The explosive growth of the Internet and other sources of networked information have made automatic me diation of access to networked information sources an increasingly important problem Much of this informa tion is expressed as electronic text and it is becoming practical to automatically convert some printed docu ments and recorded speech to electronic text as well Thus automated systems cap...

Abst ract Query languages and their optimizations have been a very important issue in the database community. Languages for updating databases, however, have not been studied to the same extent, although they are clearly important since databases must change over time. The structure and expressiveness of updates is largely dependent on the data model. In relational databases, for example, the u...

| We address the problem of providing a homogeneous framework for integrating, in a database environment, active rules, which allow the speciication of actions to be executed whenever certain events take place, and deductive rules, which allow the speciication of deductions in a logic programming style. Actually, it is widely recognized that both kinds of rules enhance the capabilities of datab...

In a pre vi ous study, it was noted that in some cases when com pres sive strains greater than about 5% were ap plied to tu mors re moved from the breast, there was an abrupt and ir re vers ible change in the tis sue stiff ness. The data from that study were fur ther an a lyzed and in fil trat ing ductal car ci no mas with and with out lob u lar fea tures were se lected for ad di tional test in...

Daniel C. Wang Andrew W. Appel Department of Computer S ien e Prin eton University Prin eton, NJ 08544 USA Abstra t By ombining existing type systems with standard typebased ompilation te hniques, we des ribe how to write strongly typed programs that in lude a fun tion that a ts as a tra ing garbage olle tor for the program. Sin e the garbage olle tor is an expli it fun tion, we do not need to ...

United Na tions Ad min is tra tive Com mit tee on Co or di na tion in col labo ra tion with In ter na tional Food Pol icy Re search In sti tute (IFPRI) th Re port on Copy right © 2000 UN ACC SubCommittee on Nu tri tion ACC/SCN pub li ca tions may be re pro duced with out prior per mission , but please at trib ute to the ACC/SCN. The des ig na tions em ployed and the pres en ta tion of ma te ria...