In this study I have studied the European Unions suggestion about disembarkation of refugees from a human rights perspective - especially the perspective of human value and human dignity. Human dignity is central. It is expressed in the preamble to the UN Human Rights, as well as in its first paragraph; “Everyone has the right to dignity, and it shall not be violated.” I have studied refugees that have previously spent time in large refugee camps outside Europe, in Jordan and in Libya. In my study I use Libya as an example on what refugees can face in camps in third-world countries. The subject caught my attention since the Norwegian ship MS Tampa picked up refugees on international water outside Australia. The Norwegian captain tried to leave them on Australian land but was refused to do so. Australia sent a military boat to pick them up and left them at an island outside Australia. Moreover European politicians have discussed the idea of off-shore, placements of refugees at disembarkation camps as a way of solving the problem of huge number of refugees that are looking for asylum in Europe as well as the many deaths at the Mediterranean Sea. There has also been a discussion on quota refugees chosen by the UNHCR. This made me wonder how the situation would be for the remaining refugees that will stay in these large camps, maybe for years, as well as how their human rights are respected in camps outside Europe where Europe have no control? How does this correspond to the principle of human value? In my qualitative study I started by making a literature study. Thereafter continued with an interview study where I interviewed refugees that have stayed at camps outside Europe. The purpose of the interview and the study was to take part of their narratives and to make their voices heard. I found that the narrative of refugees is not heard, this makes them feel less valued as human, or not even a human. Their dignity is violated, and their human rights are not respected. Their interests have been forced to give way to the interest of the state.

改革開放為中國大陸創造了令人驚艷的經濟成長，卻也帶來區域不平衡的嚴重問題。近年來，中國大陸區塊化的發展受到各界關注，包括珠三角、長三角、環渤海區等。而長期以來受到忽略的福建省，終於在海西區的規劃中得到了來自中共中央的政策支持。福建擁有對台先行先試，探索兩岸進行區域合作試點的權力，在海西區的架構下，平潭綜合實驗區被中共中央寄與厚望，以「五個共同」積極與台灣進行各種創新合作，其中，最為人所注目的即是「共同治理」。本文認為，從目前中共中央給予平潭的各項政策利多及兩岸在此議題上的角力來看，兩岸「共同治理」，仍有許多問題亟待克服。

Text in English / Most Xhosa people experience the condition of feeling dislocated and confused when choosing a spiritual belief between Christianity and Xhosa ancestral traditions. This study uses the concept of diaspora to describe the mental dislocation that people whose culture has changed experience. This study is based on the phenomenon of diaspora as a state of identity in the contemporary cultural identity of amaXhosa, the people of the Eastern Cape Province, by exploring the interrelationship between the key concepts, namely, identity, culture, land, and home as they relate to ancestral worship and Christian practice. Two installation artworks by Bill Viola and Nicholas Hlobo were selected for a comparative analysis under the spectacle of Xhosa ancestral tradition. In this study, I seek to understand how identity is constructed within a particular geographical and ideological culture and how self-identity can be constituted through the construction, deconstruction, and reconstruction of cultural histories. Touching on notions of mediation, altar, and dislocation, this study uses Martin Buber’s concept of I AND THOU to weave the key concepts together. / Art History, Visual Arts and Musicology / M.A. (Visual Arts)

Le travail présenté dans cette thèse s’inscrit dans le champ de la géographie culturelle et veut participer à prouver qu’il existe un tournant spatial tel qu’il a été défini par Edward Soja en 1996, qui permet de porter un regard autre sur les sociétés en les analysant à partir des objets culturels qu’elles produisent. Les albums pour enfants, ces livres conçus pour le jeune public qui combinent images, supports et très souvent textes dans un rapport d’interdépendance, constituent les objets de ce travail de recherches. Envisagés comme des produits culturels géographiques, ils interrogent, disent, représentent et mettent en scène espaces et spatialités. S’intéressant à un corpus d’albums iconotextuels narratifs édités en France entre 1919 et 2012, ce travail s’emploie à démontrer qu’il existe une interdépendance entre trois instances narratives (textuelle, iconique et plastique) et que cette interdépendance génère et imagine non seulement de l’espace pour le lecteur mais également une intentionnalité spatiale, une transmission d’un habiter tel qu’il est pensé par l’auteur-illustrateur. La dernière partie de ce travail, plus exploratoire, propose de voir dans l’album pour enfants un lieu de communication dans lequel l’intentionnalité spatiale aiderait le lecteur-enfant à agir sur de l’espace. La réception, l’expérience esthétique, la lecture performative de l’album permettraient à l’enfant de se construire un capital culturel spatial dans lequel il pourrait puiser pour « faire avec » l’espace qu’il habite ou qu’il aura à habiter. / The work presented in this dissertation fits in the field of cultural geography and hopes to prove that there exists a spatial turning point as defined by Edward Soja in 1996, which will allow a further look into societies, analyzing them by means of the cultural objects that they produce.Children’s picture books, these books conceived for the young public which combine images, props, and very often text in a relationship of interdependence, constitute the objects of this research work. Considered as geographic cultural products, they question, state, represent, and stage spaces and spatialities.Drawing from a body of narrative, iconotextual picture books published in France between 1919 and 2012, this work intends to demonstrate that there exists an interdependence among three narrative instances (textual, iconic, and plastic) and that this interdependence generates and imagines not only space for the reader but also a spatial intentionality, a transmission of living such as envisioned by the author-illustrator.The last part of this work, more exploratory, proposes seeing in children’s books a place of communication in which the spatial intentionality would help the child-reader to act on the space. The reception, the esthetic experience, the performative reading of the picture book would allow the child to construct for himself a spatial cultural capital in which he could delve to “play with” the space in which he lives or that he will have to live.

Studies of the dunefield systems crossing the Cape St. Francis headland in the Eastern Cape have focused on the role that wind plays in sediment transfer in coastal dunefield systems, with limited consideration of the role of water. The aim of this study was to improve understanding of the morphology, processes and patterns within the Oyster Bay HBD system, focussing particularly on surface water and groundwater interactions and the role of surface water in sediment transfer across the dunefield system. An extensive field survey was conducted, to collect related data, complimented by spatial and temporal analysis of the study area using GIS. The key findings from this research were the apparent differences between the western and eastern regions of the dunefield with regard to specific drivers and the respective processes and responses. Wind is the major driver of change up to and across the crest of the dunefield. In the eastern region water (ground water, surface water and the Sand River System) is the primary agent of sediment flux through processes of aggregation and slumping as well as episodic events including debris flows. This study has highlighted a need for further quantitative studies that investigate the movement of sediment through dunefield systems such as this (where water is at or near the land surface). The paradigm that sediment flux is entirely due to wind is almost certainly simplistic, and deeper understanding of these systems is needed / Maiden name: Elkington, Lauren

This thesis investigates the impact of resonant overvoltages and their origin. Series and parallel resonances are present in any electrical grid. The frequency of which this resonance occurs is called resonance frequency. For parallel resonance, which is mainly being studied in this thesis, a high impedance peak can be found at the resonance frequency. This impedance peak in conjunction with a harmonic rich current cause a kind of temporary overvoltages called resonant overvoltages. The harmonic content of the current is high following a fault clearing in the grid, due to transformer saturation. The resonance frequency is heavily dependent on the amount of reactance present in the grid, which entail that a change in reactance causes a change in the resonance frequency. The electromagnetic transient tool PSCAD has been used to investigate resonant overvoltages following transformer energization caused by faults and switching in Stockholm. Secondly, a model was created of a grid connecting off-shore wind power to the mainland via long AC submarine transmission cables. These cables, having a high capacitance, lower the resonance frequency. Faults in this model were simulated to investigate the phenomenon of resonant overvoltages in such a grid. This was especially interesting due to Swedens planned expansion of wind power in the Baltic sea. While resonant overvoltages were found in Stockholm they were not deemed significant due to their low magnitude and longevity. However, severe resonant overvoltages were found in the off-shore wind farm model. The worst resonant overvoltages had a maximum amplitude of the 2nd order harmonic voltage of 130 kV which, while eventually damped, were significant for up to 50 periods. Lastly, the phenomenon of an increased resonance frequency during the saturation of a transformer was studied. The most severe resonant overvoltages occured in a model where the frequency scans showed a resonance frequency of 98 Hz. Indicating, caution needs to be had during EMT-studies of resonant overvoltages while choosing what resonance frequency to study.

Tesis por compendio / [ES] La Unión Europea plantea una serie de retos en el GREEN DEAL para conseguir un escenario donde sus miembros sean climáticamente neutros en 2050. Para ello se plantean unas acciones entre las que destaca la descarbonización del sector de la energía. Por otra parte, se ha puesto como objetivo conseguir una capacidad de energía eólica de 1200 GW en 2050, desde los 190 GW que se tenía en 2019. El cierre de centrales eléctricas basadas en grandes generadores síncronos junto con el aumento en la construcción de centrales eléctricas con fuentes basadas en electrónica de potencia como parques eólicos o plantas fotovoltaicas, hace necesario la incorporación de controladores grid forming en energías renovables basadas en electrónica de potencia. La integración de estrategias de control grid forming en turbinas eólicas debe considerar las funciones de reparto de potencia activa y reactiva (control droop en generadores síncronos), así como un sistema de protección ante faltas que permita una recuperación rápida cuando se despeja la falta. Por otra parte, en la transición de los actuales parques eólicos grid following que funcionan como fuentes de corriente a parques eólicos grid forming que funcionan como fuentes de tensión se debe considerar que ambas tecnologías van a coexistir conjuntamente por mucho tiempo. Por tanto, se hace necesario el estudio de estabilidad de parques eólicos con ambas tecnologías, así como el estudio de cuanta generación grid forming es necesaria para mantener el parque eólico estable en cualquier situación. Además, el uso de parques eólicos grid foming permite diferentes aplicaciones como la energización de redes eléctricas después de un apagón desde estos parques eólicos, o el uso de diodos rectificadores en enlaces HVDC para la conexión de parques eólicos marinos. Para facilitar el estudio y diseño de aerogeneradores grid forming, en la presente tesis se propone una técnica de agregación de aerogeneradores tipo-4. Esta técnica permite reducir la complejidad del parque eólico para su estudio y análisis. Esta tesis incluye las siguientes contribuciones: Para el funcionamiento de aerogeneradores grid forming en paralelo con aerogeneradores grid following se propone un método de diseño analizando la estabilidad del sistema completo. Además, se propone una estrategia de control ante faltas para asegurar una recuperación rápida y segura. Se propone el uso de técnicas de control H∞ para la sintonización de controladores grid forming. El uso de estas técnicas para el diseño de controladores puede mejorar la robustez de los controladores, así como el rendimiento de estos. Considerando la aplicación de la energización de redes HVAC desde parques eólicos, se ha propuesto como llevar a cabo dicha maniobra a partir de parque con aerogeneradores grid forming y grid following. Los resultados obtenidos validan el funcionamiento de la operación. Además, muestran que la cantidad de generación grid forming está relacionada con la dimensión de cargas que tienen que aguantar dichas turbinas más que con la estabilidad del sistema con un porcentaje bajo de generación grid forming. Finalmente, se han propuesto estrategias de protección para la integración de parque eólicos en redes malladas HVDC utilizando rectificadores de diodos. Los parques eólicos grid forming pueden ayudar a gestionar faltas disminuyendo los requisitos en las protecciones necesarias en el enlace HVDC. Esto permite una reducción del coste de la instalación, además de aumentar la robustez del sistema. / [CA] La Unió Europea planteja uns reptes al GREEN DEAL per a aconseguir un escenario on els seus membres siguen climàticament neutrals al 2050. Per a aconseguir aquest objectiu es plantegen unes accions entre les quals destaca la de descarbonitzar el sector energètic. D'altra banda, s'ha posat com a objectiu aconseguir una capacitat d'energia eòlica de 1200 GW al 2050, des dels 190 GW que es tenia al 2019. El tancament de centrals elèctriques basades en grans generadors síncrons juntament amb l'augment en la construcció de centrals elèctriques basades en electrónica de potència com a parcs eòlics o plantes fotovoltaiques, fa necessari la incorporació de controladors grid forming en energies renovables que es basan en electrònica de potència. La integració d'estratègies de control grid forming per a turbines eòliques ha de considerar les funcions de repartiment de potència activa i reactiva, així com un sistema de protecció davant faltes que permeta una recuperació ràpida quan s'aïlla la falta. D'altra banda, en la transició dels actuals parcs eòlics grid following que funcionen com a fonts de corrent a parcs eòlics grid forming que funcionen com a fonts de tensió, s'ha de considerar que totes dues tecnologies coexistiran conjuntament per molt de temps. Per tant, es fa necessari l'estudi d'estabilitat d'un parc eòlic amb totes dues tecnologies, així com l'estudi del percentatge de generació grid forming necessari per a mantindre el parc eòlic estable en qualsevol situació. A més, l'ús de parcs eòlics grid foming permet diferents aplicacions com l'energització de xarxes elèctriques després d'una apagada des d'aquests parcs eòlics, o l'ús de díodes rectificadors en enllaços HVDC per a la connexió de parcs eòlics marins. Per a facilitar l'estudi i disseny d'aerogeneradors grid forming, en la present tesi es proposa una tècnica d'agregació d'aerogeneradors tipus-4. Aquesta técnica permet reduir la complexitat del parc eòlic per al seu estudi i anàlisi. La present tesi inclou les següents contribucions: Per al funcionament d'aerogeneradors grid forming en paral¿lel amb aerogeneradors grid following es proposa un mètode de disseny analitzant l'estabilitat del sistema complet. A més, es proposa una estratègia de control davant faltes per a assegurar una recuperació ràpida i segura. Es proposa l'ús de tècniques de control H∞ per a la sintonització de controladors grid forming. L'ús d'aquestes tècniques per al disseny de controladors pot millorar la robustesa dels controladors, a mé del rendiment d'aquestos. Considerant l'aplicació de l'energització de xarxes HVAC des de parcs eòlics, s'ha proposat com dur a terme aquesta maniobra a partir d'un parc eòlic amb aerogeneradors grid forming i grid following. Els resultats obtinguts validen el funcionament de l'operació. A més, mostren que la quantitat de generació grid forming està més relacionada amb la dimensió de les càrregues que ha d'aguantar el parc eòlic, que amb l'estabilitat del sistema que permet un menr percentatge de generació grid forming. Finalment, s'han proposat estratègies de protecció per a la integració de parcs eòlics marins en xarxes multi-punt HVDC utilitzant rectificadors de díodes. Els parcs eòlics grid forming poden ajudar a gestionar faltes disminuint els requisits de les proteccions necessàries en l'enllaç HVDC. Això permet una reducció del cost de la instal¿lació, a més d'augmentar la robustesa del sistema. / [EN] The European Union GREEN DEAL aims to make its 27 members climate-neutral by 2050. The decarbonization of the energy sector stands out as one of the proposed actions. To achieve that goal, the target for wind power generation is set at 1,200 GW in 2050, from the 190 GW that was had in 2019. The closure of power plants based on large synchronous generators and the increase of power electronics based generation such as Wind Power Plants (WPPs) or photovoltaic plants, leads to the use of grid forming controllers for power electronics based renewable energy. Grid forming control strategies for wind turbines generators (WTGs) must consider active and reactive power sharing control (droop control in synchronous generators) as well as a protection system that allows a quick recovery after fault clearance. Moreover, a transition from the conventional grid following WPPs to new grid forming WPPs is required. The transition must consider the parallel operation of both technologies for a long time. Thus, it is necessary to study the stability of Wind Power Plants with both technologies, as well as the study of how much grid forming generation is required to keep a mixed grid forming and grid following WPP stable in any situation. In addition, the use of grid forming WPPs allows different applications such as the energization of HVAC and HVDC grids after a blackout from these WPPs, or the use of diode rectifiers in HVDC links for the off-shore WPPs connection. An aggregation technique for type-4 WTGs has been proposed in this thesis in order to facilitate the study and design of grid forming WPPs. The aggregation technique allows to reduce the WPP complexity for its study and analysis. The main contributions of this theses are: A design methodology has been proposed for the parallel operation of grid forming and grid following WTGs. Including the stability analysis of the complete system. Additionally, a fault control strategy is proposed to ensure a fast and safe recovery. The use of H∞ control techniques is also proposed for grid forming controller tuning. Using H∞ control techniques for controller design may improve the robustness of the controllers as well as the performance of the controllers. A procedure to carry out black start operation of HVAC grid from mixed grid forming and grid following WPPs has been proposed. The obtained results validate that the procedure works as expected. Moreover, the results show that the amount of grid-forming generation usually is determined by the load size steps as stability limits are usually less stringent. Finally, protection strategies have been proposed for the integration of off-shore WWPs in multi-terminal HVDC grids using diode rectifiers. Grid forming WPPs are able to help managing faults. Their use allow lower requirements of the HVDC protection equipment, leading to overall cost reduction and an increment of the system robustness. / Martínez Turégano, J. (2022). Grid Forming Wind Power Plants: Black start operation for HVAC grids and Diode Rectifier-based Wind Power Plant integration [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/181529 / TESIS / Compendio

År 2020 drabbades världen av Covid-19. Spridningen av viruset resulterade i att många länder upprättade en lockdown. Detta påverkade sjöfartsbranschen negativt och ställde till med problem när folk blev sjuka. Detta är på grund av den unika miljön som finns ombord på fartyg. Syftet med studien var att analysera och utvärdera hur olika fartyg och rederier agerade under covid-19-pandemin med fokus på effektivitet, framgång och problem när det kommer till smittskydd. Studiens frågeställningar berörde hur rederiers existerande smittskyddsplaner såg ut och huruvida de kan förbättras, vilka lärdomar som kan dras om smittspridning ombord på fartyg och huruvida en förbättrad smittskyddsplan kan konstrueras utifrån de som redan existerar. En kvalitativ metod i form av granskning och inläsning av studier i området smittspridning i allmänhet samt studier om utbrott av covid-19 ombord på fartyg. Smittskyddsplaner samlades in genom ett mailutskick till svenska rederier. Resultatet visar att rederierna efterlevde många av WHO:s riktlinjer där de även implementerade egna tillägg till den ombordhavna smittskyddsplanen. Vi kom även fram till att landbaserad assistans är en viktig komponent för att kunna bekämpa smittspridning ombord. / In 2020, the world was struck by Covid-19. The spread of the virus resulted with many countries establishing  lockdowns. This negatively affected the shipping industry and caused problems when people got sick. This is because of the unique environment that exists on board ships. The purpose of the study was to analyze and evaluate how different ships and shipping companies acted during the COVID-19 pandemic with a focus on efficiency, success and problems when it came to controlling the spread of infections. The study's questions concerned how shipping companies' infection control plans were complied with and whether they can be improved, what lessons can be learned about the spread of infections on board ships and whether an improved infection control plan can be constructed from those that already exist. A qualitative method of reviewing and reading studies in the field of infection control in general and studies on COVID-19 outbreaks on board ships. Infection control plans were collected through a mailing to Swedish shipping companies. The results showed that the shipping companies complied with many of the WHO's guidelines where they also implemented their own additions to the on-board infection control plan. We also came to the conclusion that land-based assistance is an important component for combating the spread of infections on board.

Les sites archéologiques du territoire côtier s’étirant entre le Saguenay–Lac-Saint-Jean et le nord du Labrador recèlent au moins 78 collections de perles de verre. Ces petits objets, témoins d’échanges interculturels formels et informels, peuvent constituer d’importants repères chrono-typologiques et pourtant, les nombreuses collections mises à jour dans cet espace n’ont pas été étudiées à leur plein potentiel. À partir des plus de 20 000 perles de verre sur ces sites, le présent mémoire construit d’abord une chrono-typologie propre à cet espace et à son histoire. Il procède par l’identification d’un corpus hautement diagnostique de 24 types de perle représentés sur 19 sites, des « fossiles directeurs » qui se démarquent visuellement pendant des périodes précises. Ensuite, le mémoire élabore des « complexes » de perles diagnostiques qui sont à la base d’une chrono-typologie régionale couvrant les années de vers 1580 à 1870. À partir de cette chrono-typologie, ce mémoire s’appuie sur la répartition régionale des perles, les connaissances sur les types de perles dont leurs provenances, et l’histoire de la navigation dans le territoire à l’étude et à travers l’Atlantique septentrional, afin de reconstituer les réseaux maritimes à l’œuvre entre l’Europe et les différents ports et havres sur la côte qui s’étend du Saguenay–Lac-Saint-Jean au nord du Labrador, en passant par le détroit de Belle-Isle. Il est possible de suivre le mouvement de ces témoins archéologiques dans l’espace maritime nord-atlantique pendant trois siècles, et d’observer des structures changeantes et/ou résistantes de ces réseaux maritimes à travers les complexes de perles de verre. Cette étude suit le système typologique de Kidd et Kidd (1970) et le modèle chrono-typologique des Glass Bead Periods de Kenyon et Kenyon (1983), permettant ainsi de lier ce travail à d’autres recherches spécialisées sur les perles de verre. / The archaeological sites along the coastal territory that stretches from Saguenay–Lac Saint-Jean to Northern Labrador possess at least 78 collections of glass beads. These small objects, testifying to both formal and informal intercultural exchanges, can serve as significant chrono typological references, and yet the numerous collections discovered in this area have not been studied to their full potential. Based on a total of over 20,000 glass beads found at these sites, this thesis first constructs a chrono-typology specific to this region and its history. It does so by identifying a highly diagnostic corpus of 24 bead types represented at 19 sites. These fossiles directeurs stand out visually during specific periods of time. Subsequently, the thesis defines “complexes” of diagnostic beads that form the basis of a regional chrono-typology covering there years from 1580 to 1870.Using this chrono-typology, this thesis relies on the regional distribution of beads, knowledge about the types of beads and their origins, and the history of navigation in the territory studied and across the northern Atlantic to reconstruct maritime networks at play between Europe and various ports and harbors along the coast extending from Saguenay–Lac-Saint-Jean to northern Labrador, passing through the Strait of Belle-Isle. It is possible to trace the movement of these artefacts in the North Atlantic maritime space over three centuries and to observe changing and/or enduring structures of these maritime networks through the glass bead complexes. This study follows the typological system of Kidd and Kidd (1970) and the chrono-typological model of Kenyon and Kenyon’s Glass Bead Periods (1983), thus connecting this work to other specialized research on glass beads.

Seafloor compliance is a non-intrusive geophysical method sensitive to the shear modulus of the sediments below the seafloor. A compliance analysis requires the computation of the frequency dependent transfer function between the vertical stress, produced at the seafloor by the ultra low frequency passive source-infra-gravity waves, and the resulting displacement, related to velocity through the frequency. The displacement of the ocean floor is dependent on the elastic structure of the sediments and the compliance function is tuned to different depths, i.e., a change in the elastic parameters at a given depth is sensed by the compliance function at a particular frequency. In a gas hydrate system, the magnitude of the stiffness is a measure of the quantity of gas hydrates present. Gas hydrates contain immense stores of greenhouse gases making them relevant to climate change science, and represent an important potential alternative source of energy. Bullseye Vent is a gas hydrate system located in an area that has been intensively studied for over 2 decades and research results suggest that this system is evolving over time. A partnership with NEPTUNE Canada allowed for the investigation of this possible evolution. This thesis describes a compliance experiment configured for NEPTUNE Canada’s seafloor observatory and its failure. It also describes the use of 203 days of simultaneously logged pressure and velocity time-series data, measured by a Scripps differential pressure gauge, and a Güralp CMG-1T broadband seismometer on NEPTUNE Canada’s seismic station, respectively, to evaluate variations in sediment stiffness near Bullseye. The evaluation resulted in a (- 4.49 x10-3± 3.52 x 10-3) % change of the transfer function of 3rd October, 2010 and represents a 2.88% decrease in the stiffness of the sediments over the period. This thesis also outlines a new algorithm for calculating the static compliance of isotropic layered sediments.