It is essential to supply electrical power continuously to mobile robots to keep moving. We studied how to make a mobile robot return to a recharging station autonomously by using specially designed ultrasonic sensors when a battery is low. A principle to calculate location and rotation angle of a mobile robot from recharging station was suggested. An anisotropic ultrasonic sensor system, we ca...

Recharging decisions for electric vehicles require many special considerations due to battery dynamics. Battery longevity is prolonged by recharging less frequently and at slower rates, and also by not charging the battery too close to its maximum capacity. In this paper, we address the problem of finding an optimal recharging policy for an electric vehicle along a given path. The path consists...

Introduction: Based on stratigraphy, events, ecology and climatology, the present time is assigned Anthropocene epoch due to dominance Homosapiens over geo- bio-hydro-aero spheres of mother earth during its accepted succeeding official 11700 years old Holocene from 1950. Asia’s largest shallow brackish water lagoon, Chilika housed about 1000km2, behind 64.3km barrier spit with multiple tidal in...

the response of karoun basin in lumped and semi-distributed simulation were compared. also, the flood intensity of the sub-basins and the effects of physical parameters on flood hydrograph have been investigated. results demonstrated that there was no significant difference between the characteristics of flood hydrograph in lumped and semi-distributed simulation. also, results showed that the f...