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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
241

Investigation of critical issues in thermal barrier coating durability

Kim, Hyungjun, January 2005 (has links)
Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Document formatted into pages; contains xviii, 212 p.; also includes graphics (some col.). Includes bibliographical references (p. 202-212). Available online via OhioLINK's ETD Center
242

Study of solid oxide fuel cell interconnects, protective coatings and advanced physical vapor deposition techniques

Gannon, Paul Edward. January 2007 (has links) (PDF)
Thesis (Ph. D.)--Montana State University--Bozeman, 2007. / Typescript. Chairperson, Graduate Committee: Max Deibert. Includes bibliographical references (leaves 74-77).
243

At-Risk Adolescent Girls: Protective Factors and Effects of a Positive Youth Development Intervention

January 2010 (has links)
abstract: Adolescence is a tumultuous time, and for those with risk factors, it can be even more difficult. This study examined the relationships among intrinsic and extrinsic protective factors such as high self-esteem, high self-efficacy, mattering to others, positive sense of identity, and healthy peer relationships in female adolescents. Additionally, the current study assessed the impact of a positive youth development intervention designed for this particular population. The potential sample consisted of adolescent girls who were students at an alternative high school in the Southwestern region of the United States. Of the 25 girls at the school, 12 participated in the study and completed pre-test instruments measuring self-esteem, self-efficacy, mattering to friends and parents, identity distress, and relational aggression. The instruments were administered before and after a positive youth development intervention of which 10 of the 12 participants attended. The intervention, Girls Circle, consisted of activities designed to foster self-acceptance, identity formation, healthy friendships, and goal setting in adolescent girls. While the study's intervention did not result in significant changes over time, several important findings emerged. Self-esteem was positively related to both mattering to friends and mattering to parents. Likewise, a negative correlation was found between relational aggression and mattering to parents. Girls who felt they were more important to friends and family had higher self esteem and were less likely to engage in covert aggression tactics such as spreading rumors and maliciously excluding peers from their social groups. These results support the literature and highlight the important interconnection of social relationships and subjective well-being. Teachers, counselors, social workers, and other helping professionals who work with adolescents need to understand these relationships and use this understanding to design and implement interventions that will best serve at-risk girls, such as those in this study. / Dissertation/Thesis / M.C. Counselor Education 2010
244

Transition-Age Youth in Out-of-Home Care: Predictors of Readiness Skills for Adulthood

Woltman, Heather Ann 25 July 2018 (has links)
Objectives: Youth who age out of the child welfare system are among the most vulnerable group of young people entering adulthood today. Unlike their generational peers, foster youth lack the familial supports necessary to postpone major life decisions and gradually enter adulthood. Although there are notable differences between Canadian and American child welfare contexts, young people exiting both systems experience a compressed transition and are tasked with quickly managing adult responsibilities. Few studies have examined pre-transition factors that correlate with adolescents’ readiness skills prior to exiting out-of-home care. Methods: This dissertation presents two studies that examine factors associated with transition-age foster youths’ readiness skills for adulthood. In the first study I used cross-sectional data (n = 278) from Illinois, United States to assess the impact of adverse childhood experiences (ACEs) on youths’ independent living skills and life domain functioning. I hypothesized that exposure to ACEs would predict lower transition readiness, and that trauma-related stress symptoms and strengths would moderate this association. In the second study I used cross-sectional data (n = 1,026) from Ontario, Canada to identify youth-, placement-, and agency-level factors that predicted youths’ self-care and financial literacy skills. I hypothesized that factors most proximal to individuals would impact readiness (e.g., academic performance, self-esteem). Results: Hierarchical regression analyses indicated that ACEs predicted lower transition readiness. Traumatic stress symptoms moderated these relations, and engagement in risky behaviours partially mediated these relations (study 1). Hierarchical linear modelling indicated that agency-level differences did not impact readiness. In contrast, general linear modelling indicated that a subset of individual- and placement-level factors did impact readiness. Specifically, higher academic performance, higher self-esteem, a greater number of developmental assets, older age, an older age of entry into care, a greater number of placement transitions, and kinship care placement predicted higher transition readiness. A greater number of socioemotional difficulties, a greater number of long-term mental and/or physical health conditions, and a lower frequency of problematic parenting practices combined with a higher frequency of effective parenting practices predicted lower transition readiness (study 2). Conclusion: Findings illustrated that although ACEs exposure predicts lower adult readiness among transition-age youth, whether youth engage in risky behaviours and possess developmental strengths may be better predictors of their readiness to age out of care (study 1). Findings also illustrated that a subset of individual- and placement-level factors predict self-sufficiency skills among transition-age youth (study 2).
245

Ecology of Adolescent Risk and Protective Factors that Contribute to Academic Success in Myanmar

January 2018 (has links)
abstract: School failure among children and adolescents has long been a serious issue in Myanmar. The recent statistics indicate that a large number of adolescents do not complete high school. As a consequence, they lose prosperous work opportunities and ability to earn an adequate income. These outcomes highlight a need to study the factors that hamper academic success of adolescents in Myanmar. Academic success is a complex concept and needs a multidimensional perspective to gain an accurate understanding of factors associated with it. Therefore, this study used an ecological risk/protective model and identified risk and protective factors that contribute to academic success of adolescents through five ecological systems of an adolescent: individual, family, peer, school, and community. This study was conducted at one government and monastic school in Myanmar. The data was collected from a sample of 50 high school students, parents and teachers through interviews and focus group discussions. This study reviewed and analyzed the data by using constant comparative method. A total of 27 distinctive ecological risk and protective factors that contribute to adolescents’ academic success in Myanmar emerged from the study. The findings of this study provided important recommendations to inform policy and practice interventions for adolescents to improve their academic performance. The findings also highlighted the influence of schools, families and communities on academic success of adolescents and a need of school social work services in Myanmar to address school failure of adolescents. Last but not least, this study contributed to the local literature by expanding the knowledge base on the concepts of ecological model and strengths-based perspective which are very new for educators and social workers in Myanmar. / Dissertation/Thesis / Masters Thesis Social Work 2018
246

Vestuário de proteção, materiais têxteis e conforto térmico: uma análise com aplicadores de agrotóxico, EPI e ambiente agrícola

Menegucci, Franciele [UNESP] 23 March 2012 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:24:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-03-23Bitstream added on 2014-06-13T20:51:33Z : No. of bitstreams: 1 menegucci_f_me_bauru.pdf: 2467289 bytes, checksum: a724035097b1349f0d7d989e664db698 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Esta pesquisa trata da relação corpo-vestuário de proteção - ambiente, com o objetivo de evidenciar as principais demandas ergonômicas do vestuário de proteção para a aplicação de agrotóxicos com foco no conforto sensorial-tátil e conforto térmico. Para isto, realizou-se um levantamento bibliográfico sobre a Ergonomia, Vestuário e Conforto Sensorial-Tátil, Conforto térmico e Avaliação do Conforto Térmico e sobre os Materiais Têxteis abordando e comparando as propriedades das fibras, fios e tecidos para selecionar o mais indicado para compor o vestuário de proteção melhorando o desempenho dos produtos em relação ao conforto, segurança, proteção, facilidade de uso e manutenção. Na pesquisa, exploratória e descritiva, realizou-se a Avaliação do Conforto Térmico com base nas aferições das variáveis climáticas do ambiente selecionando, uma plantação de laranja, e nas variáveis individuais dos participantes, 04 (quatro) aplicadores de agrotóxico, para isto contou-se com o auxílio de um software específico e das respostas dos usuários para calcular o PMV, o PPD e as sensações térmicas subjetivas. Também foi realizada uma entrevista, com base no protocolo desenvolvido pela autora, que busca compreender a Relação Usuário x EPI, Relação do Usuários x Vestuário de Proteção e Relação Usuário x Camiseta Funcinoal em 100% poliamida. Os resultados salientaram a influência do vestuário no conforto térmico, sensorial-tátil e mobilidade dos usuários. Observou-se que a camiseta em 100% poliamida é adequada e eficiente para ser utilizada como vestuário interior melhorando o desempenho do vestuário de proteção e indicada para compor vestuários de alto desempenho / This research deals with the relationship between the body - perspective clothing - environment, aiming to hhighlight the main demands of ergonomic protective clothing for pesticide application with a focus on sensory-tactile comfort and thermal comfort. For this, was performed a bibliographical survey on Ergonomics, Clothing and Comfort, Sensory Tactile Comfort and Thermal Comfort Evaluation and focusing on the Textille Materials and comparing the properties of filbers, yarns and fabrics to select the most suitable to form the protective clothing to improve the performance of products in relation to comfort, safety, security, ease of use and maintenance. In the reserach, exploratory and descriptive, held on the Termal Comfort Evaluation based on measurements of climatic variables of the environment selected, an orange plantation, and the individual variables of the participants, 04 (four) pesticide applications, for it told with the aid of specific software and users' responses to calculate the PMV, PPD and subjective thermal sensations. Also an interview was conducted, based on protocol develop by the author, who seeks to understand the User x PPE, User x Protective Apparel and User x T--shirt Functional composed by 100% polyamide. The results highlighted the influence of clothing on thermal comfort, sensory-tactile and user mobility. It was observed that the t-shirt composed by 100% polyamide is efficient and suitable for use as underwear improving the performance of protective apparel and shown to form high-performance garments
247

Estudo do tratamento combinado de radiacao ionizante e cobertura de quitosana em mamao papaia (Carica papaya L.)

CAMARGO, RITA J. de 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:49:56Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:03:08Z (GMT). No. of bitstreams: 1 10190.pdf: 8026659 bytes, checksum: a56ea24c48876e3cb2903f4a35974cf3 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
248

Contaminacao radioativa das roupas protetoras feitas de tecido e sua decontaminacao em solucoes aquosas

FUKUMORI, DAVID T. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:32:49Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:08:33Z (GMT). No. of bitstreams: 1 03529.pdf: 1961648 bytes, checksum: e06abd1b76cadfd53cd1f77421b2f96e (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
249

Ergonomic considerations for the design of women’s functional protective wear for the local construction industry

Kolisi, Bongiwe January 2015 (has links)
Thesis submitted in fulfilment of the requirements for the degree Master of Technology: Design in the Faculty of Informatics and Design at Cape Peninsula University of Technology / This study highlights the preliminary findings of an investigation into ergonomic considerations in the design of women’s protective clothing. The study investigates the validity of an assumption that there is a dearth in the product offerings of women’s protective wear that are ergonomically designed with a good fit, and offer acceptable levels of comfort for women performing outdoors in the construction industry. The research employs a qualitative research method – including interviews with key actors such as women working in the construction industry, and manufacturers. Pertinent psychological and physiological factors relating to the current protective wear are also interrogated herein. For example, the unique morphological features associated with steatopygia and gynaeoid body types are common in the sub-region, and yet not fully accommodated in the design of contextresponsive work wear. The prevailing attitudes among selected manufacturers and suppliers to motivate them to offer superior products for women in the construction industry are explored. A higher adoption rate of the redesigned women’s protective wear could correlate to reductions in downtime associated with general occupational health and safety issues; as well as an impact of low levels of comfort, protection and garment fit. Similarly, the redesigned garments could inform the development of improved protective wear for women, and ultimately facilitate higher productivity in the work environment. Subsequently, a boosted self-confidence and higher levels of motivation occasioned by a positive body image of women workers would validate the efficacy of the intended ergonomic design intervention. Lastly, the thesis discusses sociotechnical strategies for generating high fidelity data for applications in new product development for women’s protective wear. Furthermore, the findings and recommendations are discussed herein; this is made possible by the data collected.
250

Estudo do tratamento combinado de radiacao ionizante e cobertura de quitosana em mamao papaia (Carica papaya L.)

CAMARGO, RITA J. de 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:49:56Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:03:08Z (GMT). No. of bitstreams: 1 10190.pdf: 8026659 bytes, checksum: a56ea24c48876e3cb2903f4a35974cf3 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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