Université de Fribourg

A novel approach to estimate glacier mass balance in the Tien Shan and Pamir based on transient snowline observations

Barandun, Martina ; Huss, Matthias (Dir.)

Thèse de doctorat : Université de Fribourg, 2018 ; no 2099.

Glaciers are recognised as an excellent proxy for climate change and their centennial massloss has accelerated during the past decades. The Central Asian mountain ranges Tien Shan and Pamir host over 25,000 glaciers that have been observed to respond heterogeneous to climate change. Glacier changes in the region have very important consequences on the water availability for the densely populated...

Université de Fribourg

Luttes de conceptions entre ONG internationales et communes autour des projets d'accès à l'eau potable au Bénin

Anziani-Vente, Morgane ; Graefe, Olivier (Dir.)

Thèse de doctorat : Université de Fribourg, 2017 ; n⁰ 2055.

This research studies the relations between international non-governmental organizations (INGOs) and local governments during the implementation of water projects to enlighten the inequalities in their partnerships that curb development initiatives. Also, the research aims to understand the impact of these power relations on the management of the public service of water. The power relations...

Université de Fribourg

The Invisible Processes Of Urban Design : A Qualitative Investigation Into The Dynamics Of Collective Decision-Making In Urban Development And Their Potential for Spatial Quality

Loepfe, Matthias ; Van Wezemael, Joris (Dir.)

Thèse de doctorat : Université de Fribourg, 2014 ; no 1844.

In recent decades, the urban landscape of Switzerland has changed drastically and is now in sharp contrast to the ideals of planners and urban designers, such as the compact form of the Historical European City. Especially for the agglomeration areas, the call for a re-qualification of the built environment is strong, where spatial quality is still low from a planning and urban design viewpoint....

Université de Fribourg

The evolution of mountain permafrost in the context of climate change : towards a comprehensive analysis of permafrost monitoring data from the Swiss Alps

Staub, Benno ; Delaloye, Reynald (Dir.)

Thèse de doctorat : Université de Fribourg, 2015 ; no. 1949.

In the Swiss Alps, permafrost occurs discontinuously and commonly has a temperature close to 0 °C. A reduction of Alpine permafrost area and volume is expected in the course of atmospheric warming, but to date, limited evidence is available for Alpine permafrost degradation. Permafrost warming or thaw is accompanied by structural changes in the subsurface, which endanger infrastructure by...

Université de Fribourg

Effets de la circulation d'air par effet de cheminée dans l'évolution du régime thermique des éboulis froids de basse et moyenne altitude

Morard, Sébastien ; Delaloye, Reynald (Dir.)

Thèse de doctorat : Université de Fribourg, 2011 ; no 1732.

In the Swiss Alps, mountain permafrost – subsurface materials remaining at negative ground temperatures throughout the year – is encountered discontinuously above about 2300 m.a.s.l. Nevertheless, abnormally cold ground conditions indicating possible occurrence of isolated permafrost patches have been reported in many locations at much lower elevation where the mean annual air temperature is...

Université de Fribourg

Mechanical stability and growth performance of trees

Lundström, Tor ; Stoffel, Markus (Dir.)

Thèse de doctorat : Université de Fribourg, 2009 ; no 1644.

Trees’ mechanical stability is essential for the benefits provided by forests including wood and pulp products, specific ecosystems, recreation areas for people, and protection against natural hazards. Since tree growth depends on the environment in which the tree grows, it is possible to influence the mechanical stability of trees and forests. Different forest management strategies affect the...

Université de Fribourg

Le rappresentazioni della marginalità e la marginalità rappresentata : il rapporto fra Ticino e la nazione secondo le percezioni delle elites ticinesi

Patelli, Samuele ; Leimgruber, Walter (Dir.) ; Jenny, Titus (Codir.)

Thèse de doctorat : Université de Fribourg, 2009.

The present study is based on a few fundamental concepts and dedicated to a particular territory: marginality, representations, and the relations between Ticino, the central authorities of the Swiss Confederation and the majority population of Switzerland. Marginality is a phenomenon that has always existed and will always exist. It is scale related and depends on the relationships between...