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Using prediction to conserve energy in recognition on mobile devices 在移动设备上使用预测节省识别能量
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766907
Dawud Gordon, S. Sigg, Yong Ding, M. Beigl
{"title":"Using prediction to conserve energy in recognition on mobile devices","authors":"Dawud Gordon, S. Sigg, Yong Ding, M. Beigl","doi":"10.1109/PERCOMW.2011.5766907","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766907","url":null,"abstract":"As devices are expected to be aware of their environment, the challenge becomes how to accommodate these abilities with the power constraints which plague modern mobile devices. We present a framework for an embedded approach to context recognition which reduces power consumption. This is accomplished by identifying class-sensor dependencies, and using prediction methods to identify likely future classes, thereby identifying sensors which can be temporarily turned off. Different methods for prediction, as well as integration with several classifiers is analyzed and the methods are evaluated in terms of computational load and loss in quality of context. The results indicate that the amount of energy which can be saved is dependent on two variables (the acceptable loss in quality of recognition, and the number of most likely classes which should be accounted for), and two scenario-dependent properties (predictability of the context sequences and size of the context-sensor dependency sets).","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129270110","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}
引用次数: 10
A self-powered adaptive wireless sensor network for wastewater treatment plants 用于污水处理厂的自供电自适应无线传感器网络
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766905
Yu Chen, C. Twigg, O. Sadik, Shiqiong Tong
{"title":"A self-powered adaptive wireless sensor network for wastewater treatment plants","authors":"Yu Chen, C. Twigg, O. Sadik, Shiqiong Tong","doi":"10.1109/PERCOMW.2011.5766905","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766905","url":null,"abstract":"Efficient monitoring and control of wastewater treatment plants (WWTPs) has become an important public issue as the cost of electricity continues to grow and the quality requirements of processed water tightens. However, the development, deployment, and maintenance of highly efficient monitors and controllers for wastewater processing tanks are significantly challenging. Self-powered, wireless sensor networks (WSNs) are an ideal candidate for this application, since their deployment would have the least impact on the existing infrastructure. A novel wireless sensor network is presented in this paper that integrates microbial fuel cells (MFCs), field-programmable analog arrays (FPAAs), and low-power networking protocols into the sensors to make them self-powered, highly flexible, and adaptive. MFCs convert chemicals in the waste water into electrical energy, while FPAAs provide a means of performing ultra-low-power, real-time, and adaptive processing of the sensor signals. This design achieves sustainable monitoring and control of wastewater treatment with minimal impact to existing infrastructure.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115366098","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}
引用次数: 18
Risk assessment for better Identity Management in pervasive environments 在普及环境中进行更好的身份管理的风险评估
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766913
Patricia Arias Cabarcos
{"title":"Risk assessment for better Identity Management in pervasive environments","authors":"Patricia Arias Cabarcos","doi":"10.1109/PERCOMW.2011.5766913","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766913","url":null,"abstract":"Pervasive computing environments comprise a myriad of devices. In this framework, interactions take place between different parties to simplify users' everyday life in a natural and transparent manner. These interactions, that are generally oriented to the delivery of services, usually involve the exchange of identity information and personal data over the networks. Since transactions may occur between familiar or unfamiliar entities, Identity Management (IdM) becomes indispensable to avoid security problems. Here, we aim to show that risk evaluation must be considered as a key enabler to foster collaboration between parties in a dynamic but yet secure manner. Taking this premise as a foundation, we are designing a methodology to assess risk. We also aim to integrate risk assessment with trust evaluation in order to aid in decision-making procedures, allowing the construction of flexible and dynamic IdM systems that are more suitable to be deployed in pervasive scenarios.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115716143","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}
引用次数: 9
Saving time, money and the environment - vHike a dynamic ride-sharing service for mobile devices 节省时间，金钱和环境- vHike为移动设备提供动态乘车共享服务
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766904
Christoph Stach
{"title":"Saving time, money and the environment - vHike a dynamic ride-sharing service for mobile devices","authors":"Christoph Stach","doi":"10.1109/PERCOMW.2011.5766904","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766904","url":null,"abstract":"In times of increasing traffic-related problems, such as air-pollution or traffic jams, ride-sharing is one of the most environmentally friendly and pleasantest ways to travel. The many benefits are offset by a multitude of prejudices and fears, including security concerns and a heavy scheduling and coordinating burden. For this reason this paper introduces vHike an easy-to-use management system for dynamic ride-sharing running on modern Smartphones. By the use of techniques well-known from Web 2.0 social networks the threats and social discomfort emanated by ride-sharing is mitigated. With vHike we want to show that a proper designed social dynamic ride-sharing system can be feasible and viable.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126924875","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}
引用次数: 18
Towards long-term mobility tracking in NTU hospital's elder care center 南洋理工大学医院老年护理中心的长期活动追踪
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766969
Chun-Chieh Hsiao, Y. Sung, S. Lau, Cheryl C-H Chen, Fei-Hsiu Hsiao, Hao-Hua Chu, Polly Huang
{"title":"Towards long-term mobility tracking in NTU hospital's elder care center","authors":"Chun-Chieh Hsiao, Y. Sung, S. Lau, Cheryl C-H Chen, Fei-Hsiu Hsiao, Hao-Hua Chu, Polly Huang","doi":"10.1109/PERCOMW.2011.5766969","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766969","url":null,"abstract":"Growth of the elder population gives rise to the increasing demand of long-term elder-care facilities. Most elders living in such facilities suffer from multiple chronic illnesses. Accompanying these illnesses are slow declines of the elders' physical and mental health. Continuous tracking of the elders' daily activities is required to detect the declines early. To facilitate long-term mobility tracking of the elders, we investigate, in this work, the potential of a WSN-based indoor location system as a support for the already-overloaded nursing staff. Through the deployment of a WSN-based Real-Time Indoor Location System (WSN-RTLS) in the university hospital's elder care center for 8 months, we find that: (1) each elder's daily mobility shows a reoccurring pattern. The pattern, however, differs from individual to individual. (2) The mobility level shows a significant variability, i.e., not all elders show reoccurring patterns in mobility levels. These suggest that mere quantity of how much the elders move around the facility will not be a suitable target for behavioral modeling. Exact location of the elders' presence, rather, is more relevant. Insitu WSN-RTLSs would be an enabler towards early detection of the elders' physical or mental decline.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125779759","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}
引用次数: 19
Discovering daily routines from Google Latitude with topic models 用主题模型从谷歌纬度发现日常生活
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766928
Laura Ferrari, M. Mamei
{"title":"Discovering daily routines from Google Latitude with topic models","authors":"Laura Ferrari, M. Mamei","doi":"10.1109/PERCOMW.2011.5766928","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766928","url":null,"abstract":"Discovering users' whereabouts patterns is important for many emerging ubiquitous computing applications. Life-log systems, advertisement and smart environments are only some of the applications that can be supported by information regarding user patterns and routine behaviors. Latent Dirichlet Allocation (LDA) is a powerful mechanism to extract recurrent behaviors and high-level patterns (called topics) from mobility data in an unsupervised manner. In this paper we test the effectiveness of LDA in identifying users' routine behaviors from mobility data collected with Google Latitude. Results show that the proposed technique provides good results in discovering patterns and routine behaviors.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124868850","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}
引用次数: 49
Social sensors and pervasive services: Approaches and perspectives 社会传感器和普及服务:方法和观点
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766946
A. Rosi, M. Mamei, F. Zambonelli, S. Dobson, Graeme Stevenson, Juan Ye
{"title":"Social sensors and pervasive services: Approaches and perspectives","authors":"A. Rosi, M. Mamei, F. Zambonelli, S. Dobson, Graeme Stevenson, Juan Ye","doi":"10.1109/PERCOMW.2011.5766946","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766946","url":null,"abstract":"Social networks represent a sophisticated tool for accessing the preferences and properties of individuals and groups. Thus, they potentially allow up-to-date, richly annotated contextual data to be acquired as a side effect of users' everyday use of services. In this paper, we explore how such “social sensing” could be integrated into pervasive systems. We frame and survey the possible approaches to such an integration, and discuss the open issues and challenges facing researchers.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"309 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122745485","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}
引用次数: 102
Sapporo world window Urban interaction through public and private screens 札幌世界之窗通过公共和私人屏幕进行城市互动
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766942
J. Choi, Jan Seeburger
{"title":"Sapporo world window Urban interaction through public and private screens","authors":"J. Choi, Jan Seeburger","doi":"10.1109/PERCOMW.2011.5766942","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766942","url":null,"abstract":"This paper introduces Sapporo World Window, a screen-based application that is currently under development for the new underway passage at the centre of Sapporo City. There are ten large public screens installed in the space, displaying user-generated videos about various aspects of the city and a real-time map that visualises users' interaction with the city. The application aims to engage the general public by functioning as a unique ‘point of connection’ for socio-cultural and technological interactions, making the space a lively social place where people can have meaningful experiences of interacting with people and places of Sapporo through mobile phones (keitai) and the public screens in the space. This paper first outlines the contextual background and key concept for the application's design. Then the paper discusses the user interaction processes, technical specifications, and interface design, followed by the conclusions and outlook.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124970411","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}
引用次数: 12
Privacy preservation schemes for querying wireless sensor networks 无线传感器网络查询的隐私保护方案
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766864
T. Dimitriou, Ahmad Sabouri
{"title":"Privacy preservation schemes for querying wireless sensor networks","authors":"T. Dimitriou, Ahmad Sabouri","doi":"10.1109/PERCOMW.2011.5766864","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766864","url":null,"abstract":"In this work we study the problem of query privacy in large scale sensor networks. Motivated by a novel trust model in which clients query networks owned by trusted entities but operated by potentially untrusted adversaries, we consider several proposals for protecting the identities of the queried sensors.","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131444943","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}
引用次数: 6
Keynote: From context aware smart environments to socially interactive computing 主题演讲:从上下文感知智能环境到社会交互计算
2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops) Pub Date : 2011-03-21 DOI: 10.1109/PERCOMW.2011.5766857
P. Lukowicz
{"title":"Keynote: From context aware smart environments to socially interactive computing","authors":"P. Lukowicz","doi":"10.1109/PERCOMW.2011.5766857","DOIUrl":"https://doi.org/10.1109/PERCOMW.2011.5766857","url":null,"abstract":"The core of current work on context aware systems involves small groups of devices interacting with a single user or a small groups of users in system configurations specifically designed for often narrowly defined applications. On the other hand, smart phones, home automation devices, robots and other intelligent systems are becoming ubiquitous and are increasingly equipped with flexible networking capabilities. Thus, looking at the future of context aware systems we need to consider large collectives of such devices dynamically forming, cooperating, and interacting with large user populations over a broad range of spatial and temporal scales. From the application point of view such systems are attractive for two reasons","PeriodicalId":369430,"journal":{"name":"2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130391164","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}
引用次数: 0
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