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Title: A Framework for Transforming Elementary Literacy Coaches' Professional Learning.
Creator: Forsythe, Lenora, Zygouris-Coe, Vassiliki, Hopp, Carolyn, Puig, Enrique, Roberts, Sherron, Zugelder, Gina, University of Central Florida
Abstract / Description: Elementary literacy coaches serve as one component in a professional learning system tosupport teacher learning. This dissertation in practice intended to highlight the need for an effective professional learning system for elementary literacy coaches that will enable them to impact teacher and student learning. The pilot study explored needs and perspectives of professional learning opportunities for elementary literacy coaches in a central Florida school district. Findings from the pilot...
Show moreElementary literacy coaches serve as one component in a professional learning system tosupport teacher learning. This dissertation in practice intended to highlight the need for an effective professional learning system for elementary literacy coaches that will enable them to impact teacher and student learning. The pilot study explored needs and perspectives of professional learning opportunities for elementary literacy coaches in a central Florida school district. Findings from the pilot study, along with literature surrounding the topic, resulted in the design of A Framework for Elementary Literacy Coaches' Professional Learning. This Framework utilized components from existing resources to develop access points for literacy coaches' professional learning. Access points included choice in coaching cycles, collaborative learning communities among coaches, and differentiated learning opportunities for literacy coaches to build their repertoire of literacy content knowledge and coaching skills. Theoreticalcontributions of adult learning and the sociocultural learning perspective within the Framework ensured literacy coaches' choice, ownership, and embedded learning opportunities. Suggested use for this dissertation in practice is to inform professional learning practices for in-service and pre-service elementary literacy coaches to ensure continued growth in coaching skills and literacy knowledge.
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Date Issued: 2016
Identifier: CFE0006300, ucf:51610
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006300

Title: A Framework For Workforce Management An Agent Based Simulation Approach.
Creator: Marin, Mario, Rabelo, Luis, Lee, Gene, Elshennawy, Ahmad, Kincaid, John, University of Central Florida
Abstract / Description: In today's advanced technology world, enterprises are in a constant state of competition. As the intensity of competition increases the need to continuously improve organizational performance has never been greater. Managers at all levels must be on a constant quest for finding ways to maximize their enterprises' strategic resources. Enterprises can develop sustained competitiveness only if their activities create value in unique ways. There should be an emphasis to transfer this...
Show moreIn today's advanced technology world, enterprises are in a constant state of competition. As the intensity of competition increases the need to continuously improve organizational performance has never been greater. Managers at all levels must be on a constant quest for finding ways to maximize their enterprises' strategic resources. Enterprises can develop sustained competitiveness only if their activities create value in unique ways. There should be an emphasis to transfer this competitiveness to the resources it has on hand and the resources it can develop to be used in this environment. The significance of human capital is even greater now, as the intangible value and the tacit knowledge of enterprises' resources should be strategically managed to achieve a greater level of continuous organizational success. This research effort seeks to provide managers with means for accurate decision making for their workforce management. A framework for modeling and managing human capital to achieve effective workforce planning strategies is built to assist enterprise in their long term strategic organizational goals.
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Date Issued: 2014
Identifier: CFE0005375, ucf:50439
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005375

Title: A Framework of Critical Success Factors for Business Organizations that Lead to Performance Excellence Based on a Financial and Quality Systems Assessment.
Creator: Francisco, Melissa, Elshennawy, Ahmad, Karwowski, Waldemar, Rabelo, Luis, Xanthopoulos, Petros, Weheba, Gamal, University of Central Florida
Abstract / Description: One of the most important tasks that business leaders undertake in order to achieve a superior market position is strategic planning. Beyond this obligation, business owners desire to maximize profit and maintain steady growth. In order to do this, resources must be invested in the most efficient way possible in order to achieve performance excellence. Adjusting business operations quickly, however, especially in times of economic uncertainty, is extremely difficult. Business leaders...
Show moreOne of the most important tasks that business leaders undertake in order to achieve a superior market position is strategic planning. Beyond this obligation, business owners desire to maximize profit and maintain steady growth. In order to do this, resources must be invested in the most efficient way possible in order to achieve performance excellence. Adjusting business operations quickly, however, especially in times of economic uncertainty, is extremely difficult. Business leaders therefore need insight into which elements of organizational improvement are most effective in order to strategically invest their resources to achieve superior performance in the most efficient way possible.This research examines the results of companies which have a demonstrated ability to achieve performance excellence as defined by the National Institute of Standards and Technology's Malcolm Baldrige Criteria for Performance Excellence. This research examined award-winning applications to determine common input factors, compared the business results of a subset of those award-winners with the overall market for a time-frame of 11 years, and then investigated the profitability, liquidity, debt management, asset management, and per share performance ratios of award-winners compared with their industry peers over 11 years as well.The main focus of this research is to determine whether participation in performance excellence best practices have created value for shareholders and business owners. This objective is achieved through the analysis of performance results of award winning companies. This research demonstrates that the integration of efforts associated with performance excellence is in-fact advantageous.
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Date Issued: 2014
Identifier: CFE0005331, ucf:50503
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005331

Title: A FRAMEWORK ROADMAP FOR IMPLEMENTING LEAN SIX SIGMA IN LOCAL GOVERNMENTAL ENTITIES.
Creator: Furterer, Sandra L., Elshennawy, Ahmad K., University of Central Florida
Abstract / Description: Lean Six Sigma is an approach focused on improving quality, reducing variation and eliminating waste in an organization. The concept of combining the principles and tools of Lean Enterprise and Six Sigma has occurred in the literature over the last several years. The majority of Lean Six Sigma applications have been in private industry, focusing mostly on manufacturing applications. The literature has not provided a framework for implementing Lean Six Sigma programs applied to local...
Show moreLean Six Sigma is an approach focused on improving quality, reducing variation and eliminating waste in an organization. The concept of combining the principles and tools of Lean Enterprise and Six Sigma has occurred in the literature over the last several years. The majority of Lean Six Sigma applications have been in private industry, focusing mostly on manufacturing applications. The literature has not provided a framework for implementing Lean Six Sigma programs applied to local government. This research provides a framework roadmap for implementing Lean Six Sigma in local government. The Service Improvement for Transaction-based Entities Lean Six Sigma Framework Roadmap (SITE MAP) identifies the activities, principles, tools, and important component factors to implement Lean Six Sigma. The framework provides a synergistic approach to integrating the concepts and tools of Lean Enterprise and Six Sigma using the DMAIC (Define-Measure-Analyze-Improve-Control) problem solving approach. A case study was used to validate the framework. Lean Six Sigma was successfully applied in a 7,000-citizen municipality to reduce the cycle time of the financial administrative processes in the Finance Department of the city government.
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Date Issued: 2004
Identifier: CFE0000021, ucf:46067
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000021

Title: A FRAMEWORK TO ALIGN STRATEGY, IMPROVEMENT PERFORMANCE, AND CUSTOMER SATISFACTION USING AN INTEGRATION OF SIX SIGMA AND BALANCED SCORECARD.
Creator: Rodriguez, Adriana, Malone, Linda, University of Central Florida
Abstract / Description: This dissertation investigated the development, implementation, and evaluation of a management methodology founded on the alignment among the strategy, performance, and customer to bring value to any organization. A case study/action research in a service organization, called Institution "Z," provided the opportunity to assess the effects of the proposed Six Sigma Scorecard (SSS) methodology in the productivity indicators (measured by cycle time, line capacity, and number of errors). The Case...
Show moreThis dissertation investigated the development, implementation, and evaluation of a management methodology founded on the alignment among the strategy, performance, and customer to bring value to any organization. A case study/action research in a service organization, called Institution "Z," provided the opportunity to assess the effects of the proposed Six Sigma Scorecard (SSS) methodology in the productivity indicators (measured by cycle time, line capacity, and number of errors). The Case study/action research was conducted in three phases: Model and Concepts Design, Data Collection, and Findings. During the research, validity was pursued by using triangulation and theory to help maintain the case under research control. The observation of the SSS methodology in a real organization allowed the researcher to describe the merging process between Balanced Scorecard and Six Sigma methodology and their relationships to each other. The SSS methodology allowed identification of improvement projects that contribute to organizational strategy, implementation of strategies and provide feedback to the top level of management establishing alignment at three organizational levels – corporate, business, and functional. The results of the implementation of the SSS methodology in Institution Z showed a 40% improvement of the cycle time of the auto credit process, a 500% increase in the capacity of the process, and 65% decrease in the number of non-added value activities. During the same period of time, the BSC indicators showed a positive impact, specifically one financial indicator known as Level of Intermediation or GIC grew from 30% to 42% as it was expected by the end of the SSS implementation. The demonstration of the SSS framework in a Case study justifies the need for a combined methodology that aligns strategy, performance improvement and organizational outputs in a feedback loop. More research in this area is needed, especially investigations that include assessment studies where different management approaches are used alone and combined with strategic tools, and investigations that measure the relationship between level of coherence in the three merging points of the SSS and the results reached at the performance of the organization.
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Date Issued: 2008
Identifier: CFE0002191, ucf:47903
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002191

Title: A framework to generate a smart manufacturing system configurations using agents and optimization.
Creator: Nagadi, Khalid, Rabelo, Luis, Lee, Gene, Elshennawy, Ahmad, Ahmad, Ali, University of Central Florida
Abstract / Description: Manufacturing is a crucial element in the global economy. During the last decade, the national manufacturing sector loses nearly 30% of its workforce and investments. Consequently, the quality of the domestic goods, global share, and manufacturing capabilities has been declined. Therefore, innovative ways to optimize the usage of the Smart Manufacturing Systems (SMS) are required to form a new manufacturing era. This research is presenting a framework to optimize the design of SMS. This...
Show moreManufacturing is a crucial element in the global economy. During the last decade, the national manufacturing sector loses nearly 30% of its workforce and investments. Consequently, the quality of the domestic goods, global share, and manufacturing capabilities has been declined. Therefore, innovative ways to optimize the usage of the Smart Manufacturing Systems (SMS) are required to form a new manufacturing era. This research is presenting a framework to optimize the design of SMS. This includes the determination of the suitable machines that can perform the job efficiently, the quantity of those machines, and the potential messaging system required for sharing information.Multiple reviews are used to form the framework. Expert machine selection matrix identifies the required machines and machine parameter matrix defines the specifications of those machines. While business process modeling and notation (BPMN) captures the process plan in object-oriented fashion. In addition, to agent unified modeling language (AUML) that guides the application of message sequence diagram and statecharts. Finally, the configuration is obtained from a hybrid simulation model. Agent based-modeling is used to capture the behavior of the machines where discrete event simulation mimics the process flow. A case study of a manufacturing system is used to verify the study. As a result, the framework shows positive outcomes in supporting upper management in the planning phase of establishing a SMS or evaluating an existing one.
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Date Issued: 2016
Identifier: CFE0006540, ucf:51311
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006540

Title: A FRAMEWORK TO MODEL COMPLEX SYSTEMS VIA DISTRIBUTED SIMULATION – A CASE STUDY OF THE VIRTUAL TEST BED SIMULATION SYSTEM USING THE HIGH LEVEL ARCHITECTURE.
Creator: Park, Jaebok, Sepulveda, Jose, University of Central Florida
Abstract / Description: As the size, complexity, and functionality of systems we need to model and simulate con-tinue to increase, benefits such as interoperability and reusability enabled by distributed discrete-event simulation are becoming extremely important in many disciplines, not only military but also many engineering disciplines such as distributed manufacturing, supply chain management, and enterprise engineering, etc. In this dissertation we propose a distributed simulation framework for the development...
Show moreAs the size, complexity, and functionality of systems we need to model and simulate con-tinue to increase, benefits such as interoperability and reusability enabled by distributed discrete-event simulation are becoming extremely important in many disciplines, not only military but also many engineering disciplines such as distributed manufacturing, supply chain management, and enterprise engineering, etc. In this dissertation we propose a distributed simulation framework for the development of modeling and the simulation of complex systems. The framework is based on the interoperability of a simulation system enabled by distributed simulation and the gateways which enable Com-mercial Off-the-Shelf (COTS) simulation packages to interconnect to the distributed simulation engine. In the case study of modeling Virtual Test Bed (VTB), the framework has been designed as a distributed simulation to facilitate the integrated execution of different simulations, (shuttle process model, Monte Carlo model, Delay and Scrub Model) each of which is addressing differ-ent mission components as well as other non-simulation applications (Weather Expert System and Virtual Range). Although these models were developed independently and at various times, the original purposes have been seamlessly integrated, and interact with each other through Run-time Infrastructure (RTI) to simulate shuttle launch related processes. This study found that with the framework the defining properties of complex systems - interaction and emergence – are realized and that the software life cycle models (including the spiral model and prototyping) can be used as metaphors to manage the complexity of modeling and simulation of the system. The system of systems (a complex system is intrinsically a "system of systems") continuously evolves to accomplish its goals, during the evolution subsystems co-ordinate with one another and adapt with environmental factors such as policies, requirements, and objectives. In the case study we first demonstrate how the legacy models developed in COTS simulation languages/packages and non-simulation tools can be integrated to address a compli-cated system of systems. We then describe the techniques that can be used to display the state of remote federates in a local federate in the High Level Architecture (HLA) based distributed simulation using COTS simulation packages.
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Date Issued: 2005
Identifier: CFE0000534, ucf:46416
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000534

Title: A Full Coverage Film Cooling Study: The Effect of an Alternating Compound Angle.
Creator: Hodges, Justin, Kapat, Jayanta, Gordon, Ali, Vasu Sumathi, Subith, University of Central Florida
Abstract / Description: This thesis is an experimental and numerical full-coverage film cooling study. The objective of this work is the quantification of local heat transfer augmentation and adiabatic film cooling effectiveness for two full-coverage film cooling geometries. Experimental data was acquired with a scientific grade CCD camera, where images are taken over the heat transfer surface, which is painted with a temperature sensitive paint. The CFD component of this study served to evaluate how well the v2-f...
Show moreThis thesis is an experimental and numerical full-coverage film cooling study. The objective of this work is the quantification of local heat transfer augmentation and adiabatic film cooling effectiveness for two full-coverage film cooling geometries. Experimental data was acquired with a scientific grade CCD camera, where images are taken over the heat transfer surface, which is painted with a temperature sensitive paint. The CFD component of this study served to evaluate how well the v2-f turbulence model predicted film cooling effectiveness throughout the array, as compared with experimental data. The two staggered arrays tested are different from one another through a compound angle shift after 12 rows of holes. The compound angle shifts from ?=-45(&)deg; to ?=+45(&)deg; at row 13. Each geometry had 22 rows of cylindrical film cooling holes with identical axial and lateral spacing (X/D=P/D=23). Levels of laterally averaged film cooling effectiveness for the superior geometry approach 0.20, where the compound angle shift causes a decrease in film cooling effectiveness. Levels of heat transfer augmentation maintain values of nearly h/h0=1.2. There is no effect of compound angle shift on heat transfer augmentation observed. The CFD results are used to investigate the detrimental effect of the compound angle shift, while the SST k-? turbulence model shows to provide the best agreement with experimental results.
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Date Issued: 2015
Identifier: CFE0005626, ucf:50228
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005626

Title: A Game-theoretic Model for Regulating Freeriding in Subsidy-Based Pervasive Spectrum Sharing Markets.
Creator: Rahman, Mostafizur, Yuksel, Murat, Nam, Boo Hyun, Pourmohammadi Fallah, Yaser, University of Central Florida
Abstract / Description: Cellular spectrum is a limited natural resource becoming scarcer at a worrisome rate. To satisfy users' expectation from wireless data services, researchers and practitioners recognized the necessityof more utilization and pervasive sharing of the spectrum. Though scarce, spectrum is underutilized in some areas or within certain operating hours due to the lack of appropriate regulatory policies, static allocation and emerging business challenges. Thus, finding ways to improve the utilization...
Show moreCellular spectrum is a limited natural resource becoming scarcer at a worrisome rate. To satisfy users' expectation from wireless data services, researchers and practitioners recognized the necessityof more utilization and pervasive sharing of the spectrum. Though scarce, spectrum is underutilized in some areas or within certain operating hours due to the lack of appropriate regulatory policies, static allocation and emerging business challenges. Thus, finding ways to improve the utilization of this resource to make sharing more pervasive is of great importance. There already exists a number of solutions to increase spectrum utilization via increased sharing. Dynamic Spectrum Access (DSA) enables a cellular operator to participate in spectrum sharing in many ways, such as geological database and cognitive radios, but these systems perform spectrum sharing at the secondary level (i.e., the bands are shared if and only if the primary/licensed user is idle) and it is questionable if they will be sufficient to meet the future expectations of the spectral efficiency.Along with the secondary sharing, spectrum sharing among primary users is emerging as a new domain of future mode of pervasive sharing. We call this type of spectrum sharing among primaryusers as (")pervasive spectrum sharing (PSS)("). However, such spectrum sharing among primary users requires strong incentives to share and ensuring a freeriding-free cellular market.Freeriding in pervasively shared spectrum markets (be it via government subsidies/regulations or self-motivated coalitions among cellular operators) is a real techno-economic challenge to be addressed. In a PSS market, operators will share their resources with primary users of other operators and may sometimes have to block their own primary users in order to attain sharing goals. Small operators with lower quality service may freeride on large operators' infrastructure in such pervasively shared markets. Even worse, since small operators' users may perceive higher-than-expected service quality for a lower fee, this can cause customer loss to the large operators and motivate small operators to continue freeriding with additional earnings from the stolen customers. Thus, freeriding can drive a shared spectrum market to an unhealthy and unstable equilibrium. In this work, we model the freeriding by small operators in shared spectrum markets via a game-theoretic framework. We focus on a performance-based government incentivize scheme and aim to minimize the freeriding issue emerging in such PSS markets. We present insights from the model and discuss policy and regulatory challenges.
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Date Issued: 2018
Identifier: CFE0007082, ucf:52024
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007082

Title: A GASOLINE DEMAND MODEL FOR THE UNITED STATES LIGHT VEHICLE FLEET.
Creator: Rey, Diana, Al-Deek, Haitham, University of Central Florida
Abstract / Description: ABSTRACT The United States is the world's largest oil consumer demanding about twenty five percent of the total world oil production. Whenever there are difficulties to supply the increasing quantities of oil demanded by the market, the price of oil escalates leading to what is known as oil price spikes or oil price shocks. The last oil price shock which was the longest sustained oil price run up in history, began its course in year 2004, and ended in 2008. This last oil price shock...
Show moreABSTRACT The United States is the world's largest oil consumer demanding about twenty five percent of the total world oil production. Whenever there are difficulties to supply the increasing quantities of oil demanded by the market, the price of oil escalates leading to what is known as oil price spikes or oil price shocks. The last oil price shock which was the longest sustained oil price run up in history, began its course in year 2004, and ended in 2008. This last oil price shock initiated recognizable changes in transportation dynamics: transit operators realized that commuters switched to transit as a way to save gasoline costs, consumers began to search the market for more efficient vehicles leading car manufactures to close "gas guzzlers" plants, and the government enacted a new law entitled the Energy Independence Act of 2007, which called for the progressive improvement of the fuel efficiency indicator of the light vehicle fleet up to 35 miles per gallon in year 2020. The past trend of gasoline consumption will probably change; so in the context of the problem a gasoline consumption model was developed in this thesis to ascertain how some of the changes will impact future gasoline demand. Gasoline demand was expressed in oil equivalent million barrels per day, in a two steps Ordinary Least Square (OLS) explanatory variable model. In the first step, vehicle miles traveled expressed in trillion vehicle miles was regressed on the independent variables: vehicles expressed in million vehicles, and price of oil expressed in dollars per barrel. In the second step, the fuel consumption in million barrels per day was regressed on vehicle miles traveled, and on the fuel efficiency indicator expressed in miles per gallon. The explanatory model was run in EVIEWS that allows checking for normality, heteroskedasticty, and serial correlation. Serial correlation was addressed by inclusion of autoregressive or moving average error correction terms. Multicollinearity was solved by first differencing. The 36 year sample series set (1970-2006) was divided into a 30 years sub-period for calibration and a 6 year "hold-out" sub-period for validation. The Root Mean Square Error or RMSE criterion was adopted to select the "best model" among other possible choices, although other criteria were also recorded. Three scenarios for the size of the light vehicle fleet in a forecasting period up to 2020 were created. These scenarios were equivalent to growth rates of 2.1, 1.28, and about 1 per cent per year. The last or more optimistic vehicle growth scenario, from the gasoline consumption perspective, appeared consistent with the theory of vehicle saturation. One scenario for the average miles per gallon indicator was created for each one of the size of fleet indicators by distributing the fleet every year assuming a 7 percent replacement rate. Three scenarios for the price of oil were also created: the first one used the average price of oil in the sample since 1970, the second was obtained by extending the price trend by exponential smoothing, and the third one used a longtime forecast supplied by the Energy Information Administration. The three scenarios created for the price of oil covered a range between a low of about 42 dollars per barrel to highs in the low 100's. The 1970-2006 gasoline consumption trend was extended to year 2020 by ARIMA Box-Jenkins time series analysis, leading to a gasoline consumption value of about 10 millions barrels per day in year 2020. This trend line was taken as the reference or baseline of gasoline consumption. The savings that resulted by application of the explanatory variable OLS model were measured against such a baseline of gasoline consumption. Even on the most pessimistic scenario the savings obtained by the progressive improvement of the fuel efficiency indicator seem enough to offset the increase in consumption that otherwise would have occurred by extension of the trend, leaving consumption at the 2006 levels or about 9 million barrels per day. The most optimistic scenario led to savings up to about 2 million barrels per day below the 2006 level or about 3 millions barrels per day below the baseline in 2020. The "expected" or average consumption in 2020 is about 8 million barrels per day, 2 million barrels below the baseline or 1 million below the 2006 consumption level. More savings are possible if technologies such as plug-in hybrids that have been already implemented in other countries take over soon, are efficiently promoted, or are given incentives or subsidies such as tax credits. The savings in gasoline consumption may in the future contribute to stabilize the price of oil as worldwide demand is tamed by oil saving policy changes implemented in the United States.
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Date Issued: 2009
Identifier: CFE0002539, ucf:47659
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002539

Title: A Generational Perspective on the Development of the Political History of Modern Iran.
Creator: McDowall, Gregory, Sadri, Houman, Knuckey, Jonathan, Kang, Kyungkook, University of Central Florida
Abstract / Description: Mark Twain once remarked, (")History doesn't repeat itself, but it does rhyme.(") If such recurrences happen with some discernible periodicity it would support the view that society develops cyclically. Though still controversial, this perspective has found a home in the long wave cycle theories of economics and international relations. For decades, international relation theorists have argued over which factor has primarily driven the interstate system, but this paradigm transforms that...
Show moreMark Twain once remarked, (")History doesn't repeat itself, but it does rhyme.(") If such recurrences happen with some discernible periodicity it would support the view that society develops cyclically. Though still controversial, this perspective has found a home in the long wave cycle theories of economics and international relations. For decades, international relation theorists have argued over which factor has primarily driven the interstate system, but this paradigm transforms that debate into a query over which of them serves as the medium for carrying waves of social change, be it war, trade, class, or gender relations. William Strauss and Neil Howe, however, found that there is no medium. Instead, long wave cycles result from oscillations of the supply and demand for order due to generational turnover. Essentially, it is a method of error correction, of stabilizing society against the forces of disruptive change wrought by modernity. Though it broadly encompasses many long wave cycle theories, it has yet to be applied to study the modern history of a developing country. Iran offers such a case to test the limits of Strauss and Howe's theory, which this study will perform by comparing its history over the last two centuries, particularly since the turn of the twentieth century, to their theory's expectations. Moreover, in accounting for the deviations, this study attempts to extend their theory to include the modernization process itself, and how it relates to the generational cycle.
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Date Issued: 2015
Identifier: CFE0006226, ucf:51083
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006226

Title: A Generic Framework For Multi-Method Modeling and Simulation of Complex Systems Using Discrete Event, System Dynamics and Agent Based Approaches.
Creator: Mykoniatis, Konstantinos, Karwowski, Waldemar, Kincaid, John, Xanthopoulos, Petros, Akbas, Ilhan, University of Central Florida
Abstract / Description: Decisions about Modeling and Simulation (M(&)S) of Complex Systems (CS) need to be evaluated prior to implementation. Discrete Event (DE), System Dynamics (SD), and Agent Based (AB) are three different M(&)S approaches widely applied to enhance decision-making of complex systems. However, single type M(&)S approaches can face serious challenges in representing the overall multidimensional nature of CS and may result in the design of oversimplified models excluding important factors....
Show moreDecisions about Modeling and Simulation (M(&)S) of Complex Systems (CS) need to be evaluated prior to implementation. Discrete Event (DE), System Dynamics (SD), and Agent Based (AB) are three different M(&)S approaches widely applied to enhance decision-making of complex systems. However, single type M(&)S approaches can face serious challenges in representing the overall multidimensional nature of CS and may result in the design of oversimplified models excluding important factors. Conceptual frameworks are necessary to offer useful guidance for combining and/or integrating different M(&)S approaches. Although several hybrid M(&)S frameworks have been described and are currently deployed, there is limited guidance on when, why and how to combine, and/or integrate DE, SD, and AB approaches. The existing hybrid frameworks focus more on how to deal with specific problems rather than to provide a generic way of applicability to various problem situations.The main aim of this research is to develop a generic framework for Multi-Method Modeling and Simulation of CS, which provides a practical guideline to integrated deployment or combination of DE, SD, and AB M(&)S methods. The key contributions of this dissertation include: (1) a meta-analysis literature review that identifies criteria and generic types of interaction relationships that are served as a basis for the development of a multi-method modeling and simulation framework; (2) a methodology and a framework that guide the user through the development of multi-method simulation models to solve CS problems; (3) an algorithm that recommends appropriate M(&)S method(s) based on the user selected criteria for user defined objective(s); (4) the implementation and evaluation of multi method simulation models based on the framework's recommendation in diverse domains; and (5) the comparison of multi-method simulation models created by following the multi-method modeling and simulation framework.It is anticipated that this research will inspire and motivate students, researchers, practitioners and decision makers engaged in M(&)S to become aware of the benefits of the cross-fertilization of the three key M(&)S methods.
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Date Issued: 2015
Identifier: CFE0005980, ucf:50762
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005980

Title: A GENRE OF COLLECTIVE INTELLIGENCE: BLOGS AS INTERTEXTUAL, RECIPROCAL, AND PEDAGOGICAL.
Creator: Gramer, Rachel, Bell, Kathleen, University of Central Florida
Abstract / Description: This thesis investigates the rhetorical features of blogs that lend them dialogic strength as an online genre through the lens of Mikhail Bakhtin's theories of speech genres, utterances, and dialogism. As a relatively new online genre, blogs stem from previous genres (in print and online as well as verbal), but their emergence as a popular form of expression in our current culture demands attention to how blogs also offer us different rhetorical opportunities to meet our changing social...
Show moreThis thesis investigates the rhetorical features of blogs that lend them dialogic strength as an online genre through the lens of Mikhail Bakhtin's theories of speech genres, utterances, and dialogism. As a relatively new online genre, blogs stem from previous genres (in print and online as well as verbal), but their emergence as a popular form of expression in our current culture demands attention to how blogs also offer us different rhetorical opportunities to meet our changing social exigencies as online subjects in the 21st century. This thesis was inspired by questions about how blogs redefine the rhetorical situation to alter our textual roles as readers, writers, and respondents in the new generic circumstances we encounter--and reproduce--online. Applying the framework of Henry Jenkins' Convergence Culture and Pierre Levy's Collective Intelligence, this thesis analyzes how blogs enable us as online subjects to add our utterances to our textual collective intelligence, which benefits from our personal experience and the epistemic conversations of blogs as online texts. In addition, it is also an inquiry into how the rhetorical circumstances of blogs as textual sites of collective intelligence can create a reciprocal learning environment in the writing classroom. I ultimately examine blogs through the lenses of alternative pedagogy--informed by David Wallace and Helen Rothschild Ewald's Mutuality in the Rhetoric and Composition Classroom and Xin Liu Gale's Teachers, Discourses, and Authority in the Postmodern Composition Classroom--to suggest the potential consequences of a writing education that includes how we are currently writing--and being written by--our culture's online generic practice of blogs.
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Date Issued: 2008
Identifier: CFE0002402, ucf:47770
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002402

Title: A GIS SAFETY STUDY AND A COUNTY-LEVEL SPATIAL ANALYSIS OF CRASHES IN THE STATE OF FLORIDA.
Creator: Darwiche, Ali, Abdel-Aty, Mohamed, University of Central Florida
Abstract / Description: The research conducted in this thesis consists of a Geographic Information Systems (GIS) based safety study and a spatial analysis of vehicle crashes in the State of Florida. The GIS safety study is comprised of a County and Roadway Level GIS analysis of multilane corridors. The spatial analysis investigated the use of county-level vehicle crash models, taking spatial effects into account. The GIS safety study examines the locations of high trends of severe crashes (includes incapacitating...
Show moreThe research conducted in this thesis consists of a Geographic Information Systems (GIS) based safety study and a spatial analysis of vehicle crashes in the State of Florida. The GIS safety study is comprised of a County and Roadway Level GIS analysis of multilane corridors. The spatial analysis investigated the use of county-level vehicle crash models, taking spatial effects into account. The GIS safety study examines the locations of high trends of severe crashes (includes incapacitating and fatal crashes) on multilane corridors in the State of Florida at two levels, county level and roadway level. The GIS tool, which is used frequently in traffic safety research, was utilized to visually display those locations. At the county level, several maps of crash trends were generated. It was found that counties with high population and large metropolitan areas tend to have more crash occurrences. It was also found that the most severe crashes occurred in counties with more urban than rural roads. The neighboring counties of Pasco, Pinellas and Hillsborough had high severe crash rate per mile. At the roadway level, seven counties were chosen for the analysis based on their high severe crash trends, metropolitan size and geographical location. Several GIS maps displaying the safety level of multilane corridors in the seven counties were generated. The GIS maps were based on a ranking methodology that was developed in research that evaluated the safety condition of road segments and signalized intersections separately. The GIS maps were supported by Excel tables which provided details on the most hazardous locations on the roadways. The results of the roadway level analysis found that the worst corridors were located in Pasco, Pinellas and Hillsborough Counties. Also, a sliding window approach was developed and performed on the ten most hazardous corridors of the seven counties. The results were graphs locating the most dangerous 0.5 miles on a corridor. For the spatial analysis of crashes, the exploratory Moran's I statistic test revealed that crash related spatial clustering existed at the county level. For crash modeling, a full Bayesian (FB) hierarchical model is proposed to account for the possible spatial correlation among crash occurrence of adjacent counties. The spatial correlation is realized by specifying a Conditional Auto-regressive prior to the residual term of the link function in standard Poisson regression. Two FB models were developed, one for total crashes and one for severe crashes. The variables used include traffic related factors and socio-economic factors. Counties with higher road congestion levels, higher densities of arterials and intersections, higher percentage of population in the 15-24 age group and higher income levels have increased crash risk. Road congestion and higher education levels, however, were negatively correlated with the risk of severe crashes. The analysis revealed that crash related spatial correlation existed among the counties. The FB models were found to fit the data better than traditional methods such as Negative Binomial and that is primarily due to the existence of spatial correlation. Overall, this study provides the Transportation Agencies with specific information on where improvements must be implemented to have better safety conditions on the roads of Florida. The study also proves that neighboring counties are more likely to have similar crash trends than the more distant ones.
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Date Issued: 2009
Identifier: CFE0002623, ucf:48204
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002623

Title: A GLOBAL STRATEGIC FINANCIAL ANALYSIS OF THE LUXURY RETAIL INDUSTRY.
Creator: LaVan, Lauren, Curcio, Richard, University of Central Florida
Abstract / Description: A global strategic financial analysis of the luxury retail industry was conducted. The research entailed comprehensive analyses and forecasts of the global economy, the luxury retail industry and four of the most prominent, multi-national luxury goods firms in the world. These companies included: Coach, Michael Kors, Tiffany & Co., and LVMH Moet Hennessy, whom market among the world's finest personal luxury goods from handbags, clothing and accessories to diamonds, jewelry, watches,...
Show moreA global strategic financial analysis of the luxury retail industry was conducted. The research entailed comprehensive analyses and forecasts of the global economy, the luxury retail industry and four of the most prominent, multi-national luxury goods firms in the world. These companies included: Coach, Michael Kors, Tiffany & Co., and LVMH Moet Hennessy, whom market among the world's finest personal luxury goods from handbags, clothing and accessories to diamonds, jewelry, watches, fragrances, cosmetics and wines. The macroeconomic analysis focused on factors pertinent to the luxury goods industry such as: (1) the lasting effects of the global financial crisis, our gradual emergence from the Great Recession and the impact these conditions have had on consumer spending and confidence; (2) the generational shift of consumers from the retiring baby boomers to the technologically savvy Generation Z and their unique demands for products as well as experiences; and (3) the growth and demand from emerging economies, especially China which is the globe's top luxury nationality accounting for 25% of all luxury purchases worldwide. Comprehensive financial ratio analyses, SWOT assessments, technical trends and forecasts of revenues, earnings and share prices for the four companies, resulted in recommendations to investors and advice to top management of the four firms. Luxury retail is a fascinating, recession resilient industry and it is expected to reach €1 trillion within the next 5 years. However, regardless of how successful firms in this industry have been in the past, to survive and continue to succeed, it is imperative that they remain flexible and adaptable in this ever-changing world.
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Date Issued: 2013
Identifier: CFH0004348, ucf:45005
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0004348

Title: A GOVERNANCE REFERENCE MODEL FOR SERVICE-ORIENTED ARCHITECTURE-BASED COMMON DATA INITIALIZATION: A CASE STUDY OF MILITARY SIMULATION FEDERATION SYSTEMS.
Creator: Lanman, Jeremy, Proctor, Michael, University of Central Florida
Abstract / Description: Military simulation and command and control federations have become large, complex distributed systems that integrate with a variety of legacy and current simulations, and real command and control systems locally as well as globally. As these systems continue to become increasingly more complex so does the data that initializes them. This increased complexity has introduced a major problem in data initialization coordination which has been handled by many organizations in various ways....
Show moreMilitary simulation and command and control federations have become large, complex distributed systems that integrate with a variety of legacy and current simulations, and real command and control systems locally as well as globally. As these systems continue to become increasingly more complex so does the data that initializes them. This increased complexity has introduced a major problem in data initialization coordination which has been handled by many organizations in various ways. Service-oriented architecture (SOA) solutions have been introduced to promote easier data interoperability through the use of standards-based reusable services and common infrastructure. However, current SOA-based solutions do not incorporate formal governance techniques to drive the architecture in providing reliable, consistent, and timely information exchange. This dissertation identifies the need to establish governance for common data initialization service development oversight, presents current research and applicable solutions that address some aspects of SOA-based federation data service governance, and proposes a governance reference model for development of SOA-based common data initialization services in military simulation and command and control federations.
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Date Issued: 2010
Identifier: CFE0003392, ucf:48426
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0003392

Title: A GPSS/360 Computer Model for Simulation of Automobile Traffic at Intersections.
Creator: Golovcsenko, Igor V., ,, Engineering
Abstract / Description: Florida Technological University College of Engineering Thesis
Date Issued: 1974
Identifier: CFR0011598, ucf:53135
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFR0011598

Title: A Grounded Theory Study of the Experiences of Gender and Sexually Diverse High School Students: Balancing School Ethos.
Creator: Huff, Frankie, Olan, Elsie, Kaplan, Jeffrey, Hopp, Carolyn, Brenckle, Martha, Daniels, Terri, University of Central Florida
Abstract / Description: Anti-bullying campaigns and legislation are on the rise, and school districts are fighting in favor of and against various forms of support for gay and sexually diverse (GSD) students, creating very distinct experienced ethoses in their prospective schools. At times, these ethoses stand in direct opposition of the aspirational ethoses of those same schools. The purpose of this grounded theory study is to understand how schools interact with the educational policies in place to create a...
Show moreAnti-bullying campaigns and legislation are on the rise, and school districts are fighting in favor of and against various forms of support for gay and sexually diverse (GSD) students, creating very distinct experienced ethoses in their prospective schools. At times, these ethoses stand in direct opposition of the aspirational ethoses of those same schools. The purpose of this grounded theory study is to understand how schools interact with the educational policies in place to create a balanced ethos. This study uses Charmaz's (2014) constructivist approach to grounded theory methods to answer the following questions: How, if at all, does the aspirational ethos balance with the experienced ethos in high schools for GSD students, and, how, if at all, are schools creating positive high school ethoses for GSD students? Two themes emerged from this study. The first theme, don't ask, don't tell, showed that GSD students are often expected to be silent about themselves and their issues. The second theme, policy is just a beginning, revealed that inclusive policy alone is not enough, administration must interact with these policies and GSD students. The findings of this study indicate that for schools to provide a balanced aspirational and experienced ethos for GSD students, these students must be included in the policies, actions, and interactions of the high school. Schools create a positive ethos for GSD students when the balance is achieved. This study has practical and theoretical implications for anti-oppressive educational practices and discourse regarding GSD students. ?
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Date Issued: 2015
Identifier: CFE0005809, ucf:50023
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005809

Title: A GROUNDED THEORY STUDY OF THE IMPACT OF FLORIDA SCHOOL REPORT CARDS ON HIGH SCHOOL ENGLISH LANGUAGE ARTS TEACHERS' SELF-EFFICACY AND PERCEPTIONS OF STUDENT WRITING.
Creator: Briand, Casey S, Olan, Elsie L., University of Central Florida
Abstract / Description: This study sought to uncover how the annual Florida School Report Card influences secondary English Language Arts (ELA) teachers' self-efficacy and perceptions of student writing. The study's findings suggested that ELA teachers' self-efficacy may be indirectly influenced by the School Report Card. The participants in this study suggested that they do not feel totally capable of applying the information learned from the School Report Card to their own classrooms. The teachers who participated...
Show moreThis study sought to uncover how the annual Florida School Report Card influences secondary English Language Arts (ELA) teachers' self-efficacy and perceptions of student writing. The study's findings suggested that ELA teachers' self-efficacy may be indirectly influenced by the School Report Card. The participants in this study suggested that they do not feel totally capable of applying the information learned from the School Report Card to their own classrooms. The teachers who participated in the study also reported that they have low outcome expectations when interacting with the School Report Card. They do not believe that their actions can influence the School Report Card, and suggested that they see the school grade as a moving target with changing rules they may not be able to keep up with. The School Report Card was not suggested to directly impact the participants' perceptions of student writing. Instead, the data suggested that a variety of internal and external factors influence the way teachers perceive their students' writing quality. Finally, most of the participants suggested that they view the school grade as an unfair measure of achievement, and a tool that does not take into account the quality of the learning in the school and represents the school poorly. Cultural Historical Activity Theory (CHAT) was used to situate these findings and gain a better understanding of how the School Report Card functions as a tool for teachers and administrators.
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Date Issued: 2016
Identifier: CFH2000108, ucf:46040
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000108

Title: A Grounded Theory Survey Study of Teachers Perception Perpetuating the Deficit Narrative About Marginalized Students of Color.
Creator: Austin, Cavel, Olan, Elsie, Hewitt, Randall, Jeanpierre, Bobby, Puig, Enrique, University of Central Florida
Abstract / Description: The deficit narrative about marginalized students of color attributes their failure in school to some nature of innate cognitive deficiency, cultural, social, and familial dysfunctions among other schools of thoughts. The purpose of this grounded theory study is to provide a rich description about this phenomenon and to propose theoretical pedagogical adjustments in the classroom as it relates to educating students of color. The study applies Charmaz (2014) Constructivist approach to grounded...
Show moreThe deficit narrative about marginalized students of color attributes their failure in school to some nature of innate cognitive deficiency, cultural, social, and familial dysfunctions among other schools of thoughts. The purpose of this grounded theory study is to provide a rich description about this phenomenon and to propose theoretical pedagogical adjustments in the classroom as it relates to educating students of color. The study applies Charmaz (2014) Constructivist approach to grounded theory methods to examine the following research questions: (RQ1) How do teachers' narratives about students of color depict their teaching experiences and (RQ2) How do teachers' narratives about students of color inform students learning? Two overarching themes emerged in this study: practicing color blindness impacts cultural responsiveness while perpetuate deficit thinking, and understanding cultural background stimulates sensitivity when designing curriculum for students of color. The findings of this research demonstrate teachers' deficit thinking depicts their pedagogical practices and informs students learning. The research has both practical and theoretical implications for dispelling the deficit thinking regarding students of color.
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Date Issued: 2019
Identifier: CFE0007779, ucf:52339
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007779

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