3,068 research outputs found
INFRASTRUTTURE E PAESAGGIO ALPINO. LâEREDITĂ SVIZZERA
Nella storia della costruzione della rete stradale, ferroviaria e autostradale svizzera Ăš possibile riscontrare, in diversi casi, unâattenzione particolare da parte del progettista e delle istituzioni al rapporto tra il manufatto e il territorio su cui esso incide. Dâaltra parte il paesaggio svizzero, prevalentemente montuoso, ha sempre sfidato la genialitĂ del costruttore, comportandosi come elemento rivelatore del suo approccio nei confronti del
contesto. In questa sede si intende ricostruire un filo conduttore che porta dai progetti di fine Ottocento ai grandi cantieri del secondo dopoguerra,
attraverso il susseguirsi di generazioni di progettisti che, incrociandosi nelle aule dei Politecnici di Zurigo e Losanna, hanno permesso unâevoluzione della cultura tecnologica, strutturale e architettonica.Si guarderĂ con attenzione anche al rapporto tra ingegneri e architetti, che ha
visto lâalternarsi di fasi di netta separazione degli ambiti di lavoro ad altri di fruttuosa collaborazione, osservando infine, negli esempi contemporanei, segni di una trasformazione e di una dilatazione delle rispettive competenze. Infine, ci si soffermerĂ su alcuni progetti recenti, nei quali il rapporto con il
paesaggio viene assunto coscientemente come dato progettuale, per unâoperazione che affida allâinfrastruttura non semplicemente una dimensione funzionale connettiva, ma anche una valenza formale ed espressiva
Environmental changes and the first Olympic Winter Games. Infrastructure projects for âChamonix 1924'
This paper investigates the infrastructure projects undertaken for the event initially known as the Semaine des sports dâhiver, which took place in Chamonix, France, from 25 January to 4 February 1924 and was later recognized as the first Winter Olympics. Although the already famous resort town was able to use its existing hotels to accommodate visitors and athletes, it also made a considerable investment in the construction of new sports infrastructure. Following an agreement signed just 9 months before the Games, these facilities included a large ice rink, a bobsleigh run and a ski jump. The project was entrusted to the Ponts et ChaussĂ©es engineers, who encouraged local firms to help with the construction. Archival analysis will be used to examine the relationship between the project and the changing environment. Our aim is to show how the work in Chamonix modified the environment by exploiting certain natural elements (e.g. water, soil and forests) and, conversely, how the natural (in particular, the geological and climatic) and historical (notably land ownership) components of the environment affected the execution of these works
Environmental History, The History of Tourism in the Mountains and the Construction of New Knowledge: A Study of the Architecture of Winter Sports Resorts in the French-Italian Alps
Environmental history is a rapidly developing field of study. In keeping with the ecological, energy and health issues that affect contemporary societies, it is important to understand the past by examining the interactions between human and natural factors. This interest is particularly evident in work on the Alps and mountains in general. Our contribution relates and adds to studies focused on the history of tourism in the Alps and assesses the capacity of environmental history to produce a renewed knowledge. Moreover, it investigates the specificity of the Alps and the mountains as a privileged field of study for environmental history. After outlining recent scientific output from around the world based on environmental history, we present the results obtained through a research experiment on the history of winter sports resorts in the French-Italian Alps. Understanding the relationships between the evolution of the projects and the natural and historical components of the sites where they are located and extending the spatial and temporal frameworks of the analyses and the use of multiple sources will clarify how tourism develops in high-altitude areas. Our work invites researchers to move beyond the image of infrastructure built âex nihiloâ or on so-called âvirginâ sites and a narrative limited to the period of the âTrente Glorieusesâ to reveal the dynamics of how a territory transforms over time
Magnetism and Superconductivity in the Two-Band Hubbard Model: A Variational Monte Carlo Perspective
Glomeruloid reactive angioendotheliomatosis in a woman with systemic lupus erythematosus and antiphospholipid syndrome mimicking reticular erythematous mucinosis
The umbrella term ââcutaneous reactive angioma- tosesââ was introduced in 2003 to include uncommon angioproliferative (capillary) cutaneous conditions, which present with variable clinical features and involve patients with a variety of underlying systemic conditions.1 Histologically, these disorders are char- acterized by different patterns of intravascular or extravascular lobular or diffuse hyperplasia of endo- thelial cells, pericytes, and, sometimes, histiocytes, mostly throughout the dermis.1 The first condition to be described was reactive angioendotheliomatosis (RAE), which is usually associated with prothrom- botic conditions.1 We report a case of RAE in its rare glomeruloid variant, occurring in a woman with systemic lupus erythematosus (SLE) and antiphos- pholipid syndrome (APS), which is notable because it mimics reticular erythematous mucinosis (REM)
Primary Localized Cutaneous Nodular Amyloidosis and Limited Cutaneous Systemic Sclerosis: Additional Cases with Dermatoscopic and Histopathological Correlation of Amyloid Deposition
Primary localized cutaneous nodular amyloidosis (PLCNA) is a rare condition due to the plasma cell proliferation and skin deposition of immunoglobulin light chains, without systemic amyloidosis or hematological dyscrasias. The association with autoimmune connective tissue diseases has been reported, especially with Sjogren's syndrome, and in a few cases with systemic sclerosis. Herein, we describe three cases of PLCNA occurring in women with a diagnosis of limited cutaneous systemic sclerosis and review the literature on the topic to highlight a stereotypical presentation. Moreover, we support the usefulness of dermoscopy, characterized by a yellow-orange waxy pattern surrounded by telangiectasias, for a rapid and non-invasive diagnostic assessment. Thus, when asymptomatic nodules occur on lower limbs of women affected with limited systemic sclerosis, and dermoscopy identifies yellow-orange blotches, a diagnosis of PLCNA can be considered and further confirmed by histopathology. Monitoring for systemic amyloidosis development is advisable, although the risk of progression is considered very low
La production dâun paysage par et pour le ski. Une histoire des stations de sports dâhiver dans les Alpes franco-italiennes, Ă travers lâĆuvre de lâarchitecte et urbaniste Laurent Chappis
La prĂ©sente contribution interroge, Ă travers un regard historique, les interrelations entre la conception des stations touristiques nouvelles et la transformation des paysages de haute montagne. En effet, la crĂ©ation des stations de ski ne sâest pas uniquement concrĂ©tisĂ©e par lâimplantation dâĂ©difices et dâinfrastructures en haute altitude. Tout au contraire, diverses composantes de lâenvironnement telles que la forĂȘt, la morphologie du sol, lâhydrographie ont Ă©tĂ© modifiĂ©es. Par ailleurs, les caractĂšres Ă la fois biophysiques et historiques des sites dâimplantation ont influencĂ© les processus de conception et de construction des stations de haute altitude. Nous adoptons comme angle dâobservation et comme fil conducteur le parcours professionnel de lâurbaniste et architecte Laurent Chappis (1915-2013), qui permet dâexplorer divers cas dâĂ©tude dans les Alpes franco-italiennes, Ă partir des annĂ©es 1940 et jusquâaux annĂ©es 1980. Nous voulons comprendre les mĂ©thodes et les outils empruntĂ©s par lâarchitecte dans la dĂ©finition des plans des stations, les Ă©lĂ©ments qui participent Ă la construction dâun paysage, lâĂ©volution Ă la fois de lâapproche de lâarchitecte et des plans. Par une relecture de lâhistoire, nous parvenons Ă une rĂ©flexion sur les rapports entre projet et environnement dans les terres de haute altitude
Histoire environnementale et histoire du tourisme en montagne : vers la construction d'une connaissance nouvelle ? Une Ă©tude de l'architecture des stations de sports d'hiver dans les Alpes franco-italiennes
Lâhistoire environnementale est un champ dâĂ©tudes en plein essor. En effet, la comprĂ©hension du passĂ© Ă la lumiĂšre des interactions entre facteurs humains et naturels est en phase avec les enjeux Ă©cologiques, Ă©nergĂ©tiques et sanitaires qui affectent les sociĂ©tĂ©s contemporaines. Cet intĂ©rĂȘt se retrouve notamment dans les travaux qui portent sur le territoire alpin et la montagne en gĂ©nĂ©ral. Notre contribution sâinscrit dans les Ă©tudes sur lâhistoire du tourisme dans les Alpes et met Ă lâĂ©preuve la capacitĂ© de lâhistoire environnementale Ă en produire une connaissance renouvelĂ©e. De plus, elle interroge la spĂ©cificitĂ© des Alpes et de la montagne comme terrain dâĂ©tude privilĂ©giĂ© pour lâhistoire environnementale. AprĂšs avoir retracĂ© le contour dâune production scientifique rĂ©cente et internationale qui se rĂ©fĂšre Ă lâhistoire environnementale, nous prĂ©sentons les rĂ©sultats obtenus par une expĂ©rience de recherche menĂ©e sur lâhistoire des stations de sports dâhiver dans les Alpes franco-italiennes. La comprĂ©hension des relations entre lâĂ©volution des projets et les composantes naturelles et historiques des sites dâimplantation, lâextension des cadres spatiaux et temporels des analyses et le recours Ă une multiplicitĂ© de sources permettent un nouvel Ă©clairage des processus de mise en tourisme des hautes terres. Notre travail invite Ă dĂ©passer lâimage des infrastructures construites « ex nihilo » ou dans des sites dits « vierges », et une narration limitĂ©e Ă la pĂ©riode des Trente Glorieuses, pour dĂ©voiler les dynamiques de transformation dâun territoire sur le temps long
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