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2010

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Study On Intumescent Flame Retarded Polystyrene Composites With Improved Flame Retardancy, Hongdian Lu, Charles A. Wilkie Dec 2010

Study On Intumescent Flame Retarded Polystyrene Composites With Improved Flame Retardancy, Hongdian Lu, Charles A. Wilkie

Chemistry Faculty Research and Publications

The flame retardancy and thermal stability of ammonium polyphosphate/tripentaerythritol (APP/TPE) intumescent flame retarded polystyrene composites (PS/IFR) combined with organically-modified layered inorganic materials (montmorillonite clay and zirconium phosphate), nanofiber (multiwall carbon nanotubs), nanoparticle (Fe2O3) and nickel catalyst were evaluated by cone calorimetry, microscale combustion calorimetry (MCC) and thermogravimetric analysis (TGA). Cone calorimetry revealed that a small substitution of IFR by most of these fillers (≤2%) imparted substantial improvement in flammability performance. The montmorillonite clay exhibited the highest efficiency in reducing the peak heat release rate of PS/IFR composite, while zirconium phosphate modified with C21H26 …

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Complexity And Power Consumption In Stochastic Iterative Decoders, Keyur M. Payak Dec 2010

Complexity And Power Consumption In Stochastic Iterative Decoders, Keyur M. Payak

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Stochastic iterative decoding is a novel method to decode the bits received at the end of a communication channel and to control the rate of error happening in the message bits due to noise being injected into the channel. This decoder uses stochastic computation that is based on manipulation of probabilities from a random sequence of digital bits. Hardware needed for implementing this arithmetic is very simple and can be completely implemented using simple digital complementary metal oxide gates. This helps the decoder to be technology independent, which is a major advantage over its digital and analog counterparts, which are …

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Effect Of Mica Content On Surface Infiltration Of Soils In Northwestern Kern County, California, Steven Keyes Stakland Dec 2010

Effect Of Mica Content On Surface Infiltration Of Soils In Northwestern Kern County, California, Steven Keyes Stakland

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A soils infiltration rate (IR) is the measured rate that soil is able to absorb water, either from precipitation or irrigation. A low IR can cause damage to crops if the necessary amount of water cannot penetrate to the plant roots in the time needed. The damage can be common in permanent plantings such as almond and pistachio orchards where regular tillage is avoided. This indicates a physical aspect to the problem because tillage increases IR. However, there is also an electrochemical side to infiltration problems because certain calcium surfactant treatments can increase IR. Various other methods have been used …

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Plasticity And Damage In Bimodal Grain Size Al-5083: Microstructural Finite Element, Steven Nelson Dec 2010

Plasticity And Damage In Bimodal Grain Size Al-5083: Microstructural Finite Element, Steven Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bimodal and nanocrystalline aluminum alloys are being investigated as stronger replacements for conventional polycrystalline aluminum alloys. Higher strengths are achieved by reducing the grain size of a metal; however, as the grain size is reduced the ductility diminishes. One solution that limits this decrease in ductility is the addition of a few microcrystalline grains into a nanocrystalline alloy, creating a bimodal microstructure that offers a better balance of strength and ductility. Two- and three-dimensional microstructural finite element (FE) simulations of monotonic and fatigue failures in Al-5083 having bimodal grain structures are conducted. To reduce the computational time and facilitate the …

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An Investigation Of Process Parameters To Optimize The Fiber Diameter Of Electrospun Vascular Scaffolds Through Experimental Design, Steffi Wong Dec 2010

An Investigation Of Process Parameters To Optimize The Fiber Diameter Of Electrospun Vascular Scaffolds Through Experimental Design, Steffi Wong

Biomedical Engineering

No abstract provided.

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Characterization And Analysis Techniques Of A Dynamic In Vitro Blood-Brain Barrier Model, Ryan Everett Woodhouse Dec 2010

Characterization And Analysis Techniques Of A Dynamic In Vitro Blood-Brain Barrier Model, Ryan Everett Woodhouse

Biomedical Engineering

The blood-brain barrier (BBB) is responsible for maintaining the sensitive environment required by the brain. Although the BBB is necessary for proper functioning of the brain, it acts as an obstacle for doctors attempting to treat neurological disease. For a drug to act upon the brain, it must first pass through the discriminating BBB. For this reason, much research has been performed in recent years in order to create an in vitro model of the BBB on which drugs targeted for the central nervous system may be tested. The main goal of this project is to create an in vitro …

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Assessing The Variation Of Driver Distraction With Experience--- Research Extension, Pradeep Thummala Dec 2010

Assessing The Variation Of Driver Distraction With Experience--- Research Extension, Pradeep Thummala

Graduate Theses, Dissertations, and Problem Reports (ETD)

Deviating attention from the complex task of driving can be distraction. Driving requires the scanning of the road environment (front, sides and back), as well as monitoring dashboard and navigational tools. Shorter eye glance durations away from road are used for better scanning of roadside hazards, compared to longer eye glances that are riskier and considered distraction.;Defining distraction as looking away from roadway for more than 2 seconds, this research analyses eye glances away from roadway for more than 2 seconds, 2.5 seconds and 3 seconds using variables such as total glance duration away from roadway, percentage glance duration away …

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Estimation Of Fracture Properties For A Horizontal Well With Multiple Hydraulic Fractures In Gas Shale, Ayodeji L Aboaba Dec 2010

Estimation Of Fracture Properties For A Horizontal Well With Multiple Hydraulic Fractures In Gas Shale, Ayodeji L Aboaba

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research work presents a new method for estimating fracture properties for a horizontal well with multiple hydraulic fractures in shale gas reservoirs. This method utilizes the production data obtained during the linear flow period to provide reliable estimates of both fracture half-length and formation permeability.;The new method provides an excellent alternative to the conventional pressure transient analysis methods. It requires neither the existence of the elliptical flow nor the pseudoradial flow periods and thus reduces the impractical long times required for well testing in horizontal wells drilled in shale gas reservoirs. The conventional pressure transient analysis methods require an …

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Quantification Of Uncertainty Associated With Injecting Carbon Dioxide, And Design Of Ecbm Reservoir In Appalachian Basin Coals, Jesma Mohan Dec 2010

Quantification Of Uncertainty Associated With Injecting Carbon Dioxide, And Design Of Ecbm Reservoir In Appalachian Basin Coals, Jesma Mohan

Graduate Theses, Dissertations, and Problem Reports (ETD)

There are tremendous coal bed methane resources throughout the world. However, with conventional production methods, 40-80% of methane is left behind as unrecoverable. Enhanced coal bed methane (ECBM) recovery by injection of Carbon dioxide (CO2) is motivated by the dual benefits of improved gas recovery and green house gas storage. In practice, this technology is relatively new, still in the early stage of development, and the economic performance of ECBM has yet to be verified. Due to the complexity of CBM reservoirs, the production performance involves significant uncertainties. It is imperative to quantify the uncertainty of production performance in order …

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Design And Development Of A Prototype Of Dual Modality Pet/Optical Breast Cancer Margin Specification Imager, Krishna Nandanavanam Dec 2010

Design And Development Of A Prototype Of Dual Modality Pet/Optical Breast Cancer Margin Specification Imager, Krishna Nandanavanam

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis is an attempt to develop a prototype of a breast cancer imager to assess the margins of excised breast tissue. This device is proposed to be used to assure that the entire cancerous lesion has been removed by imaging the intensity of a radio labeled tracer and inspecting for a noncancerous margin in the volume of the tissue sample. The dual modality PET/optical breast cancer specification imager uses a pair of small PET detectors to measure the bioactivity of an excised sample of tissue. A co-registered optical image is taken to allow the surgeon to visually correlate the …

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A Study On Physical Factors That May Influence The Spread And Occurrence Of Influenza, Kedar V. Panday Dec 2010

A Study On Physical Factors That May Influence The Spread And Occurrence Of Influenza, Kedar V. Panday

Graduate Theses, Dissertations, and Problem Reports (ETD)

Influenza is one of respiratory infections causing the highest morbidity and mortality rates. Every day tens of millions of people suffer from virus infection worldwide with varying severity and with a high economic impact. Influenza transmission from person to person occurs in various ways. This study is an attempt to understand airborne transmission in indoor locations by examining the relation between environmental parameters such as temperature and relative humidity with the number of influenza like illness (ILI) cases. It is proposed that the pattern of influenza activity is primarily a function of indoor relative humidity in temperate regions. This conclusion …

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Reframing Antitrust In Light Of Scientific Revolution: Accounting For Transaction Costs In Rule Of Reason Analysis, Alan J. Meese Dec 2010

Reframing Antitrust In Light Of Scientific Revolution: Accounting For Transaction Costs In Rule Of Reason Analysis, Alan J. Meese

Faculty Publications

This Article contends that modern rule of reason analysis, informed by workable competition’s partial equilibrium trade-off paradigm, is suitable for evaluating only a subset of agreements that may reduce transaction costs. The Article distinguishes between “technological” and “non-technological” transaction costs. Technological transaction costs entail the bargaining and information costs first emphasized by Ronald Coase, while non-technological transaction costs result from more fundamental departures from perfect competition, departures creating a risk of opportunism that accompanies relationship-specific investments. Modern law does accurately assess restraints that may reduce technological transaction costs—costs that are analogous to the sort of production costs recognized by the …

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Multi-Threshold Cmos Circuit Design Methodology From 2d To 3d, Ross Josiah Thian Dec 2010

Multi-Threshold Cmos Circuit Design Methodology From 2d To 3d, Ross Josiah Thian

Graduate Theses and Dissertations

A new and exciting approach in digital IC design in order to accommodate the Moore's law is 3D chip stacking. Chip stacking offers more transistors per chip, reduced wire lengths, and increased memory access bandwidths. This thesis demonstrates that traditional 2D design flow can be adapted for 3D chip stacking. 3D chip stacking has a serious drawback: heat generation. Die-on-die architecture reduces exposed surface area for heat dissipation. In order to reduce heat generation, a low power technique named Multi-Threshold CMOS (MTCMOS) was incorporated in this work. MTCMOS required designing a power management unit (to control when and which gates …

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The Gorilla And The Cuttlefish., Nick Karl 1982- Dec 2010

The Gorilla And The Cuttlefish., Nick Karl 1982-

Electronic Theses and Dissertations

The new work I have developed while pursuing my Masters in Art at the University of Louisville is strongly based on the narrative. I have always used the imagery in my work as social commentary. The stories and images I develop are to be viewed as a window on the world through my eyes, but for the first time I have focused on one clear concept. In this case, questioning how we developed from a group of hunter-gatherers scouring the land for survival, to modern consumers, destroying the world around us. In order to facilitate this narrative, I wrote a …

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The Four-Year Experience Of First-Generation Students At A Small Independent University : Engagement, Student Learning, And Satisfaction., David M. Mahan Dec 2010

The Four-Year Experience Of First-Generation Students At A Small Independent University : Engagement, Student Learning, And Satisfaction., David M. Mahan

Electronic Theses and Dissertations

This dissertation explored the four-year college experience of first-generation and continuing-generation students at a small private institution. Using Astin's I-E-O model (1970), the following variables in the student experience were considered: precollege student characteristics (input); engagement in academic experiences, cocurricular activities, campus relationships (environment); and satisfaction, learning (outcome). The sample consisted of seniors participating in the National Survey of Student Engagement (NSSE) and/or a direct measure of general education learning, the ETS Measure of Academic Proficiency and Progress. Results of the analysis of learning indicated no difference in first-generation and continuing-generation students' measures (n = 342). One exception was found …

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Direct Binding Of Parotid Secretory Protein To Phosphatidylinositol Phosphates., Dipti Goyal 1984- Dec 2010

Direct Binding Of Parotid Secretory Protein To Phosphatidylinositol Phosphates., Dipti Goyal 1984-

Electronic Theses and Dissertations

BACKGROUND: Regulated secretion of protein by salivary and other exocrine glands requires correct trafficking of soluble cargo proteins into secretory vesicles. However, the molecular mechanism of sorting in the parotid salivary gland is unknown. Phosphatidylinositol phospholipids, such as PtdIns(3,4)P2, are present in the membrane of secretory granules. We have shown that crude preparations of native Parotid Secretory Protein (PSP) bind PtdIns(3,4)P2; however, it is unclear whether this is due to a direct interaction. HYPOTHESIS: We hypothesize that PSP directly binds PtdIns(3,4)P2 with high affinity. METHODS: Rat PSP cDNA with a C-terminal V5 tag was cloned into a glutathione-Stransferase (GST) expression …

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Scattering Matrix Elements For The Nonadiabatic Collision B (2PJₐ) + H2 (1Σ+G, Ν, Ј) ↔ B (2PJ’ₐ) + H2 (1Σ+G, Ν’, J’), Luke A. Barger Dec 2010

Scattering Matrix Elements For The Nonadiabatic Collision B (2PJₐ) + H2 (1Σ+G, Ν, Ј) ↔ B (2PJ’ₐ) + H2 (1Σ+G, Ν’, J’), Luke A. Barger

Theses and Dissertations

Scattering matrix elements are calculated for the nonadiabatic inelastic collision B (2Pjₐ) + H2 (1Σ+g, ν, ј) ↔ B (2Pj’ₐ) + H2 (1Σ+g, ν’, j’). This calculation utilizes the effective potential energy surfaces for this collision generated by Garvin along with a correction to the asymptotic H2 potential. Wavepackets are propagated on these surfaces using a split-operator propagator. This propagation yields correlation functions between reactant and product Møller states which are used to calculate the scattering …

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Trail Planning & Community Service Curriculum, Lynn Weigand Dec 2010

Trail Planning & Community Service Curriculum, Lynn Weigand

TREC Final Reports

The objective of this project was to develop a new trail planning curriculum and conduct a regional trail research project in the Portland metropolitan area. The curriculum was created for a community service-based, University Capstone course at Portland State University (PSU), with Metro (regional government) as the community course partner. Project goals included: Expanding opportunities for undergraduate students to study trail design and planning for transportation and recreational walking and bicycling; Providing practical application of knowledge to a trail planning project through research and data collection on trail use; Raising awareness of bicycle and pedestrian travel among students in disciplines …

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Oxidation Of Cyclohexane And Ethylbenzene By Hydrogen Peroxide Over Co-Substituted Heteropolytungstate Catalyst, W Kanjina, W Trakarnpruk Dec 2010

Oxidation Of Cyclohexane And Ethylbenzene By Hydrogen Peroxide Over Co-Substituted Heteropolytungstate Catalyst, W Kanjina, W Trakarnpruk

Journal of Metals, Materials and Minerals

The tetrabutylammonium salt of Co-substituted heteropolytungstate, [(n-C4H9)4N]4 HPW11Co(H2O)O39.3H2O was synthesized and characterized. It was shown to be an active catalyst for the oxidation of cyclohexane and ethylbenzene. The oxidation reactions were performed using green oxidant hydrogen peroxide and acetonitrile as solvent. The major products of the oxidation of cyclohexane were cyclohexanone (K) and cyclohexanol (A). High selectivity towards K-A oil was achieved. At longer time cyclohexanol was converted to cyclohexanone. Ethylbenzene was also selectively oxidized to acetophenone. These oxidation reactions appear to be radical processes since they were totally inhibited in the presence of radical scavenger.

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Versatile Route For Preparation Of Polydiacetylene/Zno Nanocomposites And Their Colorimetric Response To Ph And Ethanol, N Rungruangviriya, N Traiphol Dec 2010

Versatile Route For Preparation Of Polydiacetylene/Zno Nanocomposites And Their Colorimetric Response To Ph And Ethanol, N Rungruangviriya, N Traiphol

Journal of Metals, Materials and Minerals

This contribution presents a simple method to prepare polydiacetylene(PDA)/ZnO nanocomposites, which can be utilized as active materials in sensing technology. The ZnO nanoparticles, which constitute of Zn-OH2 + , Zn-OH and Zn-O- groups at their surfaces, function as nano-substrates for self-assembling of diacetylene monomers, 10,12-pentacosadiynoic acid (PCDA), in aqueous medium. Photopolymerization of the assemblies yields poly(PCDA)/ZnO nanocomposites with core-shell structure. Strong interactions between the active groups at ZnO surface and carboxylic head groups of poly(PCDA) promote chain ordering and reduce segmental dynamics of poly(PCDA) in the nanocomposites. The existence of strong interfacial interaction drastically affects the colorimetric response behavior of …

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Study On Flame Retardancy And Anti-Dripping Of Polyester Fabric Treated With Bentonite, Diammonium Hydrogen Phosphate And Aluminium Hydroxide, P Lerdkajornsuk, S Charuchinda Dec 2010

Study On Flame Retardancy And Anti-Dripping Of Polyester Fabric Treated With Bentonite, Diammonium Hydrogen Phosphate And Aluminium Hydroxide, P Lerdkajornsuk, S Charuchinda

Journal of Metals, Materials and Minerals

The purpose of this research was to improve flame retardancy and anti-dripping of polyester fabric by using bentonite, 3% (w/w) diammonium hydrogen phosphate (DA) and 5, 10% (w/w) aluminium hydroxide (Al(OH)3) via pad-dry technique. The burning behavior of the treated polyester fabric was investigated according to ASTM D1230. The results showed that 10wt% of bentonite alone were capable of imparting anti-dripping. Nevertheless, the preparation of the slurry of bentonite (>10% (w/w)) caused high viscosity leading to difficulties for the preparation and finishing process. Thus, the addition of 4% (w/w) of sodium chloride (NaCl) to the suspension of bentonite (up …

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The Co-Production Of Social Contagion: A Comparative Analysis Of Two Social Networking Sites, Michael Fisher Dec 2010

The Co-Production Of Social Contagion: A Comparative Analysis Of Two Social Networking Sites, Michael Fisher

Student Scholarship

Theories of technology product adoption and diffusion fail to adequately explain social contagion or viral growth. Additionally\, the role of product design in users propensity to use and recommend products is both understudied and poorly understood. To address a vexing gap in knowledge about what explains viral growth\, we conducted ethnographic interviews with technology executives and users of two social networking sites that have experienced dramatically different growth patterns. Our findings reveal that product co-production and user self identity- not product attributes fuel viral growth. Social networking products co-produced by users and providers\, with meaning socially constructed by customers\, permit …

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Temporal Tribes: The Origin And Resolution Of Tenure Based Affective Conflict In Venture Backed Top Management Teams, Mary Abbott Dec 2010

Temporal Tribes: The Origin And Resolution Of Tenure Based Affective Conflict In Venture Backed Top Management Teams, Mary Abbott

Student Scholarship

Venture backed firms with both exceptionally high and relatively low growth experience a comparatively fast turnover of executives, often resulting in multiple cohorts within the top management team (TMT). These tenure cohorts often act like warring tribes, generating value destroying affective conflict. While several studies have validated the relationship between tenure diversity and affective conflict, none explain its source. To address this gap in knowledge, we conducted in-depth ethnographic interviews with 34 executives from six U.S. venture backed private companies. Our results move beyond those of previous studies on tenure based affective team conflict by revealing its source to be …

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The Socio-Cognitive Dynamics Of Entrepreneurial Ideation, Robert M. Gemmell Dec 2010

The Socio-Cognitive Dynamics Of Entrepreneurial Ideation, Robert M. Gemmell

Student Scholarship

Entrepreneurs need creative ideas to develop innovative new products. We interviewed 32 technology entrepreneurs to generate a grounded theory about how technology entrepreneurs use social behaviors, techniques and cognitive processes to attain, develop, refine, validate and filter (for usefulness) creative ideas for successful new products, processes or services. The results reveal a complex, cyclical and recursive multi-level social process with emphasis on active and social experimentation. Greatest ideational productivity occurs when strong social ties interactively solve problems in an environment of trust -- in particular, when 'Trusted Partners' exchange and refine ideas through a form of shared cognition. Findings will …

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Toward An Understanding Of Entrepreneurship Environment: The Case Of Puerto Rico, Moraima De Hoyos-Ruperto Dec 2010

Toward An Understanding Of Entrepreneurship Environment: The Case Of Puerto Rico, Moraima De Hoyos-Ruperto

Student Scholarship

This study aims to address the unexplained stagnant entrepreneurial environment in Puerto Rico despite average or above average entrepreneurial potential, capabilities, and intentions compared to other high-income countries. Analysis of interviews with public, private and civic sector leaders and both successful and less successful entrepreneurs suggest a pervasive lack of support for entrepreneurs from formal organizations charged with entrepreneurship development and a failure of entrepreneurs themselves to develop networks to support venture startup and sustainment.

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Montana Kaimin, December 1, 2010, Students Of The University Of Montana, Missoula Dec 2010

Montana Kaimin, December 1, 2010, Students Of The University Of Montana, Missoula

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

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Entrepreneurship In Multinational Corporations And Capability Development Of Domestic Firms: An Exploratory Study In The Us-Mexico Border Region, Jung-Hoon Lim Dec 2010

Entrepreneurship In Multinational Corporations And Capability Development Of Domestic Firms: An Exploratory Study In The Us-Mexico Border Region, Jung-Hoon Lim

Theses and Dissertations - UTB/UTPA

This dissertation explores the relationship between entrepreneurship and capability development in emerging markets. This study focuses on entrepreneurial activities in multinational corporations (MNCs) in emerging markets. Maquila plants and local Mexican suppliers located in (or near) Reynosa, Tamaulipas are investigated. The results from 34 interviews of a sample local Mexican supplier, maquila plant, local government, local university and Reynosa Asociación de Maquiladoras y Manufactureras, A.C. (RAMMAC) suggest that the entrepreneurship in the maquila plants occurs through the continuous improvement in the manufacturing process. The purpose is primarily efficiency and quality. The border economy that is primarily driven by the economic …

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46 | The Ramat Bet Shemesh Regional Project: The Gazetteer, Yehuda Dagan Dec 2010

46 | The Ramat Bet Shemesh Regional Project: The Gazetteer, Yehuda Dagan

IAA Reports—Monograph Series of the Israel Antiquities Authority

The Ramat Bet Shemesh Project was initiated by the IAA following plans to transform a large undeveloped area of the Judean Shephelah into a densely-built urban center. The aim of the project was to conduct a high-resolution regional study in the designated area, including archaeological and prehistoric, as well as ecological and environmental surveys, in order to record the ancient remains and the natural environment that were to be completely destroyed. This first volume presents all the sites surveyed during the project, as well as the results of 100 small-scale excavations and some preliminary interpretations by the excavators.

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Elements Food Group Marketing Plan, Lacey Murillo Dec 2010

Elements Food Group Marketing Plan, Lacey Murillo

UNLV Theses, Dissertations, Professional Papers, and Capstones

This paper provides Elements Food Group with a detailed strategic marketing plan that will assist in increasing revenues and solidify the “Elements” brand within the greater Los Angeles area. Through extensive research into the local history of the Pasadena Playhouse District, the financial history of the Pasadena Playhouse building, and the past failures of the restaurant space attached to the playhouse a marketing plan was developed that provides a thorough analysis and understanding of how Elements Kitchen can increase revenues. Building a strong online marketing brand through multiple outlets paired with a guerilla- style marketing to the surrounding community will …

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Safety Committees: Their Role In Preventing Employee Accidents In Hotels And Resorts, Sheila Tabeling Dec 2010

Safety Committees: Their Role In Preventing Employee Accidents In Hotels And Resorts, Sheila Tabeling

UNLV Theses, Dissertations, Professional Papers, and Capstones

Employee accidents have a powerful and negative affect on the bottom line and profitability of a hotel or resort. In this professional paper, a literature review will be used to analyze the frequency and severity of injuries in hotels and resorts. Then, a guideline for a hotel safety committee will be established in an effort to help hotels and resorts decrease the amount, severity, and ultimately the cost associated with employee accidents. This professional paper aims to establish and implement guidelines for hotel and/or resort safety committees in order to increase the percentage of safe work practices on and off …

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