This chapter is dedicated to the memory of George Boolos. From the start of the subject until his death on 27 May 1996 he was the prime inspirer of the work in the logic of provability.

∗This paper was published in the Journal of Philosophical Logic, 33/1 (2004): 1–26. The authors would like to thank C.A. Anderson, Thomas Hofweber, Jeffrey Kegler, and Kai Wehmeier for their comments on this paper. The paper was presented in its current form at the Seminar für Philosophie, Logik, und Wissenschaftstheorie, Universität München. We gratefully acknowledge the audience feedback. †An...

of 30 years in the case of Drs. Ronald Goldstein and David Garber, 23 years since Dr. Maurice Salama joined you, and 18 years since Dr. Henry Salama joined the team in Atlanta. That’s an amazing record in any field, and certainly reason enough to talk to you about your practice, your teaching, and also what you see as the future for dentistry. Let’s start with the beginning of your practice, an...

This paper uses retrospective event-history data covering a four-year period to examine the timing of exposure to HIV/AIDS education and social marketing condom promotion campaigns, relative to the timing of changes in sexual risk behaviour in Tanzania. Analysis of the event-history data shows that the process of exposure to AIDS education messages and exposure to brand advertising for Salama b...

henceforth PC) undertakes a fundamental re-examination of the relationship between merelogy, the general theory of parts, and set theory, the general theory of collections. He assumes a certain minimum background familiarity with both subjects, and limitations of space make the same assumption inevitable in the present account. Varzi (2011) is recommended as a clear, concise survey of mereology...

Visible Diode Laser Enhancement of Exotic DNA Uptake by Fowl SpermEssam A. El-Gendy, Mona M. Abdelaziz, Mohamed Abdelfattah, S. Salama, YhiaM. Badr