As sports become more professionalised and international in scope athletes increasingly migrate from one country to another. These individuals are required to adjust and adapt quickly when moving internationally. Literature on sports migration, however, tends to focus on routes and pathways rather than the effects of movement on the athletes themselves. The aim of this study, therefore, was to explore how the frequent workplace circulation inherent in the lives of highly skilled migrants affects their social selves. Using professional golf as a case study, this project includes an analysis of family issues, relationships between players, pay and conditions, and technical approaches to playing golf. Interviews were conducted with 20 male professional golfers and analysed from a figurational standpoint. As golf tournaments are increasingly staged in a myriad of different countries players are required to spend longer periods of time away from home and experience intense feelings of loneliness and isolation. It is argued that golfers are not isolated in terms of people who they have around them while on tour, but rather in terms of lack of contact with people who they have positive meaningful feelings towards, such as their family and friends. To help reduce this loneliness, golfers develop behaviours that foster temporary we-group alliances with other players they perceive to be similar to themselves. People in such groups are friends, characterised by bonds of togetherness, while also enemies showing evidence of conflicts as they are in direct competition for a share of the overall prize money. Indeed the monetary rewards available for top golfers continues to increase, however, such recompense is only available to small numbers and the majority fare poorly. It is argued that the prize money breakdown fosters internalised behaviour constraints whereby many players 'gamble' on pursuing golf as their main source of income despite the odds against them. This habitus is strengthened given the significant financial investments many players have made to fulfil their childhood dreams, which further blurs their ability to see the reality of their lives. The result is many golfers are constrained to develop networks with sponsors for financial reasons which leaves some with conflicting choices between regular income, and adhering to restrictive contractual agreements, or the freedom to choose between different brands. As such, overall the results of this study highlight the importance of considering the cultural and social adaptations required in the life of a transient migrant.

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Student mobility is an issue for high poverty schools in the shadow of increased rigor and accountability for student performance. Whereas mobility is not a sole cause for poor achievement, it is a contributing factor for students in poverty who are already considered to be at risk of low achievement. Student mobility creates a hardship for schools and districts and hampers attempts to properly monitor the progress of students. This quantitative study examined the differences between mobile and nonmobile 4th grade students from 4 high poverty schools in a Northeast Tennessee school district. Research before and after the No Child Left Behind Act of 2002 (NCLB) was explored. A two-way contingency analysis was used to determine if differences exist between mobile and nonmobile students on reading and math achievements tests. Additionally, the frequency of mobility and mobile and nonmobile among 3 ethnic groups were explored to determine the effects of mobility on achievement. The analyses suggested that no significant relationship exists between the independent variables. This quantitative study examined the differences between mobile and nonmobile fourth grade students from four high poverty schools in a Northeast Tennessee school district. Research before and after the No Child Left Behind Act of 2002 (NCLB) was explored. A two way contingency analysis was used to determine if differences exist between mobile and nonmobile students on reading and math achievements tests. Additionally, the frequency of mobility and mobile and nonmobile among three ethnic groups were explored to determine the effects of mobility on achievement. The analyses suggested that no significant relationship exists between the independent variables.

No description available.

No description available.

The transition from Apartheid urban space to – something else – draws our attention from the fixing moments of historically divided cities to the experience of mobility, interaction and the dynamism of space. (Robinson 1999: 163) This dissertation will approach the modern, post-colonial and post-apartheid African city as experimental ground for exploring, understanding and expressing spatial dynamics through the visual language of cinema. The proposal intends to mediate between the complex historical context which is manifested in the built fabric of the city and the new dynamic and often unstable urban conditions of Johannesburg, by specifically focusing on the contrasting conditions of the Johannesburg Art Gallery and the Noord Street Taxi Rank. The role of cinema as a philosophical device in this dissertation is to produce a point of inception, an assemblage, or a terrain of encounter through which the project will be further investigated and articulated. The principal aim of the dissertation is to effectively react to contrasting aspects of both heritage and transience, whilst simulating the Cinematic Gaze, by creating a public platform that serves as an aperture for viewing as well as an urban stage with the potential to be viewed. The hypothesis states that, if successfully applied, cinematic space can accentuate the unique and vibrant conditions of the inner city. This will ultimately lead the city dweller to a better sense of association with his/her immediate surroundings and a better comprehension of his/her role in place-and-time in the urban environment / Dissertation (MArch(Prof))--University of Pretoria, 2014. / Architecture / MArch(Prof) / Unrestricted

On choisit un groupe algébrique G, un sous-groupe algébrique H de G ; on choisit une mesure de probabilité borélienne μ sur G. On considère alors la chaîne de Markov sur l’espace homogène X = G/H de probabilité de transition Px = μ * δx pour x ε X. Dans cette thèse, on étudie les propriétés de récurrence de ces marches aléatoires.On s’intéresse à deux types de récurrence : la récurrence presque-sûre (toute trajectoire revient presque-sûrement infiniment souvent dans un compact) et la récurrence en loi (il existe une mesure de probabilité μ stationnaire sur X .On s’intéresse également aux éventuelles propriétés de transience presque-sûre (toute trajectoire quitte presque-sûrement définitivement tout compact).On construira d’abord un exemple où on n’a ni récurrence presque-sûre en tout point, ni transience presque-sûre en tout point. On montrera ensuite un critère de récurrence presque-sûre dans le cas où G est un groupe de Lie semi-simple ; on a en fait dans ce cas une dichotomie : soit tous les points sont récurrents,soit tous les points sont transients.Dans le cas où G est le groupe affine GL(d,ℝ) α ℝd,on donnera un critère de récurrence en loi sur les Grassmanniennes affines, et, dans un dernier chapitre, on donnera quelques résultats partiels d'un projet en cours,permettant de donner des résultats pour le groupe SO(p, p+1) α ℝ2p+1. / Choose an algebraic group G, and an algebraic subgroup H. Choose a Borel probability measure μ on G. Consider the Markov chain on the G-space X = G/H with transition probability Px = μ * δx for x ε X.The point of this dissertation is the study of the recurrence properties of such a random walk.We consider two types of recurrence : almost-certain recurrence (i.e. almost-every trajectory enters some compact set infinitely often) and the associated almost-certain transience (where almost-every trajectory eventually leaves every compact set) and recurrence in law (i.e. there exists a μ stationary probability measure on X).First, we show that, in general, there is no dichotomy between almost-certain recurrence and transience by constructing an example with both almost-certainly recurrent and almost-certainly transient points.We then prove a criterion for almost-certain recurrence when G is a semi-simple Lie group and X is a G-space. In fact, in this case, we have a dichotomy where either every point of X is almost-certainly recurrent, or every point of X is almost certainly transient.When G is the affine group GL(d,ℝ) α ℝd, we give a criterion for recurrence in law on the affine Grassmannians.In the final chapter, we give some partial results from an ongoing project,which give a criterion for recurrence in law the group SO(p,p+1)α ℝ2p+1.

The theme of this work is memory and memory's retained memories associated with emotions. Memories which can be stored and recalled are often times associated with certain objects. On this issue, opinions by psychologist and sociologist Bohuslav Beetle and aesthetics and philosopher Dušan Sindelar are selected. The concept created on the basis of the theoretical part of the thesis brought in solutions in several different fingerprint files, which symbolize transience and fragility of memories in our lives.

Cette thèse est dédiée à l'étude des marches aléatoires en milieu aléatoire sur Zd. On s'intéresse tout particulièrement aux environnements qui sont elliptiques, mais pas uniformément elliptiques, et qui peuvent donc contenir des pièges sur lesquels la marche passe beaucoup de temps. Le premier résultat de cette thèse (chapitre 4) concerne les environnements de Dirichlet, qui forment une sous-classe de marches aléatoires en milieu aléatoire présentant des propriétés remarquables. On se place en dimension d≥ 3 et on étudie le cas où les pièges dus à la non-uniforme ellipticité sont prépondérants. Dans ce contexte, on montre l'équivalence des points de vue statique et dynamique pour une marche accélérée. Ceci permet de compléter les résultats de transience et récurrence directionnelles obtenus par Sabot, et de donner le degré polynomial de l'éloignement de la marche par rapport à l'origine dans le cas sous-balistique et transient. On se place ensuite (chapitre 5) dans le cas des marches transientes dans une direction, et on étudie les conditions sur la loi de l'environnement nécessaires pour assurer l'existence de moments pour les temps de renouvellement. On améliore ainsi les résultats obtenus par Campos et Ramírez. Dans la dernière partie (chapitre 6), on étudie les conditions d'application du théorème central limite quenched dans le cas des marches aléatoires balistiques. Sous la condition supplémentaire (T), on affaiblit les hypothèses sur l'intégrabilité des temps de renouvellement des travaux de Rassoul-Agha et Seppäläinen et de Berger et Zeitouni : on arrive à la condition E (τ12+ε) < +∞ (pour le théorème annealed la condition optimale est E (τ12) < +∞) / In this thesis we study random walks in random environment on Zd. We are particularly interested in environments that are elliptic, but not uniformly elliptic. Those environments can contain traps on which the walk spends a lot of time. The first results in this thesis (chapter 4) deal with the particular case of Dirichlet environments. Random walks in Dirichlet environment form a sub-class of random walks in random environment with specific properties. We consider dimensions d 3 and we study the behavior of the walk when the traps created by the non-uniform ellipticity play an important part. In this context, we show the equivalence between the static and dynamic points of view for an accelerated walk. This completes the results of directional transience and recurrence obtained by Sabot, and it allows to find the polynomial order of the magnitude of the walk’s displacement in the sub-ballistic transient case. Then (chapter 5) we consider the case of directionally transient walks, and we study the conditions on the law of the environment that ensure the existence of moments for the regeneration times. We thus improve the results obtained by Campos and Ramírez. In the last section (chapter 6), we consider the case of ballistic random walks and we study the conditions under which a quenched central limit theorem holds. Under the additional assumption (T), we weaken the integrability of the regeneration times necessary for the works of Rassoul- Agha and Seppäläinen, and Berger and Zeitouni. We obtain the condition E (τ12+ε) < +∞ (whereas for the annealed theorem, the optimal condition is E (τ12) < +∞)

On étudie une équation différentielle stochastique animée par un processus ponctuel de Poisson, qui modélise un changement continu de lénvironnement d'une population et la fixation stochastique de mutations bénéfiques pour compenser ce changement. La probabilité de fixation d'une mutation augmente dès que le retard phénotypique $X_t$ entre la population et l'optimum augmente. On suppose que les mutations favorables se fixent instantanément induisant un saut adaptatif. En premier lieu, on a étudié le comportement à long terme de la solution de cette équation sachant qu'on ne considère qu'un seul trait phénotypique de la population et on a trouvé les conditions sous lesquelles $X_t$ est récurrent (possibilité de survie) ou transient (extinction inévitable). Ensuite, on a généralisé nos résultats en considérant un vecteur de traits phénotypiques de la population, essentiellement dans $mathbb R^2$. A la fin, on introduit une limite des petits sauts pour caractériser et comprendre le cas récurrent. / We study a stochastic differential equation driven by a Poisson point process, which models continuous changes in a population's environment, as well as the stochastic fixation of beneficial mutations that might compensate for this change. The fixation probability of a given mutation increases as the phenotypic lag $X_t$ between the population and the optimum grows larger, and successful mutations are assumed to fix instantaneously (leading to an adaptive jump). First, we study the large time behavior of the solution of this SDE taking into consideration one phenotypic trait of the population and we find the conditions under which $X_t$ is recurrent (possibility of survival) or transient (doomed to exctinction).Then we generalize our results to the case of a phenotypic traits vector, essentially in $R^2$. Finally, we introduce a small jumps limit to characterize and understand the recurrent case.