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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
551

Ett kulturarv för alla? En studie av gränserna mellan ”Vi” och ”De Andra” i litteraturhistoriska läroböcker för gymnasiets svenskämne

Svensson, Sara January 2009 (has links)
Föreliggande uppsats syftar till att problematisera begreppet västerländskt ”kulturarv” i svenskämnets A- och B-kurser avseende litteraturundervisningen. Undersökningen studerar tre läroböckers litterära urval under epokerna renässansen, upplysningen och romantiken (år 1500 – 1830) genom att kartlägga vilka gränser mellan ”Vi” och ”De Andra” som används och aktiveras, samt hur dessa gränser legitimeras. De läroböcker som undersöks är Natur & Kulturs BRUS #1/#2 (2006), Libers Litteraturen Lever (2005) samt Gleerups Möt Litteraturen (2008). Genom en kvalitativ och närläsande metod, med kvantitativa inslag, analyseras empirin utifrån en postkolonialt teoretisk utgångspunkt där begrepp som eurocentrism och dikotomier utifrån gränser mellan ”Vi” och ”De Andra” står i fokus. Undersökningen visar att trots att läroboksförfattarna delvis har olika ingångar till begreppet ”kulturarv” och västvärlden förmedlas en bild av att det är det västerländska som är den otvivelaktiga utgångspunkten. Läroböckerna legitimerar detta val delvis olika. Genomgående är att urvalet i varje lärobok stundtals faller tillbaka på eurocentristiska antaganden och stereotypa dikotomier mellan ”Vi” och ”De Andra”. Tre viktiga slutsatser betonas. Den första är att alla läroböcker använder ett västerländskt litterärt urval. Den andra slutsatsen är att läroböckerna lutar sig mot den västerländska litteraturen inte bara via explicita eller tysta legitimeringar utan också via aktiva gränsdragningar mellan ”Vi” och ”De Andra”. Slutligen poängteras att ”kulturarvet” tycks vara relevant igen mot bakgrund av det läroplanen definierar som ”internationaliseringen”.
552

Gör media skillnad på mördare och mördare? : En kvantitativ innehållsanalys av hur Expressen gestaltar Wilma- och Tova-fallet. / Is there a difference in how the media frames murderers? : A quantitative content analysis of how Expressen frames the Wilma and Tova case.

Synnelius, Ella, Thulin, David January 2024 (has links)
This study examines the difference in Expressen’s portrayal of two similar murder cases in Sweden with the key difference being the ethnicity of the perpetrators. The main purpose is to determine if the media is using a discriminatory rhetoric in their covering of crime and if they are upholding a “we and them” view of the world. Former research shows signs of othering in the media around discourse of crime and immigrants and discusses medias’ cementing of a post-colonial worldview. This study uses framing theory and othering theory as a theoretical framework and is conducted through a quantitative content analysis of the written articles, about the murder cases of Wilma Andersson and Tova Moberg, across the time period of them going missing, to the point where the murderer is sentenced. The results show no signs of othering or discrimination in the Expressen articles and both the perpetrators and victims are framed equally in almost every aspect. Furthermore there is no significant connection between the sources cited and the framing in those articles, which could indicate an awareness in Expressens news process and how they influence the public.
553

Adsorption of Cr(VI) by iron oxide functionalized polyethyleneimine (PEI) coated activated carbon-silica composites

Qhubu, Mpho Cynthia 14 December 2020 (has links)
M. Tech. (Department of Chemistry, Faculty of Applied and Computer Sciences), Vaal University of Technology. / Water scarcity due to limited resources and pollution of the little available water by organic and inorganic contaminants remains as one of the critical issues of the 21st century. Several treatment methods have been developed, with some being used successfully at industrial scale but many challenges including secondary sludge generation, high operation costs, high maintenance costs and high energy input were observed. In this study, the adsorption process was explored as an effective means for the removal of Cr(VI) ions from aqueous solution due to its economic feasibility and use of abundantly available adsorbents. Amongst the many available adsorbents, this work focused on exploring functionalized activated carbons (ACs) as adsorbents for Cr(VI) ions due to their favorable adsorption characteristics which involve large surface area, high porosity, and high radiant stability. The iron oxide functionalized polyethyleneimine activated carbon-silica composites were prepared through co-precipitation of Fe(II) and Fe(III) over Macadamia activated carbon to form the AC-Fe3O4 co-shell which was reacted with tetraethylorthosilicate (TEOS) and the polyethyleneimine (PEI). The different adsorbents prepared were labelled AC-Fe3O4, AC-Fe3O4-SiO2 and AC-Fe3O4-SiO2-PEI. The adsorbents were further characterized using elemental analysis (CHNS), thermo gravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET), transmission electron spectroscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). FTIR displayed successful attachment of Fe3O4 and SiO2 with bands at 404 and 786 cm-1 being assigned to the asymmetric vibration of Fe-O and Si-O-Si while the asymmetric stretch of Si-OH is observed at 1066 cm-1. XRD showed the presence of magnetite particles in the adsorbents confirmed by the JCPDS 00-019-0629. EDS revealed the presence of Fe, Si, and N atoms which can relate to successful incorporation of the desired functional groups. Each of these materials were evaluated for their Cr(VI) ion removal through batch adsorption experiments where one parameter at a time was varied while all others were fixed. The parameters investigated included the effect of pH, contact time, initials Cr(VI) concentration, adsorbent dosage concentration and temperature. The optimum conditions were obtained at pH 3, initial concentration 2.5 mg/L, contact time of 120 min for AC-Fe3O4-SiO2-PEI. The optimization of each parameter was done in order to determine the conditions in which the adsorbents work best in the uptake of Cr(VI). All the three studied adsorbents showed acceptable adsorption performance for the removal of Cr(VI) from aqueous solutions. Adsorption isotherms studied confirmed that the adsorption data in all the three adsorbents fitted well into the Langmuir isotherm, demonstrating a homogeneous monolayer coverage. Regarding the kinetic studies, the adsorption data were best described by the pseudo-second order rate model with R2 values of 0.974, 0.974 and 0.962 for AC-Fe3O4, AC-Fe3O4-SiO2 and AC-Fe3O4-SiO2-PEI, respectively. The adsorption capacity observed from the present study (6.62, 3.92 and 5.48 for AC-Fe3O4, AC-Fe3O4-SiO2 and AC-Fe3O4-SiO2-PEI, respectively) were satisfactory and suitable as compared to those reported in literature. Thermodynamics data of the adsorption processes revealed a feasible spontaneous endothermic adsorption process which also confirmed that the reaction process occurred through chemisorption.
554

” […] Är det rätt att tvinga svenska barn att gå i skolor med ghetto barnen? […]” : En kvalitativ studie om hur skolsegregation och skolval kan konstrueras på Flashback forum / “[…] Is it right to force Swedish children to go to school with the ghetto children? […]” - written by a Flashback member : A qualitative study on how school segregation and school selection can be constructed on Flashback forum

Duarte Bellucci, Helena, Yakoub, Rita January 2023 (has links)
Syftet med studien är att undersöka hur några röster på Flashback forum problematiserar mångkulturalitet i segregerade skolor i förhållande till skolval. Tidigare forskning visar att föräldrar med svensk bakgrund undviker mångkulturella och stigmatiserade bostadsområden, när det kommer till val av skola för deras barn. Detta till följd av den negativa uppfattning föräldrarna har om invandrarbarn. Studien genomfördes utifrån en kvalitativ forskningsstrategi med hjälp av målstyrt urval. Forskningsdeltagarna bestod av Flashbackmedlemmar som uttryckte sig kritiskt mot mångkulturella skolor och invandrarbarn. Studiens empiriska material hämtades från olika trådar på det digitala diskussionsforumet Flashback forum. För att tolka studiens resultat användes teorier om stigma och figurationen etablerade-outsiders. Resultatet presenteras genom kvalitativ innehållsanalys som tillvägagångssätt, där Flashback inläggen har analyserats utifrån ett manifest och latent förhållningssätt. Slutsatser som antagits är att Flashbackmedlemmar uttrycker en oro över att ha deras barn i en etnisk blandad skola med för många invandrarbarn. Detta med anledningen att de anser att invandrarbarn utgör ett hot mot de svenska barnens psykiska samt fysiska hälsa och skolgång, där främst barn från ett icke-europeiskt ursprung pekas ut som de farliga eller kriminella. / The purpose of the study was to investigate how some voices on Flashback forum problematise multiculturalism in segregated schools in relation to school selection. Previous research indicates that parents from Swedish background avoid multicultural and stigmatized residential areas, when it comes to school selection for their children. This being a result of the negative perception parents have of immigrant children. The study was conducted based on a qualitative research strategy with the help of a goal-oriented selection. The research participants consisted of Flashback members who were selected for being critical of multicultural schools and immigrant children. This study’s empirical material was taken from various thread on the digital discussion forum, Flashback forum.This study’s results were interpreted through the theories of stigma and the figuration of established-outsiders. The results are presented through qualitive content analysis, where the Flashback members posts have been analysed through a manifest and latent approach. The conclusions drawn were that the Flashback members have expressed concern about having their children in an ethnically mixed school with too many immigrant children. This is because they believe that immigrant children pose a threat to Swedish children's mental and physical health as well as their education. Where children of non-European origin are primarily singled out as dangerous or criminal.
555

Techno-economic Assessment of Carbon Capture from Low Concentration Streams

Joshi, Prithvi Kiran January 2023 (has links)
Investments in carbon capture from industrial emissions have been on the rise in recent years, having reached over $200 million in 2021 as compared to 2015’s $13 million. The Paris Agreement, signed by 196 parties globally in 2015, is purported to be the primary driver for this, with its ambitious goal of limiting global surface temperature rise to 1.5°C by the year 2100 as compared to the pre-industrial era. Achievement of a carbon-neutral future for industries has been sought by experts in more than a few ways, which include attempts directed towards re-designing current manufacturing processes to produce inherently low CO2 emissions. Although eventual elimination of carbon emissions forms the ultimate goal, complete avoidance of CO2 production does not seem probable for all industrial sectors. Emissions from industries in the medium to long term are thus foreseen to be composed between 0.5% and 7% of CO2 by moles (roughly between 1% and 10% by mass), depending on the level of dilution occurring during the various flue gas treatment procedures between their source and the capture unit. An assessment of the capabilities of two popular and one prospective carbon capture technologies in capturing CO2 from such emissions of the future has been made in this work to aid investors make informed decisions about a suitable technology. The monoethanolamine-based (MEA) absorption system, one of the most popular choices today, was found to be well capable of treating emissions composed of CO2 in proportions as low as 0.6% by mole (or ∼1% by mass) with capture rates well over 95%. Its thermal energy intensity ranged between 3.59 MJth/kgCO2 captured and 10.23 MJth/kgCO2 captured with an associated levelised cost of capture ranging between €20.36/tonneCO2 captured and €141.97/tonneCO2 captured going from the 10% concentrated to the 1% concentrated stream by mass. In comparison, the benfield system was found to effect much lower CO2 capture rates ranging between 35% and 88%, making it unsuitable for treatment of low CO2 concentrated streams. Even with such poor performance at high pressures of operation, its energy demand ranged between 3.9 MJth/kgCO2 captured and 11.07 MJth/kgCO2 captured with an associated levelised cost of capture between €174.28/tonneCO2 captured and €4209.06/tonneCO2 captured. The immobilised amine-based system, in what is considered to be a non-optimised configuration yet, was found to capture nearly 100% of the entering CO2 with energy consumption ranging between 3.71MJth/kgCO2 captured and 11.8 MJth/kgCO2 captured for extremely high, but improvable levelised costs of capture ranging between €674.31/tonneCO2 captured and €3488.42/tonneCO2 captured. Exhibiting comparable energy performance to the mature MEA-based absorption system’s even in its non-optimised configuration, the immobilised amine-based adsorption system was found to possess potential to be the carbon capture technology of the future for treatment of low CO2-concentrated effluent streams. / Investeringar i koldioxidavskiljning från industriella utsläpp har ökat de senaste åren och nått över 200 miljoner USD 2021 jämfört med 2015 års 13 miljoner USD. Parisavtalet, som undertecknades av 196 parter globalt 2015, påstås vara den främsta drivkraften för detta, med det ambitiösa målet att begränsa den globala yttemperaturökningen till 1,5°C till år 2100 jämfört med den förindustriella eran. Att uppnå en koldioxidneutral framtid för industrier har eftersträvats av experter på mer än ett fåtal sätt, vilket inkluderar försök inriktade på att omdesigna nuvarande tillverkningsprocesser för att producera låga CO2-utsläpp. Även om fullständig eliminering av koldioxidutsläpp utgör det ideala målet, är det inte troligt att CO2-produktion kan undvikas helt för att alla industrisektorer. Utsläppen från industrier på medellång till lång sikt förväntas därför utgöra mellan 0,5 % och 7 % av CO2 per mol (ungefär mellan 1 % och 10 % i massa), beroende på nivån av utspädning som inträffar under de olika rökgasbehandlingsprocedurerna mellan utsläppskällan och fångstenheten. I det här arbetet har två traditionella och en potentiellt blivande koldioxidavskiljningsteknik jämförts och en bedömning av deras förmåga att fånga in CO2 från framtida utsläpp har gjorts i syfte att hjälpa investerare att göra ett klokt val. Det monoetanolaminbaserade (MEA) absorptionssystemet, ett av de mest populära valen idag, visade sig vara väl kapabelt att behandla utsläpp med CO2-koncentrationer så låga som 0,6 molprocent (eller 1 massprocent) med fångsthastigheter långt över 95 %. Dess termiska energiintensitet varierade mellan 3,59 MJth/kgCO2 captured och 10,23 MJth/kgCO2 captured med en tillhörande utjämnad kostnad för fångst mellan €20,36/tonCO2 captured och €141,97/tonCO2 captured från 10 % koncentrerad till 1 % koncentrerad ström i massa. Som jämförelse visade sig benfield-systemet ge mycket lägre CO2-avskiljningshastigheter på mellan 35 % och 88 %, vilket gör metodenolämplig för behandling av gasströmmar med låg CO2-koncentration. Den dåliga prestandan uppvisades trots höga drifttryck och metoden medförde en energiintensitet mellan 3,9MJth/kgCO2 captured till 11,07MJth/kgCO2 captured samt en snittkostnad mellan €174/tonCO2 captured till €4209,06/tonCO2 captured. Det immobiliserade aminbaserade systemet anses vara en icke-optimerad konfiguration men visade sig trots det fånga upp nästan 100 % av inkommande CO2 med en energiförbrukning på mellan 3,71 MJth/kgCO2 captured och 11,8 MJth/kgCO2 captured. De extremt höga, men dock förbättringsbara, snittkostnaderna för infångningen sträcker sig mellan €674/tonCO2 captured och €3488,42/tonCO2 captured. Det immobiliserade aminbaserade adsorptionssystemet uppvisar jämförbar energiprestanda som det mogna MEA-baserade absorptionssystemet även i sin icke-optimerade konfiguration.
556

A Method for Evaluating Diversity and Segregation in HOPE VI Housing Neighborhoods – Focus on Cuyahoga and Franklin Counties, Ohio

Abayateye, Philemon 15 June 2023 (has links)
No description available.
557

Synthesis and Property Characterization of Novel Ternary Semiconductor Nanomaterials

Mao, Baodong 26 June 2012 (has links)
No description available.
558

John Lydgate: Monk-Poet of Bury St. Edmunds Abbey

Jordan, Timothy Russell 17 October 2012 (has links)
No description available.
559

Coordinating Efforts to Achieve Community Safety: A Case Study of Cincinnati, Ohio's HOPE VI Project

Duhaney, Patrick Andre' 13 July 2009 (has links)
No description available.
560

Crossing the Strait from Morocco to the United States: the transnational gendering of the Atlantic World before 1830

Robinson, Marsha R. 14 July 2006 (has links)
No description available.

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