Bangladesh, an alluvial and deltaic land of 147,570 square km, is prone to various natural disasters such as cyclones, floods, and droughts (Ahmad et al., 2001). The total population is about 130 million. The people of this country are still overburdened with various infectious diseases and ailments due to malnutrition. Unfortunately one more environmental hazard from geological sources – arsen...

What do we know with certainty about the life of Masud Khan? Khan was born in 1924 in the Punjab, the second son of a marriage that united an elderly Shiite Muslim father who had acquired power and wealth in the service of the British and a bride who was still in her teens. Khan apparently suffered a depression during his adolescence and was treated by a psychoanalytic psychotherapist. In 1946,...

Vafa Ghazi-Moghadam M. Kaveh Department of Electrical Engineering, University of Minnesota, Minneapolis, MN 55455, USA ABSTRACT This paper addresses some practical issues in active array signal processing, such as signal design, calibration and algorithmically e cient processing for range and angle determination. First, the operation of an experimental ultrasound-in-air active sensing system is...

Active network synthesis is important for circuit designer to find new circuits with desired performance. In this paper, a method of Tow-Thomas (TT) Bi-quad band-pass filter circuit generation methods is proposed using nullor representation of the operational amplifier (OPA), and a method for synthesizing active band-stop filters is presented, both of which start from voltage transfer function ...