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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Fem projekt och deras processer / Five projects and their Development Processes

Stockman, Bo January 2013 (has links)
Fem projekt och deras processer Projekten är ett urval av vad jag ritat under 15 år som praktiserande arkitekt. Avsikten är att belysa en del frågeställningar: Vad har varit de styrande faktorerna? Vad och vilka styr? Vilka var projektens bärande idéer? Projekt: - Ungdomens hus i Rinkeby. Nybyggnad. - Södertälje tingshus. Om-och tillbyggnad. - Radhus i Kv Kippinge, Hjulsta. Nybyggnad. - Rival, Mariatorget, Stockholm. Hotell, biograf och konferens. Om-och tillbyggnad. - Fritidshus på Skäret, Höganäs. Nybyggnad. / Five projects and their development processes The projects are a sampling of what I have designed over 15 years as a practicing architect. The intention is to highlight some questions: What has been the controlling factors? What and whom control? What were the projects supporting ideas? Projects: - Youth House (Ungdomens hus) in Rinkeby. New Construction. - Sodertalje courthouse. Reconstruction and extension. - Rowhouses in Hjulsta, Kv Kippinge. New Construction. - Rival, Stockholm. Hotels, cinema and conference. Reconstruction and extension. - Summerhouse in Höganäs. New Construction.
12

Solitary waves and enhanced incoherent scatter ion lines

Ekeberg, Jonas January 2011 (has links)
This thesis addresses solitary waves and their significance for auroral particle acceleration, coronal heating and incoherent scatter radar spectra. Solitary waves are formed due to a balance of nonlinear and dispersive effects. There are several nonlinearities present in ideal magnetohydrodynamics (MHD) and dispersion can be introduced by including theHall termin the generalised Ohm’s law. The resulting system of equations comprise the classical ideal MHD waves, whistlers, drift waves and solitarywave solutions. The latter reside in distinct regions of the phase space spanned by the speed and the angle (to the magnetic field) of the propagating wave. Within each region, qualitatively similar solitary structures are found. In the limit of neglected electron intertia, the solitary wave solutions are confined to two regions of slow and fast waves, respectively. The slow (fast) structures are associated with density compressions (rarefactions) and positive (negative) electric potentials. Such negative potentials are shown to accelerate electrons in the auroral region (solar corona) to tens (hundreds) of keV. The positive electric potentials could accelerate solar wind ions to velocities of 300–800 km/s. The structure widths perpendicular to themagnetic field are in the Earth’s magnetosphere (solar corona) of the order of 1–100 km (m). This thesis also addresses a type of incoherent scatter radar spectra, where the ion line exhibits a spectrally uniform power enhancement with the up- and downshifted shoulder and the spectral region in between enhanced simultaneously and equally. The power enhancements are one order of magnitude above the thermal level and are often localised to an altitude range of less than 20 km at or close to the ionospheric F region peak. The observations are well-described by a model of ion-acoustic solitary waves propagating transversely across the radar beam. Two cases of localised ion line enhancements are shown to occur in conjunction with auroral arcs drifting through the radar beam. The arc passages are associated with large gradients in ion temperature, which are shown to generate sufficiently high velocity shears to give rise to growing Kelvin-Helmholtz (K-H) instabilities. The observed ion line enhancements are interpreted in the light of the low-frequency turbulence associated with these instabilities. / Denna avhandling handlar om solitära vågor och deras roll i norrskensacceleration och koronaupphettning, samt deras signatur i spektra uppmätta med inkoherent spridningsradar. Solitära vågor bildas genom en balans mellan ickelinjära och dispersiva effekter. Ickelinjäriteter finns det gott om i ideal magnetohydrodynamik (MHD) och dispersion kan införas genom att inkludera Halltermen i den generaliserade Ohms lag. Det resulterande ekvationssystemet omfattar de klassiska vågorna inom ideal MHD, visslare, driftvågor och solitära vågor. De sistnämnda återfinns i väldefinierade områden i fasrummet som spänns upp av farten och vinkeln (mot magnetfältet) för den propagerande vågen. Inom varje sådant område återfinns kvalitativt lika solitära våglösningar. Om man försummar elektronernas tröghet begränsas de solitära våglösningarna till två områden med långsamma respektive snabba vågor. De långsamma (snabba) strukturerna är associerade med täthets-kompressioner (förtunningar) och positiva (negativa) elektriska potentialer. De negativa potentialerna visas kunna accelerera elektroner i norrskensområdet (solens korona) till tiotals (hundratals) keV medan de positiva potentialerna accelererar solvindsjoner till hastigheter på 300–800 km/s. Strukturbredderna vinkelrät mot magnetfältet är i jordens magnetosfär (solens korona) av storleksordningen 1–100 km (m). Denna avhandling tar även upp en typ av inkoherent spridningsradarspektra, där jonlinjen uppvisar en spektralt uniform förstärkning. Detta innebär att den upp- och nedskiftade skuldran och spektralbandet däremellan förstärks simultant och i lika hög grad. Effektförstärkningen är en storleksordning över den termiska nivån och är ofta lokaliserad till ett höjd-intervall av mindre än 20 km nära jonosfärens F-skiktstopp. Observationerna beskrivs väl av en modell med solitära vågor som propagerar transversellt genom radarstrålen. Två fall av lokaliserade jonlinjeförstärkningar visas sammanfalla med att norrskensbågar driver genom radarstrålen. I samband med bågarnas passage uppmäts stora gradienter i jontemperatur, vilket visas skapa tillräckligt kraftiga hastighetsskjuvningar för att Kelvin-Helmholtz-instabiliteter ska tillåtas växa. De observerade jonlinjeförstärkningarna tolkas i skenet av den lågfrekventa turbulensen som är kopplad till dessa instabiliteter.
13

"Resurs/hus/hållning" / "Asset/house/keeping"

Andersson, Joakim January 2013 (has links)
I syfte att bättre möta de verksamheter som bedrivs på gården Skärholmen 1:18 i Bohuslän har jag ritat ett förslag till en flexibel byggnad som i sitt utförande uteslutande använder sig av de materiella resurser som redan finns på platsen. / In order to better meet the activities carried out on the farm Skärholmen 1: 18 in Sweden, I have designed a proposal for a flexible building that in its execution exclusively use the material resources that already exist on the site.
14

Ochrana osobnosti z hlediska právní filozofie a platného práva / Protection of personality in scope of legal philosophy and applicable law

Němec, Ronald January 2013 (has links)
PROTECTION OF PERSONALITY IN SCOPE OF LEGAL PHILOSOPHY AND APPLICABLE LAW 1. Summary We can see law from two main perspectives. Law is either complex of written regulations, which are prepared by human beings based on some interests or it is a complex of rules, which altough are written, but its nature are originating from higher normative system. First is a present perspective. Current law science is prefering valid law as complex of regulations published in statute book. What is not banned by law, is allowed. Though this law philosophy is leading to instability in society. Every year legislator is making hundreds of amendements and create new laws to cover new circumstances which appear in the society. Despite legislator effort is society further unsatisfied with legal state. Society claims that law is enforceable for those who are able to hire big law firms, which can find neccesary grey areas. Immanuel Kant among the first draw a problem between legality and legitimacy. But it is not only matter of legislator whether he acts legitimately or legally, but as well as of receiver of law norm. Is every legal act of the recepient of the legal order of the Czech Republic legal as legitimate? Legal yes, if in conformity with legal order. But is it even legitimate? And is it moral? For juspositivism is...

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