Once devices have been distributed around us, it is essential to model the context in which we interact on a daily basis in an appropriate way. In this sense, we should ensure that the devices chosen should be completely suited to needs. Our aim is to create applications to facilitate the user's daily activities, without any extra effort in terms of interaction, if possible. In this work we present an approach to the modeling of contexts through RFID technology, identifying users as implicit inputs to the system and offering services as implicit outputs. The particular contexts studied are the classroom and the conference site
{"title":"Modeling contexts by RFID-sensor fusion","authors":"J. Bravo, R. Hervás, G. Chavira, S. W. Nava","doi":"10.1109/PERCOMW.2006.95","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.95","url":null,"abstract":"Once devices have been distributed around us, it is essential to model the context in which we interact on a daily basis in an appropriate way. In this sense, we should ensure that the devices chosen should be completely suited to needs. Our aim is to create applications to facilitate the user's daily activities, without any extra effort in terms of interaction, if possible. In this work we present an approach to the modeling of contexts through RFID technology, identifying users as implicit inputs to the system and offering services as implicit outputs. The particular contexts studied are the classroom and the conference site","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"271 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115819737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-03-13DOI: 10.1109/PERCOMW.2006.105
Jin Zhu, S. Papavassiliou, S. Kafetzoglou, Jie Yang
In this paper the problem of efficient data aggregation and report delivery in QoS-constrained distributed sensor networks is investigated. An analytical statistical model is introduced, to represent the data aggregation and report delivery process in sensor networks, with specific delivery quality requirements in terms of the achievable end-to-end delay and the successful report delivery probability. Furthermore, a lower bound approximation of the corresponding successful report delivery probability is obtained. The tradeoffs among various design parameters, as well as the impact of these parameters on the successful report delivery probability and its corresponding bound, are also discussed and evaluated
{"title":"On the modeling of data aggregation and report delivery in QoS-constrained sensor networks","authors":"Jin Zhu, S. Papavassiliou, S. Kafetzoglou, Jie Yang","doi":"10.1109/PERCOMW.2006.105","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.105","url":null,"abstract":"In this paper the problem of efficient data aggregation and report delivery in QoS-constrained distributed sensor networks is investigated. An analytical statistical model is introduced, to represent the data aggregation and report delivery process in sensor networks, with specific delivery quality requirements in terms of the achievable end-to-end delay and the successful report delivery probability. Furthermore, a lower bound approximation of the corresponding successful report delivery probability is obtained. The tradeoffs among various design parameters, as well as the impact of these parameters on the successful report delivery probability and its corresponding bound, are also discussed and evaluated","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134222343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-03-13DOI: 10.1109/PERCOMW.2006.127
Yong Liu, Kay Connelly
The proliferation of cell phones has led to an ever increasing number of inappropriate interruptions. SmartContacts provides a solution to this problem by empowering the caller to make better, more informed decisions about the appropriateness of making a call by providing him/her information about the receiver's context. SmartContacts also demonstrates the usefulness and feasibility of a large scale service discovery mechanism for a ubiquitous computing environment. It supports automatic service discovery over the Internet in real time and on demand. It adopts a purely decentralized service organization structure, which provides better scalability and fault tolerance than most of the existing service discovery systems
{"title":"SmartContacts: a large scale social context service discovery system","authors":"Yong Liu, Kay Connelly","doi":"10.1109/PERCOMW.2006.127","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.127","url":null,"abstract":"The proliferation of cell phones has led to an ever increasing number of inappropriate interruptions. SmartContacts provides a solution to this problem by empowering the caller to make better, more informed decisions about the appropriateness of making a call by providing him/her information about the receiver's context. SmartContacts also demonstrates the usefulness and feasibility of a large scale service discovery mechanism for a ubiquitous computing environment. It supports automatic service discovery over the Internet in real time and on demand. It adopts a purely decentralized service organization structure, which provides better scalability and fault tolerance than most of the existing service discovery systems","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133559114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Brunelli, Elisabetta Farella, L. Rocchi, M. Dozza, L. Chiari, L. Benini
In this paper we describe bio-WWS, a bio-feedback system for rehabilitation based on dedicated, wireless, sensor-network architecture. The sensor network is designed to be distributed on the user's body for balance monitoring and correction. The hardware and software architecture (communication protocols, power management policies and application-level control) have been tuned to optimize cost, battery autonomy and real-time performance required for this application. Bio-WWS is an example of complete vertical integration: the sensor network is fully integrated with processing and auditory feedback generation
{"title":"Bio-feedback system for rehabilitation based on a wireless body area network","authors":"D. Brunelli, Elisabetta Farella, L. Rocchi, M. Dozza, L. Chiari, L. Benini","doi":"10.1109/PERCOMW.2006.27","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.27","url":null,"abstract":"In this paper we describe bio-WWS, a bio-feedback system for rehabilitation based on dedicated, wireless, sensor-network architecture. The sensor network is designed to be distributed on the user's body for balance monitoring and correction. The hardware and software architecture (communication protocols, power management policies and application-level control) have been tuned to optimize cost, battery autonomy and real-time performance required for this application. Bio-WWS is an example of complete vertical integration: the sensor network is fully integrated with processing and auditory feedback generation","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132650600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Multi-target tracking is an important embranchment of WSN. This paper works on data fusion of multi-target tracking. We choose LEACH by Wook Choi et al. (2004) as the routing protocol, and FCM algorithm to do association in cluster heads. Based on analysis of former FCM, we found a few problems about it. Such as miss association, missing new targets and repeat tracking of targets. We proposed some improvement to resolve these problems, and was proved to be effective in both theory and simulation of multi-target tracking in WSN
多目标跟踪是无线传感器网络的一个重要分支。本文主要研究多目标跟踪的数据融合问题。我们选择Wook Choi et al.(2004)的LEACH作为路由协议，并使用FCM算法在簇头中进行关联。通过对以往FCM的分析，我们发现了FCM存在的一些问题。如脱靶关联、丢失新目标和重复跟踪目标等。针对这些问题，我们提出了一些改进方法，并在理论和仿真上证明了该方法的有效性
{"title":"A solution of multi-target tracking based on FCM algorithm in WSN","authors":"Lin Fan, Huanzhao Wang, Hai Wang","doi":"10.1109/PERCOMW.2006.15","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.15","url":null,"abstract":"Multi-target tracking is an important embranchment of WSN. This paper works on data fusion of multi-target tracking. We choose LEACH by Wook Choi et al. (2004) as the routing protocol, and FCM algorithm to do association in cluster heads. Based on analysis of former FCM, we found a few problems about it. Such as miss association, missing new targets and repeat tracking of targets. We proposed some improvement to resolve these problems, and was proved to be effective in both theory and simulation of multi-target tracking in WSN","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115613520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-03-13DOI: 10.1109/PERCOMW.2006.118
Yu Wang, Hongyi Wu
The delay/fault-tolerant mobile sensor network (DFT-MSN) has been proposed recently for pervasive information gathering. DFT-MSN distinguishes itself from conventional sensor networks by several unique characteristics such as sensor mobility, loose connectivity, and delay/fault tolerability. The mainstream approaches for sensor networking/communication cannot be applied in DFT-MSN directly. In this paper we propose a replication-based efficient data delivery (RED) scheme based on erasure coding technology tailored for DFT-MSN. RED consists of two key components for data transmission and message management, respectively. The former makes decision on when and where to transmit data messages according to the delivery probability. The latter decides the optimal erasure coding parameters (including the number of data blocks and the needed redundancy) based on its current delivery probability, in order to achieve the desired data delivery ratio while minimizing overhead at the same time. Extensive simulation has been carried out for performance evaluation. Compared with other approaches, the proposed RED data delivery scheme achieves high message delivery ratio with low transmission overhead and data management complexity
{"title":"Replication-based efficient data delivery scheme (red) for delay/fault-tolerant mobile sensor network (DFT-MSN)","authors":"Yu Wang, Hongyi Wu","doi":"10.1109/PERCOMW.2006.118","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.118","url":null,"abstract":"The delay/fault-tolerant mobile sensor network (DFT-MSN) has been proposed recently for pervasive information gathering. DFT-MSN distinguishes itself from conventional sensor networks by several unique characteristics such as sensor mobility, loose connectivity, and delay/fault tolerability. The mainstream approaches for sensor networking/communication cannot be applied in DFT-MSN directly. In this paper we propose a replication-based efficient data delivery (RED) scheme based on erasure coding technology tailored for DFT-MSN. RED consists of two key components for data transmission and message management, respectively. The former makes decision on when and where to transmit data messages according to the delivery probability. The latter decides the optimal erasure coding parameters (including the number of data blocks and the needed redundancy) based on its current delivery probability, in order to achieve the desired data delivery ratio while minimizing overhead at the same time. Extensive simulation has been carried out for performance evaluation. Compared with other approaches, the proposed RED data delivery scheme achieves high message delivery ratio with low transmission overhead and data management complexity","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114844582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper we present a technological approach to support individual and cooperative interactions in collaborative learning environments. We designed and implemented prototype applications that allow to interact with a shared display by means of infrared-enabled mobile phones. The aim is to develop a technique to decouple personal and presentation devices. An experimental evaluation, based on a survey carried out with students from our university, is presented
{"title":"Directional interaction with large displays using mobile phones","authors":"G. Michelis, M. Loregian, Patrick Martini","doi":"10.1109/PERCOMW.2006.43","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.43","url":null,"abstract":"In this paper we present a technological approach to support individual and cooperative interactions in collaborative learning environments. We designed and implemented prototype applications that allow to interact with a shared display by means of infrared-enabled mobile phones. The aim is to develop a technique to decouple personal and presentation devices. An experimental evaluation, based on a survey carried out with students from our university, is presented","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125052939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tiny embedded systems have not been an ideal outfit for high performance computing due to their constrained resources. Limitations in processing power, battery life, communication bandwidth and memory constrain the applicability of existing complex medical/biological analysis algorithms to such platforms. Electrocardiogram (ECG) analysis resembles such algorithm. In this paper, we address the issue of partitioning an ECG analysis algorithm while the wireless communication power consumption is minimized. Considering the orientation of the ECG leads, we devise a technique to perform preprocessing and pattern recognition locally on small embedded systems attached to the leads. The features detected in pattern recognition phase are considered for classification. Ideally, if the features detected for each heart beat reside in a single processing node, the transmission will be unnecessary. Otherwise, to perform classification, the features must be gathered on a local node and thus, the communication is inevitable. We perform such feature grouping by modeling the problem with a hypergraph and applying partitioning schemes. This yields a significant power saving in wireless communication. Furthermore, we utilize dynamic reconfiguration by software module migration. This technique with respect to partitioning enhances the overall power saving in such systems. Moreover, it adaptively alters the system configuration in various environments and on different patients. We evaluate the effectiveness of our proposed techniques on MIT/BIH benchmarks
{"title":"Adaptive medical feature extraction for resource constrained distributed embedded systems","authors":"R. Jafari, H. Noshadi, M. Sarrafzadeh, S. Ghiasi","doi":"10.1109/PERCOMW.2006.17","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.17","url":null,"abstract":"Tiny embedded systems have not been an ideal outfit for high performance computing due to their constrained resources. Limitations in processing power, battery life, communication bandwidth and memory constrain the applicability of existing complex medical/biological analysis algorithms to such platforms. Electrocardiogram (ECG) analysis resembles such algorithm. In this paper, we address the issue of partitioning an ECG analysis algorithm while the wireless communication power consumption is minimized. Considering the orientation of the ECG leads, we devise a technique to perform preprocessing and pattern recognition locally on small embedded systems attached to the leads. The features detected in pattern recognition phase are considered for classification. Ideally, if the features detected for each heart beat reside in a single processing node, the transmission will be unnecessary. Otherwise, to perform classification, the features must be gathered on a local node and thus, the communication is inevitable. We perform such feature grouping by modeling the problem with a hypergraph and applying partitioning schemes. This yields a significant power saving in wireless communication. Furthermore, we utilize dynamic reconfiguration by software module migration. This technique with respect to partitioning enhances the overall power saving in such systems. Moreover, it adaptively alters the system configuration in various environments and on different patients. We evaluate the effectiveness of our proposed techniques on MIT/BIH benchmarks","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129819407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-03-13DOI: 10.1109/PERCOMW.2006.120
M. Loregian, K. Matkovič, Thomas Psik
This paper presents a new interaction technique for browsing large visual information bases in a collaborative environment. The ATELIER project deals with learning environments for architecture and interaction design students. Since students' attitude is to collect large amounts of data, pictures and videos in particular, an important issue is how to keep information organized according to intuitive criteria has been seriously taken into account. This paper shows how we managed to align different approaches for browsing large image sets and describes the interfaces used to seamlessly switch from one view to another. We also implemented search facilities based both on color layout and on keywords taken from an ontology. Integration was achieved by means of physical handles, i.e., barcodes
{"title":"Seamless browsing of visual contents in shared learning environments","authors":"M. Loregian, K. Matkovič, Thomas Psik","doi":"10.1109/PERCOMW.2006.120","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.120","url":null,"abstract":"This paper presents a new interaction technique for browsing large visual information bases in a collaborative environment. The ATELIER project deals with learning environments for architecture and interaction design students. Since students' attitude is to collect large amounts of data, pictures and videos in particular, an important issue is how to keep information organized according to intuitive criteria has been seriously taken into account. This paper shows how we managed to align different approaches for browsing large image sets and describes the interfaces used to seamlessly switch from one view to another. We also implemented search facilities based both on color layout and on keywords taken from an ontology. Integration was achieved by means of physical handles, i.e., barcodes","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125511544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-03-13DOI: 10.1109/PERCOMW.2006.126
G. Thomson, S. Terzis, P. Nixon
Automatically determining the situation of an ad-hoc group of people and devices within a smart environment is a significant challenge in pervasive computing systems. Current approaches often rely on an environment expert to correlate the situations that occur with the available sensor data, while other machine learning based approaches require long training periods before the system can be used. This paper presents a novel approach to situation determination that attempts to overcome these issues by providing a reusable library of general situation specifications that can be easily extended to create new specific situations, and immediately deployed without the need of an environment expert. A proposed architecture of an accompanying situation determination middleware is provided, as well as an analysis of a prototype implementation
{"title":"Situation determination with reusable situation specifications","authors":"G. Thomson, S. Terzis, P. Nixon","doi":"10.1109/PERCOMW.2006.126","DOIUrl":"https://doi.org/10.1109/PERCOMW.2006.126","url":null,"abstract":"Automatically determining the situation of an ad-hoc group of people and devices within a smart environment is a significant challenge in pervasive computing systems. Current approaches often rely on an environment expert to correlate the situations that occur with the available sensor data, while other machine learning based approaches require long training periods before the system can be used. This paper presents a novel approach to situation determination that attempts to overcome these issues by providing a reusable library of general situation specifications that can be easily extended to create new specific situations, and immediately deployed without the need of an environment expert. A proposed architecture of an accompanying situation determination middleware is provided, as well as an analysis of a prototype implementation","PeriodicalId":250624,"journal":{"name":"Fourth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOMW'06)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126735036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：