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Institution

University of Waterloo

EducationWaterloo, Ontario, Canada
About: University of Waterloo is a education organization based out in Waterloo, Ontario, Canada. It is known for research contribution in the topics: Population & Poison control. The organization has 36093 authors who have published 93906 publications receiving 2948139 citations. The organization is also known as: UW & uwaterloo.


Papers
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Journal ArticleDOI
TL;DR: The results support a view of movement production as relatively specific to the past experience of the performer and the constraints of the task, and support a movement production mechanism that has access to an abstract representation of a base velocity profile.
Abstract: AUSTKA< T The underlying pirn-esses in movement organization and control were studied by varying the conditions under which arm movements were made. The three-dimensional movement trajectories of the following conditions were contrasted: pointing to a target with the index linger versus grasping a disk the same size as the target, grasping a fragile object versus a soil resilient object, and grasping a disk either to throw into a large box or place into a light litting well. Results showed that the arm trajectories, as represented by the resultant velocity profile of the wrist, varied considerably in their shape with the main factor being when peak velocity was reached as a function of the total duration of the movement. It appeared that when task demands required greater precision, the main deceleration phase of the trajectory was increased in duration. These results do not support a movement production mechanism that has access to an abstract representation of a base velocity profile and that creates trajectories by a simple scaling procedure in the temporal domain. Rather, the results support a view of movement production as relatively specific to the past experience of the performer and the constraints of the task. Ix's processus a la base du controlc el de ('organisation du mouvement out etc etudies en variant les conditions sous lesquelles les mouvements du bras etaient executes. Les trajectoires de mouvemenl tridimcnsionncl des conditions suivantes etaient niises en contraste: pointer une cible avee l'index versus saisir un disque de la meme taille que la cible; saisir un objet fragile versus un object elastique. mou; ct, saisir un disque suit pour le lancer dans une grnnde boitc soit le placer dans un puits bien ajustc. Les resultats indiquent que les trajectoires du bras, lelles que represenlees par le prolil de velocite resultant du poignel, varicnt considerablement dans leur forme avec le facteur principal apparaissant au moment ou 1c pic de velocite etait atteinl en tant que function de la duiee tolale du mouvement. Lorsque la tache requiert line plus grande precision la phase de deceleration principale dc la trajecloire augmente en duree. Cos resultats n'appuient pas un mccanisme dc production du mouvemenl ayant acccs a line representation abslraitc d'un prolil dc velocite dc base et creant des trajectoires par un procedc d'echelonncment simple dans le domaine temporcl. Cos resultats supported! plulol I \"idee d'unc production de mouvement coiiunc relativement specilique ii lexperience passcc du …

679 citations

Journal ArticleDOI
TL;DR: This survey delineates the limitations, give insights, research challenges and future opportunities to advance ML in networking, and jointly presents the application of diverse ML techniques in various key areas of networking across different network technologies.
Abstract: Machine Learning (ML) has been enjoying an unprecedented surge in applications that solve problems and enable automation in diverse domains. Primarily, this is due to the explosion in the availability of data, significant improvements in ML techniques, and advancement in computing capabilities. Undoubtedly, ML has been applied to various mundane and complex problems arising in network operation and management. There are various surveys on ML for specific areas in networking or for specific network technologies. This survey is original, since it jointly presents the application of diverse ML techniques in various key areas of networking across different network technologies. In this way, readers will benefit from a comprehensive discussion on the different learning paradigms and ML techniques applied to fundamental problems in networking, including traffic prediction, routing and classification, congestion control, resource and fault management, QoS and QoE management, and network security. Furthermore, this survey delineates the limitations, give insights, research challenges and future opportunities to advance ML in networking. Therefore, this is a timely contribution of the implications of ML for networking, that is pushing the barriers of autonomic network operation and management.

677 citations

Journal ArticleDOI
TL;DR: In this article, the authors reviewed and critically examined evidence related to parks and recreation as features of the built environment and the relationship of these settings to physical activity (PA) and reported an empirical relationship between parks or recreation variables and PA variables.
Abstract: Research on physical activity (PA) has expanded in recent years to examine environmental influences that enhance or limit the opportunities people have to be active. The purpose of this study was to review and critically examine evidence related to parks and recreation as features of the built environment and the relationship of these settings to PA. Fifty studies were retrieved from four major databases that reported an empirical relationship between parks or recreation variables and PA variables. Mixed associations with PA were observed for different types of parks or recreation settings, while proximity to parks or recreation was generally associated with increased PA. Shortcomings exist in this literature and many opportunities for researching parks, recreation, and active living are evident for the future.

676 citations

Journal ArticleDOI
TL;DR: A sulfur electrode exhibiting strong polysulfide chemisorption using a porous N, S dual-doped carbon is reported, and the synergistic functionalization from the N and S heteroatoms dramatically modifies the electron density distribution and leads to much stronger polys sulfuride binding.
Abstract: A sulfur electrode exhibiting strong polysulfide chemisorption using a porous N, S dual-doped carbon is reported. The synergistic functionalization from the N and S heteroatoms dramatically modifies the electron density distribution and leads to much stronger polysulfide binding. X-ray photoelectron spectroscopy studies combined with ab initio calculations reveal strong Li(+) -N and Sn (2-) -S interactions. The sulfur electrodes exhibit an ultralow capacity fading of 0.052% per cycle over 1100 cycles.

676 citations

Journal ArticleDOI
TL;DR: The extensor muscles about the knee played a dominant role in progression from one step to the next in both modes coupled with the ankle plantar flexors, and the total lower limb extensor pattern, called the support moment, was highly correlated between subjects and to level walking.

676 citations


Authors

Showing all 36498 results

NameH-indexPapersCitations
John J.V. McMurray1781389184502
David A. Weitz1781038114182
David Taylor131246993220
Lei Zhang130231286950
Will J. Percival12947387752
Trevor Hastie124412202592
Stephen Mann12066955008
Xuan Zhang119153065398
Mark A. Tarnopolsky11564442501
Qiang Yang112111771540
Wei Zhang112118993641
Hans-Peter Seidel112121351080
Theodore S. Rappaport11249068853
Robert C. Haddon11257752712
David Zhang111102755118
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20241
2023213
2022701
20215,359
20205,388
20195,200