The Relational Database Engine: An Efficient Validator of Temporal Properties on Event Traces

2013 ◽  
Author(s):  
Jason Vallet ◽  
Aouatef Mrad ◽  
Sylvain Halle ◽  
Eric Beaudet
Keyword(s):  
Relational Database ◽  
Temporal Properties ◽  
Database Engine

scholarly journals VERIFICATION OF CONJUNCTIVE ARTIFACT-CENTRIC SERVICES

2012 ◽  
Vol 21 (02) ◽  
pp. 111-139 ◽  
Author(s):  
GIUSEPPE DE GIACOMO ◽  
RICCARDO DE MASELLIS ◽  
RICCARDO ROSATI
Keyword(s):  
Relational Database ◽  
Data Exchange ◽  
Recent Literature ◽  
Conjunctive Queries ◽  
First Order ◽  
Temporal Properties ◽  
Verification Time

An artifact-centric service is a stateful service that holistically represents both the data and the process in terms of a (dynamic) artifact. An artifact is constituted by a data component, holding all the data of interest for the service, and a lifecycle, which specifies the process that the service enacts. In this paper, we study artifact-centric services whose data component is a full-fledged relational database, queried through (first-order) conjunctive queries, and the lifecycle component is specified as sets of condition-action rules, where actions are tasks invocations, again based on conjunctive queries. Notably, the database can evolve in an unbounded way due to new values (unknown at verification time) inserted by tasks. The main result of the paper is that verification in this setting is decidable under a reasonable restriction on the form of tasks, called weak acyclicity, which we borrow from the recent literature on data exchange. In particular, we develop a sound, complete and terminating verification procedure for sophisticated temporal properties expressed in a first-order variant of μ-calculus.

Auditory Training to Improve Speech Perception and Self-Efficacy in Aging Adults

2020 ◽  
Vol 63 (4) ◽  
pp. 1270-1281
Author(s):  
Leah Fostick ◽  
Riki Taitelbaum-Swead ◽  
Shulamith Kreitler ◽  
Shelly Zokraut ◽  
Miriam Billig
Keyword(s):  
Speech Perception ◽  
Self Efficacy ◽  
Temporal Order Judgment ◽  
Auditory Training ◽  
Intensity Discrimination ◽  
Training Design ◽  
Auditory Temporal Processing ◽  
Temporal Properties ◽  
Computer Based ◽  
Aging Adults

Purpose Difficulty in understanding spoken speech is a common complaint among aging adults, even when hearing impairment is absent. Correlational studies point to a relationship between age, auditory temporal processing (ATP), and speech perception but cannot demonstrate causality unlike training studies. In the current study, we test (a) the causal relationship between a spatial–temporal ATP task (temporal order judgment [TOJ]) and speech perception among aging adults using a training design and (b) whether improvement in aging adult speech perception is accompanied by improved self-efficacy. Method Eighty-two participants aged 60–83 years were randomly assigned to a group receiving (a) ATP training (TOJ) over 14 days, (b) non-ATP training (intensity discrimination) over 14 days, or (c) no training. Results The data showed that TOJ training elicited improvement in all speech perception tests, which was accompanied by increased self-efficacy. Neither improvement in speech perception nor self-efficacy was evident following non-ATP training or no training. Conclusions There was no generalization of the improvement resulting from TOJ training to intensity discrimination or generalization of improvement resulting from intensity discrimination training to speech perception. These findings imply that the effect of TOJ training on speech perception is specific and such improvement is not simply the product of generally improved auditory perception. It provides support for the idea that temporal properties of speech are indeed crucial for speech perception. Clinically, the findings suggest that aging adults can be trained to improve their speech perception, specifically through computer-based auditory training, and this may improve perceived self-efficacy.

Source-Oriented Data Processing. The triumph of the micro over the macro?

1996 ◽  
Vol 8 (3) ◽  
pp. 160-168 ◽  
Author(s):  
Janet Burt ◽  
Tom Beaumont James
Keyword(s):  
Data Processing ◽  
Relational Database ◽  
Database System ◽  
Relational Database System ◽  
Historical Databases ◽  
Oriented Approach

This article discusses the different approaches to the treatment of historical databases: the relational database system and κλειω, a source-oriented approach.

Sign in / Sign up

Export Citation Format

Share Document