The goal of this paper is to use Knowledge Tracing to augment the results obtained from an experiment that investigated the effects of practice schedules using an intelligent tutoring system for fractions. Specifically, this experiment compared different practice schedules of multiple representations of fractions: representations were presented to students either in an interleaved or in a block...

While the availability of visual feedback is a well-known factor influencing the accuracy of rapid aiming movements, little is known about how vision might interact with a contextual variable like practice organization. In the current study, the interaction of concurrent visual feedback (CVF) and practice organization on aiming movement accuracy was investigated in the dominant limb of 40 colle...

Continuous and real-time learning is a difficult problem in robotics. To learn efficiently, it is important to recognize the current situation and learn appropriately for that context. To be effective, this requires the integration of a large number of sensorimotor and cognitive signals. So far, few principles on how to perform this integration have been proposed. Another limitation is the diff...

While efforts to address the management of chronic diseases in the context of large, urban hospitals are underway, the literature is silent on how to facilitate such efforts in the community clinics that provide services to many chronic-care patients who are medically underserved. We offer a contextualist framework for developing IT-enabled chronic care management in community clinics. To under...

Three realities (mindscapes) used in constructing knowledge and their traditional research methodologies are discussed as a basis for proposing a research agenda and strategy for rural education. In order to study rural education, the authors propose the use of conceptual empiricism and contextual appraisal consisting of four domains; personal (self), instruction (class), institutional (school)...

This paper is a comment on Contextual Design, a method frame proposed by Beyer & Holtzblatt (1998) for redesigning work in conjunction with developing technological support for this work. It is scrutinized in which ways Contextual Design is a participatory approach and in which ways Contextual Design is suitable for capturing practices, meanings and challenges in the work environments to be red...

Automatic Construction of a Contextual Valence Shifters Lexicon The research presented in this paper takes place in the field of Opinion Mining, which is mainly devoted to assigning a positive or negative label to a text or a sentence. The context of a highly polarized word plays an essential role, as it can modify its original polarity. The present work addresses this issue and focuses on the ...

In opinion mining, many linguistic structures, called contextual valence shifters, may modify the prior polarity of items. Some systems of sentiment analysis have tried to take these shifters into account, but few studies have focused on the identification of all these structures and their impact

Designing 3D objects from scratch is difficult, especially when the user intent is fuzzy and lacks a clear target form. We facilitate design by providing reference and inspiration from existing model contexts. We rethink model design as navigating through different possible combinations of part assemblies based on a large collection of pre-segmented 3D models. We propose an interactive sketch-t...