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Moursund Mathematics Lecture Series. Dr. Jacob Lurie, Lecture 2: “Ambidexterity”
In classical algebraic geometry, there is often a stark difference between the behavior offields of characteristic zero (such as the complex numbers) and fields of characteristic p (such as finite fields). For example, the equation x^p = 1 has p distinct solutions over the field of complex numbers, but only one solution over any field [...]
Author(s): U O

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An Interactive, Multimedia Environment for Exploring Tonal Pitch Space
Because they depict relations among musical pitches, chords, and key, charts in Fred Lerdahl’s Tonal Pitch Space can be rendered more accurately and vividly with multimedia authoring software. My renderings enable a user to orient charts toward any specific key, trace any of numerous possible paths, determine the depth of embedding of any element in any tonal context, and compute distances between elements. Lerdahl’s analyses can be depicted more vividly by synchronizing graphic images with th
Author(s): Williams J. Kent

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Diagnostic models of intelligent tutor system for teaching skills to construct control object freque
In this paper one solution for teaching skills to construct the control object frequency characteristics method is described. Student’s mistakes are discovered and classified. Based on signal-parametric approach to fault diagnosis in dynamic systems mathematical diagnostic models which allow detecting mistake classes by comparing student calculated results and system calculated results are created. Features of proposed diagnostic models application are presented. Intelligent tutor system is dev
Author(s): Kulik Anatoly,Chukhray Andrey

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Introduction of Computer Studies to non-science university students: The Sri Lankan experience
Introduction of computer studies as a subject to students in the Faculties of Humanities and Social Sciences in Sri Lankan universities is a relatively recent experience. University of Kelaniya was the first university in Sri Lanka that offered computer studies as a subject to its Bachelor of Arts Degree programme starting in 2001. This paper attempts to analyze the relative performance of science and non-science students offering the same module under the new computer studies curriculum.
Author(s): de Silva Chandima H.

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Arguing for Freedom
Interviewed by host Alan Butler, Mark Thornton discusses his recent trip to the UK and the Oxford Union debate on the war on drugs, and more.

Integrating Collaborative Concept Mapping Tools with Group Memory and Retrieval Functions
The provision of shared visual representations is considered to be an important facilitator for creative processes in group working and learning scenarios. Although reusability is an inherent feature of computerised representations in general, a comparative analysis of existing tools shows clear deficits in this respect. We are convinced that reusability and thus sustainability of the results of co-constructive group work can be much enhanced by integrating visual environments with functions for
Author(s): Hoppe Ulrich,Gaßner Katrin

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Knowledge convergence in computer-mediated learning environments. Effects of collaboration scripts
One important aspect of collaborative learning environments is the convergence of participants of one learning group with respect to learning outcome. Studies show that learners rarely construct shared knowledge together. This experimental study analyzes two collaboration scripts that aim to facilitate knowledge convergence. A social script that prescribes different roles with specific, sequenced interactions and an epistemic script that prescribes different activities and their sequence with re
Author(s): Weinberger Armin,Fischer Frank,Mandl Heinz

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Identifying Coordination Agents for Collaborative Telelearning
This paper deals with identifying roles for coordination agents in a future collaborative telelearning environment. The current practice of students participating in a net-based simulation marketing game on-campus, is studied with an eye on designing a future collaborative telelearning environment where this same net-based simulation game will be central. The work described in this paper is situated within the theoretical foundations of computer supported collaborative learning (CSCL). In partic
Author(s): Wasson Barbara

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Internet Scout Project
In June 2000, the Fourteenth Symposium on Thermophysical Properties was held to review the progress of thermophysics over the last 100 years and to look forward to the next century of research and development in thermophysics. The National Institute of Standards and Technology (NIST) provides a special publication online covering the event, including overviews of topical issues by professionals in the field and several brief, invited essays on issues raised in the forum by panelists, audience pa
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Mixing Human and Software Agents: A Case Study
This paper describes a multi agent approach of the organisation of a collective activity within a pedagogical context. We consider pedagogical situations where students have to explicitly define the articulation of their collective work and then achieve the different tasks they have defined. Our objective is to support these students by taking some of these tasks in charge whilst making them work out such organisation features. For this purpose, we propose to consider that the group of students
Author(s): Taurisson Neil,Tchounikine Pierre

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Internet Scout Project
The Ocean Carbon-Cycle Model Intercomparison Project (OCMIP) goal is "to develop an international collaboration to improve the predictive capacity and accelerate development of global-scale, three-dimensional, ocean carbon-cycle models through standardized model evaluation and model intercomparison." Visitors to the site can learn about the objectives, reports, and other details about the two finished phases, OCMIP-1 and OCMIP-2, as well as details about the new phase, OCMIP-3. The website offer
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Supporting Learners’ Appropriation of a Web-Based Learning Curriculum
This article presents an approach and tools that can help learners appropriate a Web-based learning curriculum and become active participants in their learning. The approach is based on a detailed modeling of the curriculum and intends to equip the learners with different computer-based tools facilitating a multiple point of view perception of the curriculum, while promoting self evaluation and self regulation of the learners’ curriculum performance. The proposed architecture is generic and can
Author(s): Rasseneur-Coffinet Dorothee,Smyrniou Georgia,Tchou

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Reflections on Success: A retrospective of the mLearn conference series 2002-2005
mLearn is now in its fifth year. Although mobile learning has a much longer history, the inauguration of a conference for learning in the mobile age marked an important point in its development. This paper takes a retrospective look at the mLearn conferences from 2002 through to 2005; reflecting on our progress in order to facilitate the transition of mobile learning from a novel research concept into a viable means of providing meaningful learning opportunities “across generations and cultures
Author(s): Naismith Laura,Corlett Dan

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Δραστηριότητες Μοντελοποίησης με χρήση Η/Υ στη Β’θμια
Η εργασία αυτή επιχειρεί να αναδείξει την επιστημολογική αξία των μοντέλων, το ρόλο των Η/Υ στη σύγχρονη επιστημονική μοντελοποίηση και τις δυνατότητες διδακτικής αξιοποίησής τους. Σημειώνεται η έλλειψη σαφούς ανάδειξης της έννοιας του μοντέλου στη διδασκαλία των θετικώ
Author(s): Fessakis George,Dimitracopoulou Angelique,Kalabasi

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Internet Scout Project
This USGS website provides daily and periodic sediment data mainly for hydrologists and geomorphologists. The database includes station metadata, drainage basin area, geographic parameters, data anomalies, streamflow discharge, suspended-sediment discharge, and more. Users can find maps of average concentration of suspended sediment and of the many gaging stations located all around the United States. After obtaining the data from this website, researchers can analyze the data using their own an
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From the Environmental Remote Sensing Center at the University of Wisconsin Madison comes the Lake Water Monitoring and Analysis with Satellite Remote Sensing Web site. Researchers and their cooperators have developed a method of assessing the water quality of Wisconsin's lakes from space using satellite imagery. Visitors to the site can read about how this is actually done, view an interactive map of Wisconsin that presents the results in an easy-to-use interface, and view some very interesting
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When less is sometimes more: Optimal learning conditions are required for schema acquisition from mu
While it is usually claimed that multiple examples for the illustration of problem categories are a necessary prerequisite for schema acquisition, there is a lack of conclusive empirical evidence supporting this claim. Moreover, there are findings indicating that carefully designed one-example conditions may allow for profitable processes of example comparison as well. In line with this reasoning, we present an experiment – that builds up on a series of studies conducted by Quilici and Mayer (1
Author(s): Scheiter Katharina,Gerjets Peter

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Meanings for Fraction as Number - Measure by Exploring the Number Line
Construction of meanings for fraction as number-measure is studied during the implementation of exploratory tasks concerning comparison and ordering of fractions as well as operations with fractions. 12-year-old students were working collaboratively in groups of two with software that combines graphical and symbolic notation of fractions represented as points on the number line. Fractions as points and segments, ordering fractions as part of kinesthetic activities and abstracting the scaling of
Author(s): Psycharis Giorgos,Latsi Maria,Kynigos Chronis

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Carried by Lamont-Doherty Earth Observatory (LDEO) of Columbia University, the Petrological Database of the Ocean Floor is a National Science Foundation (NSF) funded research project that includes over 30,000 samples and over 700,000 chemical values from oceanic stations throughout the world. Samples can be searched by location, expedition name, ship name, sample characteristics, reference, or by chemistry. A typical result might include the sample id, description, age, date, tectonic setting, l
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Flexibility in macro-scripts for computer-supported collaborative learning
In the field of computer-supported collaborative learning (CSCL), scripts are designed to support collaboration among distant learners or co-present learners whose interactions are (at least partially) mediated by a computer. The rationale of scripts is to structure collaborative learning processes in order to trigger group interactions that may be rare in free collaboration. Fixing the degree of coercion is a delicate design choice: too rigid scripts would spoil the richness of collaborative in
Author(s): Dillenbourg Pierre,Tchounikine Pierre

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