View All Items

Title: ASSESSING THE WEB-BASED DESTINATION MARKETING ACTIVITIES: A RELATIONSHIP MARKETING PERSPECTIVE.
Creator: Cobos, Liza, Wang, Youcheng, University of Central Florida
Abstract / Description: Innovations in information technology have played an important role in the way business is conducted. Technology innovations have great impact on tourism destination marketing organizations such as convention and visitor bureaus, since they are highly dependent on information and timely distribution of it to the public. Information technology innovations such as the Internet allow CVBs to perform their marketing functions in a more efficient manner. The implementation of web-based marketing...
Show moreInnovations in information technology have played an important role in the way business is conducted. Technology innovations have great impact on tourism destination marketing organizations such as convention and visitor bureaus, since they are highly dependent on information and timely distribution of it to the public. Information technology innovations such as the Internet allow CVBs to perform their marketing functions in a more efficient manner. The implementation of web-based marketing functions is impacted by organizational characteristics that either foster or hinder their implementation (Thong, 1999; Tornatzky & Fleischer, 1990; Wang & Fesenmaier, 2006; Zhu & Kraemer, 2005). Information technology innovations have been adopted by organizations in different levels of sophistication. Since the main function of a CVB is the promotion of a destination technologies that facilitate this process are important to this type of organization. Unfortunately, the marketing practice of American CVBs is still dominated by principles of mass marketing by communicating the same message to all consumers. As a result, the use of websites by American CVB has been limited to information provision functions and has lost opportunities to build relationship with customers through additional web-based marketing activities. This study proposes that CVBs should use web-based marketing activities to attract and retain relationships with customers. This study provides two main contributions to the existing literature: a) examines web-based marketing functions from a relationship marketing perspective and b) examines the impact of organizational characteristics on the sophistication level of web-based marketing functions. The use and effectiveness of web functions and its applications were examined. The results showed that the majority of the CVBs focus the use of their website to provide information. A standard multiple regression was used to investigate the impact of the organizational factors on the different web functions. The results of the regression show that size, financial resources and management team's technological expertise are the only factors that impact the level of web functions implemented by CVBs.
Show less
Date Issued: 2006
Identifier: CFE0001470, ucf:47083
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001470

Title: EFFECTS OF THREE INSTRUCTIONAL SCHEDULES ON SKILL ACQUISITION AND GENERALIZATION IN THE USE OF TWO-WAY RADIOS TO REPORT TASK COMPLETION BY HIGH SCHOOL STUDENTS WITH MODERATE INTELLECTUAL DISABILITIES.
Creator: Perez-Turner, Geraldine, Miller, Kevin, University of Central Florida
Abstract / Description: Educators of students with moderate and severe intellectual disabilities face a significant challenge in preparing their students while in school to function, acquire, and maintain skills that would facilitate successful performance in the workforce while in supported and/or independent employment after graduation. The field of special education still debates about the best way to teach students with moderate intellectual disabilities, the best setting for their instruction and the best...
Show moreEducators of students with moderate and severe intellectual disabilities face a significant challenge in preparing their students while in school to function, acquire, and maintain skills that would facilitate successful performance in the workforce while in supported and/or independent employment after graduation. The field of special education still debates about the best way to teach students with moderate intellectual disabilities, the best setting for their instruction and the best instructional schedule. The current research investigated the effectiveness and efficiency of three instructional schedules in the skill acquisition and generalization of two-way radio usage to report task completion by high school students with moderate intellectual disabilities. The instructional schedules investigated were: (a) community-based instruction only (CBI), (b) community based instruction plus simulated instruction in the classroom-same day (CBISC) and (c) simulated instruction in the classroom only (SICO). A Multiple Probe Design across participants with intermittent probe trials within each instructional group, and an added generalization phase (Horner & Baer, 1978; Tawney & Gast, 1984; Alberto & Troutman, 2003) was employed in this study. Nine high school students with moderate intellectual disabilities, three in each instructional schedule, were taught to use a two-way radio to report task completion. The results of the study revealed that the CBI instructional schedule was the overall most efficient instructional schedule for skill acquisition. Two of the CBI participants required the least number of trials to learn to use a two-way radio to report task completion. The second most efficient schedule was the CBISC and the least efficient instructional schedule was the SICO. Based on Mean scores, learning efficiency appeared to be greater for the participants in the CBI and CBISC instructional schedule. These participants required the least number of intrusive prompts. Results indicated that the SICO instructional scheduled was more efficient for only one participant. This participant only required verbal prompts for acquisition of the skill. However, participant one on the SICO instructional schedule required the most intrusive prompts of all participants across groups. For generalization, the CBISC instructional schedule appeared to be the most effective. In this schedule, the two participants that concluded the study generalized the skill across three novel settings with 100% accuracy. The SICO schedule, also had two participants generalized the skill across three novel settings; however, one participant in that group failed to generalize the skill in two settings. The CBI instructional schedule appeared to be the least effective for skill generalization in this study. In this schedule, only one participant generalized the skill in all three novel settings.
Show less
Date Issued: 2005
Identifier: CFE0000398, ucf:46322
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000398

Title: INTEGRATING KEY ELEMENTS IN AN E-LEARNING CURRICULUM FOR AN OPTIMUM EDUCATIONAL AND INTERACTIVE USER EXPERIENCE.
Creator: Stearns, Heather, Jones, Dan, University of Central Florida
Abstract / Description: This study determines the particular components that are considered the best practices to use when implementing an e-Learning curriculum. Technical communicators and instructional designers have numerous development options to choose from. However, practices that work in academe do not always integrate well in a corporate setting, and what works for one corporation may not work for another. There is no singular methodology for developers to apply that enables e-Learning to fit every...
Show moreThis study determines the particular components that are considered the best practices to use when implementing an e-Learning curriculum. Technical communicators and instructional designers have numerous development options to choose from. However, practices that work in academe do not always integrate well in a corporate setting, and what works for one corporation may not work for another. There is no singular methodology for developers to apply that enables e-Learning to fit every organization's needs. Research shows that to ensure a successful online learning implementation, a sound project management team must be in place at the beginning of the project planning. This team must be prepared to collaborate with managers and users across an organization and carefully incorporate their suggestions into the curriculum design. Additionally, this team must be experienced not only in making sure that the project is launched on time and within the defined budget, but also in asking pertinent questions about the users, content structure, and design. Implementing an e-Learning site involves more than putting a Web page online for users to view. Developers must know about adult learning styles, must know how to incorporate interactive activities (like games and simulations), and must know how to write content so that it is engaging yet understandable.
Show less
Date Issued: 2008
Identifier: CFE0002099, ucf:47547
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002099

Title: A NON-ISOLATED HALF BRIDGE BUCK-BASED CONVERTER FOR VRM APPLICATION AND SMALL SIGNAL MODELING OF A NON-CONVENTIONAL TWO PHASE BUCK.
Creator: Batarseh, Majd, Batarseh, Issa, University of Central Florida
Abstract / Description: The challenges imposed on Voltage Regulator Modules (VRM) become difficult to be achieved with the conventional multiphase buck converter commonly used on PC motherboards. For faster data transfer, a decrease in the output voltage is needed. This decrease causes small duty cycle that is accompanied by critical problems which impairs the efficiency. Therefore, these problems need to be addressed. Transformer-based non-isolated topologies are not new approaches to extend the duty cycle and...
Show moreThe challenges imposed on Voltage Regulator Modules (VRM) become difficult to be achieved with the conventional multiphase buck converter commonly used on PC motherboards. For faster data transfer, a decrease in the output voltage is needed. This decrease causes small duty cycle that is accompanied by critical problems which impairs the efficiency. Therefore, these problems need to be addressed. Transformer-based non-isolated topologies are not new approaches to extend the duty cycle and avoid the associated drawbacks. High leakage, several added components and complicated driving and control schemes are some of the trade-offs to expand the duty cycle. The objective of this work is to present a new dc-dc buck-based topology, which extends the duty cycle with minimum drawbacks by adding two transformers that can be integrated to decrease the size and two switches with zero voltage switching (ZVS). Another issue addressed in this thesis is deriving a small signal model for a two-input two-phase buck converter as an introduction to a new evolving field of multi-input converters.
Show less
Date Issued: 2006
Identifier: CFE0001513, ucf:47130
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001513

Title: A CASE STUDY OF THE EFFECTS OF INQUIRY BASED PROFESSIONAL DEVELOPMENT THROUGH THE USE OF A MENTOR ON AN ALTERNATIVELY CERTIFIED ELEMENTARY TEACHER'S SCIENCE TEACHING SELF-EFFICACY.
Creator: Thrift, Michelle, Jeanpierre, Bobby, University of Central Florida
Abstract / Description: One alternatively certified elementary teacher was the subject of this sixteen week research study on science teaching self-efficacy. The researcher taught inquiry based student level science lessons to the fourth grade teacher. The teacher participant, in turn, taught those same lessons to her class while the researcher observed and took field notes. The participant responded to specific open ended questions in a journal after each science experience and also completed three interviews with...
Show moreOne alternatively certified elementary teacher was the subject of this sixteen week research study on science teaching self-efficacy. The researcher taught inquiry based student level science lessons to the fourth grade teacher. The teacher participant, in turn, taught those same lessons to her class while the researcher observed and took field notes. The participant responded to specific open ended questions in a journal after each science experience and also completed three interviews with the researcher. Each sequential lesson from the researcher was then modified based on participant needs. The participant completed the STEBI (Science Teaching Efficacy Belief Instrument) as a pre and post test to measure the effects of the above mentioned activities. The collected data from the STEBI was reported quantitatively. The collected data from the reflective journal entries and interviews were reported qualitatively. After careful analysis of the data gathered for this case study, the researcher came to the conclusion that inquiry based professional development through the use of a mentor affected the alternatively certified elementary teacher's science teaching self-efficacy. The subject maintained a positive attitude about the use of a mentor for the duration of the study and her Personal Science Teaching Efficacy increased or stayed the same on all of the STEBI questions. Limitations of the study as well as recommendations for further research were also discussed.
Show less
Date Issued: 2007
Identifier: CFE0001618, ucf:47189
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001618

Title: KNOWLEDGE BASED MEASUREMENT OF ENHANCING BRAIN TISSUE IN ANISOTROPIC MR IMAGERY.
Creator: Leach, Eric, Shah, Mubarak, University of Central Florida
Abstract / Description: Medical Image Analysis has emerged as an important field in the computer vision community. In this thesis, two important issues in medical imaging are addressed and a solution for each is derived and synergistically combined as one coherent system. Firstly, a novel approach is proposed for High Resolution Volume (HRV) construction by combining different frequency components at multiple levels, which are separated by using a multi-resolution pyramid structure. Current clinical imaging...
Show moreMedical Image Analysis has emerged as an important field in the computer vision community. In this thesis, two important issues in medical imaging are addressed and a solution for each is derived and synergistically combined as one coherent system. Firstly, a novel approach is proposed for High Resolution Volume (HRV) construction by combining different frequency components at multiple levels, which are separated by using a multi-resolution pyramid structure. Current clinical imaging protocols make use of multiple orthogonal low resolution scans to measure the size of the tumor. The highly anisotropic data result in difficulty and even errors in tumor assessment. In previous approaches, simple interpolation has been used to construct HRVs from multiple low resolution volumes (LRVs), which fail when large inter-plane spacing is present. In our approach, Laplacian pyramids containing band-pass contents are first computed from registered LRVs. The Laplacian images are expanded in their low resolution axes separately and then fused at each level. A Gaussian pyramid is recovered from the fused Laplacian pyramid, where a volume at the bottom level of the Gaussian pyramid is the constructed HRV. The effectiveness of the proposed approach is validated by using simulated images. The method has also been applied to real clinical data and promising experimental results are demonstrated. Secondly, a new knowledge-based framework to automatically quantify the volume of enhancing tissue in brain MR images is proposed. Our approach provides an objective and consistent way to evaluate disease progression and assess the treatment plan. In our approach, enhanced regions are first located by comparing the difference between the aligned set of pre- and post-contrast T1 MR images. Since some normal tissues may also become enhanced by the administration of Gd-DTPA, using the intensity difference alone may not be able to distinguish normal tissue from the tumor. Thus, we propose a new knowledge-based method employing knowledge of anatomical structures from a probabilistic brain atlas and the prior distribution of brain tumor to identify the real enhancing tissue. Our approach has two main advantages. i) The results are invariant to the image contrast change due to the usage of the probabilistic knowledge-based framework. ii) Using the segmented regions instead of independent pixels facilitates an approach that is much less sensitive to small registration errors and image noise. The obtained results are compared to the ground truth for validation and it is shown that the proposed method can achieve accurate and consistent measurements.
Show less
Date Issued: 2007
Identifier: CFE0001803, ucf:47378
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001803

Title: FAMTILE: AN ALGORITHM FOR LEARNING HIGH-LEVEL TACTICAL BEHAVIOR FROM OBSERVATION.
Creator: Stensrud, Brian, Gonzalez, Avelino, University of Central Florida
Abstract / Description: This research focuses on the learning of a class of behaviors defined as high-level behaviors. High-level behaviors are defined here as behaviors that can be executed using a sequence of identifiable behaviors. Represented by low-level contexts, these behaviors are known a priori to learning and can be modeled separately by a knowledge engineer. The learning task, which is achieved by observing an expert within simulation, then becomes the identification and representation of the low-level...
Show moreThis research focuses on the learning of a class of behaviors defined as high-level behaviors. High-level behaviors are defined here as behaviors that can be executed using a sequence of identifiable behaviors. Represented by low-level contexts, these behaviors are known a priori to learning and can be modeled separately by a knowledge engineer. The learning task, which is achieved by observing an expert within simulation, then becomes the identification and representation of the low-level context sequence executed by the expert. To learn this sequence, this research proposes FAMTILE - the Fuzzy ARTMAP / Template-Based Interpretation Learning Engine. This algorithm attempts to achieve this learning task by constructing rules that govern the low-level context transitions made by the expert. By combining these rules with models for these low-level context behaviors, it is hypothesized that an intelligent model for the expert can be created that can adequately model his behavior. To evaluate FAMTILE, four testing scenarios were developed that attempt to achieve three distinct evaluation goals: assessing the learning capabilities of Fuzzy ARTMAP, evaluating the ability of FAMTILE to correctly predict expert actions and context choices given an observation, and creating a model of the expert's behavior that can perform the high-level task at a comparable level of proficiency.
Show less
Date Issued: 2005
Identifier: CFE0000503, ucf:46455
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000503

Title: GRAPH-THEORETIC APPROACH TO MODELING PROPAGATION AND CONTROL OF NETWORK WORMS.
Creator: Nikoloski, Zoran, Deo, Narsingh, University of Central Florida
Abstract / Description: In today's network-dependent society, cyber attacks with network worms have become the predominant threat to confidentiality, integrity, and availability of network computing resources. Despite ongoing research efforts, there is still no comprehensive network-security solution aimed at controling large-scale worm propagation. The aim of this work is fivefold: (1) Developing an accurate combinatorial model of worm propagation that can facilitate the analysis of worm control strategies, (2)...
Show moreIn today's network-dependent society, cyber attacks with network worms have become the predominant threat to confidentiality, integrity, and availability of network computing resources. Despite ongoing research efforts, there is still no comprehensive network-security solution aimed at controling large-scale worm propagation. The aim of this work is fivefold: (1) Developing an accurate combinatorial model of worm propagation that can facilitate the analysis of worm control strategies, (2) Building an accurate epidemiological model for the propagation of a worm employing local strategies, (3) Devising distributed architecture and algorithms for detection of worm scanning activities, (4) Designing effective control strategies against the worm, and (5) Simulation of the developed models and strategies on large, scale-free graphs representing real-world communication networks. The proposed pair-approximation model uses the information about the network structure--order, size, degree distribution, and transitivity. The empirical study of propagation on large scale-free graphs is in agreement with the theoretical analysis of the proposed pair-approximation model. We, then, describe a natural generalization of the classical cops-and-robbers game--a combinatorial model of worm propagation and control. With the help of this game on graphs, we show that the problem of containing the worm is NP-hard. Six novel near-optimal control strategies are devised: combination of static and dynamic immunization, reactive dynamic and invariant dynamic immunization, soft quarantining, predictive traffic-blocking, and contact-tracing. The analysis of the predictive dynamic traffic-blocking, employing only local information, shows that the worm can be contained so that 40\% of the network nodes are not affected. Finally, we develop the Detection via Distributed Blackholes architecture and algorithm which reflect the propagation strategy used by the worm and the salient properties of the network. Our distributed detection algorithm can detect the worm scanning activity when only 1.5% of the network has been affected by the propagation. The proposed models and algorithms are analyzed with an individual-based simulation of worm propagation on realistic scale-free topologies.
Show less
Date Issued: 2005
Identifier: CFE0000640, ucf:46521
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000640

Title: TRANSFORMING LEARNING INTO A CONSTRUCTIVE COGNITIVE AND METACOGNITIVE ACTIVITY:USE OF A GUIDED LEARNER-GENERATED INSTRUCTIONAL STRATEGY WITHIN COMPUTER-BASED TRAINING.
Creator: Cuevas, Haydee, Bowers, Clint, University of Central Florida
Abstract / Description: This study explored the effectiveness of embedding a guided, learner-generated instructional strategy (query method), designed to support learners' cognitive and metacognitive processes, within the context of a computer-based complex task training environment (i.e., principles of flight in the aviation domain). The queries were presented as "stop and think" exercises in an open-ended question format that asked learners to generate either simple (low-level elaboration) or complex (high-level...
Show moreThis study explored the effectiveness of embedding a guided, learner-generated instructional strategy (query method), designed to support learners' cognitive and metacognitive processes, within the context of a computer-based complex task training environment (i.e., principles of flight in the aviation domain). The queries were presented as "stop and think" exercises in an open-ended question format that asked learners to generate either simple (low-level elaboration) or complex (high-level elaboration) sentences from a list of key training concepts. Results consistently highlighted the benefit of presenting participants with low-level elaboration queries, as compared to the no-query or high-level elaboration queries. In terms of post-training cognitive outcomes, participants presented with the low-level elaboration queries exhibited significantly more accurate knowledge organization (indicated by similarity to an expert model), better acquisition of perceptual knowledge, and superior performance on integrative knowledge assessment involving the integration and application of task-relevant concepts. Consistent with previous studies, no significant differences in performance were found on basic factual knowledge assessment. Presentation of the low-level elaboration queries also significantly improved the training program's instructional efficiency, that is, greater performance was achieved with less perceived cognitive effort. In terms of post-training metacognitive outcomes, participants presented with the low-level elaboration queries exhibited significantly greater metacomprehension accuracy and more effective metacognitive self-regulation during training. Contrary to predictions, incorporating the high-level elaboration queries into the training consistently failed, with only a few exceptions, to produce significantly better post-training outcomes than the no-query or the low-level elaboration query training conditions. The results of this study are discussed in terms of the theoretical implications for garnering a better understanding of the cognitive and metacognitive factors underlying the learning process. Practical implications for training design are presented within the context of cognitive load theory. Specifically, the increased cognitive processing of the training material associated with the high-level elaboration queries may have imposed too great a cognitive load on participants during training, minimizing the cognitive resources available for achieving a deeper, integrative understanding of the training concepts and hindering successful performance on the cognitive measures. The discussion also highlights the need for a multi-faceted approach to training evaluation.
Show less
Date Issued: 2004
Identifier: CFE0000265, ucf:46221
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000265

Title: AN INVESTIGATION OF THE PROFICIENCY LEVEL OF HIGH SCHOOL STUDENTS WITH AUTISM AND MENTAL RETARDATION WITHIN COMMUNITY-BASED JOB SETTINGS: THE RELATIONSHIP BETWEEN THE USE OF A HAND-HELD COMPUTER COMPARED TO STAFF MODELING FOR ACCURATE NOVEL JOB SKILL ACQUISITION AND STUDENT LEARNING.
Creator: Spence-Cochran, Kimberly Genevieve, Ezell and Lee Cross, Dan, University of Central Florida
Abstract / Description: This study examined the effects and efficacy of two vocational instructional interventions - a Hand-Held Computer intervention versus a Staff Model intervention - as vocational instructional tools for high school students with autism and mental retardation. Specifically, the study analyzed the effects of these two treatments on the completion of authentic novel job tasks within a local department store. This research indicated the provision of specific technology as an instructional model...
Show moreThis study examined the effects and efficacy of two vocational instructional interventions - a Hand-Held Computer intervention versus a Staff Model intervention - as vocational instructional tools for high school students with autism and mental retardation. Specifically, the study analyzed the effects of these two treatments on the completion of authentic novel job tasks within a local department store. This research indicated the provision of specific technology as an instructional model positively influenced participants' ability to: accurately complete tasks, exercise increased independence during task completion, reduce problematic behavior during task completion, and lower necessary staff prompts during task completion.The use of technology to support individuals with severe disabilities has the potential to increase their level of independence and accuracy of job completion within community-based settings. Five high school students with autism and mental retardation participated in this study, which compared the use of a palm-top computer with a traditional staff model during the completion of eighteen novel job tasks within various departments of a large department store. Five of eight variables subjected to ANOVA and independent t-test analyses demonstrated significance.
Show less
Date Issued: 2004
Identifier: CFE0000104, ucf:46180
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000104

Title: PEDAGOGY FOR INTERNET-BASED TEACHING AND LEARNINGAND THE IMPACT OF THAT PEDAGOGY ON STUDENT ACHIEVEMENT AND SATISFACTION.
Creator: Kemerait, Janet Perkins, Holt, Larry, University of Central Florida
Abstract / Description: The purpose of this research was to identify appropriate pedagogical practices for Internet-based teaching and learning, determine the status of their use in the community college adjunct instructor's Internet-based classroom, and examine the impact of these practices on student academic achievement and satisfaction. Frequencies, measures of central tendency, percentages, and SPSS Cross Tabulation procedures described and analyzed data from student and instructor surveys to answer these...
Show moreThe purpose of this research was to identify appropriate pedagogical practices for Internet-based teaching and learning, determine the status of their use in the community college adjunct instructor's Internet-based classroom, and examine the impact of these practices on student academic achievement and satisfaction. Frequencies, measures of central tendency, percentages, and SPSS Cross Tabulation procedures described and analyzed data from student and instructor surveys to answer these questions.Internet-based best practice and recommended practice pedagogical methods and strategies were identified through extensive content analysis of the professional literature. Internet-based adjunct instructors at a Central Florida community college rated 43 selected recommended practices. Ratings were based on instructor perceptions of each practice's importance to student academic achievement in and satisfaction with their Internet-based learning experience. Students of community college adjunct instructors also rated these practices for their perceived impact on student academic achievement and satisfaction. Students identified from selected recommended practices the pedagogies that had been designed into the described Internet-based course in which they had been enrolled, providing better understanding of the current use of appropriate Internet-based practice in the instruction of adjunct community college instructors. To examine the impact of the use of those practices, average course scores were related to student-reported presence of practices in described courses and student-reported academic success and satisfaction in described courses was related to the presence of best and recommended practices designed into the course.Results from this study can provide guidance for community college Internet-based programs and for adjunct instructors in those programs as they strive to design and instruct quality courses with appropriate pedagogical focus. Results can also provide local data to the larger discussion of appropriate pedagogy throughout the Internet-based educational community.
Show less
Date Issued: 2004
Identifier: CFE0000110, ucf:46205
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000110

Title: DETECTION AND EVALUATION OF EXISITING PAVEMENT SYSTEM WITH BRICK BASE USING GROUND PENETRATING RADAR.
Creator: Desai, Karishma, Kuo, Shiou-San, University of Central Florida
Abstract / Description: At the turn of the century, the City of Orlando initiated the "Neighborhood Horizon Program." This program involved local citizens to help improve their community resources by engaging in a process of planning where the problems associated with the communities were identified. Many residents favored to bring back the brick roads that were overlaid with asphalt concrete to provided better transportation in the mid 1900s. With majority of the neighborhood streets already bricked, removing...
Show moreAt the turn of the century, the City of Orlando initiated the "Neighborhood Horizon Program." This program involved local citizens to help improve their community resources by engaging in a process of planning where the problems associated with the communities were identified. Many residents favored to bring back the brick roads that were overlaid with asphalt concrete to provided better transportation in the mid 1900s. With majority of the neighborhood streets already bricked, removing asphalt ensured safety, served as a technique for slowing traffic, and added to the historical integrity. Since there were no official documentations available that stated the definite existence of bricks beneath the asphalt surface course, it would have been rather impossible to core hundreds of locations to ensure the whereabouts of these anomalies. Thus, without time delays and excessive coring costs, a nondestructive instrumentation of Ground Penetrating Radar (GPR) was employed in the detection of bricks. This geophysical survey system distinguishes materials based on their different electrical properties that depend upon temperature, density, moisture content and impurities by providing a continuous profile of the subsurface conditions. The Ground Penetrating Radar operates on the principle of the electromagnetic wave (EMW) theory. The main objectives of this study was to investigate the existing pavement by using Ground Penetrating Radar (GPR) in detecting the brick base and to analyze the performance of pavement system for fatigue and rutting. The results of this study will assist the City of Orlando in removing asphalt layer, rebuilding of brick roads, and facilitate in better zoning and planning of the city. The construction of controlled test area provided with a good sense of brick detection, which helped in precise locations bricks for sections of Summerlin Avenue, Church Street and Cherokee Drive. The project demonstrated a good sense of detecting the subsurface anomalies, such as bricks. The validation of the profile readings was near to a 100%.
Show less
Date Issued: 2004
Identifier: CFE0000268, ucf:46230
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000268

Title: ASSESSMENT AND IN VITRO REPAIR OF DAMAGED DNA TEMPLATES FROM FORENSIC STAINS.
Creator: Hall, Ashley, Ballantyne, Jack, University of Central Florida
Abstract / Description: DNA extracted from biological stains is often intractable to analysis. This may due to a number of factors including a low copy number (LCN) of starting molecules, the presence of soluble inhibitors or damaged DNA templates. Remedies may be available to the forensic scientist to deal with LCN templates and soluble inhibitors but none presently exist for damaged DNA. In fact, only recently has the biochemical nature, the extent of DNA damage in physiological stains and the point at which the...
Show moreDNA extracted from biological stains is often intractable to analysis. This may due to a number of factors including a low copy number (LCN) of starting molecules, the presence of soluble inhibitors or damaged DNA templates. Remedies may be available to the forensic scientist to deal with LCN templates and soluble inhibitors but none presently exist for damaged DNA. In fact, only recently has the biochemical nature, the extent of DNA damage in physiological stains and the point at which the damage inflicted upon a particular sample precludes the ability to obtain a genetic profile for purposes of identification been examined. The primary aims of this work were first to ascertain the types of DNA damage encountered in forensically relevant stains, correlating the occurrence this damage with the partial or total loss of a genotype, and then to attempt the repair of the damage by means of in vitro DNA repair systems. The initial focus of the work was the detection of damage caused by exogenous, environmental sources, primarily UV irradiation, but also factors such as heat, humidity and microorganism growth. Results showed that the primary causes of the damage that resulted in profile loss were strand breaks, both single and double stranded, as well as modifications to the DNA structure that inhibited its amplification. Armed with this knowledge, the next focus was the repair of the damage by means of in vitro DNA systems. Efforts have been concentrated on single strand break/gap repair and translesion synthesis assays. By modifying the assays and employing various combinations of the systems, a genetic signature has been recovered from previously intractable samples. Additionally, the effects that various storage conditions have on the DNA in physiological stains stored in a laboratory were examined. The optimal long term storage conditions for biological evidence has been a matter of debate in the forensic community for some time. But, no comprehensive study had previously been undertaken to describe the effects of dehydration and temperature on degradation and the ability to obtain a genetic profile on bloodstains kept in different types of storage media at a range of temperatures. To examine this, bloodstains were either allowed to dry overnight or placed in the storage medium while still wet and were stored at room temperature, 4oC or 30oC for up to four years. Results showed that specimens dehydrated prior to storage were very stable, and these bloodstains showed no degradation or loss of a genetic profile for up to four years.
Show less
Date Issued: 2005
Identifier: CFE0000878, ucf:46647
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000878

Title: SARP NET: A SECURE, ANONYMOUS, REPUTATION-BASED, PEER-TO-PEER NETWORK.
Creator: Mondesire, Sean, Lee, Joohan, University of Central Florida
Abstract / Description: Since the advent of Napster, the idea of peer-to-peer (P2P) architectures being applied to file-sharing applications has become popular, spawning other P2P networks like Gnutella, Morpheus, Kazaa, and BitTorrent. This growth in P2P development has nearly eradicated the idea of the traditional client-server structure in the file-sharing model, now placing emphasizes on faster query processing, deeper levels of decentralism, and methods to protect against copyright law violation. SARP Net is a...
Show moreSince the advent of Napster, the idea of peer-to-peer (P2P) architectures being applied to file-sharing applications has become popular, spawning other P2P networks like Gnutella, Morpheus, Kazaa, and BitTorrent. This growth in P2P development has nearly eradicated the idea of the traditional client-server structure in the file-sharing model, now placing emphasizes on faster query processing, deeper levels of decentralism, and methods to protect against copyright law violation. SARP Net is a secure, anonymous, decentralized, P2P overlay network that is designed to protect the activity of its users in its own file-sharing community. It is secure in the fact that public-key encryption is used to guard eavesdroppers during messages. The protocol guarantees user anonymity by incorporating message hopping from node to node to prevent any network observer from pinpointing the origin of any file query or shared-file source. To further enhance the system's security, a reputation scheme is incorporated to police nodes from malicious activity, maintain the overlay's topology, and enforce rules to protect node identity.
Show less
Date Issued: 2006
Identifier: CFE0001264, ucf:46900
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001264

Title: MICRO-SPECTROSCOPY OF BIO-ASSEMBLIES AT THE SINGLE CELL LEVEL.
Creator: Kera, Jeslin, Chakrabarti, Debopam, Schulte, Alfons, University of Central Florida
Abstract / Description: In this thesis, we investigate biological molecules on a micron scale in the ultraviolet spectral region through the non-destructive confocal absorption microscopy. The setup involves a combination of confocal microscope with a UV light excitation beam to measure the optical absorption spectra with spatial resolution of 1.4 ?m in the lateral and 3.6 ?m in the axial direction. Confocal absorption microscopy has the benefits of requiring no labels and only low light intensity for excitation...
Show moreIn this thesis, we investigate biological molecules on a micron scale in the ultraviolet spectral region through the non-destructive confocal absorption microscopy. The setup involves a combination of confocal microscope with a UV light excitation beam to measure the optical absorption spectra with spatial resolution of 1.4 ?m in the lateral and 3.6 ?m in the axial direction. Confocal absorption microscopy has the benefits of requiring no labels and only low light intensity for excitation while providing a strong signal from the contrast generated by the attenuation of propagating light due to absorption. This enables spatially resolved measurements of single live cells and bio-molecules with less than 10^9 molecules in the probe volume. Employing a multichannel detection system, the absorption spectrum of hemoglobin in a single red blood cell is measured on the timescale of seconds. We also extend the spectral range from the visible range to the experimentally more challenging ultra-violet region where characteristic absorption bands of bio-molecules are observed. Exploiting the ultra-violet range, amino acids, nucleic acids solutions, and plant cells are investigated. We measure the spatially resolved absorption spectra at the nucleus of an onion cell and cytoplasm to probe DNA base-pair absorption. Small variations in our micro-absorption data are seen around 260 nm, possibly due to the abundance of DNA in the nucleus. This thesis contributes to the goal of spectroscopic identification of spatial heterogeneities at the single cell level and the label-free detection of proteins and nucleic acids.
Show less
Date Issued: 2017
Identifier: CFH2000356, ucf:45905
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000356

Title: PROBLEM-BASED LEARNING: MEETING THE COMMON CORE STATE STANDARDS FOR GRADE 9/10 ENGLISH LANGUAGE ARTS.
Creator: Millard, Michelle, Kaplan, Dr. Jeffery, University of Central Florida
Abstract / Description: The purpose of this project design Problem- Based Learning (PBL) Units that would meet the Common Core State Standards (CCSS) for a 9/10 grade English Language Arts (ELA) classroom. The CCSS, newly adopted into Florida public schools, were created to provide students with the skills necessary to be successful in both higher education and ultimately, the global economy. PBL has been practiced in some of the country's leading medical schools for decades, and recently, has begun to play a...
Show moreThe purpose of this project design Problem- Based Learning (PBL) Units that would meet the Common Core State Standards (CCSS) for a 9/10 grade English Language Arts (ELA) classroom. The CCSS, newly adopted into Florida public schools, were created to provide students with the skills necessary to be successful in both higher education and ultimately, the global economy. PBL has been practiced in some of the country's leading medical schools for decades, and recently, has begun to play a leading role in designing math and science curricula. Until now, few attempts have been made incorporating the structures of Problem- Based Learning into the secondary English Language Arts classroom. My intention in tapping PBL was to utilize a tool that would foster critical thinking skills and create real world relevance in the curriculum for my future ELA students. With the ever increasing shift into a more inquiry- based teaching approach in today's schools, these units will not only meet the CCSS, but they will provide real world application in both research and collaborative learning. PBL utilizes an "ill-structured scenario" that provides the student with a role that gives them ownership into solving a problem (Lambros, 2004). In order to create these scenarios, I examined the 9/10 Grade exemplars offered throughout the CCSS. I then used the CCSS to identify which standards would be met by each unit. I also evaluated the Brevard County District calendar to identify the constraints on time that a teacher might typically encounter in the classroom. The result is four PBL units that meet the CCSS for Grade 9/10 English Language Arts. I developed these units with the idea that they would be the main methods of instruction in an ELA classroom and therefore provided time frames for each unit to be completed. The time frames account for research, project completion and presentation. Each of these four units use the exemplar texts outlined by CCSS and highlight four different genres in Literature: Fiction, Nonfiction, Poetry, and Drama.
Show less
Date Issued: 2013
Identifier: CFH0004397, ucf:45004
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0004397

Title: A THEORY OF COMPLEX ADAPTIVE INQUIRING ORGANIZATIONS: APPLICATION TO CONTINUOUS ASSURANCE OF CORPORATE FINANCIAL INFORMATION.
Creator: Kuhn, John, Cheney, Paul, University of Central Florida
Abstract / Description: Drawing upon the theories of complexity and complex adaptive systems and the Singerian Inquiring System from C. West Churchman's seminal work The Design of Inquiring Systems the dissertation herein develops a systems design theory for continuous auditing systems. The dissertation consists of discussion of the two foundational theories, development of the Theory of Complex Adaptive Inquiring Organizations (CAIO) and associated design principles for a continuous auditing system supporting a...
Show moreDrawing upon the theories of complexity and complex adaptive systems and the Singerian Inquiring System from C. West Churchman's seminal work The Design of Inquiring Systems the dissertation herein develops a systems design theory for continuous auditing systems. The dissertation consists of discussion of the two foundational theories, development of the Theory of Complex Adaptive Inquiring Organizations (CAIO) and associated design principles for a continuous auditing system supporting a CAIO, and instantiation of the CAIO theory. The instantiation consists of an agent-based model depicting the marketplace for Frontier Airlines that generates an anticipated market share used as an integral component in a mock auditor going concern opinion for the airline. As a whole, the dissertation addresses the lack of an underlying system design theory and comprehensive view needed to build upon and advance the continuous assurance movement and addresses the question of how continuous auditing systems should be designed to produce knowledge – knowledge that benefits auditors, clients, and society as a whole.
Show less
Date Issued: 2009
Identifier: CFE0002848, ucf:48052
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002848

Title: THE IMPACT OF A NURSE-DRIVEN EVIDENCE-BASED DISCHARGE PLANNING PROTOCOL ON ORGANIZATIONAL EFFICIENCY AND PATIENT SATISFACTION IN PATIENTS WITH CARDIAC IMPLANTS.
Creator: King, Tracey, Sole, Mary Lou, University of Central Florida
Abstract / Description: Purpose: Healthcare organizations are mandated to improve quality and safety for patients while stressed with shorter lengths of stay, communication lapses between disciplines, and patient throughput issues that impede timely delivery of patient care. Nurses play a prominent role in the safe transition of patients from admission to discharge. Although nurses participate in discharge planning, limited research has addressed the role and outcomes of the registered nurse as a leader in the...
Show morePurpose: Healthcare organizations are mandated to improve quality and safety for patients while stressed with shorter lengths of stay, communication lapses between disciplines, and patient throughput issues that impede timely delivery of patient care. Nurses play a prominent role in the safe transition of patients from admission to discharge. Although nurses participate in discharge planning, limited research has addressed the role and outcomes of the registered nurse as a leader in the process. The aim of this study was determine if implementation of a nurse-driven discharge planning protocol for patients undergoing cardiac implant would result in improved organizational efficiencies, higher medication reconciliation rates, and higher patient satisfaction scores. Methods: A two-group posttest experimental design was used to conduct the study. Informed consent was obtained from 53 individuals scheduled for a cardiac implant procedure. Subjects were randomly assigned to either a nurse-driven discharge planning intervention group or a control group. Post procedure, 46 subjects met inclusion criteria with half (n=23) assigned to each group. All subjects received traditional discharge planning services. The morning after the cardiac implant procedure, a specially trained registered nurse assessed subjects in the intervention for discharge readiness. Subjects in the intervention groups were then discharged under protocol orders by the intervention nurse after targeted physical assessment, review of the post procedure chest radiograph, and examination of the cardiac implant device function. The intervention nurse also provided patient education, discharge instructions, and conducted medication reconciliation. The day after discharge the principal investigator conducted a scripted follow-up phone call to answer questions and monitor for post procedure complications. A Hospital Discharge Survey was administered during the subject's follow-up appointment. Results: The majority of subjects were men, Caucasian, insured, and educated at the high school level or higher. Their average age was 73.5+ 9.8 years. No significant differences between groups were noted for gender, type of insurance, education, or type of cardiac implant (chi-square); or age (t-test). A Mann-Whitney U test (one-tailed) found no significant difference in variable cost per case (p=.437) and actual charges (p=.403) between the intervention and control groups. Significant differences were found between groups for discharge satisfaction (p=.05) and the discharge perception of overall health (p=.02), with those in the intervention group reporting higher scores. Chi square analysis found no significant difference in 30-day readmission rates (p=.520). Using an independent samples t-test, those in the intervention group were discharged earlier (p=.000), had a lower length of stay (p=.005), and had higher rates of reconciled medications (p=.000). The odds of having all medications reconciled were significantly higher in the intervention group (odds ratio, 50.27; 95% CI, 5.62-450.2; p=.000). Discussion/Implications: This is the first study to evaluate the role of the nurse as a clinical leader in patient throughput, discharge planning, and patient safety initiatives. A nurse driven discharge planning protocol resulted in earlier discharge times which can have a dramatic impact on patient throughput. The nurse driven protocol significantly reduced the likelihood of unreconciled medications at discharge and significantly increased patient satisfaction. Follow-up research is needed to determine if a registered nurse can impact organizational efficiency and discharge safety in other patient populations.
Show less
Date Issued: 2008
Identifier: CFE0002188, ucf:47915
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002188

Title: MULTIMEDIA COMPUTER-BASED TRAINING AND LEARNING: THE ROLE OF REFERENTIAL CONNECTIONS IN SUPPORTING COGNITIVE LEARNING OUTCOMES.
Creator: Scielzo, Sandro, Jentsch, Florian, University of Central Florida
Abstract / Description: Multimedia theory has generated a number of principles and guidelines to support computer-based training (CBT) design. However, the cognitive processes responsible for learning, from which these principles and guidelines stem from, are only indirectly derived by focusing on cognitive learning outcome differences. Unfortunately, the effects that cognitive processes have on learning are based on the assumption that cognitive learning outcomes are indicative of certain cognitive processes. Such...
Show moreMultimedia theory has generated a number of principles and guidelines to support computer-based training (CBT) design. However, the cognitive processes responsible for learning, from which these principles and guidelines stem from, are only indirectly derived by focusing on cognitive learning outcome differences. Unfortunately, the effects that cognitive processes have on learning are based on the assumption that cognitive learning outcomes are indicative of certain cognitive processes. Such circular reasoning is what prompted this dissertation. Specifically, this dissertation looked at the notion of referential connections, which is a prevalent cognitive process that is thought to support knowledge acquisition in a multimedia CBT environment. Referential connections, and the related cognitive mechanisms supporting them, are responsible for creating associations between verbal and visual information; as a result, their impact on multimedia learning is theorized to be far reaching. Therefore, one of the main goals of this dissertation was to address the issue of indirectly assessing cognitive processes by directly measuring referential connections to (a) verify the presence of referential connections, and (b) to measure the extent to which referential connections affect cognitive learning outcomes. To achieve this goal, a complete review of the prevalent multimedia theories was brought fourth. The most important factors thought to be influencing referential connections were extracted and cataloged into variables that were manipulated, fixed, covaried, or randomized to empirically examine the link between referential connections and learning. Specifically, this dissertation manipulated referential connections by varying the temporal presentation of modalities and the color coding of instructional material. Manipulating the temporal presentation of modalities was achieved by either presenting modalities simultaneously or sequentially. Color coding manipulations capitalized on pre-attentive highlighting and pairing of elements (i.e., pairing text with corresponding visuals). As such, the computer-based training varied color coding on three levels: absence of color coding, color coding without pairing text and corresponding visual aids, and color coding that also paired text and corresponding visual aids. The modalities employed in the experiment were written text and static visual aids, and the computer-based training taught the principles of flight to naïve participants. Furthermore, verbal and spatial aptitudes were used as covariates, as they consistently showed to affect learning. Overall, the manipulations were hypothesized to differentially affect referential connections and cognitive learning outcomes, thereby altering cognitive learning outcomes. Specifically, training with simultaneously presented modalities was hypothesized to be superior, in terms of referential connections and learning performance, to a successive presentation, and color coding modalities with pairing of verbal and visual correspondents was hypothesized to be superior to other forms of color coding. Finally, it was also hypothesized that referential connections would positively correlate with cognitive learning outcomes and, indeed, mediate the effects of temporal contiguity and color coding on learning. A total of 96 were randomly assigned to one of the six experimental groups, and were trained on the principles of flight. The key construct of referential connections was successfully measured with three methods. Cognitive learning outcomes were captured by a traditional declarative test and by two integrative (i.e., knowledge application) tests. Results showed that the two multimedia manipulation impacted cognitive learning outcomes and did so through corresponding changes of related referential connections (i.e., through mediation). Specifically, as predicted, referential connections mediated the impact of both temporal contiguity and color coding on lower- and higher-level cognitive learning outcomes. Theoretical and practical implications of the results are discussed in relation to computer-based training design principles and guidelines. Specifically, theoretical implications focus on the contribution that referential connections have on multimedia learning theory, and practical implications are brought forth in terms of instructional design issues. Future research considerations are described as they relate to further exploring the role of referential connections within multimedia CBT paradigms.
Show less
Date Issued: 2008
Identifier: CFE0002224, ucf:47899
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002224

Title: IMPLEMENTATION AND EVALUATION OF A CLASSROOM-BASED APPROACH TO EXPECTANCY CHALLENGE FOR REDUCING ALCOHOL USE AMONG FIRST-YEAR COLLEGE STUDENTS.
Creator: Sivasithamparam, Janani, Dunn, Michael, University of Central Florida
Abstract / Description: There is a pervasive belief in the United States that the college experience typically includes frequent social activities characterized by widespread alcohol use. Unfortunately, awareness of the hundreds of deaths and wide variety of other harms experienced by college students as a result of alcohol use is much less pervasive. In an effort to increase awareness of the negative impact of alcohol use on college campuses, the NIAAA commissioned a panel composed of scientists and college...
Show moreThere is a pervasive belief in the United States that the college experience typically includes frequent social activities characterized by widespread alcohol use. Unfortunately, awareness of the hundreds of deaths and wide variety of other harms experienced by college students as a result of alcohol use is much less pervasive. In an effort to increase awareness of the negative impact of alcohol use on college campuses, the NIAAA commissioned a panel composed of scientists and college presidents to document alcohol-related harms and identify strategies that have been found to be effective in reducing risky alcohol use based on empirical evidence. The final report of this expert panel was released as a "Call to Action" for institutions nationwide in an effort to increase understanding of the severity and prevalence of risky alcohol use, and to provide descriptions of programs that were considered effective based on empirical evidence. Unfortunately, there were very few strategies found to be effective, and one of the effective approaches could only be implemented in specialized laboratories operated by scientists with expertise in expectancy challenge. Due to the severity and pervasiveness of the college alcohol problem and the limited number of strategies deemed effective, there is clearly a pressing need to develop and validate an expectancy challenge method that could be implemented by any institution without being limited by the need for a specialized laboratory and highly trained personnel. Achievement of these goals was the focus of the present project. To this end, an expectancy challenge curriculum designed for delivery in a college classroom was developed based on a laboratory delivered protocol previously found to be effective in reducing alcohol use among college students, and a classroom delivered curriculum previously found to be effective with high school students. The newly developed college classroom curriculum was implemented in a single session with groups of students during their regular class time in their usual classroom. Measures of alcohol use and associated harms were completed anonymously by each participant before completing the curriculum and for the month following completion of the curriculum. Analyses indicated significant reductions in alcohol consumption among males and females in comparison to students who were randomly assigned to a wait-list control condition. Unfortunately, significant reductions in alcohol-related harms were not found. The time periods for baseline and follow-up were only one month each, and that limitation in the number of opportunities to experience harms limits the likelihood of demonstrating a significant reduction in harms as well. Overall, this project represents an important advance in the development of alcohol use reduction strategies that are theory-based and effective in reducing alcohol use based on empirical evidence. In addition, the curriculum that was developed and validated in this project represents the first expectancy challenge method that can be readily implemented at any institution willing to devote one hour to reducing their students' risk for a long list of negative consequences associated with alcohol use on college campuses. Motivation and a typical classroom are all that is needed.
Show less
Date Issued: 2008
Identifier: CFE0002307, ucf:47854
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002307

Simulation (6)	+ -
professional development (5)	+ -
simulation (5)	+ -
System Dynamics (4)	+ -
education (4)	+ -

faith-based (4)	+ -
Communication (3)	+ -
Feedback (3)	+ -
Game-Based Training (3)	+ -
Instructional Strategies (3)	+ -
agent-based modeling (3)	+ -
autism (3)	+ -
computer-based training (3)	+ -
higher education (3)	+ -
metacognition (3)	+ -
special education (3)	+ -
Access (2)	+ -
Agent Based Modeling (2)	+ -
Agent Based Simulation (2)	+ -
Agent-Based (2)	+ -
Artificial Intelligence (2)	+ -
Augmented Reality (2)	+ -
COVIS (2)	+ -
Cognitive Load Theory (2)	+ -
Collaboration (2)	+ -
Computer-based Training (2)	+ -
Context-based Reasoning (2)	+ -
Destination Choice (2)	+ -
Evidence-Based Practices (2)	+ -
Genetic Programming (2)	+ -

ETD Collection (209)	+ -
Honors Collection (17)	+ -
UCF Florida Heritage (1)	+ -

12095 (1)	+ -
Florida (1)	+ -
Orange (1)	+ -

periodical (1)	+ -
text (1)	+ -

Search In

Pages

Pages

Sort Results By:

Narrow results by:

Topical Subject

Collection

Geographic Subject

Genre

Type of Resource

Language

Creator

Format

Owner

English (226)	+ -
Engilsh (1)	+ -
eng (1)	+ -

Document (PDF) (226)	+ -
E-book (1)	+ -