Some argue that biologically inspired algorithms are the future of solving difficult problems in computer science. Others strongly believe that the future lies in the exploration of mathematical foundations of problems at hand. The field of computer security tends to accept the latter view as a more appropriate approach due to its more workable validation and verification possibilities. The lac...

This paper discusses the potential of applying computer-animated instruction (CAnI) as an effective conceptual change strategy in teaching electrochemistry in comparison to conventional lecture-based instruction (CLI). The core assumption in this study is that conceptual change in learners is an active, constructive process that is enhanced by the pedagogic use of computer-animated images. The ...

Collaborative learning is a set of various approaches in education that involve joint intellectual effort by students or students and teachers. It opposed to the traditional 'direct transmission' model, in which learners are assumed to be passive, receptive, isolated receivers of knowledge and skills delivered by an external source. Today Computer-Supported Collaborative Learning (CSCL) is acti...

The notion of computer understanding of natural langu~e is examined relative to inference mechanisms designed to function in a language-free deep conceptual base ( Couceptual Dependent) . The concepeual analysis of a natural language sentence into tiffs conceptual base, and the nature o f the memory which stores and operates upon these conceptual structures are described from both theoretL~.al ...

Geographic maps have existed from early stages of human civilization. Various styles of visualizing the geographic information have evolved depending on the nature of information and the technology available for visualization. This has led to innumerable map styles. In this work we develop a technique to create maps by combining two-dimensional and three-dimensions information such that the res...

Conceptual maps have been used in many areas as a means of capturing and representing knowledge. Several authors have explored the use of visual tools to enhance the learning process. Thinking maps as well as frame games use visual patterns of relationships (learners thinking processes) to structure knowledge. Based on their graphical structure it is possible to recognize the thinking process(e...

This paper presents a Conceptual Graph (CG) framework to the Generation of Referring Expressions (GRE). Employing Conceptual Graphs as the underlying formalism allows a rigorous, semantically rich, approach to GRE. A number of advantages over existing work are discussed. The new framework is also used to revisit existing complexity results in a fully rigorous way, showing that the expressive po...

The EasyCPU environment was developed for teaching computer architecture to high school students of computer science. As a result of experience during the development, it was decided to perform research on the mental models that arise in the students as they learn. These mental models come from attempts by the students to make sense of the conceptual models presented to them by the software too...