Israel Academy of Sciences and Humanities

Vor einem Jahrhundert dachten viele führende europäische Intellektuelle, dass Religion dazu verdammt sei, bald marginal zu werden; heute scheint Religion oft von mörderischen »Schlägern um Gottes willen« gekapert worden zu sein, die ihre Schriften nur noch wörtlich lesen können, um ihren Rückzug vor jeglicher Offenheit gegenüber dem Anderen zu rechtfertigen. Die Aufsätze in diesem Band von Guy G. Stroumsa untersuchen, wie sich einige führende Intellektuelle und Wissenschaftler dem Studium und Verständnis religiöser Phänomene genähert haben

This paper describes two experiments involving moving sources. The first one is a class activity for observing beats in a Doppler setup; the second one describes how to observe the transition from “subsonic” to “supersonic” waves in a ripple tank.

The Faraday ice-pail experiment is performed when studying the distribution of charges in conductors: Inside a hollow conductor the net charge is zero, and any excess charge resides on the outside surface.

Annals of the New York Academy of SciencesVolume 866, Issue 1 p. 268-280 Cross-Cutting Issues and Lessons Learned ALEXANDER KEYNAN, ALEXANDER KEYNAN The Israel Academy of Sciences, 43 Jabotinsky Road, P.O.B. 4040, Jerusalem 91040Search for more papers by this author ALEXANDER KEYNAN, ALEXANDER KEYNAN The Israel Academy of Sciences, 43 Jabotinsky Road, P.O.B. 4040, Jerusalem 91040Search for more papers by this author First published: 07 February 2006 https://doi.org/10.1111/j.1749-6632.1998.tb09168.xRead the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Volume866, Issue1SCIENTIFIC COOPERATION, STATE CONFLICT: THE ROLES OF SCIENTISTS IN MITIGATING INTERNATIONAL DISCORDDecember 1998Pages 268-280 RelatedInformation

We present three explicit constructions of hash functions, which exhibit a trade-off between the size of the family (and hence the number of random bits needed to generate a member of the family), and the quality (or error parameter) of the pseudo-random property it achieves. Unlike previous constructions, most notably universal hashing, the size of our families is essentially independent of the size of the domain on which the functions operate. The first construction is for the mixing property-mapping a proportional part of any subset of the domain to any other subset. The other two are for the extraction property-mapping any subset of the domain almost uniformly into a range smaller than it. The second and third constructions handle (respectively) the extreme situations when the range is very large or very small. We provide lower bounds showing our constructions are nearly optimal, and mention some applications of the new constructions.