By most accounts (1 ), the development of bar code technology is credited to 2 graduate students at Drexel University. In 1948, Bernard Silver had overheard the president of a local grocery chain asking a dean at the University whether they could develop a system to read product information at checkout. Silver told his colleague Norman Woodland of this request. After one failed idea involving u...

This paper presents a formal and computational methodology for incorporation of new knowledge into knowledge bases about actions and changes. We employ Gelfond and Lifschitz’ action description language A to describe domains of actions. The knowledge bases on domains of actions are defined and obtained by a new translation from domain descriptions in J into abductive normal logic programs, wher...

You need not look far to find a slew of articles, white papers, and research reports describing the vulnerability of voice over IP systems. VoIP systems are vulnerable, but currently, the threat of actual attack to these systems is moderate. New vulnerabilities are being reported at an accelerating rate, such as the one that recently affected Cisco’s Call Manager (http://www.techweb.com/wire/ s...

BACKGROUND Abuse of older people is a serious issue and is associated with an increased risk of morbidity and mortality, and professionals will encounter elderly victims of abuse in all areas of the health care system. An important health determinant is behavioral factors, including coping style, which will impact on how older people manage stress and maintain control in their lives, and thereb...