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A system for generating a false target radar image for countering wideband synthetic aperture and inverse synthetic aperture imaging radar systems to prevent a selected target from being detected by such radar systems comprises a receiver system for producing a digital signal that represents an incident radar signal. A phase sampling circuit is connected to the receiver for sampling the digital signal and providing phase sample data. An image synthesizer circuit is connected to the phase sampling circuit and arranged to receive the phase sample data therefrom. The digital image synthesizer circuit is arranged to process the phase sample data to form a false target signal, which is input to a signal transmitter system arranged to transmit the synthesized false target signal so that it can be received by a radar system.

In the past few decades an increasing number of investigators have examined how emotions are communicated through facial expression, speech prosody, and language in nonclinical and brain-damaged populations. Disorders of emotional communication (often referred to as affective processing disorders) are commonly associated with brain damage. These disorders include difficulty with expressing and perceiving emotional information, regulating emotions in communicative interactions, and demonstrating sensitivity to the emotional expressions of communicative partners. The purposes of this article are to: (1) describe "normal" affective communication; (2) review disorders in affective expression, perception, and regulation; (3) discuss the modality of facial expression and disorders of affective facial expression; and (4) present some informal tools for assessing affective processing.

Rapid Assessment of Problem Solving (RAPS) is a clinical test of verbal problem-solving skills for brain-injured persons. This modification of F. A. Mosher and J. R. Hornsby's (1966) Twenty Questions Test (20Q) reduces the memory demands of the test for brain-injured clients. This article provides background on the 20Q Test and modifications made for RAPS. It describes RAPS materials, administration, and scoring procedures and reports RAPS results for 70 normal participants. Normal participants solved RAPS problems with an average of 5 questions. Questions were predominantly constraint seeking and focused on semantic categories or features. Normal participants also reflected substantial variability in their performance on RAPS. This appeared to be related to 2 metacognitive abilities associated with problem solving, planning, and shifting set. The performance of 3 chronic traumatically brain injured individuals is also described and compared to the normal sample to illustrate clinical applications of RAPS.