Decomposing the design (or documentation) of large systems is a practical necessity but finding compositional development methods for concurrent software is technically challenging. This paper includes the development...
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Decomposing the design (or documentation) of large systems is a practical necessity but finding compositional development methods for concurrent software is technically challenging. This paper includes the development of a difficult example in order to draw out lessons about such methods. The concurrent garbage collector development is interesting in several ways;in particular, the final step of its development appears to be just beyond what can be expressed by rely/guarantee relations. This prompts an exploration of the limitations of this well-known method. Although the rely/guarantee approach is used, most of the lessons are more general.
Software correctness is an actual topic throughout the years. Client-server systems are the substantial subclass of all software with some specific characteristics. The research is mainly concentrated on this class of...
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ISBN:
(纸本)9781728138824
Software correctness is an actual topic throughout the years. Client-server systems are the substantial subclass of all software with some specific characteristics. The research is mainly concentrated on this class of program systems, showing the efficient ways for the reasoning over server side of client-server software. The compositional-nominative models and Interleaving Parallel Composition Languages (IPCL) constructs for different process spawning models, including the dynamic creation, are discussed here. The approach to automatization of reasoning over the programs is also proposed in this work. The applications are mentioned here. Conclusions and the next steps to add more formality to the whole process of functional correctness verification are discussed.
This essay presents evidence that the design of Beethoven's Leonore relies on tonal symmetry. The central key of the opera is C major;pairs of keys symmetrically disposed around C in terms of musical space such as...
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This essay presents evidence that the design of Beethoven's Leonore relies on tonal symmetry. The central key of the opera is C major;pairs of keys symmetrically disposed around C in terms of musical space such as Ab and E, Bb and D, A and Eb are shown to share in dramaturgical and emotional meaning. What is also demonstrated is that Beethoven organized the tonalities of Leonore in terms of mirror-like structures in time. To show the philosophic significance of these astonishing technical facts, the author employs the philosophy of Aesthetic Realism, founded by the great American scholar Eli Siegel. It declares: "In reality opposites are one;art shows this."
This paper presents a novel compositional method for finding fuzzy rules in a three-layered hierarchical fuzzy structure. The proposed method incorporates a multi-objective evolutionary algorithm and a large set of in...
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This paper presents a novel compositional method for finding fuzzy rules in a three-layered hierarchical fuzzy structure. The proposed method incorporates a multi-objective evolutionary algorithm and a large set of initial conditions, including dynamical conditions of the system under investigation. The proposed method is focused on handling the large set of initial conditions by a multi-objective evolutionary algorithm and it can be applied to a wide range of dynamical control systems in robotics. The method has been evaluated on a dynamical system such as the inverted pendulum. The experimental results and analysis showed that the proposed method is much better than the existing methods such as amalgamation and single objective evolutionary algorithm based methods.
This paper presents composition rules for assumption-commitment specifications that handle liveness commitments and do not rely on a complete definition for realizability. It is based on previous work by Abadi, Lampor...
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This paper presents composition rules for assumption-commitment specifications that handle liveness commitments and do not rely on a complete definition for realizability. It is based on previous work by Abadi, Lamport, and Plotkin.
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