1,472,571 Hits in 7.8 sec

Extending UML-RT for Control System Modeling

Qimin Gao, L.J. Brown, L .F. Capretz
2004 American Journal of Applied Sciences  
There is a growing interest in adopting object technologies for the development of real-time control systems.  ...  Several commercial tools, currently available, provide object-oriented modeling and design support for real-time control systems.  ...  Extensions of UML-RT for Real-time Control Systems: From UML and UML-RT, we know that the finite state machine behavior models of objects are useful for code-generation; they are not very conducive for  ... 
doi:10.3844/ajassp.2004.338.347 fatcat:nvpgnwywpngcnj74blywnyggge

A time-sensitive object model for real-time systems

H. Rebecca Callison
1995 ACM Transactions on Software Engineering and Methodology  
we present time-sensitive objects: a data-oriented model for real-time systems.  ...  The values of a sporadic object may be accessed with time-referenced reads just as the values A Time-Sensitive Object Model for Real-Time Systems . 293 Legend: . . . . . . . .  ... 
doi:10.1145/214013.214021 fatcat:4amg6ijzgfhrnmy7kqxwbek4ya

A framework to model real-time databases [article]

Nizar Idoudi , Bruno Sadeg
2010 arXiv   pre-print
Then, we present a framework for real-time database design and describe its fundamental operations.  ...  In this paper, we give an overview about different aspects of real-time databases and we clarify requirements of their modelling.  ...  Real-time object model The mostly used data model for real-time databases is the relational model [22] .  ... 
arXiv:1001.1276v1 fatcat:pgyhkalpwbbjppf2z2sprip2cy

An object-oriented real-time programming language

Y. Ishikawa, H. Tokuda, C.W. Mercer
1992 Computer  
The real-time object model is a methodology for describing real-time systems.  ...  We have developed an extended object-oriented model -the real-time object model. It encapsulates rigid timing constraints in an object.  ...  The real-time object model is a methodology for describing real-time systems.  ... 
doi:10.1109/2.161281 fatcat:nljzxmrnmzh6zmkcvmq54ct54e

Structural Model of Real-Time Databases: An Illustration

Nizar Idoudi, Claude Duvallet, Bruno Sadeg, Rafik Bouaziz, Faiez Gargouri
2008 2008 11th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing (ISORC)  
In this paper, we propose an UML2.O profile, entitled UML-RTDB, allowing the design of structural model for a real-time database.  ...  A real-time database is a database in which both the data and the operations upon the data may have timing constraints.  ...  Thus, a real-time database is a collection of objects which are used to model time-critical dynamic systems in the real world.  ... 
doi:10.1109/isorc.2008.80 dblp:conf/isorc/IdoudiDSBG08 fatcat:qbw3oxnk6jajvctexnwuvv6bta

A Platform Independent Model for MPSoC Scheduling Using UML-RT

S. Ewins Pon Pushpa, D. Manamalli
2013 Lecture Notes on Software Engineering  
Integration of object modeling and real-time scheduling theory is a key to successful use of object technology for real-time software.  ...  Recently, system modeling with a Unified Modeling language (UML) is an active research area for developing MPSoC real-time system.  ...  is the key to successful use of object technology for real-time software.  ... 
doi:10.7763/lnse.2013.v1.4 fatcat:kzjpdy22obcb5dlaq26afmcwvy

How to Model a Real-Time Database?

Nizar Idoudi, Claude Duvallet, Rafik Bouaziz, Bruno Sadeg, Faiez Gargouri
2009 2009 IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing  
Then, we present a framework for real-time database design and describe its fundamental operations.  ...  In this paper, we give an overview about different aspects of real-time databases and we clarify requirements of their modeling.  ...  by the UML profile for Modeling and Analysis of Real-Time and Embedded Systems (MARTE) [12] .  ... 
doi:10.1109/isorc.2009.17 dblp:conf/isorc/IdoudiDBSG09 fatcat:wbjbim2zr5egropwudrp3ub4b4

Designing an interface for real-time and embedded DEVS

Mohammad Moallemi, Gabriel Wainer
2010 Proceedings of the 2010 Spring Simulation Multiconference on - SpringSim '10  
In this work, we are proposing a hardware-in-the-loop model-driven method to develop real-time and embedded applications based on DEVS (Discrete Event Systems Specification) formalism.  ...  We have defined structural modifications to the current DEVS abstract simulator, allowing for integration with hardware devices, using external ports of the model and adding hardware control mechanisms  ...  The Real-Time DEVS (RT-DEVS) formalism [5] is an extension of the DEVS formalism for real-time systems simulation.  ... 
doi:10.1145/1878537.1878680 fatcat:rpur4vy4dbbndgoshvmyervpvm

An Approach Towards Predictable Real-Time Transaction Processing

Young-Kuk Kim, Sang H. Son
1993 Fifth Euromicro Workshop on Real-Time Systems  
First, we introduce a new model for real-time database systems which includes both hard and soft real-time transactions.  ...  A real-tame database system can be defined as a database system where transactions are associated with real-time constraints typically in the form of deadlines.  ...  Our model for a real-time database system supports all of the above five types of transactions.  ... 
doi:10.1109/emwrt.1993.639058 dblp:conf/ecrts/KimS93 fatcat:p7uwpqkrnbdhrifuwkwtedu3sq

Formal Semantics and Analysis of Behavioral AADL Models in Real-Time Maude [chapter]

Peter Csaba Ölveczky, Artur Boronat, José Meseguer
2010 Lecture Notes in Computer Science  
In this work we present a formal object-based real-time concurrent semantics for a behavioral subset of AADL in rewriting logic, which includes the essential aspects of its behavior annex.  ...  AADL is a standard for modeling embedded systems that is widely used in avionics and other safety-critical applications.  ...  We thank Abdullah Al-Nayeem, Min Young Nam, Lui Sha, and Mu Sun, for many fruitful discussions on AADL, Xiokang Qiu for his work on a previous prototype, and Edgar Pek for his work on the active standby  ... 
doi:10.1007/978-3-642-13464-7_5 fatcat:y6nr75qvxfc2xfbalmhlifpdym

Modeling and Schedulability Analysis of Hard Real-Time Distributed Systems Based on Ada Components [chapter]

Julio L. Medina, J. Javier Gutiérrez, José M. Drake, Michael González Harbour
2002 Lecture Notes in Computer Science  
The paper proposes a methodology for modeling distributed real-time applications written in Ada 95 and its Annexes D and E.  ...  calls in distributed Ada real-time systems [5] , and in [6] we focused on defining real-time capabilities for the Ada 95 Distributed Systems Annex in order to allow the development of this kind of applications  ...  Moreover, the work in [3] proposes GLADE as a framework for developing object-oriented real-time distributed systems.  ... 
doi:10.1007/3-540-48046-3_22 fatcat:k6sajxrab5forchdfwpceyqzrm

A General Framework For Modeling Replicated Real-Time Database

Hala Abdel Hameed, Hazem M. El-Bakry, Torky Sultan
2009 Zenodo  
In this paper, we present a general framework to design a replicated real-time database for small to medium scale systems and maintain all timing constrains.  ...  There are many issues that affect modeling and designing real-time databases.  ...  UML presents a number of favorable characteristics for modeling complex real-time systems, it also used for modeling object-oriented database systems.  ... 
doi:10.5281/zenodo.1060815 fatcat:felnlxbghvgfxii7rd4fv4x43q

A study on holonic manufacturing systems and its application to real time scheduling problems [chapter]

Nobuhiro Sugimura, Toshimichi Moriwaki, Keiichi Hozumi
1998 Advances in Production Management Systems  
Prototypes of the holonie real time seheduling systems are developed based on the simulation models, and ease studies are earried out.  ...  Objeet oriented models are developed to represent simulation models of the holonie manufaeturing system for the meehanieal produets and one for the eomposite parts of the airerafts.  ...  Therefore, the scheduling systems only determine the schedules of the manufacturing equipment and the workpieces for very short time period. (1) an operation of a workpiecellot is finished, (2) a workpiecellot  ... 
doi:10.1007/978-0-387-35304-3_36 fatcat:mfo6r64xi5f4do7mmrneqw33bu

Towards a Formalization of Real-Time Patterns-Based Designs [chapter]

Kamel Boukhelfa, Faiza Belala
2015 IFIP Advances in Information and Communication Technology  
The UML profile for MARTE The UML profile for MARTE (Modeling and Analysis of Real-Time and Embedded systems) is an OMG standard.  ...  RT design patterns are a kind of patterns that have evolved specifically for real-time systems, and they provide various approaches to addressing the fundamental real-time scheduling, communications, and  ... 
doi:10.1007/978-3-319-19578-0_51 fatcat:xazvs2hnhjhulhn2f3xf3zosbm

Real-Time Distributed Simulation Environment for Air Defense System Using A Software Framework

Byunggyu Cho, Dae Young Kim, Sae Hwan Kim, Cheong Youn
2007 The Journal of Defence Modeling and Simulation: Applications, Methodology, Technology  
The Accuracy of the Periodic Data Sending Time For real-time distributed simulation, much information will be transmitted or received.  ...  During the real-time simulation, the time constraint is very important. Time constraint refers to the completion condition of simulation computations during a constant period.  ... 
doi:10.1177/154851290700400201 fatcat:vxrungdkj5eg5dxu3ly3nxvtdu
« Previous Showing results 1 — 15 out of 1,472,571 results