Radar warning systems are found in all modern fighter aircraft and their main purpose is to warn pilots of enemy military units such as radar stations, aircraft and missiles. Testing these systems for fighters in real life is an expensive, complex and somewhat dangerous task. Hence engineers aim to test these systems in an artificial environment by the use of software in order to simulate hour-...

in this paper by using the data related to the monthly precipitation of 13 stations situated in west azerbaijan province of iran in a time period of 34 years, monitoring and forecasting the probability of a drought occurrence is evaluated in next coming months. in this process, first the monthly precipitation amounts for each rainfall station are used in order to calculate the standardized prec...

Central equatorial Africa is deficient in long-term, ground-based measurements of rainfall; therefore, the aim of this study is to assess the accuracy of three high-resolution, satellite-based rainfall products in western Uganda for the 2001–10 period. The three products are African Rainfall Climatology, version 2 (ARC2); African Rainfall Estimation Algorithm, version 2 (RFE2); and 3B42 from th...

neighborhoods within the hierarchy of urban structure are one of the smallest socio-physical building blocks of cities. traditional neighborhoods of iranian historic cities benefited from strong social relations which were flourished over the years and were manifested in the neighborhoods centers. in the modern era, the new master plans and the complementary local plans have disintegrated these...

Since October 1, 1950, hydrologic-station records in USGS reports have been listed in order of downstream direction along the main stream. All stations on a tributary entering upstream from a main-stream station are listed before that station. A station on a tributary entering between two main-stream stations is listed between those stations. A similar order is followed in listing stations on f...