Upravljački algoritam za podupravljane mehaničke sustave s uključenom dinamikom pogona

U ovom radu izvodi se opći upravljački algoritam za istodobno stabiliziranje i praćenje trajektorija podupravljanih nelinearnih mehaničkih sustava (UNMS) s električnim, pneumatskim i hidrauličkim pogonima (aktuatorima). Istodobna stabilizacija i praćenje trajektorija odnosi se na stupnjeve slobode gibanja sustava, a obuhvaćaju se neholonomni sustavi drugog reda i sustavi sa spregom ulaznih veličina. Algoritam rješava probleme koji nastaju zbog podupravljanosti, zanemarivanja dinamike pogona i zanemarivanja statičkog trenja. S njim su poboljšane značajke zatvorenog upravljačkog kruga u odnosu na sustave sa zanemarenom dinamikom pogona i/ili zanemarenim statičkim trenjem kakvi se često koriste. Rješavanje ovakvih problema zahtijeva upravljačke algoritme temeljene na regulatorima s promjenjivom strukturom. Matematička jednostavnost novo uvedenog algoritma omogućuje laku ugradnju u računalne programe, pa je algoritam pogodan za realizaciju u praksi. Značaj ovog istraživanja leži u upravljačkom zakonu koji svojom uporabom omogućuje upravljanje proizvoljno odabranim stupnjevima slobode gibanja sustava s ciljem zadovoljenja kvalitativnih značajki regulacije. To rezultira stabilnim i robusnim ponašanjem podupravljanih sustava

Dark Matter: Susan Howe, Muriel Rukeyser, and the Scholar\u27s Art

Instead of describing poetry as a set of constraints or history of practices, Muriel Rukeyser calls it one kind of knowledge. Dark Matter heeds Rukeyser\u27s call, theorizing a poetics of the scholar\u27s art, in which documentary investigation, autobiographical exploration, and formal innovation are mutual, interwoven concerns. The dissertation pairs American poets Susan Howe (b. 1937) and Muriel Rukeyser (1913-1980), reading their hybrid works not through the received categories of American poetry, or through common generic and disciplinary divisions, but using an inductive methodology that takes its lead from the poets. Understanding Howe and Rukeyser\u27s literary experiments as serious interventions in broad fields of thought, I seek out and delve into their many sources - literary, historical, mythological, philosophical, scientific, and intimate. Rukeyser is commonly read as feminist poet of witness, and Howe an aesthetic innovator. The assumptions that underlie these categorizations get at the heart of what poetry is, why it matters, and how it relates to the project of living. Implicit are ideas about the relationship between poetry and politics, what constitutes artistic experimentation, and how poems should and do address lives, particularly the intimate lives of women. Within these frameworks, the qualities that have made Rukeyser\u27s genre-challenging books so difficult to interpret and place are the same that have secured for Howe\u27s a preeminent position in contemporary poetry. But just as Rukeyser\u27s experiments in form are illegible to readers with particular expectations of realism, Howe scholarship suffers from a related, if inverted, short-sightedness: many revel in her linguistic ingenuity without probing its profound philosophical underpinnings or explicitly personal stakes. An act of scholarly reclamation, Dark Matter interrogates texts of Rukeyser\u27s that have received scant or no critical attention: her 1942 biography of physical chemist Willard Gibbs, her musical about Harry Houdini (1973), and The Orgy (1965), her book about the pagan festival, Puck Fair. I read these alongside kindred texts by Howe: Pierce-Arrow (1999), which is indebted to Pragmatist philosopher Charles Sanders Peirce; The Liberties (1980), which joins Jonathan Swift\u27s mistress Stella and Shakespeare\u27s Cordelia; and THAT THIS (2010), which investigates archival scholarship through the lens of personal grief

YOUNG WOMEN’S ENGAGEMENT WITH FEMINISM IN A POSTFEMINIST AND NEOLIBERAL CULTURAL CONTEXT

This thesis aims to explore young women’s relationship with feminism against the backdrop of a long-running media claim that ‘feminism is dead’ from a feministinfluenced poststructuralist perspective. Aapola, Gonick, and Harris (2004) note how young women tend to be constructed in three specific ways: 1) as repudiating a feminist subjectivity, 2) as apolitical and apathetic, and 3) as interpreting the world through an individualistic lens. I agree with theirs and Griffin’s (2001) sentiment that many assumptions have been made about young women’s relationships with feminism. I sought to build on previous research by conducting three studies. Study 1 and Study 2 were both media-text studies which investigated contemporary discourses relating to gender and feminism which are made available in (S1) women’s monthly magazines and (S2) online feminist blogs. Study 3 used minifocus groups with young women aged 18-30 years, in order to examine how discourses around feminism are co-constructed, as well as to identify which discourses from media (specifically women’s magazines and feminist blogs) women reproduced and/or challenged in their talk. A feminist-informed poststructuralist discourse analysis was used to analyse each dataset. This research identifies not only a strong underlying core of individualism running throughout participants’ talk (and operating across both media datasets), but also participants frequently repudiated terms such as ‘feminism’ and ‘women’s rights’ and instead positioned themselves as ‘equal rights advocate’. While participants deployed a discourse of gender neutrality to advocate a degendering of women’s rights issues to being ‘human rights’, participants were deploying this discourse to suggest that men ‘have it bad too’. Many participants seemed to prefer to look at equality issues through a genderneutral lens, and some participants felt unable to adopt a feminist subjectivity due to its perceived ‘exclusion’ of men. A feminist subjectivity was constructed by participants as passive and dependent. Instead, participants appeared to adopt the (apparently) active subject position of the ‘can-do girl’, who has individual agency and does not need to rely on support from the state, nor have any need for involvement in collective action such as feminist politics

Using MapReduce Streaming for Distributed Life Simulation on the Cloud

Distributed software simulations are indispensable in the study of large-scale life models but often require the use of technically complex lower-level distributed computing frameworks, such as MPI. We propose to overcome the complexity challenge by applying the emerging MapReduce (MR) model to distributed life simulations and by running such simulations on the cloud. Technically, we design optimized MR streaming algorithms for discrete and continuous versions of Conway’s life according to a general MR streaming pattern. We chose life because it is simple enough as a testbed for MR’s applicability to a-life simulations and general enough to make our results applicable to various lattice-based a-life models. We implement and empirically evaluate our algorithms’ performance on Amazon’s Elastic MR cloud. Our experiments demonstrate that a single MR optimization technique called strip partitioning can reduce the execution time of continuous life simulations by 64%. To the best of our knowledge, we are the first to propose and evaluate MR streaming algorithms for lattice-based simulations. Our algorithms can serve as prototypes in the development of novel MR simulation algorithms for large-scale lattice-based a-life models.https://digitalcommons.chapman.edu/scs_books/1014/thumbnail.jp

Epidemiology of Injury in English Women's Super league Football: A Cohort Study

INTRODUCTION: The epidemiology of injury in male professional football has been well documented (Ekstrand, Hägglund, & Waldén, 2011) and used as a basis to understand injury trends for a number of years. The prevalence and incidence of injuries occurring in womens super league football is unknown. The aim of this study is to estimate the prevalence and incidence of injury in an English Super League Women’s Football squad. METHODS: Following ethical approval from Leeds Beckett University, players (n = 25) signed to a Women’s Super League Football club provided written informed consent to complete a self-administered injury survey. Measures of exposure, injury and performance over a 12-month period was gathered. Participants were classified as injured if they reported a football injury that required medical attention or withdrawal from participation for one day or more. Injuries were categorised as either traumatic or overuse and whether the injury was a new injury and/or re-injury of the same anatomical site RESULTS: 43 injuries, including re-injury were reported by the 25 participants providing a clinical incidence of 1.72 injuries per player. Total incidence of injury was 10.8/1000 h (95% CI: 7.5 to 14.03). Participants were at higher risk of injury during a match compared with training (32.4 (95% CI: 15.6 to 48.4) vs 8.0 (95% CI: 5.0 to 10.85)/1000 hours, p 28 days) of which there were three non-contact anterior cruciate ligament (ACL) injuries. The epidemiological incidence proportion was 0.80 (95% CI: 0.64 to 0.95) and the average probability that any player on this team will sustain at least one injury was 80.0% (95% CI: 64.3% to 95.6%) CONCLUSION: This is the first report capturing exposure and injury incidence by anatomical site from a cohort of English players and is comparable to that found in Europe (6.3/1000 h (95% CI 5.4 to 7.36) Larruskain et al 2017). The number of ACL injuries highlights a potential injury burden for a squad of this size. Multi-site prospective investigations into the incidence and prevalence of injury in women’s football are require