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Ballinger, Claire. "Falls and falling as explanations concerning health and self in older people". Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310700.
Testo completo
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Chen, Tuo Yu. "The Effects of the A Matter of Balance Program on Falls, Physical Risks of Falls, and Psychological Consequences of Falling among Older Adults". Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4808.
Testo completoAbstract (sommario):
The effectiveness of the A Matter of Balance (MOB) program, a multifactorial falls prevention intervention, is uncertain. Although targeting multiple risk factors of falling at the same time seems reasonable and desirable, in that falls are often caused by several risk factors, results from previous studies investigating the effects of multifactorial falls prevention interventions are inconsistent. In addition, research shows that single factor interventions (e.g., exercise) can produce the same effects. The cost-effectiveness of multifactorial falls prevention interventions has varied across studies (e.g., Jenkyn, Hoch, & Speechley, 2012; Tinetti, Baker, et al., 1994). Despite the fact that the American Geriatrics Society and British Geriatrics Society (2001) have incorporated multifactorial falls prevention interventions into geriatric practice guidelines, more studies are needed to better understand the effects of the MOB program on falls and risk factors for falling among older adults.
The MOB program aims to reduce fear of falling by increasing self-efficacy and perceived control (Tennstedt et al., 1998). This program provides exercises to enhance older adults' physical capacities, lessons to teach seniors fall-related risk factors, and methods to enhance self-efficacy. Previous studies mainly focused on the effects of the MOB program on fear of falling and falls efficacy. However, falls, fear of falling, and physical frailty (e.g., poor balance) are all correlated. Little is known about the effects of the MOB program on falls and related physical risk factors. Meanwhile, fear of falling and falls efficacy are two constructs often used to delineate psychological consequences of falling, but there has been confusion about these two constructs. As a result, researchers have been using measures developed for falls efficacy to assess fear of falling in error. Previous study also shows that both fear of falling and falls efficacy need to be examined after intervention with separate appropriate measures(e.g., Valentine, Simpson, Worsfold, & Fisher, 2011). Nevertheless, in the research of the MOB program, studies often examined either fear of falling or falls efficacy, but not both (e.g., Tennstedt et al., 1998; Zijlstra et al., 2009). Therefore, whether the MOB program could improve both fear of falling and falls efficacy is uncertain.
This dissertation includes three studies to examine the effects of the MOB program. The first study explores whether the program could effectively prevent falls and improve physical risk factors (i.e., mobility, walking speed, and postural control) among older adults. The second study examines the psychometric properties of a modified fear of falling measure and the effects of the program on fear of falling and falls-efficacy. The third study investigates whether the effects of the MOB program on falls, mobility, walking speed, and postural control can be maintained across five months. Three studies using a comparison group design were conducted to examine each objective. Data were collected at baseline (Time 1), the conclusion of the program (Time 2), and at a 3-month follow-up (Time 3).
Overall, the studies in this dissertation show that older adults can improve their mobility, walking speed, postural control, fear of falling, and falls efficacy by participating in the MOB program but the program did not affect the total number of falls. The results also showed that older adults who received the MOB program reached their highest performance on mobility and walking speed immediately at the end of the program. However, their performance on postural control continued to improve and was the best at the 3-month follow-up.
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Stanmore, Emma. "The incidence of falls, prevalence of fear of falling and fall risk factors in adults with rheumatoid arthritis". Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/the-incidence-of-falls-prevalence-of-fear-of-falling-and-fall-risk-factors-in-adults-with-rheumatoid-arthritis(1a7750f4-36f4-4428-bb35-9498c4dbbb68).html.
Testo completoAbstract (sommario):
The objectives of the study were to determine the incidence of falls, the prevalence of fear of falling and fall risk factors and consequences in adults with rheumatoid arthritis (RA). 559 community dwelling adults with RA, aged 18 to 88 years (mean age 62; 69% female) participated in this prospective cohort study. Patients were recruited from four outpatient clinics in the Northwest of England and followed for 1 year after clinical assessment, using monthly falls calendars and telephone calls. Outcome measures included fall occurrence, reason for fall, type and severity of injuries, fractures, fall location, lie-times, use of health services and functional ability. Risk factors for falls included lower limb muscle strength, postural stability, number of swollen and tender joints, functional status, history of falling, fear of falling, pain, fatigue and medication. Data on demographics, vision, co-morbidities, history of surgery, fractures, and joint replacements were also recorded.535 participants followed for one year had a total of 598 falls. 36.4% participants (95% CI 32% to 41%) reported falling with an incidence rate of 1313/1000 person-years at risk or 1.11 falls per person. Over one third of the falls were reportedly caused by hips, knees or ankle joints giving way. Over half of all the falls resulted in moderate injuries, including head injuries (n=27) and fractures (n=26). Univariate logistic regression showed that falls risk was independent of age and gender. A history of falls in the previous one year was a strong medical fall predictor with an odds ratio (OR) for a single fall=3.3 and for multiple falls OR=4.3. Fear of falling was an important self-reported psychological predictor, with the risk increasing by 10% with each point above 7 (up to 28) in the Short FES-I score. The inability to complete the Four Test Balance Scale due to poor balance was a strong postural fall predictor (OR 2.3). The most significant functional predictor of falls was the functional Health Assessment Questionnaire score, and each additional point attained in the score (1-4) nearly doubled the risk of further falls. Multivariate logistic regression revealed that when taken in combination with other factors, a history of multiple falls in the previous one year was the most significant predictive risk factor (OR=5.3) and overall the model accounted for 71% of variation. The most significant modifiable risk factors were swollen and tender lower limb joints (hip, knee and ankle) (OR=1.7), psychotropic medication (OR=1.8) and increasing fatigue (OR=1.13) with this model accounting for 68% of variation. Adults of all ages with RA are at high risk of falls and fall-related injuries, fractures and head injuries. In clinical practice, high risk falls patients with RA can be identified by asking whether patients have fallen in the past year. The management of swollen and tender lower limb joints, fatigue and consideration of psychotropic medicines may be the most effective strategy to reduce falls in this group of patients. Fear of falling, pain, lower limb strength and poor balance are other useful clinical indicators that may be modified to prevent falls.
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Mance-Coniglio, Melissa. "Falling mythologies /". Online version of thesis, 2008. http://hdl.handle.net/1850/7750.
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Honaker, Julie Ann. "A Team Approach Risk of Falling Assessment and Remediation Program for Community Dwelling Older Adults with a Fear of Falling and Balance Disorders". University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1163703882.
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Varnadore, Heather S. "Falling rock : stories". Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/781.
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Paschoal, Lívia Maria Pinto. "Falling for lions". reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/handle/123456789/103410.
Testo completoAbstract (sommario):
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Letras/Inglês e Literatura Correspondente, Florianópolis, 2013Made available in DSpace on 2013-07-16T04:31:31Z (GMT). No. of bitstreams: 1 316542.pdf: 634699 bytes, checksum: 970c53f4277d027fecc2cf3937593e12 (MD5)
A Literatura Gótica é responsável por dar vida à criaturas que têm assombrado o sonho das pessoas e alimentado a imaginação de muitos por mais de um século. Entretanto, nenhuma dessas criaturas tivera a chance de estar no centro das atenções como o vampiro contemporâneo. Na primeira década do século XXI, Edward Cullen, o vampiro adolescente criado pela americana Stephenie Meyer em Crepúsculo (2005), capturou o coração de uma legião de jovens leitores ao redor do planeta. O personagem de Crepúsculo é responsável por fazer com que vampiros e, consequentemente a ficção gótica, receber atenção renovada por parte do público leitor, permitindo a proliferação de livros com temáticas vampirescas, especialmente aqueles que são direcionados aos jovens adultos. Edward também exemplifica uma nova personificação de vampiro que guarda pouca semelhança com Drácula, do romance homônimo de Bram Stoker, publicado em 1897. A análise das mudanças físicas e de personalidade que colocam Drácula e Edward em lados opostos da mesma moeda constitui o foco principal da presente investigação, que também se compromete a explorar as mudanças já sinalizadas em Louis e Lestat, do best-seller Entrevista com o Vampiro, de Anne Rice, em 1976. Além disso, esta pesquisa defende que Edward é um herói apesar de sua natureza vil. Nesta mudança de paradigma está, possivelmente, a explicação para a popularidade de Edward Cullen e o personagem vampiresco contemporâneo. Parece que os vampiros vieram para ficar. E não apenas sob a luz do luar
Abstract : Gothic Literature is responsible for producing creatures that have haunted people's dreams and have fostered the imagination of many for more than a century. However, none of such creatures have ever been in the spotlight as the contemporary vampire. In the first decade of the twenty-first century, Edward Cullen, the teenager vampire from American author Stephenie Meyer's literary phenomenon Twilight (2005), has captured the hearts of a generation of young readers from all over the planet. The Twilight character is responsible for making vampires, and therefore Gothic fiction receive renewed attention from the readership, allowing a proliferation of vampire-related novels, especially those that are aimed at young adults. Edward also epitomizes a new depiction of the vampire character that bears little resemblance to Dracula, from Bram Stoker's eponymous novel, published in 1897. The analysis of the physical aspects and personality traits that place Dracula and Edward on different sides of the same coin are the core of the present investigation, which is also committed to explore the changes already signalized in the Ricean vampires Louis and Lestat, from the 1976 best-seller Interview with the Vampire. In addition, this research claims that Edward is a hero despite his villainous nature. In such change of paradigm lies, arguably, the explanation for the popularity of Edward Cullen and the contemporary vampire character, signalizing that the bloodsuckers are here to stay. And not just under moonlight
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Bolidi, Elena <1988>. "L'esdebitazione del fallito". Master's Degree Thesis, Università Ca' Foscari Venezia, 2016. http://hdl.handle.net/10579/9275.
Testo completoAbstract (sommario):
Il diritto fallimentare ha subito nell’ultimo decennio sostanziali modifiche finalizzate a determinare un vero e proprio cambiamento della concezione della crisi d'impresa nonché della figura del fallito, variandone i connotati e modificando il punto di vista del legislatore del 1942.
Tra le tante novità apportate da queste riforme, quella del 2006 introduce l’istituto dell’esdebitazione. Questo istituto, già presente nei modelli legislativi americani ed europei, consiste nell’incentivante liberazione del debitore, persona fisica, dai debiti residui nei confronti dei creditori concorsuali non soddisfatti integralmente. Lo scopo di tale istituto è quello di recuperare l'attività economica del fallito per permettere un nuovo inizio, una volta azzerate tutte le posizioni debitorie.
L'obiettivo di questo elaborato è quello di delineare il quadro normativo dell'esdebitazione valutando i punti di forza e le sue criticità.
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KATO, CHIKAKO, KUNIO IDA, MORIO KAWAMURA, MASAHIRO NAGAYA, HARUHIKO TOKUDA, AKIKO TAMAKOSHI e ATSUSHI HARADA. "RELATION OF FALLS EFFICACY SCALE (FES) TO QUALITY OF LIFE AMONG NURSING HOME FEMALE RESIDENTS WITH COMPARATIVELY INTACT COGNITIVE FUNCTION IN JAPAN". Nagoya University School of Medicine, 2008. http://hdl.handle.net/2237/9648.
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Maria, Esmeralda Ponciano Coração de. "Quedas no senescente: equilíbrio e medo de cair". Bachelor's thesis, [s.n.], 2009. http://hdl.handle.net/10284/1589.
Testo completoAbstract (sommario):
Monografia apresentada à Universidade Fernando Pessoa para obtenção do grau Licenciada em FisioterapiaO medo de cair não é só uma consequência, mas também um factor de risco para a ocorrência de quedas, induzindo a uma diminuição do equilíbrio. Nos senescentes, esse tipo de ocorrência é um factor que, muito embora seja ainda bastante negligenciado, afecta de sobremaneira a qualidade das suas vidas. Desta forma, constituem objectivos do presente estudo: analisar a influência do sexo no equilíbrio e no medo de cair em senescentes não institucionalizados; por outro lado, comparar a predisposição a quedas em função do sexo, assim como, a influência da ocorrência de quedas nos últimos 12 meses no equilíbrio e no medo de cair; e, por último, averiguar e estabelecer possíveis relações entre o equilíbrio e o medo de cair. A amostra foi constituída por 40 senescentes, de ambos os sexos, não institucionalizados e com idades compreendidas entre os 65 e 89 anos. Para avaliar o equilíbrio, foi utilizado o Teste de Tinetti e, para avaliar o medo de cair, a FES (Falls Efficacy Scale). Após a avaliação e a análise dos dados, observou-se que os indivíduos do sexo masculino apresentaram um maior equilíbrio (U= 104,50; p= 0,009) e um menor medo de cair (U= 108,50; p= 0,011). Observou-se, ainda, que tanto o sexo (χ²= 0,476; p= n.s.) como o equilíbrio (U= 125; p= n.s.) e o medo de cair (U= 131; p= n.s.) não influenciam a ocorrência de quedas nos últimos 12 meses. Por último, encontrou-se uma correlação linear alta e positiva entre o equilíbrio e o medo de cair (ρ= 0,815, p=0,000). Este estudo sugere que o sexo influencia o equilíbrio bem como o medo de cair, observando-se também uma correlação linear alta entre estes dois últimos itens. Relativamente à ocorrência de quedas nos últimos 12 meses, não foram encontradas diferenças entre homens e mulheres senescentes e, aparentemente, não está associada a alterações do equilíbrio e ao eventual medo de cair. Fear of falling is not only a consequence but also a risk factor for the occurrence of falls, inducing a decrease in balance. In the elderly persons, such an occurrence is a factor, which, though still quite neglected, particularly affects their quality of life. Thus, this study aims: to analyze the influence of gender in balance and in fear of falling in non-institutionalized older people; to compare the predisposition to falls according to gender, as well as the influence of the occurrence of falls in the last 12 months upon balance and fear of falling; and, finally, to determine and establish possible links between balance and fear of falling. The sample consisted of 40 senescent, male and female, non-institutionalized and aged between 65 and 89 years. The Tinetti’s test was used to assess balance, the FES (Falls Efficacy Scale) to assess fear of falling. Data evaluation and analysis showed that males had a higher balance (U= 104,50; p= 0,009) and less fear of falling (U= 108,50; p= 0,011). It was also observed that gender (χ²= 0,476; p= n.s.) and balance (U= 125; p= n.s.) and fear of falling (U= 131; p= n.s.) did not influence the occurrence of falls in the last 12 months. Finally, there was a high and positive linear correlation between balance and fear of falling (ρ= 0,815, p=0,000). This study suggests that gender influences balance and fear of falling, being also noticeable a high linear correlation between these last two items. As for the occurrence of falls in the last 12 months, no differences were found between elderly men and women, and apparently it is not associated with changes in balance and possible fear of falling. Keywords - Aging; Balance; Fear of Falling; Falls. ii
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Justice, Rebecca Claire. "Falling through the meshwork : images of falling through 9/11 and beyond". Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7339/.
Testo completoAbstract (sommario):
This thesis considers images of the falling body after the terrorist attacks of 11 September 2001, starting with Associated Press photographer Richard Drew’s photograph of a person falling to their death from the north tower of the World Trade Center. From this specific photograph, this thesis follows various intersecting lines in what I am calling a meshwork of falling-body images. Consequently, each chapter encounters a wide range of examples of falling: from literature to films, personal websites to digital content, and immersive technologies to artworks. Rather than connecting these instances like nodes, this thesis is more concerned with exploring lines of relation and the way the image moves along these lines. This thesis will argue that the falling-body image offers an alternative topology of the attacks: as enmeshed in the unfolding lines of life of web users, artists, directors and writers alike. In this way, this thesis outlines the ways we have lived with the image of falling, and the event itself, and how we continue to experience its unfolding consequences.
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Myers, Carol A. "Falling through the cracks". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1995. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23766.pdf.
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Nieves, John A. "Ashes from Falling Stars". Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3766.
Testo completoAbstract (sommario):
This thesis is a book length collection of poetry—all original and by the author. The book has three chapters, each with a different mode of expressing the work’s overall theme: the remnants of unfulfilled wishes. The first chapter deals with ordinary or mundane manifestations of the theme. The second chapter covers extraordinary, but still feasible, variations on the theme. The final chapter deals with subconscious versions of these unfulfilled wishes. It is far more surreal than the other two chapters and exists in a sort of dream-reality.
The poetry included in this work is all free verse. There are narrative and lyric poems present, along with other experimental modes of poetry. Even though plot threads run through some individual poems, the overall collection shares only thematic unity. The work, as the title implies, seeks to call attention the fragmentation of dead dreams after hope has burned away. In a sense then, this collection could be seen as a post-modern work. The poems are arranged within the chapters to either create groupings around minithemes, or to create sharp contrast. The order represented in this collection is an attempt to maximize impact.
The cast of characters in this collection of poems is meant to be representative of the characters present in city life. There are drunks and prostitutes, mothers and fathers, lovers and ex-lovers, husbands and wives, sisters and brothers, schoolchildren, writers, grandparents, lawyers, politicians, photographers, gamblers and even corpses. These characters populate a world where unanswered wishes are as legitimate as minutes and hours as instruments to gauge the passing of lives—a poetic rendering of Earth at the beginning of the twenty-first century.
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Dotson, Holly. "A Bruised Sky Falling". ScholarWorks@UNO, 2009. http://scholarworks.uno.edu/td/1005.
Testo completoAbstract (sommario):
The following thesis is a memoir in essays. The narrative is a reflection of memory as a chaotic system. Each essay stands alone as a single memory but also is part of the larger story of the writer's life. The fragmentation of the story lends itself to what Roland Barthes called a readerly text. That is, a reader may enter the text at any point and read the chapters in an order, and by doing this, the reader creates his/her own version of the author's life. The overall narrative arch is one of self-discovery and self-destruction.
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Prinsloo, Monique. "Falling into gentle ruin". Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/12465.
Testo completoAbstract (sommario):
Includes bibliographical references.Through this research I have endeavoured to unpack the ‘whys’ and ‘hows’ of my own obsession with collecting photographs, by relating it to a theoretical framework as well as to contemporary artistic practice. I further present here examples of my own body of work to show how I have given form to my concerns.
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Hou, Joey Delilah Jennifer. "Fallible Plinths: Falling Forever". Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18984.
Testo completoAbstract (sommario):
This research is a site for thinking about contemporary art in terms of its socio-political co-dimensions, and its negotiations of difference. This thesis explores the paradoxical events, and discourses of social practice where cultural practitioners have been increasingly displaced, and marginalized. In an attempt to adequately take into account the transformative nature of human subjectivity, as fluid and plastic, this paper responds by examining a trajectory illuminated by inter-subjective practices that are integral to contemporary sculpture: early, twentieth century children's playgrounds, free play, as an expressive performance of support, social rituals that gesture toward a communality; and the implicit boundaries instated. It draws this spatial experimentation to explore how a more autonomous space, and a safe(r) space can be activated in a community/or in an institutional gallery setting. This is explored via models of supportive/supplemental exhibition practices - such as that of Wu Tsang, and Palle Nielsen - who build infrastructures of support for free play, and democratic dialogue. This research is informed by the difficulties of forming ethical, and radically democratic spaces through an investment in aligning the notions of ‘play’, and ‘safe(r) spaces’ in the gallery context. It also unfolds around the limits of an exhibition space as a play space, and performance stage. In this process, the presentation of a historical spectre of fallibility in Modern, and contemporary reiterations of Social Practices is explored as a politically charged aesthetic. In doing so this research hopes to encourage the recognition of alterity, and singularity within an institutional context (space of observation). This is an appeal for redress, the desire to facilitate the play of the imagination, and to uphold radical and critical play spaces - to give place to alternative futures and dwellings.
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Walter, Klaus. "Analyse der Beziehung zwischen den Kosten für Tierarzt und Medikamente in der Milchviehhaltung und der Produktionstechnik, dem Futterbau, der Arbeitswirtschaft sowie der Faktorausstattung ausgewählter norddeutscher Betriebe". Braunschweig FAL, 2004. http://www.fal.de/dokumente/fallit/zi033316.pdf.
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White, Ursula. "Concern about falling in people with age-related macular degeneration". Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/201804/1/Ursula_White_Thesis.pdf.
Testo completoAbstract (sommario):
Concern about falling (CF) is a significant health issue among older people, leading to activity restriction, physical decline, and increased falls risk. Age-related macular degeneration (AMD) is the leading cause of irreversible vision loss among older people, yet little is known about CF in this population. High levels of CF were demonstrated among those with AMD, predicted by reduced visual function, and other physical and psychological factors. Over a 12-month period, CF increased, more so than in general older populations. These results provide an important basis for developing interventions to manage excessive CF, promote activity participation and reduce falls risk.
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Hainbuch, Friedrich. "Grip strength training prevents falling /". Aachen : Shaker, 2008. http://d-nb.info/988058014/04.
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Kaminski-Coughlin, Ian Perry. "Demalling, remalling, its all falling". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/58382.
Testo completoAbstract (sommario):
Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 2010.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 75-76).
Victor Gruen's reliance on architecture of consumer consumption to construct the "crystallization points" of social, cultural life in the suburbs has failed. We see through history the decline of architectural quality and importance given to public space. (By the time we get to Bedford NH in 68 it's really bad.) Gruen's principles of introversion and enclosure are discredited for the production of public space. Yet, public space has a very limited existence in America today (stations, museums, parks, churches). Gruen's dream of bringing European city living to America has long faded. But Americans do engage in leisure, in fact more than ever. The twist is that these are essentially private, individual activities. This suggests that to make public space useful for everyday leisure there could be such a thing as a private (as in intimacy not ownership) public space. The mall is flipped. The original exterior walls are retained, supported, and buttressed as a vital register and material action point for the reversal. Working through Debord in Society of the Spectacle, this thesis highlights the structures of pseudo needs and desires created by our self-justifying economy of consumption. It serves to make clear our unconscious dependence and thus break it.
by Ian Perry Kaminski-Coughlin.
M.Arch.
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Luciani, Federica <1991>. "L'esercizio provvisorio dell'impresa del fallito". Master's Degree Thesis, Università Ca' Foscari Venezia, 2016. http://hdl.handle.net/10579/7922.
Testo completoAbstract (sommario):
Con il presente elaborato si intende analizzare l’istituto dell’esercizio provvisorio dell’impresa del fallito. Il lavoro si articola in tre parti principali, in cui sono suddivisi i diversi capitoli. La prima parte è dedicata ad un’analisi riguardante l’evoluzione del diritto fallimentare nella storia, dal 1882 ai giorni d’oggi, ponendo particolare enfasi sul cambiamento avvenuto con la riforma del 2006 e sul passaggio da una visione pubblicistica ad una visione privatistica del fallimento. Nella parte centrale dell’elaborato ci si focalizza sull’analisi dell’art. 104 L. F. (Esercizio provvisorio dell’impresa del fallito), analizzandone i vari i commi dal punto di vista della dottrina e della giurisprudenza. Da ultimo, con la parte finale si analizza l’istituto dell’esercizio provvisorio nell’ambito delle società sportive, focalizzandosi in particolare sul recente caso del fallimento del Parma Calcio.
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Gambaro, Eleonora. "“Healthy aging" goal: the complex associations between senile age depression, fear of falling and risk of falls. A systematic review and meta-analysis of the literature". Doctoral thesis, Università del Piemonte Orientale, 2022. http://hdl.handle.net/11579/142901.
Testo completoAbstract (sommario):
Introduction: Depression rates in older people worldwide vary from 10% to 15% of community-dwelling older persons. The high incidence of falls and the so-called fear of falling (FOF), with a prevalence ranging from 20% to 85%, are two other problems related to depression in old age; it was initially considered a post- fall syndrome, which later as a fall-independent event.
Aims: Study aims to conduct a systematic review and meta-analysis to bridge the existing gap in literature about the association between depressive symptomatology, FOF, use of antidepressant therapy and falls, also identifying a possible effect of the study quality on the outcome. Methods: The selection of studies was carried out between May 20, 2020, and July 27, 2020 and only observational clinical trials, written in English, with participants aged more or equal to 60 years affected by diagnosis of depression or treatment for depression mentioned both as a clinical diagnosis in older patient, and as a predictor/consequence of falls were included. The systematic review was performed according to the PRISMA guidelines for reporting systematic reviews and meta-analysis, and the protocol was recorded in the PROSPERO.
Results and discussion: The screening process led to the inclusion of 18 articles. Many of the studies showed that depression caused the subsequent increase in the number of falls, but no association between depression and falls, in contrast to other review and meta- analysis works: our work includes a substantial number of studies, with a relatively recent publication date, including patients with depression, clearly evaluating the association between depression and falls. Results all seem to confirm the interdependent association between the presence of FOF and the risk of fall, despite the high percentage of cross-sectional studies prevents inferring on the direction of the association. Therapeutic interventions aimed at decrease rate of falls reducing depressive symptoms and FOF.
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Landreh, Konrad. "Manuel de Fallas Ballettmusik /". Laaber : Laaber-Verlag, 2004. http://catalogue.bnf.fr/ark:/12148/cb39247821n.
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Miller, William C. "Falling, fear of falling and balance confidence among individuals with lower limb amputation, prevalence and consequence". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ58180.pdf.
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Cerroni, Lawlor Jacqueline. "Following Fallis: A Literary Walk with "The Best Laid Plans"". Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22926.
Testo completoAbstract (sommario):
Lingering in the topic of literary engagement, this article follows a reader enthralled by words and the significant non-space where fiction and reality intersect. Using Terry Fallis’ political satire “The Best Laid Plans,” a physical map of the reading is followed as I amble through the Ottawa sites depicted in the novel. In this literary pilgrimage, reading is considered as a corporeal (re)action with a series of educative affects. Contrasting this experience with common in-school reading practices, this narrative encourages the honouring of the individualized relationship between reader and text as well as highlighting the pedagogical value of dallying in a work of fiction. Drawing on concepts of spatiality, I contemplate the notion of the home city as a familiar and yet capricious place, made more significant by a fantastic connection. Reading in significant spaces has a lasting, sprawling outcome whereby text, place and reader are all affected.
26
Chen, Jon Adam. "I write what we like: A textual analysis of Fallist microblogging". Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/28358.
Testo completoAbstract (sommario):
Fallists belong to a constellation of radical student activist movements that pledge to disturb and reimagine South African society. Rather than restricting themselves to coordinated forms of collective action, Fallists’ advance their “revolution-as-becoming” within a context of everyday resistance (Haynes & Prakash, 1991; Molefe, 2015). In this dissertation, I propose that Fallists form an “emerging networked counterpublic” made up of individual activists that enact everyday forms of resistance on Twitter (Jackson & Foucault Welles, 2016:399). This dissertation explores the use of Twitter by a microblogger who has emerged organically as a “crowdsourced elite” among Fallists (Papacharissi & de Fatima Oliveira, 2012). I contend that this microblogger exemplifies the repertoires of communication and resistance that pervade within Fallist networks on Twitter (Jackson & Foucault Welles, 2016). The microblogger is identified through methods of observation and social network analysis (SNA). “#whitetip,” a Twitter hashtag network that exemplifies Fallist communication and resistance, informs the interpretive content analysis that follows. This analysis is conducted on the tweets that the microblogger broadcast between 1 April and 30 September 2016. Tweets are categorised according to “evaluative frames” that emerged inductively during the course of analysis. I find that “resentment,” “pride and care,” and “play” made up the vast majority of evaluative frames. The microblogger employs the platform in a manner that disturbs dominant understandings of public sphere communication: the microblogger’s tweets are evaluative rather than deliberative, and assert a marginal, embodied subjectivity (Papacharissi, 2014; Warner, 2002).
27
DeMille, Gregory John. "Unexpected events while manually falling trees". Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44138.
Testo completoAbstract (sommario):
To date, the forest industry has relied on incident data in the form of fatality and serious injury statistics to improve safety in manual tree falling. These data are limited in their ability to improve falling safety. Thus, it is necessary to record another class of incident data to help gain insight into the difficulty (or danger) of falling trees. This study used a system of conditions (management requiring conditions) that are reported by the faller before a tree was felled and an assessment by the faller of whether the tree deviated from the intended plan (unexpected event) to determine if the frequency of unexpected events was correlated with site specific factors or the frequency of management requiring conditions encountered. In total, 1292 falling observations were collected during 86 one-hour observation periods.
In this study it was found that there were significant differences between fallers in the frequency of management requiring conditions reported; however, other than the presence of an adjacent standing tree with falling cuts present (cut-up tree), the management requiring conditions were not good predictors of whether an unexpected event would occur. The likelihood of an unexpected event occurring was found to be correlated with terrain type, ground slope, stump diameter, and the presence of a cut-up tree. Overall, 6.9 % of the falling observations had an unexpected event occur. Of particular note, 1.2% of the observations had an unexpected event occur with a severity code 2 or 3, which indicates it was more than normal variation in falling.
Given the uncertainty that a faller is exposed to when cutting into a tree, a major focus on faller safety must consider how to help the faller to be mentally and physically ready to adapt to changing conditions while working on a tree. The results indicating that all fallers who participated in this study had unexpected events, and that management requiring conditions were not good predictors of unexpected events, demonstrates that data collected at the harvest planning phase (often years before falling) will not be very effective at predicting unexpected events during falling.
28
Santos, João Pereira dos. "Portugal Telecom: not everything is falling". Master's thesis, NSBE - UNL, 2012. http://hdl.handle.net/10362/9888.
Testo completo
29
Samanta, Arghya. "Falling film over a porous medium". Paris 6, 2012. http://www.theses.fr/2012PA066716.
Testo completoAbstract (sommario):
Un film liquide s'écoulant sur un milieu poreux saturé sous l'action des forces gravitationnelles est étudié pour des valeurs faible à modérée du nombre de Reynolds. Le but de cette étude est de comprendre comment les propriétés de la paroi poreuse modifie la dynamique complexe des ondes à la surface du film. Trois approches différentes ont été envisagées: (i) une modélisation unilatérale où la couche poreuse est remplacée par une condition de glissement, (ii) une approche à un domaine pour lequel les milieux poreux et liquide sont combinés en un seul domaine composite, (iii) une approche à deux domaines où les couches poreuses et liquide sont reliées par des conditions aux limites avec saut de contraintes. Les ondes linéaires sont étudiées à l'aide des équations de Orr-Sommerfeld, et les ondes non linéaires ont été calculées dans le cadre de l'approximation de couche limite avec une technique aux résidus pondérés. Un modèle de type Saint-Venant constitués de deux équations d'évolution couplées pour l'épaisseur du film h et le débit local q a été formulé. Augmenter la perméabilité de la paroi a un effet déstabilisatant près du seuil de l'instabilité primaire, mais cet effet est opposé plus loin du seuil. Dans le régime non linéaire, des ondes progressives ont été calculées et comparées aux simulations numériques directes lorsque le support poreux est remplacé par une condition de glissement avec une excellente concordance. L'amplitude des ondes augmente avec la perméabilité, ce qui s'accompagne d'une intensification des zones de recirculation au sein des ondes solitaires, ainsi que d'une intensification des régions de contre-écoulement au sein des ondes capillairesA liquid film flowing over a saturated porous medium under the action of gravitational forces is studied for low to moderate values of the Reynolds number. The main purpose is to understand how the material properties of the permeable porous wall modifies the complex wave dynamics that develops on the film. Three different approaches have been considered: (i) a one-sided modeling where the porous layer is replaced by a slippery solid boundary, (ii) a one-domain approach for which porous and fluid media are combined into a single composite medium, (iii) a two-domain approach where the porous and liquid layers are connected by jump boundary conditions. Linear waves are studied under the basis of Orr-Sommerfeld boundary value problem and nonlinear waves have been considered within the framework of the boundary layer approximation together with a weighted residual technique. Depth-averaged models consisting of two coupled evolution equations for the film thickness h and the local flow rate q are derived. Increasing the permeability of the wall has a destabilizing effect near the onset of a primary instability but is stabilizing far from the onset. In the nonlinear regime, traveling wave (TW) solutions have been computed and compared to DNSs when the porous medium is replaced by a slippery boundary with an excellent agreement. Amplitude of TW solutions increase with the permeability, which is accompanied by an intensification of the recirculation region in humped waves, and an intensification of backflows in the capillary region of waves
30
Parsons, Michael S. "Sumner falls". Thesis, Boston University, 2012. https://hdl.handle.net/2144/12582.
Testo completoAbstract (sommario):
Thesis (M.F.A.)--Boston University
Please note: creative writing theses are permanently embargoed in OpenBU. No public access is forecasted for these. To request private access, please click on the locked Download file link and fill out the appropriate web form.
31
Hainbuch, Friedrich [Verfasser]. "Grip strength training prevents falling / Friedrich Hainbuch". Aachen : Shaker, 2008. http://d-nb.info/1161313400/34.
Testo completo
32
Bustamante, John Gabriel. "Falling-film evaporation over horizontal rectangular tubes". Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52296.
Testo completoAbstract (sommario):
The present study is the first investigation of falling-film evaporation over horizontal rectangular tubes. This geometry is representative of the external profile
of microchannel tubes. Incorporating these designs into shell-and-tube heat exchangers has the potential to provide compact, high-performance components for a wide
range of applications. This fluid flow was investigated experimentally, targeting three areas: measurements of heat transfer coefficients, quantification of flow
characteristics, and the performance of flow distributors. Falling-film evaporation experiments were conducted using water on a rectangular test section with
dimensions of 203 × 1.42 × 27.4 mm (length × width × height), measuring heat transfer coefficients over a range of saturation temperatures, test section spacings,
heat fluxes, and film Reynolds numbers. This was supported by a flow visualization study that quantified droplet and wave parameters using image analysis of high
speed videos. Finally, the performance of eight liquid distributors, which are used to establish falling-film flows, was quantified and the size of the generated
droplets and jets was measured. Three models were developed to predict the flow regime, wetted tube area, and heat transfer coefficient. The flow regime model is
based on a thermodynamic analysis, while the wetted tube area is found with a hydrodynamic model based on idealized flow assumptions. Finally, the heat transfer
model relies on a relationship with the classic Nusselt (1916) film theory. Each of these models demonstrated good agreement with the experimental data, as well as
trends in the literature. The increased understanding of falling-film evaporation gained in this study will enable the accurate design of shell-and-tube heat
exchangers with microchannel tubes.
33
Clark, Wayne William Philip. "The interfacial characteristics of falling film reactors". Thesis, University of Nottingham, 2001. http://eprints.nottingham.ac.uk/14303/.
Testo completoAbstract (sommario):
Falling film reactors are a very effective geometry in which to carry out fast exothermic gas-liquid reactions, because they allow easy removal of the heat produced. To optimise and improve falling film reactors, soundly based physical models are required. Existing models assume a flat liquid film combined with empirically-determined mass transfer coefficients, but there is growing evidence that this is unsatisfactory, since the interface is dominated by ripples and larger disturbance waves which have a significant effect on the mass and heat transfer rates through and into the film. The main objective of this study was the better understanding through experimental study of the interfacial characteristics of liquid falling films in the presence of a co-current down flow of air, with emphasis on the physical and hydrodynamic conditions encountered in current falling film reactor technology, so that the information obtained can be implemented in the enhancement of falling film reactor modelling. The liquids chosen were water, for validation of the measurement techniques through comparison with the literature, and two common falling film sulphonation reactor feedstocks; dodecylbenzene and ethoxylated alcohol. The experimental study consisted of film thickness and disturbance wave celerity measurements in a purpose built flow facility with a flat plate flow surface. A novel spatial film thickness measurement technique, the Light Absorption Imaging Technique (LAIT), was developed to give unparalleled spatial information on the interfacial characteristics of liquid films. A computer algorithm-based technique has been developed for categorisation of the spatial film data obtained by LAIT into substrate and disturbance wave regions, from which globally averaged characteristics of the interfacial structure have been obtained. Disturbance wave celerity measurements were obtained utilising the cross-correlated output signal from two light sources and a manual time-of-flight measurement technique using the images from a high-speed video camera. The study has provided a comprehensive set of data on the hydrodynamic structure of the interface, with and without the influence of a co-current down flow of air, for both water and actual sulphonation feed stocks as the liquid phase. The dramatic influence of both flow conditions and physical properties on interfacial characteristics has been demonstrated In particular, a transition has been observed of the disturbance wave structures in falling films due to the influence of a co- current airflow. Differences in the disturbance wave structure have been identified between the organic and water films after this transition.
34
Reed, Hillary Nicole. "Failing, Falling, Flying, and the Knowledge “Gap”". The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492005385494479.
Testo completo
35
Saiz, Adalid Luis José. "Fallos intermitentes: análisis de causas y efectos, nuevos modelos de fallos y técnicas de mitigación". Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/59452.
Testo completoAbstract (sommario):
[EN] From the first integrated circuit was developed to very large scale integration (VLSI) technology, the hardware of computer systems has had an immense evolution. Moore's Law, which predicts that the number of transistors that can be integrated on a chip doubles every year, has been accomplished for decades thanks to the aggressive reduction of transistors size. This has allowed increasing its frequency, achieving higher performance with lower consumption, but at the expense of a reliability penalty. The number of defects are raising due to variations in the increasingly complex manufacturing process.
Intermittent faults, one of the fundamental issues affecting the reliability of current and future digital VLSI circuits technologies, are studied in this thesis. In the past, intermittent faults have been considered the prelude to permanent faults. Nowadays, the occurrence of intermittent faults caused by variations in the manufacturing process not affecting permanently has increased. Errors induced by intermittent and transient faults manifest similarly, although intermittent faults are usually grouped in bursts and they are activated repeatedly and non-deterministically in the same place. In addition, intermittent faults can be activated and deactivated by changes in temperature, voltage and frequency.
In this thesis, the effects of intermittent faults in digital systems have been analyzed by using simulation-based fault injection. This methodology allows introducing faults in a controlled manner. After an extensive literature review to understand the physical mechanisms of intermittent faults, new intermittent fault models at gate and register transfer levels have been proposed. These new fault models have been used to analyze the effects of intermittent faults in different microprocessors models, as well as the influence of several parameters.
To mitigate these effects, various fault tolerance techniques have been studied in this thesis, in order to determine whether they are suitable to tolerate intermittent faults. Results show that the error detection mechanisms work properly, but the error recovery mechanisms need to be improved.
Error correction codes (ECC) is a well-known fault tolerance technique. This thesis proposes a new family of ECCs specially designed to tolerate faults when the fault rate is not equal in all bits in a word, such as in the presence of intermittent faults. As these faults may also present a fault rate variable along time, a fault tolerance mechanism whose behavior adapts to the temporal evolution of error conditions can use the new ECCs proposed.[ES] Desde la invención del primer circuito integrado hasta la tecnología de muy alta escala de integración (VLSI), el hardware de los sistemas informáticos ha evolucionado enormemente. La Ley de Moore, que vaticina que el número de transistores que se pueden integrar en un chip se duplica cada año, se ha venido cumpliendo durante décadas gracias a la agresiva reducción del tamaño de los transistores. Esto ha permitido aumentar su frecuencia de trabajo, logrando mayores prestaciones con menor consumo, pero a costa de penalizar la confiabilidad, ya que aumentan los defectos producidos por variaciones en el cada vez más complejo proceso de fabricación. En la presente tesis se aborda el estudio de uno de los problemas fundamentales que afectan a la confiabilidad en las actuales y futuras tecnologías de circuitos integrados digitales VLSI: los fallos intermitentes. En el pasado, los fallos intermitentes se consideraban el preludio de fallos permanentes. En la actualidad, ha aumentado la aparición de fallos intermitentes provocados por variaciones en el proceso de fabricación que no afectan permanentemente. Los errores inducidos por fallos intermitentes se manifiestan de forma similar a los provocados por fallos transitorios, salvo que los fallos intermitentes suelen agruparse en ráfagas y se activan repetitivamente y de forma no determinista en el mismo lugar. Además, los fallos intermitentes se pueden activar y desactivar por cambios de temperatura, tensión y frecuencia. En esta tesis se han analizado los efectos de los fallos intermitentes en sistemas digitales utilizando inyección de fallos basada en simulación, que permite introducir fallos en el sistema de forma controlada. Tras un amplio estudio bibliográfico para entender los mecanismos físicos de los fallos intermitentes, se han propuesto nuevos modelos de fallo en los niveles de puerta lógica y de transferencia de registros, que se han utilizado para analizar los efectos de los fallos intermitentes y la influencia de diversos factores. Para mitigar esos efectos, en esta tesis se han estudiado distintas técnicas de tolerancia a fallos, con el objetivo de determinar si son adecuadas para tolerar fallos intermitentes, ya que las técnicas existentes están generalmente diseñadas para tolerar fallos transitorios o permanentes. Los resultados muestran que los mecanismos de detección funcionan adecuadamente, pero hay que mejorar los de recuperación. Una técnica de tolerancia a fallos existente son los códigos correctores de errores (ECC). Esta tesis propone nuevos ECC diseñados para tolerar fallos cuando su tasa no es la misma en todos los bits de una palabra, como en el caso de los fallos intermitentes. Éstos, además, pueden presentar una tasa de fallo variable en el tiempo, por lo que sería necesario un mecanismo de tolerancia a fallos cuyo comportamiento se adapte a la evolución temporal de las condiciones de error, y que utilice los nuevos ECC propuestos.
[CAT] Des de la invenció del primer circuit integrat fins a la tecnologia de molt alta escala d'integració (VLSI), el maquinari dels sistemes informàtics ha evolucionat enormement. La Llei de Moore, que vaticina que el nombre de transistors que es poden integrar en un xip es duplica cada any, s'ha vingut complint durant dècades gràcies a l'agressiva reducció de la mida dels transistors. Això ha permès augmentar la seua freqüència de treball, aconseguint majors prestacions amb menor consum, però a costa de penalitzar la fiabilitat, ja que augmenten els defectes produïts per variacions en el cada vegada més complex procés de fabricació. En la present tesi s'aborda l'estudi d'un dels problemes fonamentals que afecten la fiabilitat en les actuals i futures tecnologies de circuits integrats digitals VLSI: les fallades intermitents. En el passat, les fallades intermitents es consideraven el preludi de fallades permanents. En l'actualitat, ha augmentat l'aparició de fallades intermitents provocades per variacions en el procés de fabricació que no afecten permanentment. Els errors induïts per fallades intermitents es manifesten de forma similar als provocats per fallades transitòries, llevat que les fallades intermitents solen agrupar-se en ràfegues i s'activen repetidament i de forma no determinista en el mateix lloc. A més, les fallades intermitents es poden activar i desactivar per canvis de temperatura, tensió i freqüència. En aquesta tesi s'han analitzat els efectes de les fallades intermitents en sistemes digitals utilitzant injecció de fallades basada en simulació, que permet introduir errors en el sistema de forma controlada. Després d'un ampli estudi bibliogràfic per entendre els mecanismes físics de les fallades intermitents, s'han proposat nous models de fallada en els nivells de porta lògica i de transferència de registres, que s'han utilitzat per analitzar els efectes de les fallades intermitents i la influència de diversos factors. Per mitigar aquests efectes, en aquesta tesi s'han estudiat diferents tècniques de tolerància a fallades, amb l'objectiu de determinar si són adequades per tolerar fallades intermitents, ja que les tècniques existents estan generalment dissenyades per tolerar fallades transitòries o permanents. Els resultats mostren que els mecanismes de detecció funcionen adequadament, però cal millorar els de recuperació. Una tècnica de tolerància a fallades existent són els codis correctors d'errors (ECC). Aquesta tesi proposa nous ECC dissenyats per tolerar fallades quan la seua taxa no és la mateixa en tots els bits d'una paraula, com en el cas de les fallades intermitents. Aquests, a més, poden presentar una taxa de fallada variable en el temps, pel que seria necessari un mecanisme de tolerància a fallades on el comportament s'adapte a l'evolució temporal de les condicions d'error, i que utilitze els nous ECC proposats.
Saiz Adalid, LJ. (2015). Fallos intermitentes: análisis de causas y efectos, nuevos modelos de fallos y técnicas de mitigación [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/59452
TESIS
36
Fluixà, Pelufo Alba. "Les falles com a agents culturals. Anàlisi de l'activitat cultural de les falles de València". Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/125472.
Testo completoAbstract (sommario):
[ES] El objetivo de este estudio ha sido investigar la actividad cultural de las comisiones falleras de la localidad de Valencia, su tipología y forma de gestión, así como analizar su potencial como agentes culturales. Se ha empleado una combinación de investigación cuantitativa (cuestionarios de respuesta cerrada) y cualitativa (entrevistas personales en profundidad y grupo de discusión). Esta metodología ha permitido obtener, por un lado, datos objetivos traducibles a gráficas y porcentajes que radiografían por primera vez todos los aspectos de este fenómeno y, por otra parte, información no recogida antes sobre las motivaciones, el proceso de trabajo o las dificultades con que se han encontrado los que la han llevado a cabo.[CAT] L'objectiu d'aquest estudi ha estat investigar l'activitat cultural de les comissions falleres de la localitat de València, la seua tipologia i forma de gestió, així com analitzar el seu potencial com a agents culturals. S'ha emprat una combinació d'investigació quantitativa (qüestionaris de resposta tancada) i qualitativa (entrevistes personals en profunditat i grup de discussió). Aquesta metodologia ha permès obtenir, per una banda, dades objectives traduïbles a gràfiques i percentatges que radiografien per primera vegada tots els aspectes d'aquest fenomen i, per altra banda, informació no recollida abans sobre les motivacions, el procés de treball o les dificultats amb què s'han trobat els qui l'han dut a terme.
[EN] The objective of this study has been to investigate the cultural activities of València's falles committees, its typology and management and also to analyse its potential as cultural agents. A combination of quantitative research (survey with closed answer questions) and qualitative research (personal in depth interviews and group discussion) has been used. This methodology has allowed us to obtain, on the one hand, objective information that can be translated into statistics and graphics that, for the first time, analyse all the aspects of this phenomenon and, on the other hand, unprecedented information about the motivations, work process and difficulties of those who have carried it out.
Fluixà Pelufo, A. (2019). Les falles com a agents culturals. Anàlisi de l'activitat cultural de les falles de València [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/125472
TESIS
37
Baraza, Calvo Juan Carlos. "Contribución a la validación de sistemas complejos tolerantes a fallos en la fase de diseño. Nuevos modelos de fallos y técnicas de inyección de fallos". Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/2345.
Testo completoAbstract (sommario):
En el diseño de sistemas informáticos (y en particular, de aquéllos en los que, por las características del servicio que prestan, un mal funcionamiento puede provocar pérdida de vidas humanas, perjuicio económico, suspensión de servicios primordiales, etc.), se establece como prioridad esencial conseguir que funcionen correctamente durante el mayor tiempo posible y con un elevado nivel de eficacia. Los sistemas que regulan servicios críticos disponen de unos mecanismos especiales que les proporcionan una cierta inmunidad a la ocurrencia de averías que puedan causar un cese o deterioro del servicio prestado. Por ello, se les denomina Sistemas Tolerantes a Fallos, o STF. Se define el concepto de Confiabilidad como un conjunto de funciones (o atributos) que permiten cuantificar la calidad del servicio prestado en cuanto a averías producidas, y en consecuencia, el grado de confianza que el usuario puede depositar en el sistema. Al desarrollar cualquier sistema tolerante a fallos es preciso validarlo, o lo que es lo mismo, cuantificar sus parámetros de Confiabilidad. Entre los numerosos métodos y técnicas existentes para validar sistemas tolerantes a fallos, esta tesis se ha centrado en un método de validación experimental: las técnicas de inyección de fallos basadas en la simulación de modelos en VHDL. Las principales ventajas de este conjunto de técnicas son que se pueden aplicar en la fase de diseño del sistema y que permiten acceder a cualquier elemento del modelo del sistema. Por contra, presentan el inconveniente de que, sobre todo en modelos de sistemas complejos, la inyección de los fallos supone un elevado coste temporal. Sin embargo, sus importantes ventajas las hacen lo suficientemente atractivas como para ser utilizadas al menos como técnica complementaria de otras más utilizadas por su bajo coste y sencillez de implementación, como SWIFI (software implemented fault injection). Un aspecto muy importante de las técnicas de inyección de fallos mediante simulaciBaraza Calvo, JC. (2003). Contribución a la validación de sistemas complejos tolerantes a fallos en la fase de diseño. Nuevos modelos de fallos y técnicas de inyección de fallos [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/2345
Palancia
38
Vaswani, Neela. "What falls between". College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3479.
Testo completoAbstract (sommario):
Thesis (Ph. D.) -- University of Maryland, College Park, 2006.Thesis research directed by: American Studies. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
39
Dendinger, Emily Jean. "For the falls". Thesis, University of Iowa, 2014. https://ir.uiowa.edu/etd/4608.
Testo completo
40
Holmes, Eric. "Falls for Jodie". Thesis, University of Iowa, 2016. https://ir.uiowa.edu/etd/3102.
Testo completo
41
Amico, Peter joseph. "Damage Reduction Strategies for a Falling Humanoid Robot". Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78765.
Testo completoAbstract (sommario):
Instability of humanoid robots is a common problem, especially given external disturbances or difficult terrain. Even with the robustness of most whole body controllers, instability is inevitable given the right conditions. When these unstable events occur they can result in costly damage to the robot potentially causing a cease of normal functionality. Therefore, it is important to study and develop methods to control a humanoid robot during a fall to reduce the chance of critical damage.
This thesis proposes joint angular velocity strategies to reduce the impact velocity resulting from a lateral, backward, or forward fall. These strategies were used on two and three link reduced order models to simulate a fall from standing height of a humanoid robot. The results of these simulations were then used on a full degree of freedom robot, Viginia Tech's humanoid robot ESCHER, to validate the efficacy of these strategies.
By using angular velocity strategies for the knee and waist joint, the reduced order models resulted in a decrease in impact velocity of the center of mass by 58%, 87%, and 74% for a lateral, backward, and forward fall respectively in comparison to a rigid fall using the same initial conditions. Best case angular velocity strategies were then developed for various initial conditions for each falling direction. Finally, these parameters were implemented on the full degree of freedom robot which showed results similar to those of the reduced order models.Master of Science
42
Gómez, Hidalgo Máximo Rodrigo. "Análisis de fallas en maquinaria minera". Tesis, Universidad de Chile, 2013. http://www.repositorio.uchile.cl/handle/2250/114562.
Testo completoAbstract (sommario):
Ingeniero Civil ElectricistaLa minería del cobre en Chile ha crecido sostenidamente desde los años 90 y, actualmente, a nivel nacional, es la actividad económica más importante, y a nivel internacional, lidera la producción de este metal. En este contexto, para la industria nacional del cobre es fundamental aumentar la productividad; disminuir costos; y reducir los perjuicios a las personas, al entorno, y a las unidades productivas. En consecuencia, aumentar la continuidad operacional y disminuir los costos de falla de las correas transportadoras en los procesos de conminución contribuye a conseguir las metas establecidas. Por último, a fin de alcanzar las metas relacionadas a las correas transportadoras en estos procesos es necesario estudiar sus modos de falla, con el propósito de generar medidas compensatorias como esquemas de detección y aislación temprana apropiados. El presente trabajo tiene como propósito realizar un análisis de fallas en los equipos y componentes mecánicos más importantes de las correas transportadoras CV-005, CV-006, y CV-007 de Minera Los Pelambres (transporte de mineral grueso del chancado primario a la molienda), con la finalidad de proponer esquemas de detección y aislación temprana destinados a dichos equipos y componentes (el desarrollo de medidas compensatorias se excluye de este trabajo). Particularmente en este análisis, se presentan las principales características de las correas transportadoras. En seguida, se identifican y describen los sub-sistemas de las correas transportadoras, se identifica su instrumentación, y se describen sus modos de operación normal, tanto de forma general como particular. Luego, a partir de la información entregada por CONTAC Ingenieros Ltda., se seleccionan los equipos y componentes mecánicos más importantes de las correas transportadoras escogidas, considerando la frecuencia y duración promedio de las paradas no planificadas (evento relacionado a fallas) de los sub-sistemas identificados. Posteriormente, en base a la información facilitada por Minera Los Pelambres se identifican y describen tanto los modos de falla en los equipos y componentes determinados como sus causas, efectos, y procedimientos de detección. Finalmente, a partir de este análisis y de la investigación centrada en ingeniería, se proponen esquemas de detección y aislación temprana para los modos de falla establecidos. Los esquemas de detección y aislación temprana propuestos para los equipos y componentes determinados presentan diferentes niveles de desarrollo. En el caso de los polines, generalmente se basan en la captura de termografías; pero en las correas transportadoras escogidas, este esquema de inspección es impracticable, a causa de la distribución espacial de los polines (en otros sistemas distribuidos se han usado vehículos aéreos no tripulados para este fin). En el caso de la banda, generalmente se sustentan en la captura de imágenes superficiales y de rayos X. En el caso de los motores eléctricos, se basan en la medición de vibraciones y de la corriente en el estator. En el caso de los frenos de disco, no se encontraron esquemas específicos para la liberación fallida de las pastillas de freno; pero se podrían desarrollar a partir del procesamiento digital de imágenes y, por otra parte, la pérdida de eficiencia del resorte del sistema hidráulico cuenta con medidas compensatorias a implementar por parte de la empresa. Por último, en el caso de los reductores, se sustentan en la medición de vibraciones y en el análisis de aceites. Como trabajo futuro se sugiere principalmente estudiar la (pre)factibilidad técnica y económica de los esquemas de detección y aislación temprana propuestos.
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Sharr, Zaimon. "Fallos Erectus : Fallossymbolikens utveckling och betydelse". Thesis, Umeå universitet, Institutionen för idé- och samhällsstudier, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-187055.
Testo completoAbstract (sommario):
The Rise of The Penis is the English translation of the Swedish title. This essay is about how the phallus and phallic symbolism has evolved since prehistoric times and how the cultural definition of gender roles developed in conjunction with this development. The area under review is Europe and the Middle East. The period under review includes the first humans who began to use symbolism from at least 30 000 BC to the rise of the various civilizations of the ancient world, and up until the end of the Viking Age in northern Europe. The essay addresses the question whether it is possible to ascertain when the male genitalia became a symbol of power in order to oppress women and how the symbolic use and meaning of the phallus changed over time.
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Blount, Maurice John. "Bending and buckling of a falling viscous thread". Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/252208.
Testo completo
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Ekenberg, Tomas. "Falling freely : Anselm of Canterbury on the will /". Uppsala : Department of Philosophy, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5895.
Testo completo
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Davis, Justin Robert. "Fear of falling, proprioception and spinal reflex modulation". Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/30527.
Testo completoAbstract (sommario):
Clinical and experimental research has demonstrated that the emotional experience of fear impairs postural stability in humans. This is problematic considering that fear-related postural instability contributes to a greater likelihood of an individual suffering a fall that can result in devastating physical and financial consequences. For this reason, the research presented in this thesis was performed to clarify the current description of the postural behaviour observed among those who experience fear and/or anxiety and to investigate how human proprioceptive information is utilized by the central nervous system to explain anxiety-induced changes in postural control. Over a series of four consecutive studies, elevated surface heights were used to assess the within-subject effect of fear and anxiety on changes in static posturography, spinal reflex excitability as well as changes in mechanically (TEP) and electrically (SEP) evoked somatosensory potentials. The results of the first study demonstrated that the changes in postural control that occurred with increased surface height were dependent upon the degree of fear of falling experienced by the participants. The results of the second study demonstrated that soleus tendon reflex (STR) excitability could be facilitated during states of height-induced fear and anxiety, without any accompanying changes at the level of the somatosensory cortex. The results of the third study failed to demonstrate that descending pre-synaptic inhibition influences soleus Hoffmann reflex (SOL H-reflex) excitability during states of height-induced fear and anxiety. As such, the fourth study in this thesis was designed to test the effectiveness of using visual feedback to overcome the biomechanical confounds that limited the interpretation of changes in static posturography measures and SOL H-reflex excitability observed in the previous three studies. Taken together, the results of these four studies extend the current understanding of how posture changes during states of height-induced fear and anxiety and sheds new light on the mechanisms that facilitate the changes in spinal reflex excitability and cortical control of posture during such circumstances.
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Suren, Aydin. "Scaling of black liquor in falling film evaporator". Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/10147.
Testo completo
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Zhang, Linqiao 1970. "Rendering falling snow using an inverse Fourier transform". Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80904.
Testo completoAbstract (sommario):
This thesis presents an image based falling snow rendering method which is based on spectral synthesis technique. By incorporating the natural falling snow motion property, that is, the image speed and size of the snowflakes are related to the depth, we develop a tent-like surface in frequency domain. We synthesize the power spectrum along the tent-like surface and use IFFT to bring the data function back to space-time domain, thus attain a motion parallax image sequence. Treating the motion parallax as an opacity function, we can composite it with an existing video sequence and turn it into a snowing scene. Treating the motion parallax as a stimulus for the psychophysical study, it could serve as a complex yet natural scene-like stimulus, and therefore being expected to give a new perspective to the psychophysical study.
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Mackereth, A. R. "Thermal and hydraulic aspects of falling film evaporation". Thesis, University of Canterbury. Chemical and Process Engineering, 1995. http://hdl.handle.net/10092/7927.
Testo completoAbstract (sommario):
Some thermal and hydraulic aspects of falling film evaporation were investigated. Experiments were made on two single effect evaporators. The first with a tube, 15 m long and 48 mm in diameter and the second which had the choice of one of three tubes, all 10 m long, with diameters (23, 40 & 48 mm). The apparatus was designed to enable the measurement of overall heat transfer coefficients. The effects of process variables, on the product-side and on the steam-side heat transfer coefficients, were determined by fixing conditions on the other side of the tube.
Experiments were conducted on water, sucrose solution and skim milk. Aspects evaluated were temperature driving force, boiling temperature, tube liquid loading, feed temperature, non-condensable gas concentration in steam, de-aeration rates, product concentration (sucrose solution, milk) and feed thermal history (milk). The results obtained have been compared with theory and empirical data from the literature. A numerical integration procedure for the boiling side Nusselt number was developed to account for the change in boiling-side fluid properties over the length of the tube. The effect of boiling film Reynolds number on the overall heat transfer coefficient proved complicated with a local maximum being found in the transition flow region.
A model description was developed to mimic the steam flow and condensation behaviour in the steam-side annulus of a single tube falling film evaporator. The numerical method initially chosen to solve the model proved inapplicable.
A range of methods for measuring the amount of non-condensable gases present in vacuum steam were considered. The in-line measurement of pressure and temperature and the comparison of the pressure of a collected sample before and after freezing out the component were evaluated.
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Howes, Ashley T. "Visual simulation of falling water and plunge pools". Thesis, University of East Anglia, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302075.
Testo completo