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Articles 1 - 9 of 9
Full-Text Articles in Medicine and Health Sciences
Real-Time Analysis Of Brain Tumor Cell Dynamics: Novel Thermoelectric Detection Of L-Glutamate And Cell Metabolism Using Microfluidics, Siva Mahesh Tangutooru
Real-Time Analysis Of Brain Tumor Cell Dynamics: Novel Thermoelectric Detection Of L-Glutamate And Cell Metabolism Using Microfluidics, Siva Mahesh Tangutooru
Doctoral Dissertations
This study describes the design, fabrication and applications of a novel thermoelectric microfluidic bio-sensor. The bio-sensor is used for real time detection of the L-glutamate (L-glu) dynamics and metabolism for brain tumor cells immobilized in a microfluidic device. The microfluidic device is fabricated using a polymer/glass laminating technique (Xurography). An antimony-bismuth thin-film thermopile (primary sensing element) is integrated to the microfluidic device. The brain tumor cells are immobilized over the thermopile covering measuring and reference junctions of the thermopile using a poly-l-lysine coating layer. L-glutamate oxidase (L-GLOD) is immobilized over the measuring junctions of the thermopile prior to the immobilization …
Effects Of Gender Composition Of Target And Sender Dyads On The Tendency To Infer Lies, Byron J. Simoneaux
Effects Of Gender Composition Of Target And Sender Dyads On The Tendency To Infer Lies, Byron J. Simoneaux
Doctoral Dissertations
Lying is so common in human behavior that some have labeled it a social skill. Despite the ubiquity of lies, humans have consistently been found to be poor lie detectors. Attempts have been made to improve the accuracy of human lie detection. Unfortunately, the most successful training only improves accuracy slightly above the level of chance. Because of its importance to society, considerable effort has been aimed at developing methods to help determine when people are lying. Researching how and why humans infer that another person is lying has the potential to advance the understanding of lie detection. Researchers have …
Development Of An Elementary School Background Noise, Amanda L. Mccann
Development Of An Elementary School Background Noise, Amanda L. Mccann
Doctoral Dissertations
The deleterious effects of noise on hearing, comprehension, and academic development have been widely studied. In an effort to accurately observe the effects of noise on specific listening environments, researchers have relied on commercially available forms of background noise. However, these commercially available recordings only contain adult speech and background noises associated with adult environments. A commercially available form of background noise that represents the sounds associated with elementary and middle schools are not readily available. Given that much effort has gone into examining the effects of background noise on classroom performance, it would appear prudent that a background noise …
Asymmetric Directional Microphone Fittings For Individuals With An Asymmetric Hearing Loss, Jessica White
Asymmetric Directional Microphone Fittings For Individuals With An Asymmetric Hearing Loss, Jessica White
Doctoral Dissertations
The present study investigated the effects of asymmetric directional microphone fittings on participants' acceptance of background noise and speech understanding in noise abilities. Thirteen adult, bilateral hearing aid users or non-hearing aid users with bilateral asymmetrical sensorineural hearing loss were fit binaurally with four different microphone conditions (i.e., bilateral omnidirectional, asymmetric directional poorer ear, asymmetric directional better ear, and bilateral directional) and monaurally with two microphone conditions (i.e., unilateral directional better ear and unilateral omnidirectional better ear). The amplification used was a pair of Siemens Intuis directional behind-the-ear hearing aids and comply earmolds.
The results indicated speech understanding in noise …
Bluetooth Headset Specifications And Its Possible Effects On Hearing Loss, Kristi Ann Anderson
Bluetooth Headset Specifications And Its Possible Effects On Hearing Loss, Kristi Ann Anderson
Doctoral Dissertations
The purpose of this study was to determine Bluetooth headset specifications and its potential effects on hearing loss. The following research questions were assessed: (1) what is the maximum peak output of various Bluetooth headsets coupled to a cellular phone; (2) what is the average output of various Bluetooth headsets coupled to a cellular phone; and (3) what is the frequency response of various Bluetooth headsets coupled to a cellular phone? Sixteen Bluetooth headset devices of various manufacturers were used for this study. Bluetooth headsets used for this study were determined by consumer demands and lack of output specifications provided …
The Effects Of Background Noise On Distortion Product Otoacoustic Emissions And Hearing Screenings, Amy E. Hollowell
The Effects Of Background Noise On Distortion Product Otoacoustic Emissions And Hearing Screenings, Amy E. Hollowell
Doctoral Dissertations
Hearing screenings are an important tool for identifying children who have, or are at risk for hearing loss in the schools. In light of a body of evidence that demonstrates the effectiveness of objective screening measures, such as otoacoustic emissions (OAEs), the American Speech Language and Hearing Association (ASHA) recommends traditional pure tone audiometric screening as the tool of choice for hearing screenings in the schools. Pure tone audiometric screenings conducted in the schools are problematic for a number of reasons, but the most significant is the presence of background noise which is routinely encountered. The main purpose of the …
The Evaluation Of Interhemispheric Transfer Time (Ihtt) In Adults, Katherine Elise Cormier
The Evaluation Of Interhemispheric Transfer Time (Ihtt) In Adults, Katherine Elise Cormier
Doctoral Dissertations
The goal of the present study was to develop an objective technique to measure interhemispheric transfer time (IHTT) of linguistic stimuli using late auditory evoked potentials to develop normative data in adults. Nine participants, five females and four males (M = 25.22) were included in this study. Each participant had their hearing tested and electrodes were placed on the forehead, tip of the nose, below the right eye and several places on the scalp. The results revealed that when comparing electrode sites (CZ, C3, and C4), waves (P1-N1-P2) and ears (right ear and left ear) there was no statistically significant …
Effects Of Cardiovascular Exercise On The Selection Of Preferred Listening Levels Using Ipods, Jessica Leigh Ann Newman
Effects Of Cardiovascular Exercise On The Selection Of Preferred Listening Levels Using Ipods, Jessica Leigh Ann Newman
Doctoral Dissertations
The present project evaluated the effect of cardiovascular exercise on the selection of preferred listening levels using iPods. The participants in this study included 15 Louisiana Tech University students ranging in age from 19 and 30 years. The inclusion criteria for participants was as follows: (1) normal hearing sensitivity; (2) no known neurological, cognitive, or otologic impairment; (3) removal from excessive noise for at least 48 hours prior to testing; and (4) endurance in running on a treadmill for the duration of ten minutes.
Pre-test audiometric thresholds and distortion product otoacoustic emissions (DPOAEs) were obtained in a sound treated booth. …
Linking Authentic Leadership To Positive Employee Health, Behavioral Engagement, And Job Performance, Yan Liu
Linking Authentic Leadership To Positive Employee Health, Behavioral Engagement, And Job Performance, Yan Liu
Doctoral Dissertations
In recent years, there has been increasing interest in the emerging field of positive organizational behavior. The field of Positive Organizational Behavior (POB) has its roots in the concept of "positive psychology" (Bakker & Schaufeli, 2008) but is more narrowly defined as "the study and application of positively oriented human resources strengths and psychological capacities that can be measured, developed, and effectively managed for performance improvement in today's workplace" (Luthans, 2002, p.698). More and more researchers have begun to emphasize what is right with people rather than focusing on what is wrong with people.
Given this opportunity, this dissertation explicitly …