Le développement de la géodésie et cartographie tchécoslovaque de 1945 a 1940     

Josef Ryšavý 《Studia Geophysica et Geodaetica》1960,4(2):119-129

Sans résumé En collaboration avec les membres de la rédaction: prof. Ing. Ján Krajčí, Dr. Ing. Karel Kučera et Dr. Ing. Jan Kašpar. Adresse: Národní tř. 3, Praha 1.  相似文献   

Der Chemismus oberdevoniseher Flaserkalke des Gaisberges bei Graz     

Dr. Josef Hanselmayer 《Contributions to Mineralogy and Petrology》1951,2(6):492-497

Ohne Zusammenfassung  相似文献   

A high quality low cost receiver for military sonobuoys     

Donald E. Koelsch  Frederick R. Hess 《Marine Geophysical Researches》1981,4(4):479-483

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Soft proton scattering efficiency measurements on x-ray mirror shells     

Sebastian Diebold  Chris Tenzer  Emanuele Perinati  Andrea Santangelo  Michael Freyberg  Peter Friedrich  Josef Jochum 《Experimental Astronomy》2015,39(2):343-365

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Distribution patterns of living benthic foraminifera from Cap Breton canyon,Bay of Biscay: Faunal response to sediment instability     

Silvia Hess  Frans J. Jorissen 《Deep Sea Research Part I: Oceanographic Research Papers》2009,56(9):1555-1578

Analysis of living (Rose Bengal-stained) benthic foraminifera in 13 multicorer samples taken along the Cap Breton canyon (Bay of Biscay) revealed that the combination of organic-rich material and sediment instability provides very specific benthic ecosystem conditions. The active canyon hosts different foraminiferal assemblages that appear to be determined by different types and frequencies of environmental disturbance at the sites. Most of them are strongly dominated by shallow-infaunal living taxa that combine a tolerance for low-quality organic matter with a high reproductive potential. Foraminiferal assemblages characterized by high densities, very superficially living taxa and strong dominance of bolivinids and buliminids, follow a poor pioneer fauna dominated by Technitella melo. These assemblages are observed in the narrow canyon axis, where frequent sediment resuspension occurs and affects habitat stability. Assemblages studied from sites outside the canyon axis are still dominated by shallow-infaunal species but show lower foraminiferal densities and higher diversities. Deep-infaunal taxa are only present in some inner meanders and more distal stations. These assemblages are typical for ecological niches that are relatively stable and unaffected by re-sedimentation processes. They have attained a more advanced stage of ecosystem stability. They are influenced by neither lateral sediment nor enriched organic matter input.  相似文献   

Evaluation on the accuracy of digital elevation models     

TANG Guo-an  Josef Strobl  GONG Jian-ya  ZHAO Mu-dan  CHEN Zhen-jiang 《地理学报》2001,11(2):209-216

There is a growing interest in investigating the accuracy of digital elevation model (DEM). However people usually have an unbalanced view on DEM errors. They emphasize DEM sampling errors, but ignore the impact of DEM resolution and terrain roughness on the accuracy of terrain representation. This research puts forward the concept of DEM terrain representation error (Et) and then investigates the generation, factors, measurement and simulation of DEM terrain representation errors. A multi-resolution and multi-relief comparative approach is used as the major methodology in this research. The experiment reveals a quantitative relationship between the error and the variation of resolution and terrain roughness at a global level. Root mean square error (RMS Et) is regressed against surface profile curvature (V) and DEM resolution (R) at 10 resolution levels. It is found that the RMS Et may be expressed as RMS Et = (0.0061 × V+ 0.0052) × R - 0.022 × V + 0.2415. This result may be very useful in forecasting DEM accuracy, as well as in determining the DEM resolution related to the accuracy requirement of particular application.  相似文献   

Bestimmung der durchgangszeiten von sternen durch die methode der unterbrechung der gesichtsfeldbelichtung     

Josef Kabeláč  Ivan Synek 《Studia Geophysica et Geodaetica》1964,8(2):120-126

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Zur Kristallehemie der Granate     

Zemann  Josef 《Contributions to Mineralogy and Petrology》1962,8(3):180-188

Zusammenfassung Einige Probleme der Kristallchemie besonders mineralogisch wichtiger Granate werden behandelt. Für den röntgenographischen Befund, daß die SiO₄-Tetraeder zu einem etwas gestreckten tetragonalen Disphenoid verzerrt sind, wir eine Erklärung gegeben. Die Stabilitätsverhältnisse der verschiedenen Granate werden vom Standpunkt der Kristallchemie unter wesentlicher Benützung der Wirkungsradien der Gitterbestandteile diskutiert.  相似文献   

Description of the growth of an isolated ice crystal on the basis of an analogy with an electrostatic field     

Josef Podzimek 《Studia Geophysica et Geodaetica》1968,12(2):206-216

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Verteilung der Fehlerwahrscheinlichkeiten in Ungleichartigen Kollektiven     

Josef Böhm 《Studia Geophysica et Geodaetica》1958,2(1):14-30

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