Syftet med föreliggande studie var att empiriskt undersöka en teoretisk modell för korrelationer mellan dispositionell mindfulness, påverkansmekanismer och idrottspsykologiska färdigheter (Birrer, Röthlin & Morgan, 2012). Modellen testas genom att (1) undersöka korrelationer mellan dispositionell mindfulness och påverkansmekanismer (Emotionsreglering, Klarsynthet och Ältande). (2) Undersöka korrelationer mellan påverkansmekanismer och idrottspsykologiska färdigheter (Motoriska färdigheter, Anspänningsreglering, Motivation och Copingförmåga). (3) Dessutom undersöktes även korrelationer mellan idrottspsykologiska färdigheter och självskattad idrottsprestation (Tävlings- respektive träningsprestation). I studien deltog 242 elitidrottare från idrottsföreningar i sydvästra Sverige. Den aktuella studien stöder Birrer med kollegors (2012) modell då resultatet (1) visade signifikanta korrelationer mellan dispositionell mindfulness och samtliga tre påverkansmekanismer. (2) Vidare visade resultatet i aktuell studie att Emotionsreglering är relaterat till bättre Copingförmåga, Inre motivation och Anspänningsreglering. Resultatet visade att bättre Klarsynthet om sitt inre känsloliv är relaterat till bättre Copingförmåga, Inre motivation och Anspänningsreglering. Resultatet visade även att mindre Ältande är relaterat till bättre Copingförmåga och Anspänningsreglering. (3) Bättre Copingförmåga och högre grad av Yttre motivation visades vara relaterat till högre självskattad tävlingsprestation. Till sist visade resultatet att bättre Copingförmåga och högre grad av Inre motivation är relaterat till högre självskattad träningsprestation. Resultatet diskuterades i relation till forskning och teoretiska referensramar. / The purpose of present study was to empirically examine a theoretical model for correlations between dispositional mindfulness, impact mechanisms and sport psychological skills (Birrer, Röthlin & Morgan, 2012). The model is tested by (1) to examine the correlations between dispositional mindfulness and impact mechanisms (Self-regulation, Clarity and Rumination). (2) To examine correlations between impact mechanisms and sport psychological skills (Motor Control Skills, Arousal Regulation Skill, Motivation and Coping Skills). (3) In addition was also correlations between skills and self-rated sport performance (competitive and training performance) examined. The study involved 242 competitive athletes from sports clubs in southwestern Sweden. The current study supports Birrer with colleagues' (2012) model when the results (1) showed significant correlations between dispositional mindfulness and all three impact mechanisms. (2) Furthermore, the results showed that Self-Regulation is related to better Coping Skills, Intrinsic Motivation and Arousal Regulation Skill. The results showed that better Clarity about its inner emotional life is related to better Coping Skills, Intrinsic Motivation and Arousal Regulation Skill. The results also showed that less Rumination is related to better Coping Skills and Arousal Regulation Skill. (3) Better Coping Skills and higher levels of External Motivation appeared to be related to higher self-rated competitive performance. Finally, the results showed that better Coping Skills and higher levels of Intrinsic Motivation are related to higher self-rated exercise performance. The results were discussed in relation to research and theoretical frameworks.

Virtual machines are gaining a growing importance in modern business IT infrastructure. They facilitate multiple operating system instances on one physical host, which provides more efficient use of the computing power of the physical host but increases the amount of network traffic as well. To avoid potential network congestion and prioritize link resource usage in a virtual machine system, we propose a bandwidth regulation scheme. Extensive evaluation demonstrates that this bandwidth regulation scheme is accurate and effective. In addition, we resolved a drastic performance degradation of the Open-iSCSI initiator. We thoroughly tested the performance of the Open-iSCSI initiator and three modified versions under two methods of setting the TCP send buffer size - statically and dynamically. Based on these results, we propose a performance tuning scheme, which can enable users of Open-iSCSI, especially those using Open-iSCSI over a long fat network, to achieve significant throughput gains.

Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-05-09T12:57:56Z No. of bitstreams: 2 Maria Silva parte 2.pdf: 542025 bytes, checksum: 740aa96791d29372c127b99e76111854 (MD5) Maria Silva parte 1.pdf: 1563936 bytes, checksum: 1f238ace30f3d3c94142f48fae509424 (MD5) / Approved for entry into archive by NELIJANE MENEZES(rubi2276@gmail.com) on 2013-05-11T00:30:31Z (GMT) No. of bitstreams: 2 Maria Silva parte 2.pdf: 542025 bytes, checksum: 740aa96791d29372c127b99e76111854 (MD5) Maria Silva parte 1.pdf: 1563936 bytes, checksum: 1f238ace30f3d3c94142f48fae509424 (MD5) / Made available in DSpace on 2013-05-11T00:30:31Z (GMT). No. of bitstreams: 2 Maria Silva parte 2.pdf: 542025 bytes, checksum: 740aa96791d29372c127b99e76111854 (MD5) Maria Silva parte 1.pdf: 1563936 bytes, checksum: 1f238ace30f3d3c94142f48fae509424 (MD5) Previous issue date: 2005 / Objetivando investigar como é desenvolvida a avaliação institucional na rede pública estadual de ensino foi escolhida para a realização da pesquisa, uma escola de Educação Básica, de médio porte, da cidade de Salvador. Tomando-se como objetivos específicos: a) identificar as características teóricas, políticas e epistemológicas da avaliação institucional e como se dinamiza esta prática na instituição; b) verificar que importância é dada ao projeto político pedagógico e ao currículo na avaliação institucional nessa Escola; c) identificar que compromissos com a aprendizagem e com o crescimento qualitativo da instituição refletem a avaliação nessa Escola; d) que fundamentação teórica norteia a avaliação da aprendizagem e; e) a que se propõem os educadores ao avaliar os seus alunos. A descrição etnográfica norteou a pesquisa com especial atenção aos etnométodos, forma como os atores institucionais se organizam para avaliar a Escola. A observação e a análise da realidade dessa Escola pelo espelho de suas singularidades contribuiu para o enriquecimento dos resultados. As principais categorias elencadas para a coleta de dados foram: 1) conceitos sobre avaliação educacional, medida e avaliação institucional, envolvendo educadores, educandos e familiares e; 2) organização do processo de tomada de decisões e da implantação de melhorias. Outras categorias emergiram do processo: 3) conceitos de avaliação da aprendizagem e de avaliação processual; 4) relações de poder na avaliação e; 5) Conselho de Classe como instância de julgamento do aluno. As posições que cada um ocupa no contexto da Instituição são fundamentais para o direcionamento dado às elaborações em torno do assunto. Enquanto os administradores estão preocupados com aspectos da avaliação da escola e dos processos educativos nela vivenciados, os professores dirigem a sua atenção ao seu trabalho com os alunos e aos resultados da aprendizagem. Os seus conceitos estão ainda atrelados à visão de avaliação como medida, embora se reportem, em muitas situações, à avaliação processual, à qualidade desse processo, à avaliação de competências e habilidades e à importância da avaliação institucional. O que se percebe, ao tentar fazer uma aproximação dos conceitos dos educadores com a produção teórica em avaliação institucional e a sua prática, é que lhes falta fundamentação e posição política adequadas ao exercício consciente de um processo que os emancipe de velhos padrões. Os alunos expressam expectativas, demonstram que se preocupam com a sua aprendizagem e constroem julgamentos de valor em torno de seus desempenhos. Os pais, inspirados nos papéis exercidos pelos atores institucionais e no funcionamento da Escola, se preocupam com a qualidade do desempenho de cada um, com as possibilidades de diálogo e de parcerias e enfatizam a aprendizagem e o crescimento dos alunos como finalidade essencial da Avaliação na Educação. A Avaliação Institucional nessa escola é ainda um processoem construção, apresenta fragilidades teóricas, epistemológicas e práticas e não há um consenso entre os educadores quanto ao seu conceito e a sua práxis. Recomendou-se como procedimento compatível com as necessidades da instituição e dos educadores, o estudo e a pesquisa em torno da temática e a construção de um programa de Avaliação Institucional nessa Escola. / Salvador

No description available.

No description available.

Much of the current literature related to injuries in sport has addressed the influence of a particular exercise intervention on a specific type of injury without considering changes in sport performance. The purpose of this research was to investigate an interdisciplinary approach to athlete development and its initial effects on injury rates and measures of performance in collegiate baseball. In October 2008, an NCAA Division I baseball team began working with a sport performance enhancement group (SPEG) which consists of a collaborative effort between sport coaches, sport medicine and sport science departments. Injury rates were calculated for each academic year from 2006/2007 through 2010/2011. As part of the athlete monitoring program provided through SPEG, peak force was measured using an isometric mid-thigh pull from 2008/2009 through 2010/2011. Team win percentage and home runs were also reported from 2003/2004 through 2010/2011. Compared to 2006/2007 and 2007/2008, injury rates during 2008/2009 decreased 40% and 16%, 2009/2010 decreased 64% and 48%, while 2010/2011 decreased 33% and 6%. Team mean allometrically scaled isometric peak force (IPFa) increased each year from 2008/2009 through 2010/2011 (200.6 N, 229.6 N, 244.2 N). IPFa during 2009/2010 and 2010/2011 were significantly greater than 2008/2009 (p = .001 and .002). Win percentage increased from 2008/2009 through 2010/2011 (47%, 53%, 63%) and the 2010/2011 win percentage was higher than any other year since 2003/2004. Total team home runs during 2009/2010 and 2010/2011 were higher than any other season since 2003/2004. These results seem to indicate that the collaborative efforts of SPEG were able to substantially reduce injury rates while increasing lab based and on-field performance.

No description available.

Organic photovoltaics (OPVs) have received tremendous attention in recent years due to their numerous attractive attributes such as, the potential for high power conversion efficiency (PCE), mechanical flexibility, and the potential for large-scale manufacturing via low-cost techniques. To date, the record PCE values for bulk-heterojunction (BHJ) OPVs exceed 18% for single-junction cells thanks to the rapid development of donors and acceptors materials for active layer. However, the progress of hole-transporting layer (HTL) systems, which is a key device component to reduce the additional performance losses of OPVs, has been limited with only a handful of materials available like PEDOT:PSS and MoOX. In this thesis, I introduce serval materials to unitize as hole-selective contact in high-performance OPVs. Firstly, the application of liquid-exfoliated two-dimensional transition metal disulfides (TMDs) is demonstrated as the HTLs in OPVs. The solution processing of few-layer WS2 suspensions was directly spun onto transparent indium-tin-oxide (ITO) electrodes yield solar cells with superior power conversion efficiency (PCE), improved fill-factor (FF), enhanced short-circuit current (JSC), and lower series resistance than devices based on PEDOT:PSS. Based on PM6:Y6:PC71BM BHJ layer, the cells with WS2 HTL exhibit the highest PCE of 17% thanks to the favorable photonic structure and reduced bimolecular recombination losses in WS2-based cells. Next, the self-assembled monolayer (SAM) namely 2PACz is utilized as hole-selective contact directly onto the ITO anode. The 2PACz modifies the work function of ITO while simultaneously affecting the BHJ layer’s morphology deposited atop. This ITO-2PACz anode is utilized in OPV with PM6:BTP-eC9:PC71BM, showing a remarkable PCE of 18.0%. The enhanced performance is attributed to reduced contact-resistance, lower bimolecular recombination losses, and improved charge transport within the BHJ layer. Lastly, the previously 2PACz SAM was functionalized with bromide functional groups, namely Br-2PACz, which is investigated as hole-extracting interlayers in OPVs. The highest occupied molecular orbital (HOMO) energy of Br-2PACz was measured at -6.01 eV, and significant changes the work function of ITO electrodes upon chemical functionalization. OPV cells based on PM6:BTP-eC9:PC71BM using ITO/Br-2PACz anodes exhibit a maximum PCE of 18.4%, outperforming devices with ITO/PEDOT:PSS (17.5%), resulting from lower interface resistance, improved hole transport, and longer carrier lifetimes.

As mindfulness is often synonymous with equanimity, the intensity of competitive mixed martial arts serves as an ideal domain in exploring the underlying cognitive process of mindfulness in enhancing performance. Within the past two decades, interest has peaked in the positive outcomes that mindfulness produces in alleviating negative symptoms in health and clinical settings. Little research exists however in exploring the cognitive processes involved in producing the potential benefits of performance enhancement. The aim of the study was to gain a better understanding of the underlying cognitive processes involved in the workings of mindfulness; exploring whether increased levels of mindfulness would be positively correlated with increased martial arts ability. Using correlational analysis and standard multivariate regression, the participating fighters’ (n=46) levels of mindfulness were analysed in relation to their mixed martial artist’s ability. Results from correlational analysis showed that overall mindfulness was positively correlated with mixed martial arts ability, as a result confirming the study’s primary hypothesis. Results from standard multivariate regression further identified a fighter’s age as being a significant predictor for mixed martial arts ability. / Mini dissertation (MA)--University of Pretoria 2016. / Psychology / MA / Unrestricted

Philosophiae Doctor - PhD / Mental skills are critical to the development of a positive mind-set in the athlete in order to develop the ability to concentrate more, focus attention, manage arousal, develop self-esteem and thereby enhance self-confidence in competitive sport. This study was an exploratory study to investigate how well Zimbabwean inter-collegiate athletes were prepared mentally and how this was handled during their participation in inter-collegiate games. The study focused specifically on just one group of athletes, netballers.