Walnut Anthracnose is among the major diseases of walnut trees in Qazvin Province which is scattered as an epidemic disease in the recent years. This research is designed to study and comparison of control methods of Anthracnose disease in walnut trees of Roodbar region. After selecting the infected garden and implementing winter and spring spraying treatments, winter spraying treatment and con...

geographical information systems and computer cartography geographical information systems and computer cartography geographical information system computer cartography geographical information systems and computer cartography introduction to cartography and geographical information thematic cartography geographical information systems geographical information systems (gis) recent directions an...

Different types of sediment trap have been introduced so far to be used in erosion measuring stations, each with its own advantages and disadvantages in trapping aeolian particles. These traps have different collection and retention efficiency due to aerodynamic conditions. Some characteristics such as isokinetic feature of the trap, collection efficiency, time needed to download sediment, capa...

This article presents the Varenius perspective on the societal dimensions of geographical information technologies and the geographical dimensions of information technologies in general, and puts them in the context of the research literature of the last ten years. The central themes examined are: theoretical perspectives on the societal implicationsof geographical information technologies; the...

Information about places is ubiquitous in the study of history, events occur, people live, and phenomena flourish in more or less identifiable locations. To a greater or lesser extent, all historians make use of geographical information. Potentially, there is a great potential for the use of Geographical Information Systems (GIS) in the discipline. However, GIS with origins in the earth science...

This paper provides an introduction to Geographical Information Systems (GIS) and how they can be used. It reviews the current state of GIS use in health care before identifying the barriers to more pervasive use of GIS in health. Finally, it makes recommendations for the direction of health GIS research over the next decade and concludes with a call to action to health informatics researchers ...