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The acquisition of remote sensing data having an investigated quality level constitutes an important step to advance our understanding of the vegetation response to environmental factors. Spaceborne sensors introduce additional challenges that should be addressed to assure that derived findings are based on real phenomena, and not biased or misguided by instrument features or processing artifacts. As a consequence, updates to incorporate new advances and user requirements are regularly found on most cutting edge systems such as the MODIS system. In this dissertation, the objective was to design, characterize and assess any possible departure from current values, a MODIS VI algorithm for restoring the continuity 16-day 1-km product, based on the new 8-day 500-m MODIS SR product scheduled for MODIS C6. Additionally, the impact of increasing the time resolution from 16 to 8 days for the future basic MODIS C6 VI product was also assessed. The performance of the proposed algorithm was evaluated using high quality reference data and known biophysical relationships at several spatial and temporal scales. Firstly, it was evaluated using data from the ASRVN, FLUXNET-derived ecosystem GPP and an analysis of the seasonality parameters derived from current C5 and proxy C6 VI collections. The performance of the 8-day VI version was evaluated and contrasted with current 16-day using the reported correlation of the EVI with the GPP derived from CO2 flux measurements. Secondly, we performed an analysis at spatial level using entire images (or "tiles") to assess the BRDF effects on the VI product, as these can cause biases on the SR and VIs from scanning radiometers. Lastly, we evaluated the performance of the proposed algorithm for detecting inter-annual VI anomalies from long-term time series, as compared with current MODIS VI C5. For this, we analyzed the EVI anomalies from a densely vegetated evergreen region, for the period July-September (2000-2010). Results showed a high general similarity between results from both algorithms, but also systematic differences, suggesting that proposed algorithm towards C6 may represent an advance in the reduction of uncertainties for the MODIS VI product.

This paper is about the construction of a ”Swedish” identity in the novel Montecore: en unik tiger by Jonas Hassen Khemiri (translated in English to Montecore: the silence of the tiger). In the paper I start by, after a short introduction, introducing the theoretical background against which the novel will be analyzed. The main focus is postcolonial theories with Edward Saids work about making “the Other” as a base. I then go through some contemporary Swedish studies about race as a category and internalized racism, make a brief introduction to performativity, to finish with the thought provoking theories about the cyborg by Donna J. Haraway. In the section about method I present discourse analysis and the social constructionism that permeates postcolonial studies and discourse analysis and therefore the paper. Finally I analyze the material. In this section I use made-up dialogues to illustrate the different positions the characters take when responding to the imagined community that is Sweden, and the conditions imposed on those wanting to be accepted as Swedes. I use policy documents of a Swedish political party, Sverigedemokraterna (the Sweden Democrats) as a counterpart in the dialogues. Thereafter I have a short conclusion, and then you’re free.

To categorise people is by society viewed as a basic cognitive process. The process is described to occur frequently. The purpose of this study was to investigate teachers experience and views concerning the categorization "we and them", and its relationship to the education of religion. The study aims to explore how the categorisation is expressed and valued. The study also aims to investigate the relationship between the teaching and the student groups heterogeneity/homogeneity, but also the relationship between the categorisation and the teaching. The data was conducted true semi-structured interviews with experienced teachers. The results of the study showed that "we and them" exist in the education of religion. The results of the study did not show an unambiguous perception of how the categorisation is expressed and viewed. The result also showed that the heterogeneity, alternatively homogeneity, of the student groups affects the education. The result also showed that the categorisation is affected by the heterogeneity or homogeneity, of the student groups. / Att kategorisera människor betraktas i den samtida kontexten som en av människans grundläggande kognitiva processer. Kategoriseringen och därmed indelning av människor är en ständigt pågående process. Syftet med denna studie är där av att undersöka i vilken utsträckning kategoriseringen av ett "vi" tillika ett "dom" är påtaglig i dagens religionsundervisning. Studien ämnar att undersöka religionslärares erfarenheter och åsikter kring en eventuell kategorisering av "vi och dom " i religionsundervisningen. Studien syftar till att undersöka hur en eventuell kategorisering av "vi och dom" yttrar sig och hur kategoriseringen värderas. Tillika syftar studien till att undersöka hur religionsundervisningen påverkas om elevgruppen är heterogen alternativt homogen, samt vilken betydelse heterogena-/homogena elevgrupper spelar för den eventuella kategoriseringen. Empirin erhölls genom semistrukturerade intervjuer med erfarna religionslärare. Studiens resultat visade att kategoriseringen "vi och dom" existerar i religionsundervisningen. Resultatet visade inte på någon entydig uppfattning rörande hur kategoriseringen yttrar sig tillika värderas. Vidare visade resultatet att religionsundervisningen påverkas utifrån elevgruppens heterogenitet alternativt homogenitet. Resultatet visade tillika att kategoriseringen "vi och dom" yttrar sig på olika vis, beroende på om religionsundervisningen bedrivs i en heterogen- eller en homogen elevgrupp.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

HOPE VI, instituted in 1993 and subsequent related policies, resulted in the demolition of traditional public housing and the relocation of former residents. For former residents living on low incomes, combining housing subsidy and other social services is important to survival. One crucial type of social services support provides food supplements. Research indicates that among low-income families, many do not receive necessary food social services. For example, among eligibles, food stamp utilization is at 50 to 60%, and for Special Supplemental Nutrition Program for Women Infants and Children (WIC) rates vary from 38 to 73%. Research indicates that 35% of food insecure older adults are ineligible for the Elder Nutrition Program, and approximately 60% of eligibles are wait-listed upon application. Social services utilization patterns among eligibles are affected by neighborhood contexts. Relocation due to public housing transformation policies has been shown to change neighborhood context. This in turn has affected former public housing resident’s cultural capital and social capital. But how this affects food social services utilization has not been studied. I use Klinenberg’s (2002) activist client thesis as a framework to investigate the effect of cultural capital and social capital for housing subsidy recipients (relocated public housing residents) in Atlanta on their utilization of food social services using secondary longitudinal data from the Georgia State University Urban Health Initiative analyzed using ordered logistic regression. Most specifically, my research investigated how varying neighborhood contexts affect food social services utilization for former public housing residents in Atlanta. This research informs public policy on the provision of housing subsidy and the provision of food social services.

In 1997 the Richmond Redevelopment and Housing Authority received a HOPE VI grant from the U.S. Department of Housing and Urban Development in the amount of $26.9 million to revitalize the Blackwell scattered site public housing community. The mixed income approach of HOPE VI calls for a reduction of public housing units, thus requiring all households to relocate to other neighborhoods. This research analyzed socioeconomic data to examine the relocation of households, assess whether they moved to better neighborhoods, and compare them to other poor households. Over half of all households moved to other distressed neighborhoods in the Northside, East End, and Southside sections of Richmond. While voucher households moved to better neighborhoods, public housing households appeared to move to neighborhoods of similar and worse quality than Blackwell. Overall, relocated households moved to less stable communities than other poor households. Research suggests that a regional approach is needed to open suburban housing options to low-income families in order to effectively deconcentrate poverty.

De flyktingströmmar som drabbat både Europa och Sverige på senare år har gjort att integrationsarbetet i kommunerna kommit att bli en viktig del i deras arbete att inkludera nya individer i samhället. Syftet med vår uppsats är att lyfta fram hur integrationen av nyanlända ser ut i olika kommuner i Sverige och målet är att belysa de svårigheter och ambitionen är att påvisa vikten av att inkluderas i samhället på ett tidigt stadie. Studien är kvalitativ och med hjälp av intervjuer tolkades sedan materialet. Vi bearbetade materialet utifrån teorierna Elias & Scotsons etablerade och outsiders och Bourdieus sociala kapital samt Ahrne & Papakostas om organisationer där studien visar att det finns svårigheter med fördomar och rykten, socialt kapital och organisationers samt politikens betydelse för inkludering i samhället. Materialet visade både på ett positivt och negativt sätt om hur kommunerna arbetar med integration och inkludering av nyanlända. Vår studie tyder på att kommunerna arbetar intensivt med integrationsarbetet men de befinner sig på olika nivåer. Sammantaget visar det sig att ett mindre samarbete förekommer mellan organisationerna Migrationsverket och kommunen vilket kan resultera till en sämre integration av de nyanlända. / The refugees suffered both in Europe and Sweden in recent years and has made integration work in the municipalities to become an important part of their work to include new individuals in society. The purpose of this essay is to highlight how the integration of immigrants looks in different municipalities in Sweden and the aims is to demonstrate the importance of being included in the community at an early stage. The study is qualitative and with the help of our interviews we interpreted the material. We processed the material based on the theories Elias & Scotsons established and outsiders and Bourdieu's social capital and Ahrne & Papakostas about organizations and the study shows that there are difficulties with prejudice and rumors, social capital and organizations and policy essential for inclusion in society. The material showed both positive and negative ways on how municipalities work with integration and inclusion of immigrants. Our study suggests that municipalities are working intensively on integration, but they are at different levels over all. It turns out that there are a minor co-operation between the organization Immigration Service and the municipality, which may result in a lower integration of the immigrants.

Den här studien har undersökt hur framställningar görs av individer med utländsk härkomst, etniska grupper och icke-västerländska kulturer görs i svenska läroböcker för samhällskunskap. Det undersöks också om det görs framställningar av ett ”vi” och ”de andra” i läroböckerna. I resultatet får läsaren följa fem olika teman som kommit fram genom läsning av sex läroböcker. Resultatet har analyserats med en postkolonial teori för att göra analyser om framställningarna som görs i läroböckerna kan tolkas som diskriminerande. I studien har också en läromedels teori använts för att analysera om framställningarna som görs i läroböckerna har en funktion av att förmedla diskriminerande diskurser. Vad resultatet av studien visar är att funktionen med läroböckerna inte är att göra diskriminerande framställningar, dock gör framställningarna att det görs ett ”vi” och ”de andra”. Av resultatet framkommer också att det förekommer tveksamma framställningar i läroböckernas innehåll.

Albeit of high technological import, epitaxial self-assembly of CdSe/ZnSe QDs is non-trivial and still not clearly understood. The origin and attributes of these QDs are significantly different from those of their III-V and group-IV counterparts. For III-V and group-IV heterosystems, QD-formation is assigned to the Stranski Krastanow (SK) transition, wherein elastic relaxation of misfit strain leads to the formation of coherent three-dimensional (3D) islands, from a supercritically strained two-dimensional (2D) epilayer. Unfortunately, this phenomenon is inconspicuous for the CdSe/ZnSe heterosystem. Well-defined 3D islands are not readily formed in conventional molecular beam epitaxial (MBE) growth of CdSe on ZnSe. Consequently, several alternative approaches have been adopted to induce/enhance formation of QDs. This thesis systematically investigates three such alternative approaches, along with conventional MBE, with emphasis on the formation-mechanism of QDs, and optimization of their morphological and optical attributes. It is shown here that no distinct 3D islands are formed in MBE growth of CdSe on ZnSe. The surface of the CdSe layer represents a rough 2D layer, characterized by a dense array of shallow (<1nm) abutting mounds. In capped samples, the CdSe deposit forms an inhomogeneous CdZnSe quantum well (QW)-like structure. This ternary QW consists of local Cd-rich inclusions, which confine excitons three-dimensionally, and act as QDs. The density of such QDs is very high (~ 1012 cm-2). The QDs defined by the composition inhomogeneities of the CdZnSe QW presumably originate from the shallow mounds of the uncapped CdSe surface. By a technique wherein a CdSe layer is grown at a low temperature (TG = 230 °C) and subsequently annealed at a significantly higher temperature (TA =310 °C), tiny but distinct 3D islands are formed. In this work, the mechanism underlying the formation of these islands is reported. While the CdSe deposit forms a quasi-two-dimensional (quasi-2D) layer at TG = 230 °C, subsequent annealing at TA = 310 °C results in a thermally activated “up-climb” of adatoms onto two-dimensional clusters (or precursors) and concomitant nucleation of 3D islands. The areal density of QDs, achieved by this technique, is at least a decade lower than that typical for conventional MBE growth. It is demonstrated that further reduction is possible by delaying the temperature ramp-up to TA. In the second technique, formation of distinct islands is demonstrated by deposition of amorphous selenium (a-Se) onto a 2D CdSe epilayer at room temperature and its subsequent desorption at a higher temperature (TD = 230 °C). Albeit the self-assembled islands are large, they are severely truncated during subsequent capping with ZnSe, presumably due to segregation of Cd and Zn-alloying of the islands. The segregation phenomenon is analyzed in this work and correlated to the optical properties of the QDs. Additionally, very distinct vertical correlation of QDs in QD-superlattices, wherein the first QD-layer is grown by this technique and the subsequent ones by migration enhanced epitaxy (MEE), is reported. The process steps of the third variant technique, developed in course of this work, are very similar to those of the previous one-the only alteration being the substitution of selenium with tellurium as the cap-forming-material. This leads not only to large alteration of the morphological and optical attributes of the QDs, but also to formation of unique self-assembled island-patterns. Oriented dashes, straight and buckled chains of islands, and aligned island-pairs are formed, depending on the thickness of the Te-cap layer. The islands are partially alloyed with Te and emit luminescence at very low energies (down to 1.7 eV at room temperature). The Te cap layer undergoes (poly)crystallization during temperature ramp-up (from room temperature to TD) for desorption. Here, it is shown that the self-assembled patterns of the island-ensembles are determined by the pattern of the grain boundaries of the polycrystalline Te layer. Based on an understanding of the mechanism of pattern formation, a simple and “clean” method for controlled positioning of individual QDs and QD-based extended nanostructures, is proposed in this work. The studies carried out in the framework of this thesis provide not only a deeper insight into the microscopic processes governing the heteroepitaxial self-assembly of CdSe/ZnSe(001) QDs, but also concrete approaches to achieve, optimize, and control several technologically-important features of QD-ensembles. Reduction and control of QD-areal-density, pronounced vertical correlation of distinctly-defined QDs in QD-superlattices, and self-assembly of QD-based extended structures, as demonstrated in this work, might turn out to be beneficial for envisioned applications in information-, and communication-technologies. / Trotz ihrer großen technologischen Bedeutung ist die epitaktische Selbstorganisation von CdSe/ZnSe QDs noch immer nicht vollständig verstanden. Die Ursachen und Merkmale dieser QDs unterscheiden sich deutlich von ihren III-V- und IV-IV-Gegenstücken. Für III-V- und IV-IV-Heterosysteme wird die QD-Formation dem Stranski-Krastanow-(SK)-Übergang zugeordnet, bei dem, ausgehend von einer hochverspannten zweidimensionalen (2D) Epitaxieschicht, die elastische Relaxation von durch Gitterfehlanpassung hervorgerufener Verspannung zur Formation von dreidimensionalen (3D) Inseln führt. Im Falle des CdSe/ZnSe-Heterosystems ist es unklar, ob das SK-Modell die Formation von QDs zutreffend beschreibt. Beim Wachstum durch Molekularstrahlepitaxie (engl.: molecular beam epitaxy, MBE) von CdSe auf ZnSe kommt es nicht zur Bildung von 3D-Inseln, wie es für die meisten III-V- und IV-IV-Heterosysteme charakteristisch ist. Infolgedessen wurden mehrere alternative Herangehensweisen eingesetzt, um die Formation der QDs anzuregen bzw. zu verbessern. Diese Doktorarbeit beschreibt die systematische Untersuchung dreier solcher alternativer Ansätze im Zusammenspiel mit konventioneller MBE. Der Schwerpunkt liegt auf dem Formationsmechanismus der QDs und Optimierung ihrer morphologischen und optischen Eigenschaften. Beim MBE-Wachstum von CdSe auf ZnSe findet keine Bildung ausgeprägter, dreidimensionaler Inseln statt. Die Oberfläche der CdSe-Schicht stellt eine rauhe 2D-Schicht dar, gekennzeichnet durch eine dichte Anordung flacher, aneinander angrenzender Hügel. In bedeckten Proben bildet die CdSe-Ablagerung eine inhomogene CdZnSe-quantentrog-ähnliche (engl.: quantum well, QW) Struktur . Dieser ternäre QW enthält lokale Cd-reiche Einschlüsse, die die Bewegung von Exzitonen in drei Dimensionen einschränken und als QDs fungieren. Die Dichte solcher QDs ist sehr hoch (~ 1012 cm-2). Diese durch die Inhomogenität des CdZnSe-QW definierten QDs haben ihren Ursprung in den flachen Hügeln der unbedeckten CdSe-Oberfläche. Mit einer Methode, bei der man eine CdSe-Schicht bei niedriger Temperatur (TG = 230 °C) wachsen lässt und anschießend bei höherer Temperatur (TA = 310 °C) tempert, kommt es zur Bildung winziger, aber ausgeprägter, 3D-Inseln. In dieser Arbeit wird der Mechanismus, der der Bildung dieser Inseln zugrunde liegt, beschrieben. Während die CdSe-Ablagerung eine quasi-zweidimensionale (quasi-2D) Schicht bei TG = 230 °C bildet, führt das darauf folgende Tempern bei TA = 310 °C zu einem thermisch aktivierten „up-climb“ von Adatomen auf zweidimensionale Cluster (oder Vorgänger, engl.: precursor), bei gleichzeitiger Nukleation von 3D-Inseln. Die Flächendichte von QDs, die mit dieser Methode erreicht werden kann, ist mindestens eine Größenordung geringer als es für konventionelles MBE-Wachstum typisch ist. Eine weitere Verringerung ist möglich, indem der Temperaturanstieg auf TA verzögert wird. In einer zweiten Variante wird die Bildung großer und ausgeprägter Inseln durch Aufbringen einer amorphen Selenschicht (&#945;-Se) auf eine 2D-CdSe-Epischicht bei Raumtemperatur und anschließender Desorption bei höherer Temperatur (TD = 230 °C) demonstriert. Obwohl die selbstorganisierten Inseln groß sind, werden sie durch nachträgliches Bedecken mit ZnSe stark abgeflacht, was durch Segregation von Cd und Legieren der Inseln mit Zn hervorgerufen wird. Das Segregationsphänomen sowie sein Zusammenhang mit den optischen Eigenschaften der QDs wird in dieser Arbeit untersucht. Weiterhin wird vertikale Korrelation von QDs in QD-Übergittern beschrieben, in welchen die erste QD-Schicht mit dieser Methode wachsen gelassen wurde. Darauf folgende Schichten werden duch „migration enhanced epitaxy“ (MEE) aufgebracht. Die Prozessschritte der dritten Variante sind denen der eben beschriebenen sehr ähnlich. Die einzige Abwandlung besteht in der Substitution von Selen mit Tellur als bedeckendes Material. Diese Variation führt nicht nur zu beträchtlicher Veränderung der morphologischen und optischen Eigenschaften der QDs, sondern auch zur Bildung einzigartiger Muster von selbstorganisierten Inseln. Abhängig von der Dicke der Tellurbedeckung kommt es zur Bildung orientierter „dashes“, gerader und gebogener Ketten von Inseln und ausgerichteter Inselpaare. Die Inseln sind teilwese mit Tellur legiert und strahlen Lumineszenz in einem sehr niedrigen Energiebereich ab (bis hinunter zu 1,7 eV bei Raumtemperatur). Im Gegensatz zur &#945;-Se-Bedeckung kommt es in der Te-Schicht während der Temperaturerhöhung (von Raumtemperatur zu TD) zur Polykristallisierung. Es wird gezeigt, dass die selbstorganisierten Muster der Inseln durch die Verteilung der Korngrenzen der polykristallinen Te-Schicht bestimmt werden. Basierend auf dem Verständnis des Mechanismus der Musterbildung wird hier eine einfache und „saubere“ Methode für die kontrollierte Positionierung individueller QDs und QD-basierter, ausgedehnter Nanostrukturen vorgeschlagen.