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Holographic Recording In Acrylamide Photopolymers: Thickness Limitations, Mohammad Mahmud, Izabela Naydenova, Nitesh Pandey, Tzvetanka Babeva, Raghavendra Jallapuram, Suzanne Martin, Vincent Toal

Articles

Holographic recording in thick photopolymer layers is important for application in holographic data storage, volume holographic filters and correlators. Here, the characteristics of acrylamidebased photopolymer layers having thickness from 250 μm to 1-mm were studied. For each layer thickness samples with three different values of absorbance were studied. By measuring both the first order diffraction efficiency growth of holographically recorded gratings and studying the diffraction patterns obtained, the influence of scattering on the diffraction efficiency of thick volume holographic gratings was analyzed. It was observed that above a particular thickness and absorbance, the first order diffraction efficiency significantly decreased because …

Regulation Of The Fibrosis And Angiogenesis Promoter Sparc/Osteonectin In Human Adipose Tissue By Weight Change, Leptin, Insulin, And Glucose., Katrina Kos, Steve Wong, Bee Tan, Anders Gummesson, Margareta Jernas, Niclas Franck, David Kerrigan, Fredrik H. Nystrom, Lena M.S. Carlsson, Harpal S. Randeva, Jonathan H. Pinkney, John P.H. Wilding

Peninsula Medical School

OBJECTIVE: Matricellular Secreted Protein, Acidic and Rich in Cysteine (SPARC), originally discovered in bone as osteonectin, is a mediator of collagen deposition and promotes fibrosis. Adipose tissue collagen has recently been found to be linked with metabolic dysregulation. Therefore, we tested the hypothesis that SPARC in human adipose tissue is influenced by glucose metabolism and adipokines. RESEARCH DESIGN AND METHODS: Serum and adipose tissue biopsies were obtained from morbidly obese nondiabetic subjects undergoing bariatric surgery and lean control subjects for analysis of metabolic markers, SPARC, and various cytokines (RT-PCR). Additionally, 24 obese subjects underwent a very-low-calorie diet of 1,883 kJ …

Output Feedback Adaptive Control Of A Class Of Nonlinear Discrete-Time Systems With Unknown Control Directions, C Yang, Ss Ge, Th Lee

School of Engineering, Computing and Mathematics

In this paper, output feedback adaptive control is investigated for a class of nonlinear systems in output-feedback form with unknown control gains. To construct output feedback control, the system is transformed into the form of the NARMA (nonlinear-auto-regressive-moving-average) model, based on which future output prediction is carried out. With employment of the predicted future output, a constructive output feedback adaptive control is given with the discrete Nussbaum gain exploited to overcome the difficulty due to unknown control directions. Under the global Lipschitz condition of the system functions, the boundedness of all the closed-loop signals and asymptotical output tracking are achieved …

Long-Term Evolution Of Strongly Nonlinear Internal Solitary Waves In A Rotating Channel, Jc Sanchez-Garrido, V. Vlasenko

School of Biological and Marine Sciences

No abstract provided.

Supreme Seafoods, Thomas Cooney

Articles

No abstract provided.

When Is A Terrorist Not A Terrorist?: American And Chinese Media Portrayals Of The Chinese Uighur Minority Pre And Post 9/11, Anna File, '09

Honors Projects

Over the past sixty years the Uighur population in China has faced a variety of complex issues, both domestically and internationally. In large part due to their geopolitical positioning as inhabitants of Xinjiang Province as well owing to several issues with their Muslim faith, Uighurs have constantly been at odds with the Communist traditions imposed upon them by the central Chinese government. Not only do problems with their religion affect them nationally, but more recently with the trend towards suspicion of Muslim groups by Westerners, the Uighurs are in a seemingly helpless position. This paper hypothesizes however, that this has …

Explaining Ethnic Peace: The Importance Of Institutions, Rebecca Tong, '09

Honors Projects

This paper examines the cause of ethnic peace, and subsequently, the cause of ethnic violence. Varying theories explain ethnic violence: primordialism, instrumentalism, and constructivism. The question central to this study is how master narratives, scarce resources, and democratic institutions have influenced the occurrence of ethnic violence. Small n comparison is used to analyze two pairs of sub-Saharan African nations in order to control for other explanatory variables: (1) Cote d'Ivoire and Ghana, and (2) Kenya and Tanzania. In each pair, one nation is relatively peaceful and the other relatively violent. Drawing from ethnographic research papers, and news sources this paper …

Information For Authors

The Writing Center Journal

No abstract provided.

New Media Matters: Tutoring In The Late Age Of Print, Jackie Grutsch Mckinney

The Writing Center Journal

No abstract provided.

Experiencing Interaction Design: A Pragmatic Theory, Ronald Lengkong Wakkary

School of Engineering, Computing and Mathematics Theses

This thesis contributes a theory for the field of interaction design based on philosophical pragmatism. The theory frames interaction design as a pragmatic experience shaped by the inquiries of designers. The contributions of the theory are that it positions the designer at the centre of a theory, describes interaction design practice to be more than a collection of methods and strategies, and provides a sound basis for generating and verifying new knowledge through design. The thesis describes and analyzes two interaction design research projects through self-reflexive accounts that illustrate the proposed theory. The projects are a tangible museum guide and …

Acute Effects Of Self-Paced Walking On Smoking Withdrawal And Cravings, Magdalena Katomeri

School of Psychology Theses

High relapse rates among smokers attempting to quit have been linked with failure to cope with cigarette cravings and withdrawal symptoms. Smoking cravings and withdrawal behavior is known to be influenced by stress and exposure to smoking cues. Exercise appears to reduce cigarette cravings and withdrawal symptoms. However no study has investigated the effects of exercise on cue-elicited cravings and withdrawal symptoms, or on ad libitum smoking behavior. Aim: Four experimental studies were designed to examine the effects of exercise on smoking behavior. Initial studies focused on the effects of a single session of brisk walk on cigarette cravings and …

Introduction: Approaches To Qualitative Research, John Hogan, Paddy Dolan, Paul Donnelly

Books/Book Chapters

Undertaking a dissertation can be a daunting prospect, irrespective of whether a student is an undergraduate or a postgraduate. The idea of having to start with a blank sheet of paper and finish with anything between 15,000 words for an undergraduate dissertation, and 100,000 words of a PhD dissertation, is an arresting thought. But, even these coarse figures fail to capture the true extent of the work involved, as a finished dissertation is usually only a distillation of volumes of work and words that far exceed the finished product ultimately presented. The various chapters present examples for dissertation students in …

Qualitative Methodology Discussion, Marian Crowley-Henry, Paddy Dolan, Paul Donnelly, Olivia Freeman, John Hogan, Conor Horan, Brendan O'Rourke

Books/Book Chapters

This chapter presents a discussion on the nature of qualitative research. In it, a number of contributors to the book sit down for a general roundtable discussion on qualitative methodologies. Here they express their thinking in relation to a range of questions on qualitative methodologies put to them by the moderator, one of the editors of the volume. The objective of the chapter is to provide readers with an insight into a free flowing discussion amongst academics on the nature of qualitative research. This takes the readers outside of the carefully structured arguments of the authors, as set out in …

Supreme Seafoods, Thomas Cooney

Case studies

Fintan Barrett’s four year old daughter would often turn to him while playing and exclaim “what to do, Daddy?” Indeed, this very question of what to do next had frequently swirled around his own head as he considered the options that were now available to him and his business Supreme Seafoods. Some commentators had described the recent economic crisis as ‘a perfect storm’ and that analogy was particularly apt for someone operating in the fish industry. Although Fintan’s family had worked in the fishing industry for many generations, whether out at sea or processing and selling fish on land, the …

Signs Of Access In A Digital World: Online Delivery Of Deaf Studies Curricula In Ireland At Third Level,, Brian Nolan, Lorraine Leeson

Conference Papers

Irish Sign Language (ISL), an indigenous language of Ireland, is recognized by the European Union as a natural language. It is a language separate from the other languages used in Ireland, including English, Irish, and, in Northern Ireland, British Sign Language. Some 5,000 Deaf people use ISL. Given the history of suppression of signed languages across the EU, the average Deaf person leaves school with a reading age of 8.5 to 9 years. Given this, it is no surprise that Deaf people are the most under-represented of all disadvantaged groups at third level. This poses two challenges: (1) getting Deaf …

Preparation, Characterization Of Nipam And Nipam/Bam Copolymer Nanoparticles And Their Acute Toxicity Testing Using An Aquatic Test Battery, Pratap Naha, Alan Casey, Tiziana Tenuta, Iseult Lynch, Kenneth Dawson, Hugh Byrne, Maria Davoren

Articles

Poly N-isopropylacrylamide and N-isopropylacrylamide / N-tert-butylacrylamide copolymer nanoparticles of 50 to 70 nm were prepared by free radical polymerisation. The particle sizes of the copolymer nanoparticles were measured in the test media MilliQ water, Algae Media, Daphnia Media and Microtox Diluent as a function of temperature. Whereas in MilliQ water the particle size was seen to decrease above the lower critical solution temperature of the thermoresponsive polymer, in the test media it was seen to increase significantly, indicative of aggregation. At the temperatures employed for the ecotoxicological studies all particles, with the exception of the 50:50copolymer existed as nanoparticles, however. …

A Test Battery Approach To The Ecotoxicological Evaluation Of Cadmium And Copper Employing A Battery Of Marine Bioassays, Ailbhe Macken, Michelle Giltrap, Kim Ryall, Barry Foley, Evin Mcgovern, Brendan Mchugh, Maria Davoren

Articles

The main aim of this study was to investigate the sensitivity of the battery to two recognised metal pollutants of the marine environment and rank species sensitivity accordingly.

Integrating Learning Technologies With Experiential Learning In A Postgraduate Teacher Education Course, Roisin Donnelly

Journal Articles

This paper discusses how a Postgraduate Certificate Course in Third Level Learning and Teaching for academic staff in the Republic of Ireland has adopted a particular approach in teacher education. As an important aspect of the successful integration and use of learning technology is the way in which it effectively reflects and articulates a given learning model, this course has its theoretical basis on the Kolb Experiential Learning Cycle (Kolb, 1983). The work illustrates that no one technology can support all types of third level learning and teaching; an effective approach is to combine a range of technologies. The self-study …

Beg, Steal Or Borrow?: The Challenges Faced By Borrowing The Failure Mode And Effects Analysis Method To Elicit The Unintended Consequences Of Implementing Elearning In The Higher Education Context, Frances Boylan

Papers, presentations and other resources

Effective project management, change management and risk management are key to the successful implementation of elearning. Connected to risk is the notion of unintended consequences, and it is with the issues and concerns surrounding the borrowing of the Failure Mode and Effects Analysis method for a research study to elicit the unintended consequences of the processes and policies put in place at one higher education institute in Ireland to facilitate the roll out of elearning there, that this paper is concerned. The Law of Unintended Consequences holds that any action undertaken can result in desirable and undesirable, as well as …

Latter-Day Saint Children And Youth In America, David C. Dollahite

Faculty Publications

Some of the concepts of the view of the childhood held by the Latter-day Saints can be found in stories told about the early life of their founder and first prophet, Joseph Smith. Brother Joseph, as he was known to the Saints, often took time to play games with children and youth. Some Mormons, with their early American sense of propriety about religious leaders, were troubled by Joseph's playful nature. One day a Brother Wakefield came to the Prophet's home to discuss church business. He was told that Brother Joseph was translating the word of God. Brother Wakefield waited some …

Inactivation Of Escherichia Coli In Orange Juice Using Ozone, Sonal Patil, Paula Bourke, Jesus Maria Frias, Brijesh Tiwari, Patrick J. Cullen

Articles

This research investigated the efficacy of gaseous ozone for the inactivation of Escherichia coli ATCC 25922 and NCTC 12900 strains in orange juice. Orange juice inoculated with E. coli (10⁶ CFU mL^-1) as a challenge microorganism was treated with ozone at 75-78µg mL^-1 for different time periods (0-18 min). The efficacy of ozone for inactivation of both strains of E. coli was evaluated as a function of different juice types: model orange juice, fresh unfiltered juice, juice without pulp, and juice filtered through 500mm or 1mm sieves. Fast inactivation rates for total reduction of E. coli …

Detection Of Numerous Verotoxigenic E. Coli Serotypes, With Multiple Antibiotic Resistance From Cattle Faeces And Soil, L. Scott, P. Mcgee, Ciara Walsh, Seamus Fanning, T. Sweeney, J. Blanco, M. Karczmarczyk, B. Earley, N. Leonard, J.J. Sheridan

Articles

Verotoxigenic E. coli (VTEC) belong to a diverse range of serotypes. Serotypes O157 and O26 are predominately identified in VTEC-associated disease in Europe, however due to difficulty in detection little is known about the epidemiology of non-O157 serotypes. This study reports the identification of 7 VTEC serotypes from cattle faeces and soil. Cattle faeces samples (n = 128) were taken from animals in 6 different farms, with soil samples (n = 20) obtained from 1 farm. After sample incubation in modified tryptone soy broth (mTSB) supplemented with streptomycin sulphate samples were plated onto sorbitol MacConkey (SMAC) also supplemented …

Reflections Of A Layman On The Ryan Report, Eamon Maher

Books/Chapters

The Ryan Report on abuse of children in institutions of the state which were run by religious orders caused outrage and confusion among all the people of Ireland, both members of the Catholic Church and others. In the aftermath of the immediate shock and the widespread media coverage, it seems useful to reflect on the roots of the problems that gave rise to these horrors and to try to set out a way forward which might help to avoid such things happening in the future. Tony Flannery set about seeking views, comments and analysis which might add some breadth and …

Shear Class: A Visual Ethnography Of The British Hair Salon: Part Of Portfolio Kurl Up N Dye, I Rae

School of Art, Design and Architecture

In his book The Ongoing Moment, the English writer Geoff Dyer (2005) draws out some of the common themes that have concerned photographers over the last century. His focus is the documentary tradition, primarily American, and within it he notes the homage that younger photographers pay to the history of image making that has gone before them. Barbershops are one example. Tracing a lineage from Walker Evans through Robert Frank to Michael Ormerod, with a short detour by way of Diane Arbus, he notes the ways in which the barbershop has been a recurring motif, how different people have photographed …

Silver Doped Perfluoropolyether-Urethane Coatings: Antibacterial Activity And Surface Analysis, Niall Stobie, Brendan Duffy, Steven Hinder, Patrick Mchale, Declan Mccormack

Articles

The colonisation of clinical and industrial surfaces with pathogenic microorganisms has prompted increased research into the development of effective antibacterial and antifouling coatings. There is evidence that implanted biomedical surfaces coated with metallic silver can be inactivated by hysiological fluids, thus reducing the bioactivity of the coating. In this work, we report the biofilm inhibition of Staphylococcus epidermidis using a roomtemperatureprocessedsilver dopedperfluoropolyether-urethane coating. The release of silver ions from these fluoropolymers over a six-day period inhibited bacterial encrustation – as observed by scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) analysis indicated differences in carbon, fluorine and sodium surface composition …

A Master's Recital In Percussion, Matthew M. Andreini

Dissertations and Theses @ UNI

This recital was given in partial fulfillment of a Master of Music degree in Percussion Performance at the University of Northern Iowa. The selections included in this program are works which are representative of both the historical and contemporary styles of percussion composition. The following abstract provides discussion in the historical background, compositional styles, systems of notation, and performance techniques used in each of the works from the program.

Identifying Communication Skills Necessary For Two-Year College Graduates To Succeed In The Changing And Competitive Workplace, Sarah R. Baker

Dissertations and Theses @ UNI

Today's job market is increasingly competitive and businesses require job candidates to not only have degree-program expertise, but possess other general workplace skills as well. This poses a unique challenge for community colleges because instructors have just two years or less to prepare students for the workforce. They need to ensure that all career related material is taught as well as other workplace skills such as oral and written communication. The purpose of this study was to identify workplace skills, specifically those related to communication, desired by companies that hire community college graduates and explore a possible need to expand …

Positions Of Power, Abjection And Constraint: Evaluating Discursive Attempts To Save An Other, Ruth Janet Beerman

Dissertations and Theses @ UNI

Beginning from the presumption that questions of agency are important, this thesis interrogates notions of who can speak, how to speak, and what constitutes agency. Feminist rhetorical theory operates as a key avenue to evaluate negotiating positions of power and privilege when examining how to liberate oppressed groups. By utilizing feminist conceptions of the body as well as theories of performance and personae, I examine how rhetorical theory contributes to such understandings where one speaks about an other. Finally, the war in Iraq serves as a case study to illustrate my theory.

A Comparison Of Teachers’ Attitudes Toward Sexual Minority Students And Issues In Schools With And Without Gay Straight Alliances, Kelli Ranae Otis Brus

Dissertations and Theses @ UNI

The purpose of this study was to investigate teachers' attitudes toward sexual minority students (including lesbian, gay, bisexual, transgender, and questioning students) and issues related to this population of students. A sample of 166 high school teachers from schools with and without gay-straight alliances (GSAs) were compared on several measures to determine if teachers from schools with GSAs were significantly more supportive toward sexual minority students and issues than teachers in schools without GSAs .. Participants completed research packets containing the Professional Attitude Index Scale (PAIS) (Sears, 1992), a hypothetical situation of homophobia in a classroom for participants to provide …

Pollution Swapping: The Effect Of Phosphorus Sequestration On Denitrification In Wetland Sediments, Nathaniel Femi Adegboyega

Dissertations and Theses @ UNI

Surface water quality is currently one of the most important environmental issues facing the state of Iowa since the ecological and recreational health of water bodies are threatened by non-point pollution. Most of Iowa's lakes are polluted because of their high concentration of nutrients, often phosphorus (P), which leads to excessive algal growth (eutrophication). To prevent eutrophication, it is necessary to prevent P from entering surface waters or to sequester (make unavailable to algae) the P that is already in the water body. One method to achieve this is to introduce substances that can tightly fix P (sorption).

Previous studies …