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1
Davoudi, Masoume. "Aerosol Droplet Migration in Fibrous Media." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1509120181801687.
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Jiang, Xinyi. "Fujianese migration on the margin : a study of migration culture through history, media representation and ethnography." Thesis, Cardiff University, 2006. http://orca.cf.ac.uk/55587/.
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Fujianese migration is emblematic of the social impact of the migration-asylum nexus and has prominent significance in migration studies. Yet it remains a hidden social phenomenon and has occupied a marginal position in media and socio-cultural studies. This situation exemplifies the contradictions and complexities of globalisation embedded in, and interacting with, economic, political, historical, social and other factors. My study attempts to explore these factors through a socio-cultural theoretical approach that combines textual and empirical analysis. Chapter One conceptualises the migration-asylum nexus from the sociological perspectives of globalisation, risk and racism. Chapter Two reviews a history of British attitudes towards China and Chinese immigration. Chapter Three analyses the textual properties of the press coverage of the Dover incident in which 58 Fujianese migrants died while being smuggled into Britain. Chapter Four draws an ethnographic picture of the marginalised life experiences of some Fujianese in Britain. Chapter Five explores the migration culture in a sending community of Fujian. My study suggests that an overall negative and stereotypical pattern of representing Chinese in the British society is perceivable in the UK media's recent coverage of the Dover incident. Analysis of this coverage also indicates that the UK media's coverage of migration and asylum issues generally accords with an anti-asylum political discourse. This helps to explain the culture of marginality and secrecy that pervades Fujianese migration to some extent. This study brings together the British press's representation of the Fujianese as 'Others' with an ethnographic investigation of what those 'Others' actually think of themselves. It addresses the discrepancies between migrant-receiving and migrant-sending societies in their perceptions of migration, and draws upon elements of politics, history, society, culture and individual dynamics to provide a more comprehensive portrayal of migration culture.
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Gandek, Thomas P. (Thomas Paul) 1959. "Migration of phenolic antioxidants from polyolefins to aqueous media with application to indirect food additive migration." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14951.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1987.MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.
Vita.
Bibliography: p. 316-326.
by Thomas P. Gandek.
Ph.D.
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Adebesin, Brooklyn Sijuade. "Media, Migration and Integration : An analysis of the media practices of Nigerians in Stockholm Sweden." Thesis, Stockholms universitet, Institutionen för mediestudier, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-91012.
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This study deals with the issue of migrants and their use of media to facilitate integration and negotiate nostalgia, identity and other social factors that ensue during the analysis of six selected Nigerian migrants in Stockholm. By means of a two-step ethnographic approach the empirical material is obtained from documented media use logs and semi-structured interviews of six Nigerian informants in Stockholm. This study sets out to discover the social factors that influence or shape the media practices of Nigerian migrants; furthermore, to understand the concept of nostalgia, integration and more descriptive concept of media use from the perspective such as: the number of years the participants have lived in Sweden, gender and ethnicity. The results show the motivation behind the media use of participants with emphasis on how Nigerian migrants use media in terms of type of medium used and frequency of use. Additionally, results show how social factors such as: ethnicity, gender, education, work and the number of years lived in Sweden play a role in influencing the media practices of the selected Nigerian migrants in Stockholm while likewise exhibiting a difference in the media practices of participants who have lived in Sweden for the same number of years. In conclusion, results display how the in number of years lived in Sweden in addition to other individual factors played a role in the media use of the participants. The results also show how the participants use media to negotiate nostalgia and ethnic identities.
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Kampel, Guido. "Mathematical Modeling of Fines Migration snd Clogging in Porous Media." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19764.
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Mathematical Modeling of Fines Migration and Clogging in Porous Media
Guido Kampel
87 Pages
Directed by Dr. Guillermo H. Goldsztein
A porous medium is a material that contains regions filled with fluid embedded in a solid matrix. These fluid filled regions are called pores or voids. Suspensions are fluids with small particles called fines. As a suspension flows through a porous material, some fines are trapped within the material while others that were trapped may be released.
Filters are an example of porous media. We model filters as networks of channels.
As a suspension flows across the filter, particles clog channels. We assume that there is no flow through clogged channels. In the first part of this thesis, we compute a sharp upper bound on the number of channels that can clog before fluid can no longer flow through the filter.
Soil mass is another example of porous media. Fluid in porous media flows through tortuous paths. This tortuosity and inertial effects cause fines to collide with pore walls.
After each collision, a particle looses momentum and needs to be accelerated again by hydrodynamic forces. As a result, the average velocity of fines is smaller than that of the fluid. This retardation of the fines with respect to the fluid may lead to an increase of the concentration of fines in certain regions which may eventually result in the plugging of the porous medium. This effect is of importance in flows near wells where the flow has circular symmetry and thus, it is not macroscopically homogeneous. In the second part of this thesis we develop and analyze a mathematical model to study the physical effect described above.
In the third and last part of this thesis we study particle migration and clogging as suspension flows through filters by means of numerical simulations and elementary analysis. We explore the effect that network geometry, probability distribution of the width of the channels and probability distribution of the diameter of the particles have on the performance of filters.
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Kampel, Guido. "Mathematical modeling of fines migration and clogging in porous media." Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19764.
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Thesis (Ph.D)--Mathematics, Georgia Institute of Technology, 2008.Committee Chair: Goldsztein, Guillermo; Committee Member: Dieci, Luca; Committee Member: McCuan, John; Committee Member: Santamarina, Juan; Committee Member: Zhou, Haomin.
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Söderstedt, Jesper. "Säkerhetiseringen av migration i svensk media : Konstruktionen av ett hot." Thesis, Umeå universitet, Statsvetenskapliga institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-153951.
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This paper aims to investigate a medial construction of securitization. It aims to comprehend the way a discourse of securitization is constructed and in what sense a certain group of immigrants are constructed as an existential threat within it. With postcolonialism, discourse theory and securitization theory providing the theoretical framework the discourse of a far-right internet newspaper is analysed. It is argued that the discourse indeed ought to be considered a discourse of securitization while also maintaining that the relevant group of immigrants are constructed as an existential threat. What this paper thus argues, is that, at least to a limited extent, a securitization of migration is occuring in Swedish far-right media.
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Pedersen, Ørjan. "One-way wave-equation migration for wide-angle propagation in anisotropic media." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11338.
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Seismic depth migration is a major component in the search for hydrocarbons. As new prospects for oil and gas often are found in areas with challenging subsurface structures, more advanced methods to find and evaluate these prospects are needed. One-way wave-equation migration provides an appealing approach to be used to create an image of the subsurface. The characteristics of wave propagation can be described through the dispersion relation, relating the vertical and horizontal phase-slowness. In the first part of this thesis, simple and accurate phase-slowness approximations valid for wide-angle propagation in a VTI media are derived. Information from the subsurface might be increased by recording converted wave reflections in addition to pressure waves. The second part of this thesis provides the development of a set of new one-way propagators for imaging steeply dipping and complex structures using converted and pressure waves in a VTI medium. Reliable amplitude information from one-way methods is useful as hydrocarbon indicators in structural imaging and for migration velocity analysis. In the third part of this thesis, a flux-normalized wavefield decomposition is used as a starting point to develop one-way propagators with improved amplitudes. In new exploration areas, salt structures are important examples of subsurface complexity. This poses a challenge for one-way migration methods due to large velocity contrasts between salt and the surrounding sediments. A novel approach using one-way migration operators combined with a lateral windowing construction to limit the impact of errors introduced by large velocity contrasts is developed
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Vanelle, Claudia [Verfasser], and Dirk [Akademischer Betreuer] Gajewski. "Stacking and migration in an/isotropic media / Claudia Vanelle. Betreuer: Dirk Gajewski." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2014. http://d-nb.info/1048626695/34.
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Sena, Arcangelo Gabriele. "Elastic wave propagation in anisotropic media : source theory, traveltime computations and migration." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/57937.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.Title as it appears in the M.I.T. Graduate List, June 1992: Advances in the theory of elastic wave propagation in anisotropic media, source theory, traveltime computations and migration.
Includes bibliographical references (p. 214-222).
by Arcangelo Gabriele Sena.
Ph.D.
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Mispel, Joachim. "Transversely isotropic media : 3-D wavefront construction method and pre-stack depth migration." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271703.
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Wu, Jun 1968. "Photon migration in turbid media : time-resolved optical imaging in tissue-like phantom." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10792.
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Gill, Richard T. "Electrokinetic-enhanced migration of solutes for improved bioremediation in heterogeneous granular porous media." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12712/.
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Contaminated land is a global problem. Where it presents an unacceptable risk to receptors such as human health or ecosystems, remediation actions must be taken. Current remediation technologies can be ineffective due to mass transfer limitations. A typical scenario where these limitations control remediation efficacy is a physically heterogeneous aquifer where hydraulic conductivity (K) varies spatially. Under these conditions remediation is limited by solute migration across K boundaries. This thesis couples two remediation technologies, in situ bioremediation and electrokinetics (EK), to overcome the mass transfer limitations presented by physically heterogeneous settings. Bioremediation is the transformation of contaminants into less harmful substances by microorganisms; and EK is the application of a direct current to initiate certain transport processes independent of K. Where bioremediation is limited due to the influence of physical heterogeneity, EK transport processes could be applied to initiate an additional flux of solutes across K boundaries. This thesis investigates the influence of physical heterogeneity on EK migration of an amendment designed to enhance bioremediation. The research presented in this thesis advances the current state of knowledge for EK-BIO applications both at the fundamental level and field-scale using laboratory and desk based studies respectively. Laboratory apparatus was designed and built to accommodate physical heterogeneity, electrokinetic transport of solutes and contaminant biodegradation. Broadly, two types of EK experiment were conducted. Firstly, EK amendment migration under abiotic conditions on different arrangements of physical heterogeneity. Secondly, experiments in the same laboratory setup that introduced contaminant and microbial variables. From these experiments a conceptual framework is developed that describes the influence of physical heterogeneity on the EK transport of an amendment. It relates the spatial change in material properties associated with physical heterogeneity with aspects of EK application, such as the voltage gradient, and observes the implications for amendment transport. For example a layered contrast in material type generated a non-uniform electric field when direct current was applied, this led to non-uniform EK transport of the amendment relative to homogeneous settings. When contaminant and microbial variables were introduced to the experimental setup a greater understanding of EK-BIO applications to physically heterogeneous settings was gained. These experiments highlight and discuss the technical issues applying EK to enhance bioremediation by amendment addition versus contaminant removal by EK induced pore fluid movement. Desk based studies included a review of EK-BIO literature and a sustainability assessment that considered EK-BIO at the field scale. The review summarises the practical aspects of the technology in applications to natural environments. It notes that numerous limitations exist to EK-BIO applications in these settings but that there are many different implementation methods that can mitigate these effects. The sustainability assessment compares EK-BIO with conventional remediation technologies against specific criteria for a complex site contaminated with BTEX and MTBE. EK-BIO compares well to other technologies however characteristics of the site will determine the potential sustainability benefits of applying EK.
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Mihai, Tudor Petrut. "Romanian Transnationalism, Mobility and Integration in Sweden : Social Media Manifestations and Its Uses Among Migrants." Thesis, Malmö universitet, Malmö högskola, Institutionen för globala politiska studier (GPS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-18449.
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With the research aim to analyze how the Romanian migrants residing in Sweden use social media for transnational, mobility and integration purposes, this thesis builds on previous transnationalism and social media literature to reach its key findings. Its theoretical field uses Vertovec’s takes on transnationalism along with Wolpert’s place utility theory in order to analyze the observational results. These results were acquired by doing observations of four Facebook groups over a one-month period to which representative discussions from a few group posts were added. Thus, on one hand, the results show that the observed Romanian Facebook groups serve as avenues for socializing, networking and help-seeking between the Romanian migrants in Sweden. Strong potential for the formation of personal connections based on the discussions had by the migrants is also found. On the other hand, this thesis finds that the groups also function as major pathways for the reproduction of Romanian political and cultural aspects within the migrant community, a process which is not obvious and not directly intended for these groups.
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Miniotaite, Jura, and Emma Olsson. "Migration mellan sociala medier : En motivationsstudie av användarmigration." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231296.
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I takt med att allt fler nya sociala medieplattformar introducerats och utmanat definitionen av vad sociala media är, har även användarantalet ökat explosionsartat. Tidigare forskning har identifierat fenomenet migration mellan sociala medier, alltså att användare migrerar från en plattform till en annan. I en undersökning visades det att grupptryck och andra kontakters val att byta plattform låg bakom migration, därför undersöker denna studie vilka drivkrafter som ligger bakom migration utifrån fler aspekter än bara de rent sociala. Statistiken från den årliga rapporten om svenskarna och internet pekar på att migration mellan sociala medier sker. Åldersgruppen 20-25 åringar är de som använder flest olika sociala medieplattformar och därmed är de som har störst möjlighet att migrera. I den här rapporten undersöks vilka de bakomliggande faktorerna som motiverar dessa användare att byta sociala plattformar är. Därför ställs frågan: Vilka är dessa drivkrafter som får användare att migrera mellan sociala medier? Detta är av intresse för framtida social medieutveckling; dels för att förstå vad användare värderar hos nya plattformar, dels för att väletablerade plattformar ska förbli fortsatt relevanta för användarna. För att besvara frågeställningen utfördes elva stycken semistrukturerade intervjuer som var mellan 20-50 minuter långa. Under intervjuerna utgick respondenterna från eget socialt medieanvändande och frågorna berörde tekniska, sociala och organisatoriska motivationsaspekter. Studien visade att det som påverkade respondenternas migration mellan sociala medier framför allt var i) vänner som bytte till nya plattformar och ii) nya innovativa funktioner som lockade dem till en ny plattform. På mer etablerade sociala medier, exempelvis Facebook, upplevde de att kontaktnätet hade blivit för brett och svårare att rikta budskap till, vilket också bidrog till deras migration. Förhoppningen är att undersökningen ska bidra till vidare forskning och utveckling av sociala medier, och därmed bidra till mer långlivade plattformar.As new social media platforms are introduced to us, each redefining what the concept “social media” is, the amount of users is growing fast. Previous research has identified the phenomenon user migration between platforms. One study showed that peer-pressure is motivating users to migrate. Statistics from the yearly report about the swedes and internet also indicate that migration between social media happens. This report investigates the underlying factors that motivate users to switch primary social platforms. The main question in this report is: What are the main drivers for users to migrate between social media? This is of interest to future social media developers; partly to understand what users value in new platforms, and partly for well-established platforms to remain relevant. In order to answer the question, semistructured interviews were conducted and the respondents were asked to answers based on their own social media use with the questions concerning technical, social and organizational aspects. The research showed that the respondents were most affected by friends who switched to new platforms and that new innovative features attracted them to new platforms. On more established social media, they found that the network of contacts became too wide and made direct communication difficult, which ultimately contributed to migration.
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Deigård, Andreas. "Sweden through China's Migration Lenses : A Content Analysis of the People’s Daily’s News Reports on Sweden in Migration Contexts." Thesis, Uppsala universitet, Institutionen för lingvistik och filologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-294359.
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This is a content analysis of the Chinese news paper People’s Daily (Renmin Ribao 人民日报). It examines articles published by the People’s Daily reporting about Sweden in migration contexts between January 1980 and September 2015. The purpose of the project is to investigate changes over time when it comes to agenda-setting, together with which other countries Sweden is mentioned and framing used in the articles. The topics of the articles are listed and a deductive frame analysis is carried out, showing clear signs of changes over time. The data shows that there has been a shift from reporting on international disputes to reporting on Europe’s migration issues. From investigating with which other countries Sweden is mentioned, a conclusion can be drawn that Sweden is portrayed as a country that collaborates with the other European countries to a great extent. The data also shows that there is a low usage of the conflict frame, but a high usage the responsibility- and morality frames in the People’s Daily which is evidence of letting the ideology of the authors shine through. The People’s Daily shows signs of political correctness by shifting from a high usage of episodic framing to thematic framing.
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Gehlert, Andreas. "Migration fachkonzeptueller Modelle /." Berlin : Logos-Verl, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016545183&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Han, Ji-seok. "The role of colloidal particles on the migration of air bubbles in porous media." Thesis, [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2471.
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Zhang, Dongxiao. "Conditional stochastic analysis of solute transport in heterogeneous geologic media." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186553.
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This dissertation develops an analytical-numerical approach to deterministically predict the space-time evolution of concentrations in heterogeneous geologic media conditioned on measurements of hydraulic conductivities (transmissivities) and/or hydraulic heads. Based on the new conditional Eulerian-Lagrangian transport theory by Neuman, we solve the conditional transport problem analytically at early time, and express it in pseudo-Fickian form at late time. The stochastically derived deterministic pseudo-Fickian mean concentration equation involves a conditional, space-time dependent dispersion tensor. The latter not only depends on properties of the medium and the velocity but also on the available information, and can be evaluated numerically along mean "particle" trajectories. The transport equation lends itself to accurate solution by standard Galerkin finite elements on a relatively coarse grid. This approach allows computing without using Monte Carlo simulation and explicitly the following: Concentration variance/covariance (uncertainty), origin of detected contaminant and associated uncertainty, mass flow rate across a "compliance surface", cumulative mass release and travel time probability distribution across this surface, uncertainty associated with the latter, second spatial moment of conditional mean plume about its center of mass, conditional mean second spatial moment of actual plume about its center of mass, conditional co-variance of plume center of mass, and effect of non-Gaussian velocity distribution. This approach can also account for uncertainty in initial mass and/or concentration when predicting the future evolution of a plume, whereas almost all existing stochastic models of solute transport assume the initial state to be known with certainty. We illustrate this approach by considering deterministic and uncertain instantaneous point and nonpoint sources in a two-dimensional domain with a mildly fluctuating, statistically homogeneous, lognormal transmissivity field. We take the unconditional mean velocity to be uniform, but allow conditioning on log transmissivity and hydraulic head data. Conditioning renders the velocity field statistically nonhomogeneous with reduced variances and correlation scales, renders the predicted plume irregular and non-Gaussian, and generally reduces both predictive dispersion and uncertainty.
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Karandaeva, Ekaterina. "Irregular Migration : A case study of Italy." Thesis, Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-67269.
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One of the concerns of the current study is to analyse empirically and theoretically the economic and political causes of irregular migration to Italy in order to proceed with the critical estimation of the national, international and partly supranational migration policies. Since several theories will be applied during the study it will enable me to fully describe the phenomena of the irregular migration and modern enslavement of the irregular immigrants on Italian territory. I will disregard the fact that each theory is criticised on the grounds of being too concentrated on a few aspects of the phenomena and lacking the focus on all of its aspects due to the fact that the joint use of several theories provides a broader outlook. However, one crucial critique will be taken into closer consideration. Thus, the closer study of the phenomenon of modern slavery, strongly interconnected with the irregularity of migration, the duality of the Italian economy and the restrictive migration policies will bring together both the political and economic approaches to migration, whose split appears as the central critique for a great number of IR theories.12 In the normative part of the study I will focus on the critical analysis of the criminal status of the irregular immigrants assigned to them by the Italian migration policies and the Schengen Treaty of the EU in order to prove that instead of a criminal status, a victim status should be given to all immigrants, regardless of whether they were trafficked into Italian territory or crossed the border on their own free will. Additionally, in the normative part of the thesis I will compare and analyse scholars’ previous findings related to the possible amendments to the existing policies and propose my own conclusions and suggestions of how the laws, policies and governmental focuses “ought to be” changed.
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SANTOS, MARCO ANTONIO CETALE. "PHASE-SHIFT DEPTH MIGRATION FOR QP AND QSV WAVEFIELDS ON LOCALLY TRANSVERSE ISOTROPIC (LTI) MEDIA." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4373@1.
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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOEste trabalho propõe uma técnica do tipo rotação de fase para migração em profundidade de dados sísmicos para meios com simetria polar local (localmente transversalmente isotrópicos, LTI), nos quais a direção do eixo de simetria varia continuamente ao longo das camadas. São testadas, através de simulações numéricas de levantamentos sísmicos, a precisão e a estabilidade do método, em função da variação do eixo de simetria. Para a realização das simulações, desenvolveu-se um método a partir da solução da equação elástica da onda usando-se a técnica das diferenças finitas, que possibilita a modelagem em meios LTI, onde cada ponto da malha tem suas características definidas pelas velocidades de fase P e SV, parâmetros de Thomsen, densidade e inclinação do eixo de simetria. Na separação dos modos de onda qP e qSV dos sismogramas, implementou-se um algoritmo baseado na solução da equação de Christoffel para determinar os operadores de separação. A migração para cada família de tiro comum é realizada por soluções da equação da onda usando somente técnicas de rotações de fase. De fato, tanto a depropagação do campo registrado quanto a geração das matrizes de tempo utilizadas na condição de imageamento, são realizadas por soluções que envolvem rotações de fase para cada conjunto de parâmetros, em cada nível de profundidade. Nos resultados das migrações usando reflexões dos tipos qP-qP, e qP-qSV, os horizontes foram localizados precisamente e verificou-se que o processo é estável em relação à variação do eixo de simetria. Vale ressaltar que o método não está restrito a aquisições sísmicas multicomponentes, podendo ser aplicado em dados sísmicos marítimos convencionais, como também em dados provenientes de aquisições do tipo OBC (Ocean Bottom Cable) e com cabo vertical. Como o método proposto se baseia em algoritmos que utilizam técnicas de rotação de fase, a sua implementação conta com o beneficio de ser altamente paralelizável.
This work proposes a technique based on the phase-shift method to implement pre-stack depth migration on locally transverse isotropic media (LTI), in which the direction of the symmetry axis varies continually along the layers. Through numerical seismic data simulations the methods robustness and stability were tested in relation to the axis symmetry variations. For seismic modeling, a generalization of the finite differences method for the solution of the elastic wave equation was used. With this procedure, it was possible to accommodate seismic modeling on LTI media defined by six parameters at each grid point, i.e., density, P and S wave propagation velocities along the local symmetry axis, Thomsen parameters and, the direction of the local symmetry axis itself. In order to separate from the seismograms the qP and qSV wavefields, an algorithm based on the Christoffel equation was implemented. The migration for each common shot gather is implemented solely by phase-shift based algorithms, which means that not only the depropagation of the registered wavefield, but also the generation of the time matrices involved in the imaging condition were obtained in this manner for each set of parameters at each depth level. The migration results using qP-qP and qP-qSV reflections show that the horizons were located precisely, and that the process is stable in relation to the symmetry axis variations. The proposed method is not restricted to multicomponent seismic acquisitions, but it can be applied to marine seismic data using streamers, or Ocean Bottom Cables or vertical cables. Since the proposed method uses phaseshift algorithms, its parallel implementation can be highly efficient.
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Rasouli, Pejman. "On the role of multicomponent diffusion and electrochemical migration for reactive transport in porous media." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59956.
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In multicomponent solutions, electrostatic coupling between charged species leads to a process called “electromigration”. Neglecting electromigration results in a charge imbalance and an incomplete and unrealistic description of mass transfer. Although not commonly considered in reactive transport codes, electromigration can strongly affect mass transport processes and can explain unexpected behaviors such as uphill diffusion or isotope fractionation. Including electrostatic coupling in reactive transport codes enables simulation of problems involving mass transport by advection and diffusion, electromigration and geochemical reactions, such as electrokinetic remediation and the geobattery concept associated with buried ore bodies. There are generally two methods for coupling charge and mass continuities. The first method is based on the null-current approach which assumes negligible electric current transmission. The second method considers explicit coupling of mass and electric fluxes. In this study both methods are investigated and their implications for reactive transport are examined.
To this end, MIN3P, a fully coupled 3D reactive transport code, was extended by integrating the Nernst-Planck and Gauss-Ampère equations. The implementation of the Nernst-Planck equations was verified by inter-comparison with other existing reactive transport codes based on a set of benchmark problems. At the same time, these benchmark problems illustrate the effect of electric coupling during multicomponent diffusion and electrochemical migration.
By explicit coupling of the Nernst-Planck and Gauss-Ampère equations, MIN3P was further enhanced to simulate electrokinetic remediation and the resulting code was tested for desalination problems. In addition, scenario and sensitivity analysis were used to investigate the potential for spontaneous exsolution of gases in response to gas generation at the electrodes of electrokinetic remediation systems.
Finally, a process-based model linking surface-measureable self-potential signals to electrochemical transport and geochemical reactions associated with buried metallic bodies was developed. The enhanced code provides a reactive transport modeling framework for process-based forward modeling of self-potential signals and associated geochemical signatures of buried ore bodies and allows a quantitative investigation of the “geobattery concept”. The code was tested based on published data from a laboratory experiment involving a buried iron bar and used to evaluate the geobattery concept based on an illustrative example of a buried ore body.Applied Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
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Riedel, Marko. "Efficient computation of seismic traveltimes in anisotropic media and the application in pre-stack depth migration." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-204044.
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This study is concerned with the computation of seismic first-arrival traveltimes in anisotropic media using finite difference eikonal methods. For this purpose, different numerical schemes that directly solve the eikonal equation are implemented and assessed numerically. Subsequently, they are used for pre-stack depth migration on synthetic and field data.
The thesis starts with a detailed examination of different finite difference methods that have gained popularity in scientific literature for computing seismic traveltimes in isotropic media. The most appropriate for an extension towards anisotropic media are found to be the so-called Fast Marching/Sweeping methods. Both schemes rely on different iteration strategies, but incorporate the same upwind finite difference Godunov schemes that are implemented up to the second order. As a result, the derived methods exhibit high numerical accuracy and perform robustly even in highly contrasted velocity models.
Subsequently, the methods are adapted for transversely isotropic media with vertical (VTI) and tilted (TTI) symmetry axes, respectively. Therefore, two different formulations for approximating the anisotropic phase velocities are tested, which are the weakly-anisotropic and the pseudo-acoustic approximation. As expected, the pseudo-acoustic formulation shows superior accuracy especially for strongly anisotropic media. Moreover, it turns out that the tested eikonal schemes are generally more accurate than anisotropic ray tracing approaches, since they do not require an approximation of the group velocity.
Numerical experiments are carried out on homogeneous models with varying strengths of anisotropy and the industrial BP 2007 benchmark model. They show that the computed eikonal traveltimes are in good agreement with independent results from finite difference modelling of the isotropic and anisotropic elastic wave equations, and traveltimes estimated by ray-based wavefront construction, respectively. The computational performance of the TI eikonal schemes is largely increased compared to their original isotropic implementations, which is due to the algebraic complexity of the anisotropic phase velocity formulations. At this point, the Fast Marching Method is found to be more efficient on models containing up to 50 million grid points. For larger models, the anisotropic Fast Sweeping implementation gradually becomes advantageous. Here, both techniques perform independently well of the structural complexity of the underlying velocity model.
The final step of this thesis is the application of the developed eikonal schemes in pre-stack depth migration. A synthetic experiment over a VTI/TTI layer-cake model demonstrates that the traveltime computation leads to accurate imaging results including a tilted, strongly anisotropic shale layer. The experiment shows further that the estimation of anisotropic velocity models solely from surface reflection data is highly ambiguous. In a second example, the eikonal solvers are applied for depth imaging of two-dimensional field data that were acquired for geothermal exploration in southern Tuscany, Italy. The developed methods also produce clear imaging results in this setting, which illustrates their general applicability for pre-stack depth imaging, particularly in challenging environments.
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Ouma, Radoli Lydia [Verfasser], Anna [Gutachter] Amelina, and Christer [Gutachter] Petersen. "Narratives of migration and development as discourses in transnational digital migrant media : the case of Kenyan migration to Europe / Lydia Ouma Radoli ; Gutachter: Anna Amelina, Christer Petersen." Cottbus : BTU Cottbus - Senftenberg, 2019. http://d-nb.info/1181792541/34.
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Murwira, Vincent. "The Open Newsroom: the broadcast news ecosystem in an era of online media migration and audience participation." AUT University, 2010. http://hdl.handle.net/10292/940.
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The media has always gone through changes, starting from the era of the Gutenberg printing press several centuries ago, to the introduction of radio and television in the last 100 years. In the last two decades, Internet and digital technologies have rapidly transformed the media and reshaped how news is gathered and disseminated, and re-defined audiences and their role in the media. Before the Internet, news dissemination was scheduled and periodic, for example the 6pm television bulletin or weekly newspaper. Today news is now global and published in 24/7 round the clock news cycles. At this time, there were clear demarcations between radio, television and newspapers, which were all separate entities. These demarcations have largely fallen away as all media have migrated online to publish on the same platform, using the same elements such as text, audio and video. Increasingly, television is migrating online to the degree that forecasts predict that online television will eclipse traditional TV as we now know it, just as much as online newspapers have eclipsed traditional newspapers. This debate is widely contested In pre-Internet days, the media had distinct demarcations between the media owners, news gatherers (and production people), like journalists, and the audience. These demarcations are blurring as audiences increasingly participate in the media resulting in the emergence of a new breed of journalists; the citizen journalist. This is the most popular term used to describe these new journalists. The dynamic nature of the online platform and functionalities like Web 2.0 made it possible for anyone to publish themselves online, on a blog, on social networking sites or to set up their own website, at very little or no cost. This has spurred a lot of creativity, and the wider public has created vast amounts of content such as video, audio and text and submitted or published them online. Consequently, content creation is no longer the preserve and domain of the media and journalists; the ubiquitous nature of the Internet and the availability of other enabling technologies: inexpensive digital technologies like video cameras, digital cameras and recorders means that anyone with access can now create content and disseminate it. Debates in many parts of the world have suggested that these abilities are catalysts that could spur the public into contributing news and video content of breaking news to the media and help keep the 24/7 round the clock news cycle current. After all, some online social networking sites have already demonstrated that citizens possess the skills to produce and publish video content. At a time when the media is facing financial pressure due to reduced advertising revenues, caused in part by the economic crisis and by the shift to the online platform, there are suggestions that citizens could help newsroom budgets by contributing material. It is against this background of rapid online migration by the media, and the emergence of this new breed of news gatherers, that this research on the Open Newsroom is set. The research topic is not new; a body of research about online migration of the media and the new news ecosystem exists in many other countries. In New Zealand however, this is still an emerging area of for research. This research monitored news bulletins on New Zealand’s two main television news channels, 3 News on TV3 and One News on Television New Zealand for 12 months from early 2008 to late 2009. The idea was to gauge and analyse the amount of content submitted by citizen journalists. The research also looked at a case study which illustrated the potential dangers of using news content submitted by citizen journalists. The research sought the professional opinions of a wide range of decision makers and influential people from the New Zealand media such as editors, journalists and publishers and those involved in the training of journalists in New Zealand. Using a Mini-DV video camera and a digital audio recorder, the researcher filmed and recorded interviewees and edited video clips of the interviews which were then published in the media gallery on the website www.theopennewsroom.com. The interviews sought to find out and discuss the online migration by the media, the new news ecosystem, the public’s participation in the media and the benefits and disadvantages of citizen journalism. To put the research into perspective, the website also carries some research articles and literature reviews on the media. The research findings from the interviews with New Zealand media professionals who participated in the study match trends happening in many countries. While most value the potential benefits of citizen journalists in the news process, some strongly expressed a great deal of skepticism and suspicion regarding news contribution from nontraditional journalism sources. In general, the research offered a series of insights into modern media rather than clear-cut answers
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Vollbrecht, Ralf, and Christine Dallmann. "Editorial - Transhumanismus, Migration, Gender – Aktuelle gesellschaftliche Aspekte im Film." Technische Universität Dresden, 2018. https://tud.qucosa.de/id/qucosa%3A31425.
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Mit Transhumanismus, Migration und Gender werden in dieser Ausgabe von Medienwelten drei aktuelle gesellschaftliche Aspekte thematisiert, die im Rahmen von Filmanalysen sowie einer empirischen Rezeptionsstudie zu den Lieblingsfilmen und Lieblingshelden von Kindern bearbeitet werden.
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Schüler, Dana. "Macroeconomic und microeconomic effects of migration /." Lohmar [u.a.] : Eul, 2009. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=017325488&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Chisholm, Katelyn S., and Katelyn S. Chisholm. "The Impact of Migration on the Lives of Women Left Behind in Puebla, Mexico." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/620695.
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Mexican migration to the United States has become a pressing concern subject to widespread debate. Border and migration policies have complicated family lives in rural Mexico, leaving some family members to migrate north while others are left behind. As the husbands of women in communities near Puebla, Mexico migrate to the US, they are increasingly given the unfamiliar role of becoming the head of their house-hold. There has not been much research that examines the unique pressures that this role brings. This project examined the challenges and coping strategies women face in this situation during health emergencies, and the role of social media in maintaining strong family ties across international borders. This research calls upon the narratives of women struggling to survive on their own while also attempting to maintain the standards required of marianismo in Mexican society. The research is based on a small number of semi-structured qualitative interviews conducted in rural areas of Puebla, Mexico about demography, migration, social media Health emergencies; and other challenges and Coping Strategies. Results portrayed a nuanced view of women's struggle between family and work life that suggested the beginnings of change in women's role in traditional, rural Mexican society. Women who could afford to stay at home often had a negative perception of women who needed to work, and vice versa. Women found work and social support to be helpful coping mechanisms. Common challenges were relationship maintenance, single parenting, health emergencies, and coping with feelings of abandonment. Social media often added to these feelings of abandonment.
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Onumah, Chido. "Digital migration: A comparative study of the digital transition of the print media in Nigeria and South Africa." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667970.
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Internet está cambiando la forma en que las personas en África y en todo el mundo se comunican. También ha impactado enormemente la forma en que operan los medios de comunicación. En muchos países, las personas dependen cada vez menos de los medios tradicionales (periódicos, revistas, radio, televisión) para la información y la comunicación. Las organizaciones tradicionales de periódicos, al igual que los periodistas en África y en todo el mundo, están aprendiendo a adaptarse y aceptar la nueva realidad tecnológica. Si bien la revolución de Internet en África sigue evolucionando, ha creado oportunidades y desafíos que están redefiniendo la forma en que los periódicos, los periodistas y la audiencia acceden y difunden información.
Esta investigación examina el impacto de la transición digital en los periodistas de los periódicos de África que utilizan Nigeria y Sudáfrica como estudios de caso. Revisa el efecto y la creciente importancia de Internet, los periódicos en línea y las redes sociales, en la configuración del futuro del periodismo impreso, el negocio de los periódicos y la interacción de la audiencia en ambos países. La investigación sostiene que los nuevos medios están redefiniendo el periodismo en Nigeria y Sudáfrica. No solo ha creado nuevos tipos de periodistas y público que ya no son receptores pasivos de las noticias, sino que también ha lanzado nuevos modelos de negocios para la industria de las noticias que se enfrentan a la saturación severa.
La investigación concluye que este cambio ha sido claro y lejano. Alcanzar implicaciones para los periodistas, así como para los periódicos y su audiencia; que si los periodistas en Nigeria y Sudáfrica son conscientes de la importancia y las interrupciones causadas por la nueva fase en la evolución de los medios de comunicación, todavía falta una fórmula coherente para enfrentar los desafíos y hay muchos factores más allá del alcance de los periodistas que están configurando su reacción.The Internet is changing how people in Africa and around the world communicate. It has also greatly impacted the way the media operates. In many countries, people are depending less and less on the traditional media (newspapers, magazines, radio, television) for information and communication. Traditional newspaper organisations as we l as journalists in Africa and around the world are learning to adapt and come to terms with the new technological reality. While the Internet revolution in Africa is still evolving, it has created opportunities and challenges that are redefining the way newspapers, journalists and the audience access and disseminate information. This research examines the impact of the digital transition on newspaper journalists in Africa using Nigeria and South Africa as case studies. It reviews the effect and growing importance of the Internet, online newspapers and social media, in shaping the future of print journalism, the newspaper business and audience interaction in both countries. The research argues hat new media is redefining journalism in Nigeria and South Africa. It has not only created new kinds of journalists and audience who are no longer passive receptors of news, it has thrown up new business models for the news industry facing severe glut. The research concludes that this change has clear and far - Reaching implications for journalists as well as newspapers and their audience; that if journalists in Nigeria and South Africa are aware of the importance and disruptions wrought by the new phase in the evolution of the media, there is still missing a coherent formula in dealing with the challenges and that there are a lot of factors some beyond the purview of journalists that are shaping their reaction.
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Totten, Christian T. "Effect of porous media and fluid properties on dense Non-Aqueous Phase Liquid migration and dilution mass flux." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010044.
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Filippini, Maria <1986>. "Geological and hydrogeological features affecting migration, multi-phase partitioning and degradation of chlorinated hydrocarbons through unconsolidated porous media." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6812/.
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Chlorinated solvents are the most ubiquitous organic contaminants found in groundwater since the last five decades. They generally reach groundwater as Dense Non-Aqueous Phase Liquid (DNAPL). This phase can migrate through aquifers, and also through aquitards, in ways that aqueous contaminants cannot. The complex phase partitioning to which chlorinated solvent DNAPLs can undergo (i.e. to the dissolved, vapor or sorbed phase), as well as their transformations (e.g. degradation), depend on the physico-chemical properties of the contaminants themselves and on features of the hydrogeological system. The main goal of the thesis is to provide new knowledge for the future investigations of sites contaminated by DNAPLs in alluvial settings, proposing innovative investigative approaches and emphasizing some of the key issues and main criticalities of this kind of contaminants in such a setting. To achieve this goal, the hydrogeologic setting below the city of Ferrara (Po plain, northern Italy), which is affected by scattered contamination by chlorinated solvents, has been investigated at different scales (regional and site specific), both from an intrinsic (i.e. groundwater flow systems) and specific (i.e. chlorinated solvent DNAPL behavior) point of view. Detailed investigations were carried out in particular in one selected test-site, known as “Caretti site”, where high-resolution vertical profiling of different kind of data were collected by means of multilevel monitoring systems and other innovative sampling and analytical techniques. This allowed to achieve a deep geological and hydrogeological knowledge of the system and to reconstruct in detail the architecture of contaminants in relationship to the features of the hosting porous medium.
The results achieved in this thesis are useful not only at local scale, e.g. employable to interpret the origin of contamination in other sites of the Ferrara area, but also at global scale, in order to address future remediation and protection actions of similar hydrogeologic settings.
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Mkdad, Rudeina. "Problem representations of 'racisms' between people with migrant backgroundin online Swedish mass media." Thesis, Linköpings universitet, Institutionen för samhälls- och välfärdsstudier, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-158105.
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This project explores, identifies, and interrogates how Swedish online mass media represent the issue of 'racisms' between people with migrant background/migrant groups and the implications of these representations on their lives. The materials are analyzed using the WPR approach (Bacchi 1999) and content media analysis. The theoretical background draws from social psychological theory of intergroup relations, postcolonial theory and critical race theory in order to establish an overview of the concept of ‘racism’ and how it can be used in relation to migrant groups. Where the media representations maintained that migrants can produce 'racism', led to further stigmatization and exclusion of migrant groups. Internalizing racism by migrants can result in self-hatred and practicing migrant respectability in order to differentiate themselves from undesirable migrants as represented in the materials. This project contributes in exploring the system of hierarchies which can deepen our understanding of how tensions and conflicts work between migrant groups.
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Mickens, Leah M. "Rescuing the legacy project." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28239.
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Thesis (M. S.)--Digital Media, Georgia Institute of Technology, 2009.Committee Chair: Knoespel, Kenneth; Committee Member: Burnett, Rebecca; Committee Member: Fox Harrell; Committee Member: TyAnna Herrington.
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Gustafsson, Jonas, and Fredrik Alserin. "CCS - Collect, Convert and Send : Designing and implementing a system for data portability and media migration to mobile devices." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-945.
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In this thesis we will identify which are the desired features and functionalities for implementing a system capable of acting as an information bridge for content available in the “wired” Internet to be delivered to mobile devices. We will also explore how to design and build such a system based on the specifications within parts of the MUSIS project. The MUSIS’ system development is used as a base of the work described in this thesis and the experiences from those efforts are used in order to design a system with more focus on data portability and media migration.
During the development of the MUSIS platform, problems related to system upgrading, i.e. adding new ad-hoc functionalities were discovered. Due to the fact that a user-centred design approach was taken, this was essential in the project. To solve some of these issues, we propose a new component-based system with a high level of scalability and re-usability. We name this system Collect, Convert and Send, CCS. The system shall be seen as a base that can be used as a core system for different projects where interoperability of content between different platforms, devices or systems is important.
The implementation of the system is based on the use cases and those theoretical aspects and ideas related to component software, interoperability, media migration and metadata in a Web service context. The results of our efforts give some indications that the use of component software gives a foundation for a service-oriented architecture.
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Busch, Oliver. "Essays on migration, human capital investment, and redistribution /." [S.l. : s.n.], 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016806573&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Waleij, Max. "Svenskhet producerad genom utvisningar : en tvärvetenskaplig studie om identitetskonstruktioner i media." Thesis, Linköpings universitet, Institutionen för kultur och samhälle, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177652.
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Utvisningar av personer som enligt lag inte har rätt att vistas i Sverige sker allt oftare. Sedan millennieskiftet har antalet utvisningar per år femdubblats. I media har skrivandet om utvisningar också ökat markant. I ett land som både av andra och av sig självt ansetts vara ett föregångsland när det gäller att ta hänsyn till mänskliga rättigheter och internationell rätt är detta anmärkningsvärt. Denna studie är ett tvärvetenskapligt initiativ som syftar till att förstå föreställningar om nationell gemenskap baserad på utvisningar av andra. Inte nödvändigtvis för att ogiltigförklara en nationell gemenskap som sådan, utan för att belysa hur det går till när den produceras. En sådan kunskap ger möjligheten att ta ställning till politiska val som annars inte framstår som politiska. Då en allomfattande översikt över en nationell gemenskap och utvisningar inte ryms i formatet för uppsatsen analyseras tidningsartiklar i media, som ändå kan hävdas ge en bred vy av ämnet. Genom en kombination av kvantitativ och kvalitativ analys av tidningsartiklarna ges både bred överblick och djupare förståelse av utvisningarnas produktiva och identitetsskapande egenskaper. Den kvantitativa delen utförs genom en innehållsanalys och den kvalitativa genom en diskurspsykologisk analys. Studien visar att svenskhet produceras på ett flertal sätt genom artiklarna, som alla på något sätt möjliggörs genom att kontrasteras mot en föreställd annan.
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Bai, Zhihe. "Nationalism and The Construction of Others in China : Exploring Social Media in the Shadow of the “Refugee Crisis”." Thesis, Linköpings universitet, REMESO - Institutet för forskning om migration, etnicitet och samhälle, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-159821.
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This research examines discourses on the social media site Weibo around the group of international asylum seekers during an online campaign launched by United Nations High Commissioner for Refugees to raise awareness of asylum seekers in the People’s Republic of China on June 2017. Sina Weibo is a Chinese social media site with its users making up of around 50% of total Chinese internet users (Weibo, 2017). Despite the background that Chinese government aims at taking more significant responsibility in global governance, in the same time as China demonstrates emerging interests in refugee issues, commentaries from grassroots Chinese on social media, however, held an altered stance. According to the author’s observation, during and after the UNHCR campaign of World Refugee Day on June 20, 2017, comments on topics of international refugee, refugee protection as well as certain religious and ethnic groups (Islam and Muslim, for example) on Weibo were mainly loaded with negative emotions, biased stereotypes, and resistant sentiments. The study is an interdisciplinary study contemplating theory in several disciplines, such as international migration and ethnic relations, international relations, public attitude dynamics, public communication, and new media. It is based on a critical discourse analysis approach, where the relationship between cyber discursive practices and the social, cultural, and power structure in the Chinese context is studied. Chinese public perception of the European “refugee crisis”, the public reaction toward several humanitarian pursuits which are deemed to be possessed by the West, grassroots identification of usand them, the global production and dissemination of particular xenophobic and Islamophobic sentiments will be studied. Last but not least, features of social media concerning their possible impacts on the aspects mentioned above are analyzed.
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Davey, Gareth. "Identity and quality of life among Badagas in South India with reference to rural-to-urban migration and new media." Thesis, University of Kent, 2017. https://kar.kent.ac.uk/61850/.
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The thesis is about the experiences of Badagas living in contemporary India as they navigate a society in flux, the extent to which change permeates and influences understandings of self and life. Badagas, like others in India, have been experiencing profound changes as new ideas, products, and ways of living have become widespread. An increasing number of people are migrating to cities in search of education and employment, and technologies such as new media now influence communication and interaction. To understand these new circumstances, the primary concern of the thesis is an investigation of the identities and life quality of Badagas in South India with reference to rural-to-urban migration and new media, an important case study of the impact of India's social and economic transformation on its people, and a timely update of the antiquated picture of Badagas in the literature. At an empirical level, the thesis unpacks how Badagas understand themselves and their lives in today's India. However, it is also about changing the ways they have been understood and represented in the literature. At a theoretical level, therefore, the thesis deconstructs and redefines the meaning of 'Badaga' portrayed in the academic literature, and rebalances inequalities of representation. The thesis, then, is an empirical and theoretical investigation of the meaning of being Badaga, a critical appraisal of previous writings combined with empirical research to advance new ideas. To set the scene of the thesis, the first chapter introduces the Nilgiri and its peoples and their general depiction in the literature, and teases out some of the themes and styles which characterise writings. It also endeavours to identify what is already known about Badagas, and gaps in knowledge, to make a case for the empirical research in subsequent chapters. Chapter one highlights the numerous markers which have been used to differentiate Badagas based on the assumption in the literature that they are a distinct social group sharing a common history and culture. It also reveals the limitations of their portrayal based on the style and trends of social science in the first and latter halves of the twentieth century which reify a simple Badaga identity, an artefact which has since become a staple of the literature. Building on this introduction, chapter two reviews in further detail the diverse ways identity has been deployed in social science generally and the Nilgiri specifically, and the varied, loose, and contradictory ways the identities of Badagas have been documented. Similarly, chapter two also explores the varied meanings of quality of life and previous studies concerning Badagas. The chapter shows the majority of writings align with classical essentialist conceptualisations of fixity and rigidity, and 'the Badagas' as a category of difference has been framed in terms of homogeneity as a bounded group, isolation in a unique region, and speculations of identity change which mirror old-fashioned views of bounded undifferentiated cultures coming into contact, namely a minority group adopting the culture of the majority, as if change among Badagas is a product of the colonial experience. Similarly, regarding their quality of life, the majority of writings are concerned with imperial history and Western culture to speak for Badagas, which positions the changed way of life in the Nilgiri after the arrival of the British as important and superior to the past. Collectively, chapters one and two show previous representation of Badagas, although a rigorous and meticulous attempt at documenting their rich culture and history, is unsatisfactory in both theoretical and practical terms when it comes to understanding identity and life quality, a failure to offer terms with which to understand their complexity and diversity. The methodology of the monograph, outlined in chapter three, provides a contemporary social constructionist approach to iron out the epistemological problems discussed above. It begins with an overview of the multi-site approach of the research, designed to overcome the limitations of previous studies which regard Badagas and the Nilgiri as local and bounded in an isolated region, essentially the removal of geographical barriers to appreciate Badagas as dynamic and mobile and to capture new forms of identities in flux in multiple situations, namely rural-to-urban migration and new media, that transcend bounded spaces. The next section of the chapter introduces the thesis's theoretical orientation, symbolic interactionism, employed to examine the shared subjective experiences, meanings, and lived experiences of Badagas in contemporary India with emphasis on agency, social process, and subjective experience, a deliberate move away from previous macro-level deterministic and functionalist trends in the literature. The remaining sections of chapter three describe the operationalization of identity in the thesis, data collection from forum posts and face-to-face interviews, data analysis involving coding and thematic analysis, and ethical considerations. The thesis's methodology, then, is an interpretative group of complementary methods-multisite ethnography, symbolic interactionism, thematic analysis, and reflexivity-focused on analytically disclosing the subjective knowledge and meaning-making of Badagas, and thus providing greater flexibility in understanding their identities and quality of life. Grounded on this methodology, chapters four and five empirically investigate the identities and life quality of Badagas in two connected locations in a multi-site approach, the first online with Internet forum users, and the second in the real world with rural-to-urban migrants in Bangalore. Specifically, chapter four examines online portrayals and understandings of identity and life among Badagas in a virtual forum community, an online website with discussions in the form of posted messages, and the nature of the new type of community. It begins with a discussion of the paucity of media and visual studies of the Nilgiri and its peoples, the need for further research, and the role of media as a prime information source and facilitator of cultural change. Next is an analysis of the content of the virtual forum, a source of information about the goings-on of Badagas including their past and current circumstances which contain new material hitherto undocumented in the literature. As the first study of new media usage among Badagas, it shows they now have an online presence, a new type of Badaga social collective connected by online social interaction and notions of culture. Regarding identity, a strong sense of being Badaga was revealed in forum dialogues, as the study analysed how forum members articulated and expressed different understandings of their caste, reasserted perceptions of distinctiveness, and deployed identity strategically in activism when they constructed images of Badagas as victims of marginalization. While the findings seem to support, at least from the perspective of forum members, the reification of an overarching Badaga identity as something tangible, the forum discussions also revealed their abstractness and diversity, a heterogeneity of Badaga identities, particularly in lively debates and discussions in which images were contested, defended, and negotiated. Regarding quality of life, a negative depiction was a salient theme in forum discussions which centred on the demise and low profitability of agriculture, and there were also concerns about education and healthcare provision.
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Montague, James. "Assessing The Probability Of Fluid Migration Caused By Hydraulic Fracturing; And Investigating Flow And Transport In Porous Media Using Mri." ScholarWorks @ UVM, 2017. http://scholarworks.uvm.edu/graddis/793.
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Hydraulic fracturing is used to extract oil and natural gas from low permeability formations. The potential of fluids migrating from depth through adjacent wellbores and through the production wellbore was investigated using statistical modeling and predic-tive classifiers. The probability of a hydraulic fracturing well becoming hydraulically connected to an adjacent well in the Marcellus shale of New York was determined to be between 0.00% and 3.45% at the time of the study. This means that the chance of an in-duced fracture from hydraulic fracturing intersecting an existing well is highly dependent on the area of increased permeability caused by fracturing. The chance of intersecting an existing well does not mean that fluid will flow upwards; for upward migration to occur, a pathway must exist and a pressure gradient is required to drive flow, with the exception of gas flow caused by buoyancy. Predictive classifiers were employed on a dataset of wells in Alberta Canada to identify well characteristics most associated to fluid migration along the production well. The models, specifically a random forest, were able to identify pathways better than random guessing with 78% of wells in the data set identified cor-rectly.
Magnetic resonance imaging (MRI) was used to visualize and quantify contami-nant transport in a soil column using a full body scanner. T1 quantification was used to determine the concentration of a contaminant surrogate in the form of Magnevist, an MRI contrast agent. Imaging showed a strong impact from density driven convection when the density difference between the two fluids was small (0.3%). MRI also identified a buildup of contrast agent concentration at the interface between a low permeability ground silica and higher permeability AFS 50-70 testing sand when density driven con-vection was eliminated.
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Zahiri, Isfahani Aqeel, and Charlotte Rückl. "Permanent uppehållstillstånd till syriska flyktingar : diskursanalysom ansvar, stereotyper och EU." Thesis, Södertörns högskola, Institutionen för samhällsvetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-25532.
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Syftet med uppsatsen är att undersöka den diskurs som följde i svensk media efter migrationsverkets beslut att ge syriska flyktingar permanent uppehållstillstånd. Metoden som vi har utgått ifrån är kritisk diskursanalys och innehållsanalys. Som data har vi valt ut tolv artiklar och två TV-program. Resultatet visar att media äger den makt som gör att de får avgöra hur ett sådant beslut ska presenteras och diskuteras. Resultatet visar även att media använder idag en annorlunda diskurs jämfört med 1980 och 1990 talet. Media kan med sin makt avgöra vem som ska/inte ska uttrycka sig. En ”Vi” och ”De” skapas av media som skiljer mellan den etablerade och den oetablerade i samhället. Samtidigt kan media med sin diskurs bestämma om vilka kulturella krav som ska sättas på en nykomling. Vidare har vi lagt märke till hur siffror och kvantifiering upptar en stor del av debatten och att det inte sker med en motivering till varför detta sker. Den sociala kontext som journalisterna verkar inom är styrd av riktlinjer som säger att de i nyhetsförmedling måste vara objektiva och endast får låta andra aktörer uttala sig målande och subjektivt om migration. Däremot får deras personliga tankar och yttringar visas i debatt- och ledarsidor.The purpose of this thesis is to study the discourse Swedish media use to discuss the government decision to give permanent residency to all Syrian refugees who arrive in Sweden. The method we use in our study is the critical analysis of discourse and content analysis. As data we have chosen articles and programs from Swedish public service television and newspapers. The result of our thesis show that media has the power to form the discourse about the Syrian refugees. The result as well shows that the discourse has changed over the past twenty to thirty years. A “us and them” is created in the language media use which divides the established citizens from the unestablished refugees. At the same time media can decide which cultural demands can be put down to a newly arrived person. During the research we also found that the discourse uses many digits and that a quantification takes place without any real explanation to why it takes place. The social context in which the journalists has to work within is regulated by rules about objectivity in newsfeed and they can only let others which they interview talk in a subjective manner about migration. On the other hand the journalists are allowed to say what they think in debate programs and editorial pages.
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Tingskog, Hedda. "Journalistik som visar vägen : En studie om åsikter i nyhetsrapporteringen och dess påverkansmöjligheter på publiken." Thesis, Södertörns högskola, Journalistik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-32940.
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This study’s aim is to make visible journalistic power to form, strengthen and effect readers’ opinions. Within a Swedish journalistic discourse, this study examines how opinions take form in the news report, with what methods journalists legitimises or questions opinions and how social issues are being defined and portrayed as means to target the self-image of journalists as impartial and independent. This study applies theories of mediatisation, the mediated construction of reality, agenda setting, perception of public opinions, influence and the sources and media portrayal. I focus on the case of the refugee migration to Europe in the fall of 2015. The study analyzes daily, local and evening press such as Svenska Dagbladet, Dagens Nyheter, Sydsvenskan, Göteborgs-posten, Expressen and Aftonbladet, during the period of january 1st 2015 to december 31st 2016. The results show the power of journalists to affect the audience’s view on refugees as well as migration and their stand towards it. Further, the study presents journalistic methods to legitimise or question opinions in the news report, as well as the importence of sources when defining and portraying social issues. Furthermore, the study shows the level of the news as well as policial residence of the media to be of greater importance for this than the media form itself.
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da, Cunha Vaena Marisol França. "Brazilians in Stockholm: A Case Study of Media and Nostalgia." Thesis, Stockholms universitet, Institutionen för mediestudier, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-93641.
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This study explores the relationship between media and nostalgia – the longing of a home and a time left behind – among Brazilian citizens who live in Stockholm. At present, the flow of immigrants is characterized by a high level of interconnection. Contemporary immigrants, especially those who live in global cities such as Stockholm, have easy access to the latest technologies, which significantly increases their access to home country media and also communication with home country though social networks. Which a Media Ethnographic approach including survey and short interviews, it shows how the respondents use Information and Communication Technologies in order to get information from Brazil.
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Vollbrecht, Ralf, and Christine Dallmann. "Medienwelten - Zeitschrift für Medienpädagogik." Technische Universität Dresden, 2018. https://tud.qucosa.de/id/qucosa%3A31423.
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Mit Transhumanismus, Migration und Gender werden in dieser Ausgabe von Medienwelten drei aktuelle gesellschaftliche Aspekte thematisiert, die im Rahmen von Filmanalysen sowie einer empirischen Rezeptionsstudie zu den Lieblingsfilmen und Lieblingshelden von Kindern bearbeitet werden.
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Alves, Canteiro Julie. ""No Justice, No Peace, No Racist Police" : A diachronic comparative study and analysis of the power relations revealed in French media discourses." Thesis, Malmö universitet, Institutionen för globala politiska studier (GPS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-44302.
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On May 26th, 2020, the world was shocked after learning that George Floyd had died at the hands of the police while being wrongfully arrested. Protests took place worldwide, demanding justice for Floyd as well as the end of the systematic racism present institutionally in police forces. In Europe, people started raising their voices, denouncing that this phenomenon was no stranger to the Old Continent. Indeed, the last few years have witnessed the media coverage of multiple cases of police violence based on ethnic grounds. The media play a key role as the source of information for the population, they decide what is going to be on the headline, catching people’s eye. France has especially attracted attention with its racial profiling practices that go against the 2001 European Code of Police Ethics acting as recommended guidelines for the Member States. Therefore, this study aims to analyse media discourses depicting three specific cases of police violence: the Adama Traoré Case, the Theo Luhaka Case, and the Michel Zecler Case. Following the model of Norman Fairclough’s Critical Discourse Analysis, the point of this thesis is to find whether the power relations regulating the world can be identified within these discourses. By analysing the articles and finding similarities in how they portray the events then an idea of the institutional and societal power relations in France.
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Lopez, Pedersen Maria Erliza. "Beyond the Cultural Horizon- A study on Transnationalism, Cultural Citizenship, and Media." Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-21604.
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In many cases, the need to survive has been the reason for many individuals to leave their country and to start anew in a foreign land. Indeed, migration has played its role as one of the solutions to struggle against poverty among many migrants. Nevertheless, migration can also be an excellent way to improve or develop one’s linguistic, professional and cultural competencies. And one way of doing this is to be part of the au pair cultural exchange program. The interest to be an au pair as well as the interest to have an au pair has been the subject of colorful debates in Denmark, and pushing politicians to make an action due to reports of abuse by many host families. Where the au pair program will end up is still a question hanging up in the air. This study is about the journey of many young and educated Filipino migrants who have decided to embark on the au pair expedition. The theme is anchored on deprofessionalization and deskilling. Transnationalism, civic culture and cultural citizenship, and media are the central theories of the study. Feedback from the participants indicates that there is a need to shift the discussion and focus. It is also important that the au pairs’ knowledge and skills are recognized. The study recommends further research on how participatory communication can be utilized or applied to engage all the stakeholders: au pairs, host family, social organizations, sending and receiving countries, and mass media, in finding long term solutions. The ‘cultural exchange or cheap labor’ argument must not be ignored; however, debates should not be limited to this alone. Most of the au pairs are educated. Recognition of such qualifications must be done to create a new arena for discussions. Oftentimes, many au pairs themselves do not see this side of their background as something valuable. From a communication for development perspective, behaviour change- the au pairs should not see themselves as domestic workers, but as educated migrants, and this must be promoted and advocated, so that au pairs and members of the host society can acknowledge this unknown aspect of these unsung migrants. They are education migrants; it is only right and logical that the au pairs are supported to enhance their qualifications. Deprofessionalization and deskilling must be avoided.
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Fang, Jia. "Study of Liquid Drop Migration on Fibers and Mats due to Liquid Flow in a Thin Slit Geometry." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1446730097.
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Cholewo, Hanna. "Kris eller konstruktion? : En studie i mediegestaltning av immigrationen i Sverige hösten 2015." Thesis, Uppsala universitet, Historiska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-376202.
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Uppsatsen är en studie i samtidshistoria. Den ämnar undersöka vad som uttrycktes på ledarsidorna i dagspressen om immigrationen hösten 2015, under månaderna som föregick och avslutades med regeringens beslut om återinförandet av gränskontroller den 12e november 2015. Undersökningen sträcker sig över sex månader från första juni 2015 till sista november 2015, och de valda publikationerna för undersökningen är Dagens Nyheter (DN) och Svenska Dagbladet (SvD). Syftet är att ta reda på hur immigrationen i Sverige gestaltades i dagspressen genom att undersöka vilka problem, orsaker, värderingar och lösningar som är omskrivna.
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Nordkvist, Öman Emma. "Tourism in an era of migration : A case study with a focus on the impacts of a crisis, from a consumer perspective." Thesis, Linnéuniversitetet, Institutionen för organisation och entreprenörskap (OE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-48843.
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This thesis describes the relation between the tourism industry and crisis from a consumer perspective. The impacts on consumers have been receiving little attention in earlier tourism research. This study contains an empirical research with a focus on the attitudes of travellers during the refugee crisis of 2015. The attitudes are seen as interesting for this study since they can affect the traveller before, during and after the trip. In this work the attitudes further are divided into four different sub-categories, which were detected to be important in order to describe how the attitudes of travellers can be affected from a crisis. The performed study shows that the attitudes can be affected from a crisis in different ways. It also shows that the refugee crisis of 2015 had impacts on travellers, that might vary from person to person and that they might not be aware of themselves.
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Günther, Marga. "Adoleszenz und Migration : Adoleszenzverläufe weiblicher und männlicher Bildungsmigranten aus Westafrika." Wiesbaden : VS Verlag für Sozialwissenschaften, 2009. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=017112996&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Naum, Magdalena. "Homelands lost and gained : slavic migration and settlement on Bornholm in the early middle ages /." Lund : Univ, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=017353557&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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