Before the spread of web platform and standard technologies (http, Java, XML, Corba, UML, etc.), many companies developed their client/server application by means of integrated development environment (i.e.: CASE tools) that allowed high productivity and cross-platform code generation. Of against, such products imposed a series of ties: use of owner programming languages; generation of redundan...

A specific task of distributed and parallel Information Systems is workflow management. In particular, workflow management systems execute business processes that run on top of distributed and parallel Information Systems. Parallelism is due to performance requirements and involves data and applications that are spread across a heterogeneous, distributed computing environment. Heterogeneity and...

Parallel corpora are important resources for most Natural Language processing tasks. From the common applications, like machine translation, to the usually mono-lingual tasks as paraphrase detection and word sense disambiguation, most researchers are using massive parallel corpora. Thus, the availability of an efficient way to manage them is very important. This paper presents a ClientServer ar...

Constant innovation and product evolution in the area of embedded systems necessitates educational institutions and other training providers to continuingly re-assess the content and delivery of engineering curricula. Increasingly web based distance education courses are on offer, augmented by the provision of remote experimentation laboratories, facilitating distant access to campus based phys...

This paper presents a robust client/server implementation of a word sense disambiguator for English. This system associates a word with its meaning in a given context using dictionaries as tagged corpora in order to extract semantic disambiguation rules. Semantic rules are used as input of a semantic application program which encodes a linguistic strategy in order to select the best disambiguat...

In this paper we describe an architecture for a multi-client, multi-channel video streaming server targeted at the security market. For each connected client, the best selection of available compressed video streams per channel is made, optimizing the perceived quality of the video channels requested by the client. We propose techniques to scale the bitrate per video stream and introduce a sche...

Client disks ure a valuable resource that ure not adequately exploited by current client-server ciatabase systems. In this papeG we propose the use of client disks for caching database pages in an extended cache architecture. We describe four algorithms .fi)r managing disk caches and investigate the tradeoffs inherent in keeping a large volume of disk-cached data consistent using u detailed sim...

This paper presents a content−based multimedia indexing and retrieval framework designed for mobile platforms running Symbian−based operating system. It is mainly developed by focusing on mobile platform restrictions and Symbian features. The proposed framework is built on a client−server architecture, where the client side basically consists of the user interface and controllers, and the serve...

SAP R/3 is a multi-tier client/server application which supports and simplifies business applications in areas of finance, production, distribution, sales, and human resources. It recently has become very popular worldwide, and in many cases drives the purchase of significant amounts of UNIX hardware. It’s multi-tier architecture typifies the strategies of mission critical applications implemen...

This paper documents the development of a robust, scalable networking infrastructure for a multiplayer game developed using Pygame [1] and PyOpenGL [2] in the Python programming language. The work undertaken by the authors involves developing a networking library from the ground up for an open source multiplayer game called Spacewar [3] aimed at eliminating any single point of failure vulnerabi...