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Modelling Hybrid Programs with Event-B
[chapter]
2020
Lecture Notes in Computer Science
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In this paper, we propose a correct-by-construction approach that implements the reasoning on hybrid programs particularly the reasoning of dRL in Event-B to take advantage of its associated tools. ...
Based on the differential refinement logic (dRL), a dynamic logic for refinement relations on hybrid systems, it is possible to prove that a Time-Triggered model refines an Event-Triggered model. ...
Modelling Hybrid Programs with Event-B The objective of the DISCONT project [1] is to elaborate a correct-byconstruction method, based on Event-B, to specify hybrid systems models. ...
doi:10.1007/978-3-030-48077-6_10
fatcat:we5xf3l2ivb25ljvm7ir6oo26y
Formal Verification of a Hybrid IoT Operating System Model
2021
IEEE Access
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This paper proposes a hybrid model for an IoT operating system and employs the Event-B method for modeling and verification. ...
According to the programming model, IoT operating systems can be categorized into three types: multithreading, event-driven, and hybrid. ...
ACKNOWLEDGMENT The authors would like to thank Abrial (the inventor of the Event-B method) for his help in modeling verification, Z. ...
doi:10.1109/access.2021.3073398
fatcat:ex6rxymf4bhb7imztec4t37twm
Non-monotonic Negation in Hybrid Probabilistic Logic Programs
2006
International Symposium on Artificial Intelligence and Mathematics
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It is the first time that two different semantics for Hybrid Probabilistic Programs with nonmonotonic negation as well as their relationships are described. ...
of original Hybrid Probabilistic Logic programs framework of [23] for programs without negation. ...
Hybrid Probabilistic Programs In the following subsections, we present the syntax of the proposed Hybrid Probabilistic Programs with nonmonotonic negation. ...
dblp:conf/isaim/SaadP06
fatcat:a6js7mw6rnhc7f53vlddtn2d4u
A new approach to hybrid probabilistic logic programs
2007
Annals of Mathematics and Artificial Intelligence
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among the events in the program. ...
In this paper, we extend the language of hybrid probabilistic programs by allowing disjunctive composition functions to be associated with heads of clauses and change its semantics to be more suitable ...
Let P be a ground h-program and h be a hybrid formula function. Then, h is a probabilistic model of P iff h satisfies P . Definition 15 ([17]). Let [a 1 , a 2 ], [b 1 , b 2 ] ∈ C[0, 1]. ...
doi:10.1007/s10472-007-9082-1
fatcat:kf7j7dd6gzgj5gvomj34c5v3pe
Model-Based Self-Adaptive Embedded Programs with Temporal Logic Specifications
2006
Proceedings - International Conference on Quality Software
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Our approach works with models, and hence it may be incorporated into existing model-based design workflow: the resulting self-adaptive model can be analyzed using an existing model simulator and may be ...
temporal logic requirements; we then extend the self-monitoring model with a reconfiguration mechanism based on its REDL specification. ...
program using an existing model-based code generator. ...
doi:10.1109/qsic.2006.41
dblp:conf/qsic/Tan06
fatcat:ulin4py4bjdwlai7jzsgn6e47y
A Formal Framework for Hybrid Event B
2014
Electronical Notes in Theoretical Computer Science
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In this paper, we present Hybrid Event B, a formal language for modeling hybrid systems. Specifically, Hybrid Event B is an extension of Event B associating with differential dynamic logic. ...
The main contribution of this paper is that we give the definition of a differential event in Hybrid Event B, which makes it possible using differential dynamic logic in modeling continuous dynamical systems ...
This work is partially supported by the projects funded by the 973 Program ...
doi:10.1016/j.entcs.2014.12.002
fatcat:cxrph6vianhi5c6opuatvaarl4
A Correct by Construction Approach for the Modeling and the Verification of Cyber-Physical Systems in Event-B
[chapter]
2020
Lecture Notes in Computer Science
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models. ...
One of the most common architectures for CPSs is a discrete software controller which interacts with its physical environment in a closed-loop schema where input from sensors is processed and output is ...
In our approach we propose to model the high-level structure of hybrid programs in Event-B, and more precisely the generic templates defined for modelling Event and Time-Triggered systems in dRL to take ...
doi:10.1007/978-3-030-48077-6_31
fatcat:ecwxfxgtx5gfza322fzuwwkgbq
Towards a UTP Semantics for Modelica
[chapter]
2017
Lecture Notes in Computer Science
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This is a language for modelling a system's continuous behaviour using a combination of differentialalgebraic equations and an event-handling system. ...
When combined with the wealth of existing UTP theories for discrete system modelling, our work enables a sound approach to heterogeneous semantics for Cyber-Physical systems by leveraging the theory linking ...
time and discrete event models, and their concurrent simulation to support empirical evaluation. ...
doi:10.1007/978-3-319-52228-9_3
fatcat:qdchoo2yo5h5rhjk5briyywqau
Early Experiments with the OpenMP/MPI Hybrid Programming Model
[chapter]
2008
Lecture Notes in Computer Science
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The paper describes some very early experiments on new architectures that support the hybrid programming model. ...
We demonstrate the use of a tool that can examine the detailed sequence of events in a hybrid program and illustrate that a hybrid computation might not always proceed as expected. ...
Basic tests We wrote a simple hybrid Fortran program and instrumented it with MPE. ...
doi:10.1007/978-3-540-79561-2_4
fatcat:oikw5eflmfdcrd7elgusr4kfgq
Combining Formal and Informal Methods in the Design of Spacecrafts
[chapter]
2016
Lecture Notes in Computer Science
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a formal model using Hybrid CSP (HCSP), which is an extension of CSP for formally modeling hybrid systems. ...
of attempts have been done (see the related work section); -It provides an option to start the design of a hybrid system with an HCSP formal model, and simulate and/or test it using Matlab platform economically ...
We thank all of our collaborators with whom the joint work are reported in this chapter, including Prof. Chaochen Zhou ...
doi:10.1007/978-3-319-29628-9_6
fatcat:5lnkzjh2mjhlramjaduen4w4d4
Hybrid versus traditional cardiac rehabilitation models: A systematic review and meta-analysis
2014
Kardiologia polska
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In summary, hybrid CR protocols have comparable efficacy to the traditional model. ...
Therefore, hybrid CR protocols have been developed. In this study, we compared the hybrid and traditional CR models in a meta-analysis framework. ...
The hybrid model was associated with fewer ECG sessions which contributed to a significant cut to the program costs. ...
doi:10.5603/kp.a2018.0175
pmid:30251248
fatcat:dqvyqnehnbfrbap3fmprcyzaci
The SHIFT Programming Language and Run-time System for Dynamic Networks of Hybrid Automata
[chapter]
2000
Verification of Digital and Hybrid Systems
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Components exhibit hybrid behavior, consisting of continuous-time phases separated by discrete-event transitions. ...
This report presents SHIFT, a programming language for describing dynamic networks of hybrid automata. ...
a have one transition t1 with two external events b : x and d : z. Let b have t w o transitions t1 and t2. Let t1 h a v e one local event b : x and one external event d : w. ...
doi:10.1007/978-3-642-59615-5_17
fatcat:gyljt6d5dvc67cr7qmv7tn7cfy
A general technique for the PLC-Based implementation of RW supervisors with time delay functions
2011
The International Journal of Advanced Manufacturing Technology
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effect, the PLC implementation of the hybrid controller with the reduced RW supervisor was not possible. ...
The reduced RW supervisor offers fewer states for the programmable logic controller (PLC) implementation of the hybrid controller with less memory requirements, but due to a problem called the avalanche ...
For step 4, if place p is bounded in accordance with M(p) ≤ b, say, then p is modeled by a buffer with capacity b (i.e. b + 1 states). ...
doi:10.1007/s00170-011-3817-1
fatcat:as4bpgxrhbekdehrmqfiuxrlbu
Multi-item EOQ model with hybrid cost parameters under fuzzy/fuzzy-stochastic resource constraints: A geometric programming approach
2008
Computers and Mathematics with Applications
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In this paper, a multi-item economic order quantity (EOQ) model is considered in which the cost parameters are of fuzzy/hybrid nature under two types of resources -(a) resources as fuzzy quantities; (b ...
We find the average cost for the model, which is a function of order quantity and demand rate and also of some hybrid parameters. ...
Letà 1 = (3, 5, 9) (+) (6, 1.2) andà 2 = (6, 7, 10) (+) (7, 1.8) be two hybrid numbers, theñ A 1 ⊕à 2 = [(3,
Fuzzy-stochastic programming
Probability of a fuzzy event The imprecise events may be ...
doi:10.1016/j.camwa.2008.09.010
fatcat:eftvhzfu4zgrjkyl2xvueylsoi
SIGNAL as a model for real-time and hybrid systems
[chapter]
1992
Lecture Notes in Computer Science
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Hybrid Systems axe models of systems operating in real-time and handling events as well as "continuous" computations. The SIGNAL formalism for Hybrid Systems is presented in this extended abstract. ...
Its expressive power is discussed, and a general method to associate various formal systems with it is presented and illustrated on deriving the present SmNAL compiler. ...
This very fundamental remark justifies the kind of model for Hybrid System we use in this paper. Our model handles infinite sequences of data with a certain kind of restricted asynchronism. ...
doi:10.1007/3-540-55253-7_2
fatcat:wiirwa67cjbfnhiwybu3h34izq
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