Heterogeneity in hedonic modelling of house prices: looking at buyers’ household profiles   总被引：2，自引：0，他引：2  

Yan Kestens  Marius Thériault  François Des Rosiers 《Journal of Geographical Systems》2006,8(1):61-96

This paper introduces household-level data into hedonic models in order to measure the heterogeneity of implicit prices regarding household type, age, educational attainment, income, and the previous tenure status of the buyers. Two methods are used for this purpose: a first series of models uses expansion terms, whereas a second series applies Geographically Weighted Regressions. Both methods yield conclusive results, showing that the marginal value given to certain property specifics and location attributes do vary regarding the characteristics of the buyer’s household. Particularly, major findings concern the significant effect of income on the location rent as well as the premium paid by highly-educated households in order to fulfil social homogeneity.  相似文献   

Zircon U–Pb geochronology of Ordovician magmatism in the polycyclic Ruitor Massif (Internal W Alps)     

François Guillot  Urs Schaltegger  Jean-Michel Bertrand  Étienne Deloule  Thierry Baudin 《International Journal of Earth Sciences》2006,95(1):1-1

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Native Trees as Biomonitors of Chemical Elements in the Biodiversity Conservation of the Atlantic Forest   总被引：1，自引：0，他引：1  

Elvis J. De França  Elisabete A. De Nadai Fernades  Márcio A. Bacchi  Mitiko Saiki 《Journal of Atmospheric Chemistry》2004,49(1-3):579-592

The Atlantic Forest, a hotspot in the world with a great diversity of plants and animals, is located in the most industrialized area of Brazil, a potential source of chemical elements for the atmosphere. From its original area about 10% has been preserved mainly through the implementation of conservation units, among which the Parque Estadual Carlos Botelho (PECB) is one of the most representative. Here, leaves of the predominant species in the PECB were analyzed by instrumental neutron activation analysis (INAA) for the establishment of natural backgrounds of As, Ba, Br, Ca, Cd, Ce, Co, Cs, Fe, Hg, K, Na, Rb, Sc, Se, Sr and Zn. Biomonitoring of the Atlantic Forest was realized through the tree community study taking in account the interspecies and the intraspecies variability of chemical concentrations. Results pointed out the low status of pollution based on the concentrations of chemical elements of environmental concerning. However, Br concentrations were higher in the understory species, which could be related to the possible effects of atmospheric pollution or sea influence. In addition, some Hyeronima alchorneoides trees showed to be hyperaccumulators of Co.  相似文献   

Les surfaces boisées à l'échelle de la planète : usages conjoints pour la séquestration du carbone et la production d'énergie     

Anne Prieur  Jean-François Bonnet  Michel Combarnous 《Comptes Rendus Geoscience》2004,336(15):1323-1335

The role of forest ecosystems in the regulation of greenhouse effect at the global scale is developed here, from two points of view, sometimes considered as opposed: carbon storage and wood production for energy. A nomenclature is proposed to understand all the various mechanisms implied in carbon storage. A comparison is made between the effects on carbon emissions of storage alone and storage with wood fuel production. Use of wood energy is proved to be a ‘bonus’ that could optimise, in the middle and long terms, the use of fossil fuel reserves. To cite this article: A. Prieur et al., C. R. Geoscience 336 (2004).  相似文献   

${}^{18}\text{O}{}^{16}\text{O}$ ratios in Luna 16 fines     

Marc Javoy  Jacqueline Marette  Françoise Pineau 《Geochimica et cosmochimica acta》1973,37(9):2017-2019

Partial fluorination experiments developed on a 26 mg sample of Luna 16 fines show a big ¹⁸O enrichment in the first oxygen evolved similar to those observed by Epstein and Taylor on Apollo samples and probably related to the high solar wind content of this sample.  相似文献   

Improvement of an Extremely Highly Plastic Expansive Clay with Hydrated Lime and Fly Ash     

Süt Ünver  İnci  Lav  M. Ayşen  Çokça  Erdal 《Geotechnical and Geological Engineering》2021,39(7):4917-4932

Geotechnical and Geological Engineering - In this study, extremely highly plastic soil samples were collected from clay deposits in the Akyurt district of Ankara (Turkey), near Esenbo?a...  相似文献   

A proposal for an approach to mapping susceptibility to landslides using natural language processing and machine learning     

Rodrigues  Saulo Guilherme  Silva  Maisa Mendonça  Alencar  Marcelo Hazin 《Landslides》2021,18(7):2515-2529

Landslides - Compiling an inventory is a fundamental step for carrying out assessments of landslide hazards. However, data in sufficient quantity and quality are not always available. Thus, this...  相似文献   

Stress-dilatancy behaviour of a polymer-coated sand     

Liu  Deyun  Lourenço  Sérgio D. N. 《Acta Geotechnica》2021,16(2):647-652

Acta Geotechnica - Natural sands can be coated by substances of various origins, from natural to anthropogenic substances (from contamination or synthesized). Therefore, predicting the mechanical...  相似文献   

A Late Cretaceous ensimatic arc developed during closure of the northern branch of Neo-Tethys(central-northern Turkey)     

Metin Beyazpirin?  Ali Ekber Ak?ay  Ali Yilmaz  Meftun Kerem S?nmez 《地学前缘(英文版)》2019,10(3):1015-1028

Studies on differentiation of ensimatic arc units from melange units in the Northern Anatolian Ophiolitic Belt(NAOB) are very rare. The study area represents the southern edge of the central part of the NAOB.The aim of the study is to distinguish the main units of NAOB and to define the geotectonic setting of the Darmik Ensimatic Arc Association(DEAA). To study the ensimatic arc units as an independent tectonic unit is important and facilitates understanding of the geological evolution of the NAOB. During field studies, the contact relationships within the Darmik Ensimatic Arc Association(DEAA) units and also with other tectonic units were reviewed. Then, paleontological, geochronological, petrological and also geochemical properties of the DEAA have been defined. In the present study, ensimatic arc units have been distinguished from ophiolitic association for the first time, in the region. As a result of the study, the DEAA is divided into two levels and lower level named as the Kartal unit and upper level named as the izibüyük unit. In the Kartal unit, basaltic and andesitic lavas with their equivalent pyroclastic rock units are dominant. Radiolarite and mudstones interbedded within the Kartal unit of DEAA have Turonian and Santonian age. In addition, the age of basalt samples of DEAA are 98.7 ± 2.4 Ma, defined using the~(40)Ar/39 Ar method. The izibüyük unit of DEAA comprises conglomerate, sandstone, claystone, mudstone,clayey limestone, micritic limestone with volcanic interbeds and also calciturbidites. Santonian-Maastrichtian ages were obtained from this unit of the DEAA. In conclusion, the age of DEAA is widely accepted as Late Cretaceous. After the evaluation of the analysis, the volcanics of the DEAA originated from calcalkaline-basalts, which reflect ensimatic arc magmatism.  相似文献   

The contribution of marine magnetics in the Gulf of Saint-Malo (Brittany,France) to the understanding of the geology of the North Armorican Cadomian belt     

Jean-François Oehler  Marie-Françoise Lequentrec-Lalancette 《Comptes Rendus Geoscience》2019,351(1):1-9

Marine magnetic data extracted from the geophysical database of the SHOM (the French Hydrographic and Oceanographic Service) offer a first overview of the magnetic offshore environment in the Gulf of Saint-Malo (Brittany, France). Their cross-interpretation with available geological and geophysical knowledge provides a new land and sea model of the western part of the Late Proterozoic North Armorican Cadomian belt. In particular, marine data exhibit relatively intense and heterogeneous magnetic signatures, mainly interpreted as the offshore prolongation of plutonic, volcanic, and metamorphic geologic formations recognized onshore. Imprints of major faults well known on land can be inferred at sea from discontinuities and shifting of magnetic anomalies or followed by high-resolution bathymetry. An impressive and dense dolerite dyke swarm propagated on more than 50 km from the coast seaward. Dykes are characterized by both 1-km-deep and less than 50-m-deep superficial magnetic responses, suggesting the existence of deeply rooted super dykes to which individual small-scale structures are connected.  相似文献