scholarly journals A Semantic Infrastructure for Personalisable Context-Aware Environments

AI Magazine ◽  
2015 ◽  
Vol 36 (2) ◽  
pp. 73-84 ◽  
Author(s):  
Simon Scerri ◽  
Jeremy Debattista ◽  
Judie Attard ◽  
Ismael Rivera
Keyword(s):  
Data Sharing ◽  
Context Awareness ◽  
Use Cases ◽  
Context Aware ◽  
Proof Of Concept ◽  
Context Sensitive ◽  
Situation Recognition ◽  
Context Aware System ◽  
Personal Devices ◽  
Standard Framework

Although a number of initiatives provide personalized context-aware guidance for niche use-cases, a standard framework for context awareness remains lacking. This article explains how semantic technology has been exploited to generate a centralized repository of personal activity context. This data drives advanced features such as, personal situation recognition and customizable rules for the context-sensitive management of personal devices and data sharing. As a proof-of-concept, we demonstrate how an innovative context-aware system has successfully adopted such an infrastructure.

scholarly journals Design and implementation of a Context-Aware Health Service Platform (CAHS)

2019 ◽  
Vol 9 (6) ◽  
pp. 4993
Author(s):  
Siham Belhadi ◽  
Rachid Merzougui
Keyword(s):  
Health Service ◽  
Context Awareness ◽  
Context Aware ◽  
Context Management ◽  
Context Sensitive ◽  
Dynamic Architecture ◽  
Design And Implementation ◽  
Situational Information ◽  
User Intervention ◽  
Health Applications

<p>Computers are no match to humans in deducing situational information from their environment and in using it in their interactions. The advent of the context-aware applications seems to offer a way out to the computer that is not context-sensitive. The context aware applications can adapt their behaviors according to the perceived context or situation, without explicit user intervention, thereby providing human-centric services. To simplify the complexity of developing applications, context aware framework, which introduces context awareness into the environment where the applications are executed, is highlighted to provide a homogeneous interface involving generic context management and adaptation solutions. This papier has focused on the design of Context-Aware Health Services (CAHS) platform, which provide a health applications framework embedded on mobile devices. Our proposed platform is capabilities for context manager and adaptations according to context changes. It is designed to base on the SOA principles for achieving a flexible and dynamic architecture.</p>

Pervasive Computing in the Supermarket

2012 ◽  
pp. 172-185 ◽  
Author(s):  
Darren Black ◽  
Nils Jakob Clemmensen ◽  
Mikael B. Skov
Keyword(s):  
Empirical Study ◽  
Real World ◽  
Context Awareness ◽  
Empirical Evaluation ◽  
Context Aware ◽  
Uniform Pattern ◽  
User Attention ◽  
Context Aware System ◽  
Mobile Context ◽  
Interactive Experience

Shopping in the real world is becoming an increasingly interactive experience as stores integrate various technologies to support shoppers. Based on an empirical study of supermarket shoppers, the authors designed a mobile context-aware system called the Context-Aware Shopping Trolley (CAST). The purpose of CAST is to support shopping in supermarkets through context-awareness and acquiring user attention, thus, the authors’ interactive trolley guides and directs shoppers in the handling and finding of groceries. An empirical evaluation showed that shoppers using CAST behaved differently than shoppers using a traditional trolley. Specifically, shoppers using CAST exhibited a more uniform pattern of product collection and found products more easily while travelling a shorter distance. As such, the study finds that CAST supported the supermarket shopping activity.

The Context-Security Nexus in Ubiquitous Computing

2016 ◽  
pp. 660-679
Author(s):  
M. Fahim Ferdous Khan ◽  
Ken Sakamura
Keyword(s):  
Access Control ◽  
Ubiquitous Computing ◽  
Context Awareness ◽  
Contextual Information ◽  
Healthcare Services ◽  
Context Aware ◽  
Context Sensitive ◽  
Access Control Models ◽  
Spatio Temporal ◽  
The Right

Context-awareness is a quintessential feature of ubiquitous computing. Contextual information not only facilitates improved applications, but can also become significant security parameters – which in turn can potentially ensure service delivery not to anyone anytime anywhere, but to the right person at the right time and place. Specially, in determining access control to resources, contextual information can play an important role. Access control models, as studied in traditional computing security, however, have no notion of context-awareness; and the recent works in the nascent field of context-aware access control predominantly focus on spatio-temporal contexts, disregarding a host of other pertinent contexts. In this paper, with a view to exploring the relationship of access control and context-awareness in ubiquitous computing, the authors propose a comprehensive context-aware access control model for ubiquitous healthcare services. They explain the design, implementation and evaluation of the proposed model in detail. They chose healthcare as a representative application domain because healthcare systems pose an array of non-trivial context-sensitive access control requirements, many of which are directly or indirectly applicable to other context-aware ubiquitous computing applications.

Pervasive Computing in the Supermarket

2010 ◽  
Vol 2 (3) ◽  
pp. 31-43 ◽  
Author(s):  
Darren Black ◽  
Nils Jakob Clemmensen ◽  
Mikael B. Skov
Keyword(s):  
Empirical Study ◽  
Pervasive Computing ◽  
Real World ◽  
Context Awareness ◽  
Empirical Evaluation ◽  
Context Aware ◽  
User Attention ◽  
Context Aware System ◽  
Mobile Context ◽  
Interactive Experience

Shopping in the real world is becoming an increasingly interactive experience as stores integrate various technologies to support shoppers. Based on an empirical study of supermarket shoppers, the authors designed a mobile context-aware system called the Context-Aware Shopping Trolley (CAST). The purpose of CAST is to support shopping in supermarkets through context-awareness and acquiring user attention, thus, the authors’ interactive trolley guides and directs shoppers in the handling and finding of groceries. An empirical evaluation showed that shoppers using CAST behaved differently than shoppers using a traditional trolley. Specifically, shoppers using CAST exhibited a more uniform pattern of product collection and found products more easily while travelling a shorter distance. As such, the study finds that CAST supported the supermarket shopping activity.

Is Group-Awareness Context-Awareness?

2019 ◽  
Vol 15 (3) ◽  
pp. 1-19
Author(s):  
Manuele Kirsch Pinheiro ◽  
Carine Souveyet
Keyword(s):  
Context Awareness ◽  
Relevant Information ◽  
Context Information ◽  
Context Aware ◽  
System Behavior ◽  
Group Awareness ◽  
Awareness Information ◽  
Unified View ◽  
Context Aware System ◽  
Awareness Context

This article discusses the interest of emerging a unified view for group awareness and context information on groupware and context-aware systems. Group awareness corresponds to an important concept on Groupware applications, allowing individual users to be kept aware of group's activities and status. Context is defined by ubiquitous computing as any relevant information that can be used to characterize the situation of an entity. We assume that group awareness information should be considered as context information and handled as such. Group awareness information is often employed for decision making, contributing to users' activities and decisions, but it gives also an important clue about user's context, characterizing individual's actions regarding the group. As such, group awareness may be used for adaptation purposes, adapting the system behavior, the supplied content or its services. Besides, architectural concerns adopted on context-aware system should also be considered when developing new groupware applications that are more and more designed as context-aware systems.

Context Inference Engine (CiE)

2012 ◽  
Vol 4 (3) ◽  
pp. 13-41 ◽  
Author(s):  
Umar Mahmud ◽  
Mohammed Younus Javed
Keyword(s):  
Standard Deviation ◽  
Context Awareness ◽  
Distance Measure ◽  
Inference Engine ◽  
General Context ◽  
Context Aware ◽  
Contextual Data ◽  
Classification Approach ◽  
Current Context ◽  
Context Aware System

Context Awareness is the task of inferring contextual data acquired through sensors present in the environment. ‘Context’ encompasses all knowledge bounded by a scope and includes attributes of machines and users. A general context aware system is composed of context gathering and context inference modules. This paper proposes a Context Inference Engine (CiE) that classifies the current context as one of several recorded context activities. The engine follows a distance measure based classification approach with standard deviation based ranks to identify likely activities. The paper presents the algorithm and some results of the context classification process.

The Context-Security Nexus in Ubiquitous Computing

2014 ◽  
Vol 5 (3) ◽  
pp. 61-81
Author(s):  
M. Fahim Ferdous Khan ◽  
Ken Sakamura
Keyword(s):  
Access Control ◽  
Ubiquitous Computing ◽  
Context Awareness ◽  
Contextual Information ◽  
Healthcare Services ◽  
Context Aware ◽  
Context Sensitive ◽  
Spatio Temporal ◽  
The Right ◽  
Relationship Of

Context-awareness is a quintessential feature of ubiquitous computing. Contextual information not only facilitates improved applications, but can also become significant security parameters – which in turn can potentially ensure service delivery not to anyone anytime anywhere, but to the right person at the right time and place. Specially, in determining access control to resources, contextual information can play an important role. Access control models, as studied in traditional computing security, however, have no notion of context-awareness; and the recent works in the nascent field of context-aware access control predominantly focus on spatio-temporal contexts, disregarding a host of other pertinent contexts. In this paper, with a view to exploring the relationship of access control and context-awareness in ubiquitous computing, the authors propose a comprehensive context-aware access control model for ubiquitous healthcare services. They explain the design, implementation and evaluation of the proposed model in detail. They chose healthcare as a representative application domain because healthcare systems pose an array of non-trivial context-sensitive access control requirements, many of which are directly or indirectly applicable to other context-aware ubiquitous computing applications.

Flow and Threat Modelling of a Context Aware System

2014 ◽  
Vol 6 (2) ◽  
pp. 58-70 ◽  
Author(s):  
Umar Mahmud ◽  
Nazir Ahmad Malik
Keyword(s):  
Context Awareness ◽  
Flow Model ◽  
Security Threats ◽  
Context Aware ◽  
Design Phase ◽  
Current Activity ◽  
Multiple Devices ◽  
The Common ◽  
Threat Modelling ◽  
Context Aware System

The production of smart, seamless and economical devices has paved the way for the development of context aware systems. Context awareness allows a system to classify the current activity based on the context as measured by the sensors present in the devices. With the presence of multiple devices and services in the environment security threats are expected. The threats can be modelled during the design phase. This article presents a flow model of a context aware system that classifies current activity based on the context. The threat modelling of the context aware system is carried out using STRIDE classification. The common countermeasures are also presented.

Ubiquitous Healthcare

2010 ◽  
pp. 254-280
Author(s):  
Theodor Panagiotakopoulos ◽  
Maria-Anna Fengou ◽  
Dimitrios Lymberopoulos ◽  
Eduard Babulak
Keyword(s):  
Ubiquitous Computing ◽  
Context Awareness ◽  
Daily Activity ◽  
Context Aware ◽  
Ubiquitous Healthcare ◽  
Computing Environments ◽  
Context Aware System ◽  
The Impact ◽  
Ubiquitous Computing Environments ◽  
Generic System

We have already moved away from traditional desktop-based computer technologies towards ubiquitous computing environments that progressively exist in our daily activity. This chapter introduces the concept of ubiquitous computing in the domain of healthcare as well as the prevalent technology its implementation depends on. This technology, named context-awareness, and a generic system for its realization are comprehensively described. Furthermore, the authors outline the main services that a context-aware system can provide and concluding they discuss the impact of ubiquitous computing in the healthcare domain. The authors aim at providing an overview of the technological proceedings in this area and through this understanding assist researchers to their brainstorming.

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