2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous最新文献_第5页

On real-time capacity of event-driven data-gathering sensor networks 事件驱动数据采集传感器网络的实时能力研究

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.6813

Bo Jiang, B. Ravindran, Hyeonjoong Cho

{"title":"On real-time capacity of event-driven data-gathering sensor networks","authors":"Bo Jiang, B. Ravindran, Hyeonjoong Cho","doi":"10.4108/ICST.MOBIQUITOUS2009.6813","DOIUrl":"https://doi.org/10.4108/ICST.MOBIQUITOUS2009.6813","url":null,"abstract":"Network capacity is a critical feature of wireless ad hoc and sensor networks. It is particularly challenging to determine network capacity when combined with other performance objectives such as timeliness. This paper investigates real-time capacity for event-driven data-gathering sensor networks with the unbalanced many-to-one traffic pattern. First, we compute the average allowable throughputs of nodes for a given event distribution, based on which we then leverage results of queuing theory to estimate the per-hop delays. We develop a new slack time distribution scheme for the unbalanced many-to-one traffic pattern, and prove it optimal in terms of the per-hop success probability. Here the per-hop success probability is defined as the probability for a packet to meet its sub-deadlines at each hop. Finally, we define the network-wide real-time capacity, i.e., given a threshold for the per-hop success probability, how much data (in bit per second) can be delivered to the sink node meeting their deadlines. For these research results, we provide some application scenarios, including configuring packet deadlines or verifying a specific deadline configuration, setting a packet's priority for dynamic scheduling, and trading the reliability of real-time data delivery for capacity efficiency etc. We also study two special cases of WSNs, the chain model and the continuous model. Our slack distribution scheme yields consistent or similar results for these two special cases as that of past works, but is more adaptive by supporting more generic cases.","PeriodicalId":163002,"journal":{"name":"2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous","volume":"2007 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128915954","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: 4

Social context: Supporting interaction awareness in ubiquitous environments 社会背景:支持无处不在的环境中的交互意识

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.6835

M. Tran, Jun Han, A. Colman

{"title":"Social context: Supporting interaction awareness in ubiquitous environments","authors":"M. Tran, Jun Han, A. Colman","doi":"10.4108/ICST.MOBIQUITOUS2009.6835","DOIUrl":"https://doi.org/10.4108/ICST.MOBIQUITOUS2009.6835","url":null,"abstract":"In ubiquitous computing environments, certain entities (or actors) often need to interact with each other in achieving a joint goal in a dynamically changing context. To perform such interactions in a seamless manner, the actors need to be aware of not only their physical context (e.g. location) but also their changing relationships with respect to the particular task or goal. The latter interaction-oriented context, which we refer to as social context, has significant impacts on the way actors manage their adaptive behavior. However, very little research has focused on supporting such social context in ubiquitous environments. This paper presents our novel approach to modeling and realizing social context. Social context is modeled as a managed composition of loosely-coupled roles with their interaction relationships expressed as contracts. In addition, it is modeled from an individual actor's perspective to allow for possible differences in the actors' perception of the relationships. The social contexts of an actor are externalized from the actor itself to achieve easy management of the actors' adaptive behavior concerning interaction. A layered system architecture is introduced to realize the approach and demonstrate the development of automotive telematics systems that are physically and socially context-aware.","PeriodicalId":163002,"journal":{"name":"2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous","volume":"16 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120915381","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: 30

Resolving and mediating ambiguous contexts for pervasive care environments 解决和调解普遍护理环境的模糊背景

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.6999

Nirmalya Roy, C. Julien, Sajal K. Das

{"title":"Resolving and mediating ambiguous contexts for pervasive care environments","authors":"Nirmalya Roy, C. Julien, Sajal K. Das","doi":"10.4108/ICST.MOBIQUITOUS2009.6999","DOIUrl":"https://doi.org/10.4108/ICST.MOBIQUITOUS2009.6999","url":null,"abstract":"Ubiquitous (or smart) healthcare applications envision sensor rich computing and networking environments that can capture various types of contexts of patients (or inhabitants of the environment), such as their location, activities and vital signs. Such context information is useful in providing health related and wellness management services in an intelligent way so as to promote independent living. However, in reality, both sensed and interpreted contexts may often be ambiguous, leading to fatal decisions if not properly handled. Thus, a significant challenge facing the development of realistic and deployable context-aware services for healthcare applications is the ability to deal with ambiguous contexts to prevent hazardous situations. In this work, we propose a quality assured context mediation framework, based on efficient context-aware data fusion and information theoretic system parameter selection for optimal state estimation in resource constrained sensor network. The proposed framework provides a systematic approach based on dynamic Bayesian network to derive context fragments and deal with context ambiguity or error in a probabilistic manner. It has the ability to incorporate context representation according to the applications' quality requirement. Experimental results using SunSPOT sensors demonstrate the promise of this approach.","PeriodicalId":163002,"journal":{"name":"2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131338810","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: 2

Visual and interaction design themes in mobile healthcare 移动医疗中的视觉和交互设计主题

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.6751

B. Falchuk

{"title":"Visual and interaction design themes in mobile healthcare","authors":"B. Falchuk","doi":"10.4108/ICST.MOBIQUITOUS2009.6751","DOIUrl":"https://doi.org/10.4108/ICST.MOBIQUITOUS2009.6751","url":null,"abstract":"The opening-up of mobile application development has enabled the launches of successful “app stores” for iPhone, Android, Blackberry and others, from which innovative mobile applications are available. The healthcare realm is not left out; scores of health and wellness-related apps are available, though most (but not all) are simplistic, highly derivative or not overly compelling from graphical, creative, or usability points of view. In this paper we take a broader look at mobile platforms, enablers, and example healthcare applications that are noteworthy or representative in one way or another - these include some of the authors own research. We look at a series of exemplary and topical real-world examples to help us identify and support several overarching themes salient to mobile healthcare services. These themes include: the use of novel interaction techniques, the use of human-computer interface to encourage and mitigate movement and activity, and the use of graphics to improve the representation and understanding of medical, wellness, and life information. This paper, then, serves as a brief survey of existing health-related applications as well as an introduction to a few thought-provoking applications that “are not here yet” but promise to have an impact on mobile healthcare.","PeriodicalId":163002,"journal":{"name":"2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123499682","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: 15

Automation not automatically good in mobile social applications 在移动社交应用中，自动化并不总是好的

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.7025

S. Vihavainen, Antti Oulasvirta, R. Sarvas

{"title":"Automation not automatically good in mobile social applications","authors":"S. Vihavainen, Antti Oulasvirta, R. Sarvas","doi":"10.4108/ICST.MOBIQUITOUS2009.7025","DOIUrl":"https://doi.org/10.4108/ICST.MOBIQUITOUS2009.7025","url":null,"abstract":"Social interaction is increasingly computer mediated. Part of the mediated interaction is being automated by the technology used, especially in mobile phone technology. Human factors research has shown that automation is a mixed blessing. It changes the role of the human in the loop with effects on understanding, control, skill, vigilance, and ultimately trust and usefulness. The question we want to raise is: What are the implications of increasing automation in mobile social applications? Jaiku, a mobile awareness service, automates disclosure and diffusion of location metadata, and ZoneTag, a photo-uploading program, automates and suggests metadata associated with images. We discuss alternative models of automation in these systems and present a study of three user groups in Finland and California using Jaiku and ZoneTag. The results reveal issues related to control, understanding, emergent practices, and privacy. We discuss the potentials and limitations of automated solutions in this context and discuss about the need for further research on automation in mobile social applications.","PeriodicalId":163002,"journal":{"name":"2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115710352","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

Moderated group authoring among weakly connected workgroups 在弱连接的工作组之间进行适度的小组创作

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.7011

Surendar Chandra, Nathan Regola

引用次数: 0

Security for pervasive medical sensor networks 普及医疗传感器网络的安全性

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.6832

Óscar García-Morchón, T. Falck, T. Heer, Klaus Wehrle

{"title":"Security for pervasive medical sensor networks","authors":"Óscar García-Morchón, T. Falck, T. Heer, Klaus Wehrle","doi":"10.4108/ICST.MOBIQUITOUS2009.6832","DOIUrl":"https://doi.org/10.4108/ICST.MOBIQUITOUS2009.6832","url":null,"abstract":"Wireless sensor networks are going to allow for ubiquitous health monitoring, improving users' well-being, the healthcare system, and helping to quickly react on emergency situations. Meeting the strict security needs of these ubiquitous medical applications is a big challenge, since safety and privacy of medical data has to be guaranteed all the way from the sensor nodes to the back-end services, the system has to fulfill latency needs, and lots of mobility is expected. In this paper, we introduce a deployment model for wireless sensor networks for pervasive healthcare based on the concepts of patient area networks and medical sensor networks, and propose a complete and efficient security framework for them. Our security framework is organized into three layers, addressing the operational requirements and security needs at the patient area network, medical sensor network and back-end levels. We specify how these layers are interconnected with each other as well as the needed security mechanisms that allow for the efficient and practical deployment of secure pervasive healthcare systems based on wireless sensor networks.","PeriodicalId":163002,"journal":{"name":"2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126927226","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: 52

Presto: A pluggable platform for supporting user participation in smart workflows Presto:一个支持用户参与智能工作流的可插拔平台

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.6929

Pau Giner, Carlos Cetina, Joan Fons, V. Pelechano

引用次数: 3

Understanding and minimizing identity exposure in ubiquitous computing environments 理解和最小化无处不在的计算环境中的身份暴露

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.6853

Feng Zhu, S. Carpenter, Ajinkya Kulkarni, Chockalingam Chidambaram, Shruti Pathak

{"title":"Understanding and minimizing identity exposure in ubiquitous computing environments","authors":"Feng Zhu, S. Carpenter, Ajinkya Kulkarni, Chockalingam Chidambaram, Shruti Pathak","doi":"10.4108/ICST.MOBIQUITOUS2009.6853","DOIUrl":"https://doi.org/10.4108/ICST.MOBIQUITOUS2009.6853","url":null,"abstract":"Various miniaturized computing devices that store our identities are emerging rapidly. They allow our identity information to be easily exposed and accessed via wireless networks. When identity information is associated with our personal and context information that is gathered by ubiquitous computing devices, personal privacy might be unprecedentedly sacrificed. People, however, have different privacy protection skills, awareness, and privacy preferences. Individuals can be uniquely identified on the basis of only a few identity elements used in combination. To the best of our knowledge, this is the first study to understand the following issues and their relations: a) what identity elements people think are important; b) what actions people claim to take to protect their identities and privacy; c) privacy concerns; d) how people expose their identities in ubiquitous computing environments; and e) how our rational identity exposure model can help to minimize identity exposure. We build a simulated ubiquitous computing shopping system, called InfoSource. It consists of two applications and our rational identity exposure model. We present our experiments and statistical analysis results. Our data show that exposure decisions depend on participants' attitudes about maintaining privacy, but they do not depend on participants' concerns and claimed actions related to identity exposure. Our RationalExposure model helped participants to minimize unnecessary exposures.","PeriodicalId":163002,"journal":{"name":"2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121038259","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

Poster: An adaptive content sharing protocol for P2P Mobile Social Networks 面向P2P移动社交网络的自适应内容共享协议

2009 6th Annual International Mobile and Ubiquitous Systems: Networking & Services, MobiQuitous Pub Date : 2009-07-13 DOI: 10.4108/ICST.MOBIQUITOUS2009.7090

B. Qureshi, M. Ilyas, G. Min, D. Kouvatsos

引用次数: 3