<p>I denna uppsats undersöks på kvartalsbasis de ekonomiska effekterna av två välkända</p><p>instrumentregler för Sverige under perioden 1993–2005. Dessa är: Taylor- respektive</p><p>McCallumregeln. Instrumentet som används i Taylorregeln är den korta styrräntan. McCallumregeln</p><p>innehåller ett annat instrument för centralbanken, långräntan. För att kunna utvärdera Taylorrespektive</p><p>McCallumregeln skattas en makromodell. Makromodellen består av två ekvationer, en för</p><p>aggregerat utbud och en för aggregerad efterfrågan. Skattningarna för makromodellen används sedan</p><p>för att simulera effekterna på produktionsgapet och inflationen av en penningpolitik betingad på</p><p>Taylor- respektive McCallumregeln. Slutligen används de simulerade värdena för produktionsgapet</p><p>och inflationen under respektive regel för att beräkna en samhällsekonomisk förlustfunktion.</p><p>Resultaten av simuleringarna och förlustfunktionerna tyder på att en tillämpning av Taylorregeln</p><p>hade varit positiv för Sverige. Motsvarande resultat erhålles inte för McCallumregeln</p>

Microfluidic devices could find applications in many areas, such as BioMEMs, miniature fuel cells and microfluidic cooling of electronic circuitry. One of the important considerations of microfluidic device in analytical and bioanalytical chemistry is the dispersion of solute. In this study, we have developed an analytical solution, which considers the axial dispersion of a solute along the flow direction, to simulate convection and diffusion transport in a pressure driven creeping flow for a rectangular shape slit. During flow, the balance of competing effects of diffusion (especially cross-section diffusion) and convective diffusion in the flow direction are investigated. / Singapore-MIT Alliance (SMA)

Thesis (Ph.D.)--Ohio University, June, 2006. / Title from PDF t.p. Includes bibliographical references (p. 204-207)

This thesis is trying to find out whether the five studied countries, Portugal, Ireland, Italy, Greece and Spain would have avoided the economic crisis by having an independent central bank.The theory used for our study is the Taylor rule, using statistical data in order to count out the short-term nominal interest rate. Results are compared with the ECB nominal interest rate to see if the difference between the two rates is big. By looking at other macroeconomic data we will try to understand if the fiscal policy could have been conducted in a better way.The results we reached were varying. In the case of Ireland and Spain we could clearly see that a higher interest rate could have drastically altered the outcome, potentially avoiding the crisis. Regarding Italy and Portugal, the current crisis is more due to structural problems and not due to the level of the interest rate. Finally, we could see that Greece could have benefited from a higher interest rate. But we cannot definitely say that this has been the reason for the crisis since the Greek fiscal policy has been poorly conducted.

Magnetohydrodynamic (MHD) flows in annular channels are of great current interest due to experimental search for the so-called magnetorotational instability (MRI) which is important for astrophysical applications (accretion disk physics, magnetic dynamo effect). <p>The main point of MRI experiments is to study the stability of liquid metal rotating in an external magnetic field. Two different types of fluid rotation are proposed: Taylor-Couette flow between rotating coaxial cylinders and electrically driven flow in transverse magnetic field. The implementation of MRI experiments and explanation of experimental results requires a theoretical study of the equilibrium and the stability of MHD flow in an annular channel. This is one of the main tasks of present thesis.<p>For study of equilibrium Taylor-Couette and electrically driven flows, a numerical code is developed which is based on the finite difference scheme with Jacobi iterations. The structure of flows is calculated for different parameters of the experiment. Effect of the inertia on the rotation profiles is investigated in detail. The approximate analytical expressions are obtained for radial profiles of rotation that can be used for optimization of the experimental device for MRI investigation. Equilibrium Taylor-Couette and electrically driven flows are compared from the perspective of experimental studies of MRI.<p>The spectral stability of electrically driven flow is studied by solving the eigen-value problem. This study is performed in the frames of both ideal and dissipative MHD models. It is shown that electrically driven flow can be destabilized through the mechanism of MRI if fluid velocity exceeds some instability threshold, which is determined by non-axisymmetric modes. The obtained results are compared with available experimental data.<p>A general variational method is developed for the stability study of MHD flows of ideal compressible fluids. It is shown that the linearized dynamics of such fluids has an infinite set of invariants. A necessary and sufficient stability criterion can be obtained after inclusion of one or several such invariants in analysis. An analytical example is presented to confirm the fruitfulness of the developed method.

Ce travail utilise un modèle d'équilibre général dynamique et stochastique (DSGE) standard pour calculer la courbe de Taylor, mesurer ses mouvements et évaluer l'efficience de la politique monétaire pour les trois sous-périodes depuis la Grande Modération (l984T1-2010T1). Le but est d'apprécier le degré d'arbitrage auquel la Banque Centrale a été confrontée et l'efficacité de la politique monétaire suivie. Les résultats obtenus sont très pertinents pour la conduite de la politique monétaire. (i) Ils semblent indiquer un déplacement des points de performance vers les courbes d'efficience et un glissement de celles-ci vers l'origine. Toutefois, ce déplacement des points de performance ne s'est pas opéré dans la même direction. Sous la Grande Modération, le déplacement vers l'origine, dû à la réduction simultanée des volatilités de l'inflation et de la production, améliore significativement l'arbitrage pour la Banque Centrale, réduit fortement les pertes occasionnées et accroît l'efficience de la politique monétaire. Alors que pendant la Grande Récession post-2007, le déplacement du point de performance vers le coin Sud-Est détériore cet arbitrage, car, une faible réduction de la variabilité de l'inflation est réalisée au coût d'une forte variabilité de la production. Ce qui permet de conclure que certains choix de politique monétaire sont plus efficients que d'autres. (ii) Ils établissent également que le degré d'efficience de la politique monétaire est inversement lié à l'ampleur des chocs macroéconomiques aléatoires. Cette relation négative apporte une contribution majeure sur le débat relatif aux facteurs explicatifs de la Grande Modération et permet de montrer que tous les facteurs (good luck vs good policy) jouent un rôle important pendant la modération ou la récession économique. (iii) Et enfin, ils soulignent l'importance des gains d'efficacité, enregistrés par une politique monétaire agressive et crédible axée sur la maitrise de l'inflation, lesquels permettent d'anéantir les effets des chocs exogènes qui perturbent l'économie, surtout en période de crise lorsque l'instrument de politique monétaire devient quasi-inopérant. ______________________________________________________________________________ MOTS-CLÉS DE L’AUTEUR : Politique monétaire optimale, Grande modération, courbe de Taylor, courbe d'efficience, Arbitrage, modèle DSGE.

In pursuit of a just political order, Will Kymlicka has defended a liberal conception of multiculturalism. The persuasive appeal of his argument, like that of secular-liberalism more generally, is due to presenting liberalism as a neutral and universal political project. Utilizing Charles Taylor’s genealogy of ‘exclusive humanism’ in A Secular Age, this thesis attempts to re-read Kymlicka in order to make certain theological commitments in his work explicit. Here I argue that Kymlicka, in order to make his conception of multiculturalism plausible, relies on a theologically-thick and controversial humanism operating under secular conditions of belief. By committing himself to a particular conception of the human and specific conditions of belief, Kymlicka’s liberal multiculturalism is rendered provincially incoherent because it fails to treat in a neutral manner certain theological commitments.

Magnetohydrodynamic (MHD) flows in annular channels are of great current interest due to experimental search for the so-called magnetorotational instability (MRI) which is important for astrophysical applications (accretion disk physics, magnetic dynamo effect). <p>The main point of MRI experiments is to study the stability of liquid metal rotating in an external magnetic field. Two different types of fluid rotation are proposed: Taylor-Couette flow between rotating coaxial cylinders and electrically driven flow in transverse magnetic field. The implementation of MRI experiments and explanation of experimental results requires a theoretical study of the equilibrium and the stability of MHD flow in an annular channel. This is one of the main tasks of present thesis.<p>For study of equilibrium Taylor-Couette and electrically driven flows, a numerical code is developed which is based on the finite difference scheme with Jacobi iterations. The structure of flows is calculated for different parameters of the experiment. Effect of the inertia on the rotation profiles is investigated in detail. The approximate analytical expressions are obtained for radial profiles of rotation that can be used for optimization of the experimental device for MRI investigation. Equilibrium Taylor-Couette and electrically driven flows are compared from the perspective of experimental studies of MRI.<p>The spectral stability of electrically driven flow is studied by solving the eigen-value problem. This study is performed in the frames of both ideal and dissipative MHD models. It is shown that electrically driven flow can be destabilized through the mechanism of MRI if fluid velocity exceeds some instability threshold, which is determined by non-axisymmetric modes. The obtained results are compared with available experimental data.<p>A general variational method is developed for the stability study of MHD flows of ideal compressible fluids. It is shown that the linearized dynamics of such fluids has an infinite set of invariants. A necessary and sufficient stability criterion can be obtained after inclusion of one or several such invariants in analysis. An analytical example is presented to confirm the fruitfulness of the developed method.

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Title: Facebook girls, a qualitative study of social medias and Facebooks impact on young girlsNumber of pages: 32Author: Mirja LarssonTutor: Amelie HössjerCourse: Media and Communication studies CPeriod: Autumn 2010University: Division of Media and Communication, Department of Information and Media,Uppsala UniversityPurpose/aim: To discover any possible difference between young girls and older girls in their wayof using Facebook.Material/method: Personal interviews, literature, electronic sources, Internet sources.Main results: The younger girls are not as aware as the older girls of their exposure on Facebookand the possible down-sides of their frequent Facebook-usage. Young girls in general use Facebookas a source to form their identity.Keywords: Facebook, identity, young girls, Cooley, Elza Dunkels, Altman and Taylor