z-arcs in the thirty degrees sector

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yevgenya Movshovich

Abstract In this detailed study of 3-segment non-convex simple arcs inscribed in the 30 ∘ {30^{\circ}} sector, we show that each such arc of length one fits in the interior of the sector of radius one with the prescribed embedding. We discuss implications of this study for covering problems involving triangular covers and for the worm problem of Leo Moser.

2011 ◽  
Vol 134 (2) ◽  
pp. 323-348 ◽  
Author(s):  
Edoardo Amaldi ◽  
Sandro Bosio ◽  
Federico Malucelli

2018 ◽  
Vol 11 (1) ◽  
pp. 29-48
Author(s):  
Amel Boumaza ◽  
Ramdane Maamri

The conversion of web services to semantic web comes the opportunity to automate various tasks. OWL-S plays a key role in describing web services behaviour. While ontology-based semantics given to OWL-S is structural rather than behaviourally oriented, we cannot automate an essential task in this field, verification. In this article, the mapping of OWL-S process model to Timed automata is investigated, which is a suitable formalism for real time systems modeling and automatic verification. Hence, this has led to not only enabling automatic verification but also covering problems related to automated verification of temporal quantitative properties as bounded liveness property. As a starting point, the OWL-S and sub entry of time ontologies for describing the timed behaviour of services has been chosen. A defined set of mapping rules is used to automatically encode control constructs defined in OWL-S and temporal information into timed automata. Also, it is shown how a Uppaal checker is used to check required properties formulated in TCTL. Finally, an EClinic case study is used to illustrate the technique.


Algorithmica ◽  
2009 ◽  
Vol 57 (3) ◽  
pp. 538-561 ◽  
Author(s):  
Sergey Bereg ◽  
Adrian Dumitrescu ◽  
Minghui Jiang
Keyword(s):  

Author(s):  
Ran Libeskind-Hadas ◽  
Nany Hasan ◽  
Jason Cong ◽  
Philip K. McKinley ◽  
C. L. Liu
Keyword(s):  

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