the islamic republic of iran, in her 20 year vision by the year 2025, is a developed country with the first economic, scientific and technological status in the region, with revolutionary and islamic identity, inspiring islamic world, as well as effective and constructive interaction in international relations. enjoying health, welfare, food security, social security, equal opportunities, fair ...

maraghe observatory was built by such engineers as moayiededdin orozi etc. under supervision of khaje nasireddin tousi in 7th century ah. the most significant feature associated with maraghe observatory is the fact that architecture is employed to achieve astronomical purposes in this site. the reason for preferring observatory by astronomers was the fact that these units are superior to wooden...

A Virtual Observatory (VO) provides enhanced distributed access to online astronomical data­sets, and frequently incorporates data processing and visualisation facilities. Almost all critical aspects of data­grid research and technology are encountered when developing a Virtual Observatory. Issues include interoperability of data­sets and processing software, metadata format standardisation, an...

The advent of the Virtual Observatory has begun an evolution in the space physics data environment. A number of nascent and discipline specific Virtual Observatories have started to emerge with an emphasis on data search and retrieval. As this new data environment takes shape an emphasis will be placed on interdisciplinary communication in attempts to address large scale and global problems. To...

As a scientific discipline, Astronomy is rather unique. We only have one laboratory, the Universe, and we cannot, of course, change the initial conditions and study the resulting effects. On top of this, acquiring Astronomical data has historically been a very labor-intensive effort. As a result, data has traditionally been preserved for posterity. With recent technological advances, however, t...

We are inventing techniques to increase variable source yields from image subtraction analyses. An example innovation that will improve detection efficiency by about 10% is presented. The MEGA image-subtraction pipeline is a software instrument that could evolve into a tool to do microlensing science with virtual observatories.

Reflection energy from a linear reflector comes from an integrant over an aperture often described by the Fresnel zone. Within the Fresnel zone, the diffraction energy constructively builds the reflection energy. This paper uses diffraction theory to explain the reflector edge effect on amplitude and the amplitude variation within the Fresnel zone. Thus, discuss the Fresnel zone effect for AVO ...

The vision of the Electronic Geophysical Year (eGY) is that we can achieve a major step forward in geoscience capability, knowledge, and usage throughout the world for the benefit of humanity by accelerating the adoption of modern and visionary practices such as virtual observatories for managing and sharing data and information. eGY has found that the biggest challenges to implementing the vis...

Factors affecting vehicle occupancy measurement were examined with the aim of improving state vehicle occupancy monitoring programs. A comparison was conducted of five data sets looking at the effects on average vehicle occupancy (AVO) of time of day, day of week, road types, HOV lanes, locational differences, and traffic volume. It was found that AVO was higher in the afternoons, on Saturdays,...