Over recent years, the number of portable devices, like Personal Digital Assistants and cell-phones, has increased dramatically. Thus, there is a growing demand for information management services to be accessible via portable devices that make use of wireless networks to connect to distributed servers. Also, the lack of a keyboard and a mouse in hand-held devices result in slow human-machine i...

Secure communication architecture is client-server based and not peer-to-peer based. NATs and firewalls tamper with or inspect data packets and that runs afoul with security protocols, such as IPSec and SSL/TLS. Client-server based architecture is not suitable for very high data rates when the server becomes a bottleneck in the communication. This architecture is not scalable and a single point...

ÐIn this paper, we propose and experimentally evaluate the use of the client-server database paradigm for real-time processing. To date, the study of transaction processing with time constraints has mostly been restricted to centralized or asingle-nodeo systems. Recently, client-server databases have exploited locality of data accesses in real-world applications to successfully provide reduced ...

Abstract This paper describes the architecture of a weather routing system consisting two key elements: onboard monitoring and route optimiser sub-systems. The former is responsible for collecting various measurements, such as current ship position or motion variables. These data, when gathered processed, are then used fine-tuning model. model, together with forecasts, utilised by multi-objecti...

Client / Server distribution in (software) design environments can be achieved by distributing an underlying repository database management system. Several alternative approaches for such a distribution exist, which diier in the layer of the architecture at which client / server communication takes place. We discuss two approaches | query-server and page-server | we have studied in the context ...

The main contribution of the poster, which is shortly outlined in the following, is to offer a definition for Peerto-Peer networking and to make the differences to common so called Client/Server-architectures clear. With this definition we are able to classify currently existing networking concepts in the Internet either as “Pure” Peer-to-Peer, or "Hybrid" Peer-to-Peer or Client/Server architec...

Selection of subagents Location specific service using GPS (or A-GPS) Experiments/Evaluations under real environment A Toolkit for developing a Spoken Dialog System (SDS) Server-and-Client architecture Each server can communicate with the other servers Aim of this study SDS as a “generalist” is constructed by a huge amount of SDSs as a “specialist” Specialist: Task-dependent dialog, location-de...

Current client-server object database management systems employ either a page server or an object server architecture. Both of these architectures have their respective strengths, but they also have key drawbacks for important system and workload configurations. We propose a new hybrid server architecture which combines the best features of both page server and object server architectures while...

Large buildings, sprawling campuses and multiple remote sites have led to an explosion in the number of IP networks for corporate computing. Workgroups are spread over multiple networks. Servers are configured with multiple network interfaces in an attempt to optimize access. When geographic or capacity issues arise, separate servers which replicate desired functionality are placed in network p...

We propose a solution for the management of multiresolution data in a mobile spatial information visualization system. This system has a client server architecture and is characterized by a slow communication link. Our solution is based on use of increments, i.e. the ”difference” between two datasets with different levels of detail. It allows reuse of locally available data and reduces the amou...