Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07)最新文献_第9页

Context-Derived Pseudonyms for Protection of Privacy in Transport Middleware and Applications 在传输中间件和应用程序中保护隐私的上下文派生的假名

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

David Evans, A. Beresford, T. Burbridge, A. Soppera

引用次数: 7

Data Quality and Query Cost in Wireless Sensor Networks 无线传感器网络中的数据质量和查询代价

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

D. Yates, E. Nahum, J. Kurose, P. Shenoy

{"title":"Data Quality and Query Cost in Wireless Sensor Networks","authors":"D. Yates, E. Nahum, J. Kurose, P. Shenoy","doi":"10.1109/PERCOMW.2007.35","DOIUrl":"https://doi.org/10.1109/PERCOMW.2007.35","url":null,"abstract":"This research is motivated by emerging, real-world wireless sensor network applications for monitoring and control. We examine the benefits and costs of caching data for such applications. We propose and evaluate several approaches to querying for, and then caching data in a sensor field data server. We show that for some application requirements (i.e., when delay drives data quality), policies that emulate cache hits by computing and returning approximate values for sensor data yield a simultaneous quality improvement and cost savings. This win-win is because when system delay is sufficiently important, the benefit to both query cost and data quality achieved by using approximate values outweighs the negative impact on quality due to the approximation. In contrast, when data accuracy drives quality, a linear trade-off between query cost and data quality emerges. We also identify caching and lookup policies for which the sensor field query rate is bounded when servicing an arbitrary workload of user queries. This upper bound is achieved by having multiple user queries share the cost of a sensor field query. Finally, we demonstrate that our results are robust to the manner in which the environment being monitored changes using two different sensor field models","PeriodicalId":352348,"journal":{"name":"Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07)","volume":"48 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":"122667635","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: 13

A State-Based Programming Model and System for Wireless Sensor Networks 一种基于状态的无线传感器网络规划模型与系统

Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOMW.2007.14

Urs Bischoff, Gerd Kortuem

引用次数: 20

A Context Middleware Based on Sensor and RFID Information 基于传感器和RFID信息的上下文中间件

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

T. López, Daeyoung Kim

引用次数: 29

A Testing Methodology for a MANET Routing Protocol Using a Node Self-Similarity Approach 基于节点自相似方法的MANET路由协议测试方法

Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOMW.2007.16

C. Grepet, S. Maag

引用次数: 2

Context-Aware Model in a Ubiquitous Learning Environment 泛在学习环境中的上下文感知模型

Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOMW.2007.30

C. Nino, J. Marques, D. Barbosa, C. Geyer, J. Barbosa, Iara Augustin

引用次数: 20

On Mobile Sink Node for Target Tracking in Wireless Sensor Networks 无线传感器网络中用于目标跟踪的移动汇聚节点

Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOMW.2007.86

Thanh Hai Trinh, H. Youn

引用次数: 10

Primary-Context Model and Ontology: A Combined Approach for Pervasive Transportation Services 主情境模型和本体:普适交通服务的组合方法

Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOMW.2007.95

Deirdre Lee, R. Meier

{"title":"Primary-Context Model and Ontology: A Combined Approach for Pervasive Transportation Services","authors":"Deirdre Lee, R. Meier","doi":"10.1109/PERCOMW.2007.95","DOIUrl":"https://doi.org/10.1109/PERCOMW.2007.95","url":null,"abstract":"Advanced pervasive transportation services aim to improve the safety and efficiency of public and private transportation facilities, while reducing operating costs and improving the travel experience for drivers, passengers and other travellers. In order to achieve these goals, such services require access to context information from a myriad of distributed, heterogeneous intelligent transportation systems. A context management scheme that models information in a standard fashion is essential to support information sharing between individual systems, and higher-level information reasoning. This paper presents an ontology-based spatial context model, which takes a combined approach to modelling context information utilised by pervasive transportation services: the primary-context model facilitates interoperation across independent intelligent transportation systems, whereas the primary-context ontology enables pervasive transportation services to reason about shared context information and to react accordingly. The independently defined, distributed information is correlated based on its primary-context: location, time, identity, and quality of service. The primary-context model and ontology have been evaluated by modelling a car park system for a smart parking space locator service","PeriodicalId":352348,"journal":{"name":"Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07)","volume":"54 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":"128943554","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: 36

Unlinkability and Real World Constraints in RFID Systems 射频识别系统中的不可连接性和现实世界约束

Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOMW.2007.122

Yasunobu Nohara, Sozo Inoue, H. Yasuura

引用次数: 5

Tork: A Variable-Hop Overlay for Heterogeneous Networks Tork:异构网络的可变跳覆盖

Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops (PerComW'07) Pub Date : 2007-03-19 DOI: 10.1109/PERCOMW.2007.117

A. Brown, J. Buford, M. Kolberg

引用次数: 5