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SIGMOD
2005
ACM
107views Database» more  SIGMOD 2005»
16 years 6 months ago
A notation and system for expressing and executing cleanly typed workflows on messy scientific data
The description, composition, and execution of even logically simple scientific workflows are often complicated by the need to deal with "messy" issues like heterogeneou...
Yong Zhao, James E. Dobson, Ian T. Foster, Luc Mor...
PODS
2004
ACM
139views Database» more  PODS 2004»
16 years 6 months ago
On Preservation under Homomorphisms and Unions of Conjunctive Queries
Unions of conjunctive queries, also known as select-project-join-union queries, are the most frequently asked queries in relational database systems. These queries are definable b...
Albert Atserias, Anuj Dawar, Phokion G. Kolaitis
POPL
2010
ACM
16 years 3 months ago
Nominal System T
This paper introduces a new recursion principle for inductive data modulo -equivalence of bound names. It makes use of Oderskystyle local names when recursing over bound names. It...
Andrew M. Pitts
ICCD
2007
IEEE
132views Hardware» more  ICCD 2007»
16 years 3 months ago
Post-layout comparison of high performance 64b static adders in energy-delay space
Our objective was to determine the most energy efficient 64b static CMOS adder architecture, for a range of high-performance delay targets. We examine extensively carry-lookahead ...
Sheng Sun, Carl Sechen
PADS
2009
ACM
16 years 1 months ago
An Approach for Validation of Semantic Composability in Simulation Models
Semantic composability aims to ensure that the composition of simulation components is meaningful in terms of their expressed behavior, and achieves the desired objective of the n...
Claudia Szabo, Yong Meng Teo