ppxscal/embedding_network huggingface dataset:
Learning to collaborate in a computer-mediated setting: observing a model beats learning from being scripted
Authors: Nikol Rummel, Hans Spada, Sabine Hauser
Venue: Proceedings of the 7th international conference on Learning sciences (2006)

In an earlier study we had tested if observing a model collaboration or following a collaboration script could improve students' subsequent collaboration in a computer-mediated setting and promote their knowledge of what makes good collaboration. Both model and script showed positive effects. The current study was designed to further probe the effects of model and script by comparing them to conditions (model-plus, script-plus) in which the learning was further supported by providing elaboration support (instructional prompts and guided self-explanation). 40 dyads were tested, 8 in each of the following conditions: model plus elaboration, model, script plus elaboration, script, control. Observing a model collaboration with elaboration support yielded the best results over all other conditions on several measures of the quality of collaborative process and on outcome variables. Model without elaboration was second best. The results for the script conditions were mixed; on some variables even below those of the control condition.
A paper-based interface for video browsing and retrieval
Authors: J. Graham, J. J. Hull
Venue: Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1 (2003)

A paper-based interface for browsing video is proposed. A paper document shows key frames selected from a video, a transcript for the parallel audio track, and bar codes that, when scanned, invoke a multimedia player. The paper document provides a stand-alone representation for a video recording that lets a user both understand the content of the file and replay only selected parts of the multimedia that are necessary to gain a better understanding. This approach applies the two-dimensional display characteristics of a newspaper to multimedia retrieval. By so doing, the user's browsing and search efficiency is greatly improved. This poster describes an implementation of the video paper system using a pocket PC with a bar code reader as the remote control device and an archive of video recordings on the pocket PC or an external server.
Intelligent modeling and simulation of flexible assembly systems
Authors: Sk Ahad Ali, Hamid Seifoddini, Hong Sun
Venue: Proceedings of the 37th conference on Winter simulation (2005)

A combination of product mix and production volume is analyzed using a reconfigurable simulation model aiming to improve the performance and optimal designing requirements. The performance under different production scenarios is developed to find the optimal combination of product mix to meet future customer demands. This research provides a re-configurable assembly system modeling by adding flexibility and evaluates alternative designs. The best satisfaction of the production requirements under dynamic production is validated with real application.
Correlations between production process, states and mechanical properties of microspecimens made of zirconia
Authors: B. Kasanick&#x00e1;, M. M&#x00fc;ller, M. Auhorn, V. Schulze, W. Bauer, T. Beck, H. J. Ritzhaupt-Kleissl, D. L&#x00f6;he
Venue: Microsystem Technologies (2006)

For a safe design of micromechanical components, a reliable database of their properties is required. The existing material properties of macroscopic specimens normally cannot be used due to the neglect of some important aspects of the &#x201c;micro world&#x201d;, e.g. the ratio of surface to volume is much higher which results in a larger influence of surface defects on the material strength. Detailed analysis of the microstructure and surface topography of microcomponents in combination with their mechanical properties is very expedient for straight-forward optimization of the manufacturing process. Using the resulting data of the properties investigated, correlations between production process, states and mechanical properties of the micro bending specimens made of ZrO2 using low-pressure injection molding were identified. These correlations will be used to established a concept for dimensioning of mechanically loaded microparts.
The role of student tasks in accessing cognitive media types
Authors: Michael Byrne, Mark Guzdial, Preetha Ram, Richard Catrambone, Ashwin Ram, John Stasko, Gordon Shippey, Florian Albrecht
Venue: Proceedings of the 1996 international conference on Learning sciences (1996)

We believe that identifying media by their cognitive roles (e.g., definition, explanation, pseudo-code, visualization) can improve comprehension and usability in hypermedia systems designed for learning. We refer to media links organized around their cognitive role as cognitive media types [Recker, Ram, Shikano, Li, & Stasko, 1995]. Our hypothesis is that the goals that students bring to the learning task will affect how they will use the hypermedia support system [Ram & Leake, 1995]. We explored student use of a hypermedia system based on cognitive media types where students performed different orienting tasks: undirected, browsing in order to answer specific questions, problem-solving, and problem-solving with prompted self-explanations. We found significant differences in use behavior between problem-solving and browsing students, though no learning differences.
Impact of fMRI Acoustic Noise on the Functional Anatomy of Visual Mental Imagery
Authors: A. Mazard, B. Mazoyer, O. Etard, N. Tzourio-mazoyer, S. M. Kosslyn, E. Mellet
Venue: Journal of Cognitive Neuroscience (2002)

One drawback of functional magnetic resonance imaging (fMRI) is that the subject must endure intense noise during testing. We examined the possible role of such noise on the activation of early visual cortex during visual mental imagery. We postulated that noise may require subjects to work harder to pay attention to the task, which in turn could alter the activation pattern found in a silent environment. To test this hypothesis, we used positron emission tomography (PET) to monitor regional Cerebral Blood Flow (rCBF) of six subjects while they performed an imagery task either in a silent environment or in an "fMRI-like" noisy environment. Both noisy and silent imagery conditions, as compared to their respective baselines, resulted in activation of a bilateral fronto-parietal network (related to spatial processing), a bilateral inferior temporal area (related to shape processing), and deactivation of anterior calcarine cortex. Among the visual areas, rCBF increased in the most posterior part of the calcarine cortex, but at level just below the statistical threshold. However, blood flow values in the calcarine cortex during the silent imagery condition (but not the noisy imagery condition) were strongly negatively correlated with accuracy; the more challenging subjects found the task, the more strongly the calcarine cortex was activated. The subjects made more errors in the noisy condition than in the silent condition, and a direct comparison of the two conditions revealed that noise resulted in an increase in rCBF in the anterior cingulate cortex (involved in performance monitoring) and in the Wernicke's area (required to encode the verbal cues used in the task). These results thus demonstrate a nonadditive effect of fMRI gradient noise, resulting in a slight but significant effect on both performance and the neural activation pattern.
Low Power Oriented Test Modification and Compression Techniques for Scan Based Core Testing
Authors: Terumine Hayashi, Naotsugu Ikeda, Tsuyoshi Shinogi, Haruhiko Takase, Hidehiko Kita
Venue: Proceedings of the 15th Asian Test Symposium (2006)

This paper proposes effective techniques for reducing not only test data volume but also scan-in transitions that are closely related to power dissipation. First, we adopt a new test smoothing algorithm that can reduce scan-in transitions through test vector modification. Second, we propose a test compression method that can reduce test data volume while keeping down the increase of transitions as small as possible. The effectiveness of the proposed techniques is shown through experiments for ISCAS'89 benchmark circuits.
Visualization of music impression in facial expression to represent emotion
Authors: Takafumi Nakanishi, Takashi Kitagawa
Venue: Proceedings of the 3rd Asia-Pacific conference on Conceptual modelling - Volume 53 (2006)

In this paper, we propose a visualization method of music impression in facial expression to represent emotion. We apply facial expression to represent the complicated and mixed emotions. This method can generate facial expression corresponding to impressions of music data by measurement of relationship between each basic emotion for facial expression and impressions extracted from music data. The feature of this method is a realization of an integration between music data and the facial expression that convey various emotions effectively. One of the important issues is a realization of communication media corresponding to human Kansei with less difficulty for a user. Facial expression can express complicated emotions with which various emotions are mixed. Assuming that an integration between existing mediadata and facial expression is possible, visualization corresponding to human Kansei with less difficulty realized for a user.
Telederm: Enhancing Dermatological Diagnosis for Rural and Remote Communities
Authors: Monica H. Ou, Geoff A. W. West, Mihai Lazarescu, Chris Clay
Venue: Proceedings of the 19th IEEE Symposium on Computer-Based Medical Systems (2006)

This paper describes techniques used in a Web-based decision support system to enhance dermatological diagnosis for rural and remote communities. We proposed a technique to improve the query representation and shorten the length of the query process, and a knowledge validation technique to help the domain expert supervise and maintain a consistent knowledge base. Experiments were conducted to test the effectiveness of each technique. Results indicated that the new querying technique improves a decision tree query approach. In addition, the results showed that supervised knowledge updating can improve the identification and handling of ambiguous cases to produce 100% correct classification.
Dynamics of neural networks with variable coefficients and time-varying delays
Authors: Haijun Jiang, Zhidong Teng
Venue: Neural Networks (2006)

This paper studies the general neural networks dynamical systems with variable coefficients and time-varying delays. By applying the Young inequality technique, Dini derivative and introducing many real parameters, and estimating the upper bound of solutions of the system, a series of new and useful criteria on the boundedness, global exponential stability and the existence and global exponential stability of the periodic solutions are established. Particularly, when the system degenerates into the autonomous case, the new criteria on the existence, uniqueness and global exponential stability of the equilibrium points are obtained. The results obtained in this paper extend and generalize the corresponding results existing in previous literature.
The development of self-directed learning strategies in problem-based learning
Authors: Cindy E. Hmelo, Nathalie C. Coté
Venue: Proceedings of the 1996 international conference on Learning sciences (1996)

Students often leave school without the skills needed for lifelong learning. This is particularly problematic in technical fields such as medicine and engineering where the knowledge is continually changing and advancing [Eden, et al., 1996]. To prepare students for the lifelong learning required for success in such fields, students need to have experience in self-directed learning (SDL) while in school. An innovative approach to learning that explicitly does this is problem-based learning, an educational methodology that applies cognitive science theory to the real world setting of education by having students learn in the context of solving complex problems. Problem-based learning is being used at many medical schools and is increasingly being applied to other settings [Barrows, 1985; Williams, 1993]. Because the problems used are complex, students work in groups, where they pool their expertise and experience and together grapple with the complexities of the issues that must be considered. Facilitators guide student reflection on these experiences, facilitating learning of the cognitive skills needed for problem solving and SDL. Because students direct their learning, skills needed for life-long learning are also acquired, as they manage their learning goals while coping with the problems they are trying to solve [Barrows, 1985]. In this paper, we present a model of self-directed learning and the results of a study that examines components of this model in the context of medical education.
Continuous Human Action Segmentation and Recognition Using a Spatio-Temporal Probabilistic Framework
Authors: Duan-Yu Chen, Hong-Yuan Mark Liao, Sheng-Wen Shih
Venue: Proceedings of the Eighth IEEE International Symposium on Multimedia (2006)

In this paper, a framework of automatic human action segmentation and recognition in continuous action sequences is proposed. A star-like figure is proposed to effectively represent the extremities in the silhouette of human body. The human action, thus, is recorded as a sequence of the star-like figure parameters, which is used for action modeling. To model human actions in a compact manner while characterizing their spatio-temporal distributions, star-like figure parameters are represented by Gaussian mixture models (GMM). In addition, to address the intrinsic nature of temporal variations in a continuous action sequence, we transform the time sequence of star-like figure parameters into frequency domain by discrete cosine transform (DCT) and use only the first few coefficients to represent different temporal patterns with significant discriminating power. The performance shows that the proposed framework can recognize continuous human actions in an efficient way.
A routing protocol for hierarchical LEO/MEO satellite IP networks
Authors: Chao Chen, Eylem Ekici
Venue: Wireless Networks (2005)

The rapid growth of Internet-based applications pushes broadband satellite networks to carry on IP traffic. In previously proposed connectionless routing schemes in satellite networks, the metrics used to calculate the paths do not reflect the total delay a packet may experience. In this paper, a new Satellite Grouping and Routing Protocol (SGRP) is developed. In each snapshot period, SGRP divides Low Earth Orbit (LEO) satellites into groups according to the footprint area of the Medium Earth Orbit (MEO) satellites. Based on the delay reports sent by LEO satellites, MEO satellite managers compute the minimum-delay paths for their LEO members. Since the signaling traffic is physically separated from the data traffic, link congestion does not affect the responsiveness of delay reporting and routing table calculation. The snapshot and group formation methods as well as fast reacting mechanisms to address link congestion and satellite failures are described in detail. The performance of SGRP is evaluated through simulations and analysis.
On achieving fairness in the joint allocation of buffer and bandwidth resources: principles and algorithms
Authors: Yunkai Zhou, Harish Sethu
Venue: Computer Networks: The International Journal of Computer and Telecommunications Networking (2006)

Fairness in network traffic management can improve the isolation between traffic streams, offer a more predictable performance, eliminate certain kinds of transient bottlenecks and may serve as a critical component of a strategy to achieve certain guaranteed services such as delay bounds and minimum bandwidths. While fairness in bandwidth allocation over a shared link has been studied extensively, the desired eventual goal is overall fairness in the use of all the resources in the network. This paper is concerned with achieving fairness in the joint allocation of buffer and bandwidth resources. Although a large variety of buffer management strategies have been proposed in the research literature, a provably fair and practical algorithm based on a rigorously defined theoretical framework does not exist. In this paper, we describe such a framework and a new, provably fair, and practical strategy for the joint allocation of buffer and bandwidth resources using the max-rain notion of fairness. Through simulation experiments using real gateway traffic and video traffic traces, we demonstrate the improved fairness of our strategy in comparison to several popular buffer management algorithms. Joint management of buffer and bandwidth resources involves both an entry policy into the buffer and an exit policy through the output link. Our study reveals that, even though algorithms such as WFQ and DRR that can serve as fair exit policies have received significantly more attention, a fair entry policy is more critical than a fair exit policy to the over-all fairness goal when buffer resources are constrained.
Simulation-based scheduling for parcel consolidation terminals: a comparison of iterative improvement and simulated annealing
Authors: Douglas L. McWilliams
Venue: Proceedings of the 37th conference on Winter simulation (2005)

This research explores the application of a simulation-based scheduling algorithm to generate unload schedules for processing feeder trailers in a parcel consolidation terminal. The study compares the performance of iterative improvement and simulated annealing to produce quality schedules. The paper reports the results from a number of experimental test problems.
A resource reconciliation mechanism for a manufacuring federation coordinated using an MRP/ERP system
Authors: Seungyub Lee, Richard A. Wysk
Venue: Proceedings of the 36th conference on Winter simulation (2004)

This paper presents a top-down mechanism for coordinating Distributed Discrete Event Simulation (DDES) models using an MRP/ERP system as the federation coordinator. The same MRP/ERP system, which is typically used as a coordination tool for interactions between complex highly variable manufacturing systems, serves to coordinate and synchronize complex highly variable simulation models of these same systems. This research focuses on enabling each system entity modeled by DDES models to constantly correct its performance with respect to reference trajectories which consist of planned orders and the size of a time bucket generated by an MRP/ERP system, and trigger a global coordinator which consists of the MRP/ERP system and adapter if necessitated by any discrepancies observed by the entity through simulation models. A global coordinator can synchronize timing of DDES models and provide adaptive time buckets using the cost-based mathematical model and corrected plans using the updated time bucket.
A distributed model for electrical substation automation based on multi-agents technology
Authors: Klaus de Geus, Alexandre M. de Souza, Flavio Milsztajn, Carlos J. J. Kolb, Jose H. Dometerco, Ciro de C. Braga, Emerson L. Parolin, Arlenio C. Frisch, Luiz K. Jr. Fortunato, Augusto Jr. Erzinger, Marco A. Jonack, Anderson J. A. Guiera
Venue: Proceedings of the International Conference on Computational Inteligence for Modelling Control and Automation and International Conference on Intelligent Agents Web Technologies and International Commerce (2006)

The main purpose of this paper is to analyse distributed computing technology for substation automation systems. Based on performance comparative results obtained in laboratory, a specific model for distributed substation automation is proposed considering the current model employed at Copel - Companhia Paranaense de Energia. The proposed model is based on the multi-agents technology, which has lately received special attention in the development of distributed systems with local intelligence. The model includes a negotiation schema based on which the control of individual substations is assigned to specific system operators.
Design and Development of Large Collapsible PET Water Cooler Bottles
Authors: S. H. Masood, V. Satyanarayana, U. Erbulut
Venue: Proceedings of the International Conference on Computer Graphics, Imaging and Visualisation (2006)

The vast majority of 15-litre water cooler bottles produced in the world today are made of blow moulded polycarbonate (PC) plastic and are returnable / refillable. This paper presents the design and development of a collapsible, recyclable 15-litre blow moulded water cooler bottle made of PET plastic to replace the traditional refillable type polycarbonate bottle. The innovative bottle design geometry allows it to be easily crushed after use, and also offers several advantages in terms of light weight, stability and environmental amiability. The paper presents the detailed process of design, analysis and optimisation using the finite element analysis software considering structural stability and crushing behaviour under various orientations and loading conditions.
The TCPN-based Verification of Temporal Consistency in Web Service Process
Authors: JIANG Hao, SUN Zhi-jian
Venue: Proceedings of the IEEE International Conference on e-Business Engineering (2006)

In recent years, time management is considered indispensable when tackling complex web-based business collaborations between enterprises in e-business environments. Unfortunately, current researches mainly focus on the modeling and analyzing of Web Service process, while ignoring the time factors. With many kinds of specifications of Web Service process, such as BPEL, WSFL, as a result, Web Services can be easily integrated. However, in practice many Web Services for e-business have temporal restrictions. Furthermore, the verification of temporal consistency becomes more complex. Based on Temporal constraint Petri net (TCPN) model of Web Service process and temporal reasoning rules, the paper presents a method for verifying the temporal consistency in Web Service process, which can greatly enhance the time management functionality.
When Blue is Larger than Red: Colors Influence Numerical Cognition in Synesthesia
Authors: Roi Cohen Kadosh, Noam Sagiv, David E. J. Linden, Lynn C. Robertson, Gali Elinger, Avishai Henik
Venue: Journal of Cognitive Neuroscience (2005)

In synesthesia, certain stimuli ("inducers") may give rise to perceptual experience in additional modalities not normally associated with them ("concurrent"). For example, color&ndash;grapheme synesthetes automatically perceive achromatic numbers as colored (e.g., 7 is turquoise). Although synesthetes know when a given color matches the one evoked by a certain number, colors do not automatically give rise to any sort of number experience. The behavioral consequences of synesthesia have been documented using Stroop-like paradigms, usually using color judgments. Owing to the unidirectional nature of the synesthetic experience, little has been done to obtain performance measures that could indicate whether bidirectional cross-activation occurs in synesthesia. Here it is shown that colors do implicitly evoke numerical magnitudes in color&ndash;grapheme synesthetes, but not in nonsynesthetic participants. It is proposed that bidirectional coactivation of brain areas is responsible for the links between color and magnitude processing in color&ndash;grapheme synesthesia and that unidirectional models of synesthesia might have to be revised.