The problem of image reconstruction from projections in computerized tomography, when cast as a system of linear equations, leads to an inconsistent system. The problem is studied under very adverse conditions, consisting of lowcontrast images and a strongly underdetermined system, where the number of equations is only about 25% of the number of variables (fewer equations enable the use of less...

Curt Richter made seminal contributions to our understanding of a number of issues regarding the relationships between physiology and behavior. He was the first to conceptualize behavior as an aspect of regulatory physiology. These ideas developed from his work on behavioral responses to a variety of physiological perturbations. The classic example is Richter's demonstration of the development ...

substantiation of the averaging method for differential equations with maxima is presented. two theorems on substantiates for differential equations with maxima are established.

1524-0703/$ see front matter 2013 Elsevier Inc. All rights reserved. http://dx.doi.org/10.1016/j.gmod.2013.11.004 q This paper has been recommended for acceptance by Pierre Alliez and Peter Lindstrom. ⇑ Corresponding author at: Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China. E-mail addresses: [email protected] (X. Pang), zhan.song@ siat.ac.cn (Z. Song...