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2011

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Articles 1981 - 2010 of 29933

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Capacitance Calculation For A Shared-Antipad Via Structure Using An Integral Equation Method Based On Partial Capacitance, Hanfeng Wang, Albert E. Ruehli, Jun Fan Dec 2011

Capacitance Calculation For A Shared-Antipad Via Structure Using An Integral Equation Method Based On Partial Capacitance, Hanfeng Wang, Albert E. Ruehli, Jun Fan

Electrical and Computer Engineering Faculty Research & Creative Works

An integral equation method used for capacitance extraction for axially symmetric geometries is extended in this paper to calculate the via-plane capacitances in shared-antipad via structures, by changing the circular ring cells to arc ones. the proposed method is validated with a commercial finite element method-based tool for a typical structure used in modern high-speed printed circuit design. © 2011 IEEE.

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On The Linear Precoder Design For Mimo Channels With Finite-Alphabet Inputs And Statistical Csi, Weiliang Zeng, Chengshan Xiao, Mingxi Wang, Jianhua Lu Dec 2011

On The Linear Precoder Design For Mimo Channels With Finite-Alphabet Inputs And Statistical Csi, Weiliang Zeng, Chengshan Xiao, Mingxi Wang, Jianhua Lu

Electrical and Computer Engineering Faculty Research & Creative Works

This paper investigates the linear precoder design that maximizes the average mutual information of multiple-input multiple-output channels with finite-alphabet inputs and statistical channel state information known at the transmitter. This linear precoder design is an important open problem and is extremely difficult to solve: First, average mutual information lacks closed-form expression and involves complicated computations; Second, the optimization problem over precoder is nonconcave. This study explores the solution to this problem and provides the following contributions: 1) a closed-form lower bound of average mutual information is derived. It achieves asymptotic optimality at low and high signal-to-noise ratio regions and, with …

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Optofluidic Glucose Sensor Utilizing An Epoxy-Based, Transparent Dry Film Resist, Zhan Gao, Sijia Gong, Chang Soo Kim, David B. Henthorn Dec 2011

Optofluidic Glucose Sensor Utilizing An Epoxy-Based, Transparent Dry Film Resist, Zhan Gao, Sijia Gong, Chang Soo Kim, David B. Henthorn

Electrical and Computer Engineering Faculty Research & Creative Works

An enzymatic, fluorescent glucose sensor was constructed with a novel epoxy-Based, optically transparent dry film resist (PerMX 3000 series, DuPont). This material was utilized as the main active material for fluidic structure and optical interrogation. This sensor was based on the enzymatic reaction of glucose oxidase (GOD) and utilized a ruthenium complex fluorophore as the reporting agent. Both the oxygen-sensitive ruthenium complex and GOD were incorporated into poly (ethylene glycol) (PEG)-Based hydrogel materials, which were lithographically patterned and embedded inside the PerMX fluidic channel after wafer-bonding process. the optofluidic sensing platform with this embedded sensing elements exhibited a wide dynamic …

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Eigenvalue Distributions Of Mimo Rayleigh-Product Channels With Arbitrary-Power Co-Channel Interference And Noise, Yongpeng Wu, Shi Jin, Xiqi Gao, Chengshan Xiao, Matthew R. Mckay Dec 2011

Eigenvalue Distributions Of Mimo Rayleigh-Product Channels With Arbitrary-Power Co-Channel Interference And Noise, Yongpeng Wu, Shi Jin, Xiqi Gao, Chengshan Xiao, Matthew R. Mckay

Electrical and Computer Engineering Faculty Research & Creative Works

This paper studies the eigenvalue distributions of multiple-input multiple-output (MIMO) Rayleigh-product channels in the presence of both co-channel interference and thermal noise. We first present exact expressions for the marginal ordered eigenvalue distributions of the channel Gram matrix when multichannel beamforming is employed, from which we obtain exact results of the outage probability on each eigenmode. Our results apply to a wide class of multichannel systems which transmit on the eigenmodes of the MIMO channel, allowing for transmission on any numbers of eigen subchannels, with any numbers of antennas, any numbers of scatterers in the environment, and any numbers of …

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Validation Of The Triply Selective Fading Channel Model Through A Mimo Test Bed And Experimental Results, Saurav Subedi, Huang Lou, Fei Ren, Mingxi Wang, Y. Rosa Zheng Dec 2011

Validation Of The Triply Selective Fading Channel Model Through A Mimo Test Bed And Experimental Results, Saurav Subedi, Huang Lou, Fei Ren, Mingxi Wang, Y. Rosa Zheng

Electrical and Computer Engineering Faculty Research & Creative Works

Multiple-input multiple-output (MIMO) channel is often triply selective, meaning that it has spatial, temporal and inter-tap correlation. the temporal correlation is well characterized by its Doppler spectrum, but spatial and inter-tap correlation and their impact on MIMO channels are less studied in the literature. a MIMO testbed has been established to measure the impulse response of MIMO channels and an estimation method is developed to quantitatively measure the correlation matrices from experimental data. © 2011 IEEE.

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On The Preconditioner Of Conjugate Gradient Method A Power Grid Simulation Perspective, Chung Han Chou, Nien Yu Tsai, Hao Yu, Che Rung Lee, Yiyu Shi, Shih Chieh Chang Dec 2011

On The Preconditioner Of Conjugate Gradient Method A Power Grid Simulation Perspective, Chung Han Chou, Nien Yu Tsai, Hao Yu, Che Rung Lee, Yiyu Shi, Shih Chieh Chang

Electrical and Computer Engineering Faculty Research & Creative Works

Preconditioned Conjugate Gradient (PCG) method has been demonstrated to be effective in solving large-scale linear systems for sparse and symmetric positive definite matrices. One critical problem in PCG is to design a good preconditioner, which can significantly reduce the runtime while keeping memory usage efficient. Universal preconditioners are simple and easy to construct, but their effectiveness is highly problem dependent. on the other hand, domain-specific preconditioners that explore the underlying physical meaning of the matrices usually work better but are difficult to design. in this paper, we study the problem in the context of power grid simulation, and develop a …

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Characterization Of Palmitic Acid Induced Lipotoxicity In Schwann Cells, Amelia Padilla Dec 2011

Characterization Of Palmitic Acid Induced Lipotoxicity In Schwann Cells, Amelia Padilla

Loma Linda University Electronic Theses, Dissertations & Projects

Lipotoxicity is a response to lipid overload that has been associated with cellular dysfunction leading to cellular death. The mechanism of lipotoxicity and its impact on the nervous system is critical as it can lead to debilitating neurological conditions. This study examines key cellular events induced by palmitic acid lipotoxicity (PA-LTx) in Schwann cells cultured in euglycemic and hyperglycemic conditions. The data show that immortalized Schwann cell (iSC), as well as primary Schwann cell (pSC) cultures exposed to elevated levels of PA induced an apoptotic cell death that is dose and time-dependent. The earliest indication of cellular dysfunction was a …

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Simulations Of Pulse Signals With X-Parameters, Nick K.H. Huang, Lijun Jiang Dec 2011

Simulations Of Pulse Signals With X-Parameters, Nick K.H. Huang, Lijun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

Nonlinearity is becoming increasingly important to IC technologies. From the PHD formalism, X-parameter models provide an accurate frequency-domain method under large-signal operating points to characterize their nonlinear behaviors. In this work, X-parameter models are investigated to handle time-domain pulse signals which is critical to IC signal integrity but was not studied before. Two representative circuits, an analog LNA and a digital CMOS buffer, were employed to characterize the X-parameter performance. The results obtained in this paper provide the first hand data for pulse signal responses of X-parameters in signal integrity modelings. © 2011 IEEE.

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Mixed Integral-Differential Skin-Effect Models For Peec Electromagnetic Solver, Giulio Antonini, Albert E. Ruehli, Lijun Jiang Dec 2011

Mixed Integral-Differential Skin-Effect Models For Peec Electromagnetic Solver, Giulio Antonini, Albert E. Ruehli, Lijun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

Efficient modeling of the broadband skin-effect for conducting 3D shapes is a challenging issue for the solution of large electromagnetic problems. The inclusion of such models in an EM solver can be very costly in compute time and memory requirements. Several properties of a model are desirable for the solution of practical problems such as the broadband frequency domain or the time domain applicability. In this paper, we present a model which meets some of these challenges and which is suitable for the PEEC solution method. © 2011 IEEE.

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Compact Metallic Rfid Tag Antennas With A Loop-Fed Method, Peng H. Yang, Yan Li, Lijun Jiang, W. C. Chew, Terry Tao Ye Dec 2011

Compact Metallic Rfid Tag Antennas With A Loop-Fed Method, Peng H. Yang, Yan Li, Lijun Jiang, W. C. Chew, Terry Tao Ye

Electrical and Computer Engineering Faculty Research & Creative Works

Several compact, low profile and metal-attachable RFID tag antennas with a loop-fed method are proposed for UHF RFID systems. The structure of the proposed antennas comprise of two parts: (1) The radiator part consists of two shorted patches, which can be treated as two quarter-wave patch antennas or a cavity. (2) A small loop printed on the paper serves as the feeding structure. The small loop provides the needed inductance for the tag and is connected to the RFID chip. The input impedance of the antenna can be easily adjusted by changing loop dimensions. The antenna has the compact size …

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Multiple Sclerosis Is Not A Disease Of The Immune System, Angelique Corthals Dec 2011

Multiple Sclerosis Is Not A Disease Of The Immune System, Angelique Corthals

Publications and Research

Multiple sclerosis is a complex neurodegenerative disease, thought to arise through autoimmunity against antigens of the central nervous system. The autoimmunity hypothesis fails to explain why genetic and environmental risk factors linked to the disease in one population tend to be unimportant in other populations. Despite great advances in documenting the cell and molecular mechanisms underlying MS pathophysiology, the autoimmunity framework has also been unable to develop a comprehensive explanation of the etiology of the disease. I propose a new framework for understanding MS as a dysfunction of the metabolism of lipids. Specifically, the homeostasis of lipid metabolism collapses during …

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Islands And Swamps: A Comparison Of The Japanese American Internment Experience In Hawaii And Arkansas, Caleb Kenji Watanabe Dec 2011

Islands And Swamps: A Comparison Of The Japanese American Internment Experience In Hawaii And Arkansas, Caleb Kenji Watanabe

Graduate Theses and Dissertations

Comparing the Japanese American relocation centers of Arkansas and the camp systems of Hawaii shows that internment was not U\universally detrimental to those held within its confines. Internment in Hawaii was far more severe than it was in Arkansas. This claim is supported by both primary sources, derived mainly from oral interviews, and secondary sources made up of scholarly research that has been conducted on the topic since the events of Japanese American internment occurred. The events of Japanese American Internment in Hawaii and Arkansas are important to remember because they show how far the American government can infringe on …

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Sublime Beauty & Horrible Fucking Things - The Finer Worlds Of Warren Ellis, William James Allred Dec 2011

Sublime Beauty & Horrible Fucking Things - The Finer Worlds Of Warren Ellis, William James Allred

Graduate Theses and Dissertations

This work constitutes an in-depth discussion of the muted postmodern characteristics of contemporary comics writer and novelist Warren Ellis, highlighting his major long-form works within comics, Planetary, Transmetropolitan, StormWatch, and The Authority, as well as several shorter works such as Ocean, Orbiter, and Global Frequency. In addition, Ellis is situated within the British science fiction tradition, specifically, the British Boom movement which contains other comics writers such as Neil Gaiman and Alan Moore.

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Mathematically Gifted Students' Experiences Of Challenge With Cognitively Guided Instruction, Kim Krusen Mccomas Dec 2011

Mathematically Gifted Students' Experiences Of Challenge With Cognitively Guided Instruction, Kim Krusen Mccomas

Graduate Theses and Dissertations

This study examined to what extent and in what ways mathematically gifted students were challenged in two elementary classrooms taught by exemplary teachers using the principles of Cognitively Guided Instruction (CGI). The two case studies included a third grade class and a fourth/fifth split grade class, with five mathematically advanced participants from each grade. A top tier and a second tier of mathematically advanced students were identified, with the top tier of five students identified as mathematically gifted. Classroom observations of CGI math lessons, interviews with students and teachers, and analysis of students' problem-solving strategies were conducted over a five …

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The Thundering Throne: Personality, Poetics, And Gender In The Court Of King Henry Viii, Rebecca Marie Moore Dec 2011

The Thundering Throne: Personality, Poetics, And Gender In The Court Of King Henry Viii, Rebecca Marie Moore

Graduate Theses and Dissertations

This work examines gender in the court of King Henry VIII, focusing specifically on the role that the power and weight of Henry's personal decisions played in shaping the contemporary Social definitions of femininity, masculinity, and courtiership. The space of courtiership is particularly open to such inquiry because this space was so often one that revealed the fissures and failures in attempts to maintain the strict binaries that privileged hegemonic masculinity under Henry. These definitions, then, will be reflected in, as well as shaped by, court poetry and, as explored in the final chapter, prose. Literature produced within the context …

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Defining, Executing And Visualizing Representative Workflows In A Retail Domain, May Zeineldin Dec 2011

Defining, Executing And Visualizing Representative Workflows In A Retail Domain, May Zeineldin

Graduate Theses and Dissertations

Our lives are filled with routine activities that we do more or less on auto-pilot such as driving to work and cooking. This thesis explores a workflow representation as a way to represent such activities of daily living. The domain of a retail store environment is used. Workflows are initially expressed in a structured English representation, then translated into a Petri net notation and implemented in mix of Petri nets, Lua, and C so that the resulting workflows can be displayed as the actions of collections of avatarbots (avatars controlled by programs) in a 3D virtual world, Second Life. One …

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Trafficking Of Women In Nepal: An Intersectional Analysis Of Organizational Narratives, Bhavana Mahat Dec 2011

Trafficking Of Women In Nepal: An Intersectional Analysis Of Organizational Narratives, Bhavana Mahat

Graduate Theses and Dissertations

In Nepal, sex trafficking is usually associated with poverty, illiteracy and gender discrimination. To better understand the discursive dimensions of sex trafficking, this research examines the organizational narratives of the Nepalese anti-trafficking workers using the analytical framework of intersectionality. This study finds that the anti-trafficking workers' organizational narratives are influenced by both personal and institutional narratives. In their personal narratives, anti-trafficking workers recognize the multiple forms of discrimination shaping the victims' experiences, but the intersectional discriminations are rarely addressed in the anti-trafficking programs or services implemented by the non-profit organizations. After having identified sex-trafficking victims as experiencing discrimination based on …

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Teachers' Perceptions Toward The Secondary Physical Education Program In The State Of Kuwait, Khaled A. Al-Kandari Dec 2011

Teachers' Perceptions Toward The Secondary Physical Education Program In The State Of Kuwait, Khaled A. Al-Kandari

Graduate Theses and Dissertations

The purpose of this research was to determine the perceptions of physical education teachers and supervisors toward the secondary physical education program in eight domains in the State of Kuwait. Stratified and cluster sampling were used to select two schools of female teachers and two schools of male teachers from each district (6 districts); therefore, 24 schools were selected randomly. One hundred thirty-eight physical education teachers were selected and 66 supervisors were selected. A four-point rating scale (i.e., strongly disagree to strongly agree) and open-ended questions were included in the survey. Cronbach's alpha reliability, descriptive statistics, and independent sample t …

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Integration Of Racially And Ethnically Diverse Modern Day Military Veterans In American Higher Education, Cedric Mandell Kenner Dec 2011

Integration Of Racially And Ethnically Diverse Modern Day Military Veterans In American Higher Education, Cedric Mandell Kenner

Graduate Theses and Dissertations

This study focused on examining the integration and transition challenges of racially and ethnically diverse modern day military veterans at a predominantly white research university. Modern day racially and ethnically diverse veterans who have been retained at the institution past their freshman year were invited to participate in the study. Tinto's (1975) Student Integration Model (SIM) served as the theoretical framework for the study which focused on retention and academic support strategies that could be appropriate for racially and ethnically diverse modern day military veterans in American higher education. The methodology utilized in this study was phenomenology which utilized interviews …

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Fathers And Their Views On Discussing Sex And Sexuality With Their Daughters, Kindann M. Stone Dec 2011

Fathers And Their Views On Discussing Sex And Sexuality With Their Daughters, Kindann M. Stone

Graduate Theses and Dissertations

The purpose of this research project was to identify characteristics and perceptions of fathers associated with discussions about sex and sexuality with their daughters. Parental communication, education, and value sharing reduces the risk of STD's and teen pregnancy. Participants were fathers (N=108) who were recruited by their daughters who were attending a Southeastern University. Demographics were utilized and researcher developed modified scales used in previous studies (citation). The newly developed scales were the Sexual Knowledge Inventory (SKI), Value of Self-Efficacy of Sexuality Communication (VSESC), Safe Sex of Self Efficacy of Sexuality Communication (SSSESC), Father's Role as Sex Educators Outcome Expectancy …

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The Effects Of Scheduling On Criterion-Referenced Assessments In Arkansas High Schools, Sheila Marie Trinkle Dec 2011

The Effects Of Scheduling On Criterion-Referenced Assessments In Arkansas High Schools, Sheila Marie Trinkle

Graduate Theses and Dissertations

The purpose of this study is to examine the differences in achievement on the end of course assessment in Geometry and the Grade 11 Literacy exam administered to students in Arkansas during the 2005-2006 and 2006-2007 school years. The three main types of scheduling are the traditional schedule with seven or eight periods; the A/B, or the alternating block; and the 4 x 4, or accelerated block. The traditional was utilized by 90% of schools in Arkansas during this time frame. The A/B block and 4 x 4 block were used almost equally, each representing approximately 5% of Arkansas schools. …

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A Multiple Case Study Of Principals' Instructional Leadership In "Level 5" Schools Of Excellence For Improvement, Janice V. Mccoy Dec 2011

A Multiple Case Study Of Principals' Instructional Leadership In "Level 5" Schools Of Excellence For Improvement, Janice V. Mccoy

Graduate Theses and Dissertations

After 28 years of federal and state policy development, regional and local initiatives and various budgetary appropriations, the status of American schools continues to decline. Lyne (2001) reported that Finland, Japan and Korea had the world's highest literacy in reading, math, and science, while the United States ranked 15 in reading literacy, 19 in mathematical literacy, and 14 in scientific literacy. Many factors may contribute to the decline in America's schools. However, with the prevailing economic decline in the United States schools continue to struggle with student achievement, especially students with who are low socio-economic. In addition, to meeting the …

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The Ins And Outs Of Prostitution: A Moral Analysis, Kathryn Alice Zawisza Dec 2011

The Ins And Outs Of Prostitution: A Moral Analysis, Kathryn Alice Zawisza

Graduate Theses and Dissertations

Prostitution is illegal in almost all parts of the United States. Regardless of whether one considers this to be positive or negative, prostitution is still a booming business and thrives despite the legal ramifications of the practice. The pervasiveness of prostitution despite its prohibition may lead one to question the point of the legislation if enforcement is so costly and ineffective. Is prostitution illegal because it harms the well being of society as a whole and the prostitute in particular? Or perhaps it is simply distasteful or worse, immoral and must be forbidden by the law. This, however, leads to …

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Exploring First Generation African American Graduate Students: Motivating Factors For Pursuing A Doctoral Degree, Stephanie G. Adams Dec 2011

Exploring First Generation African American Graduate Students: Motivating Factors For Pursuing A Doctoral Degree, Stephanie G. Adams

Graduate Theses and Dissertations

The purpose for conducting the study was to examine the factors that motivate African-American first-generation students to pursue doctoral education at a four-year public university. There has been little research on the influence academic or non-academic factors have on first-generation graduate student motivation. Similarly, little research exists that explored how factors might vary by ethnicity. Based on the projected increase of post-baccalaureate enrollment each year (Aud, Hussar, Planty, Snyder, Bianco, Fox, Frohlich, Kemp, Drake, 2010), first-generation African-Americans will become more interested in attending graduate school. It is important to gain a better understanding of the factors and influences that impact …

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Returning The Ticket: Rejecting God In Dostoevsky's The Brothers Karamazov And Hardy's Jude The Obscure, Molly Throgmorton Dec 2011

Returning The Ticket: Rejecting God In Dostoevsky's The Brothers Karamazov And Hardy's Jude The Obscure, Molly Throgmorton

Graduate Theses and Dissertations

Fyodor Dostoevsky and Thomas Hardy both explored the intricacies of the burgeoning spiritual crisis of the late 19th and early 20th centuries in their works. The two most prominent of these works, Dostoevsky's The Brothers Karamazov and Hardy's Jude the Obscure, show the stories of two characters, Ivan and Jude respectively, that choose to reject God. This thesis explores the connection between these two characters, specifically as they represent the two authors' outsider characters. It looks at the reasons behind their rejection, the ways that their rejection plays out in their lives, and the novels' alternatives, namely Christianity and selfless …

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An Analysis Of The North Carolina Cooperative Extension Service's Role In Bridging The Digital Divide, Antoine J. Alston, Lashawn Hilton, Chastity Warren English, Chanda Elbert, Dexter Wakefield Dec 2011

An Analysis Of The North Carolina Cooperative Extension Service's Role In Bridging The Digital Divide, Antoine J. Alston, Lashawn Hilton, Chastity Warren English, Chanda Elbert, Dexter Wakefield

Journal of Extension

The study reported here sought to determine the perception of North Carolina County Cooperative Extension directors in regard to the North Carolina Cooperative Extension Service's role in bridging the digital divide. It was perceived by respondents that variables such as income, education, gender, disability status, race/ethnicity, age, and geographic location (rural versus urban) are major factors in the digital divide. Recommendations are made regarding North Carolina Cooperative Extension forming partnerships in order to narrow the digital divide in its regions, in addition to developing educational programming efforts in this area for all clientele served.

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Nebraska's Traditional Cultural Properties In The Section 106 Process, Karen A. Steinauer Dec 2011

Nebraska's Traditional Cultural Properties In The Section 106 Process, Karen A. Steinauer

Department of Anthropology: Theses and Student Research

Archeologists engaged in cultural resource management and compliance are charged with measuring “historic” properties against legal standards for purposes of federal protection. This thesis focuses on one kind of property, the Traditional Cultural Property (TCP), within the National Historic Preservation Act (NHPA) Section 106 process, where sometimes in practice the terms TCP and sacred site are used interchangeably. This thesis strives to bring precision to TCPs, provide a concise reference, and, through inspection and analysis of four case studies of Nebraska properties, critique the present process for identifying and evaluating TCPs.

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Native Artists Helping Our People Endure (Hope): A Social Capital Analysis Of A Grassroots Art Initiative To Address Youth Suicide In An Indigenous Community, Nathania Tsosie Dec 2011

Native Artists Helping Our People Endure (Hope): A Social Capital Analysis Of A Grassroots Art Initiative To Address Youth Suicide In An Indigenous Community, Nathania Tsosie

Architecture and Planning ETDs

This study identifies and examines the components of social capital related to a grassroots initiative to address Indigenous youth suicide through art. The Native Artists for HOPE’s Thoreau Youth Art Project was organized by a small group of professional Native American artists in response to a sudden increase of youth suicide in a community on the Navajo Nation. Built on cultural core values identified by the artists themselves, the day long workshop encourages self-expression and creativity as an alternative to risky behaviors believed by community members to be related to suicide. A brief literature review of social capital including its …

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Poster For Monday Lecture Series, Indigenous Architecture Lecture Series Dec 2011

Poster For Monday Lecture Series, Indigenous Architecture Lecture Series

Lectures

Fall 2010 Monday Night Lecture Series, 5:30-6:45, Pearl Auditorium, SAAP, UNM

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Efficiently Bootstrapping Extreme Scale Software Systems, Joshua Goehner Dec 2011

Efficiently Bootstrapping Extreme Scale Software Systems, Joshua Goehner

Computer Science ETDs

Many scientific fields and commercial industries need to solve computationally large problems. These problems can often be broken into smaller tasks, which can be executed in parallel, on large computer systems. In pursuit of solving ever larger problems in a more timely manner, the number of nodes in these large computer systems have grown to extremely large scales. All of the extreme-scale-software systems that run on these extreme-scale-computational systems go through what we call a bootstrapping phase. During this phase, the software system is deployed onto a set of computers and its initialization information is disseminated. In this thesis, we …

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