The number of satellites visible to a Global Navigation Satellite System (GNSS) receiver is important for high accuracy surveys. To aid with this, there are software packages capable of predicting GNSS visibility at any location of the globe at any time of day. These prediction packages operate by using regularly updated almanacs containing positional data for all navigation satellites; however...

Security aspect during public events is becoming one of the intriguing issues which take serious attention especially when there is presence of the very important person (VIP). The advancement of recent spatial technology has been publicly realized and intensively being used for security purposes. This paper highlights the study on realism of 3D city urban model for security hotspot analysis us...

Abstract A good location of song or call posts and visual display sites males is crucial for territory defence mate attraction. These are typically located at prominent positions to ensure an efficient, long-distance sexual advertisement. If the purpose maximize visibility, a suitable strategy would be use multiple rather than just one site. We investigated this in ground-displaying houbara bus...

Generally, there is a lack of concepts expressing the accuracy of the digital data base of spatial information systems. Usually some point measures of positional accuracy, for example the root mean square positional error (RMS) or the circular error probable (CEP), are the only information available on geometrical accuracy. But the user is rather interested in measures for accuracy of objects s...

Natural environments and the amenities they offer have fueled much of the population growth in the rural United States (Deller et al. 2001, English et al. 2ooo). In fact, the fastest growing counties in the United States during the early 1990s were non-metropolitan counties that were destinations for retirees or that offered outdoor recreation opportunities (Johnson and Beale 1994). Migration t...

14 15 16 [plus additional co-authors that will be named at the time of submission to the journal] 17 2 Abstract 18 In Fall et al, 2011, results from the recently concluded Surface Stations Project surveying 19 the U.S. Historical Climatology Network (USHCN) were presented, using a siting 20 classification system developed by Michel Leroy for Meteofrance in 1999, and employed 21 system to introd...

Effective coastal planning incorporates the variety of user needs, values, and interests associated with coastal environments. This requires understanding how people relate to coastal environments as “places,” imbued with values and meanings, and accordingly, tools that can capture place and connect with people’s “sense of place” have the potential for supporting effective coastal management st...

of stereoscopic landscape analysis, and then determine the soil types that occur in each map unit by field inspecA method to enhance manual landform delineation using phototion of the soil at representative sites. A common inspecinterpretation to map a larger area is described. Conventional aerial tion density is one observation per one to four map photo-interpretation (API) maps using a geo-pe...