Thesis: M.S., Massachusetts Institute of Technology, Department of Ocean Engineering, 1978 / Bibliography: leaf 103. / by George L. Clemmer, II. / M.S. / M.S. Massachusetts Institute of Technology, Department of Ocean Engineering

– Här kommer vi att börja och här kan vi också komma att sluta. – Vi befinner oss i ett slags vakuum eftersom att start- och slutpunkten för den här texten finns någonstans i ett flertal parallella verklighetsskildringar - berättelser som å ena sidan kan tala för sig själv, men samtidigt är beroende av varandra för att förklara och förtydliga strategier, tematik och intentioner i en konstnärlig praktik. – Den här texten är enbart en text och existerar inte på något annat sätt än just som text. – Den här texten är en förklaring, ett komplement, en svepande rörelse men också ett tidsdokument - ett statement of the times. – Vi som talar är på sätt och vis samma person, men är också medvetna om att vi besitter olika förmågor och har olika kvalitéer som skiljer oss åt. – Vi är yttre skal och inre demoner. – Vi är någon slags karaktärer - verklighetsflyktens frukt. – Vi som talar är ständigt närvarande i texten och vi kommer att sammanfoga våra röster och kanaliseras genom en kropp, just eftersom att det är så vår verklighet ser ut.

Within the scope of this thesis, I provide close textual and visual readings of director/actor/producer Tyler Perry's most well-known character, Mable "Madea" Simmons -- a performance he does in full female drag attire -- focusing on his mainstream hit film, Madea Goes to Jail (2009). My reading of the character of Madea veers against the common narrative her existence being just another recycled trope of men disguised as women only to perform in stereotypical and demonizing behavior. I argue Madea represents what I refer to as a "trans*female character", within the space of Perry's popular film that feature her. Read through the lens of being trans*female character, I propose this shift in analysis and critique of cinematic displays of drag helps to transgress beyond male/female binaries of acceptable and possible visual gender representations. More in-depth, using the theoretical concept of Gwendolyn Pough's "bringing wreck", I make the argument that while ostensibly representing the "angry black woman" stereotype, Madea's characterization and actions within the film represent strategies and efforts to not be contained within hegemonic ideals of black female respectability politics and the law efforts to put her behind bars. By "bringing wreck", Madea's fictional acts of violence and talking back are read as a strategy that reflects a historical trend of misrecognition that renders black women's concerns and discontent with marginalization as irrational anger. / text

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We use simultaneous observation of translational and rotational Brownian motion of domains in lipid membranes to test the hydrodynamics-based theory for the viscous drag on the membrane inclusion. We find that translational and rotational diffusion coefficients of micrometer-sized solid (gel-phase) domains in giant unilamellar vesicles showing fluid–gel phase coexistence are in excellent agreement with the theoretical predictions. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.

Under åtskilliga år har organisatorisk förändring i form av sammanslagningar av organisationer varit en fortlöpande del av den operativa strategin för flertalet organisationer. Detta för att uppnå organisationell mångfald, tillväxt och rationalisering. Vad man emellertid har förbisett att ta hänsyn till är att vardera organisationen besitter en specifik organisationskultur som präglas av gemensamma och delade meningar om organisationens värderingar, normer, grundläggande antaganden och verklighetsuppfattningar. För att få till stånd en ny och framgångsrik enhet krävs en omskapad organisationskultur, där de anställda från de skilda organisationerna erfar en ny gemensam och delad mening om organisationens satta grundstenar. Vad denna studie vill bidra med är en ny vinkel beträffande en förändrad organisationskultur där man ser till de anställdas upplevelse utifrån de individuella karaktäristiska dragen; neuroticism, extrovert, öppenhet, vänlighet och målmedvetenhet, vilket kan komma ha betydande relevans för att uppnå en lyckad sammanslagning. Detta med anledning av att en individs beteende torde härstamma från personligheten, där personligheten belyser en individs karaktäristiska och organiserande sätt att känna, tänka och handla i olika situationer. Det är framförallt i situationer där vanor och rutiner förändras som de individuella karaktäristiska dragen blir intressanta att studera för att kartlägga hur en individ svarar på detta. En deduktiv ansats kommer därav att tillämpas med avsikten att studera en förändrad organisationskultur med en ny vinkel, vilket i detta fall är utifrån individuella karaktäristika drag. Med stöd från tidigare forskning byggs teser, vilket sedan prövas mot empirisk data som samlats in med hjälp av en organisation som genomgått en sammanslagning. Utifrån uppsatsens syfte har en kombination av metoder tillämpats i avsikt att analysera informationen från enkätundersökningen. Uppsatsens diskussion och slutsats grundas på de enkätsvar som samlats in från den specifika organisationens anställda, bortsett från ledningsgruppen. Utifrån resultaten kan det antydas att studien mätt det som var åsyftat att mäta. Däremot kunde denna studie inte påvisa att samband finns mellan dessa variabler, vilket förklaras i sista avsnittet bero på ett flertal aspekter. / For several years, organizational change in the form of mergers has been an ongoing part of the operational strategy for most organizations. This is to achieve organizational diversity, growth and rationalization. What, however, has failed to take into account is that each organization possesses a specific organizational culture of common and shared views on the organization's values, norms, basic assumptions and perceptions of reality. In order to establish a new and successful unit requires a recreated organizational culture, where employees from different organizations are experiencing a new common and shared sense of organization set foundations. What this study would like to contribute is a new angle regarding a change in organizational culture that looks to the employee experience based on the individual characteristic features; neuroticism, extroversion, openness, agreeableness and conscientiousness, which may have significant relevance for achieving a successful merger. This is on account of that an individual's behavior derives from personality features, which highlights the personality of individuals and how they feel, think and act in different situations. It is mainly in situations where the habits and routines changes as the individual characteristic features will be interesting to study to identify how an individual responds to this. A deductive approach will hence be applied with the intention of studying a change in organizational culture with a new angle, which in this case is based on individuals’ characteristics traits. With support from previous research theses have been built, which were tested against empirical data gathered with the help of an organization that has undergone a merger. Based on the purpose of the essay is a combination of methods applied in order to analyze the information from the survey. Thesis discussion and conclusion is based on the survey responses collected from the specific organization's staff, apart from the management team. From the results it can be inferred that the study measured the different variables correctly. In contrast, this study could not conclude that there were any significant relationship between these variables, which is explained in the last section of the thesis.

Beobachtete und über parametns1erte Beziehungen berechnete Windreibungs-koeffizienten werden für die Zeit eines Sturms, der in der Zeit zwischen dem 08.07.96 und 11.07.96 an der Ostseeküste tobte, verglichen. Die innerhalb der ufernahen Zone aus Windprofildaten ermittelten Reibungskoeffizienten lassen sich mit weniger als 20% Fehler auch über vorliegende parametrisierten Beziehungen aus einer standardisierten Windgeschwindigkeitsmessung berechnen. / A comparison between observed and calculated wind drag coefficients were investigated during a storm with wind speeds up to 20 m/s at the Baltic Sea coast between 3th July, 1996 and 1 lth July, 1996. The drag coefficient which was determined from observed wind speeds from wind profile measurements can also be predicted on behalf of parameterised relations with a random error less then 20%.

Surfaces with static contact angle greater than 150 degrees are typically classified as superhydrophobic. Such coatings have been inspired by the lotus leaf. As water flows over a superhydrophobic surface, "slip effect" is produced resulting in a reduction in the skin-friction drag exerted on the surface. Slip flow is caused by the entrapment of a layer of air between water and the surface. Superhydrophobicity could be utilized to design surfaces for applications such as energy conservation, noise reduction, laminar-to-turbulent-transition delay, and mixing enhancement. A popular method of manufacturing a superhydrophobic surface is microfabrication in which well-designed microgrooves and/or poles are placed on a surface in a regular configuration. This method is a costly process and cannot easily be applied to large-scale objects with arbitrary shapes. In this work, we fabricated and characterized simpler low-cost superhydrophobic coatings based on controlling the volume of entrapped air in order to enhance durability (longevity) and the properties of the coating bringing the technology closer to large-scale submerged bodies such as submarines and ships. Two different low-cost fabricating techniques have been utilized: (i) random deposition of hydrophobic aerogel microparticles; and (ii) deposition of hydrophobic polymer micro- and nanofibers using DC-biased AC-electrospinning. The present study is aimed at providing experimental, numerical, and analytical models to characterize the superhydrophobicity and longevity of the coatings depending on the morphology of the surfaces and the concentration of the hydrophobic materials. The surface's micro/nanostructure were observed by field emission scanning electron microscopy. The degree of hydrophobicity of the coatings was estimated using drag-reduction and contact-angle measurements using a rheometer and a goniometer respectively. Furthermore, We have advanced and calibrated a novel optical technique to noninvasively measure the longevity of submerged superhydrophobic coatings subjected to different environmental conditions. We have also modeled the performance of superhydrophobic surfaces comprised of randomly distributed roughness. The numerical simulations are aimed at improving our understanding of the drag-reduction effect and the stability of the air–water interface against pressure in terms of the microstructure parameters. Moreover, we have experimentally characterized the terminal pressure (i.e. the pressure at which the air–water interface completely fails) of aerogel coatings with different morphologies.

The goal of this study is to quantify the transient performance of microfabricated superhydrophobic surfaces when used in underwater applications. A mathematical framework is developed and used to predict the stability, longevity, and drag reduction benefits of submerged superhydrophobic surfaces with two- or three-dimensional micro-textures. In addition, a novel design is proposed to improve the drag-reduction benefits of lubricant-infused surfaces, by placing a layer of trapped air underneath the lubricant layer. The new design is referred to as lubricant–infused surfaces with trapped air, and it is designed to eliminate the long-lasting longevity problem of submerged superhydrophobic surfaces. The effectiveness of liquid-infused surface with trapped air design was examined via numerical simulation, and it was found to outperform its liquid-infused surface counterpart by about 37%.

The design and validation of a low-level backstepping controller for speed and heading that is adaptive in speed for a twin-hulled underactuated unmanned surface vessel is presented. Consideration is given to the autonomous launch and recovery of an underwater vehicle in the decision to pursue an adaptive control approach. Basic system identification is conducted and numerical simulation of the vessel is developed and validated. A speed and heading controller derived using the backstepping method and a model reference adaptive controller are developed and ultimately compared through experimental testing against a previously developed control law. Experimental tests show that the adaptive speed control law outperforms the non-adaptive alternatives by as much as 98% in some cases; however heading control is slightly sacrificed when using the adaptive speed approach. It is found that the adaptive control law is the best alternative when drag and mass properties of the vessel are time-varying and uncertain. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2014. / FAU Electronic Theses and Dissertations Collection