Digital Commons Network^™

Video Quality Measurement For 3g Handsets, Praveen Enjapuri

School of Engineering, Computing and Mathematics Theses

Internet provides many services. VOIP (Voice over IP) is one such service also known as Internet Telephony or IP Telephony. Using VOIP we can make voice telephony calls, participate in video conferences, etc over data networks (WAN'S and LAN'S) or internet. VOIP operates by first converting voice data into digital form, organizing them into packets, transmitting them through the most convenient route to their destination and finally reassembling them at the destination. Protocols like SIP/RTP, H.323, MGCP are designed which perform all the above steps. This project aims to make a video call from a 3G Mobile to an IP …

Announcements

The Writing Center Journal

No abstract provided.

Information For The Authors

The Writing Center Journal

No abstract provided.

Local Practices, National Consequences: Surveying And (Re)Constructing Writing Center Identities, Jo Ann Griffin, Daniel Keller, Iswari P. Pandey, Anne-Marie Pedersen, Carolyn Skinner

The Writing Center Journal

No abstract provided.

The Quality Movement Discourse In The Higher Education Sector: A General Review, Aidan Kenny

Level 3

This paper – the first of a series of three – describes some of the macro milestones in the evolution of the Quality Movement in the industrial environment. The emphasis then shifts to reviewing the discourse relating to quality in the higher education sector in the UK. Attention is given to Quality Assessment, Quality Assurance and Quality Enhancement models. The interface or tension lines between quality as a controlling mechanism or as a tool for development are outlined. Predominant concerns and issues as expressed by academics are clustered into macro questions, the answers to which will require further longitudinal research. …

Effects Of Retinal Image Degradation On Pre-Attentive Visual Search (Pavs) Efficiency For Flicker, Movment And Orientation Stimuli, Peter Davison, James Loughman

Articles

Background: Previous research has shown that several clinical conditions cause increased pre-attentive visual search (PAVS) times, implying reduced parallel search capabilities in glaucoma and DLB dementia. The purpose of the research reported here was to examine for the first time the resistance of PAVS to dioptric blur using targets differing from the background in terms of flicker, vertical displacement, and orientation. Resistance would enhance the applicability of PAVS as a screening method for glaucoma and other clinical conditions affecting performance of a substantial area of the retina. Method: Computer generated flicker, orientation and vertical displacement targets were used to assess …

Blended Problem-Based Learning For Teacher Education: Lessons Learnt, Roisin Donnelly

Journal Articles

Journal of Learning, Media and Technology, Vol. 31, 2, 2006, pp. 93-116

Available from the Publisher http://www.tandfonline.com/doi/abs/10.1080/17439880600756621

Using Sketches And Knowledge Bases For Geo-Spatial Image Retrieval, Michela Bertolotto, James Carswell, E Mcloughlin, D O'Sullivan, C Wilson

Articles

This paper presents research in the field of knowledge management for geo-spatial imagery including scanned aerial photos and satellite images. We have developed a web-based system that allows users to query a database of images not only using metadata, but also drawing sketches of configurations of objects they are interested in as well as inputting textual descriptions of their intended task. Our system integrates case-based reasoning techniques to form a knowledge base from previously issued queries that can be exploited to improve future query processing and to build organizational memory through experience capture. The effective design and implementation of a …

Musical Pattern Design Using Contour Icons, Charlie Cullen, Eugene Coyle

Conference papers

This paper considers the use of Contour Icons in the design and implementation of musical patterns, for the purposes of detection and recognition. Research work had endeavoured to deliver musical patterns that were both distinct and memorable, and to this end a set of basic melodic shapes were introduced using a Sonification application called TrioSon that had been designed for the purpose. Existing work in the field (such as that concerning Earcon design) has considered the mechanisms by which patterns may be made distinctive, but it is argued that separate consideration must be given to the method of making such …

Survival Of Antibiotic Resistant And Antibiotic Sensitive Strains Of E. Coli O157 And E. Coli O26 In Food Matrices., Ciara Walsh, Geraldine Duffy, I. S. Blair, D. A. Mcdowell

Articles

Escherichia coli O157:H7 or E. coli O26, which were AS (antibiotic sensitive), AR (laboratory created antibiotic resistant mutants), or naturally MAR (multi-antibiotic resistant), were inoculated into laboratory media, yoghurt or orange juice and their growth/survival monitored during enrichment at 37 °C or storage at 4 °C. The strains were also inoculated into minced beef and their thermal inactivation (D-values) examined at 55 °C, with and without a prior heat shock at 48 °C. The growth kinetics (lag phases, growth rates) of the VTEC (verocytotoxigenic E. coli), incubated over 24 h at 37 °C in laboratory media, were …

Irish Marketing Review, Vol. 18, No. 1 & 2, 2006, The Marketing Institute

Issues

The Irish Marketing Review deals with issues, developments, research and practise in marketing. This is a special issue on " the island view of relationship marketing and networks".

Indexing Change In Lis Work: Implications For Recruiting Managers, John Cullen, Allison Kavanagh

Articles

Purpose: This paper reports on three periods of library and information service (LIS) recruitment data collected over a six-year timeframe with the aim of developing a tool for indexing change in the recruitment and labour market for workers in the field. Methodology / Approach: The recruitment data was collected in an Irish context over three distinct 12-month timeframes (1999, 2001-2002 and 2005). The two earlier annual sets of data have already been reported and discussed (the latter in Library Management in 2004a), and the most recent set (2005) is presented here. The data over the three timeframes is compared here, …

Iowa Physical Educators’ Access To Usage Of, And Perceived Importance Of Technology In The Field Of Physical Education, Jennifer Hadler

Dissertations and Theses @ UNI

The primary purpose of this study was to investigate the attitudes of Iowa physical education teachers regarding the importance of various technologies available for use in a physical education classroom. A second purpose was to determine the access to and usage of selected pieces of technology. Data were compared based on years of teaching experience and gender. A questionnaire was sent to Iowa physical educators to determine access and use of 20 different pieces of technology. Teachers also ranked the importance of each technology as "Important," "Somewhat Important," or "Not Important." Results of the study indicated the most accessible technologies …

Self-Esteem, Locus Of Control, Conformity, And The Psychology Behind Body Modification, Brianne Renae Arends

Dissertations and Theses @ UNI

The current study examined the psychological characteristics of individuals with and without tattoos and body piercings, along with their perceptions of cosmetic surgery as either positive or negative. Psychological characteristics measured included: self-esteem, locus of control, conformity, and fear of negative evaluation. Participants were ninety-seven individuals who completed paper-and-pencil measures encompassing the various psychological characteristics as well as a demographic and risk assessment questionnaire. Participants were recruited through the PSPM system established by the University of Northern Iowa and did not significantly vary on demographic information provided. The current study's hypotheses based upon similar research were: (1) individuals who approve …

The Relationship Between Sexual Behavior And Relational Aggression In College Students, Hiliary Baethke

Dissertations and Theses @ UNI

Although the study of relational aggression has been the subject of more research since Crick and Grotpeter (1995) first defined the term, the impact of this form of aggression on college students is still an area that requires more study. Relational aggression is defined as "harming others through purposeful manipulation and damage of their peer relationships" (Crick & Grotpeter, 1995). Current research on relational aggression has established that women are more likely to engage in relational aggression then men (Crick, Bigbee, & Howes, 1996). While research has typically focused on the impact of relational aggression on friendship groups, the impact …

Gender Socialization Through Children’S Literature: Body And Beauty Image, Meera Basnet

Dissertations and Theses @ UNI

This exploratory study centers on a small number of children's books to examine how female characters are portrayed, and to consider the question, "Do gendered images of female characters exist visually in children's literature? I selected 5 books from the time periods of 1980 to 1989 and from 2000 to 2005. These books were written by U.S. authors and are directed at children aged 5-8 years. Findings are tentative, based upon the limited number of books included in the study, but patterns indicate that children's literature portrays gender somewhat stereotypically. I include body structure, dress, beauty and decoration, and movement …

Twins In The Kindergarten Classroom : What Factors Do Parents Consider When Deciding Whether To Place Their Same-Gendered Twins In Separate Or Joint Classrooms?, Tammy Marie Gehling

Dissertations and Theses @ UNI

In this qualitative research project, the topic of kindergarten placement of same-gendered twins is investigated through interviews with three mothers of young twins in a medium-sized Midwestern city. Specifically, the issue of what parents believe is the "best" placement for same-gendered twins is discussed, along with factors that shaped this decision. Advantages of both separate and joint kindergarten placement are discussed, along with such issues as patterns of twinship, mandatory placement policies, and early-onset separation anxiety. Recommendations are provided for both parents and educators regarding this issue.

Self-Perceptions And Peer Influence On Bullying Behavior, Jaime Strickler

Dissertations and Theses @ UNI

The purpose of this paper is to determine the self-perceptions of bullies and peer influence on bullying behavior. These variables were chosen in an attempt to understand some of the potential causes of bullying behavior and to examine their effects during bullying episodes.

While the self-perceptions of bullies may be positive or negative, it is unclear as to the direction of influence between self-perceptions and bullying. Peer influence on bullying can vary from situation to situation, but it is clear that peers do have an influence in bullying situations.

Correlation Between Acculturation And Health Promotion Behavior Among Hispanics/Latinos In Black Hawk County, Iowa, Ki-Hyung Park

Dissertations and Theses @ UNI

The elimination of the health disparities between different segments of population such as ethnic or racial minority groups in the United States is one of the principal goals of Healthy People 2010. Since 2002, the Hispanic/Latino population has been the largest minority group in the United States, and currently Hispanic/Latinos are the largest minority group in Iowa. The study assesses the relationships among health status, health promoting behavior, and acculturation of Hispanic/Latino immigrants in Black Hawk County, Iowa. A community sample of 54 adults completed a face-to-face structured interview. The instrumentation included the Acculturation Rating Scale for Mexican Americans-II (ARSMA-II), …

“Votes For Women”: Gender, ‘Race,’ Class, And The Suffrage Cartoons Of Life And Harper’S Weekly, 1890-1916, Mellisa Annesha Campbell

Dissertations and Theses @ UNI

The 1890s onward ushered in a younger generation of female pro-suffragists in the United States of America (USA). Theoretically slamming the door on the prescriptive ideal of domesticity and women's abstinence from vice and exercise, they disrupted the "traditional" gender fiction or arrangement. In doing so, they made unequivocal that gender, 'race,' and class were not merely culturally constructed categories of identity, but products of the heteropatriarchal power structure which produce and reproduce masculine dominance over women. These female pro-suffragists were, more often than not, condemned by contemporary popular press. They were prevalently depicted as elite white women seeking amusement …

Links Between Late Adolescents’ Tendency For Mild To Moderate Violence And School Shooters, Elizabeth Ruth Strey Christenson

Dissertations and Theses @ UNI

Violent crimes committed by youth in their school environments have been a focus of concern in recent years. Since the tragedy at Columbine High School and the subsequent copycat efforts many questions have been raised by the public regarding how and why these school shootings occurred. In response to these questions, the Federal Bureau of Investigation produced a report listing 46 characteristics from four main categories (Personality Traits and Behavior, Family Dynamics, School Dynamics, and Social Dynamics) that they determined to be common characteristics of school shooters. However, since school shootings occur so rarely there is no completely accurate way …

Alternative High Schools: What Types Of Programs Lead To The Greatest Level Of Effectiveness?, Timothy W. Gilson

Dissertations and Theses @ UNI

Based on the writings and research of Mary Anne Raywid and Gary Wehlage, this study sought to identify characteristics of effective alternative high schools in Iowa. This effectiveness was identified as both student retention and graduate completion.

The researcher-developed survey instrument was distributed to seventy alternative school directors and/or instructors within the state of Iowa. The schools identified were those classified by the Iowa High School Athletic Association as class A through 3A. With sixty-one surveys completed and returned, this study proceeded with an 87% response rate.

The following conclusions were drawn based on the results of this study: (a) …

Effects Of Welding Current In Gas Metal Arc Welding, Junling Hu, Tai Lung Tsai

Mechanical and Aerospace Engineering Faculty Research & Creative Works

In gas metal arc welding (GMAW), current is one of the most important factors affecting the mode of metal transfer, weld pool dynamics and subsequently the weld quality. in this paper, the comprehensive model recently developed by the authors was used to study the effects of different current levels on the droplet formation, plasma generation, metal transfer, and weld pool dynamics in GMA welding. Two welding currents were studied, including one low current and one high current. at each current level, the transient temperature and velocity distributions of the arc plasma and the molten metal, and the shapes of the …

Exploring Intersectionality In Education: The Intersection Of Gender, Race, Disability, And Class, Amy J. Petersen

Dissertations and Theses @ UNI

The purpose of this study was to explore the intersection of gender, race, disability, and class within education. Specifically, I examined the educational experiences of African American women labeled with a disability and from a disadvantaged socio-economic class. Employing qualitative methodology and methods, I interviewed four adult African American women from disadvantaged socio-economic groups to gain a deeper understanding of their lived educational experiences.

The story that emerged from this research was each participant's strength. Their stories revealed that each woman persistently and continually engaged in the world around them in order to negotiate, evade, and resist the dominant ideology …

The Authority Of Traditional Islamic Leaders: A Sociological Study Of Kyai's Authority In Pesantren, Achmad Zainal Arifin

Dissertations and Theses @ UNI

The 9/11 tragedy, followed by the War on Terror policy have brought serious impacts on a study of Islam, especially regarding the issue of terrorism. An absolute authority of traditional Islamic leaders is often blamed as a source of religious violence. Their charismatic leaderships are considered having threats for the rest of the world. Imbalanced information provided by the Western media about Islam neglected a peaceful side of lslamic teachings. Through sociological perspective, especially the concept of authority from Weber, this thesis provides an alternative description of the authority of traditional Islamic leader in Indonesia, so-called kyai, the owner …

Objectified Body Consciousness And Eating Attitudes And Behaviors Of College Females And Males, Danielle Jo Eastman

Dissertations and Theses @ UNI

This study investigated the relationship between objectified body consciousness (OBC) and eating attitudes and behaviors of both female and male students at a Midwestern university. Based on a survey completed by 369 females and 181 males, relationships between OBC as measured by the Objectified Body Consciousness Scale (OBCS; McKinley, 1995) and eating attitudes and behaviors as measured by the Eating Attitudes Test (EAT-26; Garner, Olmstead, Bohr, & Garfinkle, 1982) were analyzed using Pearson product-moment correlations. The OBCS consists of three subscales representing body surveillance, body shame, and control beliefs. A higher score on the EA T-26 indicates an increased likelihood …

Bible Beater/Bra Burner: Liminal Experiences Of Christian & Feminist Identity, Jennifer Lynn Freitag

Dissertations and Theses @ UNI

Bible Beater/Bra Burner: Liminal Experiences of Christian & Feminist identity explores the relationship between Christian and feminist identity. Through ethnography and ethnodrama, this project examines the ways fifteen women in eastern Iowa negotiate the relationship between Christianity and feminism in their daily lives, the ways language functions for and against these performances of self, and the ways staged performance can be used to approach these specific issues of women's identity. The ethnodrama written from interview and autoethnographic data, Bible Beater/Bra Burner, was performed in the University of Northern Iowa Interpreters Theatre on April 20-22, 2006. Bible Beater/Bra Burner employs creative …

Improving Channel Throughput Of Wlans And Ad Hoc Networks Using Explicit Denial Of Requests, Maggie Xiaoyan Cheng, Yadi Ma, Yi Wang

Computer Science Faculty Research & Creative Works

A new Multiple Access Control scheme for wireless ad hoc networks and WLANs is proposed. This scheme uses explicit denial of channel requests and a busy tone to improve channel throughput. Performance analysis shows significant improvement when the network is under heavy traffic load.

Modeling Of Dielectric Mixtures Containing Conducting Inclusions With Statistically Distributed Aspect Ratio, Marina Koledintseva, Sandeep K. R. Chandra, Richard E. Dubroff, Robert W. Schwartz

Electrical and Computer Engineering Faculty Research & Creative Works

An analytical model of composites made of a dielectric base and randomly oriented metal inclusions in the form of nanorods is presented. This model is based on the generalized Maxwell Garnett (MG) mixing rule. In this model, the nanorod particles are modeled as prolate spheroids with a statistically normal distribution of their aspect ratios. It is shown that parameters of the distribution laws affect the frequency characteristics of the composites both at microwave and optical frequencies. The results of computations are represented.

Asia Pacific Perspectives Vol. 6 No. 1, May 2006, University Of San Francisco, University Of San Francisco

Asia Pacific Perspectives

Contents:

Philippine Studies and the Centennial of the Diaspora: An Introduction by Joaquin L. Gonzalez III, and Evelyn I. Rodriguez

Primerang Bituin: Philippines-Mexico Relations at the Dawn of the Pacific Rim Century by Evelyn I. Rodriguez

Since the end of WWII, the region of countries bordering, and various island nations within, the Pacific Ocean, has drawn much attention, and been subject to a variety of institutional arrangements intended to promote certain political, economic, and environmental interests. Because of this, the mid-twentieth century is widely held as the starting point for Pacific Rim relations, and studies of Pan-Pacific interactions almost strictly …