Cyclostratigraphy Data as a Proxy for Geoelectrical Data Interpretation: Application to Phosphate Minerals Exploration in Matam (Senegal)

The vertical electrical soundings on the Matam region phosphates deposits are interpreted by inversion. To retrieve lithology from the obtained resistivities, mechanical drilling was performed to compare directly the lithologies and the geoelectrical resistivities. The obtained relation is not simple and is not sufficient to interpret all the VES. This situation motivated the collection of supplementary information from cyclostratigraphy. Geoelectrical and cyclostratigraphic?information is combined using fuzzy logic techniques to build a fuzzy inference system. The obtained results seem to be consistent with the stratigraphy of the investigated region and allow retrieving lithological succession. Further investigations are necessary for more accurate thickness determination.

从文件结构演化看电子文件数据化管理的发展——基于技术变迁的视角

随着信息技术的飞速发展,文件结构在技术变迁中不断演化,从纸质文件的物理结构与逻辑结构的统一到数字时代电子文件结构的二重性再到数据时代电子文件结构的数据化,这种演变催生了数据时代的数据化管理思维,迫使我们将管理聚焦于构成文件的数据,而不是文件本身。数据时代电子文件结构的数据化发展有利于降低电子文件的系统依赖性,更有利于利用电子文件数据进行数据挖掘与数据分析。文件结构演变的同时也解构了原有的概念体系,如文件概念的弱化与异化,元数据概念的强化与拓展等。