FLN et OAS: deux terrorismes en guerre d'Algérie

Au cours de la dernière guerre coloniale de son histoire, la France a eu à affronter de multiples sources de terrorisme. Cet article se propose d'étudier et de comparer les actions terroristes des deux principaux groupes y ayant eu recours: le Front de Libération Nationale et l'Organisation Armée Secrète. La comparaison permet de saisir les liens entre le terrorisme et les autres modes d'expression politique, d'une part, et de saisir les enjeux d'une telle violence en contexte colonial, d'autre part, en observant, en particulier, les manières dont l'Etat français y a répondu.     

Chemical evolution of metamorphic fluids in the Central Alps,Switzerland: insight from LA‐ICPMS analysis of fluid inclusions

The chemical evolution of fluids in Alpine fissure veins (open cavities with large free‐standing crystals) has been studied by combination of fluid inclusion petrography, microthermometry, LA‐ICPMS microanalysis, and thermodynamic modeling. The quartz vein systems cover a metamorphic cross section through the Central Alps (Switzerland), ranging from subgreenschist‐ to amphibolite‐facies conditions. Fluid compositions change from aqueous inclusions in subgreenschist‐ and greenschist‐facies rocks to aqueous–carbonic inclusions in amphibolite‐facies rocks. The fluid composition is constant for each vein, across several fluid inclusion generations that record the growth history of the quartz crystals. Chemical solute geothermometry, fluid inclusion isochores, and constraints from fluid–mineral equilibria modeling were used to reconstruct the pressure–temperature conditions of the Alpine fissure veins and to compare them with the metamorphic path of their host rocks. The data demonstrate that fluids in the Aar massif were trapped close to the metamorphic peak whereas the fluids in the Penninic nappes record early cooling, consistent with retrograde alteration. The good agreement between the fluid–mineral equilibria modeling and observed fluid compositions and host‐rock mineralogy suggests that the fluid inclusions were entrapped under rock‐buffered conditions. The molar Cl/Br ratios of the fluid inclusions are below the seawater value and would require unrealistically high degrees of evaporation and subsequent dilution if they were derived from seawater. The halogen data may thus be better explained by interaction between metamorphic fluids and organic matter or graphite in metasedimentary rocks. The volatile content (CO₂, sulfur) in the fluid inclusions increases systematically as function of the metamorphic grade, suggesting that the fluids have been produced by prograde devolatilization reactions. Only the fluids in the highest grade rocks were partly modified by retrograde fluid–rock interactions, and all major element compositions reflect equilibration with the local host rocks during the earliest stages of postmetamorphic uplift.     

National Planning Systems Between Convergence and Incongruity: Implications for Cross-Border Cooperation from the German–Polish Perspective

Convergence of national planning systems in Europe has become an important issue in the context of transnational and cross-border planning, which in turn plays a key role in the policy of creating a cohesive European space. Converging trends concerning planning styles and structures may undoubtedly be detected and also include new European Union (EU) member countries. Yet, by a minute's inspection of the (long-established) German and of the (created in the run-up to EU membership) Polish planning system from a cross-border planning perspective, it becomes obvious that similar structures may not coincide with a similar idea of what spatial planning is about. As highlighted by two chosen examples—cross-border twin-city and metropolitan planning—this results in significant hindrances for planning cooperation in its own right. The article concludes that any convergence of planning systems—if it was to have a constructive impact on cross-border planning—needs to be based on the acceptance of joint planning standards, objectives and values.     

Cultural development: a new policy paradigm in the cultural policies of the 1970s in Québec

The common expression of ‘cultural development’ appears in many cultural policy statements without it necessarily arousing questions about its precise meaning. Indeed, we usually spontaneously associate ‘cultural development’ to any governmental intervention that aims at stimulating cultural vitality. However, if we look more closely at the origin of this concept, we soon discover that its appearance on the eve of May 68, in France, corresponds to the rise of new concerns in cultural policy matters and to a radical redefinition of the state’s role in this domain. Still enjoying a strong influence, France’s political transformations were closely followed by some Quebecois politicians and socially engaged intellectuals who were participating, at that time, in the formulation of a new political vision in cultural matters in Québec in the 1960s and 1970s. The objective of this paper is thus to retrace the origin of the idea of cultural development and follow its evolution in Québec.