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The Influence Of First Language Communication Patterns In The Development Of The Written Communication Patterns In The Second Language, Claudia Gutierrez Dec 2005

The Influence Of First Language Communication Patterns In The Development Of The Written Communication Patterns In The Second Language, Claudia Gutierrez

McNair Scholars Research Journal

No abstract provided.

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Fabrication And Mechanical Characterization Of A Two-Ply Cross Fiber Stent And Fibers Comprising Blends Of Poly(L-Lactic Acid), Sushma Gampa Dec 2005

Fabrication And Mechanical Characterization Of A Two-Ply Cross Fiber Stent And Fibers Comprising Blends Of Poly(L-Lactic Acid), Sushma Gampa

Bioengineering Theses - Archive

Recent studies indicate that stabilization of vulnerable atherosclerotic plaques is critical for minimizing acute coronary syndromes. In this regard a new biodegradable stent design, the Two-ply cross fiber stent, has been developed to reduce stent-imposed stresses on such plaque and to provide increased drug reservoir capability. A comparative study of the mechanical properties of Two-ply and Single-ply stent designs was performed. Fibers comprising PLLA blends were developed and their thermal and mechanical properties were determined. Lateral spreading of helical fibers upon deployment of the Two ply design was observed that, in theory, may reduce stresses on the plaque surface. The …

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Parametric And Non-Parametric Analysis Of Carotid Sinus Baroreflex System Using Electrically Induced Muscle Contraction, Sheetal D. Deshmukh Dec 2005

Parametric And Non-Parametric Analysis Of Carotid Sinus Baroreflex System Using Electrically Induced Muscle Contraction, Sheetal D. Deshmukh

Bioengineering Theses - Archive

The arterial pressure is an important physiological parameter which if not maintained at desired level may lead to fatal disorders or in worst situations even death. The physiological feedback control mechanism in order to regulate the arterial pressure is performed by the baroreceptors. In this study the dynamic characteristics of carotid sinus baroreceptor are identified to obtain the open-loop characteristics of the carotid sinus pressure (CSP, mmHg) to the renal sympathetic nerve activity (RSNA, Arbitrary unit), RSNA to systemic arterial pressure (SAP, mmHg), CSP to SAP and CSP to heart rate (HR, bpm).The purpose of this study was to know …

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Ut Arlington Library Notes, V.11, No.2, Fall 2005, University Of Texas At Arlington Library Dec 2005

Ut Arlington Library Notes, V.11, No.2, Fall 2005, University Of Texas At Arlington Library

UT Arlington Library Notes

Former publication of the UT Library intended to foster community support and appreciation for Library Programs and services and to spotlight grants and contributions. It was published during the 1990s and 2000s.

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Efficient Xquery Processing Of Streamed Xml Fragments, Seo Young Ahn Nov 2005

Efficient Xquery Processing Of Streamed Xml Fragments, Seo Young Ahn

Computer Science and Engineering Theses - Archive

XStreamCast is a push-based streamed XML query processing system that supports multiple servers and clients. The servers broadcast streamed XML data while the clients register to these servers for a specific service and process streamed XML fragments. This thesis presents methods for efficient XQuery processing of streamed XML fragments for the client. The XQuery parser parses the XQuery given by the user first. The client processes the fragments and stores only the needed data for the query. The query is then applied to stored XML fragments. This system can be valuable for managing the memory of the client because it …

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Investigation Of Pool Boiling Heat Transfer With Nanofluids, Gilberto Moreno Nov 2005

Investigation Of Pool Boiling Heat Transfer With Nanofluids, Gilberto Moreno

Mechanical and Aerospace Engineering Theses - Archive

This investigation conducts pool boiling experiments under saturated conditions (Tsat=60°C) using nanofluids as coolants. Four different nanofluids were tested including zinc oxide (ZnO)-water, aluminum oxide (Al2O3)-water, aluminum oxide (Al2O3)-water+ethylene glycol (ethylene glycol solution) and gold (Au)-water. At saturation (Tsat=60 °C), the pool boiling performance of Al2O3-water and ZnO-water nanofluids were similar. The maximum CHF enhancement as compared to predicted Zuber's [1] CHF evaluated at an equivalent saturation temperature is about 180% for Al2O3-water nanofluids and about 240% for ZnO-water nanofluids. In both cases, no degradation in the boiling heat transfer rate was observed for lower nanoparticle concentrations. The dispersion of …

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The Thermal Characteristics Of Liquid-Heat-Spreader, Sang Muk Kwark Nov 2005

The Thermal Characteristics Of Liquid-Heat-Spreader, Sang Muk Kwark

Mechanical and Aerospace Engineering Theses - Archive

The present study is an experimental research of a liquid-heat-spreader (LHS) with saturated water at ~2.29 psia. A LHS, indirect liquid cooling module, was successfully fabricated using thin copper blocks and copper tubes using solder. Three types of LHS, Flat-type, L-type, and T-type, were developed for different orientations and were compared with solid metal blocks such as aluminum and copper. The Flat-type LHS, 100 (W) × 254 (L) × 3 (T) mm3, was designed for vertical orientation. It showed a remarkable thermal performance by dissipating heat flux of 119 W/cm2 with below 100? chip temperature at the typical condition. The …

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A Cmos Ultra-Wideband Differential Low Noise Amplifier, Timothy Bryan Merkin Nov 2005

A Cmos Ultra-Wideband Differential Low Noise Amplifier, Timothy Bryan Merkin

Electrical Engineering Theses - Archive

In this thesis, a CMOS Ultra-wideband (UWB) Low noise Amplifier (LNA) was designed and simulated. In the design, specific architecture decisions were made in consideration of ultimately including this LNA in a system-on-chip implementation of an Ultra-wideband communication system. The basic architecture of the LNA designed herein exhibits a differential amplifier core with active input and output impedance matching, minimizing the number of expensive space consuming passive inductors necessary for passive impedance matching networks. The LNA maintains a gain of 16.4dB with a ±0.25dB ripple over the band of 3.1-6.2GHz. Despite the use of an active input matching stage, the …

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Cmos 5th Derivative Gaussian Impulse Generator For Uwb Application, Shin-Chih Chang Nov 2005

Cmos 5th Derivative Gaussian Impulse Generator For Uwb Application, Shin-Chih Chang

Electrical Engineering Theses - Archive

A complete impulse generating system was designed and simulated which generates the fifth order derivative of the Gaussian pulse intended for use in an impulse-type ultra-wideband wireless communication system. By using a continuous-time FIR impulse shaping filter, the system transforms a normal Gaussian pulse signal obtained from an existing CMOS Gaussian pulse generator into its fifth derivative. The transformation filtering was accomplished without lengthening the time duration of the original pulse or causing any noticeable ringing effects. The final output waveform closely resembles the fifth derivative of the Gaussian pulse, and also satisfies the spectral mask emission requirements specified by …

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An Overview Of Central Dizin Phonology And Morphology, Marvin Dean Beachy Nov 2005

An Overview Of Central Dizin Phonology And Morphology, Marvin Dean Beachy

Linguistics & TESOL Theses - Archive

Dizin (Dizi) is an Omotic language spoken in Southwest Ethiopia with three main dialects. This thesis focuses on Central Dizin phonology and morphology, but includes some data from Eastern Dizin and Western Dizin. Prolonged language contact with Amharic has affected the sound system of Dizin and numerous Amharic words have been borrowed. Features of the Dizin sound system include glottalized consonants, syllabic nasals, lengthened vowels, three phonemic tone levels and contour tones. Western Dizin has phonemic retroflex consonants. The glottal stop is analyzed as phonemic word initially before nasals, but not phonemic elsewhere. Dizin is polysynthetic and more agglutinative than …

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Sunday In The Park With George: A Musical Curation By Stephen Sondheim, Amy Riordan Nov 2005

Sunday In The Park With George: A Musical Curation By Stephen Sondheim, Amy Riordan

English Theses - Archive

This analysis serves to reveal the strong interconnectedness between museums and theatre (mentioned only briefly by other scholars) as uniquely demonstrated by Stephen Sondheim's musical, Sunday in the Park with George. Because Sondheim chose George Seurat's museum-housed painting, Sunday on the Island La Grande Jatte, as the foundation for his show, museum practices including labels, titles, ways of seeing, and curatorial authority--to which Seurat's painting has already been subjected--can also be located in Stephen Sondheim's musical. However, in the musical the artist is returned authority over his painting, above museum practice and curator bias. By granting the artist such dominion …

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The Impact Of Property Flipping On Single Family Detached Home Prices, Wesley H. English Nov 2005

The Impact Of Property Flipping On Single Family Detached Home Prices, Wesley H. English

Business Administration Theses - Archive

In 2003 HUD ruled that flipped properties, which are defined as recently acquired properties that have been resold, often within days, and for a substantial profit, are ineligible for FHA insured mortgage financing. This research uses the HUD ruling as the basis for this study. Their ruling was based on the perception that property flipping had a negative effect on home prices among other things. The study uses hedonic modeling to empirically determine if houses that have previously flipped have any influence on value when compared to the non-flipped properties in the same market. Through a regression analysis, it is …

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Supramolecular Chemistry Of Nitrogen Dioxide, Yanlong Kang Nov 2005

Supramolecular Chemistry Of Nitrogen Dioxide, Yanlong Kang

Chemistry & Biochemistry Dissertations - Archive

Supramolecular chemistry has been defined as "chemistry beyond molecules", and involves investigating molecular systems held together reversibly by inter-molecular forces, not by covalent bonds. This dissertation discusses a supramolecular approach towards sensing, entrapment and utilization of NO2/N2O4 gases. Chapter 1 briefly discusses supramolecular chemistry and supramolecular chemistry of gases. In chapter 2, the interaction of NOx with metalloporphyrins is described. Specifically, ruthenium nitrosyl derivatives hold a special place in mimicking bio-relevant NO-metal interactions. A previously unnoticed reaction between NO2/N2O4 and a Ru(II) porphyrin is described. It causes disproportionation of N2O4 and leads to a stable nitrosyl nitrato complex. Our findings …

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A Simulation Tool Suite For The Modeling And Optimization Of Multiple Quantum Well Structures, Jeffery Wayne Allen Nov 2005

A Simulation Tool Suite For The Modeling And Optimization Of Multiple Quantum Well Structures, Jeffery Wayne Allen

Electrical Engineering Theses - Archive

This thesis aims to develop a suite of computational tools for design, analysis, and simulation of semiconductor multiple quantum well structures with a user-friendly GUI. The research project focuses on the electrical and optical aspects of user defined quantum well structures, and allows the user to vary design parameters to optimize the structure for different device applications and functionality. Specifically the thesis delves into the design and analysis of different quantum well structures as they relate to band gap engineering. Key features of this computational suite include relationship to electrical field, doping profiles and optical transitions. The quantum well structures …

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Optimization Of H.264 Baseline Decoder On Arm9tdmi Processor, Sandya B. Sheshadri Nov 2005

Optimization Of H.264 Baseline Decoder On Arm9tdmi Processor, Sandya B. Sheshadri

Electrical Engineering Theses - Archive

With the newly introduced features and advancements to the pre-existing features, the emerging H.264 video coding standard achieves significant improvements in coding performance over all existing standards, in a wide variety of applications. The coding-efficiency advantages of H.264, however, come at the expense of higher computational complexity. H.264 decoders can exhibit more than double the complexity of H.263 decoders. Furthermore, previous studies have shown that fractional-pixel motion-compensation interpolation and the loop filtering consume a significant amount of computational power in emerging H.264 decoders. Since these operations are part of the baseline profile of H.264, there is a need to evaluate …

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A Novel Game Theoretic Framework For Security In Wireless Sensor Networks, Afrand Agah Nov 2005

A Novel Game Theoretic Framework For Security In Wireless Sensor Networks, Afrand Agah

Computer Science and Engineering Dissertations - Archive

Due to severe resource limitations and often lack of centralized infrastructure, providing security in wireless sensor networks is a great challenge. Misbehavior due to malicious or faulty nodes can significantly degrade the performance of such networks. Therefore, countermeasures against denial of service (DoS) attacks and node misbehavior are essential requirements. We argue that the conventional view of security based on cryptography techniques is not sufficient for securing wireless sensor networks. In this dissertation, we investigate a novel framework by proposing three approaches for security enforcement in such networks that range from prevention of DoS attacks to secure routing. Prevention of …

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An Analysis Of Classroom Environment And Child Outcomes Across Three Models Of Early Childhood Intervention, Marion Ruth Shiflett Nov 2005

An Analysis Of Classroom Environment And Child Outcomes Across Three Models Of Early Childhood Intervention, Marion Ruth Shiflett

Social Work Dissertations - Archive

This research study presents a comparative analysis to examine classroom environments and child developmental outcomes across three early intervention models that serve children living in low-income families. Two long standing early intervention programs, Head Start and state-mandated Prekindergarten, are used as comparison groups to compare classroom environment and child outcomes with a collaboration known as Ready Start, a combination program serving children with a half day of Prekindergarten and a half day of Head Start. The Ready Start program is designed to combine the strengths of both programs to best serve the needs of children from low-income families. The study …

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Teilhard De Chardin's View Of Diminishment And The Late Stories Of Flannery O'Connor, Steven Watkins Nov 2005

Teilhard De Chardin's View Of Diminishment And The Late Stories Of Flannery O'Connor, Steven Watkins

English Dissertations - Archive

ABSTRACT Scholars have used different approaches to study and interpret the work of Flannery O'Connor; those approaches have ranged from Feminism to New Criticism to religious (Christian and non-Christian) to psychological. These attempts to analyze and interpret her work have produced a diverse approach to understanding this intriguing author, who lived only to the age of thirty-nine because of lupus erthymatosus. The approach of this dissertation is that the presence of this disease in her life caused her to look for ways to resolve and adapt to the limitations of the disease. One prominent source for reflecting and resolving the …

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Geometrical Problems In Engineering Mechanics, Feraydune Kashefi, Mostafa Ghandehari Nov 2005

Geometrical Problems In Engineering Mechanics, Feraydune Kashefi, Mostafa Ghandehari

Mathematics Technical Papers - Archive

Four problems in two dimensional geometry are presented, which are applicable to education of the basic courses, statics. These problems represent geometrical concepts that are understandable by engineering students. For example, consider a triangle made from a uniform rod. If we draw the inscribed circle of this triangle, and concentrate the weight of each side on the point at which in circle touches the side, center of the gravity of the three concentrated masses is located at the center.

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Region Of Interest (Roi) Based Rate Control For H.263 Compatible Video Conferecing, Lin Tong Nov 2005

Region Of Interest (Roi) Based Rate Control For H.263 Compatible Video Conferecing, Lin Tong

Electrical Engineering Dissertations - Archive

This dissertation presents a region of interest (ROI) based H.263 [10] [13] compatible video codec, which integrates the idea of object-based coding from MPEG-4 Visual [9] [15] into the traditional block-based H.263 codec. A face detection and tracking scheme with very low complexity is proposed to segment human face region from video conferencing sequences in real-time. For intra frames, the proposed detection method is a hybrid skin color and mosaic-rule based face detection and for inter frames the face tracking method uses motion vectors only. With the segmentation information, the ROI based codec and its associated rate control schemes are …

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Querying Microarray Databases, Zoe Alexandra Raja Nov 2005

Querying Microarray Databases, Zoe Alexandra Raja

Computer Science and Engineering Theses - Archive

Microarray technology has rapidly taken a key position among bioinformatics research tools. After the completion of the Human Genome Project, microarray databases have become particularly important to the management and analysis of genomic data. These databases are ideal tools for many research areas involving gene expression patterns under different experimental conditions. This work attempts to assess the querying capabilities of current public microarray database implementations by evaluating their data management, query interfaces, and results presentation. We are not aware of any comparative study available to date that evaluates this important class of biological databases. We examine and evaluate how several …

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Repclass: Cluster And Grid Enabled Automatic Classification Of Transposable Elements Identified De Novo In Genome Sequences, Nirmal Ranganathan Nov 2005

Repclass: Cluster And Grid Enabled Automatic Classification Of Transposable Elements Identified De Novo In Genome Sequences, Nirmal Ranganathan

Computer Science and Engineering Theses - Archive

In the last few years many computer and laboratory improvements in the production and analysis of DNA sequences have made possible the complete sequencing of whole genomes. This provides us with a wealth of raw genomes that needs to be processed and annotated. 5% to 80% of eukaryotic genomes contain repetitive DNA consisting of transposable elements and tandem repeats which needs to be identified, classified and annotated in order to sequence and annotate the entire genome accurately. Existing tools allow us to identify and annotate transposable elements (TE) but no tool exists for their classification. This thesis work introduces REPCLASS …

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Application Of Graph-Based Data Mining To Biological Networks, Chang Hun You Nov 2005

Application Of Graph-Based Data Mining To Biological Networks, Chang Hun You

Computer Science and Engineering Theses - Archive

A huge amount of biological data has been generated by long-term research. It is time to start to focus on a system-level understanding of bio-systems. Biological networks are networks of biochemical reactions, containing various objects and their relationships. Understanding of biological networks is a starting point of systems biology. Multi-relational data mining finds the relational patterns in both the entity attributes and relations in the data. A widely used representation for relational data is a graph consisting of vertices and edges between these vertices. Graph-based data mining, as one approach of multi-relational data mining, finds relational patterns in a graph …

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Error-Resilient Image And Video Coding Over Lossy Networks, Yilong Liu Nov 2005

Error-Resilient Image And Video Coding Over Lossy Networks, Yilong Liu

Electrical Engineering Dissertations - Archive

The rapid growth of the Internet and increasing bandwidth in the past decade has heightened the interest in robust transmission of image and video signals over error-prone links. Recent literatures highlight the multiple description (MD) coding as a promising approach to solve this problem. MD coding is a source coding technique that provides a graceful quality degradation in the presence of packet losses during transmission. Topics of interest to construct MD coders with high coding efficiency and robustness are studied in this thesis. First, to minimize the overall distortion of reconstructed image, an edge-adaptive estimation algorithm is employed, which can …

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Enhancements To The Sam-Grid Infrastructure, Bimal Balan Nov 2005

Enhancements To The Sam-Grid Infrastructure, Bimal Balan

Computer Science and Engineering Theses - Archive

SAM-Grid is a grid computing infrastructure for high energy physics (HEP) experiments in Fermilab. It is composed of data handling, job management and information management components. There are several challenges when the number of sites participating in the experiment increases. This thesis presents the enhancements made on the SAM-Grid infrastructure. This includes scalability and performance related enhancements. The enhancements mainly affect the batch adapter, monitoring and security layers. As a scalability aspect, Monitoring and Information services required changes to make it easier for monitoring large number of jobs. SAM-Grid is integrated with Sun Grid Engine (SGE) batch system. The batch …

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Adaptive Agent Communities For Providing Services In Dynamic Networks, Nayantara Mallesh Nov 2005

Adaptive Agent Communities For Providing Services In Dynamic Networks, Nayantara Mallesh

Computer Science and Engineering Theses - Archive

New network applications are being created everyday to accommodate diverse user needs. Delivering services to the user in a timely manner taking into account network conditions, resources allocated and network load is a challenge. Multiprotocol Label Switching attempts to overcome best-effort service by providing a method for routing traffic around network congestion, resource reservation and quality of service (QoS) capabilities. IntServ and DiffServ are two other QoS models in use today. IntServ provides per-flow guarantee of quality while DiffServ is based on aggregate service classes. Adaptive Network Service (ANS) is a community of adaptive, collaborating agents residing in the network …

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Multi-Dimensional Indexing For Xml Data, Do Youn Kim Nov 2005

Multi-Dimensional Indexing For Xml Data, Do Youn Kim

Computer Science and Engineering Theses - Archive

The Extensible Markup Language (XML) is becoming a dominant standard for exchanging and retrieving data over the internet. As XML in data exchanging grows, various XML indexing techniques have been proposed for fast and efficient query processing. A survey of theses techniques [9] categorized them into sequence-based indexes, structural indexes, dimension-based indexes and keyword-based indexes based on their properties. In this thesis, we focus on the multi-dimensional XML indexing; more precisely, it can be categorized as a 2-dimension based indexing, which is used in this paper. We studied the properties of multi-dimensional XML indexing and created an implementation to evaluate …

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Adaptive, Multimodal, Application Independent User Interfaces For People With Disabilites Using Computers, Padmapriya Sambath Nov 2005

Adaptive, Multimodal, Application Independent User Interfaces For People With Disabilites Using Computers, Padmapriya Sambath

Computer Science and Engineering Theses - Archive

The goal of this thesis is to create more adaptive and flexible user interfaces for people with disabilities and presenting information to everyone and on every device at any time. Delivering information at any time leads to situations such as a person walking with a mobile device having a small screen wanting to make a flight reservation. The intention of presenting information to everybody immediately raises the question of how much of the available information reach people with disabilities. We have suggested a content based user interface language that may be used by external services to interact with the user. …

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Eigenspace Model Based Error Concealment And Low Bit Rate Coding Of Face Sequences, Xuejun Hu Nov 2005

Eigenspace Model Based Error Concealment And Low Bit Rate Coding Of Face Sequences, Xuejun Hu

Electrical Engineering Dissertations - Archive

The emerging multimedia applications address the increasing demand for novel video coding systems to provide higher compression ratio while maintaining the high quality of the reconstruction. This research makes an effort under such context to investigate the application of principal component analysis (PCA) in the video coding area, especially for error concealment and very low bit rate face coding. PCA is a well known optimal linear scheme for dimension reduction in data analysis. The central idea of PCA is to reduce the dimensionality of a data set while retaining as much as possible the variation in the data set. Since …

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Modeling And Feedback Control Of Mems Devices, Bruno Borovic Nov 2005

Modeling And Feedback Control Of Mems Devices, Bruno Borovic

Electrical Engineering Dissertations - Archive

As MEMS actuators reach maturity and emerge from the research lab into commercial applications, their increased reliability, speed, and performance accuracy is needed. MEMS are typically driven directly in an open-loop fashion by applying simple actuating signals. The requirements for better dynamical behavior, however, have resulted in the gradual introduction of improved actuation approaches, such as pre-shaped open-loop driving and closed-loop control. Unlike macro mechanical systems where the implementation of the feedback is relatively simple, it is quite problematic in the MEMS case. The presence of fast system dynamics, and physical area efficiency requirements have introduced additional challenges for feedback …

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