No description available.

This paper considers a study of the thermo-elastic behaviour of a disc brake during heavy braking. The work is concerned with working towards developing design advice that provides uniform heating of the disc, and equally important, even dissipation of heat from the disc blade. The material presented emanates from a combination of modeling, on-vehicle testing but mainly laboratory observations and subsequent investigations. The experimental work makes use of a purpose built high speed brake dynamometer which incorporates the full vehicle suspension for controlled simulation of the brake and vehicle operating conditions. Advanced instrumentation allows dynamic measurement of brake pressure fluctuations, disc surface temperature and discrete vibration measurements. Disc run-out measurements using non-contacting displacement transducers show the disc taking up varying orders of deformation ranging from first to third order during high speed testing. This surface interrogation during braking identifies disc deformation including disc warping, 'ripple' and the effects of 'hot spotting'. The mechanical measurements are complemented by thermal imaging of the brake, these images showing the vane and vent patterns on the surface of the disc. The results also include static surface scanning, or geometry analysis, of the disc which is carried out at appropriate stages during testing. The work includes stress relieving of finished discs and subsequent dynamometer testing. This identifies that in-service stress relieving, due to high heat input during braking, is a strong possibility for the cause of disc 'warping'. It is also seen that an elastic wave is established during a braking event, the wave disappearing on release of the brake.

Thesis (Ph. D.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Department of Systems Science and Industrial Engineering, 2009. / Includes bibliographical references.

No description available.

Students with Attention-Deficit/Hyperactivity Disorder (ADHD) are usually inattentive and disruptive in class, are at high risk for chronic academic achievement difficulties, and may develop problems in relationships with peers, parents, and teachers (DuPaul, Stoner, 2003). One of the primary goals of behavioural treatment for ADHD is to enable a student to develop adequate levels of self-control (Barkley, 1990; DuPaul & Stoner, 1994). Methods are needed in the classroom, which give the child or adolescent with ADHD, control over his or her condition and thus increased independence, more experiences with success, and increased resiliency. Listening to music has many therapeutic applications, including the development of cognitive skills such as attention and memory (Canadian Association for Music Therapy, 2006). Music is accessible to all teachers and students, and is an easy strategy to implement in classrooms. Yet, despite the knowledge that adolescents are active users of music media (North, Hargreaves, & ONeill, 2000), little research on music and ADHD participants has been completed. Through the use of a single subject case study, the purpose of this research was: look at the academic experience that an adolescent male diagnosed with ADHD faced in his life at school; and to gain a better understanding of how music could potentially affect his ability to self-regulate and cope with the detrimental effects of ADHD during in-class seat work and homework. Multiple interviews with one boy, his parents, and teachers across a 14-week period of time provided a primary source of data. Results indicated that the adolescents experiences with listening to music during school and homework increased the time that he was able to attend and concentrate. Unexpected gains included an increase in his ability to recall information during exams, and an increase in motivation, positive attitude, and mood towards school work as a result of enjoying listening to his favourite music. However, the study also involved the unexpected and disheartening discovery of clashing and competing voices that perhaps ultimately rendered the boys positive experiences with music insignificant, given the louder rule-and-order school culture. The pragmatic realities of working within a school context will need to be considered and strategically addressed if students are to benefit from practices that help even though they may be unconventional and not fully understood.

Students with Attention-Deficit/Hyperactivity Disorder (ADHD) are usually inattentive and disruptive in class, are at high risk for chronic academic achievement difficulties, and may develop problems in relationships with peers, parents, and teachers (DuPaul, Stoner, 2003). One of the primary goals of behavioural treatment for ADHD is to enable a student to develop adequate levels of self-control (Barkley, 1990; DuPaul & Stoner, 1994). Methods are needed in the classroom, which give the child or adolescent with ADHD, control over his or her condition and thus increased independence, more experiences with success, and increased resiliency. Listening to music has many therapeutic applications, including the development of cognitive skills such as attention and memory (Canadian Association for Music Therapy, 2006). Music is accessible to all teachers and students, and is an easy strategy to implement in classrooms. Yet, despite the knowledge that adolescents are active users of music media (North, Hargreaves, & ONeill, 2000), little research on music and ADHD participants has been completed. Through the use of a single subject case study, the purpose of this research was: look at the academic experience that an adolescent male diagnosed with ADHD faced in his life at school; and to gain a better understanding of how music could potentially affect his ability to self-regulate and cope with the detrimental effects of ADHD during in-class seat work and homework. Multiple interviews with one boy, his parents, and teachers across a 14-week period of time provided a primary source of data. Results indicated that the adolescents experiences with listening to music during school and homework increased the time that he was able to attend and concentrate. Unexpected gains included an increase in his ability to recall information during exams, and an increase in motivation, positive attitude, and mood towards school work as a result of enjoying listening to his favourite music. However, the study also involved the unexpected and disheartening discovery of clashing and competing voices that perhaps ultimately rendered the boys positive experiences with music insignificant, given the louder rule-and-order school culture. The pragmatic realities of working within a school context will need to be considered and strategically addressed if students are to benefit from practices that help even though they may be unconventional and not fully understood.

Submitted by AMÉRICO BIANCALANA NETO null (abiancalana@confab.com.br) on 2016-09-21T15:55:15Z No. of bitstreams: 1 DISSERTAÇÃO_Américo Biancalana Neto.pdf: 6507235 bytes, checksum: 42c17d17ef5a510dd34876071a8ff043 (MD5) / Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2016-09-26T19:52:21Z (GMT) No. of bitstreams: 1 biancalananeto_a_me_guara.pdf: 6507235 bytes, checksum: 42c17d17ef5a510dd34876071a8ff043 (MD5) / Made available in DSpace on 2016-09-26T19:52:21Z (GMT). No. of bitstreams: 1 biancalananeto_a_me_guara.pdf: 6507235 bytes, checksum: 42c17d17ef5a510dd34876071a8ff043 (MD5) Previous issue date: 2016-07-22 / Os processos tradicionais de produção de tubos API 5CT N80Q envolvem processos de bobinamento e desbobinamento, conformação por dobramento, soldagem, etapas de usinagem e expansão dos diâmetros interno e externo, tratamentos térmicos de têmpera e revenimento e endireitamento. Essas etapas são responsáveis por introduzir tensões residuais no material constituinte do tubo. Estas tensões residuais podem alcançar valores próximos aos do limite de escoamento do material base do tubo, podendo produzir distorções geométricas, falhas prematuras, baixa resistência à corrosão, e diminuição na sua capacidade de absorção de cargas em trabalho. O método mais utilizado para alívio de tensões é o tratamento térmico. Porém, a aplicação de vibrações mecânicas, (Vibratory Stress Rielif) para reduzir e redistribuir as tensões residuais em estruturas conformadas a frio e em estruturas soldadas, tem sido utilizada com sucesso em várias partes do mundo, principalmente nos Estados Unidos, China e Canada. Para verificar a viabilidade deste processo, como um método alternativo para o alivio de tensões, selecionamos um tubo API 5CT 80NQ, com diâmetro de 178 mm com 8,05 mm de espessura e 3000 mm de comprimento. Os ensaios de vibração foram executados na frequência de ressonância do tubo, através de um indutor de vibração montado no seu comprimento médio, dentro de um intervalo de tempo correspondente ao seu peso. Comparando os valores de tensões residuais existentes no tubo antes e após o tratamento de vibração conseguimos uma redução média de 16% no valor das mesmas. Para a caracterização mecânica do tubo, antes e depois do processo vibratório, foram realizados os seguintes ensaios conforme a norma API 5CT 2001: impacto Charpy “V”, ensaios de tração e dureza Rockwell C, tanto no metal base do tubo, como na região da solda. Foi realizada, também, a sua caracterização micro estrutural através, microscopia ótica, antes e depois dos ensaios de vibração. Para avaliação das tensões residuais, antes e após os ensaios de vibração, foi utilizado o método de secção longitudinal de um anel (splitting ring test) conforme a norma ASTM EN 1928-13. / The traditional production processes API 5CT N80Q pipes involve coiling and uncoiling processes the plate, conformation by bending, welding, machining steps and expansion of its internal and external diameters, heat treatment of quenching and tempering and straightening. These steps are responsible for introducing residual stresses in the material of the tube. These residual stresses can reach values close to the yield strength of the pipe`s base material and may produce geometric distortions, premature failure, low corrosion resistance and reduction its capacity of absorption loads in the work. The most widely used method for relieving stress is the heat treatment. The application of mechanical vibrations, Vibratory stress relief ( VSR), to reduce and redistribute the residual stresses in cold shaped structures and welded structures, has been used with success in various parts of the world, especially the United States, China and Canada. Thus, the mechanical vibration, Vibratory stress relief (VSR), can prove to be an interesting process to relieve stress in the tubes. To verify the feasibility of this process, as an alternative method for the relief of stresses, we selected an API 5CT 80NQ tube with a diameter of 178 mm, with 8.05 mm thickness and 3000 mm in length. Vibration tests were performed in pipe resonance frequency, via a vibration-inducing mounted at its mid-length, within a time corresponding to their weight. Comparing the values of residual stress existing in the tube before and after the vibration treatment achieved a mean reduction of 16 % in the amount thereof. For the mechanical characterization of the pipe, before and after the vibration process, the following tests were conducted according to API standard 5CT 2001: Charpy 'V', tensile tests and hardness Rockwell C, both in the metal base tube, and in the weld region. It was also carried out their microstructural characterization through optical microscopy before and after the vibration tests. To evaluate the residual stress before and after the vibration tests, we used the ring splitting test according to ASTM E1928-13.

Background: Depression and anxiety among the elderly is a problem that is widely spread. For health care workers, and especially for registered nurses, it is of great importance to find different strategies to counteract this.  Aims: This literature review aims to describe non-pharmacological measures to relieve depression and anxiety in the elderly.  Method: Search terms used were taken from Swedish MeSH and used in PubMed. All studies were randomized control studies and both authors took part in the quality review. Inclusion criteria were quantitative research, published in Swedish or English in the last 5 years. Participants were ≥60 years and either sexes or both were included. The included studies were conducted in different parts of the world. Exclusion criteria were individuals with dementia or mental illnesses other than depression and anxiety. Results:  Ten studies were included in this review, which implemented the following interventions: art therapy, detached mindfulness, meditation, music therapy and physical activity. Nine out of ten studies showed statistical significant improvement concerning levels of depression and/or anxiety when compared to baseline and control groups. Conclusion: This study indicates that several non-pharmacological measures can be used to relieve depression and anxiety.  Key words: aged, aged 80 and over, mental illness, relieving, non-pharmacological measures / Bakgrund: Depression och ångest hos äldre är ett stort problem. För vårdpersonal, och framför allt sjuksköterskor, är det av stor vikt att hitta olika strategier för att motverka detta. Syfte: Denna litteraturöversikt ämnar beskriva icke-farmakologiska åtgärder för att lindra depression och ångest hos äldre. Metod: Söktermer som användes togs från Svensk MeSH och användes i PubMed. Alla artiklar var randomiserade kontrollstudier och båda författarna deltog i kvalitetsgranskningen. Inklusionskriterierna var kvantitativa originalstudier, publicerade på svenska eller engelska inom de 5 senaste åren. Deltagarna var ≥60 år och endera eller båda kön inkluderades. De inkluderade studierna genomfördes i olika delar av världen. Exklusionskriterierna var personer med demenssjukdom eller andra psykiska åkommor utöver ångest eller depression samt kvalitativ forskning.  Resultat: Tio artiklar inkluderades i denna studie, vilka implementerade följande interventioner: konstterapi, metakognitiv terapi, meditation, musikterapi och fysisk aktivitet. Nio av de tio studierna visade statistisk signifikant förbättring gällande grad av depression och/eller ångest vid jämförelse mot studiestart samt mot kontrollgrupp.  Slutsats: Denna studie indikerar ett resultat där flera olika icke-farmakologiska åtgärder kan användas för att lindra depression och ångest.  Nyckelord: äldre, äldre över 80 år, psykisk ohälsa, lindrande, icke-farmakologiska åtgärder

Cette thèse est un comparatisme religieux entre les pentecôtistes et les nganga à Libreville (Gabon). Autour de l’imaginaire du malheur, mis en exergue par l’expression endogène du «sang de l’iguane», nos spécialistes de l’infortune proposent sur le marché des religions, des traitements pour atteindre le salut. Pour rendre compte de la Weltanschauung librevilloise, les conceptions du corps, de la santé et de la maladie ont été interrogées. Cela a permis de mettre en évidence les « destructeurs » du corps, c'est-à-dire la démocratisation de la sorcellerie et la politique du ventre, mais également les pratiques religieuses utilisées pour combattre le «sang de l’iguane». Cette étude souligne aussi les théories profanes de la maladie et leur impact sur la réinterprétation des «maladies des Blancs» et celles des «Noirs». Ici, le corps est hybride, car les sources du « sang de l’iguane » et les techniques pour le combattre dérivent du mélange des imaginaires, fruit de la rencontre coloniale. / In order to understand what is the Weltanschauung of the body and its imaginery, the health and healing habitus process, we have made a survey among the medecine men and the pentecotists and the laymen. It appears that most of them suffer of the so-called "iguana's blood". Thus, we have found the causes of those who are destroying the bodies and who are responsible of "iguana's blood” and how to fight them. The dissertation is about the folk comprehension of disease and how it is divided in the city of Libreville: into “diseases of whites” and “diseases of blacks”. The specialists of misfortune propose some treatments of the body on the religious market in order to achieve healing and prosperity of any kind. The body is seen in Libreville as a hybrid, since the causes of "iguana's blood" and the tools needed to fight it, are found in the representations of both cultures of the postcolonial world.