Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07)最新文献_第2页

Physically Unclonable Function-Based Security and Privacy in RFID Systems 基于物理不可克隆功能的RFID系统安全性和隐私性

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.26

L. Bolotnyy, G. Robins

引用次数: 211

An RF-Based System for Tracking Transceiver-Free Objects 一种基于射频的无收发器目标跟踪系统

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.8

Dian Zhang, Jian Ma, Quanbin Chen, L. Ni

引用次数: 265

The SkyLoc Floor Localization System SkyLoc楼层定位系统

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.37

Alex Varshavsky, A. LaMarca, Jeffrey Hightower, E. D. Lara

引用次数: 108

SHAD: A Human-Centered Security Architecture for the Plan B Operating System 以人为本的B计划操作系统安全架构

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.31

Enrique Soriano, Francisco J. Ballesteros, Gorka Guardiola

{"title":"SHAD: A Human-Centered Security Architecture for the Plan B Operating System","authors":"Enrique Soriano, Francisco J. Ballesteros, Gorka Guardiola","doi":"10.1109/PERCOM.2007.31","DOIUrl":"https://doi.org/10.1109/PERCOM.2007.31","url":null,"abstract":"This paper describes SHAD, a novel architecture for security in pervasive computing environments, and a prototype implementation. SHAD is a peer-to-peer and human-centered security architecture. It is based in a general purpose personal device that manages the user's security: the UbiTerm. There are several other systems that, at first sight, seem to provide single sign-on in ubiquitous environments. We argue that they fail to do so in practice, and that SHAD offers for the first time a real SSO that works well in ubiquitous environments that require using multiple machines and services simultaneously. SHAD permits users to share their resources in an easy, natural, and intuitive way, even while being disconnected from the rest of the world. The architecture we propose is able to exploit context information, when it is available. It does not require hard administration tasks, and permits users to manage their own resources. We have been using SHAD for one year. This paper describes our prototype implementation, the experience using it, and some measures that confirm that our approach is reasonable in practice","PeriodicalId":314022,"journal":{"name":"Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07)","volume":"104 5-6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114009151","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: 7

Supporting Mobile Service Usage through Physical Mobile Interaction 通过移动物理交互支持移动业务使用

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.35

G. Broll, Sven Siorpaes, E. Rukzio, M. Paolucci, J. Hamard, M. Wagner, A. Schmidt

引用次数: 104

Designing Ubiquitous Computing Systems for Sports Equipment 运动器材普适计算系统设计

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.12

M. Kranz, W. Spießl, A. Schmidt

引用次数: 21

Achieving Flexible Cache Consistency for Pervasive Internet Access 为普及互联网接入实现灵活的缓存一致性

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.6

Yu Huang, Jiannong Cao, Zhijun Wang, Beihong Jin, Yulin Feng

{"title":"Achieving Flexible Cache Consistency for Pervasive Internet Access","authors":"Yu Huang, Jiannong Cao, Zhijun Wang, Beihong Jin, Yulin Feng","doi":"10.1109/PERCOM.2007.6","DOIUrl":"https://doi.org/10.1109/PERCOM.2007.6","url":null,"abstract":"Caching is an important technique to support pervasive Internet access. Cache consistency measures the deviation between the cached data and the source data. In mobile computing environments, especially with ad hoc networks, users are in great need of the flexibility in tuning their consistency requirements, in order to make tradeoffs between the specified cache consistency and the cost incurred. Existing works have used delta consistency (DC) and probabilistic consistency (PC) which, to some extent, provide the users with such flexibility. In this paper, we propose a general consistency model called probabilistic delta consistency (PDC). PDC covers all existing consistency models including DC and PC, and integrates the flexibility granted by both DC and PC. Thus, PDC enables the users to flexibly specify their consistency requirements in two orthogonal dimensions, namely the deviation in time/value and the ratio of queries gaining the specified consistency. We also propose a consistency maintenance algorithm, called flexible combination of push and pull (FCPP), which can meet users' consistency requirements specified under the PDC model. An analytical model is derived to achieve the optimized combination of push and pull, so as to ensure the user-specified consistency requirements, while minimizing the consistency maintenance overhead. Extensive simulations are conducted to evaluate the performance of the FCPP algorithm. Evaluation results show that, compared with the widely used dynamic TTR algorithm, FCPP can save up to 68% of the traffic overhead and reduce the query delay by up to 84%","PeriodicalId":314022,"journal":{"name":"Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124354728","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

A Simple Model and Infrastructure for Context-Aware Browsing of the World 上下文感知浏览世界的简单模型和基础结构

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.4

G. Castelli, A. Rosi, M. Mamei, F. Zambonelli

引用次数: 81

Automatic Generation of Device User-Interfaces? 自动生成设备用户界面?

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.10

O. Omojokun, P. Dewan

{"title":"Automatic Generation of Device User-Interfaces?","authors":"O. Omojokun, P. Dewan","doi":"10.1109/PERCOM.2007.10","DOIUrl":"https://doi.org/10.1109/PERCOM.2007.10","url":null,"abstract":"One of the visions of pervasive computing is using mobile computers to interact with networked devices. A question raised by this vision is: should the user-interfaces of these devices be handcrafted manually or generated automatically? Based on experience within the domain of desktop computing, the answer seems to be that automatic generation is not flexible enough to support a significant number of useful interfaces but requires substantially less coding effort for the interfaces it can create. We show that the answer is much more complicated when we consider networking of traditional appliances such as stereos and TVs. Using qualitative arguments and quantitative experimental data, we show that the manual vs. generated issue must be resolved based on: (a) not only user-interface programming and flexibility but also several other metrics such as space and time costs, binding time, and reliability (b) whether it is a graphical or speech based user-interface, (c) the size of the device user-interface, (d) whether the manually written user-interface code is available at the mobile computer or at a remote machine, and (e) the network bandwidth between the mobile computer and remote factory","PeriodicalId":314022,"journal":{"name":"Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121446495","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

Structural Learning of Activities from Sparse Datasets 稀疏数据集中活动的结构学习

Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOM.2007.33

F. Albinali, N. Davies, A. Friday

{"title":"Structural Learning of Activities from Sparse Datasets","authors":"F. Albinali, N. Davies, A. Friday","doi":"10.1109/PERCOM.2007.33","DOIUrl":"https://doi.org/10.1109/PERCOM.2007.33","url":null,"abstract":"A major challenge in pervasive computing is to develop systems that can reliably recognize human activity patterns, such as bathing from sensor data. Typical sensor deployments generate sparse datasets with thousands of sensor readings and few instances of activities. The imbalance between the number of features (i.e. sensors firing) and the classification targets (i.e. activities) complicates the learning process. In this paper, we propose a novel framework for discovering relationships between sensor signals and observed human activities from sparse datasets. The framework builds on the use of Bayesian networks for modeling activities by representing statistical dependencies between sensors. This allows us to solve two key problems: firstly, how to automatically determine an effective structure for a Bayesian network that recognizes a particular activity without human intervention; and, secondly, we address the pragmatic problem of sparse training data, where the data available to train the activity recognizers is limited. In our approach, we `learn' the structure of the Bayesian networks automatically from the sensor data. We optimize this process in 3 ways: firstly, we perform multicollinearity analysis to focus on orthogonal sensor data with minimal redundancy. Secondly, we propose Efron's bootstrapping to generate large training sets that capture important features of an activity. Finally, we find the best Bayesian network that explains our data using a heuristic search that is unbiased to the ordering between consecutive variables. We evaluate our approach using a data set gathered from MIT's PlaceLab. The inferred networks correctly identify activities for 85% of the time","PeriodicalId":314022,"journal":{"name":"Fifth Annual IEEE International Conference on Pervasive Computing and Communications (PerCom'07)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131502428","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: 27