Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability最新文献

Bridging the Gap between Mobile Application Contexts and Semantic Web Resources 弥合移动应用程序上下文和语义Web资源之间的差距

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 2009-05-15 DOI: 10.4018/978-1-60566-290-9.CH009

S. Dietze, A. Gugliotta, J. Domingue

{"title":"Bridging the Gap between Mobile Application Contexts and Semantic Web Resources","authors":"S. Dietze, A. Gugliotta, J. Domingue","doi":"10.4018/978-1-60566-290-9.CH009","DOIUrl":"https://doi.org/10.4018/978-1-60566-290-9.CH009","url":null,"abstract":"Context-awareness is highly desired, particularly in highly dynamic mobile environments. Semantic Web Services (SWS) address context-adaptation by enabling the automatic discovery of distributed Web services based on comprehensive semantic capability descriptions. Even though the appropriateness of resources in mobile settings is strongly dependent on the current situation, SWS technology does not explicitly encourage the representation of situational contexts. Therefore, whereas SWS technology supports the allocation of resources, it does not entail the discovery of appropriate SWS representations for a given situational context. Moreover, describing the complex notion of a specific situation by utilizing symbolic SWS representation facilities is costly, prone to ambiguity issues and may never reach semantic completeness. In fact, since not any real-world situation completely equals another, a potentially infinite set of situation parameters has to be matched to a finite set of semantically defined SWS reso rce descriptions to enable context-adaptability. To overcome these issues, the authors propose Mobile Situation Spaces (MSS) which enable the description of situation characteristics as members in geometrical vector spaces following the idea of Conceptual Spaces (CS). Semantic similarity between situational contexts is calculated in terms of their Euclidean distance within a MSS. Extending merely symbolic SWS descriptions with context information on a conceptual level through MSS enables similarity-based matchmaking between real-world situation characteristics and predefined resource representations as part of SWS descriptions. To prove the feasibility, the authors provide a proof-of-concept prototype which applies MSS to support context-adaptation across distinct mobile situations.","PeriodicalId":387773,"journal":{"name":"Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133396454","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

Privacy Automation in Context-Aware Services 上下文感知服务中的隐私自动化

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH013

A. A. Eldin, S. Daskapan, J. Berg

引用次数: 3

Distributed Context Management in Support of Multiple Remote Users 支持多远程用户的分布式上下文管理

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH004

I. Roussaki, M. Strimpakou, C. Pils, N. Kalatzis, N. Liampotis

引用次数: 11

Access Control in Mobile and Ubiquitous Environments 移动和泛在环境中的访问控制

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH012

L. Gomez, Annett Laube, A. Sorniotti

{"title":"Access Control in Mobile and Ubiquitous Environments","authors":"L. Gomez, Annett Laube, A. Sorniotti","doi":"10.4018/978-1-60566-290-9.CH012","DOIUrl":"https://doi.org/10.4018/978-1-60566-290-9.CH012","url":null,"abstract":"Access control is the process of granting permissions in accordance to an authorization policy. Mobile and ubiquitous environments challenge classical access control solutions like Role-Based Access Control. The use of context-information during policy definition and access control enforcement offers more adaptability and flexibility needed for these environments. When it comes to low-power devices, such as wireless sensor networks, access control enforcement is normally too heavy for such resource-constrained devices. Lightweight cryptography allows encrypting the data right from its production and the access is therefore intrinsically restricted. In addition, all access control mechanisms require an authenticated user. Traditionally, user authentication is performed by means of a combination of authentication factors, statically specified in the access control policy of the authorization service. Within ubiquitous and mobile environment, there is a clear need for a flexible user authentication using the available authentication factors. In this chapter, different new techniques to ensure access control are discussed and compared to the state-of-the-art.","PeriodicalId":387773,"journal":{"name":"Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115492582","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

Leveraging Semantic Technologies towards Social Ambient Intelligence 利用语义技术实现社会环境智能

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH014

Adrien Joly, P. Maret, Fabien Bataille

引用次数: 3

Context-Aware Database Querying 上下文感知数据库查询

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH006

Yuanping Li, Ling Feng, Lizhu Zhou

引用次数: 2

Ontology Based Context-Aware Adaptation Approach 基于本体的上下文感知自适应方法

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH002

T. Chaari, Mohamed Zouari, F. Laforest

{"title":"Ontology Based Context-Aware Adaptation Approach","authors":"T. Chaari, Mohamed Zouari, F. Laforest","doi":"10.4018/978-1-60566-290-9.CH002","DOIUrl":"https://doi.org/10.4018/978-1-60566-290-9.CH002","url":null,"abstract":"Pervasive information systems aim to make information available anywhere and at anytime. These systems should be used in different contexts depending on the environment of the user, her/his profile and her/his device. Consequently, one of the main problems of such information systems is the adaptation to context. In this chapter, the authors propose a comprehensive and open strategy that guarantees the adaptation of applications to context on three facets: (i) the services offered to the user, (ii) the multimedia contents returned by these services, and (iii) their presentation to the user. Service adaptation consists of modules that intercept the application’s service calls and modify their behavior using a list of functional adaptation operators. Data adaptation consists in transforming or replacing the non-usable multimedia service outputs in the considered context situation. Presentation adaptation consists in automatically generating the complete code of the user interface that guarantees the interaction with the adapted data and services. The authors’ adaptation strategy has achieved two goals: (i) incrementally integrate context awareness in the application and (ii) guarantee the adaptation starting from a simple description of the services offered to the user. They have validated this strategy by developing a platform that guarantees applications adaptation to context. They used Java, OSGi and Web service technologies to implement this platform. They have also successfully tested our adaptation approach on a home healthcare application concerning dialyzed persons.","PeriodicalId":387773,"journal":{"name":"Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134270742","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

An Adaptable Context Management Framework for Pervasive Computing 面向普适计算的适应性上下文管理框架

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH005

J. Zebedee, Patrick Martin, Kirk Wilson, W. Powley

引用次数: 9

Employing Context Information and Semantics to Advance Responsiveness in Service Composition 利用上下文信息和语义提高服务组合的响应性

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.CH007

C. Jacob, H. Pfeffer, S. Steglich

引用次数: 2

Context-Aware Applications for the Web 面向Web的上下文感知应用程序

Context-Aware Mobile and Ubiquitous Computing for Enhanced Usability Pub Date : 1900-01-01 DOI: 10.4018/978-1-60566-290-9.ch003

F. Daniel

引用次数: 0