The lobula giant movement detector (LGMD) system in the locust responds selectively to objects approaching the animal on a collision course. In earlier work we have presented a neural network model based on the LGMD system which shared this preference for approaching objects. We have extended this model in order to evaluate its responses in a real-world environment using a miniature mobile robo...

Smart static and dynamic obstacle walking stick with EMF detector is an upgraded smart designed for blind people optimal navigation electrical safety. An advanced prototype that allows visually challenged to navigate paths identify electronic gadgets ease using modern technologies hereby developed. The integrated ultrasonic sensor along detector. This first uses sensors sense obstacles ahead wa...

Density or gravity currents have been always one of the main causes for sedimentation along many of the dam reservoirs. So controlling this phenomenon is very important for increasing useful life of such reservoirs. In this research study the effect of a combination of rough bed and obstacle on the control of sedimentary density current has been investigated. Experiments were conducted in a til...

We study the sensitivity of future xenon- and argon-based dark matter neutrino detection experiments to low-energy atmospheric neutrinos. Not accounting for experimental backgrounds, primary obstacle identifying nuclear recoils induced by neutrinos is tail electron recoil distribution due $pp$ solar use NEST code model signals in a xenon detector find that an exposure 700 tonne-years will produ...

density or gravity currents have been always one of the main causes for sedimentation along many of the dam reservoirs. so controlling this phenomenon is very important for increasing useful life of such reservoirs. in this research study the effect of a combination of rough bed and obstacle on the control of sedimentary density current has been investigated. experiments were conducted in a til...

During the past 30 years, at least 30 attempts have been made to build a useful mobility aid for the blind cane traveler (1,2) . All these efforts have resulted in only three aids showing sufficient promise to warrant serious evaluation : the Kay Binaural Sensory Aid (3,4), the Lindsay Russell' Pathsounder (5), and the Bionic Laser Cane . Why has the Laser Cane project been relatively more succ...

Insects navigate swiftly through the most complex environments, often attaining a level of agility that greatly outperforms that of present-day aerial robots. Insects use optic flow (the retinal sleep on an agent retina of the contrasted objects in his environment) they perceive thanks to their compound eye to navigate autonomously in unknown environments. Insects use therefore principles to pe...

phase sensitive detector described here has two principal applications: a- to produce a d.c out put proportional to- the amplitude of an incoming a,c signal and indicate, by the outut polarity, the phase of the signal with respect to an internal reference. b- to detect the presence of a signal of known phase and frequency which would otherwise be lost in «background noise» and to measure its am...