several differing figures exist pertaining to the boarders and boundaries of the islamic republic of iran, with different computed areas. therefore, based on the geographical forces, mission and organization, with the aim of preventing any disagreements, taking relative consensus, scientific literature, research and development into consideration, it is proposed for the first time to determine ...

We study a reaction-diffusion equation in the cylinder Ω = R×T, with combustion-type reaction term without ignition temperature cutoff, and in the presence of a periodic flow. We show that if the reaction function decays as a power of T larger than three as T → 0 and the initial datum is small, then the flame is extinguished — the solution quenches. If, on the other hand, the power of decay is ...

Positions and maps of 1608 new compact sources were obtained in twelve sessions observed during 1994–2002 at the VLBA network at 8.4/2.3 GHz. These sources are recommended for use as calibrators for phase reference imaging and as geodetic sources for astrometric/geodetic VLBI applications.

In computational metrology one needs to compute whether an object satis es speci cations of shape within an acceptable tolerance. To this end positions on the object are measured, resulting in a collection of points in space. From this collection of points one wishes to extract information on atness, roundness, etc. of the object. In this paper we study one particular feature of objects, the an...

Much local government has been utilizing a large-scale digital map using Geographic Information System (GIS). However, the maintenance and renewal of a map database need much labor and time. Moreover, the updating method of a map has not been established yet and there have been almost no successful examples. The purpose of the study is to establish a method of updating the large-scale map for l...

Array based data parallel programming can be generalized in two ways to make it an appropriate paradigm for parallel processing of general recursively de ned data. The rst is the introduction of a parallel evaluation mechanism for dynamically allocated recursively dened data. It achieves the e ect of applying the same function to all the subterms of a given datum in parallel. The second is a ne...