3,840 Hits in 4.9 sec

A Novel Redundant Data Storage Algorithm Based on Minimum Spanning Tree and Quasi-randomized Matrix

2018 KSII Transactions on Internet and Information Systems  
In the process of data collection and recovery, we need to speed up as much as possible so that all the sensory data can be restored by accessing as few survivors as possible.  ...  The simulation results show that QRNCDS has lower energy consumption, higher data collection efficiency, higher decoding efficiency, smaller data storage redundancy and larger network fault tolerance.  ...  For the purpose of realizing efficient storage and fast collection of sensory data, an energy-efficient redundant data storage algorithm QRNCDS based on MST (Minimum Spanning Tree) and quasi-randomized  ... 
doi:10.3837/tiis.2018.01.011 fatcat:wylz4esdzveo5ggrdo5ggo3aaa

Adaptive redundancy for data propagation exploiting dynamic sensory mobility

Athanasios Kinalis, Sotiris Nikoletseas
2008 Proceedings of the 11th international symposium on Modeling, analysis and simulation of wireless and mobile systems - MSWiM '08  
replacement of flooding, e.g., the sensors tend to dynamically propagate less data in the presence of high mobility, while nodes of high mobility are favored for moving data around.  ...  These dissemination schemes are enhanced by a distance-sensitive probabilistic message flooding inhibition mechanism that further reduces communication cost, especially for fast nodes of high mobility  ...  (b) While sensory mobility introduces major complications, we in fact exploit it as a replacement for connectivity and data propagation redundancy: we propose adaptive protocols, that propagate less data  ... 
doi:10.1145/1454503.1454532 dblp:conf/mswim/KinalisN08 fatcat:qktyargs2jdxpj56mbx2634lbi

DAWN: A density adaptive routing algorithm for vehicular delay tolerant sensor networks

Qiao Fu, Lin Zhang, Wei Feng, Yixin Zheng
2011 2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton)  
Through simulations over the random walk on the Manhattan Grids and the real GPS traces of about 5000 taxi cabs for 30 days in the Beijing city, DAWN is proved to outperform other classical routing schemes  ...  Based on the framework, we propose a routing algorithm for VDTSN, namely DAWN (Density Adaptive routing With Node awareness).  ...  Recently, with the fast development of the vehicle-to-vehicle communication technologies, the Vehicular Sensor Networks (VSN) that use moving vehicles to collect and forward sensory data in the urban area  ... 
doi:10.1109/allerton.2011.6120311 dblp:conf/allerton/FuZFZ11 fatcat:dbssiy5n75e75m4bkxi3y3byse

Efficient collection of sensor data via a new accelerated random walk

C. M. Angelopoulos, S. Nikoletseas, D. Patroumpa, C. Raptopoulos
2013 Concurrency and Computation  
Random walks in wireless sensor networks can serve as fully local, lightweight strategies for sink motion that significantly reduce energy dissipation but introduce higher latency in the data collection  ...  Motivated by the problem of efficiently collecting data from wireless sensor networks via a mobile sink, we present an accelerated random walk on Random Geometric Graphs.  ...  The collected sensory data is usually disseminated to a static control center (called data sink) in the network, using node to node multi-hop data propagation.  ... 
doi:10.1002/cpe.3108 fatcat:phqsww6wrbgb3aszjfjo5hooay

Direction-based adaptive data propagation for heterogeneous sensor mobility

Azzedine Boukerche, Dionysios Efstathiou, Sotiris Nikoletseas
2012 Journal of Parallel and Distributed Computing  
Also, adaptive scheduling algorithms for the motion of mobile sinks to visit nodes according to the data traffic they produce have been suggested in [18] .  ...  Different data collection and movement strategies have been proposed, as well as routing methods based on the sink stopping at certain positions to collect data [10] .  ...  We wish to warmly thank the anonymous reviewers for insightful comments.  ... 
doi:10.1016/j.jpdc.2012.02.010 fatcat:yd6cm3wezjeuzcbcffo5j6dtg4

A Comprehensive Study of Data Collection Schemes Using Mobile Sinks in Wireless Sensor Networks

Abdul Khan, Abdul Abdullah, Mohammad Anisi, Javed Bangash
2014 Sensors  
efficient data collection.  ...  Sink mobility has also been exploited to address coverage issues and interested readers may refer to [8] [9] [10] [11] for more details.  ...  Furthermore, to provide fair coverage to different areas of the network, biased-random-walk mobility is thereby adapted at the end of every stop period, less frequently visited regions are favored for  ... 
doi:10.3390/s140202510 pmid:24504107 pmcid:PMC3958281 fatcat:ehnoh5hclncvrgwwm5ibzkhkam

Optimizing event coverage in theme parks

Gürkan Solmaz, Damla Turgut
2014 Wireless networks  
We propose a model which deploys a wireless network with mobile sinks to facilitate event coverage.  ...  For the event handling decision problem, we propose an approach which represents movement opportunities in the park as a graph with dynamically changing weights, and searches for the shortest path in this  ...  [47] compare three coverage-adaptive random walks for fast sensory data collection.  ... 
doi:10.1007/s11276-014-0688-z fatcat:mqfzvmmynnfsbpfjgcrut56jaq

Prefrontal, posterior parietal and sensorimotor network activity underlying speed control during walking

Thomas C. Bulea, Jonghyun Kim, Diane L. Damiano, Christopher J. Stanley, Hyung-Soon Park
2015 Frontiers in Human Neuroscience  
Sustained µ and β band desynchronization within sensorimotor cortex, a neural correlate for movement, was observed during walking thereby validating our methods for isolating cortical activity.  ...  Here, noninvasive electroencephalography (EEG) recorded from able-bodied volunteers during a novel treadmill walking paradigm was used to assess neural correlates of walking.  ...  Prior to data collection each participant practiced walking with the passive and active modes for 5 min.  ... 
doi:10.3389/fnhum.2015.00247 pmid:26029077 pmcid:PMC4429238 fatcat:tlx6vajv4zbtvbrphbjmee2blq

L-ALLIANCE: Task-oriented multi-robot learning in behavior-based systems

Lynne E. Parker
1996 Advanced Robotics  
A large application domain for multi-robot teams involves task-oriented missions, in which potentially heterogeneous robots must solve several distinct tasks.  ...  Previous research addressing this problem in multirobot systems has largely focused on issues of eciency, while ignoring the real-world situated robot needs of fault tolerance and adaptivity.  ...  We collected performance data by varying the number of robots on the team (n) from 2 to 20, the number of tasks the team must perform (m) from 1 to 40, the task coverage 1 from 1 to 10, the degree of heterogeneity  ... 
doi:10.1163/156855397x00344 fatcat:ynwvdhmdtjb5nfw37cs4dhftfy

Synchronized Intracranial Electrical Activity and Gait Recording in Parkinson's Disease Patients With Freezing of Gait

De-Feng Liu, Bao-Tian Zhao, Guan-Yu Zhu, Yu-Ye Liu, Yu-Tong Bai, Huan-Guang Liu, Huan-Guang Liu, Huan-Guang Liu, Yin Jiang, Yin Jiang, Xin Zhang, Lin-Shi (+10 others)
2022 Frontiers in Neuroscience  
For electrophysiological data, we first manually reviewed the scaled (five levels) quality during waking.  ...  Synchronized electrophysiological and gait data were collected using the Nihon Kohden EEG amplifier and Codamotion system when subjects performed the Timed Up and Go (TUG) test.  ...  The coverage of the subdural electrode includes the premotor, primary motor and sensory cortex.  ... 
doi:10.3389/fnins.2022.795417 pmid:35310098 pmcid:PMC8927080 doaj:2333020becd34855b596da648239e44e fatcat:ghzdrgs6g5ff3aad6z77oftezi

Activity Recognition with Evolving Data Streams

Zahraa S. Abdallah, Mohamed Medhat Gaber, Bala Srinivasan, Shonali Krishnaswamy
2018 ACM Computing Surveys  
Activity recognition aims to provide accurate and opportune information on people's activities by leveraging sensory data available in today's sensory rich environments.  ...  The perspective of this paper is to review the adaptation capabilities of activity recognition techniques in streaming environment.  ...  Some people tend to have pauses of standing while walking; others may walk as fast as jogging.  ... 
doi:10.1145/3158645 fatcat:xsgcvmjy7rbifpfkmrclbhdwsa

Foot Drop Stimulation Versus Ankle Foot Orthosis After Stroke: 30-Week Outcomes

P. M. Kluding, K. Dunning, M. W. O'Dell, S. S. Wu, J. Ginosian, J. Feld, K. McBride
2013 Stroke  
) and fast gait speed.  ...  The Functional Ambulation: Standard Treatment versus Electric Stimulation Therapy (FASTEST) trial was a multicenter, randomized, single-blinded trial comparing FDS and AFO for drop foot among people ≥3  ...  Data Management and Quality A secure Web-based electronic data capture system (Medidata Rave) was used for clinical data collection and management.  ... 
doi:10.1161/strokeaha.111.000334 pmid:23640829 fatcat:qkxjykaf6jaahgpa4qoqsxsda4

Adaptive Continuous Authentication System for Smartphones using Hyper Negative Selection and Random Forest Algorithms

Maryam M. Alharbi, Rashiq Rafiq Marie
2021 International Journal of Advanced Computer Science and Applications  
a more accurate and adaptive learning model.  ...  As smartphones have become a part of our daily lives, including payment and banking transactions; therefore, increasing current data and privacy protection models is essential.  ...  A user profile builds from the previously collected data.  ... 
doi:10.14569/ijacsa.2021.0120859 fatcat:yun76kvwcnewzlrkxm2nv6rqu4

A methodology for obtaining objective measurements of population obesogenic behaviors in relation to the environment

Christos Diou, Ioannis Sarafis, Vasileios Papapanagiotou, Ioannis Ioakimidis, Anastasios Delopoulos
2019 Statistical Journal of the IAOS  
the participating individuals; and (e) quantify the quality of the collected big data.  ...  matrix of a population's obesogenic behavioral elements using commonly available wearable sensors (accelerometers, gyroscopes, GPS), embedded in smart phones and smart watches; (b) acquire information for  ...  The sensory data collected via the smartphones are inertial measurement unit data (IMU), location data and photographs. Other types of sensors are available which, however, are currently not used.  ... 
doi:10.3233/sji-190537 fatcat:i4aaic25wzhdhcs3vl2xpeqoce

Predictive whisker kinematics reveal context-dependent sensorimotor strategies

Avner Wallach, David Deutsch, Tess Baker Oram, Ehud Ahissar, Rony Azouz
2020 PLoS Biology  
In sum, this work shows that rats adapt their active exploratory behavior in a "homeostatic" attempt to preserve sensorimotor coverage under changing environmental conditions and changing sensory capacities  ...  Animals actively move their sensory organs in order to acquire sensory information.  ...  Acknowledgments We thank Sahar Froim for experimental assistance and Mitra Hartmann and Mathew Diamond for discussions and advices.  ... 
doi:10.1371/journal.pbio.3000571 pmid:32453721 fatcat:baoj6xamp5hpdhwodw76fwg344
« Previous Showing results 1 — 15 out of 3,840 results