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(1 - 20 of 20)
- Title
- A Contextual Approach to Real Time, Interactive Narrative Generation.
- Creator
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Hollister, James, Richie, Samuel, Weeks, Arthur, Wanielista, Martin, University of Central Florida
- Abstract / Description
-
Oral story telling has become a lost art of family histories because social media and technology have taken over the personal interactions that once passed on the important stories and facts from generation to generation. This dissertation presents and evaluates a method of generating a narrative with input from the listener without actually forcing him or her to become an actual character in the narrative. This system is called CAMPFIRE Story Telling System (STS) and employs a contextual...
Show moreOral story telling has become a lost art of family histories because social media and technology have taken over the personal interactions that once passed on the important stories and facts from generation to generation. This dissertation presents and evaluates a method of generating a narrative with input from the listener without actually forcing him or her to become an actual character in the narrative. This system is called CAMPFIRE Story Telling System (STS) and employs a contextual approach to story generation. This system uses the Cooperating Context Method (CCM) to generate and tell dynamic stories in real time and can be modified by the listener. CCM was created to overcome the weaknesses found in other contextual approaches during story generation while still meeting the design criteria of 1) being able to plan out a story; 2) being able to create a narrative that is entertaining to the listener; and 3) being able to modify the story that could incorporate the listener's request in the story. The CCM process begins by creating a list of tasks by analyzing the current situation. A list of contexts is narrowed down through a series of algorithms into two lists: high priority and low priority lists. These lists are analyzed and a set of context best suited to handle the tasks are selected. The CAMPFIRE STS was rigorously assessed for its functionality, novelty, and user acceptance as well as the time needed to modify the knowledge base. These evaluations showed that the CAMPFIRE STS has the ability to create novel stories using the same knowledge base. A group of 38 test subjects used and evaluated CAMPFIRE STS with respect to its use for children, story entertainment, story creativity and the system's ease of use answering a extensive survey of 54 questions. The survey showed that CAMPFIRE STS can create stories appropriate for bedtime stories with some minor modifications and that the generated stories are novel and entertaining stories, and that it was an easy system to use.
Show less - Date Issued
- 2016
- Identifier
- CFE0006687, ucf:51923
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006687
- Title
- Influence of using context supportive of the area model on sixth grade students' performance when writing word problems for fraction subtraction and multiplication.
- Creator
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Friske, Monica, Dixon, Juli, Andreasen, Janet, Ortiz, Enrique, University of Central Florida
- Abstract / Description
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The purpose of this action research study was to evaluate my own practice of teaching writing word problems with fraction subtraction and fraction multiplication using appropriate context. I wanted to see how focusing my instruction on the use of the area model and manipulatives could develop students' understanding of fractions when writing word problems. I chose this topic because Florida has adopted the Common Core State Standards and will be implementing them in the coming years. These...
Show moreThe purpose of this action research study was to evaluate my own practice of teaching writing word problems with fraction subtraction and fraction multiplication using appropriate context. I wanted to see how focusing my instruction on the use of the area model and manipulatives could develop students' understanding of fractions when writing word problems. I chose this topic because Florida has adopted the Common Core State Standards and will be implementing them in the coming years. These standards encourage the development of deeper understanding of mathematics, including fractions. I hoped this research would give my students the opportunity to make sense of fraction subtraction and fraction multiplication word problems on a deeper level, while giving me insight into my own practice in teaching context within word problems. Through this study, I learned that my students continued to switch the context of subtraction with multiplication within word problems. Students did make clear gains in their writing of fraction subtraction and fraction multiplication word problems. Although there is a limited amount of research on students mixing their context within fraction word problems, this study offers additional insight into a teacher's practice with writing fraction word problems.
Show less - Date Issued
- 2011
- Identifier
- CFE0004111, ucf:49112
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004111
- Title
- SEMANTIC VIDEO RETRIEVAL USING HIGH LEVEL CONTEXT.
- Creator
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Aytar, Yusuf, Shah, Mubarak, University of Central Florida
- Abstract / Description
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Video retrieval – searching and retrieving videos relevant to a user defined query – is one of the most popular topics in both real life applications and multimedia research. This thesis employs concepts from Natural Language Understanding in solving the video retrieval problem. Our main contribution is the utilization of the semantic word similarity measures for video retrieval through the trained concept detectors, and the visual co-occurrence relations between such concepts. We...
Show moreVideo retrieval – searching and retrieving videos relevant to a user defined query – is one of the most popular topics in both real life applications and multimedia research. This thesis employs concepts from Natural Language Understanding in solving the video retrieval problem. Our main contribution is the utilization of the semantic word similarity measures for video retrieval through the trained concept detectors, and the visual co-occurrence relations between such concepts. We propose two methods for content-based retrieval of videos: (1) A method for retrieving a new concept (a concept which is not known to the system and no annotation is available) using semantic word similarity and visual co-occurrence, which is an unsupervised method. (2) A method for retrieval of videos based on their relevance to a user defined text query using the semantic word similarity and visual content of videos. For evaluation purposes, we mainly used the automatic search and the high level feature extraction test set of TRECVID'06 and TRECVID'07 benchmarks. These two data sets consist of 250 hours of multilingual news video captured from American, Arabic, German and Chinese TV channels. Although our method for retrieving a new concept is an unsupervised method, it outperforms the trained concept detectors (which are supervised) on 7 out of 20 test concepts, and overall it performs very close to the trained detectors. On the other hand, our visual content based semantic retrieval method performs more than 100% better than the text-based retrieval method. This shows that using visual content alone we can have significantly good retrieval results.
Show less - Date Issued
- 2008
- Identifier
- CFE0002158, ucf:47521
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002158
- Title
- COLLABORATIVE CONTEXT-BASED REASONING.
- Creator
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Barrett, Gilbert, Gonzalez, Avelino, University of Central Florida
- Abstract / Description
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This dissertation explores modeling collaborative behavior, based on Joint Intentions Theory (JIT), in Context-Based Reasoning (CxBR). Context-Based Reasoning is one of several contextual reasoning paradigms. And, Joint Intentions Theory is the definitive semantic framework for collaborative behaviors. In order to formalize collaborative behaviors in CxBR based on JIT, CxBR is first described in terms of the more popular Belief, Desire, and Intention (BDI) model. Once this description is...
Show moreThis dissertation explores modeling collaborative behavior, based on Joint Intentions Theory (JIT), in Context-Based Reasoning (CxBR). Context-Based Reasoning is one of several contextual reasoning paradigms. And, Joint Intentions Theory is the definitive semantic framework for collaborative behaviors. In order to formalize collaborative behaviors in CxBR based on JIT, CxBR is first described in terms of the more popular Belief, Desire, and Intention (BDI) model. Once this description is established JIT is used as a basis for the formalism for collaborative behavior in CxBR. The hypothesis of this dissertation is that this formalism allows for effective collaborative behaviors in CxBR. Additionally, it is also hypothesized that CxBR agents inferring intention from explicitly communicating Contexts allows for more efficient modeling of collaborative behaviors than inferring intention from situational awareness. Four prototypes are built and evaluated to test the hypothesis and the evaluations are favorable. Effective collaboration is demonstrated through cognitive task analysis and through metrics based on JIT definitions. Efficiency is shown through software metric evaluations for volume and complexity of code.
Show less - Date Issued
- 2007
- Identifier
- CFE0001667, ucf:47198
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001667
- Title
- AUTOMATED SCENARIO GENERATION SYSTEM IN A SIMULATION.
- Creator
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Tomizawa, Hajime, Gonzalez, Avelino, University of Central Florida
- Abstract / Description
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Developing training scenarios that induce a trainee to utilize specific skills is one of the facets of simulation-based training that requires significant effort. Simulation-based training systems have become more complex in recent years. Because of this added complexity, the amount of effort required to generate and maintain training scenarios has increased. This thesis describes an investigation into automating the scenario generation process. The Automated Scenario Generation System (ASGS)...
Show moreDeveloping training scenarios that induce a trainee to utilize specific skills is one of the facets of simulation-based training that requires significant effort. Simulation-based training systems have become more complex in recent years. Because of this added complexity, the amount of effort required to generate and maintain training scenarios has increased. This thesis describes an investigation into automating the scenario generation process. The Automated Scenario Generation System (ASGS) generates expected action flow as contexts in chronological order from several events and tasks with estimated time for the entire training mission. When the training objectives and conditions are defined, the ASGS will automatically generate a scenario, with some randomization to ensure no two equivalent scenarios are identical. This makes it possible to train different groups of trainees sequentially who may have the same level or training objectives without using a single scenario repeatedly. The thesis describes the prototype ASGS and the evaluation results are described and discussed. SVSTM Desktop is used as the development infrastructure for ASGS as prototype training system.
Show less - Date Issued
- 2006
- Identifier
- CFE0001336, ucf:47002
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001336
- Title
- EXPLANATIONS IN CONTEXTUAL GRAPHS:A SOLUTION TO ACCOUNTABILITY INKNOWLEDGE BASED SYSTEMS.
- Creator
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Sherwell, Brian, Gonzalez, Avelino, University of Central Florida
- Abstract / Description
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In order for intelligent systems to be a viable and utilized tool, a user must be able to understand how the system comes to a decision. Without understanding how the system arrived at an answer, a user will be less likely to trust its decision. One way to increase a user's understanding of how the system functions is by employing explanations to account for the output produced. There have been attempts to explain intelligent systems over the past three decades. However, each attempt has had...
Show moreIn order for intelligent systems to be a viable and utilized tool, a user must be able to understand how the system comes to a decision. Without understanding how the system arrived at an answer, a user will be less likely to trust its decision. One way to increase a user's understanding of how the system functions is by employing explanations to account for the output produced. There have been attempts to explain intelligent systems over the past three decades. However, each attempt has had shortcomings that separated the logic used to produce the output and that used to produce the explanation. By using the representational paradigm of Contextual Graphs, it is proposed that explanations can be produced to overcome these shortcomings. Two different temporal forms of explanations are proposed, a pre-explanation and a post-explanation. The pre-explanation is intended to help the user understand the decision making process. The post-explanation is intended to help the user understand how the system arrived at a final decision. Both explanations are intended to help the user gain a greater understanding of the logic used to compute the system's output, and thereby enhance the system's credibility and utility. A prototype system is constructed to be used as a decision support tool in a National Science Foundation research program. The researcher has spent the last year at the NSF collecting the knowledge implemented in the prototype system.
Show less - Date Issued
- 2005
- Identifier
- CFE0000713, ucf:46601
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000713
- Title
- Context-Centric Affect Recognition From Paralinguistic Features of Speech.
- Creator
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Marpaung, Andreas, Gonzalez, Avelino, DeMara, Ronald, Sukthankar, Gita, Wu, Annie, Lisetti, Christine, University of Central Florida
- Abstract / Description
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As the field of affect recognition has progressed, many researchers have shifted from having unimodal approaches to multimodal ones. In particular, the trends in paralinguistic speech affect recognition domain have been to integrate other modalities such as facial expression, body posture, gait, and linguistic speech. Our work focuses on integrating contextual knowledge into paralinguistic speech affect recognition. We hypothesize that a framework to recognize affect through paralinguistic...
Show moreAs the field of affect recognition has progressed, many researchers have shifted from having unimodal approaches to multimodal ones. In particular, the trends in paralinguistic speech affect recognition domain have been to integrate other modalities such as facial expression, body posture, gait, and linguistic speech. Our work focuses on integrating contextual knowledge into paralinguistic speech affect recognition. We hypothesize that a framework to recognize affect through paralinguistic features of speech can improve its performance by integrating relevant contextual knowledge. This dissertation describes our research to integrate contextual knowledge into the paralinguistic affect recognition process from acoustic features of speech. We conceived, built, and tested a two-phased system called the Context-Based Paralinguistic Affect Recognition System (CxBPARS). The first phase of this system is context-free and uses the AdaBoost classifier that applies data on the acoustic pitch, jitter, shimmer, Harmonics-to-Noise Ratio (HNR), and the Noise-to-Harmonics Ratio (NHR) to make an initial judgment about the emotion most likely exhibited by the human elicitor. The second phase then adds context modeling to improve upon the context-free classifications from phase I. CxBPARS was inspired by a human subject study performed as part of this work where test subjects were asked to classify an elicitor's emotion strictly from paralinguistic sounds, and then subsequently provided with contextual information to improve their selections. CxBPARS was rigorously tested and found to, at the worst case, improve the success rate from the state-of-the-art's 42% to 53%.
Show less - Date Issued
- 2019
- Identifier
- CFE0007836, ucf:52831
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007836
- Title
- CONTEXTUALIZING OBSERVATIONAL DATA FOR MODELING HUMAN PERFORMANCE.
- Creator
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Trinh, Viet, Gonzalez, Avelino, University of Central Florida
- Abstract / Description
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This research focuses on the ability to contextualize observed human behaviors in efforts to automate the process of tactical human performance modeling through learning from observations. This effort to contextualize human behavior is aimed at minimizing the role and involvement of the knowledge engineers required in building intelligent Context-based Reasoning (CxBR) agents. More specifically, the goal is to automatically discover the context in which a human actor is situated when...
Show moreThis research focuses on the ability to contextualize observed human behaviors in efforts to automate the process of tactical human performance modeling through learning from observations. This effort to contextualize human behavior is aimed at minimizing the role and involvement of the knowledge engineers required in building intelligent Context-based Reasoning (CxBR) agents. More specifically, the goal is to automatically discover the context in which a human actor is situated when performing a mission to facilitate the learning of such CxBR models. This research is derived from the contextualization problem left behind in Fernlund's research on using the Genetic Context Learner (GenCL) to model CxBR agents from observed human performance [Fernlund, 2004]. To accomplish the process of context discovery, this research proposes two contextualization algorithms: Contextualized Fuzzy ART (CFA) and Context Partitioning and Clustering (COPAC). The former is a more naive approach utilizing the well known Fuzzy ART strategy while the latter is a robust algorithm developed on the principles of CxBR. Using Fernlund's original five drivers, the CFA and COPAC algorithms were tested and evaluated on their ability to effectively contextualize each driver's individualized set of behaviors into well-formed and meaningful context bases as well as generating high-fidelity agents through the integration with Fernlund's GenCL algorithm. The resultant set of agents was able to capture and generalized each driver's individualized behaviors.
Show less - Date Issued
- 2009
- Identifier
- CFE0002563, ucf:48253
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002563
- Title
- EVOLVING MODELS FROM OBSERVED HUMAN PERFORMANCE.
- Creator
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Fernlund, Hans Karl Gustav, Gonzalez, Avelino J., University of Central Florida
- Abstract / Description
-
To create a realistic environment, many simulations require simulated agents with human behavior patterns. Manually creating such agents with realistic behavior is often a tedious and time-consuming task. This dissertation describes a new approach that automatically builds human behavior models for simulated agents by observing human performance. The research described in this dissertation synergistically combines Context-Based Reasoning, a paradigm especially developed to model tactical...
Show moreTo create a realistic environment, many simulations require simulated agents with human behavior patterns. Manually creating such agents with realistic behavior is often a tedious and time-consuming task. This dissertation describes a new approach that automatically builds human behavior models for simulated agents by observing human performance. The research described in this dissertation synergistically combines Context-Based Reasoning, a paradigm especially developed to model tactical human performance within simulated agents, with Genetic Programming, a machine learning algorithm to construct the behavior knowledge in accordance to the paradigm. This synergistic combination of well-documented AI methodologies has resulted in a new algorithm that effectively and automatically builds simulated agents with human behavior. This algorithm was tested extensively with five different simulated agents created by observing the performance of five humans driving an automobile simulator. The agents show not only the ability/capability to automatically learn and generalize the behavior of the human observed, but they also capture some of the personal behavior patterns observed among the five humans. Furthermore, the agents exhibited a performance that was at least as good as agents developed manually by a knowledgeable engineer.
Show less - Date Issued
- 2004
- Identifier
- CFE0000013, ucf:46068
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000013
- Title
- A REINFORCEMENT LEARNING TECHNIQUE FOR ENHANCING HUMAN BEHAVIOR MODELS IN A CONTEXT-BASED ARCHITECTURE.
- Creator
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Aihe, David, Gonzalez, Avelino, University of Central Florida
- Abstract / Description
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A reinforcement-learning technique for enhancing human behavior models in a context-based learning architecture is presented. Prior to the introduction of this technique, human models built and developed in a Context-Based reasoning framework lacked learning capabilities. As such, their performance and quality of behavior was always limited by what the subject matter expert whose knowledge is modeled was able to articulate or demonstrate. Results from experiments performed show that subject...
Show moreA reinforcement-learning technique for enhancing human behavior models in a context-based learning architecture is presented. Prior to the introduction of this technique, human models built and developed in a Context-Based reasoning framework lacked learning capabilities. As such, their performance and quality of behavior was always limited by what the subject matter expert whose knowledge is modeled was able to articulate or demonstrate. Results from experiments performed show that subject matter experts are prone to making errors and at times they lack information on situations that are inherently necessary for the human models to behave appropriately and optimally in those situations. The benefits of the technique presented is two fold; 1) It shows how human models built in a context-based framework can be modified to correctly reflect the knowledge learnt in a simulator; and 2) It presents a way for subject matter experts to verify and validate the knowledge they share. The results obtained from this research show that behavior models built in a context-based framework can be enhanced by learning and reflecting the constraints in the environment. From the results obtained, it was shown that after the models are enhanced, the agents performed better based on the metrics evaluated. Furthermore, after learning, the agent was shown to recognize unknown situations and behave appropriately in previously unknown situations. The overall performance and quality of behavior of the agent improved significantly.
Show less - Date Issued
- 2008
- Identifier
- CFE0002466, ucf:47715
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002466
- Title
- CONTEXT-DRIVEN AGENTS IN COMPUTER SUPPORTED COOPERATIVE WORKS.
- Creator
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Lichtman, Brian, Gonzalez, Avelino, University of Central Florida
- Abstract / Description
-
This thesis describes a research project that investigates the level of contextualization needed to successfully build context-driven agents that can manage a cooperative project. Many times in industry, collaborators in a large project may be located vast distances from each other. It is for this reason that management of such projects can often be difficult. The purpose of this research is to design an agent that can take on the role of a project manager (PM) to assist the human project...
Show moreThis thesis describes a research project that investigates the level of contextualization needed to successfully build context-driven agents that can manage a cooperative project. Many times in industry, collaborators in a large project may be located vast distances from each other. It is for this reason that management of such projects can often be difficult. The purpose of this research is to design an agent that can take on the role of a project manager (PM) to assist the human project manager. Specifically, this thesis looks to give such project management agents full situational awareness. It is hypothesized that only with situational awareness can an agent successfully act in the role of a project manager. This thesis describes the investigation into the use of Context-Based Reasoning and Contextual Graphs to create an agent with such situational awareness. This thesis shows that with enough situational awareness, an agent will have the ability to successfully take on the role of a project manager. In particular, this thesis looks at a PM-agent that can manage a simulated project to design and construct a small sounding rocket.
Show less - Date Issued
- 2011
- Identifier
- CFH0004113, ucf:44871
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004113
- Title
- DESIGNING FOR A JAPANESE HIGH-CONTEXT CULTURE: CULTURE'S INFLUENCE ON THE TECHNICAL WRITER'S VISUAL RHETORIC.
- Creator
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Carpenter, Russell, Flammia, Madelyn, University of Central Florida
- Abstract / Description
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This thesis analyzes the challenges technical writers face when designing documents for high-context cultures, such as the Japanese. When developing documents intended to cross cultural gulfs, technical writers must take into consideration cultural expectations, preferences, and practices in document design and communication. High-context cultures, such as Japan, design documents using drastically different design strategies than those used in the United States. Japanese communication habits...
Show moreThis thesis analyzes the challenges technical writers face when designing documents for high-context cultures, such as the Japanese. When developing documents intended to cross cultural gulfs, technical writers must take into consideration cultural expectations, preferences, and practices in document design and communication. High-context cultures, such as Japan, design documents using drastically different design strategies than those used in the United States. Japanese communication habits are more ambiguous than communication in the United States. Thus, the Japanese often use visuals for their aesthetic appeal, not for their ability to complement the text that surrounds the visual. The ambiguous nature of high-context culture communication habits often pose problems when Americans try to communicate--whether through written or oral communication--with a high-context audience. Without careful analysis and research into these cultural implications, the technical writer risks developing unsuccessful documents that do not accomplish the goals of the communication. It takes years of research to understand cultural differences, especially in the case of Japanese communication habits. With the research presented in this thesis, technical writers will understand better how to address document design issues when designing for high-context cultures in general and the Japanese culture specifically. In order to effectively analyze document design strategies across cultures, I have collected documents from two cultures--from the United States and from Japan. These two cultures represent a low-context culture, the United States, and a high-context culture, Japan. The United States and Japan are opposite each other on Edward T. Hall's cultural continuum, providing ideal subjects for a cross-cultural document design analysis. Using previous research in document design and cultural studies, I have established a grid for analyzing visual elements in the documents I have collected--full color automobile sales booklets. I analyze both high- and low-context documents against this grid. The various document design grids allow for visual representation of document design decisions in both cultures. American international technical communicators can use these grids as a starting point for addressing the cultural implications of document design for high-context audiences. The research presented in this thesis shows that high- and low-context cultures use visuals much differently. Readers, in both cultures, are persuaded differently by visual elements. By exploring and analyzing the use of visuals such as photos, diagrams, line drawings, and the way both cultures use visuals to approach their audiences, this thesis attempts to present an explanation of visuals in high-context cultures that will aid American technical writers who design documents for international audiences. This thesis uses Japanese cultural analysis and Japanese design theories to explain high-context design decisions applied to Japanese documents.
Show less - Date Issued
- 2005
- Identifier
- CFE0000372, ucf:46336
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000372
- Title
- Intercultural Communication in the Global Age: Lessons Learned from French Technical Communicators.
- Creator
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Tallman, Nicole, Flammia, Madelyn, Bowdon, Melody, Jones, Daniel, University of Central Florida
- Abstract / Description
-
This thesis explores the cultural considerations American technical communicators must address when working with French colleagues and when creating technical documentation for French audiences. A review of the literature on intercultural communication theory was conducted, along with a review of the limited research on technical communication in France and the needs of French audiences. A qualitative online survey of French technical communicators was also conducted. Through this survey,...
Show moreThis thesis explores the cultural considerations American technical communicators must address when working with French colleagues and when creating technical documentation for French audiences. A review of the literature on intercultural communication theory was conducted, along with a review of the limited research on technical communication in France and the needs of French audiences. A qualitative online survey of French technical communicators was also conducted. Through this survey, French technical communicators reported on their intercultural beliefs, experiences, and practices, and information, language, and cultural needs.Survey responses were analyzed using inductive thematic analysis. Two main themes were developed as a result of this analysis: the importance of adapting content to French audiences, and the cultural differences between French and American information needs and communication styles. Survey findings were combined with theoretical and practical literature to offer American technical communicators guidance for successful intercultural interactions. This thesis concludes with suggestions for future practice and research in intercultural technical communication.
Show less - Date Issued
- 2013
- Identifier
- CFE0004944, ucf:49604
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004944
- Title
- A RELATIONSHIP STUDY OF STUDENT SATISFACTION WITH LEARNING ONLINE AND COGNITIVE LOAD.
- Creator
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Bradford, George, Dziuban, Charles, University of Central Florida
- Abstract / Description
-
This study sought to explore if a relationship exists between cognitive load and student satisfaction with learning online. The study separates academic performance (a.k.a., ÂÂ"learningÂÂ") from cognitive load and satisfaction to better distinguish influences on cognition (from cognitive load) and motivation (from satisfaction). Considerations that remain critical to the field of instructional design, as they apply to learning online, were described and used to guide a review of the...
Show moreThis study sought to explore if a relationship exists between cognitive load and student satisfaction with learning online. The study separates academic performance (a.k.a., ÂÂ"learningÂÂ") from cognitive load and satisfaction to better distinguish influences on cognition (from cognitive load) and motivation (from satisfaction). Considerations that remain critical to the field of instructional design, as they apply to learning online, were described and used to guide a review of the literature to find directions to fulfill the goal of this study. A survey was conducted and 1,401 students responded to an instrument that contained 24 items. Multiple analysis techniques found a positive, moderate, and significant (p < .01) correlation between cognitive load and satisfaction. Most importantly, the results found that approximately 25% of the variance in student satisfaction with learning online can be explained by cognitive load. New constructs emerged from a Principal Components Analysis that suggest a refined view of student perspectives and potential improvement to guide instructional design. Further, a correlation, even a moderate one, has not previously been found between cognitive load and satisfaction. The significance of this finding presents new opportunities to study and improve online instruction. Multiple opportunities for future research are briefly discussed and guidelines for developing online course designs using interpretations of the emerged factors are made.
Show less - Date Issued
- 2010
- Identifier
- CFE0003164, ucf:48599
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003164
- Title
- Understanding images and videos using context.
- Creator
-
Vaca Castano, Gonzalo, Da Vitoria Lobo, Niels, Shah, Mubarak, Mikhael, Wasfy, Jones, W Linwood, Wiegand, Rudolf, University of Central Florida
- Abstract / Description
-
In computer vision, context refers to any information that may influence how visual media are understood.(&)nbsp; Traditionally, researchers have studied the influence of several sources of context in relation to the object detection problem in images. In this dissertation, we present a multifaceted review of the problem of context.(&)nbsp; Context is analyzed as a source of improvement in the object detection problem, not only in images but also in videos. In the case of images, we also...
Show moreIn computer vision, context refers to any information that may influence how visual media are understood.(&)nbsp; Traditionally, researchers have studied the influence of several sources of context in relation to the object detection problem in images. In this dissertation, we present a multifaceted review of the problem of context.(&)nbsp; Context is analyzed as a source of improvement in the object detection problem, not only in images but also in videos. In the case of images, we also investigate the influence of the semantic context, determined by objects, relationships, locations, and global composition, to achieve a general understanding of the image content as a whole. In our research, we also attempt to solve the related problem of finding the context associated with visual media. Given a set of visual elements (images), we want to extract the context that can be commonly associated with these images in order to remove ambiguity. The first part of this dissertation concentrates on achieving image understanding using semantic context.(&)nbsp; In spite of the recent success in tasks such as image classi?cation, object detection, image segmentation, and the progress on scene understanding, researchers still lack clarity about computer comprehension of the content of the image as a whole. Hence, we propose a Top-Down Visual Tree (TDVT) image representation that allows the encoding of the content of the image as a hierarchy of objects capturing their importance, co-occurrences, and type of relations. A novel Top-Down Tree LSTM network is presented to learn about the image composition from the training images and their TDVT representations. Given a test image, our algorithm detects objects and determine the hierarchical structure that they form, encoded as a TDVT representation of the image.A single image could have multiple interpretations that may lead to ambiguity about the intentionality of an image.(&)nbsp; What if instead of having only a single image to be interpreted, we have multiple images that represent the same topic. The second part of this dissertation covers how to extract the context information shared by multiple images. We present a method to determine the topic that these images represent. We accomplish this task by transferring tags from an image retrieval database, and by performing operations in the textual space of these tags. As an application, we also present a new image retrieval method that uses multiple images as input. Unlike earlier works that focus either on using just a single query image or using multiple query images with views of the same instance, the new image search paradigm retrieves images based on the underlying concepts that the input images represent.Finally, in the third part of this dissertation, we analyze the influence of context in videos. In this case, the temporal context is utilized to improve scene identification and object detection. We focus on egocentric videos, where agents require some time to change from one location to another. Therefore, we propose a Conditional Random Field (CRF) formulation, which penalizes short-term changes of the scene identity to improve the scene identity accuracy.(&)nbsp; We also show how to improve the object detection outcome by re-scoring the results based on the scene identity of the tested frame. We present a Support Vector Regression (SVR) formulation in the case that explicit knowledge of the scene identity is available during training time. In the case that explicit scene labeling is not available, we propose an LSTM formulation that considers the general appearance of the frame to re-score the object detectors.
Show less - Date Issued
- 2017
- Identifier
- CFE0006922, ucf:51703
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006922
- Title
- Making An Impression: A Formal Analysis of the Contextual and Iconographic Characteristics of Ancient Mexican Ceramic Stamps.
- Creator
-
Peabody, Elizabeth, Barber, Sarah, Callaghan, Michael, Williams, Lana, Starbuck, John, University of Central Florida
- Abstract / Description
-
Ceramic stamps are a rare, yet widely distributed, artifact class within ancient Mexico. However, there has only been limited scholarly research on these objects and much current research is minimally supported. Depicting a wide range of iconography, including metaphysical, floral, and faunal designs, the function and meaning of these stamps, also known as estampias, pintaderas, and sellos, in ancient Mexican life remain an archaeological mystery. This paper examines the contextual,...
Show moreCeramic stamps are a rare, yet widely distributed, artifact class within ancient Mexico. However, there has only been limited scholarly research on these objects and much current research is minimally supported. Depicting a wide range of iconography, including metaphysical, floral, and faunal designs, the function and meaning of these stamps, also known as estampias, pintaderas, and sellos, in ancient Mexican life remain an archaeological mystery. This paper examines the contextual, chronological, and iconographic characteristics of ancient Mexican ceramic stamps as well as the distributional trends of those characteristics. This study is comprised of 83 stamps of varying design that date to between 1600 B.C.E. and 1520 C.E.: 19 found by the Rio Verde Project in Southern Oaxaca, Mexico, 5 found by Michael Coe in San Lorenzo, and 59 central Mexican stamps with credible, detailed provenience residing in the collection of the American Museum of Natural History and Robert S. Peabody Museum of Archaeology. Examined through the lens of culture history, processual, and postprocessual theory, comparative statistical analysis was conducted to assist the identification of significant trends. These analyses have revealed that stamp use shifted from mainly public to household spaces over time and that stamps predominantly depict nature and metaphysical themed motifs. I have also found that stamps were likely multipurpose artifacts whose use transcended social status. This research greatly expands on the limited literature about Mesoamerican ceramic stamps and provides valuable insight into ancient Mexican household, identity, and possibly religious, practices.
Show less - Date Issued
- 2018
- Identifier
- CFE0007411, ucf:52699
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007411
- Title
- Closing the Gaps in Professional Development: A Tool for School-based Leadership Teams.
- Creator
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Sampayo, Sandra, Boote, David, Hayes, Grant, Vitale, Thomas, Flanigan, Jacquelyn, University of Central Florida
- Abstract / Description
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The field of professional learning in education has been studied and added to extensively in the last few decades. Because the importance of learning in authentic contexts through professional dialogue has become so important, high quality, school-based professional learning is vital to building capacity at the school level. Unfortunately, the literature on professional development (PD) does not provide much guidance on how to bridge theory and practice at the school level, creating a gap....
Show moreThe field of professional learning in education has been studied and added to extensively in the last few decades. Because the importance of learning in authentic contexts through professional dialogue has become so important, high quality, school-based professional learning is vital to building capacity at the school level. Unfortunately, the literature on professional development (PD) does not provide much guidance on how to bridge theory and practice at the school level, creating a gap. With the goal of PD ultimately being to improve teacher performance and student learning, the problem with this gap is that school-level professional development is arbitrarily planned, resulting in variable outcomes. I propose the reason for this is schools lack a comprehensive framework or tool that guides the design of a quality professional learning plan. This problem was identified in Orange County Public School and this dissertation in practice aims at developing a solution that accounts for the district's specific contextual needs. My proposed solution is the design of an integrative tool that school leaders can use to guide them through the professional development planning process. The School-based Professional Learning Design Tool incorporates the professional development standards in planning, learning, implementing, and evaluating outlined in the Florida Professional Development System Evaluation Protocol. It also guides leaders in taking an inventory of the culture and context of their school in order to plan PD that will be viable given those considerations. The components of the Tool guide teams through assessing school teacher performance and student achievement data to help identify focus groups; determining gaps in learning through root cause analysis; creating goals aligned to gaps in performance; and selecting strategies for professional learning, follow-up support, and evaluation. The development of the Tool was informed by the extant literature on professional development, organizational theory, state and national standards for professional development, and principles of design. The Tool is to be completed in four phases. Phases one and two, the focus of this paper, include the literature review, organizational assessment, design specifications, and the first iteration of the Tool. In the next phases, the goals are to solicit feedback from an expert panel review, create a complete version of the Tool, and pilot it in elementary schools. Although the development of the Tool through its final phases will refine it considerably, there are limitations that will transcend all iterations. While the Tool incorporates best practices in professional development, the lack of empirical evidence on the effectiveness of specific PD elements in the literature renders this Tool only a best guess in helping schools plan effective professional development. Another limitation is that the Tool is not prescriptive and cannot use school data to make decisions for what strategies to implement. Taking these limitations into consideration, the use of this Tool can significantly impact the quality and effectiveness of professional development in schools.
Show less - Date Issued
- 2015
- Identifier
- CFE0005883, ucf:50889
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005883
- Title
- Environmental Physical(-)Virtual Interaction to Improve Social Presence with a Virtual Human in Mixed Reality.
- Creator
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Kim, Kangsoo, Welch, Gregory, Gonzalez, Avelino, Sukthankar, Gita, Bruder, Gerd, Fiore, Stephen, University of Central Florida
- Abstract / Description
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Interactive Virtual Humans (VHs) are increasingly used to replace or assist real humans in various applications, e.g., military and medical training, education, or entertainment. In most VH research, the perceived social presence with a VH, which denotes the user's sense of being socially connected or co-located with the VH, is the decisive factor in evaluating the social influence of the VH(-)a phenomenon where human users' emotions, opinions, or behaviors are affected by the VH. The purpose...
Show moreInteractive Virtual Humans (VHs) are increasingly used to replace or assist real humans in various applications, e.g., military and medical training, education, or entertainment. In most VH research, the perceived social presence with a VH, which denotes the user's sense of being socially connected or co-located with the VH, is the decisive factor in evaluating the social influence of the VH(-)a phenomenon where human users' emotions, opinions, or behaviors are affected by the VH. The purpose of this dissertation is to develop new knowledge about how characteristics and behaviors of a VH in a Mixed Reality (MR) environment can affect the perception of and resulting behavior with the VH, and to find effective and efficient ways to improve the quality and performance of social interactions with VHs. Important issues and challenges in real(-)virtual human interactions in MR, e.g., lack of physical(-)virtual interaction, are identified and discussed through several user studies incorporating interactions with VH systems. In the studies, different features of VHs are prototyped and evaluated, such as a VH's ability to be aware of and influence the surrounding physical environment, while measuring objective behavioral data as well as collecting subjective responses from the participants. The results from the studies support the idea that the VH's awareness and influence of the physical environment can improve not only the perceived social presence with the VH, but also the trustworthiness of the VH within a social context. The findings will contribute towards designing more influential VHs that can benefit a wide range of simulation and training applications for which a high level of social realism is important, and that can be more easily incorporated into our daily lives as social companions, providing reliable relationships and convenience in assisting with daily tasks.
Show less - Date Issued
- 2018
- Identifier
- CFE0007340, ucf:52115
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007340
- Title
- The Collector as Arbiter of Art: A Phenomenological Investigation of Collectors' Critical Judgment Development and Their Understanding of Art Toward a Theoretical Model for Appreciation and Criticism in Art Education.
- Creator
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Grey, Anne, Brewer, Thomas, Sivo, Stephen, Kaplan, Jeffrey, Price, Mark, Roberts, Sherron, University of Central Florida
- Abstract / Description
-
The purpose of this study was to investigate art collectors' specific method of developing and making critical judgments in the context of their understanding of art. Phenomenological research methods were employed to obtain data through interviews with collectors of Contemporary African American art, Latin American art, and Minimalist and Conceptual art. Based on the findings, collectors' approaches to critical judgment can be categorized into three areas. First, critical skills are both...
Show moreThe purpose of this study was to investigate art collectors' specific method of developing and making critical judgments in the context of their understanding of art. Phenomenological research methods were employed to obtain data through interviews with collectors of Contemporary African American art, Latin American art, and Minimalist and Conceptual art. Based on the findings, collectors' approaches to critical judgment can be categorized into three areas. First, critical skills are both intuitive and developed over time, through a holistic and aesthetic process set in the art world. Collectors' edification requires commitment, and intense looking enabling them to see how works of art communicate. Second, key events that marked collectors' methodological approaches were connections with artists and art, notable purchases, and exhibitions of their collection. These events resulted from an integration of the collectors' identification with the art work, manifested over time in various forms. Finally, those objects that best reflected collectors' specific development of critical judgment and understanding of art were noted either by specific artists in their collection or the collection as a whole, functioning as vital aspects of the collectors' life and at the same time contributing to culture and society in its capacity to cause conversations. There is an opportunity to apply the information from collectors' processes as an educational model for teaching and learning about appreciation and criticism in art education by thinking about art collections more broadly, as another way to look at life and the art in life.
Show less - Date Issued
- 2011
- Identifier
- CFE0004115, ucf:49103
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004115
- Title
- Not Woman Enough Harassment: Scale Development and an Integrated Model from Antecedent to Outcome.
- Creator
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Wolcott, Amanda, Jentsch, Kimberly, Jentsch, Florian, Shoss, Mindy, Lopez, Stephanie, University of Central Florida
- Abstract / Description
-
The rise of research on workplace mistreatment in the past twenty years can be attributed to the realization that workplace mistreatment is associated with a host of deleterious outcomes for both the individual targets of the mistreatment and the organizations in which they work. However, the extant literature is failing to capture the full range of sex-based mistreatment that people may experience through a tendency to focus solely on sexual harassment and sex discrimination, which are very...
Show moreThe rise of research on workplace mistreatment in the past twenty years can be attributed to the realization that workplace mistreatment is associated with a host of deleterious outcomes for both the individual targets of the mistreatment and the organizations in which they work. However, the extant literature is failing to capture the full range of sex-based mistreatment that people may experience through a tendency to focus solely on sexual harassment and sex discrimination, which are very specific types of behavior based on one's sex and gender stereotypes. In this dissertation, I introduce the construct of Not Woman Enough Harassment, or the extent to which women perceive that they are treated unfavorably because they do not meet traditionally held stereotypes of femininity. A scale was developed and validated in order to measure this type of harassment, and a model from antecedent to outcome was proposed. Results demonstrated that not woman enough harassment was experienced by approximately 32.5% of the sample. The scale showed good psychometric properties, with two distinct factors of harassment based on physical and non-physical traits. Not woman enough harassment was demonstrated to be distinct from other forms of sexual and workplace harassment. Discomfort with gender norm conformity and masculine physical and non-physical expression were shown to be antecedents of not woman enough harassment, along with a moderating effect of job gender context. In addition, not woman enough harassment significantly predicted decreased job satisfaction, affective organizational commitment, and task performance and increased withdrawal and job stress. Similar patterns were found for males with not man enough harassment.
Show less - Date Issued
- 2017
- Identifier
- CFE0006962, ucf:51629
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006962
