigated as a preparation for subsequent deposition in molecular beam and gas source molecular beam epitaxy environments. The plasma was characterized using mass spectrometric methods to determine the identity and relative fluxes of ionic and neutral species and to determine the kinetic energies of the ionic species. Etching studies were …
Web-Based Workflow In Secure Collaborative Telemedicine, Vijayanand Ranganath Bharadwaj
Web-Based Workflow In Secure Collaborative Telemedicine, Vijayanand Ranganath Bharadwaj
Graduate Theses, Dissertations, and Problem Reports (ETD)
Workflow involves the automation of a business process in whole or part with movement of information and tasks between parties according to a set of rules. The ubiquitous nature of the Internet and WWW prompts us to investigate how these entities can be fully exploited to improve the efficiency of any workflow process in a reliable, secure fashion.;This research effort alms to investigate the utility of the internet and specifically the WWW in providing a substrate for complex workflow and to demonstrate that workflow with a high degree of automation and ability to interface with disparate data sources can be …
Sonovoltammetric Detection Of Cadmium (Ii) At Mercury Thin Film Electrodes, Stacey L. Clark
Sonovoltammetric Detection Of Cadmium (Ii) At Mercury Thin Film Electrodes, Stacey L. Clark
Graduate Theses, Dissertations, and Problem Reports (ETD)
The application of ultrasound has been used previously in many areas of chemistry. The use of ultrasound to enhance the mass transport of cadmium (II) to a mercury film electrode (MFE) was investigated using square wave stripping voltammety. Both platinum and glassy carbon electrodes were examined as support materials for the mercury film and the results were compared to a dialysis membrane-covered glassy carbon MFE. The platinum electrode behaved in an unusual manner and appeared to be greatly affected by the ultrasound. The glassy carbon MFE also exhibited loss of sensitivity after exposure to ultrasound; however, when the glassy carbon …
Smart Card-Enabled Security Services To Support Secure Telemedicine Applications, Monoreet Mutsuddi
Smart Card-Enabled Security Services To Support Secure Telemedicine Applications, Monoreet Mutsuddi
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Internet is quickly evolving into a standard and widely used mode of information transfer. Therefore internet's information transfer capabilities could be exploited by Secure Telemedicine Applications to securely transfer medical information. However the current day internet protocol stack does not provide much in terms of security for the data being transferred across it. In this thesis we explore how Cryptography along with Smart Cards can be used to implement application layer protocols, to enhance the security of data flowing across the internet in a Secure Telemedicine environment. This thesis also discusses the design and implementation of various system software …
Secure Telemedicine System For Home Health Care, Sridhar Vasudevan
Secure Telemedicine System For Home Health Care, Sridhar Vasudevan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis describes a low-cost telemedicine system that provides home based patient care by linking patients with skilled nurses at the home care agency. The system employs compact vital signs sensors and a two-way real-time video conference over telephone lines. It stores the patient's medical records, still images and enforces clinical pathways during the televisits. Physicians, paramedics, and nurses can then have access to these records from anywhere, securely, through a Web browser.;This document discusses the underlying technologies, the features implemented in the prototype, and the methodologies used in developing the software. The prototype uses the Enterprise Java Bean [EJB] …
Factors Influencing Ruffed Grouse Productivity And Chick Survival In West Virginia, Christopher A. Dobony
Factors Influencing Ruffed Grouse Productivity And Chick Survival In West Virginia, Christopher A. Dobony
Graduate Theses, Dissertations, and Problem Reports (ETD)
I examined productivity, chick mortality, and factors influencing ruffed grouse (Bonasa umbellus) chick survival in West Virginia during 1998--1999. The proportion of hens that attempted to nest, hen success, average clutch size, and hatch dates were similar between age classes, between sites, and between years. Hatch dates were similar between age classes and between sites. Depredation was the major cause of nest failure. I examined 2 types of radio transmitter attachment methods (glue-on and collar type) to determine mortality and survival in ≤3-day-old grouse chicks. Glue-on transmitters performed poorly, whereas collar types had excellent retention time. Chick survival was low …
Heavy Metal Redistribution In Soils Using Compost As A Soil Amendment, Jason Thomas Morrison
Heavy Metal Redistribution In Soils Using Compost As A Soil Amendment, Jason Thomas Morrison
Graduate Theses, Dissertations, and Problem Reports (ETD)
Organic soil amendments such as compost can reduce the availability of heavy metal contaminated soil. The objectives of this study were (1) to evaluate the efficiency of compost as an soil amendment within heavy metal contaminated soil; (2) to determine the hypoaccumulation of heavy metals in the stem, shoot, and root systems of white clover and wheat; (3) to identify movement of heavy metals within the soil; (4) to evaluate the differences of nodule formation in Trifolim repens. Three volumes of compost were added to a heavy metal contaminated soil (additions of zero, 10, and 40 percent compost, by volume). …
Parental Influences On High School Student Achievement And Goals, Richard K. York
Parental Influences On High School Student Achievement And Goals, Richard K. York
Graduate Theses, Dissertations, and Problem Reports (ETD)
The present study examined parental influences on educational and career goals of high school students. Data on educational and career goals from the Perceived Life Chances Interview were derived from 124 rural adolescents. One hundred of their mothers and 36 of their fathers completed the Inventory of Parental Influence which consists of five subscales of Parental Involvement/Help, Psychological Support, Parental Pressure, Pressure for Intellectual Development, and Time Management/Monitoring. Responses from the Perceived Life Chances Interview were qualitatively analyzed in order to derive categories that reflected the varying responses from participants. These categories served as dependent variables in a series of …
Virulence Of Cryphonectria Hypoviruses From Previous Release Sites, Paul Henry Chaloux
Virulence Of Cryphonectria Hypoviruses From Previous Release Sites, Paul Henry Chaloux
Graduate Theses, Dissertations, and Problem Reports (ETD)
In 1994 and 1995, Cryphonectria parasitica isolates singly or doubly infected with hypoviruses in the CHV3 genus, and lacking distinctive morphological abnormalities, were recovered near plots formerly used to release hypoviruses. This study tested the hypothesis that North American hypoviruses are evolving decreased virulence, and investigated hypovirus interactions affecting virulence in double-infections. Families of single conidial progeny (SCP), differing in infection status, and derived from six recovered, three release, and three comparison isolates were tested in three field experiments. All release isolates and four recovered isolates were debilitated by their CHV3-gh2-type hypoviruses. CHV3-sr2-type hypoviruses never caused debilitation. In family SG3-2 …