Thesis (M.S. in Management) Naval Postgraduate School, March 1997. / Thesis advisors, Eitelberg, Mark J. ; Thomas, Gail Fann . Includes bibliographical references (p. 117-119). Also available online.

There is a dearth of literature examining how the cohesiveness of the team may be connected to individual athlete participation in youth sport settings. Although results from studies conducted with adult athletes (Carron, Widmeyer, & Brawley, 1988; Prapavessis & Carron, 1997a; Spink, 1995) suggest a positive link between perceptions of team cohesion and individual participation, this relationship has not been established with adolescent athletes. The purposes of the studies in this dissertation were: (1) to examine the relationship between cohesion and participation in a youth sport sample; (2) to examine if task cohesion moderated the relationship between perceptions of teammates’ effort levels (descriptive norms) and a participation-related outcome (effort); (3) to experimentally test the combined influence of cohesion and descriptive norms on individual self-reported effort; and (4) to explore the plausibility of teammate support as one possible mediator of the cohesion-participation relationship. A multivariate approach was used in Study 1 to both establish the initial relationship between cohesion and individual participation as well as inform subsequent studies in this dissertation by identifying which specific cohesion factors (task, social) and participation-related outcomes (effort, attendance, intention to return to the team) were most strongly related. Multivariate results revealed that task cohesion was associated with two participation outcomes – effort and intention to return to the team. Examining if perceptions of cohesion would qualify the link between perceptions about how hard teammates were working and individual athletes’ self-reported effort levels was the purpose of Study 2. Both constructs emerged as positive, significant correlates of effort. As a follow up, a between-subjects experimental design with vignettes was used in Study 3 to test the combined effects of cohesion and descriptive norms about teammate effort on individual self-reported effort levels. Building upon Study 2’s correlational findings, cohesion and descriptive norms both had an independent, positive influence on how hard players rated that they would work. The purpose of Study 4 was to consider one possible reason why team cohesion may be associated with individual participation - social support. To examine the proposition that social support may mediate the relationship between cohesion and participation, a prospective design was used in Study 4 to test the links between early-season cohesion, late-season perceptions of social support, and two participation-related outcomes (effort, intention to return to the team in the future). Results supported the plausibility of social support as a partial mediator for both outcomes. Taken together, these four studies provided initial evidence for the potential link between team cohesion and individual participation in youth sport. Additionally, the emergence of two other team-related constructs, descriptive norms and social support, suggests that these forms of teammate influence also may be associated with youth sport athletes’ participation on their team.

L'appariement des chromatides sœurs est un prérequis fondamental pour la ségrégation fidèle du génome. Cet assemblage est précisément régulé par plusieurs facteurs modulant la solidarité entre le complexe formant la cohésine et les chromosomes. Un de ces facteurs, Pds5, engage la cohésine par le biais de SCC1 et participe à la fois au renforcement de la cohésion, et inversement à la libération de la cohésine de la chromatine. Dans cette thèse, la structure cristalline du complexe entre les protéines de levure Pds5 et SCC1 est présentée. Celle-ci permet la compréhension de la fonction moléculaire de Pds5. Pds5 forme un « heat-repeat » allongé qui se lie à SCC1 via une interface dont sa séquence reste conservée. Suite à la caractérisation biologique et biochimique de cette structure, cette thèse démontre que l'intégrité de l'interface entre Pds5 et SCC1 est indispensable pour le recrutement de Pds5 à la cohésine et que son abrogation conduit à la perte de la cohésion entre les chromatides sœurs ainsi que la perte de la viabilité cellulaire. Les résultats présentés dans cette thèse suggèrent donc que Pds5 est constitutivement lie au cœur de la sous-unité de la cohésine. / Sister chromatid cohesion is a fundamental prerequisite to faithful genome segregation. Cohesion is precisely regulated by accessory factors that modulate the stability with which the cohesin complex embraces chromosomes. One of these factors, Pds5, engages cohesin through Scc1 and participates both in the enhancement of cohesion, and conversely in mediating the release of cohesin from chromatin. In this thesis the crystal structure of a complex between budding yeast Pds5 and Scc1 is presented, thus elucidating the molecular basis of Pds5 function. Pds5 forms an elongated HEAT repeat that binds to Scc1 via a conserved surface patch. Through complementary cell biological and biochemical characterisation of this structure, the thesis demonstrates that the integrity of the Pds5–Scc1 interface is indispensable for the recruitment of Pds5 to cohesin, and that its abrogation results in loss of sister chromatid cohesion and cell viability. The results presented in this thesis therefore suggest that Pds5 is a constitutively bound, core subunit of cohesin.

The present study aimed to (1) examine the direct relationship between coach transformational leadership and peer transformational leadership on team cohesion within elite Swedish floorball players, (2) examine potential differences between coach leadership behaviours and peer leadership behaviours on team cohesion, and (3) examine gender differences in perceived coach leadership behaviours, peer leadership behaviours and team cohesion.  A cross-sectional design was used and data was collected through self-assessment questionnaires of transformational leadership and team cohesion from 87 elite floorball players (59 females, 28 males). Age varied from 16 to 33 years (Mage = 22.4, SD = 3.87). Regression analyses revealed that both coach and peer transformational leadership predicted task cohesion, but coach transformational leadership had a stronger influence. There was no correlation between coach or peer transformational leadership and social cohesion. Independent t-tests indicate that female athletes tend to rate higher on peer transformational leadership and task cohesion. There were no gender differences regarding coach transformational leadership and social cohesion. The results from this study are discussed and a co-operation between coach and peer transformational leadership are purposed to increase task cohesion. Further research could refine which specific coach and peer transformational leadership behaviours that correlate to team cohesion, and further clarify the role gender might play.

The dissertation sits within the theoretical context of social cohesion theory; aspects of space that fosters social cohesion as well as the manipulation of the public market typology are investigated as research questions. The Sunnyside area in Tshwane is the physical context within which the design project is located and is observed as being in a state of social divergence. The design issue to be addressed is outlined in the following statement: The adaptive reuse of the Sunnyside Galleries building by introducing a public food market, restaurant and drinks bar to create opportunities for casual encounters and cultural exchange for the purpose of fostering social cohesion within space. / Dissertation (MInt(Prof))--University of Pretoria, 2014. / Architecture / MInt(Prof) / Unrestricted

El Micropavimento es una técnica utilizada mundialmente para el mantenimiento de carreteras debido a sus propiedades de trabajabilidad y de rotura controlada en la mezcla asfáltica que permite una rápida apertura al tráfico comparado con otros tipos de tratamientos superficiales. El ahuellamiento es un tipo de falla que afecta seriamente el desempeño de los micropavimentos y que tiene un impacto directo en la vida útil. La metodología empleada por International Slurry Surfacing Association (ISSA), en la cual se basa el manual de carreteras de especificaciones técnicas generales para construcción (EG 2013), recomienda una serie de especificaciones para el desarrollo de los ensayos de desempeño en el laboratorio que buscan evitar la presencia del ahuellamiento en el Micropavimento. Sin embargo, dentro de las limitaciones encontradas en esta metodología se evidencia que los agregados entre las mallas N° 30 y mayores a 200 que presentan valores muy cercanos al límite inferior del huso tipo III producen una falta de confinamiento entre los componentes de la mezcla asfáltica, lo cual ocasiona la falla por ahuellamiento. El objetivo de esta investigación fue evaluar la influencia de la variabilidad granulométrica del agregado en la deformación permanente de Micropavimentos. Además de brindar una propuesta de mejora a la EG 2013 respecto al desempeño del micropavimento, previniendo así el problema presentado líneas arriba para agregados con caracterización similar a la cantera Río Mantaro. / The Micropaviment is a technique used worldwide for the maintenance of roads due to its workability and controlled breakage properties in the asphalt mix that allows rapid opening to traffic compared to other types of surface treatments. The collapse is a type of failure that seriously affects the performance of the Micropavimento and has a direct impact on the useful life. The methodology used by the International Slurry Surfacing Association (ISSA), on which the road manual of general technical specifications for construction is based (EG 2013), recommends a series of specifications for the development of performance tests in the laboratory that seek to avoid the presence of the sagging in the Micropavimento. However, within limitations found in this methodology it is evident that aggregates between meshes No. 30 and greater than 200 that present values ​​very close to the type III spindle produce a lack of confinement between the components of the asphalt mixture, which causes the failure by collapse. The objective of this investigation was to evaluate the influence of the granulometric variability of the aggregate on the permanent deformation of Micro surfacing. In addition, a proposal to improve the EG 2013 respect to the performance of the Micro surfacing, this preventing the problem presented above for aggregates with similar characterization to the Rio Mantaro quarry. / Tesis

This study investigates cohesion in the spoken English discourse of thirty Arabs from three proficiency levels: superior, advanced, and intermediate. Two models were applied to the analysis. Halliday and Hasan's taxonomy was used to investigate local cohesion, or cohesion withinn turns; and Schiffrin's discourse markers approach was used to investigate global cohesion, or cohesion between turns. An ANOVA determined that the differences between the means of the three groups were significant for global cohesion and insignificant for local cohesion. The results suggest that the ability to use global cohesive ties increases with proficiency. This ability is manifested by the use of a variety of markers to achieve different communicative goals that include reorientation to information, coordination of ideas, and modification of previous responses.

Prior research in individual therapy has provided evidence that therapists are poor predictors of client outcome without the aid of objective measures and often misjudge clients' perceptions of the therapeutic relationship. The focus of the current research was to conduct a similar study in a group setting. Therapists from a university counseling center and a state psychiatric hospital were recruited to test their accuracy in predicting client outcome, quality of therapeutic relationship and their own use of empirically supported group interventions. Results indicated that therapists are poor predictors of all three, providing support for the implementation of measure-based feedback systems to inform therapists about key information that may affect the effectiveness of group psychotherapy.

Uncertain graph analysis plays a crucial role in many real-world applications, where the presence of uncertain information poses challenges for traditional graph mining algorithms. In this paper, we propose a novel method to find antagonistic communities in signed uncertain graphs, where vertices in the same community have a large expectation of positive edge weights and the vertices in different communities have a large expectation of negative edge weights. By restricting all the computations on small local parts of the signed uncertain graph, our method can efficiently find significant groups of antagonistic communities. We also provide theoretical foundations for the method. Extensive experiments on five real-world datasets and a synthetic dataset demonstrate the outstanding effectiveness and efficiency of the proposed method. / Thesis / Master of Science (MSc)

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