This paper describes the Learning Resources Affective Recommender, a widget that recommends resources to the learner based on her current affective state and her learning objectives. The widget is meant to be used in a Personalized Learning Environment in combination with widgets to search for resources. The architecture that supports the widget follows a client-server pattern, with the widget ...

It's the purpose of this article to explain how the "Client/Server" architecture is really a fundamental enabling approach that provides the most flexible framework for using new technologies like the World Wide Web, as they come along. The old paradigm of host centric, time shared computing has given way to a new client/server approach, which is message based and modular. The examples below sh...

The WeblabSim system uses a three-tier design based on the iLab Shared Architecture (Figure 1). It consists of a client applet that lets users configure simulations, a laboratory server that runs them, and a generic service broker that mediates between the two through SOAP-based web services. We have implemented a graphical Java client applet, based on the client used by the MIT Microelectronic...

The Internet, which can be defined as a huge network of networks both wired and wireless, uses the Internet Protocol Suite (TCP/IP) to make information available beyond geographical boundaries. Computing devices all through the world connect to the World Wide Web via the Client Server architecture. In this architecture, the client requests some information from a web server through a web browse...

With the popularity of personal computers and powerful workstations, today’s users are no longer satisfied with the traditional data processing. They demand eagerly to putting up graphics on existing applications, putting a lot of pressure in system re-engineering. The Client/Server architecture is a less risky and less costly approach in adding a Graphical User Interface for users. The develop...

Multimedia service is pervasive on the Internet now and continues to grow rapidly. Most multimedia service provider systems have adopted a typical system architecture in which the storage devices are attached privately to the server. When a client browses some multimedia data from the server, data should be fetched from the storage devices and then forwarded to the client by the server. Unfortu...

Typically Multi-User Object-Oriented Environments (MOOs) are implemented using a client-server architecture, where a centralized server maintains the MOO state. Such architecture may limit the scalability of the MOO. This paper discusses the role of object migration and replication in the implementation of scalable MOOs.

The submitting of OPC (OLE for Process Control) has promoted the progress of the data collection in process control and industrial automation, and formulated the industry standard for the process real-time data exchange. Aiming at the key problem of ensuring the use of application program as OPC client to link multi-remote OPC server and real-time collect process data in control system, OPC tec...

Database outsourcing is an idea to eliminate the burden of database management from organizations. Since data is a critical asset of organizations, preserving its privacy from outside adversary and untrusted server should be warranted. In this paper, we present a distributed scheme based on storing shares of data on different servers and separating indexes from data on a distinct server. Shamir...