Published: 15.02.2009
Articles
Geography and standards of metadata for electronic libraries: the maintenance, application, problems
Abstract:
IGeographical aspects of "not geographical" data in information systems are considered. It is shown, that practically all widespread schemes of metadata suppose job with the geographical coordinates reflecting geographical aspect of an information content of described object. The situation varies at the context description which geographical aspect can be presented only place names more often. Necessity of expansion of schemes of data is proved. Geographical services of electronic libraries (search, cataloguing, navigation) are discussed. As illustrations the structure of a server program complex is resulted, graphic user interfaces are shown.
Keywords:
электронные библиотеки, географическая привязка, схемы метаданных, географические сервисы информационных систем, поиск географической информации.
Development of web gis system aimed at statistical ahalysis of large archives of spatially distributed data to support complex research of enviromental changes
Abstract:
In this paper developed model of information-computational system for conducting scientific research based on statistical processing and analysis of spatially distributed geophysical data obtained as results of observations and modeling is presented. Accumulated experience of developing information-computational web-systems providing computational processing and visualization of large archives of geo-referenced data was used during the implementation. Functional capabilities of the model comprise a set of procedures of mathematical and statistical analysis, processing and visualization of data, which allows optimizing of routine calculation tasks. As one of applications of the system being developed program modules for analysis of regional features of main climatic characteristics dynamics and interrelations as well as for graphical representation of results as plots, diagrams and 3-D fields layered on maps of corresponding territories by means of Web GIS technologies were implemented.
Keywords:
information systems, web mapping technologies, spatially distributed data, meteorology, monitoring of environment, climate change.