Some general conditions under which the specification of a concurrent system can be expressed as the conjunction of specifications for its component processes are explored. A lattice-theoretic fixed-point theorem abou...
详细信息
Some general conditions under which the specification of a concurrent system can be expressed as the conjunction of specifications for its component processes are explored. A lattice-theoretic fixed-point theorem about increasing functions is proved, and examples of its application in several areas of computing science are given. Some consequences are drawn for the design of concurrent algorithms, high-level programming languages, and fine-grained concurrent computer architectures.< >
The authors consider the use of a nonstandard interpretation to analyze parametrized circuit descriptions, in particular for array based architectures. Various metrics are employed to characterize the performance trad...
详细信息
The authors consider the use of a nonstandard interpretation to analyze parametrized circuit descriptions, in particular for array based architectures. Various metrics are employed to characterize the performance tradeoffs for generic designs. The objective is to facilitate the comparison of feasible design alternatives at an early stage of development. The research centers on techniques for extracting various performance attributes, such as critical path and latency, from a single generic design representation. The features of this approach include-uniformity, modularity, reusability, flexibility, and computerized support.< >
This paper proposes a notion, the 'ambit' of an action, that allows the degree of distribution of an action in a multiagent system to be quantified without regard to its functionality. It demonstrates the use ...
详细信息
ISBN:
(纸本)9780769528564
This paper proposes a notion, the 'ambit' of an action, that allows the degree of distribution of an action in a multiagent system to be quantified without regard to its functionality. It demonstrates the use of that notion in the design, analysis and implementation of dynamically-reconfigurable multi-agent systems. It distinguishes between the extensional (or system) view and intensional (or agent-based) view of such a system and shows how, using the notion of ambit, the step-wise derivation paradigm of Formal Methods can be used to derive the latter from the former In closing it addresses the manner in which these ideas inform studies in the ethics of systems of artificial agents.
In this paper we show how recent concepts from Dynamic Logic, and in particular from Dynamic Epistemic logic, can be used to model and interpret quantum behavior. Our main thesis is that all the non-classical properti...
详细信息
This paper attenlpts to provide a formed specification of an Automatic Train Protection (ATP) system. Such a system continuously checks the actual speed of a passenger train against its maximum permitted speed and tak...
详细信息
An overview is given of D-I algebra, an algebra for the specification of the safety and progress properties of delay-insensitive circuits in terms of voltage-level transitions on wires. The algebraic laws make it poss...
详细信息
An overview is given of D-I algebra, an algebra for the specification of the safety and progress properties of delay-insensitive circuits in terms of voltage-level transitions on wires. The algebraic laws make it possible to specify circuits concisely and facilitate the verification of designs. Individual components can be composed into circuits in which signals along internal wires are hidden from the environment. A delay-insensitive approach has been successfully applied to several nontrivial designs, such as the design of a packet router and the design of a constant response-time stack, and D-I algebra has played an important role both in suggesting decompositions and in verifying them.< >
A hybrid architecture for machine vision is described. The primary components of the architecture are a Datacube pipelined image processor, a configurable network of 32 T800 transputers, a Sun-4 workstation and a spec...
详细信息
A hybrid architecture for machine vision is described. The primary components of the architecture are a Datacube pipelined image processor, a configurable network of 32 T800 transputers, a Sun-4 workstation and a special-purpose interface connecting the Datacube to the transputer network. The implementation of a 3D structure-from-motion vision algorithm (Droid) on this architecture is described. This algorithm reconstructs 3D structure by analysing image sequences obtained from a moving camera. The Datacube handles the image digitisation, storage and display; the transputer network performs the feature extraction (corner points) in parallel and the Sun-4 computes the 3D-isation. In this application, which was demonstrated live during a recent ESPRIT conference in Brussels, the architecture delivers a performance of greater than 1 frame per second-17 times the performance of a Sun-4 alone.< >
In this paper we analyze classical and quantum correlations using the tools of epistemic logic. Our main contribution consists of two new logical systems. The first one is called General Epistemic Logic (GEL), it exte...
详细信息
作者：
Robson, J.M.Oxford University
Programming Research Group Oxford University Computing Laboratory Oxford United Kingdom
Dynamic storage allocation using fixed blocks is usually inefficient in its use of store. The amount of store needed depends on the allocation strategy used. It is proved that for any strategy the amount of store need...
详细信息
暂无评论