Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (783)
- Social and Behavioral Sciences (648)
- Life Sciences (513)
- Physical Sciences and Mathematics (501)
- Medicine and Health Sciences (458)
-
- Arts and Humanities (334)
- Psychology (253)
- Education (211)
- Mechanical Engineering (161)
- Civil and Environmental Engineering (142)
- Chemistry (128)
- Music (115)
- Chemical Engineering (113)
- Electrical and Computer Engineering (110)
- Business (94)
- Environmental Sciences (92)
- Earth Sciences (90)
- Civil Engineering (84)
- Materials Science and Engineering (83)
- Public Health (81)
- Music Performance (80)
- Communication (79)
- Computer Sciences (79)
- Nursing (79)
- Computer Engineering (77)
- Animal Sciences (75)
- History (75)
- Operations Research, Systems Engineering and Industrial Engineering (75)
- Neuroscience and Neurobiology (73)
- Ecology and Evolutionary Biology (67)
- Keyword
-
- Mechanical engineering (476)
- Electrical engineering (282)
- Civil engineering (254)
- Computer science (249)
- Forestry (156)
-
- Chemical engineering (152)
- Clinical psychology (152)
- Ecology (130)
- Behavioral psychology (116)
- Petroleum engineering (113)
- Aerospace engineering (112)
- Industrial engineering (112)
- Higher education (108)
- Economics (103)
- Environmental engineering (99)
- Geology (99)
- Animal sciences (97)
- Materials science (95)
- Molecular biology (94)
- Public health (90)
- Aquatic sciences (88)
- Mining engineering (88)
- Educational technology (86)
- Energy (84)
- Environmental science (84)
- Developmental psychology (83)
- Educational psychology (82)
- Dentistry (78)
- Machine Learning (75)
- Social psychology (71)
- Publication Year
- File Type
Articles 5461 - 5490 of 11969
Full-Text Articles in Entire DC Network
An Investigation Of The Accuracy Of A New Technique For Surgical Repositioning A Maxilla, Chad L. Westfall
An Investigation Of The Accuracy Of A New Technique For Surgical Repositioning A Maxilla, Chad L. Westfall
Graduate Theses, Dissertations, and Problem Reports (ETD)
Objectives: The purpose of this study was to test the method of the Four Faces of Orthognathic SurgeryRTM in regards to surgical accuracy and the ability to transfer this method to an academic setting. Methods: An experimental group consisted of 15 patients from a university setting and 17 patients from a private practice setting. Lateral cephalograms were taken immediately prior to the orthognathic procedure and post-operatively within six weeks. Pre-surgical, post-surgical cephalograms, and the hand generated surgical predictions were collected from the sample. The differences of planned and actual changes to incision were then analyzed to determine whether or not …
Accelerating Moea Non-Dominated Sorting By Preserving Archival Relationships, Joseph Axilrod Craig
Accelerating Moea Non-Dominated Sorting By Preserving Archival Relationships, Joseph Axilrod Craig
Graduate Theses, Dissertations, and Problem Reports (ETD)
Non-dominated sorting is an important part of many multi-objective evolutionary algorithms (MOEAs). It is used to determine which individuals to keep in the archive of best individuals between generations and to evaluate fitness for breeding. Because this sorting is performed after every generation, it can contribute significantly to the running time of an MOEA. If the population size is sufficiently large, the time spent sorting the population can come to dominate an MOEA's running time.;The non-dominated sorting algorithms in the literature propose optimizations that focus on skipping unnecessary comparisons among individuals. While these algorithms provide different means for skipping these …
Embodied Revelation: The Threat Of Sudden Cardiac Death For Implantable Cardioverter Defibrillator Candidates, Vera Barton-Caro
Embodied Revelation: The Threat Of Sudden Cardiac Death For Implantable Cardioverter Defibrillator Candidates, Vera Barton-Caro
Graduate Theses, Dissertations, and Problem Reports (ETD)
BACKGROUND: Heart failure is a severe, chronic condition characterized by high mortality and high morbidity. Sudden cardiac death is the leading cause of death for people with heart failure as well as the primary cause of death in the United States. Implantable cardioverter defibrillators (ICDs) represent the standard of care as the only effective therapy for primary prevention of sudden cardiac death. However, a significant proportion of qualifying heart failure patients declines this life-saving device. Nurses are charged with advocating for well-informed patient decisions. Yet, there is little extant literature that addresses the decision-making process for patients considering an ICD. …
An Analysis Of Recreation User Perceptions: Crowding, Conflict, And Satisfaction At Diamond Lake, Oregon, Christoper D. Caplinger
An Analysis Of Recreation User Perceptions: Crowding, Conflict, And Satisfaction At Diamond Lake, Oregon, Christoper D. Caplinger
Graduate Theses, Dissertations, and Problem Reports (ETD)
This purpose of this study was to investigate visitor perceptions, particularly those related to crowding, conflict and satisfaction, within the context of Diamond Lake, while the relationship between these variables was also compared. The lake was analyzed both as a whole and across four separate zones which surround the lake. A thorough examination of visitor demographics and characteristics was included as well, in order to gain a clear understanding of the visitors who come to lake and provide additional insights into their perceptions.;This study was conducted over the summer of 2012 between May and August at Diamond Lake within the …
Assessment Of Age, Diet, And Growth Of Yellow Perch ( Perca Flavescens) In Cheat Lake, West Virginia, Nate Taylor
Assessment Of Age, Diet, And Growth Of Yellow Perch ( Perca Flavescens) In Cheat Lake, West Virginia, Nate Taylor
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis evaluates population characteristics of yellow perch ( Perca flavescens) in Cheat Lake, West Virginia, and is comprised of two chapters: 1) an introduction and literature review on the biology, ecology, and life history of yellow perch and studies regarding diet growth, and condition and 2) a study examining age and length, summer diet composition, and growth of yellow perch in Cheat Lake, West Virginia. Owing partly to recent mitigation of acidic conditions in the Cheat River watershed, populations of yellow perch and other fishes have increased in Cheat Lake. For this study, I evaluated age and length, summer …
Assessment Of Hyporheic Exchange At In-Stream Restoration Structures On Savage River, Garrett County, Maryland, Anna L. Berlinghieri
Assessment Of Hyporheic Exchange At In-Stream Restoration Structures On Savage River, Garrett County, Maryland, Anna L. Berlinghieri
Graduate Theses, Dissertations, and Problem Reports (ETD)
Previous studies have shown that in-stream restoration structures alter hyporheic exchange dynamics in restored channels; this study assessed hyporheic exchange at a recently constructed stream reach, including the effects of in-stream restoration structures. Hydrometric and thermal data were collected in the streambed near three restoration structures and at a reference site. The hydrometric data indicated that hyporheic flow paths may not have fully developed in the first 16 months following construction; only one in-stream piezometer was unambiguously hydraulically connected to changes in stream stage. Other hydrometric data revealed possible piezometer installations in low permeability materials, potential hydraulic connections to an …
The Effects Of Currency And Imports Restrictions On Luxury Advertising In Argentina: Content Analysis Of Ads In Argentine Fashion Magazines, Juan F. Mundel
The Effects Of Currency And Imports Restrictions On Luxury Advertising In Argentina: Content Analysis Of Ads In Argentine Fashion Magazines, Juan F. Mundel
Graduate Theses, Dissertations, and Problem Reports (ETD)
While many scholars have examined the relationships between public policies and advertising, few have studied such relationships in Latin America. This study explores how the limitations on foreign exchange transactions in Argentina affect the advertising strategies implemented by luxury brand advertising. A content analysis of 398 luxury brand ads placed in fashion magazines in Argentina was conducted to investigate changes in the luxury ads in the wake of the currency and import restrictions in Argentina. The analysis indicates that, during the restrictions, ads were less likely to convey strong emotional messages than before. Also, the result suggests that the creative …
Spring Studies And A Decision-Making Process To Guide Groundwater Contamination Prevention In An Agricultural Karst Basin, Erin D. Murphy
Spring Studies And A Decision-Making Process To Guide Groundwater Contamination Prevention In An Agricultural Karst Basin, Erin D. Murphy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Groundwater contamination is a potential major health and environmental issue in karst aquifers because of rapid surface water to groundwater connections and conduit-dominated flow that may allow contaminants to move great distances from their source in a very short amount of time. Agricultural contaminants are a significant problem in Buckeye Creek basin in Greenbrier County, West Virginia. Pasquarell and Boyer (1995) found that cattle grazing near sinking streams, sinkholes, and springs contribute to the elevated levels of fecal coliform bacteria in the groundwater. Six sites in Buckeye Creek basin were monitored for fecal coliform contamination and then analyzed in order …
Remembering 1989: Post-Communist Commemorations In Berlin And Warsaw, Kyle Jordan Meadows
Remembering 1989: Post-Communist Commemorations In Berlin And Warsaw, Kyle Jordan Meadows
Graduate Theses, Dissertations, and Problem Reports (ETD)
Germany and Poland since 1989 have become lands of contested memory, as reflected by their attempts to commemorate the series of reforms that led to the end of their Communist regimes. This study is an attempt to analyze the various modes of commemoration dedicated to the transition from communism that have taken place in the intervening years between 1989 and the present. Included amongst these efforts are events occurring in public spaces, such as official remembrance ceremonies like Berlin's Festival of Freedom in 2009, physical monuments, and institutions dedicated to preserving memory, specifically the Gauck Authority in Germany and the …
From Gunboats To Good Neighbors: U.S. Naval Diplomacy In Peru, 1919-1942, Joel C. Christenson
From Gunboats To Good Neighbors: U.S. Naval Diplomacy In Peru, 1919-1942, Joel C. Christenson
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation examines the role naval power played in the evolution of U.S. policy toward Latin America during the interwar period, when the United States abandoned armed interventionism in favor of the policy of the "Good Neighbor." Specifically, it focuses on two oft-overlooked types of naval diplomacy the United States used to exercise influence in the South American nation of Peru: the employment of U.S. personnel as naval advisers to the Peruvian government, and the use of U.S. naval vessels as agents of public diplomacy on "goodwill" cruises and port visits in Peruvian waters. It argues that the United States …
Appalachian Alter-Natives: The Back-To-The-Land Migration And Community Change In Appalachia, 1970--2000, Jinny A. Turman
Appalachian Alter-Natives: The Back-To-The-Land Migration And Community Change In Appalachia, 1970--2000, Jinny A. Turman
Graduate Theses, Dissertations, and Problem Reports (ETD)
Beginning in the late 1960s and continuing through the 1970s, thousands of people migrated from America's cities to the countryside to establish communes and independent homesteads on small plots of land. By working the land they hoped to achieve autonomy, self-sufficiency, and closeness with nature. Cheap land, mild climate, beautiful scenery, and folk culture drew many of these predominately young, white, well educated, and affluent migrants to Appalachia. During the earliest years of the back-to-the-land migration suspicion and occasionally conflict surfaced as natives and newcomers navigated different lifestyle preferences and worldviews, for many of the back-to-the-landers, or "alter-natives," had identified …
How Do They Think Differently?: A Social Media Advertising Attitude Survey On Chinese Students In China And Chinese Students In America, Anan Wan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study explored whether Chinese students in both China and in America had different attitudes toward social media advertising, and how their attitudes are different, through a survey of Chinese students in these two countries. The survey determined how they used social media, whether the different social media networks in the two countries affected their social media use, and what their attitudes are about social media advertising in terms of sources, content, and level of trustworthiness. It also tested the relationship between the students' the social media diet (amount, frequency, and duration) and attitude toward social media advertising.
Development Of Hydrogel Tracer Beads And Comparative Tracer Tests To Better Understand Contaminant Fate And Transport In Karst Systems, Amanda Laskoskie
Development Of Hydrogel Tracer Beads And Comparative Tracer Tests To Better Understand Contaminant Fate And Transport In Karst Systems, Amanda Laskoskie
Graduate Theses, Dissertations, and Problem Reports (ETD)
Karst aquifers can be highly susceptible to contamination due to a close connection to the land surface, lack of filtration through a soil zone, and rapid transmission along solutionally-enhanced flowpaths. These factors also allow for aquifer contamination by direct injection of immiscible organic compounds in the form of non-aqueous phase liquids (NAPLs). The fate and transport of NAPLs in karst aquifers is poorly understood. Tracer tests allow for qualitative characterization of hydraulic flow in the surface and subsurface, but their results may not be applicable to the movement of NAPL for which density plays a critical role. Particulate tracers have …
On The Design, Analysis, And Implementation Of Algorithms For Selected Problems In Graphs And Networks, Matthew D. Williamson
On The Design, Analysis, And Implementation Of Algorithms For Selected Problems In Graphs And Networks, Matthew D. Williamson
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis studies three problems in network optimization, viz., the minimum spanning tree verification (MSTV) problem, the undirected negative cost cycle detection (UNCCD) problem, and the negative cost girth (NCG) problem. These problems find applications in several domains including program verification, proof theory, real-time scheduling, social networking, and operations research.;The MSTV problem is defined as follows: Given an undirected graph G = (V,E) and a spanning tree T, is T a minimum spanning tree of G? We focus on the case where the number of distinct edge weights is bounded. Using a bucketed data structure to organize the edge weights, …
Leadership Practices Of A Principal In A High School With A High Teacher Retention Rate, Ronald A. Branch Ii
Leadership Practices Of A Principal In A High School With A High Teacher Retention Rate, Ronald A. Branch Ii
Graduate Theses, Dissertations, and Problem Reports (ETD)
As political and societal expectations for our nation's public school system continue to increase, leaders of local school systems are ever mindful of the demands for continual improvement. The cornerstone for this improvement is the classroom teacher. Research has supported the idea that teacher experience is influential in the effectiveness of the teacher. The statistics on teacher attrition, though, are disheartening.;The purpose for this research is to uncover emerging themes regarding the leadership practices and cultural elements that are in place in a school that has a high retention rate of teachers. This case study includes a school in the …
Access, Retention, And Progression Of Marginalized Students In Kisii Schools, Kenya, Harrison Ntabo Oonge
Access, Retention, And Progression Of Marginalized Students In Kisii Schools, Kenya, Harrison Ntabo Oonge
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined how teachers perceive Free Primary Education had influenced access, retention and progression of marginalized students in primary schools in Kisii County, Kenya. A critical pedagogy framework was used to unpack and shed light on teacher and school practices that affected access to basic education of at risk students. Data was collected through 217 surveys given to teachers from 28 purposefully selected primary schools in Kisii County, 3 administrator interviews, and 4 focus group interviews comprised of a total of 30 classroom teachers from 14 schools in a sequential mixed methods design. Four research questions that guided this …
Resilient Journeys: A Case Study Of Why And How Low-Income Families Practice Homeschooling, Cheng-Hsien Wu
Resilient Journeys: A Case Study Of Why And How Low-Income Families Practice Homeschooling, Cheng-Hsien Wu
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study is to explore why and how two low-income families practice homeschooling. A qualitative case study of low-income homeschooling mothers' experiences was conducted over the course of four months in Tennessee and West Virginia. The major research question was: How and why working class families decide to homeschool their children? Specifically, I believed that a qualitative examination of this topic would allow me to answer a number of attendant questions:;1. How and why do local contexts of "choice" shape low-income homeschoolers' experiences? a. How do local public school experiences shape homeschooling experiences, motivations, and practices? b. …
Characterization Of Coconut Oil And Cla Induced Lipolysis, Siri Manasa Ippagunta
Characterization Of Coconut Oil And Cla Induced Lipolysis, Siri Manasa Ippagunta
Graduate Theses, Dissertations, and Problem Reports (ETD)
Obesity is a main health concern and leads to many other health complications. Conjugated linoleic acid (CLA) has been shown to cause a reduction in obesity in several species. CLAinduced body fat loss is enhanced when mice are fed coconut oil (CO). The objectives were to determine if the CLA-induced lipolysis in different oil source-fed mice was time-dependent and to determine the effect of cell signaling inhibitors on CO+CLA-induced lipolysis. Study 1: Male mice (ICR; n=80; 3wk) were fed 7% soybean oil (SO) or CO diets for 6wk and then supplemented with 0 or 0.5% CLA for 3, 7, 10 …
The Effectiveness Of A Structured Telephone Support Program For Rural Patients With Heart Failure, Debra J. Ansinelli
The Effectiveness Of A Structured Telephone Support Program For Rural Patients With Heart Failure, Debra J. Ansinelli
Graduate Theses, Dissertations, and Problem Reports (ETD)
The health of a population is influenced by the physical, social, cultural, and economic environment. Limited access to care has been cited as a reason why the Appalachian region of Kentucky has one of the highest rates of cardiovascular disease in the developed world. Kentucky ranked seventh in the nation for heart failure (HF) death rates 2007-2009. The objectives of this project were to evaluate the effectiveness of a structured telephone support program for HF management to improve self-care behaviors and quality of life and to reduce anxiety, 30 day readmission rates, and mortality rates in rural patients with heart …
The Effect Of Organic Acids On Compositional Characteristic Of Protein And Lipid Recovered During Isoelectric Solubilization/Precipitation Processing Of Silver Carp And The Effectiveness Of These Organic Acids On The Reduction Of Staphylococcus Aureus, Maryam Ronaghi
Graduate Theses, Dissertations, and Problem Reports (ETD)
An effective method to recover protein, called ISP processing, uses extreme pH shifts to solubilize protein and then recover it by precipitation and centrifugation. The objective of this study was to determine the proximate composition of the recovered materials from ISP after processing with different acid concentrations and the bactericidal effectiveness of these acids in comparison with hydrochloric acid (HCl) and acetic acid against Staphylococcus aureus during isoelectric solubilization and precipitation (ISP) processing. Headed and gutted silver carp were homogenized and brought to the protein solubilization pH (2.5, 3.0, 11.5, or 12.5) using the acids (glacial L-lactic acid and formic …
Abelson Kinase Based Regulation Of Tumor Cell Invasion In Hnscc, Karen E. Hayes
Abelson Kinase Based Regulation Of Tumor Cell Invasion In Hnscc, Karen E. Hayes
Graduate Theses, Dissertations, and Problem Reports (ETD)
Nearly 40,000 new cases of head and neck squamous cell carcinoma (HNSCC) are annually diagnosed in the United States. The current standard of care for HNSCC patients consists of chemoradiation often combined with targeted therapeutic agents. However, the five-year survival rate for patients that relapse is < 50%. Patients with recurrent or metastatic disease have a very poor prognosis and typical survive < 12 months due to therapeutic resistance and loco-regional invasive spread. HNSCC invasion is mediated in part by lamellipodia and invadopodia, two actin-based structures responsible for facilitating invasive movement. Key signaling pathways that govern lamellipodia and invadopodia production are hyperactivated or overexpressed in HNSCC, including EGFR, Src, Erk 1/2, and cortactin. The overall goal of this dissertation is to determine how these signaling components regulate lamellipodia and invadopodia production and function in HNSCC. Three studies were completed that address these issues. Study One reveals an anti-invasive function for Abl in invadopodia regulation in HNSCC, results that are contrary to the pro-invasive influence Abl has in breast and other cancer types. Study Two establishes a fundamental role for Src has in HNSCC invasion and metastasis through the use of the dual Src/Abl inhibitor saracatinib. In Study Three we determine the expression and activation levels of Erk 1/2 in HNSCC patient samples and the role of Erk 1/2 cortactin phosphorylation in HNSCC adhesion, migration and lamellipodia persistence. Collectively these studies shed new light into the fundamental mechanisms utilized during various steps in HNSCC invasion, providing the potential for refinement and development of new avenues for therapeutic intervention.
Analysis And Application Of Automated Methods For Detecting Pulsars In The Green Bank Telescope 350mhz Drift-Scan Survey, David Paul Smithbauer
Analysis And Application Of Automated Methods For Detecting Pulsars In The Green Bank Telescope 350mhz Drift-Scan Survey, David Paul Smithbauer
Graduate Theses, Dissertations, and Problem Reports (ETD)
A significant portion of the process of detecting pulsars from radio sky surveys remains a largely manual task. The visual inspection of data in order to detect and validate potential pulsar candidates is by far the most time consuming portion of the overall process. Coupled with the fact that well over a Petabyte of pulsar survey data has been archived, the task of identifying these valuable phenomena is tedious and time consuming.;Using data from a survey performed with the National Radio Astronomy Observatory's (NRAO's) Green Bank Telescope (GBT) in 2007, this thesis explores the application of machine learning techniques to …
Characterization Of Atmospheric Particulate Matter In Mountaintop Mining And Non-Mining Areas In West Virginia With Known Health Differences, Laura M. Kurth
Characterization Of Atmospheric Particulate Matter In Mountaintop Mining And Non-Mining Areas In West Virginia With Known Health Differences, Laura M. Kurth
Graduate Theses, Dissertations, and Problem Reports (ETD)
Introduction: Mortality and morbidity rates in the Appalachian region are higher than in the national population. People who live in Appalachian areas where coal mining is prominent have increased health problems compared to people in non-mining areas of Appalachia. Health disparities remain higher in mining areas even after adjusting for lifestyle and demographic effects illustrating that additional factors, such as environmental influences, are associated with adverse health outcomes. Coal mines and coal mining activities result in the production of atmospheric particulate matter (PM), which is associated with environmental and human health effects. Environmental studies of air and water quality in …
Implementations Of Multi-Antenna Systems In A Usrp Based Sdr Using Simulink, Wesley G. Rumble
Implementations Of Multi-Antenna Systems In A Usrp Based Sdr Using Simulink, Wesley G. Rumble
Graduate Theses, Dissertations, and Problem Reports (ETD)
Software Radio systems are one of the most versatile and cost effective systems for pro- totyping communications techniques in use today. Through the use of minimal hardware, typically only an RF front end, an SDR allows for as much of the signal processing as possible to be done via software. The benefits of utilizing software for signal processing in place of hardware are numerous. In some cases, like this work, parameters of operation may need to be dynamic or the objective of the work is academic research of new techniques. In some cases like these, swapping out costly signal processing …
Distributed Location Estimation Of A Moving Target Characterized By A Spatial Poisson Field, Fathi Masoud
Distributed Location Estimation Of A Moving Target Characterized By A Spatial Poisson Field, Fathi Masoud
Graduate Theses, Dissertations, and Problem Reports (ETD)
Wireless Sensor Networks (WSNs) are traditionally employed to collect spatial and temporal data characterizing various events. These data are then used to solve inference problems such as object detection, counting, classification, estimation and tracking. Distributed solutions provided by WSNs are often cost effective and characterized by high performance indices.;In this work, we model and simulate a distributed sensor network composed of radiation detectors and analyze its ability to make inferences. Radiation detectors are deployed over a known area. A radiological point source is positioned in the interior of the area. Detectors take measurements of the field generated by the point …
Modeling Water Temperatures And Brook Trout (Salvelinus Fontinalis) Growth Potential Within A Complex Appalachian Riverscape, Michael Tincher
Modeling Water Temperatures And Brook Trout (Salvelinus Fontinalis) Growth Potential Within A Complex Appalachian Riverscape, Michael Tincher
Graduate Theses, Dissertations, and Problem Reports (ETD)
Climate change is expected to cause air temperatures to increase 2-5°C in the Appalachians throughout the 21st century. These air temperature increases will cause water temperatures to increase, and may negatively effect cold and cool water fish species. Brook trout are an important game fish and highly vulnerable species in West Virginia. The primary objectives of this study were to (1) construct and validate models relating stream water temperature to long6term climate data for 18 sites and (2) determine brook trout growth potential within sites of the upper Shavers Fork watershed that differ in water temperature regimes. Multiple linear regression …
Parent Civic Behavior And Observed Civic Messages: Associations With Adolescent Civic Behavior And Prioritization, Benjamin J. Oosterhoff
Parent Civic Behavior And Observed Civic Messages: Associations With Adolescent Civic Behavior And Prioritization, Benjamin J. Oosterhoff
Graduate Theses, Dissertations, and Problem Reports (ETD)
The current study employed observational and multi-informant survey methodology to explore associations among parents' civic behaviors, observed parent and adolescent messages about civic obligation, and adolescents' civic behavior and prioritization (should) judgments. A sample of 160 adolescents (Mage = 14.42, range = 12-18) and their parents (144 mothers and 52 fathers), participated in video-recorded, structured, dyadic interaction tasks in which they discussed citizenship and civic duty. Parents and adolescents also completed questionnaires assessing civic behavior and civic prioritization judgments. Within distinct civic activities, parents' report of civic behavior was positively associated with adolescents' report of civic behavior and prioritization judgments. …
A Multidimensional Investigation Of Sexuality In Older Adults Within A Successful Aging Model, Allyson S. Graf
A Multidimensional Investigation Of Sexuality In Older Adults Within A Successful Aging Model, Allyson S. Graf
Graduate Theses, Dissertations, and Problem Reports (ETD)
Sexual well-being in later life has traditionally been evaluated in relation to age-related physical limitations and sexual dysfunction. This study developed a multidimensional model of sexual well-being by investigating sexual interest, sexual attitudes (general and age-specific), and age-specific sexual knowledge in relation to more commonly-used indicators of sexual well-being (e.g., frequency and sexual satisfaction). Using a racially-diverse, U.S. sample of adults (N = 367, Mage = 54.40), structural equation modeling was used to test these associations (AGFI = .967; TLI = .994; and RMSEA = .031). Sexual interest (beta = .53), attitudes (beta = -.11 and .17), and knowledge (beta …
A Systematic Study Of Enzyme-Nanomaterial Interactions For Application In Active Surface Decontamination, Alan Steven Campbell
A Systematic Study Of Enzyme-Nanomaterial Interactions For Application In Active Surface Decontamination, Alan Steven Campbell
Graduate Theses, Dissertations, and Problem Reports (ETD)
Enzymes are a catalytic class of proteins that possess high specificity, selectivity and biocompatibility, which makes them ideal for multiple applications in industrial production and biotechnology. However, the use of enzymes in such applications is limited due to their low operational stability and increased cost attributed to difficulty of purification and reuse. Immobilization of enzymes onto nano-sized solid supports has emerged as a potential solution to these shortcomings with a trade-off of a percentage of activity loss upon immobilization. Herein, a comprehensive study of enzyme immobilization techniques with emphasis on active-surface decontamination applications is presented.;In Chapter 1, an overview of …
Characterization Of The Composition And Toxicity Of Particulate Matter Emissions From Advanced Heavy-Duty Natural Gas Engines, Arvind Thiruvengadam Padmavathy
Characterization Of The Composition And Toxicity Of Particulate Matter Emissions From Advanced Heavy-Duty Natural Gas Engines, Arvind Thiruvengadam Padmavathy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Heavy-duty natural gas engines compliant with the 2010 EPA emissions standards have a clear advantage over diesel engines in meeting regulations with minimal after-treatment configuration. Heavy-duty natural gas engines are largely promoted as a cleaner burning engine with respect to low PM mass emissions. However, lack of sufficient data and literature on the exhaust emissions from advanced natural gas engines and the potential adverse health effects has raised concern amongst regulatory agencies. Also, the ammonia emissions from three-way catalyst equipped heavy-duty natural gas engines could be a major contributor to the formation of secondary PM in the atmosphere.;This CARB funded …