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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.
9751

Localized Scour Around Structures Under Transient Flow Conditions

Mehrzad, Razieh 08 April 2021 (has links)
In recent years, extreme natural phenomena such as tsunamis or storm surges have affected populated coastal regions around many coastal regions around the world and with particular impact for countries bordering the Indian, Pacific and Atlantic Oceans. Such extreme events caused significant loss of life and extensive damage to coastal communities. Field surveys conducted from the 1992 Nicaragua Tsunami to the relatively recent 2011 Tohoku Japan Tsunami have recorded lots of evidence of scour around damaged buildings and bridge foundations. It is documented that scouring is one of the significant causes of coastal structural damages. In post-tsunami forensic engineering surveys of India and Thailand following the 2004 Great Sumatra Andaman tsunami, researchers were able to document local scour occurrences not only at buildings located close to shore, but also hundreds of meters inland. (Yeh and Li 2008, Nistor et al. 2012 and Li et al. 2012). The most damaging 2011 Tohoku Tsunami provided an outstanding opportunity to document (Chock et al., 2013) a variety of failure modes of infrastructure including coastal and onshore structures. This research program encompassed a comprehensive experimental and numerical investigation and analysis for the scour mechanism and vortex structures due to inland-propagating tsunami-like bores on a dry or flooded horizontal mobile bed, representing comprehensive tsunami-induced scour study. The primary objective of this thesis was to investigate the influence of different parameters on the bore propagation characteristics and how they affect the scouring process. To achieve this objective, a series of hydraulic bores consistent with the dam-break wave theory were generated. Extensive experiments were conducted to perform parametric analysis on both bore propagation and local scour (e.g., influence of structure size, bore height, bed initial condition, bed material size and second tsunami wave). The secondary objective involved development of a numerical model to simulate local scour and predict the threedimensional (3D) flow pattern around a structure induced by tsunami–like bore. The open source TelemacMascaret numerical model was used to determine flow characteristics adjacent to the structure and the associated bed evolution and resulting local scour. The 3D hydrodynamic Telemac model couples internally with the sediment transport module SISYPHE to solve bed evolution equations. The efficiency of the numerical model was assessed and compared quantitatively and qualitatively with the results of the physical experiments. The studies show a longer duration of a turbulent bore induced more scour depth compared to that generated by solitary or long waves. The short duration and very turbulent nature of the bores induced rapid scour. It was shown that the location of maximum scour depth and sediment deposition pattern downstream of the structure are well captured by the numerical model, however; magnitude of scour depth is underpredicted compared to that of the experimental work. It was found that the ASCE (2016) prescriptions on estimating scour underpredicts the maximum scour depth and thus, the use of the ASCE (2016) provisions, may lead to undesirable underestimations of maximum scour depth. The results of this study have contributed to the American Society of Civil Engineers (ASCE) 7 Chapter 6, which is the first standard written in mandatory language in the world, which specifically prescribes guidance for the design of tsunami resilient critical infrastructure using also a probabilistic framework for the determination of the extent of coastal inundation.
9752

Empowering Arab Women through Media Development : A case study

Zayati, Nabila January 2021 (has links)
The media have power: they create frames of conceptions, influence attitudes and behaviour, and monitor the conduct of government officials. For women, the media can suggest ways and means to defend civil rights and gain access to society’s resources and opportunities. Indeed, Media Development offers three levels of interventions to promote gender equality. (1) Increasing female number and roles in the media labour markets. (2) Promoting the production and circulation of content that challenge stereotypical portrayals of women and men. (3) Addressing the entire society to raise awareness and commitment for equal contributions in sustainable development. However, even though media development efforts have been popular during the last two decades in the global South (UNESCO), the Arab region is ranked the lowest in the world for achieving gender equality (CRS, 2020).  This project aims to investigate the role of media development to achieve gender equality and women’s empowerment through a case study of two gender strategies driven by two main models of media development (Scott, 2014; Manyozo, 2012), in the Arab region. One is led by external interventions, the other is supported by domestic authorities and local governments. The time period of the research is limited to the last decade, which has seen radical changes in terms of women’s participation in the public sphere.  The findings are based on 10 in-depth interviews with media professionals directly involved in these strategies across different Arab countries, from Algeria, Iraq, and Palestine, to the United Arab Emirates and Yemen. Despite the differences between the strategies in terms of political affiliations and territories of interest, the interviews show that gender (in)equality in the media is not a phenomenon isolated from people’s daily lives. Correspondingly, women’s empowerment is the result of different power struggles in society in which media development could potentially make a real difference if based on gendered pluralistic participatory approaches, which include the internal and external environments of media organisations, as well as all actors of society’s systems and structures.
9753

An evaluation of community engagement strategies to improve trust and vaccine confidence. : A review of the Primary Healthcare for Travellers Projects in Ireland.

Buggle, Michael January 2021 (has links)
Public trust in vaccines has shifted over time and at different rates based on vaccine and contextual factors. Despite the known benefit for public health, recent studies across many countries have indicated a perceived ‘hesitancy’ toward vaccines, namely those for the prevention of COVID-19. The decision to vaccinate can be complex, involving psychological and socio-cultural factors that can cause vaccination barriers. Trust or confidence, both in a vaccine and the people behind the vaccine, has been identified as a core element impacting people’s willingness to vaccinate, particularly if a vaccine is new.  Community engagement (CE) methodologies have been recommended in previous reports as strategies to improve trust among populations in health services such as vaccinations. The following study evaluates the applicability of CE strategies, such as the community health worker model, in addressing factors of vaccine hesitancy (VH) by leveraging trusted relationships. The study looks at the approach of a model used to address health inequalities among the Traveller Population in Ireland as a case study of community engagement methodologies within an ethnic minority population.  Using the Primary Healthcare for Travellers Projects (PHCTP) as a case, this study evaluates how trust as a by-product of community engagement can play a role in improving vaccine confidence. The study examines elements of CE strategies that can be applied to the Irish Traveller context to address any potential COVID-19 vaccine confidence issues. Interviews with several stakeholders uncover perspectives on the PHTCP model and CE strategies generally and their impact on vaccine decision-making. These stakeholders include primary health workers of the PHCTP teams in Dublin, and ‘expert’ stakeholders consisting of public health specialists with experience in the field of VH. The study shows that the PHCTPs have built up significant trust levels with the Traveller community and may be effective in improving vaccine confidence in a COVID-19 vaccine in the future.
9754

Linearization Based Model Predictive Control of a Diesel Engine with Exhaust Gas Recirculation and Variable-Geometry Turbocharger

Gustafsson, Jonatan January 2021 (has links)
Engine control systems aim to ensure satisfactory output performance whilst adhering to requirements on emissions, drivability and fuel efficiency. Model predictive control (MPC) has shown promising results when applied to multivariable and nonlinear systems with operational constraints, such as diesel engines. This report studies the torque generation from a mean-value heavy duty diesel engine with exhaust gas recirculation and variable-geometry turbocharger using state feedback linearization based MPC (LMPC). This is accomplished by first introducing a fuel optimal reference generator that converts demands on torque and engine speed to references on states and control signals for the MPC controller to follow. Three different MPC controllers are considered: a single linearization point LMPC controller and two different successive LMPC (SLMPC) controllers, where the controllers are implemented using the optimization tool CasADi. The MPC controllers are evaluated with the World Harmonized Transient Cycle and the results show promising torque tracking using a SLMPC controller with linearization about reference values.
9755

An application that creates loops out of audio recordings / En applikation som skapar slingor av ljudinspelningar

Yu, Jinwoo January 2021 (has links)
En applikation för mobila enheter skapades för en målgrupp som bestod av barn i åldern 6–10 år. Applikationen ingick som en del av en större applikation som hette Clappen, som bestod av flera mindre applikationer. Clappen utvecklades av forskningsinstitutet RISE Interactive på uppdrag av Östergötlands sjukhusclowner, som arbetar med att besöka barn på sjukhus i Östergötland. Med lek, gestaltning och musik ger Östergötlands sjukhusclowner barnen en paus i vardagen. Clappens syfte var att förlänga närvaron av clownerna på sjukhuset. Applikationen som beskrivs i detta examensarbete hade som syfte att tillåta barn att skapa musik utan att behöva ha taktkänsla eller förmågan att sjunga i korrekt tonhöjd. Funktionalitet för inspelning implementerades i applikationen och varje inspelning korrigerades med följande ljudmanipulationer: filtrering, analys med Fast Fourier Transform, sample slicing, tonhöjdsbyte med en fasvokoder, fade och kvantisering. Det grafiska gränssnittet utvecklades med följande metoder: fältstudie, effektkarta, prototyper, designmetoden “Crazy eights“ och användartest. Resultatet blev ett grafiskt gränssnitt som tilltalade målgruppen och som enligt användartestet var snabbt och enkelt för målgruppen att lära sig. / <p>Examensarbetet är utfört vid Institutionen för teknik och naturvetenskap (ITN) vid Tekniska högskolan, Linköpings universitet</p>
9756

Container closure integritytesting with High Voltage LeakDetection

Bahnam, Nadeen January 2021 (has links)
There are various methods that can be used for Container Closure Integrity Testing (CCIT).Each method has its pros and cons.The choice of the CCIT-method depends on various factors such as the material of the primary packaging and product properties. High Voltage Leak Detection(HVLD) is an effective method. The sensitivity of the method is quite high but its is unclear whether it can detect all the hole sizes that may entails a risk for microbial contamination. The  theoretical calculations and practical experiments shows that HVLD can detect holes in different positions and it can detect holes that are a few micrometers. If HVLD detect hole size that are 5 micrometers, it means that alla sizes that can make risk for microbial contamination for productsmanufacturedonAstraZeneca PET BFS can be detected with HVLD.
9757

Mutual Trust in Regional and Interregional Cooperation on Counterterrorism: An Analysis of the EU and ASEAN Approaches.

Cocq, Celine 07 April 2021 (has links) (PDF)
As transnational crime has no regard to borders, competent authorities need to overcome the barriers the barriers of national jurisdictions and cooperate together. The UN and regional organisations, including the EU and ASEAN, have required States to criminalise transnational crime, including terrorism, and to implement effective measures to prevent, investigate, detect, prosecute and punish these offences. They have also required States to cooperate; cooperation being one of the key measures to ensure the effectiveness of States’ action.The regional level is considered to be the most effective to harmonise legislation as well as to adopt and implement mechanisms of cooperation for security purposes. However, the nature and level of cooperation vary a lot depending on the regional framework considered. In the EU, this cooperation has been legally framed and institutionalised as well as associated with harmonisation of Member States’ legislation. By contrast, cooperation remains much more informal in ASEAN and is not associated with harmonization of legislation. Despite its low level of integration, ASEAN plays an increasing role in the region by leading efforts to create a regional legal architecture. ASEAN is the most successful regional grouping in the “developing world” and has a particular approach vis-à-vis terrorism. Both regions have therefore a legitimate ground and purpose in learning from each other (comparative regionalism) and in working together (interregionalism) in order to ensure – up to the capacities of each regions – the best response to terrorism.The differences between the two regions are due to various factors, among which the unalike degree of trust between their respective Member States and their capacity to cooperate. Despite its absence in the constitutional treaties, “mutual trust” is a concept constantly used in the AFSJ, especially when police and judicial cooperation is at stake. Whereas its precise status, nature and consequences is still debated, mutual trust seems to have reached an institutional level and to have been transformed into legal expectations in the EU. By contrast, although trust is repeated in ASEAN declarations and objectives, it is less visible in practice between ASEAN Member States. Mutual trust is a fundamental yardstick in developing cooperation mechanisms. The highest the confidence in each other’s systems is, the more efficient the cooperation. Mutual trust serves to build bridges between national jurisdictions. In the EU, such mutual trust is based on common values and norms and implies the development of common minimum standards in the field including human rights norms. It rests of course also on other factors such as mutual understanding of the threat and each other’s particular legislation.The compared regional analysis will highlight notable discrepancies in each region’s approach. The EU has gone through a tremendous institutional evolution by communitarising the AFSJ. The EU has adopted norms to facilitate cooperation based on common standards and mutual trust. With the numerous types of cooperation mechanisms, the EU adopted a two-fold objective, namely facilitating the cross-border cooperation and harmonising the HR standards. By contrast, ASEAN is still governed by the so-called ‘ASEAN Way’ based on consultation and consensus rather than on bargaining and give-and-take leading to deals enforceable in a court of law; on non-institutionalised processes; and on practice-based rules. These differences involve a clear lack of trust between Member States. This method is slowly and partially shifting towards a more institutional and rules-based approach. This comparative analysis will allow to conclude on the convergences and differences in the conditions and level of trust in each of the two regions in the field of terrorism and on their impact on the level of cooperation.Based on this comparison, interregional challenges and prospects will be focused on. The EU has adopted a comprehensive approach combining human rights and security measures. Preserving such a balance when interacting with external actors is a serious challenge, especially when States tend to privilege security measures. The EU must adapt its objectives, priorities and means to the particularities of ASEAN while respecting its own standards. In this regard, mutual trust is an important factor in developing interregional collaboration. Since 1972, the EU developed economic ties with different ASEAN Member States and with the ASEAN Secretariat itself. Both regions have increasingly engaged in an interregional dialogue on different issues of interest, including terrorism. Here again, the criteria/conditions and the level of mutual trust developed between the two regions will be examined. / Doctorat en Sciences juridiques / info:eu-repo/semantics/nonPublished
9758

Anthropology and literature: Humanistic themes in the ethnographic fiction of Hilda Kuper and Edith Turner

Shaik, Zuleika Bibi January 2021 (has links)
Magister Artium - MA / This mini-thesis makes an argument for the significance of a female-dominated hidden tradition of experimental ethnographic writing in British social anthropology. It argues that the women anthropologists who experimented with creative forms of ethnography were doubly marginalised: first as women in an androcentric male canon in British social anthropology and American cultural anthropology, and second as creative writers whose work has been consistently undervalued in sombre scholarly circles. The study proposes that Hilda Beemer Kuper (1911-1995) and Edith Turner (1921-2016) should be regarded as significant in a still unexcavated literary tradition or subgenre with Anglo-American anthropology. It showcases the narrative craft of Kuper through a detailed textual analysis of her two most accomplished experimental ethnographies A Witch in My Heart (written in 1954, performed in 1955, and published in siSwati in 1962 and English in London in 1970) and A Bite of Hunger (written in 1958 and published in America in 1965). I highlight Kuper‟s multiple literary techniques in evoking of the fraught position of young Swazi co-wives, modern women and women accused of witchcraft in a patriarchal culture with particular attention to her gifts in creating dramatic plots, complex characters and dialogue rich in vernacular metaphor and proverbs. It then celebrates the even more experimental creative writing of Edith Turner. While Turner has sometimes been acknowledged for her hidden contributions to the co-production of her deeply loved and more famous husband Victor, she has not been given her due as an experimental ethnographer, also placing the experiences of African women centre-stage. In what she overtly advertised as “female literary style”, Turner‟s belatedly published 1987 novel The Spirit and the Drum. A Memoir of Africa is analysed with meticulous attention to the literary techniques by which she seeks to explore an anthropology of experience and empathy. These accomplished but under-acknowledged women creative writers sought to explore what they both explicitly conceived of as gestures of humanist cross-cultural engagement.
9759

Visual Storytelling in the Cape Flats Gang Biopics Noem My Skollie (2016) and Ellen: Die Storie van Ellen Pakkies (2018)

Arendse, Lesle Anne January 2021 (has links)
Magister Artium - MA / This M.A. mini-thesis seeks to open up the post-apartheid South African biopic as a topic for serious historical scrutiny. While book-length written biographies published in the post-apartheid (and apartheid periods) are the subjects of a now quite extensive historiographical literature, biography on film – including in the form of filmic dramas – has been hitherto entirely ignored. Social history or marginalised lives and not political lives of struggle against apartheid have been the predominant subgenre within this emerging field: with sixteen biopics having been produced in the 2010s. But the field is dominated by white men. This thesis showcases the story-telling gifts of one young coloured film-maker through a meticulously detailed analysis of “visual story-telling” and “visual language” used in his two award-winning gang biopics, Noem My Skollie (2016) and Ellen. Die Stories van Ellen Pakkies (2018). Read in the context of the extended processes of production of these two films in which the central protagonists played a shaping background role, the thesis explores and compares the linear chronological, four-chapter, narrative structure of Noem My Skollie with the architecture of “the parallel narrative” used in the deeply disturbing Ellen. Die Storie van Ellen Pakkies (2018) The thesis is a celebration of the film-making talent of Daryne Joshua.
9760

Concordance and Discordance Between Non-High-Density Lipoprotein Cholesterol and Apolipoprotein B as Cardiovascular Disease Risk Markers over the Full Spectrum of Hypertriglyceridemia: A Cross-sectional Analysis of Lipid Clinic Data

Sun, Cathy J. 09 April 2021 (has links)
Cardiovascular disease is a leading cause of morbidity and mortality worldwide. Lipid biomarkers are frequently used for prediction of cardiovascular disease risk. Triglycerides are routinely checked in blood work, and triglycerides are a key component of lipoproteins that contribute to atherogenic plaques, which cause cardiovascular disease. High triglycerides are a common condition in the general population. The relative effect of high triglycerides on the lipid biomarkers (non-high-density lipoprotein cholesterol, and apolipoprotein B) for cardiovascular disease risk prediction is the focus of this thesis. Using cross-sectional lipid profile data from a large Lipid Clinic, we compared the correlation and concordance between non-high-density lipoprotein cholesterol and apolipoprotein B as cardiovascular disease risk markers among patients with mild, moderate, and severe hypertriglyceridemia. The findings showed that with higher triglycerides, there is lower agreement between the two biomarkers, which raises caution that they are not interchangeable, and further research is needed.

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