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Following a Large Unpredictable Group of Targets among Obstacles [chapter]

Christopher Vo, Jyh-Ming Lien
2010 Lecture Notes in Computer Science  
of targets with unknown trajectories, among known obstacles.  ...  Our work focuses on an instance of camera control called target following, and offers an algorithm, based on the ideas of monotonic tracking regions and ghost targets, for following a large coherent group  ...  Unfortunately, many of these methods are not applicable to follow a large group of targets in real-time among obstacles.  ... 
doi:10.1007/978-3-642-16958-8_14 fatcat:dccmxrtg7veibdmdj53gnutqxa

Age-related changes in gait adaptability in response to unpredictable obstacles and stepping targets

Maria Joana D. Caetano, Stephen R. Lord, Daniel Schoene, Paulo H.S. Pelicioni, Daina L. Sturnieks, Jasmine C. Menant
2016 Gait & Posture  
A B S T R A C T Background: A large proportion of falls in older people occur when walking.  ...  They then completed the following randomly presented gait adaptability trials: obstacle avoidance, short stepping target, long stepping target and no target/obstacle (3 trials of each).  ...  Estado de São Paulo as a M.Sc. scholarship (FAPESP -2013/18064-5).  ... 
doi:10.1016/j.gaitpost.2016.02.003 pmid:27131174 fatcat:nnfe6gbzqrbpldkbmzgmw7ysru

Research on Reverse Genetic Algorithms Based on Adaptive Tuning of Mutation Probability

Liu Depeng
2006 2006 1ST IEEE Conference on Industrial Electronics and Applications  
Combined with the advantages of the two algorithms, the UAV can quickly reach the target point while avoiding obstacles.  ...  Based on the security problems in UAV flight, this paper proposes an A*BC algorithm for its route planning. The artificial bee colony algorithm is used to improve the A* algorithm.  ...  ACKNOWLEDGMENTS The authors gratefully acknowledge the support from the National Natural Science Foundation of China (Grant Numbers: 51663001, 61741202 and 61741103).  ... 
doi:10.1109/iciea.2006.257323 fatcat:rw4sxrxoo5c4tin37giaamtz5q

Perceptions of resident physicians about management of inpatient hyperglycemia in an urban hospital

Vasundhara Cheekati, Robert C. Osburne, Kimberly A. Jameson, Curtiss B. Cook
2009 Journal of Hospital Medicine  
DESIGN: A previously developed questionnaire was modified and administered.  ...  Residents were asked about the importance of inpatient glucose control, desirable glucose ranges, and problems encountered when managing hyperglycemia.  ...  ''Unpredictable timing of patient procedures'' and ''unpredictable changes in patient diet and mealtimes'' were among the 5 most frequently cited concerns.  ... 
doi:10.1002/jhm.383 pmid:19140201 fatcat:pq666q4l2zhuxocsijoe4qtmha

The Entrapment/Escorting Mission

Gianluca Antonelli, Filippo Arrichiello, Stefano Chiaverini
2008 IEEE robotics & automation magazine  
In [17], a set of fuzzy rules are proposed to surround and entrap an escaping target, and these rules are experimentally validated on a three-robot system.  ...  In [23] , an approach is presented to track and acquire a target and is experimentally validated by the use of two mobile robots.  ...  with the target 2) move the robots on a given circumference around the centroid 3) properly distribute the robots along the circumference 4) avoid collisions among the robots themselves and with obstacles  ... 
doi:10.1109/m-ra.2007.914932 fatcat:hmaz2fsb2zd6tkbw2yvo2ymmmq

Auction-Based Consensus of Autonomous Vehicles for Multi-Target Dynamic Task Allocation and Path Planning in an Unknown Obstacle Environment

Wan-Yu Yu, Xiao-Qiang Huang, Hung-Yi Luo, Von-Wun Soo, Yung-Lung Lee
2021 Applied Sciences  
unexpected obstacles and staying close as a group as possible simultaneously.  ...  We modify the consensus-based auction algorithm (CBAA) so that it can dynamically reallocate tasks among autonomous vehicles that can flexibly find a path to reach multiple dynamic targets while avoiding  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app11115057 fatcat:mny7bc2jizabtd4zxk75y36hni

Association of executive function and performance of dual-task physical tests among older adults: analyses from the InChianti study

Antonia K. Coppin, Anne Shumway-Cook, Jane S. Saczynski, Kushang V. Patel, Alessandro Ble, Luigi Ferrucci, Jack M. Guralnik
2006 Age and Ageing  
Methods-gait speed (m/s) was measured during the performance of complex walking tasks (walking/talking, walking/picking-up an object, walking/carrying a large package, walking over obstacles, walking with  ...  Overall, the results showed that the cost associated with the addition of a challenge to the basic walking task differs by executive function and the nature of the task.  ...  Acknowledgements Sources of funding The InChianti study was supported as a 'targeted project' (ICS 110.1\RS97.71) by the Italian Ministry of Health and in part by the Intramural Research Program of the  ... 
doi:10.1093/ageing/afl107 pmid:17047008 pmcid:PMC2645642 fatcat:6yyyqxsqkfebda2tuagxmmmbxu

Research on CGF Formation Maintenance and Obstacle Avoidance

Siqing Wang, Yongjun Qiao, Yansong Wang
2018 MATEC Web of Conferences  
In this paper, the motion of CGF formation is decomposed into moving to target, maintaining formation, avoiding obstacles, restoring formation, reaching target, and a linear feedback mechanism based on  ...  the relative position of leader and follower is introduced to prevent the occurrence of the team.  ...  the obstacle is large or dense, the formation switching behaviour is triggered. 3 Formation and maintenance based on Leader-Follower Agent dynamics representation This paper establishes a quadratic  ... 
doi:10.1051/matecconf/201823204032 fatcat:7ol6ctghdfhy7fj6cld46uuvfa

Reinforcement learning-based group navigation approach for multiple autonomous robotic systems

O. Azouaoui, A. Cherifi, R. Bensalem, A. Farah, K. Achour
2006 Advanced Robotics  
Then, simulation results display the ability of the suggested approach to provide ARS with capability to navigate in a group formation in dynamic environments.  ...  In several complex applications, the use of multiple autonomous robotic systems (ARS) becomes necessary to achieve different tasks, such as foraging and transport of heavy and large objects, with less  ...  Simulation of the leader-followers formation The obtained geometric formation of the ARS group moves towards a prescribed target while avoiding obstacles, navigating in a formation (Figs 8 and 9 ).  ... 
doi:10.1163/156855306776985531 fatcat:qpz4za6hu5hwhpjrdgbq7amx4a

Reactive, distributed layered architecture for resource-bounded multi-robot cooperation: application to mobile sensor network coverage

Kian Hsiang Low, Wee Kheng Leow, M.H. Ang
2004 IEEE International Conference on Robotics and Automation, 2004. Proceedings. ICRA '04. 2004  
It uses the concepts of ant behavior to self-regulate the regional distributions of robots in proportion to that of the targets to be tracked in the changing environment.  ...  In the lower layer, the robots use self-organizing neural networks to coordinate their target tracking within a region.  ...  They are only required to discriminate between targets, obstacles and robot kins. Cooperative EKMs can be used by the robots to perform tracking in a region with simple, unpredictable obstacles.  ... 
doi:10.1109/robot.2004.1308851 dblp:conf/icra/LowLA04 fatcat:zeqppfpcbba33ixnoz6x6yl5mm

Human-friendly robot navigation in dynamic environments

Jerome Guzzi, Alessandro Giusti, Luca M. Gambardella, Guy Theraulaz, Gianni A. Di Caro
2013 2013 IEEE International Conference on Robotics and Automation  
The vision-based mechanisms that pedestrians in social groups use to navigate in dynamic environments, avoiding obstacles and each others, have been subject to a large amount of research in social anthropology  ...  Through extensive quantitative simulations we explore various parameters of the system and demonstrate its good properties in scenarios of different complexity.  ...  Then, after a random time interval, it becomes ochlophobic (i.e., exhibits a fear of crowds) and spends a random amount of time moving towards a random, obstacle-free direction (regardless of its target  ... 
doi:10.1109/icra.2013.6630610 dblp:conf/icra/GuzziGGTC13 fatcat:g2nrwymybfatbioax64dwxseru

Insulin therapy for inpatients with diabetes: Perceptions of resident physicians from disparate geographic training programs

Vasundhara Cheekati, Robert C. Osburne, Kimberly A. Jameson, Curtiss B. Cook
2009 Insulin  
Most residents indicated that they would target a therapeutic glucose range within published recommendations.  ...  Thus, a better understanding of residents' beliefs about diabetes in the hospital must be obtained. objective: The purpose of this article was to compare and contrast perceptions of resident physicians  ...  In pooled data, the "risk of causing hypoglycemia" ranked second, followed by "unpredictable changes in patient diet and mealtimes," "unpredictable timing of patient procedures," and "knowing how to adjust  ... 
doi:10.1016/s1557-0843(09)80019-5 fatcat:waem7o5ppbccpcerlohwlg2avm

Hand path priming in manual obstacle avoidance: Evidence that the dorsal stream does not only control visually guided actions in real time

Steven A. Jax, David A. Rosenbaum
2007 Journal of Experimental Psychology: Human Perception and Performance  
The times to initiate movements also reflected the use of a sophisticated visual search strategy that took obstacle likelihood into account.  ...  The 3 experiments reported here were designed to determine whether priming exists for visually guiding the hand to targets with obstacles sometimes in the way.  ...  Again, no differences were observed among the two groups of Experiment 2 and the participants of Experiment 1.  ... 
doi:10.1037/0096-1523.33.2.425 pmid:17469977 fatcat:75g6b3ccivd5rlctfwhshxreka

A physically-based particle model of emergent crowd behaviors [article]

Laure Heïgeas, Annie Luciani, Nicolas Castagné
2010 arXiv   pre-print
Our model of the scene is regulated as a large, dynamically coupled network of second order differential automata.  ...  This place was a social theater in which two kinds of collective phenomena took place: interpersonal interactions (small group discussion and negotiation, etc.) and global collective phenomena, such as  ...  If a large number of individuals are placed inside a partially confined environment, collective structures, such as groups or flows, appear spontaneously.  ... 
arXiv:1005.4405v1 fatcat:ad4a3uxgdvhs7muidly7hcsflm

A hybrid approach based on multi-agent geosimulation and reinforcement learning to solve a UAV patrolling problem

Jimmy Perron, Jimmy Hogan, Bernard Moulin, Jean Berger, Micheline Belanger
2008 2008 Winter Simulation Conference  
In this paper we address a dynamic distributed patrolling problem where a team of autonomous unmanned aerial vehicles (UAVs) patrolling moving targets over a large area must coordinate.  ...  We propose a hybrid approach combining multi-agent geosimulation and reinforcement learning enabling a group of agents to find near optimal solutions in realistic geo-referenced virtual environments.  ...  movements in order to patrol a large area in which targets may change locations and obstacles must be avoided.  ... 
doi:10.1109/wsc.2008.4736198 dblp:conf/wsc/PerronHMBB08 fatcat:zmpopjkh7fautflh53mpwuoi4m
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