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Transitions In Public Administration Theory Through Presidential Approaches To Healthcare Policy, Clifford Smith Blumberg Jan 2013

Transitions In Public Administration Theory Through Presidential Approaches To Healthcare Policy, Clifford Smith Blumberg

Public Affairs Theses - Archive

Through interdisciplinary research of twelve presidential administrations and their various approaches to national healthcare policy, a better understanding of the borderless transitions (which I term "melting points") within Public Administration Theory can be pursued. Can key components or characteristics of these transitions in Public Administration be revealed through a President's approach to healthcare policy?

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Experimental Study On The Effects Of Gaseous Contamination On It Equipment, Rahul Srinivas Raghunathan Jan 2013

Experimental Study On The Effects Of Gaseous Contamination On It Equipment, Rahul Srinivas Raghunathan

Mechanical and Aerospace Engineering Theses - Archive

Every company is trying to reduce their carbon footprint in today's world. The data center industry is no different. To reduce the cooling costs and increase the efficiency, air -side economizers are used. Air-side economizers bring in outside ambient cold air to cool the data center equipment. Through this, we can save on cooling costs. The problem relating to air-side economization is that we have no control over the humidity and contamination. Humidity and contamination go hand in hand, as one influence the other. In the past filters have been used to combat contamination but it has proved to be …

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Development Of Foil Thrust Bearing Test Rig, Rohit Harishchandra Yadav Jan 2013

Development Of Foil Thrust Bearing Test Rig, Rohit Harishchandra Yadav

Mechanical and Aerospace Engineering Theses - Archive

Oil lubricated bearings have been widely used in variety of turbo machinery, though it has its own limitations such as thermal degradation of oil over temperature, complicated oil lubrication system and their maintenance. Commercial application of the air foil bearing (AFB) in Microturbomachinery have been acknowledged. Microturbomachinery term is used in applications with shaft power less than 1000KW and shaft diameter less than 100mm. Microturbomachinery has demanded light weighted, compact, extreme temperature and high speed operation. DN number for oil lubricated bearings and rolling element bearings is very less when compared to foil bearings. Absence of external pressurizing and lubricating …

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Point Measurement Of Detonation Wave Propagation Using Ion Guage, Nitesh Karpakala Manjunatha Gupta Jan 2013

Point Measurement Of Detonation Wave Propagation Using Ion Guage, Nitesh Karpakala Manjunatha Gupta

Mechanical and Aerospace Engineering Theses - Archive

Accurate measurement of detonation wave velocity is important in the study of detonations. Detonation wave velocity is calculated by the ratio of distance between two transducers which the wave front travels over the propagation time. Conventional methods included transducers placed a few cm apart thereby yielding an average velocity of the wave. A gauge was developed in which the transducers were placed a few mm apart so that an effective point measurement of velocity can be determined. Different types of sensors used in determining the detonation wave velocity included pressure, flame and ion. Of the three, the ion sensor was …

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Effect Of Nanoparticle Dispersions In A Binary Nitrate Salt As Thermal Energy Storage Material In Concentrated Solar Power Applications, Bharath Dudda Jan 2013

Effect Of Nanoparticle Dispersions In A Binary Nitrate Salt As Thermal Energy Storage Material In Concentrated Solar Power Applications, Bharath Dudda

Mechanical and Aerospace Engineering Theses - Archive

Despite the huge improvements in the field of solar energy to produce electricity, the high cost of production has been one of the major problems in this field. Concentrated solar power (CSP) uses a number of mirrors to concentrate solar radiant energy onto a single focal point. Electrical power is produced when the concentrated light is converted to heat, which drives a heat engine connected to an electrical power generator. This heat is first stored in a thermal energy storage (TES) and transferred to a heat engine to be converted to electricity and thus TES can provide heat even after …

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Utilization Of Molten Nitrate Salt Nanomaterials For Heat Capacity Enhancement In Solar Power Applications, Ramaprasath Devaradjane Jan 2013

Utilization Of Molten Nitrate Salt Nanomaterials For Heat Capacity Enhancement In Solar Power Applications, Ramaprasath Devaradjane

Mechanical and Aerospace Engineering Theses - Archive

Concentrated solar power (CSP) system use general thermodynamic cycle to produce electricity and thus the system efficiency is mainly determined by the working temperature of heat transfer fluid (HTF). Organic-based HTFs (e.g., mineral oil, ethylene glycol, etc.) were firstly used for this application. However, this has limited the working temperature of CSP around 300 °C since these organic material starts to decompose below 400 °C. Typical liquid salts are thermally stable to high temperatures (500~600 °C). Using these salts as HTF can significantly increase the working temperature and as a result the system efficiency can also be highly enhanced. For …

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Integrated Modeling Approach For Solid Oxide Fuel Cell-Based Power Generating System, Jeongpill Ki Jan 2013

Integrated Modeling Approach For Solid Oxide Fuel Cell-Based Power Generating System, Jeongpill Ki

Mechanical and Aerospace Engineering Dissertations - Archive

Solid oxide fuel cell (SOFC) systems have been recognized as the most advanced power generation system with the highest thermal efficiency with a compatibility with a wide variety of hydrocarbon fuels, synthetic gas from coal, hydrogen, etc. As a result of research focused on numerical studies for a tubular type- or a planar type-SOFC, fuel flexibility, design aspects of SOFC, materials, start-up process, and so on, SOFC technologies are remarkably being developed.Currently, most research activities are limited to a component level characterization of single fuel cell stack or material research for catalyst, electrolyte, sealing process, etc. In other words, approaches …

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Development Of Computational Fluid Dynamics (Cfd) Based Erosion Models For Oil And Gas Industry Applications, Deval Pandya Jan 2013

Development Of Computational Fluid Dynamics (Cfd) Based Erosion Models For Oil And Gas Industry Applications, Deval Pandya

Mechanical and Aerospace Engineering Dissertations - Archive

Erosion prediction plays a critical role in different oil and gas industry segments including drill bit manufacturing, measurement & logging while drilling (M&LWD), and reservoir engineering/completions tools. Recently, Computational Fluid Dynamics (CFD) is used to predict erosion due to multiphase flows in complex geometries. Currently used CFD-based erosion models are able to predict erosion regions fairly accurately in various applications but they are highly inaccurate when it comes topredictions of quantities like erosion rate. Predicted quantities within an order of magnitude of the measured values are common and may be considered acceptable for many applications in the industry simply because …

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Advanced Materials Characterization Based On Full Field Deformation Measurements, A Paige Carpentier Jan 2013

Advanced Materials Characterization Based On Full Field Deformation Measurements, A Paige Carpentier

Mechanical and Aerospace Engineering Dissertations - Archive

Accurate stress-strain constitutive properties are essential for understanding the complex deformation and failure mechanisms for materials with highly anisotropic mechanical properties. Among such materials, glass-fiber- and carbon-fiber-reinforced polymer-matrix composites play a critical role in advanced structural designs. The large number of different methods and specimen types currently required to generate three-dimensional allowables for structural design slows down the material characterization. Also, some of the material constitutive properties are never measured due to the prohibitive cost of the specimens needed. This work shows that simple short-beam shear (SBS) specimens are well-suited for measurement of multiple constitutive properties for composite materials and …

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Multi-Objective Design Optimization Of Beol/Fbeol Region During Chip Attachment To Substrate, Hardik Parekh Jan 2013

Multi-Objective Design Optimization Of Beol/Fbeol Region During Chip Attachment To Substrate, Hardik Parekh

Mechanical and Aerospace Engineering Theses - Archive

Semiconductor industry has recognized the need to replace traditional Al/SiO2 interconnects with Cu/Low-k interconnects in the mainstream electronics devices following the latter's impact on power, RC delay, and cross-talk reduction. However due to lower elastic modulus, strength, and poor adhesion characteristic, reliability of the Cu/Low-k interconnects turns out to be a concern for its integration in the back-end-of-line (BEoL). Flip-chip attachment process (cooling from ~200C to room) can result in critical damage in nano-scale Cu/Low-k interconnects. The objective of this study is to improve the reliability of Cu/Low-k interconnects during die attach reflow process for a specific die to substrate …

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Design And Control Of A Smart Bed For Pressure Ulcer Prevention, Zachary Govier Brush Jan 2013

Design And Control Of A Smart Bed For Pressure Ulcer Prevention, Zachary Govier Brush

Mechanical and Aerospace Engineering Theses - Archive

This work details the design, simulation, and experimental testing of a mechanically actuated smart hospital bed for the prevention of pressure ulcers in hospital patients. The smart hospital bed, or Smartbed, is designed to improve the “turning” process currently performed by health care workers, ensuring that patients are turned consistently and decreasing the labor requirement for caregivers. The mechanical structure of the bed is described, along with its advantages over current Smartbed products. Next, dynamic models of the Smartbed actuating systems are discussed along with descriptions of the devised single-unit and overall bed control systems. The control equations determined in …

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Design And Evaluation Of A Chemical Reactor For The Pyrolysis Wood Pellets, Pawarat Bootpakdeetam Jan 2013

Design And Evaluation Of A Chemical Reactor For The Pyrolysis Wood Pellets, Pawarat Bootpakdeetam

Mechanical and Aerospace Engineering Theses - Archive

Currently there is interest in converting waste biomass into valuable products, such as fuels and specialty chemicals. However, the product composition, yield, the energy required to run the reaction, and the required residence time are all factors influence the economics of the process. Estimate of these factors at the laboratory scale is important for evaluating whether a pilot or demonstration scale study is warranted. In this work, a bench-scale chemical reactor was designed and constructed to conduct the batch pyrolysis of pelletized biomass. The reactor was tested using pine wood pellets as the feedstock. The feedstock weight to reactor volume …

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Optimal Design Of Beams, Shivakumar Samala Jan 2013

Optimal Design Of Beams, Shivakumar Samala

Mechanical and Aerospace Engineering Theses - Archive

Beams are basic structural components that are capable of withstanding load primarily by resisting bending. Unlike Euler-Bernoulli beams, Timoshenko beams undergo both shear deformation and rotational effects, making it suitable for analyzing the behavior of thick or short beams, composite beams and beams that are subjected to high frequency excitation when their wave length becomes shorter. This thesis work focuses on optimal design of straight and tapered Timoshenko beams under static and dynamic constraints for rectangular and circular cross sections. In this work Timoshenko beam static and dynamic equations were studied. The finite element method was used for static and …

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Study Of The Capabilities Of Electrowetting On Dielectric Digital Microfluidics (Ewod Dmf) Towards The High Efficient Thin-Film Evaporative Cooling Platform, Jagath B. Yaddessalage Jan 2013

Study Of The Capabilities Of Electrowetting On Dielectric Digital Microfluidics (Ewod Dmf) Towards The High Efficient Thin-Film Evaporative Cooling Platform, Jagath B. Yaddessalage

Mechanical and Aerospace Engineering Dissertations - Archive

With the current technological advancement, the size of the electronic components is being reduced to smaller and compact sizes. In the meantime, the packaging density and power consumption is ever increasing. To tackle this challenge, an efficient cooling technology is required.Thin-film evaporation is a very efficient cooling technology. A practical application using thin-film evaporation is a spray cooling which is known as the cooling method that can handle very high heat flux. However, a random spray of coolant cannot guarantee a thin coolant film, therefore either local dry-out or flooding may occur, which hampers cooling efficiency significantly. Moreover, bulky spraying …

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Airdata Sensor Based Position Estimation And Fault Diagnosis In Aerial Refueling, Hakki Erhan Sevil Jan 2013

Airdata Sensor Based Position Estimation And Fault Diagnosis In Aerial Refueling, Hakki Erhan Sevil

Mechanical and Aerospace Engineering Dissertations - Archive

Aerial refueling is the process of transferring fuel from one aircraft (the tanker) to another (the receiver) during flight. In aerial refueling operations, the receiver aircraft is exposed to nonuniform wind field induced by tanker aircraft, and this nonuniform wind field leads to differences in readings of airdata sensors placed at different locations on the receiver aircraft. There are advantages and disadvantages of this phenomenon. As an advantage, it is used as a mechanism to estimate relative position of the receiver aircraft inside the nonuniform wind field behind the tanker. Using the difference in the measurements from multiple identical sensors, …

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A Semi-Analytical Approach To Obtain Physical Fields In Heterogeneous Materials, Thanuuj S. Pathapallli Jan 2013

A Semi-Analytical Approach To Obtain Physical Fields In Heterogeneous Materials, Thanuuj S. Pathapallli

Mechanical and Aerospace Engineering Dissertations - Archive

Predicting the macroscopic response of heterogeneous materials has been the subject of extensive research in the engineering community, even more so, in the composites guild. With analytical solutions being almost impossible to obtain for such open ended problems, and numerical techniques being computationally expensive, semi-analytical methods are highly sought after. This dissertation is one such effort aimed at presenting a semi-analytical approach that serves as a confluence of effective analytical and numerical techniques, to solve for engineering fields in a heterogeneous material characterized by inclusions embedded in a matrix medium. The approach essentially involves the analytical derivation of permissible functions, …

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Prison Prerelease Facilities In Texas: What Effect Do These Programs Have On Offender Success?, Brittany Michelle Rodriguez Jan 2013

Prison Prerelease Facilities In Texas: What Effect Do These Programs Have On Offender Success?, Brittany Michelle Rodriguez

Public Affairs Dissertations - Archive

There is sufficient evidence to suggest that inmates who participate in prerelease programs are less likely to recidivate once released from prison than those who do not participate in these programs. Research shows that the impact of education, employment skills, and life skills while incarcerated helps contribute to an offender making positive choices that will prevent them from committing new crimes. Furthermore, researchers posit that these offenders have more opportunities for success then offenders who are released with no added programs. The major hypothesis for this study is that inmates in Texas who are released from a prerelease program have …

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Modeling The Impact Of Transportation On Public Health Using Fuzzy Logic, Binay Adhikari Jan 2013

Modeling The Impact Of Transportation On Public Health Using Fuzzy Logic, Binay Adhikari

Planning Theses - Archive

Research has proved that built environment affect public health in various ways ranging from direct impacts like physical activity to indirect impacts such as housing affordability, employment accessibility, social capital etc. Built environment is shaped by plans and policies related to transportation. Such plans and policies make significant impacts on public health. There is increasing interest on the effects of transportation decisions in public health. Recently, transportation planners and public health practitioners have begun to find ways to work collaboratively in varieties of capacities (APHA, 2011). However, two significant aspects related to impacts of transportation on public health need to …

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Effective Truancy Reduction Programs: How Is Success Defined?, Veronica Cole Jan 2013

Effective Truancy Reduction Programs: How Is Success Defined?, Veronica Cole

Public Affairs Dissertations - Archive

This research examines how stakeholders involved with the Dallas County Truancy Court measure and define the success of truancy reduction programs. Previous studies have failed to include the perceptions of all of these major stakeholders. Judges, non-profit organizations, parents, and principals from the six districts serviced within the Dallas County Truancy Court were interviewed to assess how success was measured within truancy reduction programs. Findings indicated the measure of success among stakeholders was not consistent. This study identified the barriers associated with developing a uniform definition of success among multiple stakeholders in a decentralized arrangement.

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Aggregate Relation Between Residence And Workplace Travel Time In Large Urban Areas, Azadeh Rahmani Jan 2013

Aggregate Relation Between Residence And Workplace Travel Time In Large Urban Areas, Azadeh Rahmani

Planning Theses - Archive

The formation of urban areas is a function of locations of residence and workplaces. Urban areas grow because more residents move in the area due to economic, life style, or other opportunities. This research presents a relationship between average commuting travel time and population and land area of metropolitan areas with more than 750,000 population in the United States. The hypothesis is that in spite of significant variation among large and small urban areas, the relative residence- employment locations follows a general and predictable pattern. Forty Metropolitan Statistical Areas (MSA) are selected for the analysis. The commuting travel time is …

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The Aesthetic Experiences Of Public School Teachers: A Study Of The Physical Environment Of Schools Through The Lens Of The Organizational Aesthetics Framework, Kenneth Clifford Goodwin Jan 2013

The Aesthetic Experiences Of Public School Teachers: A Study Of The Physical Environment Of Schools Through The Lens Of The Organizational Aesthetics Framework, Kenneth Clifford Goodwin

Public Affairs Dissertations - Archive

Related in part to the study of organizational culture, organizational aesthetics is concerned more with that level of culture that is represented through the symbols and artifacts found within an organization. Artifacts, as in the present study, can be represented by the larger physical environment in toto. The current study used a qualitative approach in applying the organizational aesthetics framework to explore teachers' perceptions of the aesthetics of the physical environment of public middle schools in the Fort Worth Independent School District (FWISD). No previously identified studies of schools have used the organizational aesthetics framework. Consequently, this study was covering …

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Narrowing The Sustainability Paradigm - How Meaningful Participation Builds Socially Equitable Communities, Megan L. O'Neal Jan 2013

Narrowing The Sustainability Paradigm - How Meaningful Participation Builds Socially Equitable Communities, Megan L. O'Neal

Planning Theses - Archive

This work contributes to the third leg of the sustainability paradigm by addressing socially equitable communities in the field of Planning. It uses a case study of neighborhood planning in Seattle, Washington as its basis for linking meaningful public participation with social capital. It uses a thoughtful qualitative framework to measure social capital in primary and secondary sources and bases these parameters with expert knowledge from scholars within the social science fields.

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An Exploration Of The Associations Among Corporate Sustainability Performance, Corporate Governance, And Corporate Financial Performance, Wenxiang Lu Jan 2013

An Exploration Of The Associations Among Corporate Sustainability Performance, Corporate Governance, And Corporate Financial Performance, Wenxiang Lu

Accounting Dissertations - Archive

This study examines the relationship between corporate governance and corporate sustainability performance (CSP), the relationship between corporate sustainability performance and corporate financial performance (CFP), and whether corporate governance moderates the CSP-CFP relationship. Corporate governance plays an important role in monitoring and counselling management's decision making including strategic sustainability investing. The study analyzes a sample of over 400 of the largest U.S. companies to examine corporate sustainability performance and corporate governance jointly. Four attributes of boards of directors are examined: board size, board independence, CEO duality, and female directors. The results show that all four board attributes are positively associated with …

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Public Budgeting With A Gender Lens: Fulton County, Georgia And San Francisco, California, Mercy K. Dena Jan 2013

Public Budgeting With A Gender Lens: Fulton County, Georgia And San Francisco, California, Mercy K. Dena

Public Affairs Dissertations - Archive

Public budgeting with a gender lens, also known as gender budgeting [GB], evaluates policies for their effects on men and women to promote gender equity. This research assesses GB in Fulton County, Georgia and San Francisco, California - the only two local governments in the United States [U.S.] that practice it. This study describes the adoption, implementation and impact of GB to fill a dearth of research on U.S. approaches within global GB literature. The study utilizes qualitative methods of focus group discussion, face-to-face and telephone interviews of county administrators and nonprofit agency representatives, as well as observation and secondary …

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Community Garden Suitability Analysis For A South Dallas Community, Tiffany Mcleod Jan 2013

Community Garden Suitability Analysis For A South Dallas Community, Tiffany Mcleod

Planning Theses - Archive

Community gardens have been proposed as a solution to combat the ongoing and escalating food desert problem in low-income communities. As planners, community leaders and residents look to implement this solution and convert vacant property into gardens they need to be aware of the potential conflicts that can arise when the area starts to develop. This paper offers an analysis tool and uses it to determine vacant sites that are appropriate for community gardens in a particular South Dallas neighborhood that do not conflict with the future development of the area. It also identifies the grocery store gap in the …

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The Factors That Influence The Development Of Performance Measures In Texas Counties, Julius Awuor Owino Jan 2013

The Factors That Influence The Development Of Performance Measures In Texas Counties, Julius Awuor Owino

Public Affairs Dissertations - Archive

Over the past few decades, governments have developed performance measurement systems with the objective of improving the quality and effectiveness of services delivered to the public. However, there is scant information about the factors that influence the development of performance measures in county governments because few studies have been carried out to determine the significance of the participation of stakeholders, the strategic planning, the use of incentives, and the availability of resources on the development of performance measures. The purpose of this study is to investigate the factors that influence the development of performance measures in Texas counties by addressing …

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Prison Prerelease Facilities In Texas: What Effect Do These Programs Have On Offender Success?, Brittany Michelle Rodriguez Jan 2013

Prison Prerelease Facilities In Texas: What Effect Do These Programs Have On Offender Success?, Brittany Michelle Rodriguez

Public Affairs Dissertations - Archive

There is sufficient evidence to suggest that inmates who participate in prerelease programs are less likely to recidivate once released from prison than those who do not participate in these programs. Research shows that the impact of education, employment skills, and life skills while incarcerated helps contribute to an offender making positive choices that will prevent them from committing new crimes. Furthermore, researchers posit that these offenders have more opportunities for success then offenders who are released with no added programs. The major hypothesis for this study is that inmates in Texas who are released from a prerelease program have …

Go to article

The Aesthetic Experiences Of Public School Teachers: A Study Of The Physical Environment Of Schools Through The Lens Of The Organizational Aesthetics Framework, Kenneth Clifford Goodwin Jan 2013

The Aesthetic Experiences Of Public School Teachers: A Study Of The Physical Environment Of Schools Through The Lens Of The Organizational Aesthetics Framework, Kenneth Clifford Goodwin

Public Affairs Dissertations - Archive

Related in part to the study of organizational culture, organizational aesthetics is concerned more with that level of culture that is represented through the symbols and artifacts found within an organization. Artifacts, as in the present study, can be represented by the larger physical environment in toto. The current study used a qualitative approach in applying the organizational aesthetics framework to explore teachers' perceptions of the aesthetics of the physical environment of public middle schools in the Fort Worth Independent School District (FWISD). No previously identified studies of schools have used the organizational aesthetics framework. Consequently, this study was covering …

Go to article

Public Budgeting With A Gender Lens: Fulton County, Georgia And San Francisco, California, Mercy K. Dena Jan 2013

Public Budgeting With A Gender Lens: Fulton County, Georgia And San Francisco, California, Mercy K. Dena

Public Affairs Dissertations - Archive

Public budgeting with a gender lens, also known as gender budgeting [GB], evaluates policies for their effects on men and women to promote gender equity. This research assesses GB in Fulton County, Georgia and San Francisco, California - the only two local governments in the United States [U.S.] that practice it. This study describes the adoption, implementation and impact of GB to fill a dearth of research on U.S. approaches within global GB literature. The study utilizes qualitative methods of focus group discussion, face-to-face and telephone interviews of county administrators and nonprofit agency representatives, as well as observation and secondary …

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Challenges Of Mixed-Use Developments : An Analysis Of Current Mixed-Use Developments In U.S.A., Gizachew Teferra Tesso Jan 2013

Challenges Of Mixed-Use Developments : An Analysis Of Current Mixed-Use Developments In U.S.A., Gizachew Teferra Tesso

Public Affairs Dissertations - Archive

There are numerous urban problems that could not be addressed in single use development. Mixed use development as a new theory claims to have the solutions to the urban issues associated with single use development. However, mixed used developments have been criticized for also failing to address their purported claims. This research focuses on analyzing and evaluating the tenets of mixed-use development to determine whether claims of accommodating mixed-income residents, increased density, improved racial diversity, provision of affordable housing, and improved employment trends are achieved. In doing so, 632 single use Block Groups and 84 mixed-use development Block Groups that …

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