Groundwater aquifers are an important source of water supply for agriculture, industry and drinking. The present study investigates the changes in the quality of groundwater using geostatistical methods in the Ravar plain during a 10-year period. In this study, after selecting the appropriate spatial interpolation method to draw water quality parameters such as TDS, SAR and EC, zoning maps of R...

This paper investigates a new, integrated technique for storing and retrieving spatially varying data quality information in a relational spatial database. Rather than storing global data quality statements, the system enables data quality information to be referenced to a spatial framework, individual spatial objects, or even parts of spatial objects. The integrated model, called as RDBMS for ...

Visibility is an important factor of environmental quality that has various influences on the quality of neighborhood. This paper aimed to find the relationship between urban form and visual quality. A public space with a spatial configuration in one of Bushehr city's neighborhoods was selected as the case study. Bushehr city is surrounded by urban development and the sea. Compact urban spac...

Current software development practices are often “business-driven” and therefore tend to encourage testing approaches that reduce verification and validation activities to shorten schedules. In this paper, we focus on efficiency of testing and resulting software quality (reliability) in such an environment. We use a resource constrained testing model to analyze data from several projects. Our r...

Most group support systems (GSS) laboratory studies compare face-to-face groups with groups assigned to either a synchronous or asynchronous decision support system. Research findings have been inconclusive. A laboratory study that compared face-to-face groups with mixed support mode groups was conducted to determine the effectiveness of selectively using information technology to support the g...

Scientific information systems require consideration of two types of variability: variability between actors and variability between studies. We treated the variability between actors in a data import system that guarantees data quality and the variability between studies by the use of an annotation mechanism. To control high quality data when importing information from different actors, we pro...

This paper presents a robust and exible method for the extraction of mouth corners from videophone sequences. Robustness is referred to illumination conditions, speaker variability, pose and image quality, while exibility is given by the fuzzy environment which allows to eÆciently perform the fusion of several sources of information.

In solving problems people naturally seek to modify their external environment such that the physical space in which they work is more amenable or ‘congenial’ to achieving a desired outcome. Attempts to determine the effectiveness of certain artifacts or spatial reorganizations in aiding reasoners solve problems must be relativised to the difficulty of the task and the cognitive abilities of th...

We report a novel hyperspectral optical sensor capable of providing image information with four degrees of freedom (4D), i.e. volumetric spatial information and spectral information simultaneously, in real time. The imaging principle is based on the diffraction properties of volume holographic optical elements designed as spatial-spectral filters. The 4D imager can be configured to image object...