Excursion to Battle and Hastings: Easter Monday and Tuesday,April 10th and 11th     

W. Topley 《Proceedings of the Geologists' Association. Geologists' Association》1882,7(6):356-359

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Excursion to Bristol: Monday,August 16th,and Five Following Days     

《Proceedings of the Geologists' Association. Geologists' Association》1880,6(8):396-402

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Spatial pattern and patchiness during ontogeny: post-settled Gadus morhua from coastal Newfoundland     

Methven  David A.; Schneider  D. C.; Rose  George A. 《ICES Journal of Marine Science》2003,60(1):38-51

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基于GIS交通网络的室内3维网络模型研究     

徐效波  吴华玲  郭先春  罗艳 《测绘软科学研究》2012,(2):61-64

在2维交通网络逻辑数据模型基础上,讨论了概念化的楼层网络,进行了室内连通的3维网络模型的研究。基于ArcGIS的交通网络模型建立了试验区的室内3维网络模型．并给出分析结果,该方法为室内3维网络模型研究提供了技术支持。  相似文献   

G. Stanley Hall,Child Study,and the Teaching of Geography     

《The Journal of geography》2012,111(1):3-9

Abstract

G. Stanley Hall (1844-1924), founding president of Clark University, was a leader in the child study movement and a significant figure in psychology and education in the late nineteenth and early twentieth centuries. Hall had pronounced opinions on many educational subjects, including the teaching of geography. His criticisms and program for the reform of school geography were based on a mix of European ideas of heimatkunde or “home geography,” developmental or “genetic” psychology, and his work in the child study and nature study movements. This article traces Hall's involvement with geographic pedagogy from the 1880s through World War I, including his sponsorship of the first American Ph.D. dissertation in the teaching of geography, completed at Clark in 1906.  相似文献   

Re-identification of G35.6−0.4 as a supernova remnant     

D. A. Green 《Monthly notices of the Royal Astronomical Society》2009,399(1):177-180

G35.6−0.4 is an extended radio source in the Galactic plane which has previously been identified as either a supernova remnant or an H  ii region. Observations from the Very Large Array Galactic Plane Survey at 1.4 GHz with a resolution of 1 arcmin allow the extent of G35.6−0.4 to be defined for the first time. Comparison with other radio survey observations show that this source has a non-thermal spectral index, with   S ∝ν^{−0.47±0.07}  . G35.6−0.4 does not have obvious associated infrared emission, so it is identified as a Galactic supernova remnant, not an H  ii region. It is  ≈15 × 11 arcmin²  in extent, showing partial limb brightening.  相似文献   

泥石流类型与地貌分形特征的关系研究   总被引：1，自引：0，他引：1  

张妮  梁收运  钟秀梅 《工程地质学报》2010,18(5):664-668

泥石流是一种频繁发生且危害性很大的自然灾害。作为中国泥石流灾害重灾区之一的陇南地区,泥石流不仅严重阻碍G212线的正常运营,也严重影响沿线地区的经济发展和人民生活。通过对G212线陇南段232条泥石流沟的调查资料分不同属性、不同发展阶段和不同危害程度进行统计,结合分形理论,分析了泥石流沟道数与地貌要素的定量关系。结果表明:地貌形态要素对泥石流的属性、发展阶段和危害程度等不同类型泥石流的影响程度不同;综合分维值、形成区形态参数和地形坡度等参数都在一定程度上定量反映了不同类型泥石流的特征。  相似文献   

Discovery of extensive optical emission associated with the X-ray bright, radio faint Galactic SNR G156.2+5.7     

Christopher L. Gerardy  Robert A. Fesen 《Monthly notices of the Royal Astronomical Society》2007,376(3):929-938

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Deep optical observations of the interaction of the SS 433 microquasar jet with the W50 radio continuum shell     

P. Boumis  J. Meaburn  J. Alikakos  M. P. Redman  S. Akras  F. Mavromatakis  J. A. López  A. Caulet  C. D. Goudis 《Monthly notices of the Royal Astronomical Society》2007,381(1):308-318

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Recognition of the hydrogeological potential using electrical sounding in the Khemisset-Tiflet region,Morocco          下载免费PDF全文

Fatima Zahra FAQIHI  Anasse BENSLIMANE  Abderrahim LAHRACH  Mohamed CHIBOUT  Mohamed EL MOKHTAR 《地下水科学与工程》2020,8(2):172-179

The low recharge of reservoirs and the increasing demand for water limit the potential of mobilized resources, especially in arid to semi-arid areas like Morocco. Integrated management is essential to safeguard this resource. In respect with this perspective, this work provides the analysis of hydrogeological potential of Khemisset-Tiflet region, which falls within the action area of the Sebou Hydraulic Basin Agency. The basis of our studies was as follows:(1) The interpretation of the existing geoelectric data;(2) application of geophysical methods for non-destructive reconnaissance and their integration into a Geographic Information System(GIS). The analysis demonstrates that: The map of the isohypses and the geoelectric cross-section of the substratum of the superficial roof aquifer show clearly a plunge associated with development of the Paleozoic roof in the South and the direction of flow of the surface water is from south to north, from the upper zone to the north of the El Kansera dam. These conclusions constitute very useful contribution for any resource management projects in this area.  相似文献