Results 211 to 220 of about 19,307 (253)
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Opportunistic coverage for urban vehicular sensing
Computer Communications, 2015Opportunistic vehicular sensing is a new paradigm which exploits variety of sensors embedded in vehicles or smartphones to collect data ubiquitously for large-scale urban sensing. Existing work lacks in-depth investigations on the coverage problem in such sensing systems: (1) how to define and measure the coverage?
Dong Zhao, Huadong Ma, Xiang-Yang Li
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Opportunistic and Context-Aware Affect Sensing on Smartphones [PDF]
IEEE Pervasive Computing, 2016 Opportunistic affect sensing offers unprecedented potential for capturing spontaneous affect, eliminating biases inherent in the controlled setting. Facial expression and voice are two major affective displays, but most affect sensing systems on smartphones avoid them due to extensive power requirements.
Rajib Rana, Margee Hume, John Reilly
exaly +5 more sources
On Opportunistic Coverage for Urban Sensing
2013 IEEE 10th International Conference on Mobile Ad-Hoc and Sensor Systems, 2013Opportunistic sensing is a new paradigm which exploits human-carried or vehicle-mounted sensors to collect data ubiquitously for large-scale urban sensing. Existing work lacks an in-depth investigation on the sensing quality of such sensing systems, which faces two basic problems: 1) how to measure the sensing quality?
Dong Zhao 0001 +3 more
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Opportunistic sensing in hydrometeorology
2020<p>Traditionally, hydrologists have relied on dedicated measurement equipment to do their business (e.g. rainfall-runoff modeling). Such instruments are typically owned and operated by government agencies and regional or local authorities.
Remko Uijlenhoet +3 more
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Collaborative opportunistic sensing with mobile phones
Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct Publication, 2014Mobile phones include a variety of sensors that can be used to develop context-aware applications and gather data about the user's behavior, including the places he visits, his level of activity and how frequently and with whom he socializes. The collection and analysis of these data has been the focus of recent attention in ubiquitous computing ...
Luís A. Castro 0001 +7 more
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Sensing-based opportunistic channel access
Mobile Networks and Applications, 2006Enabled by regulatory initiatives and advanced radio technologies, more flexible opportunistic spectrum access has great potential to alleviate the spectrum scarcity. In this paper, we study the channel selection issue of secondary users in spectrum-agile communication systems.
Xin Liu 0002, Sai Shankar N.
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Energy-Efficient Opportunistic Collaborative Sensing
2013 IEEE 10th International Conference on Mobile Ad-Hoc and Sensor Systems, 2013This paper studies mobile sensing in a complete distributed and opportunistic scheme. We present a novel sensing strategy for sensing nodes without movement constraints. This strategy offers information sharing and sensor scheduling that maximizes the benefits from collaboration between the nodes.
Julien Eberle, Zhixian Yan, Karl Aberer
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An Adaptive Middleware for Opportunistic Mobile Sensing
2015 International Conference on Distributed Computing in Sensor Systems, 2015The current ubiquity of smart phones with mobile Internet and several short-range wireless interfaces (NFC, Bluetooth, Bluetooth Smart) and the fact that these devices are carried almost anytime and anywhere by users, enables potentially new pervasive sensing applications where smartphones can act as universal hubs for interaction with sensors (or ...
Rafael Oliveira Vasconcelos +6 more
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Opportunistic PM2.5 Sensing: A Feasibility Study
GLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017In this paper, we present an energy, data and cost efficient model for mobile opportunistic PM2.5 sensing via bicycles. To facilitate the implementation of such systems, we first investigate the accuracy issue of different Inertial Monitoring Unit (IMU) built into the Arduino 101 for stop detection.
Sachit Mahajan +4 more
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Opportunistic Sensing and Learning in Sensor Networks
2007 International Workshop on Content-Based Multimedia Indexing, 2007In this paper we will argue that sensor networks in which multimodal sensors are connected to each other and computational devices capable of data mining, offer the possibility of serendipitous and opportunistic sensing in which unanticipated associations are detected and used to produce more robust event recognition.
R. Tavenard (Romain) +3 more
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