The consistency issues have been well studied in term of methodologies and technologies for the most popular interaction paradigm, namely the client-server. In the agent’s world such a paradigm is used as much as another one, the notification-observation, in which an active system notifies its status changes to registered observer agents. In the client-server paradigm, when a client invokes a r...

In conventional two-tier client-server databases, clients access and modify shared data resident in a common server. As the number of clients increases, the centralized database server can become a performance bottleneck. In order to overcome this scalability problem, a three-tier client-server configuration has been proposed that features the partitioning of clients into logical clusters. Here...

Phylojava is a graphic user interface devoted to edit and calculate phylogenetic trees. It is programmed in Java to allow portage on a wide-range systems and is based on a client-server architecture. Phylogenetic trees are computed on the remote server, and are sent via internet to the client that allows the user to handle alignments and phylogenetic trees. New phylogenetic methods can be easil...

The paper describes an application server evaluation and selection for software systems implementation using client-server technology. The multi layer application architecture has been illustrated and the definition of application server made. On the base of application server analysis assessment criteria were chosen and particularly described, and criteria were classified in 11 categories. An ...

Center for Information Technology Integration University of Michigan 519 West William Street Ann Arbor, MI 48103-4943 CITI Technical Report 97–5 Performance Modeling of the PeopleSoft MultiTier Remote Computing Architecture Yi-Chun Chu [email protected] Charles J. Antonelli [email protected] Toby J. Teorey [email protected] Complex client-server configurations being designed today requi...

In this paper, we discuss a Distributed Monte Carlo (DMC) tracking method which achieves real-time and accurate face tracking for wearable active vision systems. The DMC is an extension of sequential Monte Carlo approaches to a client-server distributed architecture. The client feeds back the results of tracking for use in the control of the wearable active camera with minimal delay, and the se...

This paper presents a novel framework for view-dependent streaming of multiresolution meshes. In contrast to conventional progressive streaming in which the resolution of a model changes globally, our server dynamically adjusts the transmission order of the detail data with respect to the client’s current viewpoint. By extending the truly selective refinement scheme for progressive meshes to a ...

In this paper, we will discuss business relevance factors, architectural concepts, tool approaches, and user-interface samples of the GroupFlow environment. GroupFlow offers business process and technology frameworks to set up versatile and flexible workflow systems for distributed information management within organizations and their outside communication partners. We regard the synergetic app...

We present the implementation of a communication architecture for accessing TCP/IP networks (mainly Internet) through GSM links. We exploit the existing and widely used TCP/IP communication architecture, but also take into account the specific features of wireless links and GSM networks. Our architecture is based in the indirect model of client/server interaction, where an intermediate element ...

We describe an architecture for a database service that does not assume that the service provider can be trusted. Unlike other architectures that address this problem, this architecture, which we call blind custodians, does not rely on encryption. Instead, it offers confidentiality by means of information dissociation: The server only stores “fragments” of information that are considered safe (...