In this paper we present a parallel implementation of T–Coffee — a widely used multiple sequence alignment package. Our software supports a majority of options provided by the sequential program, including the 3D–coffee mode, and uses a message passing paradigm to distribute computations and memory. The main stages of T–Coffee, that is library generation and progressive alignment, have been par...

J-DOS provides and integrated JAVA environment for the execution of a program across an interconnected network of heterogeneous computers. The system provides a file system, shared memory and a distributed execution scheme, all of which is transparent to the user. The framework used to provide these service is sufficiently general as to allow the provision of extra services by the user. We desc...

In this research article we discuss the protocols, architecture and propose the design of Network Domain Security (NDS) model for IP Multimedia Subsystem (IMS). The IMS is standardized by 3GPP (Third Generation Partnership Project) and 3GPP2 as next generation service delivery platform developed for IP technology on top of all access networks including mobile and fixed networks. The architectur...

In an ideal world, there is time for all members of an intergenerational design team of children and adults to present, aggregate, and evaluate the suggestions that come out of work done with a design target concurrently by subgroups during a session. However, when presented with either a relatively large set of features or not enough copies of prototypes to distribute, time or resource constra...

Luleå University of Technology has for the last few years deployed a net-based learning environment, mStar, to distribute courses to students independent of time and geographic distance. The mStar enviroment gives remotely attending students equal possibilities as traditionally attending students to take an active part of a course, as well as enhancing the learning experience for all students. ...

Placement is a key step in VLSI physical design cycle. With aggressive scaling if VLSI to Very Deep submicron level lead to higher power density which lead to generation on non uniform thermal map and hotspots. This scenario represent an important challenge in VLSI physical design to generate a layout that distribute temperature uniformly while optimizing traditional metrics like area, power an...

High Performance Fortran is a dataparallel language that allows the user to specify the parallelism in his program. It is not always easy to extract the parallelism in a given program. To help the user, an automatic loop parallelizer has been developed : Bouclettes. Bouclettes has been written to validate some scheduling and mapping techniques that are mentioned in this paper. A Fortran 77 loop...

In this paper we give an overview and a comparison of two parallel algorithms for the state space generation in stochastic modeling on common classes of multiprocessors In this context state space generation simply means constructing a graph which usually gets extremely large On shared memory machines the key problem for a parallelization is the implementation of a shared data structure which e...

Direct manipulation is the key concept of interaction with systems that use graphics to communicate with the user. The latest generation of such systems supports also interaction with other modalities, i.e., text and figure captions. However, the effects of interaction within one modality must be reflected in the other modalities in order to keep the presentation consistent. Although some appro...

This paper describes DIDO, a system we have developed to carry out exploratory learning of unfamiliar domains without assistance from an external teacher. The program incorporates novel approaches to experience generation and representation generation. The experience generator uses a heuristic based on Shannon's uncertainty function to find informative examples. The representation generator mak...