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CHI
1995
ACM
15 years 5 months ago
The ScienceWare Modeler: a learner-centered tool for students building models
The Modeler is designed using a learner-centered approach [5], with scaffolding to address the specific needs of learners. Scaffolding [3] is an educational term that refers to pro...
Shari L. Jackson
ISSAC
1995
Springer
155views Mathematics» more  ISSAC 1995»
15 years 5 months ago
On the Implementation of Dynamic Evaluation
Dynamic evaluation is a technique for producing multiple results according to a decision tree which evolves with program execution. Sometimes it is desired to produce results for ...
Peter A. Broadbery, T. Gómez-Díaz, S...
RULES
1995
Springer
92views Database» more  RULES 1995»
15 years 5 months ago
Rule Contexts in Active Databases - A Mechanism for Dynamic Rule Grouping
Engineering applications that use Active DBMSs (ADBMSs) often need to group activities into modes that are shifted during the execution of different tasks. This paper presents a me...
Martin Sköld, Esa Falkenroth, Tore Risch
VLDB
1987
ACM
108views Database» more  VLDB 1987»
15 years 5 months ago
Translating and Optimizing SQL Queries Having Aggregates
is at least ae powerful as SQL. Two well known relational query languages that have a sound theoretical foundation are relational algebra and relational calculus. As SQL is more cl...
Günter von Bültzingsloewen
ICS
2010
Tsinghua U.
15 years 4 months ago
Clustering performance data efficiently at massive scales
Existing supercomputers have hundreds of thousands of processor cores, and future systems may have hundreds of millions. Developers need detailed performance measurements to tune ...
Todd Gamblin, Bronis R. de Supinski, Martin Schulz...