asian citrus psyllid, diaphorina citri kuwayama, is an important pest of citrus that transmits the bacterial pathogens responsible for citrus greening disease, also called huanglongbing. the aim of the current study was to investigate the shape variations of the forewing among the iranian geographic populations of d. citri, as well as one population from pakistan. the adult psyllids used in thi...

background: short golden time is important to save the injured in earthquake and to start search and rescue (sar) operation as soon as possible in affected regions. this study evaluated application of geographic information system (gis) for sar operation in rigan town, kerman province, which was hit by an earthquake of 6.3 richter scale on december 12, 2010 at 22:12. materials and methods: a gi...

This chapter introduces the problem of mining frequent geographic patterns and spatial association rules from geographic databases. In the geographic domain most discovered patterns are trivial, non-novel, and noninteresting, which simply represent natural geographic associations intrinsic to geographic data. A large amount of natural geographic associations are explicitly represented in geogra...

This paper introduces a special issue of the journal on the subject of Project Varenius, a three-year effort funded by the US National Science Foundation to advance geographic information science. Geographic information is first defined as an abstraction of primitive tuples linking geographic locations to general descriptors. Geographic concepts originate in the human mind, and are instantiated...

This paper introduces a special issue of the journal on the subject of Project Varenius, a threeyear effort funded by the US National Science Foundation to advance geographic information science. Geographic information is first defined as an abstraction of primitive tuples linking geographic locations to general descriptors. Geographic concepts originate in the human mind, and are instantiated ...

conclusion to diminish the gap between iranian scientific radiology papers and other competitor countries in the region and achievement of document 2025 goals, multifold effort of the society of radiology is necessary. results results of the current study showed a ratio of 0.19% for iranian papers in pubmed database published in 2009. in addition, in 2009, iranian papers constituted 0.29% of th...

In this work, a prototype GIS-based platform to integrate Volunteered Geographic Information from various sources with other spatial data is presented, aiming at assisting civil protection authorities in emergency response situations. The platform is now in the implementation phase, and this paper covers some aspects about its development and preliminary results to demonstrate the potentialitie...

this paper argues that the geovisualization research should go beyond the development of geovisual analytic toolbox, and pay attention to supporting human work in broad activity scale. Future generations of virtual geographic environments are expected to be capable of monitoring and recognizing context changes, reasoning about implications, and adjusting its service behavior accordingly. This w...

OBJECTIVES We aimed to evaluate the effect of geographic units of analysis on measuring geographic variation in medical services utilization. For this purpose, we compared geographic variations in the rates of eight major procedures in administrative units (districts) and new areal units organized based on the actual health care use of the population in Korea. METHODS To compare geographic va...

We retrieved topics that contained the geographic and temporal information at NTCIR-8 GeoTime task. Employing morphological analysis, temporal and geographic information are extracted from GeoTime collection. The index that represents a geographic hierarchy is made from the geographic information. In the experiment, we confirmed that the effect of the geographic hierarchical index when topics i...