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2007

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Numerical Simulation Of Steady State And Transient Heat Transfer In Microchannels, Phaninder Injeti Jan 2007

Numerical Simulation Of Steady State And Transient Heat Transfer In Microchannels, Phaninder Injeti

USF Tampa Graduate Theses and Dissertations

In this project we studied the effect of different parameters on heat transfer in two-dimensional microchannels, microtubes and also tube-in-block heat exchangers for various engineering applications. These included the use of flow restrictions to enhance local heat or mass transfer rate, enhancement of conjugate heat transfer with discrete heating and magnetic coolers (or heaters) associated with magnetic refrigeration system. The results of this research will help in designing the heating or cooling systems and selection of their appropriate geometrical dimensions and materials for specific applications. Types of problems studied in this project are: steady state analysis of forced convection around …

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The Development Of Leadership Skills Through Diversity Of Student Organizational Leadership, Daniel M. Jenkins Jan 2007

The Development Of Leadership Skills Through Diversity Of Student Organizational Leadership, Daniel M. Jenkins

USF Tampa Graduate Theses and Dissertations

The steady increase of racial and ethnic diversity in public universities has provided student leaders with many challenges. However, little is known about the effects of racial and ethnic diversity on the development of these student leaders. This study aims to evaluate the effects of racial and ethnic diversity in college student organizations on the development of student leaders and the perceived value of such diversity on their development. The sample consists of 833 student leaders from Florida's ten public universities who completed online surveys. The questions asked were designed to evaluate their past and present leadership roles and skills, …

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The Relationship Between Technology Integration And Achievement Using Multi-Level Modeling, Tina N. Hohlfeld Jan 2007

The Relationship Between Technology Integration And Achievement Using Multi-Level Modeling, Tina N. Hohlfeld

USF Tampa Graduate Theses and Dissertations

The purpose of this longitudinal study was to examine the relationship between technology integration indicators and school level achievement. Four years of school level secondary data from publicly available databases maintained by the Florida Department of Education were combined for all public elementary, middle, and high schools in the state. This study examined approximately 2300 schools that participated each year in the Florida Innovates Survey about technology integration between 2003-04 and 2006-07. Complexity theory supported the use of multi-level modeling to examine the relationships between technology integration and outcomes. Three achievement outcomes (reading, mathematics, and writing) and two mediating behavioral …

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Service With A Smile: Antecedents And Consequences Of Emotional Labor Strategies, Hazel-Ann Michelle Johnson Jan 2007

Service With A Smile: Antecedents And Consequences Of Emotional Labor Strategies, Hazel-Ann Michelle Johnson

USF Tampa Graduate Theses and Dissertations

Organizations across the United States and in many parts of the globe are increasingly focused on providing their customers with an excellent service experience by implementing organizational emotion display rules (Hochschild, 1983). These display rules dictate the requisite employee emotions for a particular encounter (Ekman, 1973). However, over the course of a work day display rules may call for expressions that contradict an employee's genuine emotions, thus prompting a discrepancy between felt emotions and required emotions -- emotional dissonance (Hochschild, 1983). Emotional labor involves employee efforts to reduce emotional dissonance in order to adhere to organizational display rules (Hochschild, 1983; …

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The Principal’S Role In Building Teacher Leadership Capacity In High-Performing Elementary Schools: A Qualitative Case Study, Rahim Jamal Jones Jan 2007

The Principal’S Role In Building Teacher Leadership Capacity In High-Performing Elementary Schools: A Qualitative Case Study, Rahim Jamal Jones

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to explore how public elementary school principals develop teacher leadership capacity within their schools, as well as the effect of this effort on a school's performance. After examining a variety of sources, such as journal articles and web-based search engines, the researcher determined that there was scant information explaining the process principals undergo to create teacher leadership roles in an effort to develop a high-performing school. To accomplish the goals of this study, salient reports in the field of teacher leadership were reviewed. The insights afforded from these reports guided the researcher in developing …

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Computer-Mediated Peer Response In A Level-Iv Esl Academic Writing Class: A Cultural Historical Activity Theoretical Perspective, Li Jin Jan 2007

Computer-Mediated Peer Response In A Level-Iv Esl Academic Writing Class: A Cultural Historical Activity Theoretical Perspective, Li Jin

USF Tampa Graduate Theses and Dissertations

Very few studies focus on how English as a second language (ESL) students' agency and their unique histories as an integral part of the social cultural environment influence his or her participation in computer-mediated peer response tasks, particularly in a multimedia-based synchronous communication environment. Considering each ESL student as an active agency with unique historical bearings, the dissertation investigated ESL students' participation in computer-mediated peer response (CMPR) tasks that used instant messenger (IM) as the communication technology between students from the cultural historical activity theoretical (CHAT) perspective, which views all human interaction as a dynamic developmental process. A case study …

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My Lord Lackbeard: Enfranchisement And Expressions Of Beardlessness In Shakespeare’S Canon From 1594 To 1601, C R. Junkins Jan 2007

My Lord Lackbeard: Enfranchisement And Expressions Of Beardlessness In Shakespeare’S Canon From 1594 To 1601, C R. Junkins

USF Tampa Graduate Theses and Dissertations

William Shakespeare employs a series of male characters specifically described as beardless in those plays performed from 1594 to 1601. Will Fisher argues that such characters reveal early modern conceptions of masculinity; the beard was used in conjunction with other forms of material such as dress and weaponry to construct gender. Mark Albert Johnston notes that beards performed as currencies of exchange, denoting not just masculinity but economic power as well. Rather than signifying a lack or deficiency, the hairless chin is an active participant in a deeply complex tangle of competing political, economic and religious ideologies. Shakespeare's commentary on …

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Public Relations Practices In Puerto Rico: An Exploratory Qualitative Study, Delia R. Jourde Jan 2007

Public Relations Practices In Puerto Rico: An Exploratory Qualitative Study, Delia R. Jourde

USF Tampa Graduate Theses and Dissertations

This explorative study is a qualitative assessment of culture as a critical aspect of public relations practice in Puerto Rico. Reviewing definitions of culture, Hofstede's dimensions of cultural values, the Excellence Theory, and international case studies, this study sought to answer the following research questions: What national cultural traits have an impact on the practice of public relations in Puerto Rico? Do Puerto Rican practitioners feel their own cultural characteristics have an impact on their practice of public relations? Does the cultural diversity of Puerto Rico have an impact on public relations practice in that country? Does the country's strong …

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Optimization Of Anti-Abeta Antibody Therapy, Rachel Anne Karlnoski Jan 2007

Optimization Of Anti-Abeta Antibody Therapy, Rachel Anne Karlnoski

USF Tampa Graduate Theses and Dissertations

Alzheimer's disease (AD) is the most common form of dementia, a disease that gradually destroys brain cells and leads to progressive decline in mental function. The presence of high densities of neuritic plaques composed of Abeta in the cerebral cortices is a criterion for the post-mortem diagnosis of AD. The view that Abeta deposition drives the pathogenesis of AD (amyloid hypothesis) has received support from a wide range of molecular, genetic, and animal studies. This hypothesis has been the focus of therapeutic intervention leading to the development of anti-Abeta immunotherapy as a potential treatment. There is a great deal of …

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Natural And Anthropogenic Influences On Flow Patterns And Sediment Characteristics In The Dona And Roberts Bay Estuarine System, Sarasota County, Florida, Kyle W. Kelso Jan 2007

Natural And Anthropogenic Influences On Flow Patterns And Sediment Characteristics In The Dona And Roberts Bay Estuarine System, Sarasota County, Florida, Kyle W. Kelso

USF Tampa Graduate Theses and Dissertations

The Dona and Roberts Bay watershed comprises one of the five major watersheds in Sarasota County, Florida. It is connected to the Gulf of Mexico via Venice Inlet. Like many estuaries in the Florida, significant modifications have been made to the drainage basins, principally to the main tributaries. The system has undergone several anthropogenic modifications to enhance water management efforts. Creeks that comprise fresh water input into the system have been dammed in order to inhibit the upstream flow of salt water during the dry season. They are also deepened or lengthened to allow for better drainage. In addition, biogenic …

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Technology In Low Socio-Economic K-12 Schools: Examining Student Access And Implementation, Katherine J. Kemker Jan 2007

Technology In Low Socio-Economic K-12 Schools: Examining Student Access And Implementation, Katherine J. Kemker

USF Tampa Graduate Theses and Dissertations

Over the past twenty years, there has been an enormous financial investment in technology for K-12 schools to help bridge the digital divide between high and low socioeconomic (SES) students. These investments have included hardware, software, professional development, and research studies on the effectiveness of technology in the classroom. This dissertation explored the essential conditions for the integration of technology, access, student-centered learning environment, and teacher use in the curriculum. Florida's elementary schools were divided into quartiles based on free and reduced lunch to investigate differences between the top quartile of high SES schools (n=400) and the lower quartile of …

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Source Credibility And Public Information Campaigns: The Effect Of Audience Evaluations Of Organizational Sponsors On Message Acceptance, Deena G. Kemp Jan 2007

Source Credibility And Public Information Campaigns: The Effect Of Audience Evaluations Of Organizational Sponsors On Message Acceptance, Deena G. Kemp

USF Tampa Graduate Theses and Dissertations

This study establishes a link between research on organizational source credibility and the effects of public information campaigns. Research has established that source credibility is one factor audiences evaluate when responding to messages and that credible information sources enhance message acceptance, while untrustworthy sources can interfere with desired message effects. Although source credibility studies have typically focused on the person delivering a message, recent studies indicate that audience perceptions of the organization sponsoring a message has a direct effect on message acceptance as well. Additionally, a few studies indicate that non-profit sources of health information are viewed as more credible, …

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Crystallization Studies Of Epigallocatechin Gallate, Sheshanka Kesani Jan 2007

Crystallization Studies Of Epigallocatechin Gallate, Sheshanka Kesani

USF Tampa Graduate Theses and Dissertations

Flavonoids are a long and well known class of natural products. Their potential health benefits can be attributed to their antioxidant activity, and modulation of cell signaling pathways. Green tea one of the most widely consumed beverages, consist of flavonoids such as catechins and tannins. Epigallocatechin gallate (EGCG) the major catechin of green tea exhibits multiple health benefits due to its antioxidant nature. The radical scavenging activity of EGCG is attributed to its structure. Therefore, a study on molecular features of EGCG would provide valuable information on structural modifications, which may change the physiochemical properties such as bioavailability and solubility. …

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Nonlinear Dependence And Extremes In Hydrology And Climate, Shiraj Khan Jan 2007

Nonlinear Dependence And Extremes In Hydrology And Climate, Shiraj Khan

USF Tampa Graduate Theses and Dissertations

The presence of nonlinear dependence and chaos has strong implications for predictive modeling and the analysis of dominant processes in hydrology and climate. Analysis of extremes may aid in developing predictive models in hydro-climatology by giving enhanced understanding of processes driving the extremes and perhaps delineate possible anthropogenic or natural causes. This dissertation develops and utilizes different set of tools for predictive modeling, specifically nonlinear dependence, extreme, and chaos, and tests the viability of these tools on the real data. Commonly used dependence measures, such as linear correlation, cross-correlogram or Kendall's tau, cannot capture the complete dependence structure in data …

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Rkem Implementation For Strain Gradient Theory In Multiple Dimensions, Abhishek Kumar Jan 2007

Rkem Implementation For Strain Gradient Theory In Multiple Dimensions, Abhishek Kumar

USF Tampa Graduate Theses and Dissertations

The Reproducing Kernel Element Method (RKEM) implementation of the Fleck-Hutchinson phenomenological strain gradient theory in 1D, 2D and 3D is implemented in this research. Fleck-Hutchinson theory fits within the framework of Touplin- Mindlin theories and deals with first order strain gradients and associated work conjugate higher-order stress. Theories at the intrinsic or material length scales find applications in size dependent phenomena. In elasticity, length scale enters the constitutive equation through the elastic strain energy function which depends on both strain as well as the gradient of rotation and stress. The displacement formulation of the Touplin Mindlin theory involve diffrential equations …

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Sol-Gel Immobilized Cyano-Polydimethylsiloxane And Short Chain Polyethylene Glycol Coatings For Capillary Microextraction Coupled To Gas Chromatography, Sameer M. Kulkarni Jan 2007

Sol-Gel Immobilized Cyano-Polydimethylsiloxane And Short Chain Polyethylene Glycol Coatings For Capillary Microextraction Coupled To Gas Chromatography, Sameer M. Kulkarni

USF Tampa Graduate Theses and Dissertations

Two highly polar sol-gel coatings were developed for capillary microextraction (CME). One of the coatings contained cyanopropyl-polydimethylsiloxane (CN-PDMS) and the other low molecular weight polyethylene glycol. These highly polar coatings were immobilized via sol-gel chemistry allowing for direct chemical bonding to the inner surface of fused silica capillaries. These sol-gel coated microextraction capillaries were employed in CME for solvent-free microextraction and preconcentration of trace analytes (polar, moderately polar, and nonpolar) from aqueous matrices. CN-PDMS and short chain PEG extraction phases exhibit both polar and polarizable characteristics. Therefore, both sol-gel CN-PDMS and short chain sol-gel PEG coatings were able to extract …

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Literatura, Lenguaje Y “Realidad”: La Relación Entre La Literatura Y Sus Referentes Socio Históricos Según Rayuela Y Tres Tristes Tigres, Erin N. Laureano Jan 2007

Literatura, Lenguaje Y “Realidad”: La Relación Entre La Literatura Y Sus Referentes Socio Históricos Según Rayuela Y Tres Tristes Tigres, Erin N. Laureano

USF Tampa Graduate Theses and Dissertations

The purpose of the present study is to examine the theme of literature in Rayuela (Julio Cortázar, 1963) and Tres tristes tigres (Guillermo Cabrera Infante, 1967), taking into account the importance of this theme within the socio-historical and intellectual context of 1960's Latin America, an era characterized not only by the triumph of the Cuban Revolution in the political field, but also the height of poststructuralist literary theory, which arrives in Latin America via Europe. As we will see, the convergence of these two historical and literary moments implies the co-existence in Latin America of a call for a politicized …

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Regulation Of Mdmx Nuclear Import And Degradation By Chk2 And 14-3-3, Cynthia Lebron Jan 2007

Regulation Of Mdmx Nuclear Import And Degradation By Chk2 And 14-3-3, Cynthia Lebron

USF Tampa Graduate Theses and Dissertations

The MDM2 homolog MDMX is an important regulator of p53 during mouse embryonic development. DNA damage promotes MDMX phosphorylation, nuclear translocation, and degradation by MDM2. Here we show that MDMX copurifies with 14-3-3, and DNA damage stimulates MDMX binding to 14-3-3. Chk2-mediated phosphorylation of MDMX on S367 is important for stimulating 14-3-3 binding, MDMX nuclear import by a cryptic NLS, and degradation by MDM2. Mutation of MDMX S367 inhibits ubiquitination and degradation by MDM2, and prevents MDMX nuclear import. Expression of 14-3-3 stimulates the degradation of phosphorylated MDMX. Chk2 and 14-3-3 cooperatively stimulate MDMX ubiquitination and overcome the inhibition of …

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The Turn Of The Screw’S Debated Phantasms: The Role Of The Fantastic In The Creation Of Peter Quint And Miss Jessel, Susan Savage Lee Jan 2007

The Turn Of The Screw’S Debated Phantasms: The Role Of The Fantastic In The Creation Of Peter Quint And Miss Jessel, Susan Savage Lee

USF Tampa Graduate Theses and Dissertations

When Henry James sat down to write his "amusette" as he called The Turn of the Screw (1898), he created various ambiguities in the text as a means of confusing and surprising his readers or, in other words, catching them off guard. Over a century later, the mysterious ambiance surrounding the novella has not become any clearer. While critics from Edmund Wilson to Edna Kenton have analyzed the work from a somewhat psychoanalytical perspective, stating that the ghosts of Miss Jessel and Peter Quint are merely figments of the governess's imagination, Tzvetan Todorov and Rosemary Jackson examine James's work through …

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The Chivalric Gawain, Carleigh Leffert Jan 2007

The Chivalric Gawain, Carleigh Leffert

USF Tampa Graduate Theses and Dissertations

The principal objective of this paper is to analyze Sir Gawain's efforts to balance the conflicting requirements of the Code of Chivalry with the basic needs of human nature to develop insights into the Gawain's character. Using an amalgamated definition of chivalry as the standard, I will examine Gawain's attempts to achieve his goal of being the perfect chivalric knight, determine the nature of his obstacles, and analyze the development of his character. In trying to live up to perfection, Gawain discovers that he is not perfect.

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Protégé And Mentor Characteristics: Examining Individual Differences In Effective Mentoring Relationships, Elizabeth Lentz Jan 2007

Protégé And Mentor Characteristics: Examining Individual Differences In Effective Mentoring Relationships, Elizabeth Lentz

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to identify and examine the role of dispositional characteristics in effective mentoring relationships. A learning and development framework was incorporated to examine the relationships of protégé and mentor characteristics, mentoring provided, and developmental mentoring outcomes. First, relationships between individual characteristics and mentoring provided were examined. Second, relationships between individual characteristics and partner developmental outcomes were examined. Third, mentoring provided was examined as a mediator of individual characteristics and partner developmental outcomes. The final sample consisted of 93 protégé-mentor pairs. Protégés and mentors were asked to complete an online survey measuring learning goal orientation, locus …

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Testing Impulsivity As A Moderator Of Smoking Motivation Following Exposure To Negative Affect And Smoking Cues, Erika B. Litvin Jan 2007

Testing Impulsivity As A Moderator Of Smoking Motivation Following Exposure To Negative Affect And Smoking Cues, Erika B. Litvin

USF Tampa Graduate Theses and Dissertations

Consistent with classical conditioning theories of drug use, previous research has demonstrated that presenting smokers with either exteroceptive (e.g., pictures of cigarettes) or interoceptive (e.g., negative affect) cues results in increased motivation to smoke, as measured by urge and smoking topography (e.g., shorter latency to begin smoking). However, few studies have presented both types of cues to determine whether and how they might interact in the production of smoking motivation, and little research has focused on identifying potential moderators of cue reactivity. In a randomized 2 x 2 crossed factorial between-subjects design, the current study tested whether an interoceptive cue …

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An Analysis Of Origen’S Charismatic Ideology In His Commentary On The Gospel Of John, Kimberly W. Logan-Hudson Jan 2007

An Analysis Of Origen’S Charismatic Ideology In His Commentary On The Gospel Of John, Kimberly W. Logan-Hudson

USF Tampa Graduate Theses and Dissertations

This thesis aims to examine whether Origen projects a charismatic ideology within his Commentary on the Gospel of John. Five characteristics will be utilized during the process: (1) Charismatic authority is given directly from God and only God; (2) Those who have been chosen sought and maintain the position; (3) Individuals must recognize this authority along with others; (4) Those with charismatic authority must mediate God's word for others; (5) This authority may only belong to individuals within the one body of the church. In analyzing Books 1, 2, 6, and 10 along with these five characteristics, the thesis will …

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A Case Study Of A Career Ladder Pilot Program Within A Large Florida School District, David Laroche Jan 2007

A Case Study Of A Career Ladder Pilot Program Within A Large Florida School District, David Laroche

USF Tampa Graduate Theses and Dissertations

In 2003, the Florida legislature appropriated funds to finance pilot programs (1012.231, Florida Statutes) to prepare for the 2004-2005 school year in which pay for performance initiatives were to be implemented in each district. Therefore, the purpose of this study was to examine and describe the planning, processes, and implications of a pilot career ladder program that was implemented into a large Florida school district in the spring of 2004. During data collection, the program was terminated therefore creating a second purpose that sought to describe residual implications of a program when it is discontinued. Data collected for this study …

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Practical Vibration Evaluation And Early Warning Of Damage In Post-Tensioned Tendons, Jaime Lopez-Sabando Jan 2007

Practical Vibration Evaluation And Early Warning Of Damage In Post-Tensioned Tendons, Jaime Lopez-Sabando

USF Tampa Graduate Theses and Dissertations

Severe corrosion damage and even complete failure was recently discovered in external post-tensioned (PT) tendons of three Florida's pre-cast, segmental bridges over seawater. A key deterioration factor was the formation of large bleed water grout voids at or near the anchorages. Steel corrosion may occur at the grout-void interface or in the air space of the void itself. Since the tendons are critical to the structural integrity of the bridges, reliable and non-intrusive damage detection methods are desirable to manage or prevent future occurrences. In recent years several indirect non-destructive methods have been developed or improved to evaluate the conditions …

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Faust In Lolita: Composing Sins, Souls, And Rhetorical Redemption, Aurora Mackey Jan 2007

Faust In Lolita: Composing Sins, Souls, And Rhetorical Redemption, Aurora Mackey

USF Tampa Graduate Theses and Dissertations

Goethe's Faust and Nabokov's Humbert both are erudite, middle-aged European scholars who, experiencing a convergence of academic and existential ennui, set eyes upon a young girl and instantly are consumed with lust. In both works the girls' widowed mothers die as a result of the protagonists' lustful intentions; a cross-country flight ensues; the once-respected scholars are wanted for murder; and Gretchen and Lolita each suffer from their sexual and emotional objectification. But the connections between Goethe's play and Nabokov's novel extend far beyond plot points, or even their decidedly different receptions in early 19th century Germany versus mid-20th century America. …

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Achieving Sobriety: A Narrative Investigation Of Women, Identity, And Relationships, Cara T. Mackie Jan 2007

Achieving Sobriety: A Narrative Investigation Of Women, Identity, And Relationships, Cara T. Mackie

USF Tampa Graduate Theses and Dissertations

In this dissertation, I explore the question of how women alcoholics achieve sobriety. Using narrative inquiry, I focus on the identity transformation that must occur in order to maintain sobriety and how a drinking self is deconstructed and reconstructed as a sober self. Today, alcoholism is still viewed as stigmatizing in our society and in all Western cultures. The stigma of alcoholism makes it difficult for alcoholics to communicate their experiences to people who have not had similar experiences. However, storytelling in the presence of supportive people has been shown to be a prominent factor in the process of recovery …

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The Relationship Between Continuing Professional Development And Demographic Characteristics, Professional Practices, And Employment Conditions Of School Psychologists, Alana D. Lopez Jan 2007

The Relationship Between Continuing Professional Development And Demographic Characteristics, Professional Practices, And Employment Conditions Of School Psychologists, Alana D. Lopez

USF Tampa Graduate Theses and Dissertations

Multiple issues that impact service delivery, such as changing student demographic characteristics, educational law and policy, and an increased focus on accountability for services, require school psychologists to adapt and acquire new professional skills in order to meet the needs of students and families. Continuing professional development (CPD) could help school psychologists expand their repertoire of professional skills so that they can engage in effective service delivery. The present study examined the CPD subject areas endorsed by practicing school psychologists and the relationship of those areas with selected demographic characteristics, professional practices, and employment conditions. Secondary analyses were performed using …

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Compliant Pediatric Prosthetic Knee, Sebastian Mahler Jan 2007

Compliant Pediatric Prosthetic Knee, Sebastian Mahler

USF Tampa Graduate Theses and Dissertations

We have designed and examined a compliant knee mechanism that may offer solutions to problems that exist for infants and toddlers who are just learning to walk. Pediatric prosthetic knees on the market today are not well designed for infants and toddlers for various reasons. Children at this age need a prosthetic that is light in weight, durable, and stable during stance. Of the eleven knees on the market for children, all but three are polycentric or four-bar knees, meaning they have multiple points of movement. Polycentric knees are popular designs because they offer the added benefit of stable stance …

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Cogito Ergo Doceo: A Cross-Case Study Of Latin Teacher Cognition In Technology-Rich Communities Of Practice, Ramã³N Anthony Madrigal Jan 2007

Cogito Ergo Doceo: A Cross-Case Study Of Latin Teacher Cognition In Technology-Rich Communities Of Practice, Ramã³N Anthony Madrigal

USF Tampa Graduate Theses and Dissertations

This empirical research study investigated the phenomenon of ancient language teacher cognition in the technology-rich contexts of two secondary teachers of Latin. Although one teacher was an inexperienced teacher working in a traditional, face-to-face classroom in an independent school, the other teacher was an experienced teacher working at a public virtual school. Features of teacher cognition, such as pre-active planning and inter-active decision-making were examined from a communities-of-practice theoretical perspective (Wenger, 1998). An exploratory, sequential mixed-methods research design was implemented in this cross-case study. Among the research findings that emerged from this investigation was the notion of the expedient integration …

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