Don Petkov

  • Citations Per Year
Learn More
From February to March 1989 the Phobos 2 spacecraft took 37 TV images of Phobos at a distance of 190-1100 km. These images complement Mariner-9 and Viking data by providing higher-resolution coverage of a large region West of the crater Stickney (40-160 degrees W) and by providing disk-resolved measurements of surface brightness at a greater range of(More)
Integrated use of data collected during remote sensing experiments and data from in-situ measurements reveal more features of the land cover objects under study. This features incorporated into existing GIS databases leads to better understanding, representing, managing, and integrating many aspects of the Earth as a complex system. The in-situ gathered(More)
In this paper we are concerned with the decisions in IT outsourcing. Lacity and Willcocks provide after extensive empirical work three separate two dimensional decision models involving contributions of the IT activity to the business positioning, to the business operations; in-house scale and management practices; degree of IT integration and technology(More)
The main directions of joint research activities, experimental works, fields of application and expected results from using a geo-information monitoring system are presented in the paper. Such a system is planned to be created in the frames of a Russian-Bulgarian scientific cooperation. Investigations will be carried out under a project on the development(More)
The WLAN is a set of hardware, firmware and software tools that allow to measure and collect certain parameters over relatively large area. By parameters we mean any physical value convertible into electrical counterpart. For instance: air temperature, relative humidity, soil moisture, leaf wetness, wind speed and direction, the water level in a river or a(More)
  • 1