Thèse de doctorat : Université de Fribourg, 2005 ; no 1498.
Cities in France have known some very important changes since the beginning of the 20th century. Their growth is only a part of this development, as the main transformations are related to their forms and organisations. As new forms of urban living appear, new tools are developed to follow and understand the cities changes, and help to define them. Remote sensing is not properly speaking a new...
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Thèse de doctorat : Université de Fribourg, 2006 ; no 1530.
Allergic rhinitis as well as associated costs are constantly increasing, affecting a proportion always larger of the population across the world. Ragweed is a source of pollen well known for its high allergenic properties. Characterized by heavy emissions of the pollen in the air from August to October of each year, its allergenic potential is greatly enhanced. This study deals with the problems...
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Thèse de doctorat : Université de Fribourg, 2006 ; no 1531.
In urban design and planning, one can observe since 20 years the emergence of discourses about new territories. The traditional attitude considers the city as its exclusive object of reference and fosters the urban containment, in order to prevent sprawl. The one relative to new territories refuses to ignore this phenomenon and investigates new analytical and prospective approaches. Despite its...
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Thèse de doctorat : Université de Fribourg, 2004 ; no 1441.
The main objective of this thesis is the identification of mechanisms controlling the occurrence and the evolution of mountain permafrost in peripheral areas, i.e. where the presence of permafrost is strongly discontinuous, isolated, or even uncertain. This area has not been greatly studied so far. As investigations relating to the effects of climate warming on the alpine environment multiply,...
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Thèse de doctorat : Université de Fribourg, 2001 ; no 1357.
Weather radars are now available in many countries for operational observations and measurements of hailstorms and provide detailed information on the formation and structure of severe thunderstorms. Much research has been devoted to the quantitative measurement of hailfalls and the nowcasting of hail-bearing thunderstorms which is of interest for national weather services and airports (warning),...
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Thèse de doctorat : Université de Fribourg, 1999 ; no 1257.
The goal of this study was to determine the factors controlling the settlement and the growth of the coral-dominated reefs in the Oxfordian of the Swiss Jura Mountains, and to analyse how eustatic, climatic and trophic variations are recorded. These reefs developed on a relatively wide and very shallow sub-tropical platform, influenced by periodic siliciclastic input. The coral composition is...
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Thèse de doctorat : Université de Fribourg, 2003 ; no 1416.
The Jura Molasse, in which most remains of the studied Rhinocerotoidea remains were found, constitutes a well preserved distal part of the Molasse Basin. This sedimentary series covered a major part of the Jura chain during the Oligocene and Miocene. Today, it is only sporadically found trapped in valleys or preserved in karst fillings. During the Oligo-Miocene period, the Jura region was...
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Thèse de doctorat : Université de Fribourg, 2002 ; no 1375.
In the distal part of the Swiss Molassic basin, a typical foreland basin, the Jura Molasse is trapped within different synclines. This study focused on the paleogene deposits present in these synclines and as well as in the south border of the Graben. All formations mentionned in the literature were identified and a hiearchy was established. Each formation was defined and fixed on the...
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Thèse de doctorat : Université de Fribourg, 2002 ; no 1380.
A detailed sedimentological, sequential and cyclostratigraphic interpretation of the Kimmeridgian in the Swiss Jura defines the principal factors which control the different stages in the development of a shallow-water carbonate platform. A comparative study in the Vocontian Basin reveals their impact on hemipelagic and pelagic sedimentation. The sedimentary facies of three platform sections –...
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Thèse de doctorat : Université de Fribourg, 1999 ; no 1281.
Economy and territory are interdependent elements of the regional development process. These two components, indissociable from a region’s economic development, are taken into account in recent theories of regional science. Yet, after closer examination, the operational concepts developed in these theories prove to be limited. Although territory is perceived as having multiple aspects,...
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