Mapcar: a framework to support the elaboration of the conceptual model of a Knowledge Based System
Constructing a knowledge based system requires the identification of the conceptual primitives and problem-solving strategy that will permit capturing the expertise in an adapted way. This paper presents an approach to support the elaboration of such a conceptual model by data-abstraction. Our work is motivated by the objective of constructing models that correspond to how experts solve problems, which is required for some applications, as, for example, presenting problem-solving in an education
Internet Scout Project
One of the most important pieces of technology being used to search Iraq for evidence of weapons is a 48-year old spy plane. The U-2, which was first flown in the beginnings of the Cold War, has withstood the test of time and continues to be widely used by the US. This site provides details about the history of the U-2. It also describes many technical aspects involved in flights, such as the advanced sensor systems and pilot life support.
Internet Scout Project
This site, posted by the US Department of Energy's Sandia National Laboratories, "provides access to a comprehensive set of databases on metal-hydrogen systems, their properties, applications, literature sources, and profiles of organizations involved in metal-hydrogen development." Metal hydrides are important because they are commonly used in batteries and as hydrogen fuel storage cells for autos and power generation (a fossil fuel alternative). The technical part of the database has hydride m
Internet Scout Project
The Understanding the Universe Web site is part of Discovery.com's excellent educational resource DiscoverySchool.com site and is a joint effort with the American Museum of Natural History. This attractive site contains three major sections. The It's Awesome page has a time line of the universe that links to the Universe in One Year page -- a great way of learning the difficult concept of geologic time by showing that, if the history of the universe was compressed into one year, modern humans wo
Investigating human computer interaction issues in designing efficient virtual learning environments
Today, when an enormous number of computer-based systems exist, the human activities are being computer mediated. Usually, in designing the interface to those systems, the human-computer interaction is left behind without consideration. In this paper, a literature in human-computer interaction is to be reviewed and the technology aspect of human computer interaction is to be analyzed. Also, general design principles are to be reviewed. According to all these issues, recommendations to designing
Do two heads search better than one? Effects of student collaboration on Web search behavior and sea
This study compared Pairs of students with Single students in Web search tasks. The underlying hypothesis was that peer-to-peer collaboration encourages students to articulate their thoughts, which in turn has a facilitative effect on the regulation of the search process as well as search outcomes. Both hypotheses were supported by the results. Pairs located the target information more often and in less time than Singles did. Pairs also employed a richer repertoire of search strategies and were
Internet Scout Project
The page on the Ekati Diamond Mine, which is located in the Northwest Territories and is North America's only operating diamond mine, presents two sizes of satellite images and informational text. A nifty feature of the Ekati page is a section where users can compare the satellite imagery to ground images of particular features (e.g., tundra, glacial eskers, and heath) of the mine area. Other highlights include a satellite view of the excavated terraces and blast sites of this pit mine and a tim
Les graphes argumentatifs interactifs sur Internet : sont-ils plus efficaces comme média du débat
Nous présentons les résultats d'une expérience menée dans le cadre du projet européen SCALE. Le but de cette recherche était d'étudier l'influence du type d'utilisation du graphe argumentatif durant des débats pédagogiques sur Internet. Précisément, il s'agissait de savoir sur le graphe argumentatif était plus efficace lorsqu'il était utilisé comme médium du débat (C1) ou comme moyen de le représenter (C2). Dans cet objectif, nous avons évalué à l'aide d'une méthode original
Knowledge Convergence in Computer-Supported
Collaborative Learning: The Role of External Representat
This study investigates how two types of graphical representation tools influence the way in which learners use knowledge resources in two different collaboration conditions. In addition, the study explores the extent to which learners share knowledge with respect to individual outcomes under these different conditions. The study also analyzes the relationship between the use of knowledge resources and different types of knowledge. The type of external representation (content-specific vs. conten
Multiple Sclerosis - Cranial Nerves Exam - Hypoglossal (CN XII) Sub-exam - Patient 20
Janie is a 39-year-old Caucasian female who initially presented with weakness and L'Hermitte’s phenomena at the age of 35. Initially mistaken as a TIA, MRI of the brain revealed numerous plaques in the white matter suggesting Multiple Sclerosis. Her lumbar puncture initially failed to demonstrate the presence of oligoclonal bands, but since progression of the disease over the past few years bands have developed.
The CoVis Project: Building a Large-Scale Science Education Testbed
This paper describes the construction and research program of the Learning Through Collaborative Visualization (CoVis) Project. a testbed for exploring science education reform with telecommunications technology. The CoVis testbed is contrasted with other forms of cducational research in an "ecolo~yo f paradigms." which argues that testbeds are in fact a new setting for research with different requirements and challenges for the researcher. Two extended examples of telecommunications research ar
The greenhouse effect visualizer: a tool for the science classroom
The Greenhouse Effect Visualizer (GEV) is designed to help students visualize data sets related to the earth's energy balance. This work was inspired by the benefits scientific visualization have provided to scientists in discovering patterns and presenting the results of their work to broad communities. The hope is that scientific visualization can provide equal assistance to students trying to learn science. The philosophy underlying this approach links learning with practice. Hence, students
Neuropathy - Coordination Exam - Lower Extremities Sub-exam - Patient 7
This 61-year-old man has had slowly progressive gait disturbance and weakness of his legs for 14 years. He has developed a limp in both legs, and his feet trip on objects and on uneven floor surfaces resulting in falls. He feels uncoordinated and unbalanced especially in the dark. He has to use a cane to assist ambulation. For the last 10 years, he has had numbness and tingling in both lower extremities. This began in his toes and now has extended proximally to his knees.
Urinary Catheterization - Female
This video demonstrates the urinary catheterization procedure in a 63 year old female patient admitted to hospital with a complaint of urinary retention. The specific procedure shown is the two-way, indwelling Foley catheter. The video covers the patient interview, preparing oneself for the procedure following all universal precautions, preparation of the equipment tray, insertion of the catheter using and maintaining sterile technique, catheter removal and appropriate disposal of all used equip
This tutorial is designed to aid first and second year medical students learn how to interpret a complete blood count. It includes material on how the test is done, its general application and pitfalls in interpretation.
A Dynamic component-based approach to design and implement Grid Services
Regarded as the following step of conventional distributed computing, grid computing becomes more and more popular. It puts the focus on large-scale resource sharing, including new pervasive technologies.To allow heterogeneous entity to share their resource, and more interesting their information and their knowledge, it is necessary to propose solution for integration and interoperability. Our aim is to propose an approach viewing component like an abstraction of grid services.In this paper we t
Computers and Excellence in the Future of Education
Crossword - MTW Trees/Timber
Simple crossword suitable for first year and second year. The clues are based on trees and wood. Answers are not included.
An innovative teaching and learning environment for school mathematics
The paper presents the main characteristics, the background reference, and educational aims of an innovative teaching and learning environment designed and implemented for promoting arithmetic problems solving skills in children of compulsory school. The project is partially funded by the European Community Research and Development Project ITALES "Innovative Teaching and Learning Environments for Schools" (IST 2000-23356). The research addresses a sector (that of arithmetic problem solving) whi
Towards Collaborative Learning via Shared Artefacts over the Grid
The Web is the most pervasive collaborative technology in widespread use today; and its use to support eLearning has been highly successful. There are many web-based Virtual Learning Environments such as WebCT, FirstClass, and BlackBoard as well as associated web-based Managed Learning Environments. In the future, the Grid promises to provide an extremely powerful infrastructure allowing both learners and teachers to collaborate in various learning contexts and to share learning materials, lea