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Articles 18601 - 18630 of 25686
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Correlation Of Sequence Stratigraphic Surfaces Of The Mid-Cretaceous Dakota Group From Subsurface To Outcrop Southern Denver Basin, Colorado., Yaqoub Y Y S M Alsayed Alrefaei
Correlation Of Sequence Stratigraphic Surfaces Of The Mid-Cretaceous Dakota Group From Subsurface To Outcrop Southern Denver Basin, Colorado., Yaqoub Y Y S M Alsayed Alrefaei
Earth & Environmental Sciences Theses - Archive
The D and J sandstone of the Cretaceous Dakota Group are considered as the major oil and gas producing units within in the Denver Basin. The distribution of these units in the Denver Basin is a sub-basin of the Early Cretaceous Western Interior Basin .These units are well understood within the northern Denver Basin and the linkage between the subsurface units and their equivalents in outcrop in the Front Range is well-established. They have gained less attention in southern parts of the basin and the linkage between the subsurface units and their equivalents in southern outcrop is not yet established. …
Chemostratigraphy And Paleoceanography Of The Mississippian Barnett Formation, Southern Fort Worth Basin, Texas, Usa, James Daniel Hoelke
Chemostratigraphy And Paleoceanography Of The Mississippian Barnett Formation, Southern Fort Worth Basin, Texas, Usa, James Daniel Hoelke
Earth & Environmental Sciences Theses - Archive
The Mississippian (Visean-Serpukhovian) Barnett Formation is a lithologic unit composed primarily of laminated siliceous mudstone and calcareous siliceous mudstone with significant phosphate and sulfide phases present. The Barnett Formation was deposited in the Fort Worth Basin, a marine foreland basin that formed as a result of the early Ouachita Orogeny from the collision of Laurasia and Gondwana. In this study we used a variety of geochemical methods to provide a detailed assessment of the chemostratigraphy and paleoceanography of the Barnett Formation in the southern end of the Fort Worth Basin in Texas. Various aspects of the Barnett Formation studied include: …
Thermal Maturity And Porosity Development During Catagensis In The Barnett Shale, Fort Worth Basin, Texas, Nathan Glondys
Thermal Maturity And Porosity Development During Catagensis In The Barnett Shale, Fort Worth Basin, Texas, Nathan Glondys
Earth & Environmental Sciences Theses - Archive
Unconventional resource plays are typified by significantly recoverable volumes of thermally mature hydrocarbons (oil, condensate and/or gases) trapped within a low permeability shale formation acting as source, reservoir and seal. These systems pose a scientific and engineering challenge to produce recoverable hydrocarbons from, chiefly due to their low permeabilities. There is growing evidence that secondary porosity in organic gas bearing shales is created during the thermal maturation of kerogen. A better understanding of porosity development during maturation of mobile organics during catagenesis may yield new insight on how we view these systems. A comparative analysis of the gas phase(s), peak …
The Rise Of Glocal Generation Y: How Its Personality And Psychological Contract Is Affected By Global Forces And Local Context, Seyedeh Hoda Vaziri Bozorg
The Rise Of Glocal Generation Y: How Its Personality And Psychological Contract Is Affected By Global Forces And Local Context, Seyedeh Hoda Vaziri Bozorg
Management Theses - Archive
When Generation Y started to enter the workforce in the early 2000s, discussions about their characteristics and their impact on organizations began among scholars around the world. A question has been raised whether the generational shift seen around the world shares common characteristics and whether globalization and technology advancement have lead to a Global Generation Y. This thesis criticizes the idea of Global Generation Y, and defines the concept of Glocal Generation Y, which is influenced by global forces but reacts differently based on its local context. However, there are still some common characteristics that can be used by human …
Are Coworkers Good Soldiers Or Good Actors?, Tae Seok Yang
Are Coworkers Good Soldiers Or Good Actors?, Tae Seok Yang
Management Dissertations - Archive
Drawing from attribution theory, I propose a field study which develops and tests a model to describe (1) how individuals use multiple observations of coworker behavior to form attributions about whether beneficial behaviors have self-serving or prosocial motives, (2) how the attributions regarding the motive for coworker behavior (self-serving or prosocial) moderate the influence of organizational citizenship behaviors on affect toward that coworker, and finally, (3) how such affect toward a coworker translates into more distal performance-related evaluations of coworkers. Specifically, two attribution cues, distinctiveness and consistency, are considered as mechanism through which coworkers form beliefs about the motives for …
Socioeconomic Background And Parental Values: An Examination Of Approaches To Bureaucratic Discretion At The Street-Level, Jesse R. Booher
Socioeconomic Background And Parental Values: An Examination Of Approaches To Bureaucratic Discretion At The Street-Level, Jesse R. Booher
Public Affairs Theses - Archive
Scholarly literature on policy implementation at the street-level generally focuses on how workers act in response to external pressures. Pressures can include policy rules, organizational culture, and the identities of the clients. Academia has produced scant work, however, examining how the identities and backgrounds of street-level bureaucrats influence their approach to the discretion inherent in their jobs. This study seeks to fill that literary gap. Using semi-structured interviews with street-level bureaucrats in North Texas, the study yields two strong relationships. First, a relationship exists between the participants' socioeconomic backgrounds as children and how they approach discretion inherent to street-level bureaucracy. …
Data Sharing Between Transportation Planning And Public Health: Issues And Opportunities Using A Regional Eco-Logical Framework, Michele Berry
Data Sharing Between Transportation Planning And Public Health: Issues And Opportunities Using A Regional Eco-Logical Framework, Michele Berry
Public Affairs Theses - Archive
Transportation planning has been shown to strongly impact public health yet collaboration and data or information sharing between the two communities is lacking. The Eco-Logical approach is a potential solution designed to advance transportation planning through an integrated planning process that includes other stakeholders. However, since the Eco-Logical approach provides no guidance on forming collaborations, network theory will be used to fill this hole. Both the Eco-Logical approach and network theory place heavy emphasis on information sharing and data exchange. This study will examine the current status of data sharing between transportation planning and public health through an analysis of …
High School Influences On College Enrollment And College Graduation Of Dallas Independent School District 2002 Graduates, Linda K. Johnson
High School Influences On College Enrollment And College Graduation Of Dallas Independent School District 2002 Graduates, Linda K. Johnson
Public Affairs Dissertations - Archive
The overarching goal for American education under President Barack Obama has been to increase college enrollment and completion rates. The pressure to achieve this goal has been keenly felt in the postsecondary community, especially as federal and state funding have become increasingly tied to achieving higher college completion rates. Yet the adequate preparation of students lies primarily in the secondary system, and the literature contains many statistics that support the view that few students are adequately prepared, especially those who are educated in urban public school systems. The challenge was to determine actions that can be implemented by school districts …
The Emergence Of Women City Managers In Texas In The Late 20th Century And The Early 21st Century, Helen Kay Godbey
The Emergence Of Women City Managers In Texas In The Late 20th Century And The Early 21st Century, Helen Kay Godbey
Public Affairs Dissertations - Archive
The first generation of women city managers in the late 20th Century and early 21st Century have one thing in common: all were initially mentored and promoted by men. Like survivors of a Texas tornado that huddle in the closet and then peek out to see what is left of the world around them, these few women who became the first generation of assistant or city managers began to look around for other women who had also done so. Even though there were just a few, they began to mentor each other. I would propose that an enlightened public administration …
A Highly Linear Voltage Controlled Oscillator With Low Power Dissipation, Sourabh Sharma
A Highly Linear Voltage Controlled Oscillator With Low Power Dissipation, Sourabh Sharma
Electrical Engineering Theses - Archive
A voltage controlled oscillator using 90 nm CMOS technology has been presented with the extremely low power dissipation of 1.35 mW and provides 1.45 mW (with use of buffers) output AC power. It has highly linear voltage to frequency transformation, with only 4.85% of maximum error this VCO Works in the long range from 5.1 to 9.099 GHz while the controlling voltage varies from 0 to .5 volts, The oscillator is powered by a 1 volt power supply.
Improvement In The Performance Of 3g Wireless Communications Systems Using An Ica Based Signal Processing Block, Winston Dsouza
Improvement In The Performance Of 3g Wireless Communications Systems Using An Ica Based Signal Processing Block, Winston Dsouza
Electrical Engineering Theses - Archive
In this thesis, we have implemented a signal processing block in the receiver of a third generation (3G) cellular system to provide improvement in the quality of service. Each block of the cellular system, including the complete transmitter, channel and the receiver is implemented in Matlab. The multiplexing scheme is implemented using wideband code division multiple access (WCDMA). The signal processing block is based on the concept of independent component analysis (ICA), and a rake receiver is used at the receiver to mitigate inter symbol interference due to the multi-paths. The signal processing block (SPB) is further extended to a …
Microarray Image Denoising Using Complex Gaussian Scale Mixtures Of Complex Wavelets, Lakshmi Srinivasan
Microarray Image Denoising Using Complex Gaussian Scale Mixtures Of Complex Wavelets, Lakshmi Srinivasan
Electrical Engineering Theses - Archive
The scientific world has witnessed an explosion in the development of comprehensive and high-throughput methods for molecular biology experimentation. High density DNA microarray technology, allows researchers to monitor the expression levels of thousands of genes in an organism simultaneously, to characterize geneticdiseases at the molecular level and to direct new treatment for specific cellular aberrations. The microarray analysis is rapidly becoming a standard research tool. But, the images produced by microarray experiments, are not perfect and includes noisysources, that contaminate them during the various stages of its formation. These microarray images need to be denoised to ensure reliable and accurate …
Online Learning Algorithms For Differential Dynamic Games And Optimal Control, Kyriakos G. Vamvoudakis
Online Learning Algorithms For Differential Dynamic Games And Optimal Control, Kyriakos G. Vamvoudakis
Electrical Engineering Dissertations - Archive
Optimal control deals with the problem of finding a control law for a given system that a certain optimality criterion is achieved. It can be derived using Pontryagin's maximum principle (a necessary condition), or by solving the Hamilton-Jacobi-Bellman equation (a sufficient condition). Major drawback of optimal control is that it is offline. Adaptive control involves modifying the control law used by a controller to cope with the facts that the system is unknown or uncertain. Adaptive controllers are not optimal. Adaptive optimal controllers have been proposed by adding optimality criteria to an adaptive controller, or adding adaptive characteristics to an …
Compressive Sensing And Wireless Network Capacity With Performance Analysis, Davis Kirachaiwanich
Compressive Sensing And Wireless Network Capacity With Performance Analysis, Davis Kirachaiwanich
Electrical Engineering Dissertations - Archive
This dissertation contains five reseach topics. In chapter 1, the performances of a noncoherent slow frequency-hopping system with M-ary frequency-shift-keyed modulation (NC-FH/MFSK) under various hostile jamming strategies are studied. Then, the knowledge obtained is used in developping a new "combined-jamming" interference model. The model can be used in analyzing the performance of NC- FH/MFSK networks, where transmissions from each network node can interfere with one another. An example application of the proposed model is the channel assignment in a multiradio FH/MFSK wireless mesh network (MR-FH/MFSK WMN). In chapter 2, the multiradio frequency-hopping wireless mesh networks (MR- WMN) is still being …
Guided-Mode Resonance Devices: Omnidirectional Reflectors, Wideband Absorbers, Sensors And Narrowband Filters, Wenhua Wu
Electrical Engineering Theses - Archive
In this thesis, a series of guided-mode resonance (GMR) devices are developed and optimized in the optical spectral region. Some of these devices are designed by inverse algorithms such as genetic algorithm and particle swarm optimization. One-dimensional subwavelength silicon and germanium gratings providing high omnidirectional reflectivity within specific band are designed respectively for TE and TM polarization. A simple amorphous silicon waveguide grating is proposed to enhance the absorbance for solar cells by 60% comparing with unpatterned structure. Another presented grating absorbs light nearly totally in the ~ 0.3-0.6 ìm wavelength band for all incidence angles independent of polarization, namely …
An Experimental Test Of Extended Contact Hypothesis: Its Boundary Conditions And Psychological Processes, Patricia A. Lyons
An Experimental Test Of Extended Contact Hypothesis: Its Boundary Conditions And Psychological Processes, Patricia A. Lyons
Psychology Dissertations - Archive
The extended contact hypothesis states that contact with an ingroup member, who has an outgroup friend, facilitates favorable outgroup attitudes (Wright, Aron, McLaughlin-Volpe, & Ropp, 1997). An experimental manipulation examined the hypothesis' assumption that ingroup identity salience facilitates extended contact effectiveness, the effect of national ingroup identity strength as a moderator of extended contact, and the hypothesized mediators of extended contact in the context of U.S. citizens' evaluations toward Arab immigrants in the United States, compared to Latino and European immigrants. Ninety, White females (Mean age = 21.33) were randomly assigned to conditions of extended contact with an ingroup partner …
What About Blog? Problematic Internet Use And Personality In Bloggers, Kathryn Hyde Rollings
What About Blog? Problematic Internet Use And Personality In Bloggers, Kathryn Hyde Rollings
Psychology Dissertations - Archive
The purpose of the current study was to compare bloggers' personalities to the personalities of non-bloggers, and to determine whether it is possible to identify individuals who are more likely to use the Internet in a problematic way. A sample of bloggers (N = 231) and non-bloggers (N = 248) completed a series of online surveys including the Big Five Inventory (BFI), the Online Cognition Survey (OCS), and a questionnaire about general Internet use. I found that bloggers scored significantly higher on the Big Five Trait Openness to Experience than did non-bloggers. Bloggers also reported higher scores of the Distraction …
Finally, My Thesis On Academic Procrastination, Justin Mccloskey
Finally, My Thesis On Academic Procrastination, Justin Mccloskey
Psychology Theses - Archive
References to procrastination have been dated back to as long as 3,000 years ago. However, research on procrastination is ironically enormously behind the curve in active research on its antecedents and effects. Academic procrastination is a unique outlet of procrastinatory tendencies and is the object of much less scientific research. Academic procrastination occurs when students needlessly delay completing projects, activities or assignments and has been linked to lower academic grades, poorer well-being, and more stress. Studies have found procrastination to be a vital predictor of success in college and the development of a scale upon which to measure it could …
Effect Of Number Of Ideas And Folders On Idea Generation In Groups, Lauren E. Arditti
Effect Of Number Of Ideas And Folders On Idea Generation In Groups, Lauren E. Arditti
Psychology Theses - Archive
Electronic brainstorming is a method developed to take advantage of the positive effects of collective ideation, such as cognitive stimulation, while decreasing production blocking and social loafing. Research indicates that as group size increases so does the total number of ideas generated. Yet, as groups get larger, brainstormers may succumb to cognitive overload and no longer benefit from the cognitive stimulation of other group members. To counter this potential source of production loss, the use of folders has been developed. Folders are a means of collecting ideas and distributing them among group members in smaller more manageable sets. However, studies …
Examining The Impact Of Opioid Withdrawal On Pain Processing: The Influence Of Social Isolation Stress, Megan Lynne Uhelski
Examining The Impact Of Opioid Withdrawal On Pain Processing: The Influence Of Social Isolation Stress, Megan Lynne Uhelski
Psychology Dissertations - Archive
The use of opioids as a traditional treatment for acute and chronic pain has been severely hindered by the addictive nature of these substances and the pain relief they provide. Clinical reports suggest that opioid addicts are hypersensitive to pain during abstinence, and this effect may persist for months afterward. Examinations of nociceptive processing during opioid withdrawal in rodents have produced mixed results, with little evidence of decreased thresholds or latencies to noxious stimuli. To date, no studies have explicitly evaluated pain affect during the withdrawal period. Therefore, the purpose of the current study was evaluate both sensory and affective …
Examining The Role Of Need For Closure In Psychological Distress Following Genetic Testing For Breast Cancer, Ifeoluwa Togun
Examining The Role Of Need For Closure In Psychological Distress Following Genetic Testing For Breast Cancer, Ifeoluwa Togun
Psychology Dissertations - Archive
The present study investigated the relationship between Need for Closure (NFC) and psychological distress after receiving the results of genetic tests for breast cancer. One hundred and eight women recruited from the Cancer Genetics Program at the University of Pittsburgh Cancer Institute and Magee-Women's Hospital participated in the study. The women were assessed four times in all, once before receiving their test results (baseline) and three times after at one week, 3 months and 6 months. The results suggested that the testing situation itself does not lead to distress. Distress following genetic test results is related to an individual's attitude …
The Effect Of Morphine On Dopamine Neuron Activation In Males And Cycling Females, Micah Eimerbrink
The Effect Of Morphine On Dopamine Neuron Activation In Males And Cycling Females, Micah Eimerbrink
Psychology Theses - Archive
The aim of this study was to evaluate the influence of estrogen on the electrophysiological response of ventral tegmental area (VTA) dopamine (DA) neurons to morphine (10 mg/kg; IP) in experimentally naïve adult male and intact adult female cycling Sprague-Dawley rats. Five groups were studied: males, proestrus females, estrus females, metestrus females, and diestrus females. Continuous 40 minute recordings were collected for each animal (5 minutes baseline, 5 minutes after a saline (0.9% NaCl) injection, and 30 minutes after morphing injection (10 mg/kg)). Results showed significant increases in VTA DA activity in the Metestrus and Male groups, no significant differences …
Generations: The Dividing Line Between Preferences For Leadership Styles, Alysia Annette Bransford
Generations: The Dividing Line Between Preferences For Leadership Styles, Alysia Annette Bransford
Psychology Theses - Archive
This research examined what effects the characteristics of the Millennial generation had on the preferences for leadership style by investigating which qualities in leaders were more highly valued within this generational cohort. The Millennial generations' (i.e., individuals born between 1980 and 2000) potential preferences towards four leadership styles (i.e., charismatic, ideological, pragmatic, and servant) versus that of non-Millennials (i.e., individuals born before 1980) were investigated. In addition, this study investigated how Millennials' locus of control affects their leader preference. Two 2 x 3 Mixed ANCOVAs were run to assess leadership preferences between the two generational groups. Multiple regressions were run …
Asynchronous Idea Generation, Runa Korde
Asynchronous Idea Generation, Runa Korde
Psychology Theses - Archive
The studies examined the role of providing review sessions during a brainstorming task. Participants were asked to generate ideas either as pair or individually. It was expected that participants who were provided time to review their own as well as their partners' ideas would generate more ideas than those who were not provided a separate review session. Additionally, it was expected that when the review session was provided, participants who generated ideas alone would perform better than those who generated ideas as a pair. Results of Study 1 supported these hypotheses. Study 2 was conducted to understand the factors that …
Heat Transfer In Triangular Ducts With Axial Conduction,Containing Porous Medium, Abhishek Banerjee
Heat Transfer In Triangular Ducts With Axial Conduction,Containing Porous Medium, Abhishek Banerjee
Mechanical and Aerospace Engineering Theses - Archive
The objective of this study is to find a numerical solution for the velocity and temperature field in a duct of triangular cross-section area. A fully saturated porous medium is considered to be present in the duct. The study reports the contribution of axial conduction in heat transfer to flow passing through triangular porous passages. The terms in x-direction are retained in the energy equation due to the presence of axial conduction. Also, because of the geometrical asymmetry, non-orthogonal boundary conditions can exist and thus make the determination of heat transfer more difficult. The problem under consideration uses H2 boundary …
Nonlinear Finite Element Analysis Of Columns, Rajkiran Muppavarapu
Nonlinear Finite Element Analysis Of Columns, Rajkiran Muppavarapu
Mechanical and Aerospace Engineering Theses - Archive
In many engineering applications structural components are considered to be beams or columns subjected to a range of external loads such as dead weight, wind, temperature changes etc.In this work a mathematical model has been developed for a sports lighting tower considering it to be a cantilever beam with large deformation. The concept of non-linear P-Delta analysis is applied to the column. Using this model, a tower analysis tool was developed in MATLAB. Using this tool various design alternatives can be examined to evaluate their suitability to a particular task.A number of example problems from the available literature were solved …
Transatlantic Brinksmanship: The Anglo-American Alliance And Conservative Ideology, 1953-1956, David M. Watry
Transatlantic Brinksmanship: The Anglo-American Alliance And Conservative Ideology, 1953-1956, David M. Watry
History Dissertations - Archive
The purpose of this transatlantic dissertation is to produce a new post-revisionist history of Anglo-American relations from 1953 to 1956 that seriously re-assesses Eisenhower's "middle path" foreign policy and the differing responses to it from Churchill and Eden. This reexamination challenges the notion that Eisenhower's foreign policy represented a mere continuation of Truman's containment policy or a "middle path" between Democrats and far-right Republicans. Instead, Eisenhower intentionally adopted a distinctly far-right Republican foreign policy that overwhelmed two Conservative British prime ministers and accelerated the end of the British Empire. This transatlantic history argues that American foreign policy went from one …
Study Of The Response Of The Atlas Tile Calorimeter To Muons Produced In Sqrt(S) = 7 Tev Proton-Proton Collisions At The Lhc, Pierce Ben Weatherly
Study Of The Response Of The Atlas Tile Calorimeter To Muons Produced In Sqrt(S) = 7 Tev Proton-Proton Collisions At The Lhc, Pierce Ben Weatherly
Physics Theses - Archive
The purpose of this study is to verify the inter-calibration of the cells and uniformity of the Tile Calorimeter (TileCal) detector in the ATLAS experiment at CERN. The response using muons produced in proton-proton collisions at sqrt(s)= 7 TeV is identified. Muons are efficient calibration tools because they are minimum ionizing particles that deposit nearly constant energy in the calorimeter for a wide range of particle energies. In this study, the tracks of the muons are extrapolated through the calorimeter, and their path lengths through TileCal cells are calculated. The energy, path length, and dE/dx response of the cells are …
Investigations In The Impact Of Visual Cognition And Spatial Ability Of Student Comprehension Of Physics And Space Science, Ximena Clara Cuicatl Cid
Investigations In The Impact Of Visual Cognition And Spatial Ability Of Student Comprehension Of Physics And Space Science, Ximena Clara Cuicatl Cid
Physics Dissertations - Archive
Physics and Space Science examine topics that are highly spatial in nature. Students are required to visualize a system, manipulate that system, and then solve a given problem. Doing all of this, simultaneously, can lead to a cognitive overload where the student is unable to correctly solve the problem. Some difficulties may be rooted in conceptual difficulties, whereas other difficulties may arise from issues with spatial intelligence and visual cognition. In some cases, students might have created an incorrect mental image of the problem to begin with, and it's this misconception, not the lack of content knowledge, that has caused …
Study Of Jet And Missing Transverse Energy Performance In Dijet Events With Atlas Data, Sushmita Sahu
Study Of Jet And Missing Transverse Energy Performance In Dijet Events With Atlas Data, Sushmita Sahu
Physics Theses - Archive
The Large Hadron Collider(LHC) is the world's largest particle collider at CERN, Geneva, operating at a center of mass energy of 7 TeV . The Toroidal LHC Apparatus (ATLAS)is one of two general purpose detectors at the LHC. It is responsible for measuring particles produced in proton-proton collisions and to search for new particles. The High Energy Physics group at UTA has been involved with designing, construction and commissioning of the ATLAS Tile Calorimeter, one of the sub-detectors of ATLAS. One of the components of Tile Cal, the Intermediate Tile Calorimeter (ITC) was constructed at UTA. UTA has been actively …