The Specification and Description Language (SDL) is a domain specific language that is well-established in the telecommunication sector since many years, but only a small set of SDL tools is available. In contrast, for the Unified Modeling Language (UML) a wide range of different kinds of tools can be used for various purposes, such as model transformation. In order to makes it possible to spec...

SDL is a graphical language, standardized under the Z.100 recommendation, widely used to represent telecommunication systems, process control and real-time applications in general. In this paper we have three objectives, first present an algorithm that allows the transformation of a DEVS specification to an SDL specification. Second we present a XML representation for the SDL language; this XML...

This paper gives a contribution in the efforts of Semantic web ontology development. We have developed the core ontology for Specification and Description Language (SDL), an object-oriented, formal language defined by the International Telecommunications Union Telecommunications Standardization Sector (ITU-T) as recommendation Z.100. The language is intended for the specification of complex, ev...

Background: Dipentyl phthalate (DPeP) is a plasticizer compound commonly used in polyvinylchloride plastic to increase their softness and flexibility. They are not bound covalently to the plastic polymers and can therefore leach out into the environment, and have been shown to adversely affect the health of humans and animals. Methods: We investigated the effect of DPeP on the various cognitive...

The main purpose of the present study is to investigate contribution Self-Assessment with Goal Setting (SAGS), which was implemented “self-directed learning” (SDL) method, improvement academic performance in context language teaching sixth-grade students primary school. research methodology followed an experimental design two groups, one and control. public schools Rhodes la...

This tutorial is a quick introduction to the basic ideas, concepts and features of SDL. It starts by introducing the class of systems that SDL is intended for and the main features of their behaviour. The correspondence between these features and the basic concepts of SDL are explained. Then the various language elements of SDL are introduced gradually and exemplified by way of a simple system ...

Distributed systems evolution has led telecommunication management network (TMN) systems to use object-oriented middleware paradigm, mainly CORBA (Common Object Request Broker Architecture). CORBA only includes a mechanism for defining object interfaces not for specifying the behaviour of these objects. The behaviour of a TMN system has to follow concrete and restrictive specifications, which a...

The paper describes an abstract implementation of SDL communication semantics in the larger context of a design of SDL 92 simulation and veriication tools. SDL signal exchange involves routing for signal traac that allows for nondeterminism in communication path selection. The communication path selected may additionally be subject to a path constraint using SDL's via construct. We describe rst...

SDL claims to be a language for the description of open systems, allowing the integration of other components into an SDL system and that of an SDL system as a mere component into a greater unit. Indeed, SDL provides the possibility for the interaction of a system with its environment. Signals can be exchanged with the environment and in addition the developer may hide arbitrary actions inside ...

The Co-design is the process of generating a mixed hardware/software architecture starting from system-level model. This paper discusses the uses of SDL for the co-design of an ATM Network Interface Card (NIC). In this study, the initial specification is given in SDL. The architecture generation is made using Cosmos, a co-design tool for multiprocessor architecture. Several architectures are pr...