Digital Commons Network^™

Route Aware Predictive Congestion Control Protocol For Wireless Sensor Networks, Carl Larsen, Maciej Jan Zawodniok, Jagannathan Sarangapani

Electrical and Computer Engineering Faculty Research & Creative Works

Congestion in wireless sensor networks (WSN) may lead to packet losses or delayed delivery of important information rendering the WSN-based monitoring or control system useless. In this paper a routing-aware predictive congestion control (RPCC) yet decentralized scheme for WSN is presented that uses a combination of a hop by hop congestion control mechanism to maintain desired level of buffer occupancy, and a dynamic routing scheme that works in concert with the congestion control mechanism to forward the packets through less congested nodes. The proposed adaptive approach restricts the incoming traffic thus preventing buffer overflow while maintaining the rate through an …

The Role Of Spirituality In Women's Leadership At Community Colleges, Carol L. Hedberg

Dissertations and Theses @ UNI

This qualitative research study examined the role of women's leadership in Iowa community colleges. Administrative leaders from community college settings, recommended by their presidents, wrote narratives about effective leadership traits and from these narratives, four women leaders were selected and later interviewed. Key thematic categories were developed from the written and verbal narratives. The resulting data set was then analyzed by a comparative case study approach. Emerging thematic categories were interpreted through the lens of four primary research questions addressing the relationship between gender, spirituality, and authentic leadership.

A plethora of issues surfaced from the data. Issues of gender and …

Pieces To The Puzzle, Ann L. Cracco

Dissertations and Theses @ UNI

Because low-income, first-generation, and disabled individuals have limited access to postsecondary education, Congress established TRIO, a series of programs designed to provide access to college for this targeted population. One initiative suggested to aid in retention and graduation for these TRIO students was mentoring. This study examined the perceived benefits of faculty mentoring for first-generation TRIO students to facilitate retention and graduation rates at a Midwestern Community College. Three faculty members and three TRIO students were interviewed to determine their perception of the benefits of faculty mentoring. The results were consistent with the literature that students who have access to …

Approaches To Studying And Study Tactics Of Baccalaureate Nursing Students, Lisa D. Brodersen

Dissertations and Theses @ UNI

This research was designed to describe study approaches and study tactics used by baccalaureate nursing students. Previous inquiry indicates that students will take a Deep, Strategic, or Surface approach to studying and will use specific study tactics to meet the demands of their learning contexts.

The Approaches to Study Skills Inventory for Students (ASSIST) was administered to 174 students in Anatomy and Physiology, Pathophysiology, and Nursing Care of the Adult Client. Failing students were less likely to participate. The ASSIST bad acceptable internal consistency reliability and construct validity. A majority (55%) of students took a Strategic approach to studying; smaller …

Identifying Behavioral Characteristics Of High School Principals Providing Leadership In Reforming Iowa High Schools, Nadene E. Davidson

Dissertations and Theses @ UNI

Technological advances and the changing world have created new challenges in preparing our youth to lead satisfying lives in the twenty-first century. Current literature supports the case that change is needed in our high schools to move from the factory preparation model to become more personalized learning communities preparing students for life in a global community. This reinvented high school will require reinvented leadership to guide the process of high school reform. The purpose of this study was to identify behavioral characteristics of high school principals providing leadership in reforming Iowa high schools.

Interviews were conducted with educators from two …

Performance Analysis Of Wireless Systems With Doubly Selective Rayleigh Fading, Jingxian Wu, Chengshan Xiao

Electrical and Computer Engineering Faculty Research & Creative Works

Theoretical error performances of wireless communication systems suffering from both doubly selective (time varying and frequency selective) Rayleigh fading and sampler timing offset are analyzed in this paper. Single-input-single-output systems with doubly selective fading channels are equivalently represented as discrete-time single-input-multiple-output (SIMO) systems with correlated frequency-flat fading channels, with the correlation information being determined by the combined effects of sampler timing phase, maximum Doppler spread, and power delay profile of the physical fading. Based on the equivalent SIMO system representation, closed-form error-probability expressions are derived as tight lower bounds for linearly modulated systems with fractionally spaced equalizers. The information on …

Hydro-Nexrad Radar-Rainfall Estimation Algorithm Development, Testing And Evaluation, Witold F. Krajewski, Bong Chul Seo, Anton Kruger, Piotr Domaszczynski, Gabriele Villarini, Charles Gunyon

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Hydro-NEXRAD radar-rainfall estimation algorithms involve three main components: 1) preprocessing, 2) rain rate, and 3) rainfall accumulation. The preprocessing algorithm performs the quality control of reflectivity volume data and generates a hybrid scan. That is, reflectivity values for each azimuth and range bin are assigned from the several lowest elevation angles. It optionally estimates an azimuth-dependent vertical reflectivity profile and performs a correction for range effects. The rain rate algorithm converts the corrected reflectivity to rainfall intensity. The user can specify any power-law type empirical relationship between reflectivity and rainfall intensity. The last step of rainfall estimation is to …

Towards Better Utilization Of Nexrad Data In Hydrology: An Overview Of Hydro-Nexrad, Witold F. Krajewski, Anton Kruger, Ramon Lawrence, James A. Smith, A. Allen Bradley, Matthias Steiner, Mary Lynn Baeck, Mohan K. Ramamurthy, Jeffrey Weber, Stephen A. Delgreco, Bong Chul Seo, Piotr Domaszczynski, Charles Gunyon, Radoslaw Goska

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

With a very modest investment in computer hardware and the open-source local data manger (LDM) software from UCAR's Unidata Program Center, an individual researcher can receive a variety of NEXRAD Level III gridded rainfall products, and the unprocessed Level II data in real-time from most NEXRAD radars. Additionally, the National Climatic Data Center has vast archives of these products and Level II data. Still, significant obstacles remain in order to unlock the full potential of the data. One set of obstacles is related to effective management of multi-terabyte data sets: storing, compressing, and backing up. A second set of obstacles, …

Mediating The Cultivation Of Fear Through Media Literacy Education, Catherine N. Collins, Kristine L. Slank

Modern Psychological Studies

College students (N = 110) received a media literacy intervention based on critical thinking or they received no intervention. Students were also classified as low or high television viewers based on responses to a Television Use Survey. Fear was measured with a Safety Survey and analyzed with a 2 Intervention x 2 Television Viewing ANOVA. Fear was expected to be lower in the intervention and low television viewing groups than in the no intervention and high television viewing groups. However, no results were significant.

Play Behaviors On Outdoor Play Structures, Angela Dawn Rodriquez

Graduate Research Papers

The purpose of this study was to assess children's free play preferences on outdoor play structures. Many contemporary children are not merely deprived of play but are essentially deprived of the healthiest and richest forms of play. The richest forms are described by children as the most fun, the most exciting, the most interesting, and by theorists and writers are described as "deep play". Deep play is defined as nonliteral behavior, and a transformation of reality Mannell, & Klieber, 1997. This study focused on children's social, cognitive and non-play behaviors that they participated in on play structures.

These deep play …

Laboratory Schools Annual Report, 2006-2007, Laboratory Schools, Illinois State University

Annual Reports – Laboratory Schools

Illinois State University Laboratory Schools annual report

An Experimental Analysis Of Activist Message Strategy Effect On Receiver Variables, Andrea Schuch

USF Tampa Graduate Theses and Dissertations

Utilizing communication and activist organization perspectives, this empirical study examined activist message strategies and how they influence variables related to the receiver of activist communication. Specifically, J.E. Grunig's (1997) situational theory of publics and Fishbein and Ajzen's (1975) theory of reasoned action were used to explain the communication effects of the seven activist message strategies developed from Hazleton and Long's (1988) public relations process model. The findings of this study support the premise of situational theory of publics and contribute to the extension of the theory through the inclusion of goal compatibility as a predictor of information seeking behavior and …

Cellular Electrofusion Utilizing Corona Fields And Dc Pulse Technology, Joshua Stein

USF Tampa Graduate Theses and Dissertations

Cell fusion is an important technique that is used in the field of medicine and biomedical research. For instance, fusion can be used to create hybridomas and novel types of secretory hybrid cells. It may also be used to engineer cultured insulin-secreting pancreatic B-cell lines for the treatment of diabetes. Historically, the applications listed above have been accomplished by a number of methodologies including dielectrophoresis, centrifugation, polyethylene glycol (PEG) and viral fusion proteins. However, these approaches often fail to produce the desired results due to poor cell viability, lack of 1:1 fusion, and use of non-physiological environments. It is proposed …

Life As A Student At An Independent Day School, Diana R. Torres

USF Tampa Graduate Theses and Dissertations

This study explores the interconnectedness of social class, education, and cultural capital. Considered academically elite, the independent school is be an ideal environment to find increased instances and opportunities for the acquisition and reproduction of elite, or "dominant" cultural capital. By implementing an ethnographic approach within an independent school setting, this study attempts to illuminate the student experience through adolescents' eyes. Past cultural capital studies focus on the relationship between cultural capital and academic achievement and/or social reproduction; instead, this study focuses on the everyday student experiences as they point to potential indicators of cultural capital. Results suggest that students' …

Technology And Older Faculty: A Descriptive Study Of Older Florida Community College Faculty, Christopher D. Van Der Kaay

USF Tampa Graduate Theses and Dissertations

Institutions of higher learning across the United States are experiencing an aging faculty population. A significant proportion of college and university faculty are over 55, a growth expected to continue in future years. Parallel to this growth and change has been an expanding use of technology in higher education. Despite this trend and potential implications, few studies have provided in-depth insight into older faculty and technology. The study used a quantitative descriptive design to provide a comprehensive look at older community college faculty and various aspects of technology. Areas examined included older faculty's perceptions of technology, their attitudes toward institutional …

What The Spirit Knows: Charles Williams And Kenneth Burke, Grace Veach

USF Tampa Graduate Theses and Dissertations

What the Spirit Knows: Charles Williams and Kenneth Burke examines the Arthurian poetry of Charles Williams using a methodology derived from Kenneth Burke. This is an experiment in literary criticism of a Christian poet using a methodology that is not specifically Christian. Key critical ideas found in Burke are utilized in reading poems from Taliessin Through Logres and Region of the Summer Stars. Burke's work on form and symbol (primarily from Counter-Statement) is addressed first. Form in an individual poem (using "Taliessin's Song of the Unicorn) and in an entire cycle is examined. Burke lists several uses for symbol in …

Online Delivery Of Career Choice Interventions: Preferences Of First-Year Students In Higher Education, Melissa Venable

USF Tampa Graduate Theses and Dissertations

Career services professionals are increasingly involved in decisions regarding the use of technology to perform their jobs. The millennial generation, increasingly enrolling in distance education, is characterized as being comfortable with technology, expecting efficient services, and valuing convenience. Understanding the technology-related preferences of today's students is fundamental for those planning and developing student career services. Brown and Ryan Krane (2000) identified five critical interventions important to career decision-making: (a) Written Exercises, (b) Individualized Interpretations and Feedback, (c) Information on the World of Work, (d) Modeling, and (e) Attention to Building Support.

This study investigated the following questions: (1) what are …

Effect Of A Preoperative Warming Intervention On The Acute Phase Response Of Surgical Stress, Vanda Doreen Wagner

USF Tampa Graduate Theses and Dissertations

When a patient is exposed surgical stress, the endocrine system secretes hormones in response to that stress. These hormones further activate the immune system to release cytokines and other acute phase reactions. These processes are supposed to protect the body by upregulating the innate immune system and producing an inflammatory response that acts to protect and heal. However, uncontrolled surgical stress may cause a weaker immune response that may lead to delayed wound healing. The phenomenon of unplanned perioperative hypothermia is known to expose patients to additional surgical stress. The purpose of this preliminary experimental study was to determine the …

Narratives Of Lesbian Transformation: Coming-Out Stories Of Women Who Transition From Heterosexual Marriage To Lesbian Identity, Clare F. Walsh

USF Tampa Graduate Theses and Dissertations

Women who have transitioned to a lesbian identity from a previously heterosexual one lack a voice in the academic literature. Identity formation in this subset of women, those who chose a heterosexual marriage, had children, and later in life self identify as lesbian, has not been fully investigated. For this project, eight women were asked to answer this question: How have you negotiated the path from heterosexuality to lesbianism? Four main themes were found dealing with heteronormativity and accountability, relationship with children, transition, and acceptance by the lesbian community. Additionally, I introduce a new term---gender-normativity---to describe these women who only …

Effect Of Personal And Practice Contexts On Occupational Therapists' Assessment Practices In Geriatric Rehabilitation, Mirtha Montejo Whaley

USF Tampa Graduate Theses and Dissertations

Despite considerable debate surrounding an age associated cognitive decline in non-demented elders, recent studies indicate that changes attributable to normal aging affect cognitive processes and fluid abilities. Additionally, studies indicate that factors such as physical illness, depression, neurological damage, medication side effects, drug interactions, and the effects of surgery and anesthesia may also cause varying degrees of cognitive impairment. Impairment of cognitive function is known to affect treatment and rehabilitation outcomes for older persons, and increase their likelihood of institutionalization. Although proper screening and identification of cognitive deficits in geriatric patients are crucial in developing treatment plans, there is evidence …

The Influence Of Masculinity Ideology On High-Risk Sexual Behavior Among Men Who Have Sex With Men, Christopher Wheldon

USF Tampa Graduate Theses and Dissertations

Epidemiologic evidence shows that the incidence of HIV among men who have sex with men (MSM) is on the rise. high-risk sexual behaviors are the primary mode of transmission and are responsible for increased rates of infection. a growing body of evidence suggests that endorsement of normative beliefs and values regarding manhood and masculinity, or masculinity ideology, may help to explain certain high-risk sexual behaviors. this study investigated the associations between a measure of masculinity ideology and sexual risk taking among a sample of MSM. in addition, indirect pathways in which masculinity ideology may lead to sexual risk taking were …

Evaluating The Effects Of A Reinforcement System For Students Participating In The Fast Forword Language Program, Catherine C. Wilcox

USF Tampa Graduate Theses and Dissertations

A computer-assisted language intervention program called Fast ForWord(R) (Scientific Learning Corporation, 1998) has received a great deal of attention over the past few years. The Scientific Learning Corporation claims that the use of Fast ForWord will improve students' language, reading and learning skills, leading to improved communication skills and increased self-esteem in and out of the classroom. Researchers have explored the effects of Fast ForWord training on reading and spoken language. However, little research has examined the effects on student's reading level and FFW scores when a reinforcement system is used in conjunction with FFW. This study was conducted in …

Secondary World History Teachers’ Integration Of Technology Into The Classroom: A Mixed-Method Approach, Shelli A. Whitworth

USF Tampa Graduate Theses and Dissertations

In the social studies classroom, using technology, students may gain access to expansive knowledge, broaden their exposure to diverse people and perspectives, and engage in critical thinking activities necessary for citizenship education (Berson, 1996; Berson & Balyta, 2004; Berson & Berson, 2003; Bolick, McGlinn, & Siko, 2005; NCSS, 1994, 2006; Risinger, 1996; Whitworth & Berson, 2003). 21st Century Skills are valuable for students as they examine vast amounts of content relating to historical events, figures, societies, technological growth and examine the relationship of the content to today's global interactions. Research indicates that there remains a call for documentation of exemplary …

Graduate Students/Mothers Negotiating Academia And Family Life: Discourses, Experiences, And Alternatives, Shirlan A. Williams

USF Tampa Graduate Theses and Dissertations

This study examines the experiences and perceptions of graduate students who are mothers. Based on discourse analysis, one-on-one interviews, and focus groups, this study argues that institutional discourses and practices place graduate students who are mothers in untenable and irreconcilable positions between "mom" and "student," between "family" and "the academy," between "self" and "success." These irreconcilable differences are created in discourse, enacted in institutional policies, and lived by the participants. The study offers action-based alternatives to the status quo policies of the university based on the self-described needs of these women. It reveals that support from all fronts--the home, the …

Why Has Violence Come To Dominate Images Of Png Elections? The 2002 Elections In The Highlands Region, Krisztina Matefy

Theses : Honours

This thesis examines the problem of election-related violence through a number of meta-theories, which have recently emerged in the social sciences to explain intrastate conflicts. By using the case study of the 2002 elections in the Highlands region of Papua New Guinea (PNG), this thesis examines the applicability and usefulness of primordialism, modernization theory and weak state theory in explaining election-related violence in PNG. Critically examining the theories, the thesis analyses a wide range of information about the historical, cultural, social and political factors that played a significant role in the surfacing of election-related violence in the PNG Highlands. By …

Contextual Effects On A Well Learned Task: Isolated Or Broad?, Matthew J. Parkinson

Theses : Honours

Skill transfer is a fundamental feature in the domain of skill acquisition, however different theories present conflicting ideas regarding prediction of transfer. Anderson's (1982) Adaptive Control of Thought theory posits that the amount of transfer is proportional to the number of shared productions. Logan's (1988) Instance theory in contrast, posits that complete transfer will only occur on tasks which have been experienced before. However, work by Speelman and Kirsner (1997), Speelman, Forbes and Giesen (2004) and Johnson (2005) have produced results that counter the implicit assumptions of these theories. More specifically a disruption from the predicted learning curve was found …

Notions Of Truth In Contemporary Narrative : Where The Truth Lies, Cherie Smilovitis

Theses : Honours

Creative nonfiction narratives have in recent times become increasingly popular. This thesis sets out to examine what is at the heart of the unique reading experience that creative nonfiction narratives offer readers. It begins with an analysis of various definitions of both creative nonfiction and fiction in order to establish the way, or ways in which they are held to differ or be distinguishable from one another. Though various definitions assert that there are distinct differences between fiction and creative nonfiction narratives, several make mention of occasions where the boundaries between the two may become indistinct. On such occasions, as …

An Other(Ed) Handmaid's Tale : Child Care Workers: Seen But Not Heard, Kathrine Alice Sarah Whitty

Theses : Honours

Child care workers seem to have been forever assigned the lowest rung on the career ladder. Their low status has been attributed to several intractable factors: the socially devalued 'caring' nature of the role; the relatively small, disparate and non-hierarchically structured workplace; intimate association with an increasingly more marginalized group - children in their early childhoods; and an assumed complicity with a pseudo-surrogacy role of mother rendering them transgressors within a pro-natalist landscape. The institution of exclusive maternal care, for children prior to school, holds fast against the inexorable call for women to paid work. This dilemma resonates strongly within …

Using Machine Learning Techniques To Create Ai Controlled Players For Video Games, Bhuman Soni

Theses : Honours

This study aims to achieve higher replay and entertainment value in a game through human-like AI behaviour in computer controlled characters called bats. In order to achieve that, an artificial intelligence system capable of learning from observation of human player play was developed. The artificial intelligence system makes use of machine learning capabilities to control the state change mechanism of the bot. The implemented system was tested by an audience of gamers and compared against bats controlled by static scripts. The data collected was focused on qualitative aspects of replay and entertainment value of the game and subjected to quantitative …

Blowing East : A Set Of Performance Practice Instructions For A Western Flautist Presenting Japanese And Indian Inspired Works, Asha Henfry

Theses : Honours

In the form of a handbook, this dissertation is predominantly directed at Western flute players interested in world music, the shaktthachi or bansttri, or who may be looking for advice on playing Japanese or Indian inspired works. Performing music that is not in the normal Western classical idiom can sometimes be a daunting experience for a flautist. By looking first at the background musical and cultural aspects relative to each country and then delving deeper into the finer details of characteristic nuances and techniques, the flautist can then take the music to a higher level. In addition, an extensive list …