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Pages
- Title
- OPTIMIZATION OF NETWORK PARAMETERS AND SEMI-SUPERVISION IN GAUSSIAN ART ARCHITECTURES.
- Creator
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Chalasani, Roopa, Georgiopoulos, Michael, University of Central Florida
- Abstract / Description
-
In this thesis we extensively experiment with two ART (adaptive resonance theory) architectures called Gaussian ARTMAP (GAM) and Distributed Gaussian ARTMAP (dGAM). Both of these classifiers have been successfully used in the past on a variety of applications. One of our contributions in this thesis is extensively experiments with the GAM and dGAM network parameters and appropriately identifying ranges for these parameters for which these architectures attain good performance (good...
Show moreIn this thesis we extensively experiment with two ART (adaptive resonance theory) architectures called Gaussian ARTMAP (GAM) and Distributed Gaussian ARTMAP (dGAM). Both of these classifiers have been successfully used in the past on a variety of applications. One of our contributions in this thesis is extensively experiments with the GAM and dGAM network parameters and appropriately identifying ranges for these parameters for which these architectures attain good performance (good classification performance and small network size). Furthermore, we have implemented novel modifications of these architectures, called semi-supervised GAM and dGAM architectures. Semi-supervision is a concept that has been used effectively before with the FAM and EAM architectures and in this thesis we are answering the question of whether semi-supervision has the same beneficial effect on the GAM architectures too. Finally, we compared the performance of GAM, dGAM, EAM, FAM and their semi-supervised versions on a number of datasets (simulated and real datasets). These experiments allowed us to draw appropriate conclusions regarding the comparative performance of these architectures.
Show less - Date Issued
- 2005
- Identifier
- CFE0000474, ucf:46373
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000474
- Title
- FACTORS THAT INFLUENCE TRANSFER OF HAZARDOUS MATERIAL TRAINING: THE PERCEPTION OF SELECTED FIRE-FIGHTER TRAINEES AND SUPERVISORS.
- Creator
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Bhati, Divya, Gary Orwig, Stephen A. Sivo,, University of Central Florida
- Abstract / Description
-
This study examined the influence of factors on transfer of training and was based on the work of Broad and Newstrom (1992). For the purpose of this study the Broad and Newstrom (1992) transfer of training barriers are rephrased into positive statements. The nine transfer of training factors are: (1) reinforcement on the job; (2) little interference from immediate (work) environment; (3) supportive organizational culture; (4) trainees' perception of training programs being practical; (5)...
Show moreThis study examined the influence of factors on transfer of training and was based on the work of Broad and Newstrom (1992). For the purpose of this study the Broad and Newstrom (1992) transfer of training barriers are rephrased into positive statements. The nine transfer of training factors are: (1) reinforcement on the job; (2) little interference from immediate (work) environment; (3) supportive organizational culture; (4) trainees' perception of training programs being practical; (5) trainees' perception of relevant training content; (6) trainees' being comfortable with change and associated effort; (7) trainer being supportive and inspiring; (8) trainees' perception of training being well designed/delivered, and (9) peer support. This study explored the degree to which these factors influenced transfer of training in terms of on-the-job application. The study found supportive organizational culture to be the strongest predictor of transfer of training to on-the-job application. In addition, the degree of influence of Broad and Newstrom's (1992) nine factors varied with the thirteen locations. The study also found perception gaps between fire fighter trainees and their supervisor on factors influencing transfer of training. They differed on four factors: Supportive organizational culture, Perception of training programs being practical, Trainer being supportive and inspiring, and Perception of training being well designed/delivered.
Show less - Date Issued
- 2007
- Identifier
- CFE0001850, ucf:47353
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001850
- Title
- THE EFFECTS ON OPERATOR PERFORMANCE AND WORKLOAD WHEN GUNNERY AND ROBOTIC CONTROL TASKS ARE PERFORMED CONCURRENTLY.
- Creator
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Joyner, Carla, McCauley-Bell, Pamela, University of Central Florida
- Abstract / Description
-
The purpose of this research was to examine operator workload and performance in a high risk, multi-task environment. Specifically, the research examined if a gunner of a Future Combat System, such as a Mounted Combat System, could effectively detect targets in the immediate environment while concurrently operating robotic assets in a remote environment. It also analyzed possible effects of individual difference factors, such as spatial ability and attentional control, on operator performance...
Show moreThe purpose of this research was to examine operator workload and performance in a high risk, multi-task environment. Specifically, the research examined if a gunner of a Future Combat System, such as a Mounted Combat System, could effectively detect targets in the immediate environment while concurrently operating robotic assets in a remote environment. It also analyzed possible effects of individual difference factors, such as spatial ability and attentional control, on operator performance and workload. The experimental conditions included a gunner baseline and concurrent task conditions where participants simultaneously performed gunnery tasks and one of the following tasks: monitor an unmanned ground vehicle (UGV) via a video feed (Monitor), manage a semi-autonomous UGV, and teleoperate a UGV (Teleop). The analysis showed that the asset condition significantly impacted gunnery performance with the gunner baseline having the highest number of targets detected (M = 13.600 , SD = 2.353), and concurrent Teleop condition the lowest (M = 9.325 , SD = 2.424). The research also found that high spatial ability participants tended to detect more targets than low spatial ability participants. Robotic task performance was also affect by the asset condition. The results showed that the robotic target detection rate was lower for the concurrent task conditions. A significant difference was seen between the UGV-baseline (80.1%) when participants performed UGV tasks only and UGV-concurrent conditions (67.5%) when the participants performed UGV tasks concurrently with gunnery tasks. Overall, this study revealed that there were performance decrements for the gunnery tasks as well as the robotic tasks when the tasks were performed concurrently.
Show less - Date Issued
- 2006
- Identifier
- CFE0000979, ucf:46704
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000979
- Title
- DIRECTION OF REFLECTION: THE MEANS BY WHICH ONE ESTABLISHES DIRECTORIAL AND CHOREOGRAPHIC PROFICIENCY.
- Creator
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Wood, Nicholas, Weaver, Earl, University of Central Florida
- Abstract / Description
-
Introduction I examined how one may establish directorial and choreographic proficiency in the contemporary society of American musical theatre. I did so by completing an examination of five personal observations in my craft. These observations included: (1) Directorship and choreography of Welcome to Vegas, an original jukebox musical; (2) Mentorship on Theatre UCF's Nine as Assistant Director and Co-Choreographer; (3) Research on the methodologies of various directors and choreographers; (4...
Show moreIntroduction I examined how one may establish directorial and choreographic proficiency in the contemporary society of American musical theatre. I did so by completing an examination of five personal observations in my craft. These observations included: (1) Directorship and choreography of Welcome to Vegas, an original jukebox musical; (2) Mentorship on Theatre UCF's Nine as Assistant Director and Co-Choreographer; (3) Research on the methodologies of various directors and choreographers; (4) Directorship and choreography of Welcome to Broadway, an original jukebox musical; and (5) Assistant to the Program Director of Broadway Theatre Project. I evaluated parallels of my directing and choreography methodologies with those of noted directors and choreographers in the entertainment industry. These industry professionals include famed choreographer Ernest O. Flatt, Ron Field, Hermes Pan, Joe Layton, and Lee Theodore, acclaimed directors Harold Clurman, Dr. Louis E. Catron, and Jon Jory, and prolific director-choreographers Patricia Birch, Donald Saddler, Bob Avian, Bob Fosse, Tommy Tune, and Michael Bennett, as well as Professor Weaver. I have worked for people who believe that experience alone is enough to make one a successful director, choreographer, or director-choreographer. My experience working with and observations of professional directors, choreographers, and director-choreographers, however, has proven that it takes more than experience alone in order to succeed. I predicted the process of establishing my own directorial and choreographic proficiency will stem from a combination of inspiration, mentorship, trial and error, and experience. Background A director coordinates and mounts theatrical productions while unifying the script, design elements, and cast to serve the world of the play. By dictionary definition, a director is, "�a person who supervises the production of a show for stage or screen with responsibility for action and rehearsals" (Webster 414). Underneath the producer, the director serves as the apex of the production. As compared to directors, choreographers fill a more visually aesthetic capacity in musical theatre. A choreographer is "�a person who designs or arranges the movement of a dance" (Webster 259). The choreographer acts in lieu of the director wherever there is music and step sequence. This is the case with exception being given to the director-choreographer. In an interview with Svetlana McLee Grody, Donald Saddler, original member of the American Ballet Theatre, expressed, "...director choreographer really give a musical a whole concept, a patina of style. Their contribution is a good 40 - 50 percent of the success of the show" (Grody and Lister 16). Experiences I will explicitly reflect on four profound career proceedings. Each will be as an effort to learn to become a better director-choreographer. These observations will chronicle an insightful phase of my learning process. Welcome to Vegas Welcome to Vegas is an original jukebox musical I authored, produced, directed, and choreographed. It was intended that the production would be a cathartic experience for the audience, allowing them to escape from the confines of everyday life by entering the humorous, loquacious, and musical world of the play. The story chronicles the triumphs and misadventures of a struggling young man in New York. When this waiter-by-day, singer-by-night becomes the opening act of a famous Vegas lounge singer, he embarks on an outrageous and witty journey across America in his Pontiac GTO. The musical's book was written while I attended my first semester at the University of Central Florida. The absurd vignette-style scenes were inspired by the sketch comedy of The Carol Burnett Show and the staging of Ernest O. Flatt. The production rehearsed four days per week for nine weeks and utilized a cast of 17 performers who ranged in age from 6 to 67. During production numbers, I drew strongly on the choreographic and visual inspiration of Bob Fosse, utilizing knocked-knees, sickled feet, 1960s movement influence, and a significant use of props, white gloves, fishnet tights, and bowler hats. I used this choreographic and visual concept to create a fervent contrast to the set and costumes, which emulated the visual aesthetics of Stan Lee's comic books. Nine With music and lyrics by Maury Yeston and a script by Arthur Kopit, Nine is a dark musical based on Federico Fellini's 8 1/2 and catalogues "...the last days of a director's once brilliant career" (Kopit 66). As the Assistant Director and Co-Choreographer, I was mentored by and worked directly under Professor Earl Weaver, Artistic Director of Theatre UCF. Upon entering my apprenticeship, I anticipated an authoritarian relationship where I would serve as a supervisory assistant, without exploiting my creative skills. To my pleasant revelation, I served as an intimate and integral component of the production's artistic process, conceptualizing choreography, staging three numbers, and giving notes, in addition to the duties of a managerial assistant. I created a choreographic vision for my work by fusing the styles of the Parisian Folies Bergere with American burlesque, Metro-Goldwyn-Mayer Golden Age movie musicals, and, of course, Bob Fosse's sensual silkiness. I did this while attempting to blend with and compliment Professor Weaver's choreographic style that resided within his world of the production. Welcome to Broadway Welcome to Broadway is an original jukebox musical I authored, produced, directed, and choreographed. My directorial style was greatly influenced by Professor Weaver, after observing his methodologies on Nine. My choreographic style strongly had been inspired by Bob Fosse and Michael Bennett. The production opened and ran for a nearly sold out engagement. My intention for the show was to encapsulate all the magic of the MGM Golden Age movie musicals into 105 minutes, featuring a cast of 25 entertainers, ranging in skill from first production to Equity veteran. My script was highly inspired by the cliche romanticism of Hollywood hits, such as Casablanca, Royal Wedding, Holiday Inn, The Public Enemy, and White Christmas. The story picks up where Welcome to Vegas left off. Michael, the formerly struggling young artist, has now made a name for himself, has inherited a production company, and is about to open his first show on Broadway when things begin to go awry. A jealous, washed-up producer has concocted an outrageous scheme to get rid of Michael on opening night. Chaos ensues behind the scenes, while the show must go on in front of the curtain. My scenic vision was to capture the auspicious spectacle of Footlight Parade, Mary Poppins, and Singing in the Rain. In post-show reflection, I realized my production displayed some similarities to Susan Stroman's succinct comedic timing and physical humor and Hal Prince's fast, moment-to-moment pace, leading me to believe that, perhaps, I had been subconsciously influenced by their works. Broadway Theatre Project Broadway Theatre Project celebrating its 26th anniversary as a summer intensive that Playbill.com refers to as "...the world's most prestigious musical theatre arts education program for high school and college students" (Broadway Theatre Project web). Entering my third year with the project, I serve as the Assistant to the Program Director and Director of Public Relations. My contribution is both administrative and creative, as I work directly under Program Director/Music Director David Sabella-Mills, Co-Artistic Director Darren Gibson, and President/Co-Artistic Director Debra McWaters. Gibson has established himself as a performer and dance captain working with Broadway veteran Ann Reinking on the national and European tours of Fosse. In addition, he has staged ballets for the Richmond Ballet, the Boston Ballet, and the American Ballet Theatre. He is currently Education Director for TexARTS. Gibson is an excellent mentor because he has a wealth of knowledge he is willing to share with me. For instance, he has taught me that in order to be an outstanding choreographer, one must look deeper than merely studying other musicals; one must study how/by whom the choreographers of those musicals were initially inspired. By heeding his counsel, I will be able to go from modifying and/or re-teaching others' choreography to establishing my own choreography. McWaters has had an enviable career directing and choreographing on stages around the world, including Broadway. For 15 years, she served as Assistant then Associate Choreographer for Reinking on Chicago, Fosse, and The Visit. She is an excellent mentor for me because not only is she a disciple of Fosse's, but she has afforded me the opportunity to serve as her Assistant to the Choreographer for three numbers, including staging the original choreography to "Yellow Shoes." This will allow me to analyze and understand the inner workings of a true artistic genius who is seasoned in the craft I wish to pursue. Industry Professionals Additionally, I will research the styles, methodologies, and philosophies of numerous established industry professionals, including: Ernest O. Flatt Ernest O. Flatt was "a dancer, choreographer and director who won four Emmy Awards for his work in television" (Obituary: Ernest O. Flatt). He made his silver-screen debut as a dancer in Dancing in the Dark and his television debut as choreographer in Your Hit Parade. He danced with Gene Kelly in Singin' in the Rain, choreographed the movie Anything Goes, and his dancers were fixtures on The Judy Garland Show, The Entertainers, and The Steve Lawrence Show. Flatt's most lasting television work was for The Carol Burnett Show, on which he served as the choreographer for eleven years (Grody and Lister 24). Despite the fact that Flatt is primarily recognized as a television choreographer, I am compelled to study his work because I admire his style. Although it is reminiscent of years gone by, particularly with partnering, his work is still entertaining and holds value for contemporary theatre as classic musicals are being revived. Studying his work in-depth will serve to enhance my style by showing me how to vary my choreography so the dance numbers do not all look similar. In addition, Flatt believed that allowing the ensemble or solo performer to contribute too much was stifling to his creativity (Grody and Lister 32). On previous productions, I have fallen into this pitfall. Further study of his work will enable me to subscribe to his focus and not be so influenced by what dancers are comfortable doing, as opposed to what they can do in order to expand their personal growth and my growth as a choreographer. Harold Clurman One of the three founders of New York City's Group Theatre, Harold Clurman directed more than 40 productions and was nominated for several Tony Awards. In addition, he was a widely-feared theatre critic for over 30 years; he helped to shape American theatre by writing about it. I will specifically study On Directing, one of Clurman's seven published works on the art of directing. Elia Kazan, who is commonly referred to as one of the most honored and influential directors in Broadway and Hollywood history, has called this particular book "the most influential book on direction ever written" (Clurman Preface). I would be compelled to study Clurman based on Kazan's recommendation alone; however, I am even more motivated to do so because I am discovering that I closely practice his stated philosophy on directing, "Direction is a job, a craft, a profession, and at best, an art. The director must be an organizer, a teacher, a politician, a psychic detective, a lay analyst, a technician, a creative being�All of which means he must be a "great lover" of the art" (Clurman 14). By examining the work of a man who is credited with helping to shape American theatre and whose philosophy so closely matches mine, I desire to formally establish my methodology as a director. Jon Jory Jon Jory learned to act first-hand from his parents, who were successful Hollywood actors of the 1940's and 50's, earning his Actors' Equity card as a young child. He grew to prominence as a director in the early 60's and, since then, he has mounted over 1,300 professional productions. I will specifically study Jory's Tips: Ideas for Directors. Jory says that he worked "making the same mistakes for years that a tip or two by a peer or veteran could have shortcutted" (xiii). His goal with this book is to help directors improve their craft more quickly by passing along the tips he has learned over the years. I am compelled to study Jory because of his willingness to share his tips on what has made him a successful director for approximately one-half of a century spanning nine countries. In addition, he headed the Actor's Theatre of Louisville, Kentucky, for more than 31 years, which he helped to build into one of America's most respected regional theatre companies, earning him a special Tony Award for Achievement in Regional Theatre (Jory xv). Since one of my professional goals is to become an Artistic Director at a regional theatre, Jory is a perfect selection for my research. Bob Fosse Deeply inspired by Fred Astaire and coping with his own psychological and physical abnormalities, Bob Fosse created the most unique and stylized iconic movements and vocabularies in musical theatre history. His most lasting works included Chicago, Damn Yankees, Cabaret, Sweet Charity, and Pippin. Fosse is an eight-time Tony Award-winning consummate artist. Ben Vereen says, "To have worked with Bob Fosse is to have had your hand directly on the pulse of life. To have applied this world-recognizable style into your repertory is to truly know how to dance forever" (McWaters Foreward). I have had the good fortune of learning his distinct techniques from some of his disciples while studying at Broadway Theatre Project. I am compelled to study Fosse because he was a renowned producer, director, choreographer, playwright, screenwriter, dancer, and actor--all of which are aspirations of mine. According to Vereen, Fosse was often called "demanding," "strenuous," and a "task master," yet he was highly respected by his dancers (McWaters Foreword). Fosse's ability to earn respect while demanding perfection is a quality I hope to learn and emulate with further study of his work. Tommy Tune Tommy Tune, nicknamed Broadway's tallest tapper, is considered one of Broadway's most accomplished director-choreographers. He is a 10-time Tony Award winner. "Tommy is the first person in theatrical history to have won a Tony Award in four different categories: Best Featured Actor, Choreography, Best Actor, and Direction" (Grody and Lister 142). At the June, 2015 Tony Awards ceremony, he received a Lifetime Achievement Honor. I am compelled to study Tune's methodology because he is considered a living legend; he has been a big time showman for over 50 years. In addition, I am compelled to study Tune's philosophy because he speaks to me with respect to security as an artist. Tune says, "There is no such thing as security. You must always be willing to expect the unexpected because the journey is never what you expect it to be. So be prepared to be surprised" (Grody and Lister 149). I must learn to trust this philosophy as I face not only the uncertainty of life beyond graduation from the University of Central Florida, but also as I face each door that opens in my future. Michael Bennett Michael Bennett's fascination with West Side Story was the impetus for Bennett to become a director-choreographer of the standing of Jerome Robbins (Grody and Lister 114). As a director, choreographer, writer, and actor, Michael Bennett is a seven-time Tony Award winner. His choreographic works were highly athletic and engrossed in technique. He is best known for his work on Promises, Promises; Follies; Company; and A Chorus Line, and he was fortunate to have had the opportunity to be inspired by such greats as Bob Fosse, Michael Kidd, Ron Field, Lee Theodore, and Danny Daniels (Grody and Lister 114). I am compelled to study Bennett because our early backgrounds are similar: neither of us had dance lessons until we were in our teens, and neither of us could read music, although we both listened to a great deal of it. I am inspired to learn/practice Bennett's methodologies for overcoming these challenges, such as his recommendations to see every musical possible in order to see how good directors-choreographers work and to prepare for a show as far as possible ahead of time (Grody and Lister 101). In addition, I am compelled to study Bennett's technique of compensation when he could not choreograph a number as conceptualized due to the limited skill of the dancer(s) with whom he was working at the time (Grody and Lister 103). Studying and applying these methods and techniques when faced with challenges will enable me to be a better director-choreographer. Deduction It is essential for me to delve into extensive research of directorial and choreographic concepts and pedagogy because I strongly desire to learn the means by which one establishes proficiency as a Director-Choreographer artist. It will help me to answer such questions as: How does one begin to direct/choreograph a piece? How knowledgeable does one need to be with respect to music? How knowledgeable does one need to be with respect to different forms of dance? What affects one most with respect to choreographing a number? Is there value in working with assistants? Since my study will include not only my own personal experiences and observations, but also those of renowned professionals, it will enable me to formally establish my own unique style of directing and choreographing.
Show less - Date Issued
- 2015
- Identifier
- CFH0004889, ucf:45417
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004889
- Title
- INITIAL VALIDATION OF NOVEL PERFORMANCE-BASED MEASURES: MENTAL ROTATION AND PSYCHOMOTOR ABILITY.
- Creator
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Fatolitis, Philip, Jentsch, Florian, University of Central Florida
- Abstract / Description
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Given the high-risk nature of military flight operations and the significant resources required to train U.S. Naval Aviation personnel, continual improvement is required in the selection process. In addition to general commissioning requirements and aeromedical standards, the U.S. Navy utilizes the Aviation Selection Test Battery (ASTB) to select commissioned aviation students. Although the ASTB has been a good predictor of aviation student performance in training, it was proposed that...
Show moreGiven the high-risk nature of military flight operations and the significant resources required to train U.S. Naval Aviation personnel, continual improvement is required in the selection process. In addition to general commissioning requirements and aeromedical standards, the U.S. Navy utilizes the Aviation Selection Test Battery (ASTB) to select commissioned aviation students. Although the ASTB has been a good predictor of aviation student performance in training, it was proposed that incremental improvement could be gained with the introduction of novel, computer administered performance-based measures: Block Rotation (BRT) and a Navy-developed Compensatory Tracking task. This work constituted an initial validation of the BRT, an interactive virtual analog of Shepard-Metzler's (1971) Mental Rotation task that was developed with the intention of quantifying mental rotation and psychomotor ability. For Compensatory Tracking, this work sought to determine if data gathered concord with results in extant literature, confirming the validity of the task. Data from the BRT were examined to determine task reliability and to formulate relevant quantitative/predictive performance human models. Results showed that the BRT performance is a valid spatial ability predictor whose output can be modeled, and that Compensatory Tracking task data concord with the psychometric properties of tracking tasks that have been previously presented in the literature.
Show less - Date Issued
- 2008
- Identifier
- CFE0002413, ucf:47764
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002413
- Title
- MODELING AND CHARACTERIZATION OF ACUTE STRESS UNDER DYNAMIC TASK CONDITIONS.
- Creator
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Millan, Angel, Crumpton-Young, Lesia, University of Central Florida
- Abstract / Description
-
Stress can be defined as the mental, physical, and emotional response of humans to stressors encountered in their personal or professional environment. Stressors are introduced in various activities, especially those found in dynamic task conditions when multiple task requirements must be performed. Stress and stressors have been described as activators and inhibitors of human performance. The ability to manage high levels of acute stress is an important determinant of successful performance...
Show moreStress can be defined as the mental, physical, and emotional response of humans to stressors encountered in their personal or professional environment. Stressors are introduced in various activities, especially those found in dynamic task conditions when multiple task requirements must be performed. Stress and stressors have been described as activators and inhibitors of human performance. The ability to manage high levels of acute stress is an important determinant of successful performance in any occupation. In situations where performance is critical, personnel must be prepared to operate successfully under hostile or extreme stress conditions; therefore training programs and engineered systems must be tailored to assist humans in fulfilling these demands. To effectively design appropriate training programs for these conditions, it is necessary to quantitatively describe stress. A series of theoretical stress models have been developed in previous research studies; however, these do not provide quantification of stress levels nor the impact on human performance. By modeling acute stress under dynamic task conditions, quantitative values for stress and its impact on performance can be assessed. Thus, this research was designed to develop a predictive model for acute stress as a function of human performance and task demand. Initially, a four factor two level experimental design [2 (Noise) x 2 (Temperature) x 2 (Time Awareness) x 2 (Workload)] was performed to identify reliable physiological, cognitive and behavioral responses to stress. Next, multivariate analysis of variance (n=108) tests were performed, which showed statistically significant differences for physiological, cognitive and behavioral responses. Finally, fuzzy set theory techniques were used to develop a comprehensive stress index model. Thus, the resulting stress index model was constructed using input on physiological, cognitive and behavioral responses to stressors as well as characteristics inherent to the type of task performed and personal factors that interact as mediators (competitiveness, motivation, coping technique and proneness to boredom). Through using this stress index model to quantify and characterize the affects of acute stress on human performance, these research findings can inform proper training protocols and help to redesign tasks and working conditions that are prone to create levels of acute stress that adversely affect human performance.
Show less - Date Issued
- 2011
- Identifier
- CFE0004056, ucf:49151
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004056
- Title
- Peak Performance Training.
- Creator
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Hallett, Matthew, Hoffman, Bobby, Rockmore, Benjamin, Clark, Margaret, University of Central Florida
- Abstract / Description
-
Peak performance is defined as an (")episode of superior functioning(") where an individual performs up to (and sometimes exceeds) their full potential (Privette, 1983, p. 1361). Most individuals do not consistently experience episodes of peak performance. After accounting for biological factors, motivation, and external constraints, the inability to achieve peak performance consistently is due to the challenge of successfully selecting and accessing knowledge and skills on demand while under...
Show morePeak performance is defined as an (")episode of superior functioning(") where an individual performs up to (and sometimes exceeds) their full potential (Privette, 1983, p. 1361). Most individuals do not consistently experience episodes of peak performance. After accounting for biological factors, motivation, and external constraints, the inability to achieve peak performance consistently is due to the challenge of successfully selecting and accessing knowledge and skills on demand while under pressure (Brown, 2009). This thesis describes the psychology of peak performance and skill training for peak performance. A peak performance training program is designed specifically for business professionals. The program was delivered to business professionals and a focus group was conducted to gather data on how to improve the training program. Grounded theory was used as the method of inquiry during data analysis. Results indicated that participants reacted favorably to the training content, training design, variety of training activities, and the training's applicability, but had unfavorable reactions to the training duration, comprehension of concepts, training materials, utility, and training conclusions.
Show less - Date Issued
- 2011
- Identifier
- CFE0004116, ucf:49105
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004116
- Title
- IMPROVING THE ADVERSE IMPACT AND VALIDITY TRADE-OFF IN PARAETO OPTIMAL COMPOSITES: A COMPARISON OF WEIGHTS DEVELOPED ON CONTEXTUAL VS TASK PERFORMANCE.
- Creator
-
Tsang, Howin, Wooten, William, University of Central Florida
- Abstract / Description
-
Recent research in reducing adverse impact in personnel selection has focused on the use of various weighting schemes to balance levels of adverse impact and the validity of selection processes. De Corte Lievens & Sackett (2007) suggested the use of the normal boundary intersection method to create a number of weights that optimize adverse impact and criterion validity. This study seeks to improve the efficacy of this solution by looking at specific types of performance, namely task and...
Show moreRecent research in reducing adverse impact in personnel selection has focused on the use of various weighting schemes to balance levels of adverse impact and the validity of selection processes. De Corte Lievens & Sackett (2007) suggested the use of the normal boundary intersection method to create a number of weights that optimize adverse impact and criterion validity. This study seeks to improve the efficacy of this solution by looking at specific types of performance, namely task and contextual performance. It will investigate whether a focus on contextual performance will improve the trade-off by requiring smaller losses in validity for greater gains in adverse impact. This study utilized data from 272 applicants for exempt positions at a multinational financial institution. The two sets of Paraeto optimal composite were developed, one based on contextual performance and the other based on task performance. Results were analyzed based on levels of adverse impact and validity of weights generated using each method. Results indicate that reducing adverse impact required a greater validity trade-off for task performance than contextual performance. Application of this method would allow for greater reductions to adverse impact than the original method while retaining a validity coefficient of 95% of the maximum achieved with regression weighting. Though this method would limit practitioners to selecting based on contextual performance, the use of minimal cut-off scores on task predictors or job experience could allow employers to incorporate task measures while further reducing adverse impact.
Show less - Date Issued
- 2010
- Identifier
- CFE0003399, ucf:48386
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003399
- Title
- Predictors of an Effective Performance Measurement System: Evidence from Municipal Governments in Turkey.
- Creator
-
Eliuz, Sedat, Kapucu, Naim, Hu, Qian, Martin, Lawrence, Wang, Xiaohu, University of Central Florida
- Abstract / Description
-
The aim of this study is to examine the predictors of effective performance measurement in the context of Turkish municipalities. In the study, mainly the theoretical guidance of context-design-performance model has been utilized to examine the contextual and design factors which have influenced the effective use of performance measurement systems in Turkish municipalities. The following research questions were examined in this study: To what extent do Turkish municipalities implement...
Show moreThe aim of this study is to examine the predictors of effective performance measurement in the context of Turkish municipalities. In the study, mainly the theoretical guidance of context-design-performance model has been utilized to examine the contextual and design factors which have influenced the effective use of performance measurement systems in Turkish municipalities. The following research questions were examined in this study: To what extent do Turkish municipalities implement performance measurement systems effectively?, What are the predictors of effective performance measurement in Turkish municipalities?, and whether or to what extent do quality of performance measures, technical capacity of the municipality for performance measurement, organizational support, and external support for the use of performance measurement have influence on the effectiveness level of performance measurement systems in Turkish municipalities? In the study, the data were collected from Turkish municipalities by a self-administered online survey and were analyzed by using the structural equation modeling (SEM). It is hypothesized in the study that external support and organizational support for the use performance measurement, and technical capacity for the performance measurement are associated with quality of performance measures and effectiveness of performance measurement systems in general. The results of the study supported the hypotheses of the study regarding the relationships among organizational support, technical capacity, quality of performance measures, and effectiveness of performance measurement. Although the results confirmed that external support has an indirect effect on effectiveness of performance measurement via technical capacity and quality of performance measures, the hypothesis regarding the direct effect of it on effectiveness of performance measurement was not supported. Moreover, the study found that support of employees and citizens for the use of performance measurement in Turkish municipalities are relatively low, the municipalities have deficiencies both in the quantity and the quality of staff that are responsible for performance measurement activities, and the level of employee involvement in the development of performance measures is low.
Show less - Date Issued
- 2014
- Identifier
- CFE0005487, ucf:50364
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005487
- Title
- Belief and Christmas: Performing Belief and the Theory and Practice of Christmas Performance.
- Creator
-
Nicely, Brenna, Listengarten, Julia, Seay, Donald, Larson, Peter, Wood, Mary, University of Central Florida
- Abstract / Description
-
In the United States, Christmastime has become a time of tension between the holy ideals of family togetherness, childhood innocence, and goodwill towards men and commercial idolatry. Christ and Santa Claus are pitted against each other in the war on Christmas between religion and secularism instead of feasting together on ham and figgy pudding in the traditional fashion. While many would agree that the everyday realities of the Christmas season do not often live up to the ideals imposed upon...
Show moreIn the United States, Christmastime has become a time of tension between the holy ideals of family togetherness, childhood innocence, and goodwill towards men and commercial idolatry. Christ and Santa Claus are pitted against each other in the war on Christmas between religion and secularism instead of feasting together on ham and figgy pudding in the traditional fashion. While many would agree that the everyday realities of the Christmas season do not often live up to the ideals imposed upon the holiday, few are able to tell why this is so or even trace the roots of their discontent.In an exploration of the unique anomaly of the hierosecular American Christmas, I propose that the unique systems of Christmas belief extend beyond the usual boundaries of sacred and secular to create a complex web of different beliefs that are performed together to create the unique feeling of Christmas. From a performance theory perspective, I use performance as both traditionally theatrical and as a paradigm for understanding and expressing belief in an effort to explore the essential but elusively defined cultural signifiers of the American Christmas.Through a series of case studies focusing on various traditions of Christmas performance, I apply the performance theories of Diana Taylor, Patrice Pavis, Victor Turner and others to such Christmas staples as Charles Dickens' A Christmas Carol and Tchaikovsky's The Nutcracker. In doing so, I propose different points for viewing Christmas and introducing new points of inquiry for questioning the meaning of Christmas, belief, and performance.
Show less - Date Issued
- 2013
- Identifier
- CFE0004731, ucf:49823
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004731
- Title
- IMPROVING BUSINESS PERFORMANCE THROUGH THE INTEGRATION OF HUMAN FACTORS ENGINEERING INTO ORGANIZATIONS USING A SYSTEMS ENGINEERING APPROACH.
- Creator
-
Philippart, Monica, Karwowski, Waldemar, University of Central Florida
- Abstract / Description
-
Most organizations today understand the valuable contribution employees as people (rather than simply bodies) provide to their overall performance. Although efforts are made to make the most of the human in organizations, there is still much room for improvement. Focus in the reduction of employee injuries such as cumulative trauma disorders rose in the 80's. Attempts at increasing performance by addressing employee satisfaction through various methods have also been ongoing for several...
Show moreMost organizations today understand the valuable contribution employees as people (rather than simply bodies) provide to their overall performance. Although efforts are made to make the most of the human in organizations, there is still much room for improvement. Focus in the reduction of employee injuries such as cumulative trauma disorders rose in the 80's. Attempts at increasing performance by addressing employee satisfaction through various methods have also been ongoing for several years now. Knowledge Management is one of the most recent attempts at controlling and making the best use of employees' knowledge. All of these efforts and more towards that same goal of making the most of people's performance at work are encompassed within the domain of the Human Factors Engineering/Ergonomics field. HFE/E provides still untapped potential for organizational performance as the human and its optimal performance are the reason for this discipline's being. Although Human Factors programs have been generated and implemented, there is still the need for a method to help organizations fully integrate this discipline into the enterprise as a whole. The purpose of this research is to develop a method to help organizations integrate HFE/E into it business processes. This research begun with a review of the ways in which the HFE/E discipline is currently used by organizations. The need and desire to integrate HFE/E into organizations was identified, and a method to accomplish this integration was conceptualized. This method consisted on the generation of two domain-specific ontologies (a Human Factors Engineering/Ergonomics ontology, and a Business ontology), and mapping the two creating a concept map that can be used to integrate HFE/E into businesses. The HFE/E ontology was built by generating two concept maps that were merged and then joined with a HFE/E discipline taxonomy. A total of four concept maps, two ontologies and a taxonomy were created, all of which are contributions to the HFE/E, and the business- and management-related fields.
Show less - Date Issued
- 2008
- Identifier
- CFE0002445, ucf:47716
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002445
- Title
- A Study of Approaches to Improve Advanced Placement Social Studies Examination Student Performance in One Urban Florida High School.
- Creator
-
Laser, Sabine, Taylor, Rosemarye, Ceballos, Marjorie, Baldwin, Lee, Fritz, Ronald, University of Central Florida
- Abstract / Description
-
The purpose of this study was to investigate the efficacy of two instructional approaches, practice examinations and beyond-school-day tutoring, in improving Advanced Placement (AP) examination scores in AP U.S. History and AP World History in one urban Florida high school. AP U.S. History and AP World History examination scores of students who did and who did not participate in AP practice examination and AP beyond-school-day tutoring were analyzed to determine if the two instructional...
Show moreThe purpose of this study was to investigate the efficacy of two instructional approaches, practice examinations and beyond-school-day tutoring, in improving Advanced Placement (AP) examination scores in AP U.S. History and AP World History in one urban Florida high school. AP U.S. History and AP World History examination scores of students who did and who did not participate in AP practice examination and AP beyond-school-day tutoring were analyzed to determine if the two instructional approaches to improving student examination performance were effective. Because the instructional approaches were implemented in one school within the school district of study, a purposive sample was used. Data collected included practice examination participation data, beyond-school-day tutoring attendance data, and AP U.S. History and AP World History examination scores for students enrolled in AP U.S. History and AP World History at the school of study (FHS) and the matched high school (MHS).
Show less - Date Issued
- 2019
- Identifier
- CFE0007669, ucf:52479
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007669
- Title
- SHOULD ATHLETES RECEIVE SLEEP HYGIENE EDUCATION? A SYSTEMATIC LITERATURE REVIEW.
- Creator
-
Contreras, Ines L, Fisher, Thomas J., Valdes, Anna, University of Central Florida
- Abstract / Description
-
Previous studies show the need to find a solution to improve the athlete's recovery and help overcome their sleep disorders. Sleep hygiene is a list of habits and recommendation that enhance sleep quality. Sleep hygiene education has been used in some research to fill the need of the athletes. Still, a lack of information exists on the development of sleep hygiene programs and related impacts. This thesis aims to perform a systematic review of the literature of scholarly journals articles...
Show morePrevious studies show the need to find a solution to improve the athlete's recovery and help overcome their sleep disorders. Sleep hygiene is a list of habits and recommendation that enhance sleep quality. Sleep hygiene education has been used in some research to fill the need of the athletes. Still, a lack of information exists on the development of sleep hygiene programs and related impacts. This thesis aims to perform a systematic review of the literature of scholarly journals articles from 2007 to 2018, focusing on the relationship between sleep hygiene education and athletes sleep quality and quantity. The investigation concluded with 16 qualifying articles. A synthesis of recommendations from all studies offered sleep hygiene suggestions for athletes; all the results are provided in table 12. The further overall conclusion of the selected articles settled that sleep hygiene is recommended for athletes, yet the methods and strategies are vague and not precise. A strong recommendation from this systematic literature review is the creation of a standardized list of sleep hygiene habits focused on athletes to improve their sleep quality and quantity.
Show less - Date Issued
- 2019
- Identifier
- CFH2000477, ucf:45839
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000477
- Title
- COMMUNICATION MODALITY AND AFTER ACTION REVIEW PERFORMANCE IN A DISTRIBUTED IMMERSIVE VIRTUAL ENVIRONMENT.
- Creator
-
Kring, Jason P., Salas, Eduardo, University of Central Florida
- Abstract / Description
-
Virtual teams, in which geographically separate individuals interact via a technology bridge to perform collective activities, are becoming commonplace in the military, business, and education. Despite numerous benefits, virtual teams often lack face-to-face (FTF) interaction which may alter communication processes and subsequently affect team factors necessary for successful performance. Previous research indicated local teams, with members at the same physical location, outperformed...
Show moreVirtual teams, in which geographically separate individuals interact via a technology bridge to perform collective activities, are becoming commonplace in the military, business, and education. Despite numerous benefits, virtual teams often lack face-to-face (FTF) interaction which may alter communication processes and subsequently affect team factors necessary for successful performance. Previous research indicated local teams, with members at the same physical location, outperformed distributed teams, with members at different locations, in a series of military-style missions in an immersive virtual environment (VE). The present study replicated and extended this effort by measuring how communication modality affects three team factors often cited as facilitating performance: shared mental models (SMMs), cohesion (task and interpersonal), and trust (cognitive and emotional). Local teams were expected to again perform better than distributed teams and exhibit greater SMM similarity, cohesion, and trust. Furthermore, a brief team communication training (TCT) program was administered to half of the teams on the premise training would improve distributed team performance. Thirty two, 2-person teams were distributed into four experimental conditions (n = 8) based on location (local vs. distributed) and training (TCT vs. no-TCT) and then conducted five VE missions. Each mission required the team to search a 10-room building for hazardous materials and opposing forces while protecting neutral bystanders. Results showed local teams again performed better than distributed teams on overall mission performance, however the difference was less robust than anticipated. Analyses of the three team factors revealed a main effect of location as local teams reported higher levels of cognitive trust and more agreement on one of 10 SMM measures than distributed teams. A similar difference was found for the main effect of TCT with trained teams exhibiting higher cognitive trust than no-TCT teams. Results support that distributed teams operating in a common virtual setting experience performance deficits when compared to their physically co-located counterparts. Future research is needed to address the role of cognitive trust for virtual teams, the time required to develop detectable levels of emotional trust and cohesion, and how social presence between team members influences performance.
Show less - Date Issued
- 2004
- Identifier
- CFE0000054, ucf:46074
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000054
- Title
- AMERICAN VIRAGOS: DEPICTING HEROINES IN PUBLIC ART.
- Creator
-
Henry, Cara, Raimundi-Ortiz, Wanda, University of Central Florida
- Abstract / Description
-
To confront the inadequate representation of women as heroic figures in American public art, this project investigates the precedent of representing heroines in art. Through researching artwork featuring heroines, and heroic figures in general, this project aims to understand the historical context that new works featuring heroines will fit into. A template for constructing art featuring heroines was developed, showing what features or qualities are generally emphasized for the artwork to...
Show moreTo confront the inadequate representation of women as heroic figures in American public art, this project investigates the precedent of representing heroines in art. Through researching artwork featuring heroines, and heroic figures in general, this project aims to understand the historical context that new works featuring heroines will fit into. A template for constructing art featuring heroines was developed, showing what features or qualities are generally emphasized for the artwork to read as heroic. As art history has supplied principally man heroic figures, it was interesting trying to discern whether a template for art about heroines is different or essentially the same as a template for heroes. This project also includes three groups of artworks: new portraits for United States paper currency featuring American heroines, propaganda posters featuring Lady Liberty, and proposals for public installations that celebrate American heroines. These works investigate the process of placing women in spaces historically used to celebrate predominantly man heroic figures. In this investigation, I found that many heroic signifiers used for heroes were suitable for heroines. Emphasize physical strength, a performance of masculinity, or an emphasized performance of femininity were not necessary for the portrayal of heroines to read as heroic. By creating these artworks and a template for constructing heroines, this project will hopefully encourage and enable other artists to create works featuring heroines and generate support for better representation of women in public art.
Show less - Date Issued
- 2017
- Identifier
- CFH2000170, ucf:46041
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000170
- Title
- THE MEDIATING ROLE OF MOTIVATION AND JOB SATISFACTION IN WORK ENVIRONMENT-OUTCOME RELATIONSHIPS.
- Creator
-
Guzman, Melissa, Pritchard, Robert, University of Central Florida
- Abstract / Description
-
Research that links various aspects of the work environment to important work outcomes can be traced back almost seventy years. Despite the history and proliferation of these studies, firm conclusions have not been reached regarding the ways through which the work environment impacts these outcomes. For example, mediating variables such as motivation and job satisfaction have been proposed as affective and cognitive states that could impact the environment-outcome relationships but have...
Show moreResearch that links various aspects of the work environment to important work outcomes can be traced back almost seventy years. Despite the history and proliferation of these studies, firm conclusions have not been reached regarding the ways through which the work environment impacts these outcomes. For example, mediating variables such as motivation and job satisfaction have been proposed as affective and cognitive states that could impact the environment-outcome relationships but have received little attention. Additionally, organizational and contextual moderators such as group size and demographics that could impact the relationships have been called for but have yet to be studied. Consequently, much remains to be examined in the environment-outcome relationships beyond the basic links. Therefore, the primary objective of the current study was to investigate the effects of motivation and job satisfaction as mediators, and group size, group tenure, and group gender composition as moderators, of work environment-work outcome relationships. Specifically, it was proposed that motivation and job satisfaction mediate the relationships between the feedback environment, learning environment, and reward and recognition environment and job performance and turnover intentions. Finally, it was expected that group size, group tenure, and group gender composition moderate these same environment-outcome relationships. It is suggested that findings gleaned from this study can provide a clearer picture of how certain work environment variables impact specific work outcomes, which can provide researchers and practitioners with information to improve the organizational setting and individual and organizational outcomes of interest. Support was found for several hypotheses and future research directions are noted.
Show less - Date Issued
- 2007
- Identifier
- CFE0001724, ucf:47299
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001724
- Title
- FRIEND/FOE IDENTIFICATION ACCURACY AND SHOOTING PERFORMANCE: EFFECTS OF PRIOR TASK LOADING AND TIME PRESSURE.
- Creator
-
Burke, Kelly, Hancock, Peter, University of Central Florida
- Abstract / Description
-
The current dismounted soldier and the soldier of the future will be loaded' with more information processing tasks while they perform shooting tasks. It is conceivable that some increased level of cognitive tasking may be performed simultaneously with required shooting tasks. The effect of cognitive load on shooting performance has been previously examined (Scribner and Harper, 2001). This study concentrated on the effect of various cognitive workload demands on a friend-foe...
Show moreThe current dismounted soldier and the soldier of the future will be loaded' with more information processing tasks while they perform shooting tasks. It is conceivable that some increased level of cognitive tasking may be performed simultaneously with required shooting tasks. The effect of cognitive load on shooting performance has been previously examined (Scribner and Harper, 2001). This study concentrated on the effect of various cognitive workload demands on a friend-foe discrimination shooting task in a single- and dual-task scenario. In light of this, it is imperative that the soldier not be overburdened mentally, which may result in decreased survivability and lethality. Specifically, this study was designed to examine the ability of the soldier to perform friend-foe target discrimination and shooting accuracy, with varying target exposure times, friendly target signatures, and varying cognitive load demands (working memory recall task). Using the Small Arms Simulator Testbed (SAST) we examined the effects of manipulations of working memory load and sustained information transfer, on shooting performance (as measured by target acquisition and friend/foe discrimination indices). Additionally, we investigated subjective measures of workload and stress. A secondary task, administered aurally, was given to subjects to attend to while they performed shooting (friend/foe discrimination task) scenarios: working memory recall task. Each type of task consisted of three levels of difficulty. Analysis of variance revealed significant differences for the memory recall task during shooting and non-shooting conditions. Furthermore, results showed that workload increased as a function of task demand, with associated decreases in shooting performance.
Show less - Date Issued
- 2007
- Identifier
- CFE0001681, ucf:47212
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001681
- Title
- CENTRAL FLORIDA HIGH SCHOOL PRINCIPALS' PERCEPTIONS OF THE FLORIDA SCHOOL INDICATORS REPORT.
- Creator
-
Gaught, William, Hahs-Vaughn, Debbie, University of Central Florida
- Abstract / Description
-
The purpose of this study was to identify the perceptions that central Florida public high school principals had regarding the Florida School Indicators Report (FSIR) and its usefulness. The FSIR, published by the Florida Department of Education, was designed to be a comprehensive, single source document for parents, lawmakers, and school administrators to compare key performance indicators to similar schools or districts state wide. It provided information on 74 different indicators of...
Show moreThe purpose of this study was to identify the perceptions that central Florida public high school principals had regarding the Florida School Indicators Report (FSIR) and its usefulness. The FSIR, published by the Florida Department of Education, was designed to be a comprehensive, single source document for parents, lawmakers, and school administrators to compare key performance indicators to similar schools or districts state wide. It provided information on 74 different indicators of school or district performance. A total of 70 public high school principals from 13 central Florida school districts responded to a postal survey and provided their perceptions regarding the importance of indicators in the FSIR, how they used the FSIR at their schools, and what barriers they felt affected the ability of their administrative staffs to collect and analyze data on the FSIR indicators. Eighteen of the 70 principals participated in follow-up telephone interviews. Quantitative and qualitative analysis of the postal surveys and interviews revealed the principals perceived FSIR indicators related to Florida's mandated Florida Comprehensive Assessment Test (FCAT) as the most important indictors in the FSIR. The indicators FCAT Results and FCAT Writes were ranked first and second respectively in priority by the participating principals. This finding demonstrated the importance that principals placed on the state's high-stakes test. Other categories of FSIR indicators are were also ranked in the findings reported in this study, along with how the principals used the FSIR at their schools. The data collected from the postal survey revealed there was a statistically significant relationship between the priority principals assigned to the FSIR indicators and their ability to collect and analyze data related to them. In addition, survey data allowed development of multiple regression models that could be used to predict the priority principals assigned to several FSIR categories of indicators based on the ability to collect and analyze data. The study findings indicated that principals perceived lack of time for data analysis as the biggest barrier they faced when evaluating the FSIR indicators. After the lack of time, principals rated lack of administrator training in data analysis as the second biggest obstacle to using the FSIR. The findings indicated that principals felt the availability of data and technology were not significant barriers to their staff's ability to conduct data analysis on the FSIR. The conclusions drawn from the study were that central Florida high school principals perceived the results on the state's mandated Florida Comprehensive Assessment Test (FCAT) to be the most important indicators in the FSIR. In addition, the research identified that the lack of time was the single greatest barrier principals encountered when it came to collecting and analyzing data on the FSIR. A lack of training programs in data collection and analysis for administrators was also noted in the findings.
Show less - Date Issued
- 2007
- Identifier
- CFE0001688, ucf:47204
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001688
- Title
- ENTIRE LOAD EFFICIENCY AND DYNAMIC PERFORMANCE IMPROVEMENTS FOR DC-DC CONVERTERS.
- Creator
-
Abdel-Rahman, Osama, Batarseh, Issa, University of Central Florida
- Abstract / Description
-
The scope of this work can be summarized by three main aspects of DC-DC power converters. The first aspect is soft switching topologies to improve conversion efficiency for On-Board Converters or Point of load (POL) converters, the second aspect is load adaptive control techniques to improve all load efficiency for battery powered DC-DC converters that are applied to mobile devices, and the third aspect is dynamic performance improvement techniques to improve load transient in voltage...
Show moreThe scope of this work can be summarized by three main aspects of DC-DC power converters. The first aspect is soft switching topologies to improve conversion efficiency for On-Board Converters or Point of load (POL) converters, the second aspect is load adaptive control techniques to improve all load efficiency for battery powered DC-DC converters that are applied to mobile devices, and the third aspect is dynamic performance improvement techniques to improve load transient in voltage regulators. Topologies and control techniques for DC-DC converters are presented after reviewing loads powering requirements and steady-state and transients design challenges.
Show less - Date Issued
- 2007
- Identifier
- CFE0001625, ucf:47186
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001625
- Title
- DIFFERENCES IN ACADEMIC PERFORMANCE AND SELF-REGULATED LEARNING BASED ON LEVEL OF STUDENT PARTICIPATION IN SUPPLEMENTAL INSTRUCTION.
- Creator
-
Mack, Ana, Pawlas, George, University of Central Florida
- Abstract / Description
-
This study examined differences in academic performance and self-regulated learning based on levels of student participation in Supplemental Instruction (SI) sessions in two introductory undergraduate biology and chemistry courses offered at University of Central Florida in the Spring 2006 semester. The sample consisted of 282 students enrolled in the biology class and 451 students enrolled in chemistry. Academic performance was measured using students' final course grades and rates of...
Show moreThis study examined differences in academic performance and self-regulated learning based on levels of student participation in Supplemental Instruction (SI) sessions in two introductory undergraduate biology and chemistry courses offered at University of Central Florida in the Spring 2006 semester. The sample consisted of 282 students enrolled in the biology class and 451 students enrolled in chemistry. Academic performance was measured using students' final course grades and rates of withdrawal from the courses. The self-regulated learning constructs of motivation, cognition, metacognition, and resource management were measured using the Motivated Strategies for Learning Questionnaire (MSLQ). Relationships between students' gender and ethnic background and levels of SI participation were also analyzed in this research. Findings in both biology and chemistry courses revealed a statistically significant decrease in student motivation from beginning to end of semester. In chemistry, frequent SI participants also showed statistically significantly higher levels of motivation at the end of the semester than occasional and non-SI participants. There were no statistically significant gains in cognitive, metacognitive, and resource management strategies from beginning to end of semester. However, statistically significant differences in resource management were observed at the end of the semester among SI attendance groups in both courses. Students in the high SI attendance group were more likely to use learning resources than those who did not participate regularly or did not participate at all. Statistically significant differences in academic performance based on students' SI participation were found in both biology and chemistry courses. Frequent SI participants had significantly higher final percentage grades and were more likely to receive grades of A, B, or C, than those who either did not attend SI regularly of did not participate at all. They were also less likely to withdraw from the course than occasional or non-SI participants. In biology, no relationship between SI participation, gender, and student ethnic background was found. In chemistry, female students were significantly more likely to attend SI regularly than males. Chemistry minority students had significantly higher representation among occasional SI participants. An important implication involved the use of pedagogical approaches that make lecture classrooms more interactive and encourage student motivation and engagement. This study could be replicated in other science and non-science courses that offer SI sessions. Additional factors in the success of SI programs and student motivation can be added, such as SI leaders' experience and major. Follow-up studies on students who completed the courses included in this study can be conducted to determine whether they reenrolled in other science courses, continued attending SI sessions, and gained self-regulated learning skills.
Show less - Date Issued
- 2006
- Identifier
- CFE0001516, ucf:47149
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001516
