0018-9251/95/$4.00 @ 1995 IEEE In numerous practical situations a large array of sensors is required, especially for improving the system ability to detect and track moving sources. However, the array performances are strongly affected by the lack of stationarity of the impinging signals which is due to multiple factors like time-varying source models, medium, and array. Here, we are chiefly co...

The concurrency is classified into two types: structured concurrency and nonstructured concurrency. After showing that the nonstructured concurrency cannot be represented by the conventional notations in the Petri net language, a method to represent such concurrency by the language is proposed. The proposed method allows us to utilize the existing approaches for analyzing properties of a nonstr...

0018-9251/00/$10.00 @ 2000 IEEE Use of a fixed threshold for the detection of radar signals results either in a degradation in the detection performance or an excessive increase in the FAR (false alarm rate), as a consequence of the variation in the background noise power. Therefore, using an adaptive threshold with the CFAR (constant FAR) property is unavoidable in most radar and automatic det...

It is shown how the Zak transform can be used to find nontrivial examples of functions f, g E L 2 ( 2 ) with f . g = 0 = F . C, where F, G are the Fourier transforms of f, g, respectively. This is then used to exhibit a nontrivial pair of functions h, keL2(T1), h # k, such that I h I = 1 k 1 , I H I = I K 1 . A similar construction is used to find an abundance of nontrivial pairs of functions h...

Published by the IEEE Computer Society 0018-9162/11/$26.00 © 2011 IEEE preparation is not typically part of most undergraduate programs, especially at engineering institutions. Cultivating entrepreneurial thinking requires going beyond teaching business fundamentals and reviewing case studies; it requires learning through practice.2 To support active student engagement in entrepreneurial activi...

6 computer Published by the IEEE Computer Society 0018-9162/13/$31.00 © 2013 IEEE A presidential transition represents that moment when the invisible and the visible switch places. A new president steps from the wings to head the organization. The outgoing leader takes a bow for work well done and returns to serve the Society in other ways. The event tells us more about the organization than ab...

In this note, we first give necessary and sufficient conditionsfor the Hunvitz stability of the family A of polynomials 6(s) = Pm,_(s),where the polynomials F i ( s ) are fixed; and the polynomials Manuscript received July 20, 1990; revised April 18, 1991, and October4. 1991. This work was supportcd by the National Science Foundationunder Grants ECS-8914357, ECS-8613315, and ECS...

This pilot, randomized controlled trial analyzed the effects of a cognitive behavioral therapy (CBT, n = 20) for insomnia vs a sleep hygiene (SH, n = 20) program on the three attentional networks (alertness, orienting, and executive function) and other additional outcome measures (sleep, pain, depression, anxiety, and daily functioning) of fibromyalgia patients. The CBT group showed significant...

Bazerghi etal. present an "exact kinematic model of thePUMA." It appears to be a model of the PUMA's internal software modelrather than amodel of the PUMA itself. Other sources of information Manuscript received November16, 1984; revised August 12, 1985.D.E.Whitney is with C. S. Draper Laboratory, Inc., 555Technology Square,Cambridge, MA02139, USA.<lb...