Because of the rapid technological developments in web based geographical information systems, web based map applications and visual tours with 3d models, web applications are getting more indispensable part of presenting geographical information systems through web. In web based geographical information systems, the visualization is more important than desktop information systems. For the need...

OBJECTIVE To identify areas of vulnerability to new cases of HIV/tuberculosis (TB) co-infection. METHODS An ecological descriptive study was conducted by georeferencing new HIV/TB cases reported in the city of Ribeirão Preto, Southeastern Brazil, in 2006. Data were obtained from the São Paulo state information system for TB notification (TB-WEB) database. New cases of HIV/TB co-infection were...

introdouction: implants are considered to be a useful treatment for the replacement of lost teeth. although the success rate and durability of implants are high, the prevalence of peri-implantitis is high as well. the purpose of this study was to analyze the knowledge of general practitioners in the city of rasht in northern iran regarding peri-implantitis and its treatment. materials and metho...

BACKGROUND Naegleria spp. is a free-living amoeba of which some species including N. fowleri and N. australeinsis are highly pathogenic in human and animals. These widespread amoebae could be found in different environmental sources particularly in aquatic resources of tropical and subtropical regions. The most important source of infection is via recreational water contact. Due to the lack of ...

BACKGROUND Rapid economic growth in Vietnam over the last decade has led to an increased frequency of road traffic injury (RTI), which now represents one of the leading causes of death in the nation. Various efforts toward injury prevention have not produced a significant decline in the incidence of RTIs. Our study sought to describe the geographic distribution of RTIs in Hanoi, Vietnam and to ...

Introduction: Adherence to patients’ rights is one of the most important ethical issues in the hospital that should be considered. An efficient health system requires active participation and proper interaction between health care recipients and providers. Objective: This study was conducted to determine the status of observing the charter of patients’ rights and related factors from the pe...

In this paper,we study the definition of the results for GIS queries. They are based on a graphical representation. Such a representation may introduce some ambiguities depending on the class of queries. We study two different ambiguities due to the aggregate functions and the notion of homogeneity.

To satisfy transport infrastructure requirement in a country in consonance to its developmental pace, decisions must be based on more reliable, update, relevant, easily accessible and affordable information. Geographic information system for transportation has now emerged as the technology with considerable potential for achieving dramatic gains in efficiency and productivity for multitude of t...

In this paper we report on a new system to augment a 3D block model of a real city obtained from aerial photogrammetry or aerial laser scanning with geo-referenced terrestrial data of the facades. The terrestrial images are acquired by a hand-held digital consumer camera. The relative orientation of the photographs is calculated automatically and fitted towards the 3D block model with minimized...