Mechanical structure-property relations have been quantified for AISI 4140 steel under different strain rates and temperatures. The structure-property relations were used to calibrate a microstructure-based internal state variable plasticity-damage model for monotonic tension, compression and torsion plasticity, as well as damage evolution. Strong stress state and temperature dependences were observed for the AISI 4140 steel. Tension tests on three different notched Bridgman specimens were undertaken to study the damage-triaxiality dependence for model validation purposes. Fracture surface analysis was performed using Scanning Electron Microscopy (SEM) to quantify the void nucleation and void sizes in the different specimens. The stress-strain behavior exhibited a fairly large applied stress state (tension, compression dependence, and torsion), a moderate temperature dependence, and a relatively small strain rate dependence.

Verksamheters säkerhetsproblem i samband med informationssystem och informationsteknik (IS/IT) är ett område som uppmärksammats kraftigt de senaste åren. Denna avhandling syftar till att ge en ökad förståelse av informationssäkerhet; begreppet i sig, dess hantering i verksamheter samt dess betydelse för verksamheter. För att nå en ökad förståelse för informationssäkerhet och dess hantering består avhandlingen till stora delar av konceptuella resonemang. Avhandlingens huvudsakliga kunskapsbidrag är: - En kritisk granskning och en revidering av den begreppsapparat som dominerar i Sverige inom området informationssäkerhet och dess hantering. - En generisk modell (ISV-modellen) avseende verksamheters hantering av informationssäkerhet. ISV-modellen beskriver vilka grundläggande förutsättningar, aktiviteter, resultat och konsekvenser som kan kopplas till hantering av informationssäkerhet i verksamheter. Informationssäkerhetsområdet betraktas utifrån ett perspektiv som har sin grund i Skandinavisk informationssystemforskning. Ett viktigt kännetecken hos detta perspektiv är att IS/IT betraktas i en verksamhetskontext där bl a människors roller och aktiviteter utgör en viktig del. Studien bygger på både teoretiska och empiriska studier som har skett parallellt och genom växelverkan. De teoretiska studierna har främst bestått av litteraturstudier och konceptuellt modellerande som har konfronterats med empiriskt material vilket huvudsakligen har hämtats genom en fallstudie på en kommun i Bergslagen.

We study the space-time characteristics of global tropical rainfall. The data used is from the Tropical Rainfall Measuring Mission (TRMM) and spans the years 2000-2009. Using anomaly fields constructed by removing a single mean and by subtracting the climatology of the ten year dataset, we extract the dominant modes of variability of tropical rainfall from an Empirical Orthogonal Function (EOF) analysis. To our knowledge, this is the first attempt at applying the EOF formal-ism to high spatio-temporal resolution global tropical rainfall. Spatial patterns and temporal indices obtained from the EOF analysis with single annual mean removed show large scale patterns associated with the seasonal cycle. Even though the seasonal cycle is dominant, the principal component (PC) time series show fluctuations at subseasonal scales. When the climatological mean is removed, spatial patterns of the dominant modes resemble features associated with tropical intraseasonal variability (ISV). Correspondingly, the signature of a seasonal cycle is relatively suppressed, and the PCs have prominent fluctuations at subseasonal scales. The significance of the leading EOFs is demonstrated by means of a novel ratio plot of the variance captured by the leading EOFs to the variance in the data. This shows that, in regions of high variability (which go hand in hand with high rainfall), the EOF/PC pairs capture a fair amount of the variance (up to 20% for the first EOF/PC pair) in the data. We then pursue an EOF analysis of the finest data resolution available. In particular, we per-form a regional analysis (a global analysis is beyond our present computational resources) of the tropics with 0.25◦×0.25◦, 3-hourly data. The regions we focus on are the Indian region, the Maritime Continent and South America. The spatial patterns obtained reveal a rich hierarchical structure to the leading modes of variability in these regions. Similarly, the PCs associated with these leading spatial modes show variability all the way from 90 days to the diurnal scale. With the results from EOF analysis in hand, we quantify the multiscale spatio-temporal structures encountered in our study. In particular, we examine the power spectra of the PCs and EOFs. A robust feature of the space and time spectra is the distribution of energy or variance across a range of scales. On the temporal front, aside from a seasonal and diurnal peaks, the variance scales as a power-law from a few days to the 90 day period. Similarly, below the planetary scale, from approximately 5000 km to 200 km the spatial spectrum also follows a power-law. Therefore, when trying to understand the variability of tropical rainfall, all scales are important, and it is difficult to justify a focus on isolated space and time scales.

This study aims to investigate the mechanical and fatigue behavior of additively manufactured metallic materials. Several challenges associated with different metal additive manufacturing (AM) techniques (i.e. laser-powder bed fusion and direct laser deposition) have been addressed experimentally and numerically. Experiments have been carried out to study the effects of process inter-layer time interval – i.e. either building the samples one-at-a-time or multi-at-a-time (in-parallel) – on the microstructural features and mechanical properties of 316L stainless steel samples, fabricated via a direct laser deposition (DLD). Next, the effect of building orientation – i.e. the orientation in which AM parts are built – on microstructure, tensile, and fatigue behaviors of 17-4 PH stainless steel, fabricated via a laser-powder bed fusion (L-PBF) method was investigated. Afterwards, the effect of surface finishing – here, as-built versus machined – on uniaxial fatigue behavior and failure mechanisms of Inconel 718 fabricated via a laser-powder bed fusion technique was sought. The numerical studies, as part of this dissertation, aimed to model the mechanical behavior of AM materials, under monotonic and cyclic loading, based on the observations and findings from the experiments. Despite significant research efforts for optimizing process parameters, achieving a homogenous, defectree AM product – immediately after fabrication – has not yet been fully demonstrated. Thus, one solution for ensuring the adoption of AM materials for application should center on predicting the variations in mechanical behavior of AM parts based on their resultant microstructure. In this regard, an internal state variable (ISV) plasticity-damage model was employed to quantify the damage evolution in DLD 316L SS, under tensile loading, using the microstructural features associated with the manufacturing process. Finally, fatigue behavior of AM parts has been modeled based on the crack-growth concept. Using the FASTRAN code, the fatigue-life of L-PBF Inconel 718 was accurately calculated using the size and shape of process-induced voids in the material. In addition, the maximum valley depth of the surface profile was found to be an appropriate representative of the initial surface flaw for fatigue-life prediction of AM materials in an as-built surface condition.

Abstract The diurnal cycle is a dominant mode of sea surface temperature (SST) variability in trop-ical oceans, that influences air-sea interaction and climate processes. Diurnal variability of SST generally ranges from ~0.1 to 2.0◦C and is controlled by atmospheric fluxes of heat and momentum. In the present study, the response of intraseasonal variability (ISV) of SST in the Bay of Bengal (BoB) to diurnal atmospheric forcings, during the summer monsoon of 2007, has been examined using an Ocean General Circulation Model (OGCM). The model is based on the Modular Ocean Model Version 4 (MOM4p0), having a horizontal resolution of 0.25◦ and 40 vertical levels, with a fine resolution of 5 m in the upper 60 m. Numerical experiments were conducted by forcing the model with daily and hourly atmospheric forcings to examine the SST-ISV modulation with the diurnal cycle. Additional experiments were performed to determine the relative role of diurnal cycle in solar radiation and winds on SST and mixed layer depth (MLD). Since salinity, which is decisive in SST variability, varies meridionally in the BoB, two locations were selected for analyses: one in the northern bay at 89◦E, 19◦N where salinity is lower and the other in the southern bay at 90◦E, 8◦N where salinity is higher, as well as observations are available from Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA) buoy for comparision with model simulation. Diurnal atmospheric forcings modify SST-ISV in both southern and northern bay. SST-ISV in the southern bay, is dominantly controlled by the diurnal cycle of insolation, while in the northern bay, diurnal cycle of insolation and winds have comparable contribution. Diurnal cycle enhanced the amplitude of 3 selected intraseasonal events in the southern bay and 3 out of the 6 events in the northern bay, during the study period. In the southern bay, simulated SST variability with hourly forcing was closer to the observations from RAMA, implying that incorporating the diurnal cycle in model forcing rectifies SST-ISV. Moreover, SST obtained with diurnal forcing consists of additional fluctuations at higher frequencies within and in between intraseasonal events; such fluctuations are absent with daily forcing. The diurnal variability of SST is significant during the warming phase of intraseasonal events and reduces during the cooling phase. Diurnal amplitude of SST decreases with depth; depth dependence also being larger during the warming phase. SST-ISV modulation with diurnal forcing results from the diurnal cycle of upper ocean heat fluxes and vertical mixing. Diurnal warming and cooling result in a net gain or loss of heat in the mixed layer after a day’s cycle. When the retention (loss) of heat in the mixed layer increases with diurnal forcing during the warming (cooling) phase of intraseasonal events, the daily mean SST rise (fall) becomes higher, amplifying the intraseasonal warming (cooling). In the southern bay, SST-ISV amplification is mainly controlled by the diurnal variability of MLD, which modifies the heat fluxes. Increased intraseasonal warming with diurnal forcing results from the increase in radiative heating, due to the shoaling of the daytime mixed layer. Amplified intraseasonal cooling is dominantly con-trolled by the strengthening of sub-surface processes, due to the nocturnal deepening of mixed layer and increased temperature gradients below the mixed layer. In the northern bay, SST-ISV modulation with diurnal forcing is not as large as that in the southern bay. The mean increase in SST-ISV amplitudes with diurnal forcing is ~0.16◦C in the southern bay, while it is only ~0.03◦C in the northern bay. Reduced response of SST-ISV to diurnal forcings in the northern bay is related to the weaker diurnal variability of MLD. Salinity stratification limits diurnal variability of mixed layer in the northern bay, unlike in the southern bay. The seasonal (June - September) mean diurnal amplitude of MLD is ~15 m in the southern bay, while it is reduced to ~1.5 m in the northern bay. Diurnal variability of MLD, spanning only a few meters is not sufficient to create large modifications in mixed layer heat fluxes and SST-ISV in the northern bay. The vertical resolution of the model limits the shallowing of mixed layer to 7.5 m, thus restricting the diurnal variability of simulated MLD.

In this thesis, we investigated modes of intraseasonal variability (ISV) observed in the Indian monsoon rainfall and how these modes modulate rainfall over India. We identified a decreasing trend in the intensity of low-frequency intraseasonal mode with increasing strength in synoptic variability over India. We also made an attempt to understand the reason for these observed trends using numerical simulations. In the first part of the thesis, satellite rainfall estimates are used to understand the spatiotem-poral structures of convection in the intraseasonal timescale and their intensity during boreal sum-mer over south Asia. Two dominant modes of variability with periodicities of 10–20-days (high-frequency) and 20–60-days (low-frequency) are found, with the latter strongly modulated by sea surface temperature. The 20–60-day mode shows northward propagation from the equatorial In-dian Ocean linked with eastward propagating modes of convective systems over the tropics. The 10–20-day mode shows a complex space-time structure with a northwestward propagating anoma-lous pattern emanating from the Indonesian coast. This pattern is found to be interacting with a structure emerging from higher latitudes propagating southeastwards. This could be related to ver-tical shear of zonal wind over northern India. The two modes exhibit variability in their intensity on the interannual time scale and contribute a significant amount to the daily rainfall variability in a season. The intensities of the 20–60-day and 10–20-day modes show significantly strong inverse and direct relationship, respectively, with the all-India June–September rainfall. This study also establishes that the probability of occurrence of substantial rainfall over central India increases significantly if the two intraseasonal modes simultaneously exhibit positive anomalies over the region. There also exists a phase-locking between the two modes. In the second part of the thesis, we investigated the changing nature of these intraseasonal modes over Indian region, and their association with extreme rainfall events using ground based observed rainfall. We found that the relative strength of the northward propagating 20–60-day mode has a significant decreasing trend during the past six decades, possibly attributed to the weakening of large-scale circulation in the region during monsoon. This reduction is compensated by a gain in synoptic-scale (3–9 days) variability. The decrease in the low-frequency ISV is associated with a significant decreasing trend in the percentage of extreme events during the active phase of the monsoon. However, this decrease is balanced by a significant increasing trend in the percentage of extreme events in break phase. We also find a significant rise in occurrence of extremes during early- and late-monsoon months, mainly over the eastern coastal regions of India. We do not observe any significant trend in the high-frequency ISV. In the last part of the thesis, we used numerical simulations to understand the observed changes in the ISV features. Using the atmospheric component of a global climate model (GCM), we have performed two experiments: control experiment (CE) and heating experiment (HE). The CE is the default simulation for 10 years. In HE, we prescribed heating in the atmosphere in such a way that it mimics the conditions for extreme rainfall events as observed over central India during June– September. Heating is prescribed primarily during the break phase of the 20–60-day mode. This basically increases the number of extremes, majority of which are in break phase. The design of the experiment reflects the observed current scenario of increased extreme events during breaks. We found that the increased extreme events in the HE decreased the intensity of the 20–60-day mode over the Indian region. This reduction is associated with a reduction of rainfall in active phase and increase in the length of break phase. A reduction in the seasonal mean over India is also observed. The reduction of active phase rainfall is linked with an increased stability of the atmosphere over central India. Lastly, we propose a possible mechanism for the reduction of rainfall in active phase. We found that there is a significant reduction in the strength of the vertical easterly shear over the northern Indian region during break–active transition phase. This basically weakens the conditions for the growth of Rossby wave instability, thereby elongating break phase and reducing the rainfall intensity in the following active phase. This study highlights the redistribution of rainfall intensity among periodic (low-frequency) and non-periodic (extreme) modes in a changing climate scenario, which is further tested in a modeling study. The results presented in this thesis will provide a pathway to understand, using observations and numerical model simulations, the ISV and its relative contribution to the Indian summer monsoon. It can also be used for model evaluation.

Web Systems are widely used and accepted due to their advantages over traditional desktop applications. Modernization of existing non-Web software towards the Web, however, is a complex and challenging task due to Legacy System characteristics. Independent Software Vendors are struggling to commence Web Migration because of the involved effort and risk. Through systematic field research and problem analysis, this situation is further analyzed, deriving a set of requirements that represent the effort and risk concerns and are used to assess the state of the art in the field. Existing Web Migration research exhibits gaps concerning dedicated approaches for the initial phase and feasibility of the proposed strategies with limited resources and expertise. This thesis proposes a solution to address the shortcomings above and support Independent Software Vendors to commence Web Migration, focusing on effort and risk. The main idea is to provide a set of dedicated solutions to close the identified gaps in the form of a methodology and a supporting toolsuite that transfer paradigms successfully solving similar problems in other areas of computer science into the Web Migration domain. These solutions constitute the proposed approach called Agile Web Migration for SMEs (AWSM), consisting of methods, tools, principles, and formalisms for reverse engineering, risk management, customer impact control, and migration strategy selection. The thesis describes the research on the devised ideas in the context of a collaboration project with an Independent Software Vendor. Applicability and feasibility of the concepts are demonstrated in several evaluation experiments, integrating empirical user studies and objective measurements. The thesis concludes with an evaluation based on requirements assessment and application of the solutions in the application scenario, and it provides an outlook towards future work.:1 Introduction 2 Requirements Analysis 3 State of the Art 4 Addressing Effort and Risk Concerns in Web Migration 5 AWSM Reverse Engineering Method 6 AWSM Risk Management Method 7 AWSM Customer Impact Control Method 8 Evaluation 9 Conclusion and Outlook / Web-basierte Software-Systeme werden weithin verwendet und akzeptiert aufgrund ihrer Vorteile gegenüber traditionellen Desktopanwendungen. Die Modernisierung von Nicht-Web-Software zu Web-Software stellt jedoch wegen der Charakteristika von Legacy-Systemen eine komplexe und herausfordernde Aufgabe dar. Unabhängigen Softwareproduzenten (Independent Software Vendors) fällt es schwer, Web Migration zu initiieren aufgrund des damit einhergehenden Aufwands und Risikos. Durch systematische Primärerhebungen und Problemanalyse wird diese Situation weitergehend untersucht und eine Reihe von Anforderungen abgeleitet, welche die Aufwands- und Riskobedenken repräsentieren und verwendet werden, um den Stand der Technik in diesem Gebiet zu bewerten. Existierende Web Migration Forschung weist Mängel hinsichtlich von dedizierten Ansätzen für die initiale Phase und der Machbarkeit der vorgeschlagenen Strategien mit begrenzten Ressourcen und begrenzter Expertise auf. Diese Dissertation schlägt eine Lösung für die oben ausgeführten Mängel vor, um unabhängige Softwareproduzenten bei der Initiierung einer Web Migration zu unterstützen, welche sich auf ihre Bedenken bezüglich des Aufwands und Risikos fokussiert. Die Grundidee ist es eine Sammlung von dedizierten Lösungen für die identifizierten Mängel in Form einer Methodologie und einer Reihe von unterstützenden Werkzeugen anzubieten, welche Paradigmen, die erfolgreich ähnliche Probleme in anderen Gebieten der Informatik lösen konnten, in die Web Migration Domäne transferieren. Diese Lösungen ergeben den vorgeschlagenen Ansatz, Agile Web Migration for SMEs (AWSM), welcher aus Methoden, Werkzeugen, Prinzipien und Formalismen für Reverse Engineering, Riskomanagement, Customer Impact Control und Migrationsstrategieauswahl bestehen. Die Dissertation beschreibt die Forschung an den im Rahmen einer Industriekooperation mit einem unabhängigen Softwareproduzenten entwickelten Ideen. Anwendbarkeit und Machbarkeit der Konzepte werden in mehreren Evaluationsexperimenten, welche empirische Nutzerstudien mit objektiven Messungen verbinden, demonstriert. Die Dissertation schließt mit einer bewertenden Evaluation basierend auf den Anforderungen und auf dem Einsatz der Lösungen im Anwendungsszenario, sowie einem Ausblick auf weiterführende Arbeiten.:1 Introduction 2 Requirements Analysis 3 State of the Art 4 Addressing Effort and Risk Concerns in Web Migration 5 AWSM Reverse Engineering Method 6 AWSM Risk Management Method 7 AWSM Customer Impact Control Method 8 Evaluation 9 Conclusion and Outlook

Submitted by Filipe dos Santos (fsantos@pucsp.br) on 2018-09-19T10:19:41Z No. of bitstreams: 1 Juliana Fonseca de Oliveira Neri.pdf: 2666600 bytes, checksum: 70992a90260dbfd5ee07118564b4bb6f (MD5) / Made available in DSpace on 2018-09-19T10:19:41Z (GMT). No. of bitstreams: 1 Juliana Fonseca de Oliveira Neri.pdf: 2666600 bytes, checksum: 70992a90260dbfd5ee07118564b4bb6f (MD5) Previous issue date: 2018-08-24 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / This research aims to build knowledge about the presence of Intrafamily Sexual Violence (ISV) within the school in its implications for the school curriculum in order to improve the care of children and adolescents in learning situations. It is referenced in the critical theory of education and in the multicausal and interdisciplinary approach of the phenomenon of domestic violence against the child and the adolescent in its most silenced profile: the intrafamily sexual violence. The research was carried out with inspiration in the methodology of the critical-collaborative action research. It was accomplished through two stages of training conducted in the Municipal Network of Education of São Paulo. The first stage consisted of a round of training meetings with the teams of the Núcleos de Apoio e Acompanhamento da Aprendizagem (NAAPA) - Support and Learning Monitoring Centers - of 11 regional groups, reaching, in addition to the center teams, teachers, principals, assistant principals, pedagogical coordinators, supervisors and members of the social protection network, in a total of approximately 1,970 participants involved. The second stage consisted of a course organized in two regionals, with three groups composed mainly of teachers, but also of supervisors, principals, assistant principals and pedagogical coordinators, totaling 188 participants. The collected data were grouped into categories using content analysis. The analyzed context is marked by curricular public policies of neoliberal character, which are forged from international, national and local impositions (city of São Paulo). These policies proved to be prohibitive and/or cause difficulties in the construction of an emancipatory education aimed to social quality. This work points to the pursuit of curricular justice as an aid to the analysis and possibility of overcoming the curricular violence practiced by the hegemonic proposals of curriculum in coping with ISV. This search presupposes that the curriculum includes two fronts of action with regard to the theme: the preventive actions carried out by the teaching and learning of the rights and the proper referral of each case of ISV, which in turn requires adequate training of school staff and of all the agents of the network for the protection of children and adolescents. As a result of this trajectory, it was observed that the school staff are more sensitive to detect signs of violence, to increase the visibility of the problem and to understand the complexity and multi-causality of ISV, as well as the possibilities of constructing coping actions through the school curriculum. It is also pointed out the socialization of the knowledge built in the training process with all the school staff and the planning of actions / Esta pesquisa objetiva construir conhecimentos sobre a presença da Violência Sexual Intrafamiliar (VSI) no âmbito da escola em suas implicações para o currículo escolar de modo a aprimorar o atendimento de crianças e adolescentes em situação de aprendizagem. Está referenciada na teoria crítica da educação e na abordagem multicausal e interdisciplinar do fenômeno da violência doméstica contra a criança e o adolescente em sua face mais silenciada: o da violência sexual intrafamiliar. A pesquisa foi realizada com inspiração na metodologia da Pesquisa-ação crítico-colaborativa. Concretizou-se por meio de duas etapas de formações realizadas na Rede Municipal de Educação de São Paulo. A primeira etapa consistiu em uma rodada de encontros formativos com as equipes dos Núcleos de Apoio e Acompanhamento da Aprendizagem (NAAPA) de 11 regionais, alcançando, além das equipes dos núcleos, professores, diretores, vice-diretores, coordenadores pedagógicos, supervisoras e membros da rede de proteção social, em um total aproximado de 1.970 participantes envolvidos. A segunda etapa consistiu em um curso organizado em duas regionais, com três turmas compostas majoritariamente por professores, mas também por supervisoras, diretores, vice-diretores e coordenadores pedagógicos, totalizando 188 participantes. Os dados coletados foram agrupados em categorias utilizando-se da análise de conteúdo. O contexto analisado está marcado por políticas públicas curriculares de caráter neoliberal, que se forjam a partir de imposições internacionais, nacionais e locais (município de São Paulo). Essas políticas mostraram-se impeditivas e/ou dificultadoras para a construção de uma educação emancipatória que visa a qualidade social. Este trabalho aponta a busca da justiça curricular como auxílio para análise e possibilidade de superação das violências curriculares praticadas pelas propostas hegemônicas de currículo no enfrentamento da VSI. Essa busca supõe que o currículo inclua duas frentes de atuação no que diz respeito à temática: a das ações preventivas realizadas pelo ensino-aprendizagem dos direitos e a do encaminhamento adequado de cada caso de VSI que, por sua vez, exige formação adequada dos trabalhadores da escola e de todos os agentes da rede de proteção da criança e do adolescente. Como resultado do percurso, observou-se maior sensibilidade dos trabalhadores para detectar sinais de violência, a ampliação da visibilidade do problema e da compreensão acerca da complexidade e da multicausalidade da VSI, assim como das possibilidades de construção de ações de enfrentamento por meio do currículo escolar. Aponta-se, ainda, a socialização dos saberes construídos nas formações com todos os trabalhadores da escola e o planejamento de ações

Dans cette enquête ethno-sociologique sur la solidarité internationale au Maroc auprès de 24 ONG (de nationalités française, espagnole, italienne, canadienne et marocaine), nous avons pris le parti de focaliser notre recherche sur les expatriés et le personnel national (de 9 nationalités différentes) en tenant compte du sens que donnent les acteurs à cet engagement et ces pratiques de solidarité internationale tout en restituant les parcours et les conditions sociales de l’entrée dans la solidarité internationale.La première partie sera consacrée à la description du cadre d’intervention des ONG internationales au Maroc et les catégories objectives du personnel humanitaire : volontaire, stagiaire, bénévole et salarié. Puis, nous présenterons les processus de recrutement et les activités menées dans les ONG internationales tels qu’ils sont décrits par les acteurs. En définitive, nous questionnerons la tension entre travail et engagement, l’enchantement et le désenchantement.Dans un deuxième temps, nous nous attacherons à décrire les caractéristiques sociologiques des 68 acteurs humanitaires rencontrés en mettant en exergue les déterminants objectifs et subjectifs de l’engagement et du travail dans ce domaine d’activité. Nous finirons par établir une typologie des pratiques de la solidarité internationale donnant à voir un éthos commun d’une communauté partageant des affinités et des expériences culturelles d’autre part nous envisagerons les acteurs de la solidarité internationale comme un groupe professionnel.Enfin, la troisième section sera consacrée à questionner d’une part la pratique migratoire que constitue la mission de solidarité internationale et d’autre part les capitaux et pré-dispositions nécessaires pour la concrétiser. Nous montrerons que l’analyse du travail et de l’engagement via le cosmopolitisme permet de comprendre le sens à la fois objectif et subjectif que revêt ce type d’activité expatriée. Finalement, le travail en ONG est un moyen pour se réaliser et s’émanciper entre filiation et désaffiliation. Alors que cette action transnationale, orientée en valeurs et vers les autres, suppose une rencontre cosmopolite réussie, nous examinerons, à l’aune de la vie quotidienne, les décalages entre la rencontre attendue et la rencontre réalisée. / This dissertation contributes to the work of international solidarity NGOs in Morocco through examining the motivations and commitments of their personals. The research focuses on expatriates and national staff, by analysing their career paths and social background, as well as taking into account the sense given to their personal commitments and professional practices while involving in the international solidarity work. The first part devoted to describe the intervention framework of international NGOs in Morocco and the objective of different categories of their humanitarian personals: trainee, volunteer and employee. It examines the processes of recruitment and activities / projects implemented by these international NGOs. Hence, it sought to understand the tensions between job requirements and personal commitments that produced both enchantment and disenchantment among the international solidarity staff. The second part intended to study the sociological characteristics of 68 humanitarian personals that are interviewed from French, Canadian, Spanish, Italian and Moroccan organizations. It highlights the objective and subjective factors that determine their personal commitments and professional performance in this field of work. Therefore, a typology of practices for international solidarity work was set to identify the common ethos within a shared community of different affinities and cultural backgrounds. In addition, it considered the international solidarity actors as professional group. The third part was questioning the migratory practice of the international solidarity mission on the one hand and the financial and pre-arrangements necessary to realize it on the other hand. Furthermore, cosmopolitanism analysis of job requirements and personal commitments was conducted in order to understand the meaning of both objective and subjective in this type of work for the expatriates. Finally, working with international solidarity NGOs becomes a way of achieving and emancipating between affiliation and disaffiliation. While this transnational action is based on values toward others and supposed to develop a successful cosmopolitan encounter, findings from this study reveal the gaps between the expectations and the achievements. / En esta investigación etno-sociológica sobre la solidaridad en Marruecos (24 ONG de nacionalidad francesa, española, italiana, marroquí, canadiense), hemos centrado el estudio sobre los empleados expatriados y locales (de 9 nacionalidades diferentes) considerando a la vez el significado que los actores dan a este compromiso y a las prácticas de solidaridad restituyendo las carreras y las condiciones sociales de la entrada en la ONG. La primera parte está dedicada a la descripción del marco de intervención de las ONG internacionales en Marruecos y las categorías objetivas de los empleados humanitarios: voluntarios, asalariados, voluntarios no retribuidos y pasantes. Después, expondremos los procedimientos de selección y las actividades cumplidas. Finalmente, preguntaremos la tensión entre el trabajo y el compromiso, el encanto y el desencanto que produce el trabajo humanitario. Luego en la segunda parte, realizaremos la descripción de las características sociales de los 68 empleados destacando los determinantes objetivos y subjetivos del compromiso y del trabajo en este sector profesional. Acabaremos estableciendo una tipología de las prácticas de la solidaridad internacional dando a ver un ethos común de una comunidad compartiendo experiencias culturales considerándola como un grupo profesional. Por fin, la tercera parte será centrada por una vez preguntando la práctica migratoria que constituye la misión de solidaridad internacional y por otra vez las predisposiciones necesarias para su realización. Vamos a demostrar que el análisis del compromiso y del trabajo humanitario vía el cosmopolitismo permite entender el sentido objetivo y subjetivo que lleva este tipo de actividad. Finalmente, el trabajo humanitario es un medio para realizarse y emanciparse entre filiación y desafiliación. Mientras esta actividad internacional de valor y dirigida hacia los otros, supone un encuentro cosmopolita exitoso, examinaremos la vida cotidiana de los actores para destacar las disparidades entre un encuentro tan esperado y el encuentro cumplido. / In questa inchiesta etnico-sociologica sulla solidarietà internazionale in Marocco – che prende in esame 24 ONG (di nazionalità francese, spagnola, italiana, canadese e marocchina) – abbiamo scelto di focalizzare la nostra ricerca sugli espatriati e sul personale nazionale (di 9 nazionalità diverse) tenendo conto del senso che gli agenti hanno dato a questo impegno e a queste pratiche di solidarietà internazionale e ricostruendo i percorsi e le condizioni sociali dalla loro entrata nella solidarietà internazionale. La prima parte sarà dedicata alla descrizione dell’intervento delle ONG internazionali in Marocco e alle categorie oggettive del personale umanitario: volontari, stagisti, impiegati. Successivamente, presenteremo in cosa consiste il processo di selezione e assunzione del personale e parleremo delle attività svolte nelle ONG internazionali, esattamente come vengono descritte dagli agenti stessi. In ultima analisi, ci interrogheremo sulla tensione tra lavoro e impegno, ciò a cui aspiriamo e ciò che effettivamente realizziamo. In un secondo momento, descriveremo le caratteristiche sociologiche dei 68 agenti umanitari che abbiamo incontrato, valorizzando le caratteristiche oggettive e soggettive dell’impegno e del lavoro in questo campo di attività. Finiremo per stabilire l’esistenza di un modello di pratica di solidarietà internazionale, mostrando che esiste un ethos comune in una comunità che condivide delle affinità e delle esperienze culturali simili, e dall’altra parte prenderemo in considerazione gli agenti della solidarietà internazionale come gruppo professionale. Infine, la terza sezione sarà dedicata ad approfondire da una parte la pratica migratoria che la missione di solidarietà internazionale costituisce e dall’altra parte i capitali e le predisposizioni necessari per concretizzarla. Mostreremo, poi, che l’analisi del lavoro e dell’impegno permette di comprendere, attraverso il cosmopolitismo, il senso alla volta oggettivo e soggettivo che questo tipo di attività riveste. In ultimo possiamo dire che il lavoro in un’ONG è un mezzo per realizzarsi ed emanciparsi al di là dell’affiliazione e della disaffiliazione alle società. Poiché questa azione trans-nazionale, orientata ne dare valore agli altri, presuppone un incontro cosmopolita funzionante, esamineremo nella vita quotidiana, la differenza tra l’incontro atteso e quello che effettivamente abbiamo realizzato. / تعالج هذه الأطروحة القضايا المتصلة بالتضامن الدولي في المغ رب، وقد تم التركيز فيه على المغتربين والموظفينالوطنيين أخذا بعين الاعتبار المعنى الذي يعطوه هؤلاء الفاعلون لهذا الالتزام ولممارسات التضامن الدولي، مع استحضارالمسارات والشروط الاجتماعية التي أدت إلى دخولهم هذا العالم.وقد خصص الجزء الأول من هذه الأطروحة ل وصف إطار عمل المنظمات غير الحكومية الدولية في المغرب وأنواع أهدافهذه الفئة من الموظفين المشتغلين في المجال الإنساني: المتطوع وذا العالمن والمتدربون والموظفون. وكذا وصف مسلسلات انتقاءالمتعاقد معهم في كل واحدة من هذه الفئات والأنشطة التي تنظمها المنظمات غير الحكومية الدولية كما جاء وصفها علىلسان الفاعلين أنفسهم. حيث درسنا التوترات القائمة بين العمل المهني والالتزام الجمعوي، بين الرغبة الجامحة والإحباط.وقمنا في مرحلة ثانية بوصف الخاصيات والسمات الاجتماعية للفاعلين 68 الذين تم اللقاء بهم بمناسبة إعداد الأطر وحة،وكذا إماطة اللثام عن المحددات الموضوعية والذاتية للالتزام والعمل في هذا المجال. حيث انتهى بنا المطاف بتحديد نوعيةممارسات التضامن الدولي، القائمة على فكر مشترك تتقاسمه مجموعة لها قواسم وتجارب ثقافية مشتركة، على اعتبار العاملينفي هذا المجال مجموعة مهنية قائمة الذات.وعالج الجزء الثالث من الأطروحة ممارسة الهجرة المرتبطة بمهام التضامن الدولي وكذا الرساميل والمؤهلات المستبقة الضروريةلتجسيدها. وسنظهر أن تحليل هذه الجهود وهذا الالتزام عبر منظور الكونية كفيل بتوضيح الصورة وفهم المعاني الموضوعيةوالذاتية المتصلة بهذا النشاط. هذا ويعتبر العمل داخل المنظمات غير الحكومية أخيرا وسيلة لتحقيق الذات والتحرر ما بينالارتباط وفك الارتباط. حيث يقتضي هذا العمل العابر للحدود الوطنية، الموجه من حيث القيم والمستهدف للآخرين،نجاح اللقاء الكوني، وهو ما قمنا بفحصه انطلاقا من الحياة اليومية والتفاوت بين اللقاء المنتظر واللقاء الحقيقي.

<p></p><p>This doctoral dissertation takes the reader through a journey where applied shear rheology and flow-velocimetry are used to understand the mesoscopic factors that control the flow behavior of three microstructured fluids. Three individual protocols that measure relative physical and mechanical properties of the flow are developed. Each protocol aims to advance the particular transformation of novel soft materials into a commercial product converging in the demonstration of the real the chemical, physical and thermodynamical factors that could potentially drive their successful transformation. </p> <p> </p> <p>First, this dissertation introduces the use of rotational and oscillatory shear rheometry to quantify the solvent evaporation effect on the flow behavior of polymer solutions used to fabricate isoporous asymmetric membranes. Three different A-B-C triblock copolymer were evaluated: polyisoprene-<i>b</i>-polystyrene-<i>b</i>-poly(4-vinylpyridine) (ISV); polyisoprene-<i>b</i>-polystyrene-<i>b</i>-poly(<i>N</i>,<i>N</i>-dimethylacrylamide) (ISD); and polyisoprene-<i>b</i>-polystyrene-<i>b</i>-poly(<i>tert</i>-butyl methacrylate) (ISB). The resulting evaporation-induced microstructure showed a solution viscosity and film viscoelasticity strongly dependent on the chemical structure of the triblock copolymer molecules. </p> <p> </p> <p>Furthermore, basic shear rheometry, flow birefringence, and advanced flow-velocimetry are used to deconvolute the flow-microstructure relationships of concentrated surfactant solutions. Sodium laureth sulfate in water (SLE₁S) was used to replicate spherical, worm-like, and hexagonally packed micelles and lamellar structures. Interesting findings demonstrated that regular features of flow curves, such as power-law shear thinning behavior, resulted from a wide variety of experimental artifacts that appeared when measuring microstructured fluids with shear rheometry.</p> <p> </p> <p>Finally, the successful integration of shear rheometry to calculate essential parameters to be used in a cost-effective visualization technique (still in development) used to calculate the dissolution time of polymers is addressed. The use of oscillatory rheometry successfully quantify the viscoelastic response of polyvinyl alcohol (PVA) solutions and identify formulations changes such as additive addition. The flow behavior of PVA solutions was correlated to dissolution behavior proving that the developed protocol has a high potential as a first screening tool.</p><br><p></p>