Search results for " transition"
showing 10 items of 2751 documents
Les pratiques sportives dans la perspective d'un quartier durable
2013
This paper aims to better understand the role of physical activity in social durability. The empirical study concerns sport and recreational activity among inhabitants of a popular urban district. The exploration, at the same time, of gender and generational categories, shows a large discrepancy between the two groups which stops only at 60 years old. This territorial specificity, referring to European and global French data, enhances a resilience point that can support the role of the actors of sport movement in reinforcing the district social durability.
Ancrage résidentiel et déplacements de proximité à la Fontaines d'Ouche
2013
By studying residential and daily mobilities of the Fontaine d'Ouche inhabitants, we seek to measure their settling in the neighborhood. By the analysis of a questionnaire which concerned 407 individuals, we will treat this issue in two ways: residential anchor and proximity movements.
Évolution du modèle inductif de résilience : intégration des variables réactives et proactives dans un modèle d'inférence de la dynamique de résilien…
2013
Dans la littérature scientifique (Adger, 2000 ; Dauphiné et Provitolo, 2004 ; Rose, 2007 ; Kuhlicke et Steinführer, 2010 ; Miller et al., 2010 ; Quenault et al., 2011), le développement des approches systémiques de la résilience centrées sur les systèmes socio-écologiques complexes tentent de réconcilier les dimensions physiques et sociales de la résilience, par une lecture croisée des travaux de la Résilience Alliance (Holling, 2001 ; Folke et al., 2002 ; Gallopin, 2006) associée au modèle inductif de la résilience ESO (Woloszyn, 2012). Dans le but d'offrir une flexibilité structurale de la lecture des systèmes de résilience aux interactions avec de chacun des pôles environnementaux du dév…
Perspectives du projet de recherche concerté de INTI (The main guidelines of the INTI project)
2013
Inteligencia Territorial y Transición Socio-Ecológica
2011
Este artículo defiende que la definición de la inteligencia territorial que se propone desde la European Network of Territorial Intelligence (ENTI) satisface desde su origen los desafíos actuales del desarrollo. El primer apartado expone estos desafíos en el marco de la transición socio-ecológica. El segundo apartado argumenta que la inteligencia territorial constituye una respuesta científica a estos desafíos, estableciendo las diferencias con otros conceptos como “inteligencia económica” o “desarrollo comunitario”. Finamente, en la tercera parte, se presentan los ejes y las herramientas operativas de inteligencia territorial que propone ENTI, se discuten los progresos realizados y se resu…
Pressure-induced hysteresis in the high spin \leftrightarrow low spin transition in bis(2,4-bis(pyridin-2-yl)thiazole) iron(II) tetrafluoroborate
2008
Studies of the spin transition behavior of the mononuclear compound [Fe(pythiaz)2](BF4)2 have been carried out under hydrostatic pressures up to 9.13 kbar in the 5–300 K temperature range. Under ambient pressure this compound exhibits an approximately half-step (incomplete) HS ↔ LS transition with T1/2 = 146 K without any thermal hysteresis. At pressures up to 4.5 kbar the behavior remains similar but with an upward displacement of T1/2 and a slight decrease in the residual high spin fraction at low T . Application of higher pressures resulted in an almost complete two-step spin transition with several unusual pressure effects. Along with the expected pressure dependence of T1/2 the surpris…
catena-[µ-Tris(1,2-bis(tetrazol-1-yl)ethane-N4,N4')iron(II)] bis(tetrafluoroborate): synthesis, structure, spectroscopic and magnetic characterizatio…
2002
In analogy to a common synthesis of 1-substituted 5-H tetrazoles (Tetrahedron Lett. 36 (1995)1759; Beloruss. Gos. Univ., Minsk, USSR. Khim. Geterotsikl. Soedin. 11 (1985) 1521; Beloruss. Gos. Univ., Minsk, USSR. Khim. Geterotsikl. Soedin. 1 (1991) 66; BGU, Belarus. Vestsi Akad. Navuk Belarusi, Ser. Khim. Navuk 1 (1992) 73), the new bidentate ligand 1,2-bis(tetrazol-1-yl)ethane [endi] was synthesized and characterized by X-ray diffraction, NMR, IR and UV–Vis spectroscopy. By using iron(II) tetrafluoroborate hexahydrate the complexation with this ligand yields a 1-dimensional linear coordination polymer similar to the recently published chain compound (Inorg. Chem. 39 (2000) 1891) exhibiting …
Study of Tetragonal Phase in 0.4Na1/2Bi1/2TiO3-(0.6-x)SrTiO3-xPbTiO3Solid Solutions by Second-Harmonic Generation
2015
Description of the local symmetry of relaxor ferroelectrics, especially in connection with nature of polar nanoregions, is one of the key questions in research of relaxor ferroelectrics. Unlike such well-known relaxor ferroelectrics as PbMg1/3Nb2/3O3 and (Pb,La)(Zr0.65Ti0.35)O3, ternary solid solutions 0.4Na1/2Bi1/2TiO3-(0.6-x)SrTiO3-xPbTiO3 show clear coexistence of phases of tetragonal and cubic symmetry, which is established by x-ray diffractometry. Since the second-harmonic generation spectroscopy is a sensitive tool in determination of deviation from symmetry, containing a centre of inversion, it is used as an additional method in characterization of structure in 0.4Na1/2Bi1/2TiO3-(0.6…
Crystal growth and phase transitions of solid solutions in [N(CH3)4]2MX4 isomorph class
1989
Abstract Homogeneous single crystals of tetramethylammonium tetrahalogenometallate solid solutions have been grown: a temperature difference growth method with thermally enforced convection was used during the material transport from an equilibrated feed material to the growing crystals. The smallest crystals were mostly studied by differential scanning calorimetry and X-ray crystallography. Some bigger crystals were available for dielectric measurements and Raman scattering. The temperature-concentration phase diagrams of solid solutions look like the temperature-pressure phase diagrams of pure tetramethylammonium salts. The progressive substitution seems equivalent to a change of the pres…