The lineage of a datum records its processing history. Because such information can be used to trace the source of anomalies and errors in processed data sets, it is valuable to users for a variety of applications including investigation of anomalies and debugging. Traditional data lineage approaches rely on metadata. However, metadata does not scale well to fine-grained lineage, especially in ...

Introduction: This paper deals with the key elements that should be included in a personalized learning environment (PLE) to assist tutors in the effective development of online tutoring. Materials and methods: Key elements are defined from a quality management perspective and applied within the context of an action-research study, to develop a tutoring model supported on a personalized learnin...

A transaction is a set of read and write comnands surrounded by BEGIN and END, and these structured commands are sent by a client to the file system. To ensure successful transaction update, it should have an atomic property and be processed in serially ordered fashion. The purpose of this paper is to develop a file system which has realtime attributes and wkich can support nested transaction s...

Location-aware services using data mining techniques are recent research topics where rules from the data are extracted to provide interesting information. In addition, multi-agent systems are applied in location-based service for autonomous interaction of the system. Different data mining techniques are applied for knowledge discovery from location-based services. However, wireless environment...

A mobile environment is weakly-connected, characterized by low communication bandwidth and poor connectivity. Conventional paradigm for sur ng mobile web documents is ine ective since portions of a document could be corrupted during transmission and it is expensive to retransmit the whole document. It is important that the high content-bearing portions should be transmitted successfully so that...

Digital libraries are a repository of documents that are large volumes of integrated text, image, video and sound data. In such an environment, users may not have an eecient access mechanisms for the data, and in some cases may not even know what is available and how and where it is located. To facilitate the users in retrieving the documents from this vast information base, digital libraries m...

This short paper provides an introduction to the European Union funded OPHELIA (Open Platform and meTHodologies for deVELopment tools and IntegrAtion in a distributed environment) project (IST-2000-28402-2000-20002) that began in October 2001. OPHELIA aims to produce a platform definition that will support software engineering in a distributed environment and the integration of t oolsets across...

IT enabled teaching and learning systems have been widely used in higher education institutions. This paper describes how the e-learning environment, such as myCourses, can support teaching higher-order thinking. The theme of this study is the design of organizational structures of teaching and learning artifacts for higher-order thinking. The paper proposes a model of thinking inquiry-based st...

We present iAppraise: an open-source framework that enables the use of eye-tracking for MT evaluation. It connects Appraise, an opensource toolkit for MT evaluation, to a low-cost eye-tracking device, to make its usage accessible to a broader audience. It also provides a set of tools for extracting and exploiting gaze data, which facilitate eye-tracking analysis. In this paper, we describe diff...

Multiscale modelling as an emerging modelling paradigm is now widely regarded as a promising and powerful tool in various disciplines. However, a multiscale model is usually much more difficult to develop than a single-scale model due to a range of challenges. This work presents a methodology to facilitate the development of multiscale models, which comprises three main modelling steps, namely ...