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- Title
- AN EVALUATION OF THE EFFECTS OF A LEISURE EDUCATION CURRICULUM ON DELINQUENTS' MOTIVATION, KNOWLEDGE, AND BEHAVIOR CHANGES RELATED TO BOREDOM.
- Creator
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Finn, Jr., Paul, Wan, Thomas, University of Central Florida
- Abstract / Description
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Adolescents today have more unsupervised and unstructured free time than ever before. Poor decisions by youth during periods of free time may lead to substance abuse, teen pregnancy and juvenile delinquency. The highest frequency of juvenile crime, a major social problem, occurs during the 2-4 hours following the end of the school day. Research has demonstrated the benefits of engaging adolecents in prosocial leisure activity. However, no research has studied the issues of free time and...
Show moreAdolescents today have more unsupervised and unstructured free time than ever before. Poor decisions by youth during periods of free time may lead to substance abuse, teen pregnancy and juvenile delinquency. The highest frequency of juvenile crime, a major social problem, occurs during the 2-4 hours following the end of the school day. Research has demonstrated the benefits of engaging adolecents in prosocial leisure activity. However, no research has studied the issues of free time and leisure education with a delinquent population. This paper documents the impact of a leisure education curriculum on a population of delinquent youth in a randomized experiment. The delinquent youths who received the leisure education reported higher intrinsic motivation and better use of free time. The delinquent youths also reported improved decision making related to their involvement in healthy, prosocial free time activities. Finally, the improvement in the delinquent youths' motivation influenced a significant decrease in the delinquent youths' proneness to boredom during their free time.
Show less - Date Issued
- 2006
- Identifier
- CFE0001472, ucf:47104
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001472
- Title
- Development of a nano-sensing approach and a portable prototype for real-time detection and quantification of free mercury in stream-flow: combining science and engineering in pro of the environment.
- Creator
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Chemnasiri, Warinya, Hernandez, Florencio, Kuebler, Stephen, Zou, Shengli, Uribe Romo, Fernando, Huo, Qun, University of Central Florida
- Abstract / Description
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Mercury (Hg) is a well-known hazardous environmental contaminant existing in several forms, but all are toxic to human in one way or the others. Since Hg usually settles into water polluting the environment and accumulating in living organisms, it is crucial to monitor Hg levels in the aquatic ecosystem. Although there are many well established techniques currently used to detect Hg, most of them require elaborate and time-consuming sample preparation and pre-concentration procedures, as well...
Show moreMercury (Hg) is a well-known hazardous environmental contaminant existing in several forms, but all are toxic to human in one way or the others. Since Hg usually settles into water polluting the environment and accumulating in living organisms, it is crucial to monitor Hg levels in the aquatic ecosystem. Although there are many well established techniques currently used to detect Hg, most of them require elaborate and time-consuming sample preparation and pre-concentration procedures, as well as costly and bulky equipment that limit their practical application in the field. In order to overcome the existent limitations in Hg determination methods, Hernandez and co-workers proposed the first surface Plasmon resonance (SPR) (-) based Hg sensor using gold nanorods (AuNRs) that offers high sensitivity and selectivity, attributed to the strong affinity between Au and Hg. In this dissertation, I first present my contribution to the understanding of the effect of size and aspect ratio of AuNRs on the limit of detection (LOD) and the dynamic range (DR) of the SPR-based Hg sensor using the qualitative model. In this part I demonstrate how both sensitivity and DR can be improved simultaneously via a modified wet chemistry procedure. Then, I show our approach towards the immobilization of AuNRs silane coated glass slides to expand the application of the SPR-based Hg sensor to stream-flow. Finally, I present the design and fabrication of the first real prototype of the SPR-based Hg sensor, and its application in stream-flow detection and speciation of mercury in the environment. The outcomes of my research have resulted in an innovative real-time portable Hg sensor apparatus with the desired high sensitivity, selectivity and DR to be used in stream-flow applications in Oak Ridge National Labs sites.
Show less - Date Issued
- 2015
- Identifier
- CFE0006283, ucf:51589
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006283
- Title
- Constructing and Validating an Integrative Economic Model of Health Care Systems and Health Care Markets: A Comparative Analysis of OECD Countries.
- Creator
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Helligso, Jesse, Wan, Thomas, Liu, Albert Xinliang, King, Christian, Hamann, Kerstin, University of Central Florida
- Abstract / Description
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This dissertation argues that there are three basic types of health care systems used in industrial nations: free market (private insurance and provision), universal (public insurance and private provision), and socialized (public insurance and provision). It examines the role of market forces (supply and demand) within the health care systems and their effects on health outcomes by constructing an integrative model of health care markets and policies that is lacking within the scientific and...
Show moreThis dissertation argues that there are three basic types of health care systems used in industrial nations: free market (private insurance and provision), universal (public insurance and private provision), and socialized (public insurance and provision). It examines the role of market forces (supply and demand) within the health care systems and their effects on health outcomes by constructing an integrative model of health care markets and policies that is lacking within the scientific and academic literature. The results show that, free market systems have decreased access to care, good quality of care, and are economically inefficient resulting in 2.7 years of life expectancy lost and wasted expenditures (expenditures that do not increase life expectancy) of $3474 per capita ($1.12 trillion per year in the U.S.). Socialized systems are the most economically efficient systems but have decreased access to care compared to universal systems, increased access to care compared to free market systems and have the lowest quality of care of all three systems resulting in 3 months of life expectancy lost per capita and a saving of $335 per capita. Universal systems perform better than either of the other 2 systems based on quality and access to care. The models show that health insurance is a Giffen Good; a good that defies the law of demand. This study is the first fully demonstrated case of a Giffen good. This investigation shows how the theoretically informed integrative model behaves as predicted and influences health outcomes contingent upon the system type. To test and substantiate this integrative model, regression analysis, Time-Series-Cross-Section analysis, and structural equation modeling were performed using longitudinal data provided and standardized by the Organization for Economic Cooperation and Development (OECD). The results demonstrate that universal health care systems are superior to the other two systems.
Show less - Date Issued
- 2018
- Identifier
- CFE0007335, ucf:52114
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007335
