Clean energy harvesting and usage has gained considerable attention in the last few decades. While the horizontal axis wind turbines have been used extensively, they have certain defects and functional limitations. In the present paper, a novel oscillatory wind turbine is proposed. The conceptual design of the new turbine together with its configuration is explained. Dynamical equations of the ...

Ontology aims to organize knowledge of specific domain and provides a definition for the vocabularies and their relationships. Ontology plays an important role in the construction of database, it can be used to extend the classical model of databases. Several approaches were proposed to build database based on ontology structure. This Database called ’Ontology Based Data Base’ (OBDB) stores ont...

A Proposed Definition Computers are special technology and they raise some special ethical issues. In this essay I will discuss what makes computers different from other technology and how this difference makes a difference in ethical considerations. In particular, I want to characterize computer ethics and show why this emerging field is both intellectually interesting and enormously important...

Recent studies have shown that the existence of a poor requirements elicitation or the lack of this activity, during the information system development, have generated a series of system failures and resulted in unsatisfied customers. Among several reasons, the no user participation in the conceptual modelling process stands out. Another important issue is considering the need for creating a co...

The final products/maps of any synergistic geo-scientific interpretation project of an E&P company are stored as CGM (Computer Graphics Meta) files. These include (1) time and depth maps at various levels and (2) maps of sand extent and thickness in established or development fields used for reserve estimates. Normally, CGM files for maps of former type are generated in various interpretation w...

This paper continues the discussion of maps for the future. Current computer-based maps are inadequate to represent the geographic environment. Therefore, a new generation of maps needs to be designed. These new maps must be customized, highly interactive, and realistic. The status of our research is presented together with our effort in developing a prototype multiple source, quality, and medi...

This paper considers a group of preservice teachers’ construction of concept maps derived from y=x+5 and y= x with emphasis on their conceptual understanding of function. The two statements are perceived to represent a number of different concepts with indications of compartmentalized knowledge structures that might prevent the preservice teachers from building rich conceptual structures. The p...

Learning Content Management Systems (LCMS) store and manage e-learning content and play an important role in the development of Distance Learning technology. ROSA (Repository of Objects with Semantic Access) is a LCMS that provides the creation, storage, reuse, retrieval and management of learning objects (LO). In ROSA, course structure and content (LOs) are organized according to Conceptual Ma...

Learners working on the creation of conceptual maps become involved in a creative learning activity that involves “making sense” of new concepts and their relationships through modelling. These models can be seen as representations of the learners’ understanding of a particular topic domain. During subsequent learning activities, students can reflect upon the models they have built. In addition...