The thesis deals with the relationship between one's time perspective and their ability to cope with the termination of the relationship. The time perspective is composed of five temporal orientations - past positive, past negative, present hedonistic, present fatalistic and future - which differ from each other in personality characteristics and their influence on human behavior. Our aim was to explore the differences among them in the choice of coping strategies in dealing with a breakup and verify the hypothesis. The following methods were used in the research: Zimbardo Time Perspective Inventory (ZTPI), questions concerning respondent's breakup and Brief COPE, which measured a total of 14 coping strategies on a sample of 237 respondents. The results confirmed the different choices of coping strategies among five time orientations. Although it was not proved that some temporal orientations (past negative) would cope with the breakup more problematically, it seems, however, that these ones mostly use maladaptive coping strategies which can make their breakup adjustment harder. In the conclusion, therefore, are also considered the possibilities of application of our results in psychological counseling practice. Powered by TCPDF (www.tcpdf.org)

En puisant dans différentes traditions de l’histoire intellectuelle et en faisant appel au savoir cumulé par la sociologie des intellectuels, la thèse propose un examen critique de l’univers des sciences sociales en Serbie et en Croatie, de leur production et de leurs reconfigurations, durant la dissolution yougoslave, en se concentrant sur la période qui va de la disparition de la Ligue des Communistes de Yougoslavie en 1990, à la fin de la guerre en Bosnie en 1995. La recherche reconstruit et analyse dans un premier temps quelques-uns des principaux débats et réflexions développés dans le monde scientifique et intellectuel yougoslave et (post)yougoslave depuis la période socialiste, sur la base de publications périodiques, de livres et de travaux inédits. L’étude se concentre notamment sur la période de la dissolution du pays et elle examine en détail les réflexions des sciences sociales autour des grandes problématiques des années 1990, telles que la guerre, la montée du nationalisme, la transition politique et économique et enfin, les nouvelles manières de penser la modernisation à l’époque de la globalisation. Dans un second temps, à partir d’entretiens en profondeur menés avec des chercheurs et à partir de documents institutionnels, matériaux statistiques et documents de presse, la recherche décrit et analyse le monde des sciences sociales dans la République Fédérale Socialiste de Yougoslavie, ainsi que ses reconfigurations pendant la crise et la dissolution du pays. La thèse s’intéresse surtout aux transformations des conditions de production des chercheurs dans la première moitié des années 1990, une période caractérisée par l’effondrement du système socialiste, le début de la guerre dans la région, la rupture des liens de coopération panyougoslaves, la crise économique, la montée de l’autoritarisme et le recul général de l’espace (post)yougoslave dans le système mondial. / Drawing from different traditions of intellectual history, as well as from the sociology of intellectuals, the dissertation proposes a critical examination of the univers of social sciences in Serbia and Croatia, their production and reconfiguration, during the breakup of Yugoslavia. The work focuses on the period that goes from the dissolution of the League of Communists of Yugoslavia in 1990 to the end of the war in Bosnia in 1995. On the one hand, the research reconstructs and analyses some of the main debates and reflections that took place in the Yugoslav and (post)Yugoslav scientific and intellectual world from the socialist period onwards, drawing from scientific journals, books and unpublished works. The study focuses especially on the period of the country's disintegration, examining in detail the reflections in social sciences around some of the main issues of the 1990s such as war, nationalism, political and economic transition and new approaches to modernization characteristic of the era of globalisation. On the oher hand, ressorting to in-depth interviews conducted with researchers, as well as institutional documents, statistical materials and sources from the press, the research describes and analyzes the world of social sciences in the Socialist Federal Republic of Yugoslavia and its reconfigurations during the crisis and dissolution of the country. The thesis particularly addresses the transformations that took place in the conditions of production for local researchers during the early 1990s, a period that was characterized by the collapse of the socialist system, the beginning of war in the region, the breakup of panyugoslav scientific and intellectual links, economic crisis, the rise of authoritarianism and the general regression of the (post)Yugoslav space in the global system.

There exist several different numerical models for predicting bubble coalescence and breakup using computational fluid dynamics (CFD). Various combinations of these models will be employed to model a bioreactor process in a stirred reactor tank. A mass transfer coefficient, Kla, has been calculated and compared to those found experimentally by Thermo-Fisher Scientific, to validate the accuracy of currently available mathematical models for population balance equations. These include various combinations of bubble breakup and coalescence models coupled with the calculation of mass transfer coefficients.

The object of this work is to explore the influence superhydrophobic (SH) surfaces exert in laminar jet impingement and when they are combined with riblets in turbulent channel flow. A SH surface generates an apparent slip due to the combination of micropatterning and chemical hydrophobicity. Because of surface tension, water does not enter the cavities between the features, increasing the contact angle of a water droplet on the surface and reducing the liquid-solid contact area. An analysis based on the integral momentum approach of Karman and Pohlhausen is presented that predicts jet impingement behavior on SH surfaces. The model is first applied to the scenario where the slip at the surface is isotropic and a downstream depth is imposed such that a circular hydraulic jump occurs. The model predicts the thin film parameters downstream of the jet and the radial location of the hydraulic jump. An increase in the hydraulic jump radius occurs as slip increases, momentum of the jet increases, or the downstream depth decreases. Modifications to the model are made for the scenario where the slip at the surface varies azimuthally, as would be the case for a surface patterned with microribs. The average behavior is similar, although now an elliptically shaped jump forms with the major axis aligned parallel to the rib/cavity structures. The ellipse eccentricity increases as the slip increases, the jet momentum increases, or the downstream depth decreases. Where there is no downstream depth imposed on SH surfaces, the thin film breaks up into droplets instead of forming a hydraulic jump. Further changes are made to the model to incorporate this behavior for isotropic and anisotropic surfaces resulting in circular and elliptically shaped breakups respectively. This work also explores SH surfaces with riblets in turbulent channel flow. Pressure drop measurements across surfaces exhibiting superhydrophobicity, riblets, and surfaces with both drag reducing mechanisms are presented. The SH surface reduces drag because the effective surface area is reduced and riblets are able to reduce drag by dampening the spanwise turbulence. Photolithography was used to fabricate all surface types. An aluminum channel with a control and a test section was used for testing. Pressure transducers recorded the pressure drop across smooth silicon wafers and patterned test surfaces simultaneously allowing for computation of the friction factors.

This paper aims to study how varying crossflow burning temperatures from 1100 C to 1800 C affect the liquid droplet breakup, size distribution, and atomization of a liquid water jet injected into a vitiated crossflow. The LJIC injection mechanism was implemented using the high-pressure axially staged combustion facility at the University of Central Florida. The measurement devices used to gather particle data from the exhaust plume were the TSI Aerodynamic Particle Sizer (APS), which measures particles between 0.523 µm and 20 µm, and the Sensirion SPS30 (SPS30), which measures particles between 0.3 µm and 10 µm. Both measurement devices were placed 3 ft away from the choked exit. Table 3 shows that the 1800 C crossflow temperature behaved as predicted by having the largest particle distribution of 67.97% and the largest particle count of 19,301 at 0.523 µm. The 1100 C crossflow produced the second-largest normalized particle count of 66.69% and raw particle count of 20,209 at 0.523 µm. This result is contrary to the original hypothesis because it shows that the relationship between temperature and particle count is non-linear and that many other factors must be at play in the atomization process, such as the droplet distribution at the nano level. The SPS30 was used to compare the particle size distributions between a 1500 C and 1800 C crossflow. Acquiring number concentration data for particles up to 10 µm in size, the 1800 C crossflow had a distribution peak at 802.76416 N/cm3, and the 1500 C crossflow had a peak of 867.28272 N/cm3. For the 0.5 µm peak, The 1800 C had a 10 µm particle size distribution peak at 674.27.76416 N/cm3, and the 1500C crossflow had a peak of 730.501 N/cm3. The decreased number concentration from 1500 C to 1800 C case grants the water particles in the 1800 C crossflow increased surface area, which allows for increased heat exposure from the vitiated crossflow [7]. Despite some nonlinear particle count results, the highest crossflow temperature of 1800 C produces the best atomization results by reducing the total particle count and having the largest collection of particles at the lowest detectable particle size of 0.523 µm.

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Many people experience a romantic breakup at some point in their lives, but people's reactions can vary considerably. A common way of coping with the dissolution of a romantic relationship is to seek support and opportunities to talk with close others. Although talking with social network members may prove helpful for some, the Social-Cognitive Processing (SCP) model posits that interpersonal interactions can hinder emotional recovery and adjustment if the disclosers feel the social network members are responding in a socially constraining way. As a result of perceiving social constraints, individuals may try to avoid thinking and talking about the breakup altogether, which, in turn, may interfere with the cognitive processing necessary to move forward from the breakup. The current research marked the first time the SCP model was explored with regards to the dissolution of romantic relationships, and it evaluated the utility of the SCP model in potentially explaining the variable nature of adjustment to a romantic breakup. One hundred and seventy-four eligible participants completed this online study. Participants completed various questionnaires pertaining to their previous relationship and subsequent breakup, their feelings and experiences following the romantic dissolution, their tendencies to think about the breakup, and the degree to which they discussed the relationship dissolution with others and the reactions they received during these conversations. In support of the SCP model, the results indicated that social constraints were associated with greater psychological distress. Furthermore, avoidance partially mediated the relation between social constraints and psychological distress as levels of social support decreased. This suggests that higher levels of social support might help buffer against engaging in avoidance in response to social constraints. In an initial attempt to examine whether the extent of avoidance displayed varied as a function of a dispositional variable (i.e., self-monitoring), no support was found. Future research should continue to investigate additional factors that may moderate the relation between social constraints and psychological distress through avoidance. / Psychology