Note: This page contains sample records for the topic context aware applications from Science.gov.
While these samples are representative of the content of Science.gov,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of Science.gov
to obtain the most current and comprehensive results.
Last update: November 12, 2013.
1

Context-Aware Recommendations in the Mobile Tourist Application COMPASS  

Microsoft Academic Search

This paper describes the context- aware mobile tourist application COMPASS that adapts its services to the user's needs based on both the user's interests and his current context. In order to provide context-aware recommendations, a recommender system has been integrated with a context- aware application platform. We describe how this integration has been accomplished and how users feel about such

Mark Van Setten; Stanislav Pokraev; Johan Koolwaaij

2004-01-01

2

Context-aware applications: from the laboratory to the marketplace  

Microsoft Academic Search

Current hardware developments are making mobile computing increasingly attractive. An important class of mobile applications are context-aware applications: applications that change their behaviour according to the user's present context-their location, who they are with, what the time of day is, and so on. This article is about software design for context-aware applications. Currently most such applications have been crafted by

P. J. Brown; J. D. Bovey; Xian Chen

1997-01-01

3

Context-Aware Application System for Music Playing Services  

Microsoft Academic Search

\\u000a Context-awareness is a technology to facilitate information acquisition and execution by supporting interoperability between\\u000a users and devices based on users’ context. In this paper, we design a middleware and a context server for dealing with context-aware\\u000a application system in ubiquitous computing. The middleware plays an important role in recognizing a moving node with mobility\\u000a as well as in executing an

Jae-woo Chang; Yong-ki Kim

2006-01-01

4

TAKING THE NEXT STEP IN CONTEXT-AWARE APPLICATIONS  

Microsoft Academic Search

In this paper, it is established that there are many tough challenges when developing context- aware applications. Much discussion is going on in this area and the related areas of mobile, pervasive and ubiquitous computing. Eight major issues are identified and used as a theoretical overview and background for this paper. Moving on, it is argued that although many prototypes

Carl Magnus Olsson

5

The cricket compass for context-aware mobile applications  

Microsoft Academic Search

The ability to determine the orientation of a device is of fundamental importance in context aware and location-dependent mobile computing. By analogy to a traditional compass, knowledge of orientation through the Cricket compass attached to a mobile device enhances various applications, including efficient way-finding and navigation, directional service discovery, and “augmented-reality” displays. Our compass infrastructure enhances the spatial inference capability

Nissanka B. Priyantha; Allen K. L. Miu; Hari Balakrishnan; Seth J. Teller

2001-01-01

6

schema <\\/Context-Aware  

Microsoft Academic Search

Context for the computer can be decomposed into three parts - information about the computing environment, information about the physical environment, and information about the user's history. In order to author a context-aware application, this information must be available in a standardized fashion. The EasyLiving Project at Microsoft Research is building a prototype smart environment that supports several context-aware applications.

Brian Meyers; Amanda Kern

7

Model, Properties, and Applications of Context-Aware Web Services  

Microsoft Academic Search

Context-aware Web services is a seamless interaction between service requestors and services considering both contextual requirements\\u000a of services and contextual conditions of the service requestors. We envision that providing context- aware Web services is\\u000a the first step toward the ultimate goal of e-services by delivering right services from right partners at right time. This\\u000a chapter aims for the models, properties,

Stephen J. H. Yang; Jia Zhang; Angus F. M. Huang

8

Adaptive middleware for context-aware applications in smart-homes  

Microsoft Academic Search

We propose an adaptive middleware design for context-aware applications that abstracts the applications from the sensors that provide context. Further, we use application-specific utility functions to choose, given multiple alternatives for providing a specific context, one alternative at any time that provides the context for all applications, whilst maximising the applications' total \\

Markus C. Huebscher; Julie A. McCann

2004-01-01

9

Pennyworth: A platform for building context-aware applications for everyday use  

Microsoft Academic Search

In this work we describe Pennyworth, a software system that provides both a reusable context inference engine and an infrastructure that supports context-aware features across a variety of heterogeneous applications.

Chris Karr; Darren Gergle

10

Retrieval of context-aware applications on mobile devices: how to evaluate?  

Microsoft Academic Search

This paper discusses the issue of evaluation of context-aware retrieval applications. We begin by describing MoBe, a specific architecture that allows automatic download and execution of context-aware applications on mobile devices. In MoBe, the most relevant applications are selected by matching context and application descriptors. Since several alternatives for descriptors implementation exist, it is important to compare their effectiveness. To

Stefano Mizzaro; Elena Nazzi; Luca Vassena

2008-01-01

11

MoCoA: Customisable Middleware for Context-Aware Mobile Applications  

Microsoft Academic Search

Many programming models have been proposed to facilitate the development of context-aware applications. However, previous work does not offer support for building customised systems and has largely been targeted at a single application domain. In this paper, we describe MoCoA, a flexible middleware framework that permits the rapid devel- opment of context-aware applications and supports deployment scenarios ranging from augmented

Aline Senart; Raymond Cunningham; Mélanie Bouroche; Neil O’Connor; Vinny Reynolds; Vinny Cahill

2006-01-01

12

Context-Aware Monitoring of Untrusted Mobile Applications  

NASA Astrophysics Data System (ADS)

Current measures to enhance the security of untrusted mobile applications require a user to trust the software vendor. They do not guarantee complete protection against the behaviours that mobile malware commonly exhibits. This paper expands execution monitoring, building a more precise system to prevent mobile applications deviating from their intended functions. User judgements about program execution can be specified abstractly and compiled into a monitor capable of identifying an event’s context. We demonstrate our development of a prototype system for the BlackBerry platform and show how it can defend the device against unseen malware more effectively than existing security tools.

Brown, Andrew; Ryan, Mark

13

Network Layer Access Control for Context-Aware IPv6 Applications  

Microsoft Academic Search

As part of the Lancaster GUIDE II project, we have developed a novel wireless access point protocol designed to support the development of next generation mobile context-aware applications in our local environs. Once deployed, this architecture will allow ordinary citizens secure, accountable and convenient access to a set of tailored applications including location, multimedia and context based services, and the

Adrian Friday; Maomao Wu; Joe Finney; Stefan Schmid; Keith Cheverst; Nigel Davies

2003-01-01

14

Requirements elicitation for the design of context-aware applications in a ubiquitous environment  

Microsoft Academic Search

With the invention of new interaction devices and the requirements for ubiquitous access to application systems, user's interactions have moved beyond the desktop and evolved into a trend of ongoing development. The context in which the application is being used becomes an integral part of the activity carried out with the system. The inclusion of context-awareness provides convenience and efficiency

Dan Hong; Dickson K. W. Chiu; Vincent Y. Shen

2005-01-01

15

The stick-e document: a framework for creating context-aware applications  

Microsoft Academic Search

SUMMARY There is increasing interest in computer applications that are aware of the user's context. Currently these applications are normally hand-crafted. A lot of them consist of presenting information to users as they enter a given context, for example a tourist nearing a site within a city or a visitor moving round a building. The paper presents a new form

P. J. BROWN

1995-01-01

16

ProQuPri: towards anonymity protection with privacy quantification for context-aware applications  

Microsoft Academic Search

Privacy is the most often-cited criticism of context awareness in pervasive environments and may be the utmost barrier to its enduring success. Users certainly desire to be notified of potential data capture. Context-based pervasive applications have the vulnerabilities of tracking and capturing extensive portions of users' activities. Whether such data capture is an actual threat or not, users' perceptions of

Farzana Rahman; Sheikh Iqbal Ahamed

2011-01-01

17

A context-aware middleware for applications in mobile Ad Hoc environments  

Microsoft Academic Search

Novel ubiquitous computing applications such as intelligent vehicles, smart buildings, and traffic management require special properties that traditional computing applications do not support, such as context-awareness, massive decentralisation, autonomous behaviour, adaptivity, proactivity, and innate collaboration. This paper presents a new computational model and middleware that reflect support for the required the properties. The sentient object model is proposed by the

Carl-Fredrik Sørensen; Maomao Wu; Thirunavukkarasu Sivaharan; Gordon S. Blair; Paul Okanda; Adrian Friday; Hector A. Duran-Limon

2004-01-01

18

Context-Aware Data Mining Framework for Wireless Medical Application  

Microsoft Academic Search

Data mining, which aims at extracting interesting informa- tion from large collections of data, has been widely used as an eective decision making tool. Mining the datasets in the presence of context fac- tors may improve performance and ecacy of data mining by identifying the unknown factors, which are not easily detectable in the process of generating an expected outcome.

Pravin Vajirkar; Sachin Singh; Yugyung Lee

2003-01-01

19

Dynamic, Context-Aware Access Control for Distributed Healthcare Applications  

Microsoft Academic Search

The rapid worldwide deployment of the Internet and Web is the enabler of a new generation of e-healthcare applications, but the provision of a security architecture that can ensure the privacy and security of sensitive healthcare data is still an open question. Current solutions to this problem (mostly built on static RBAC models) are application-dependent and do not address the

Junzhe Hu; Alfred C. Weaver

20

Securing context-aware applications using environment roles  

Microsoft Academic Search

In the future, a largely invisible and ubiquitous computing infrastructure will assist people with a variety of activities in the home and at work. The applications that will be deployed in such systems will create and manipulate private information and will provide access to a variety of other resources. Securing such applications is challenging for a number of reasons. Unlike

Michael J. Covington; Wende Long; Srividhya Srinivasan; Anind K. Dev; Mustaque Ahamad

2001-01-01

21

Acoustic and visual signal based context awareness system for mobile application  

Microsoft Academic Search

In this paper, an acoustic and visual signal based context awareness system is proposed for a mobile application. The proposed system senses and determines, in real time, user contextual information, such as where the user is or what the user does, by processing signals from the microphone and the camera embedded in the mobile device. An initial implementation of the

Woo-Hyun Choi; Seung-Il Kim; Min-Seok Keum; Wang Han; Hanseok Ko; David K. Han

2011-01-01

22

Context-aware event detection smartphone application for first responders  

NASA Astrophysics Data System (ADS)

The rise of social networking platforms like Twitter, Facebook, etc…, have provided seamless sharing of information (as chat, video and other media) among its user community on a global scale. Further, the proliferation of the smartphones and their connectivity networks has powered the ordinary individuals to share and acquire information regarding the events happening in his/her immediate vicinity in a real-time fashion. This human-centric sensed data being generated in "human-as-sensor" approach is tremendously valuable as it delivered mostly with apt annotations and ground truth that would be missing in traditional machine-centric sensors, besides high redundancy factor (same data thru multiple users). Further, when appropriately employed this real-time data can support in detecting localized events like fire, accidents, shooting, etc…, as they unfold and pin-point individuals being affected by those events. This spatiotemporal information, when made available for first responders in the event vicinity (or approaching it) can greatly assist them to make effective decisions to protect property and life in a timely fashion. In this vein, under SATE and YATE programs, the research team at AFRL Tec^Edge Discovery labs had demonstrated the feasibility of developing Smartphone applications, that can provide a augmented reality view of the appropriate detected events in a given geographical location (localized) and also provide an event search capability over a large geographic extent. In its current state, the application thru its backend connectivity utilizes a data (Text & Image) processing framework, which deals with data challenges like; identifying and aggregating important events, analyzing and correlating the events temporally and spatially and building a search enabled event database. Further, the smartphone application with its backend data processing workflow has been successfully field tested with live user generated feeds.

Boddhu, Sanjay K.; Dave, Rakesh P.; McCartney, Matt; West, James A.; Williams, Robert L.

2013-05-01

23

Context-aware tunable office lighting application and user response  

NASA Astrophysics Data System (ADS)

LED light sources having multiple independently controllable color channels allow tuning of both the intensity and color output. Consequently, highly tailored lighting can be applied according to instantaneous user needs and preferences. Besides improving lighting performance, energy use can also be reduced since the brightest illumination is applied only when necessary. In an example application, low activity or vacant areas of a multi-zone office are lit by low power illumination, including colored light options, which can reduce energy consumption to 20-45% of typical full-time, fullbrightness, office-wide illumination. The availability of color also allows communication functions and additional aesthetic design possibilities. To reduce user burden in frequent switching between various illumination settings, an activity recognition sensor network is used to identify selected office activities. The illumination is then adjusted automatically to satisfy the needs of the occupants. A handheld mobile device provides an interactive interface for gathering user feedback regarding impressions and illumination preferences. The activity-triggered queries collect contemporaneous feedback that reduces reliance on memory; immediate previews of illumination options are also provided. Through mobile queries and post-experience interviews, user feedback was gathered regarding automation, colored lighting, and illumination preferences. Overall reaction was indicated by a range of response words such as fun, stimulating, very cool, very pleasant, enjoyed, good, comfortable, satisfactory, fine, energy saving, interesting, curious, dim, cave, isolated, distracting, and unfamiliar. Positive reaction from a meaningful, though not universal, fraction of users indicates reasonable application potential, particularly as personal preferences and control are accommodated.

Chen, Nancy H.; Nawyn, Jason; Thompson, Maria; Gibbs, Julie; Larson, Kent

2013-09-01

24

Dynamic Request Allocation and Scheduling for Context Aware Applications Subject to a Percentile Response Time SLA in a Distributed Cloud  

Microsoft Academic Search

We consider geographically distributed data centers forming a collectively managed cloud computing system, hosting multiple Service Oriented Architecture (SOA) based context aware applications, each subject to Service Level Agreements (SLA). The Service Level Agreements for each context aware application require the response time of a certain percentile of the input requests to be less than a specified value for a

Keerthana Boloor; Rada Chirkova; Yannis Viniotis; Tiia Salo

2010-01-01

25

Management of SOA-Based Context-Aware Applications Hosted in a Distributed Cloud Subject to Percentile Constraints  

Microsoft Academic Search

We consider geographically distributed datacen- ters forming a collectively managed cloud computing sys- tem. Multiple SaaS providers host their SOA-based, context- aware applications in the cloud. Typically, the context-aware applications serve multiple classes of customers (end users) classified on economic considerations, which determine the Quality of Service (QoS) received by each class. This need for differentiated QoS for each customer

Keerthana Boloor; Rada Chirkova; Tiia Salo; Yannis Viniotis

2011-01-01

26

ACAI: agent-based context-aware infrastructure for spontaneous applications  

Microsoft Academic Search

The vision of people amalgamated with their surroundings in a spontaneous way created a new, context-aware era of human-computer interaction. The goal is to provide an infrastructure that can understand the current situation and act on that understanding. Context-awareness means that people, services and artifacts in an environment are integrated in a homogeneous manner in order to provide seamless service

Mohamed Khedr; Ahmed Karmouch

2005-01-01

27

A Framework for Decentralized, Context-Aware Mobile Applications Using Semantic Web Technology  

Microsoft Academic Search

The recent evolution in mobile devices, combined with rapid advancements in identification techniques, has lead to new opportunities for mobile application developers: mobile applications that can be made aware of their environment and the objects in it. Additionally, by combining mobile devices and identification technology with the Web, mobile applications can be developed that exploit services and information associated with

William Van Woensel; Sven Casteleyn; Olga De Troyer

2009-01-01

28

Context-aware kitchen utilities  

Microsoft Academic Search

We report on approaches for context-awareness in a kitchen environment. Two devices, an augmented cutting board and a sensor-enriched knife, enable the environment to deter- mine the type of food handled during the preparation of

Matthias Kranz; Albrecht Schmidt; Alexis Maldonado; Radu Bogdan Rusu; Michael Beetz; Benedikt Hörnler; Gerhard Rigoll

2007-01-01

29

Context-aware textures  

Microsoft Academic Search

Interesting textures form on the surfaces of objects as the result of external chemical, mechanical, and biological agents. Simulating these textures is necessary to generate models for realistic image synthesis. The textures formed are progressively variant, with the variations depending on the global and local geometric context. We present a method for capturing progressively varying textures and the relevant context

Jianye Lu; Athinodoros S. Georghiades; Andreas Glaser; Hongzhi Wu; Li-yi Wei; Baining Guo; Julie Dorsey; Holly E. Rushmeier

2007-01-01

30

Predictive context aware mobility handling  

Microsoft Academic Search

The handling of device multi-homing and mobility, such as deciding which network interface to use or when to perform vertical handoff between network interfaces, can be greatly enhanced by considering recent context information. We describe a system for context aware multi-homing and mobility handling which enacts network interface allocation and handoff decisions based on the predicted characteristics of transport layer

Stephen Herborn; Henrik Petander; Max Ott

2008-01-01

31

Context-Aware Recommender Systems  

Microsoft Academic Search

? Context-aware recommender systems (CARS) generate more relevant recommenda- tions by adapting them to the specific contextu- al situation of the user. This article explores how contextual information can be used to cre- ate intelligent and useful recommender systems. It provides an overview of the multifaceted notion of context, discusses several approaches for incorporating contextual information in the recommendation process,

Gediminas Adomavicius; Bamshad Mobasher; Francesco Ricci; Alex Tuzhilin

2011-01-01

32

Issues in Developing Context-Aware Computing  

Microsoft Academic Search

Two differing context-aware projects are described in this paper as a basis for exploring and better understanding the nature\\u000a of context and contextaware applications. The investigation reveals that although indeed a useful concept, better supporting\\u000a infrastructure is required before it can become a feasible mainstream technology. In particular, we propose the concept of\\u000a a context information service to address this

Jason Pascoe; Nick Ryan; David R. Morse

1999-01-01

33

The Conference Assistant: Combining Context-Awareness with Wearable Computing  

Microsoft Academic Search

We describe the Conference Assistant, a prototype mobile, context-aware application that assists conference attendees. We discuss the strong relationship between context-awareness and wearable computing and apply this relationship in the Conference Assistant. The application uses a wide variety of context and enhances user interactions with both the environment and other users. We describe how the application is used and the

Anind K. Dey; Daniel Salber; Masayasu Futakawa

1999-01-01

34

CARISMA: Context-Aware Reflective mIddleware System for Mobile Applications  

Microsoft Academic Search

Mobile devices, such as mobile phones and personal digital assistants, have gained wide-spread popularity. These devices will increasingly be networked, thus enabling the con- struction of distributed applications that have to adapt to changes in context, such as variations in network bandwidth, battery power, connectivity, reachability of services and hosts, and so on. In this paper we describe CARISMA, a

Licia Capra; Wolfgang Emmerich; Cecilia Mascolo

2003-01-01

35

ACAN - Ad hoc Context Aware Network  

Microsoft Academic Search

This paper presents the design and system architecture of the Ad hoc Context Aware Network (ACAN), a wireless environment with no pre-configuration and with spontaneous applications running according to the contextual situation. The ACAN is a new vision to the future of the wireless networks where it will consist of sensors that will capture the entities in the environment and

Mohamed Khedr; Ahmed Karmouch

2002-01-01

36

Context-aware communication with Live Contacts  

Microsoft Academic Search

We demonstrate Live Contacts, a .NET-based context-aware communication application that runs on Pocket PC phones, Smartphones and desktop PCs. In just four clicks, Live Contacts helps you to contact the right person at the right time via the right communication channel. To achieve this, Live Contacts provides up-to-date context information about your most important contacts, including instant messaging status, current

G. Henri; Raymond A. A. Otte; Hans C. J. Kruse; Martin Snijders

37

Context Awareness and Adaptation in Mobile Learning  

Microsoft Academic Search

This study investigates the importance of context-awareness and adaptation in mobile learning. Context-aware mobile learning that senses mobile environment and reacts to changing context during learning process has four interaction modes with three mobile entities of different mobility. Contexts in mobile learning are categorized into six dimensions that form a context space. Several mobile learning systems are examined according to

Yuan-kai Wang

2004-01-01

38

Context-aware smart car: from model to prototype  

Microsoft Academic Search

Smart cars are promising application domain for ubiquitous computing. Context-awareness is the key feature of a smart car\\u000a for safer and easier driving. Despite many industrial innovations and academic progresses have been made, we find a lack of\\u000a fully context-aware smart cars. This study presents a general architecture of smart cars from the viewpoint of context-awareness.\\u000a A hierarchical context model

Jie Sun; Zhao-hui Wu; Gang Pan

2009-01-01

39

Minimalism context-aware displays.  

PubMed

Despite the rapid development of cyber technologies, today we still have very limited attention and communication bandwidth to process the increasing information flow. The goal of the study is to develop a context-aware filter to match the information load with particular needs and capacities. The functions include bandwidth-resolution trade-off and user context modeling. From the empirical lab studies, it is found that the resolution of images can be reduced in order of magnitude if the viewer knows that he/she is looking for particular features. The adaptive display queue is optimized with real-time operational conditions and user's inquiry history. Instead of measuring operator's behavior directly, ubiquitous computing models are developed to anticipate user's behavior from the operational environment data. A case study of the video stream monitoring for transit security is discussed in the paper. In addition, the author addresses the future direction of coherent human-machine vision systems. PMID:15687797

Cai, Yang

2004-12-01

40

Context-aware ranking in web search  

Microsoft Academic Search

The context of a search query often provides a search engine meaningful hints for answering the current query better. Previous studies on context-aware search were either focused on the development of context models or limited to a relatively small scale investigation under a controlled laboratory setting. Particularly, about context-aware ranking for Web search, the following two critical problems are largely

Biao Xiang; Daxin Jiang; Jian Pei; Xiaohui Sun; Enhong Chen; Hang Li

2010-01-01

41

Context-aware security and secure context-awareness in ubiquitous computing environments  

Microsoft Academic Search

Context-awareness emerges as an important element of future wireless systems. In particular, concepts like ambient intelligence and ubiquitous computing rely on context information in order to personalize services provided to their target users. However, security implications of employing context-awareness in computing systems are not well understood. Security challenges in context- aware systems include integrity, confidentiality and availability of context information,

Konrad Wrona; Laurent Gomez

42

Context Aware Systems, Methods and Trends in Smart Home Technology  

NASA Astrophysics Data System (ADS)

Context aware applications respond and adapt to changes in the computing environment. It is the concept of leveraging information about the end user to improve the quality of the interaction. New technologies in context-enriched services will use location, presence, social attributes, and other environmental information to anticipate an end user's immediate needs, offering more-sophisticated, situation-aware and usable functions. Smart homes connect all the devices and appliances in your home so they can communicate with each other and with you. Context-awareness can be applied to Smart Home technology. In this paper, we discuss the context-aware tools for development of Smart Home Systems.

Robles, Rosslin John; Kim, Tai-Hoon

43

Context-Aware Recommender Systems  

NASA Astrophysics Data System (ADS)

The importance of contextual information has been recognized by researchers and practitioners in many disciplines, including e-commerce personalization, information retrieval, ubiquitous and mobile computing, data mining, marketing, and management. While a substantial amount of research has already been performed in the area of recommender systems, most existing approaches focus on recommending the most relevant items to users without taking into account any additional contextual information, such as time, location, or the company of other people (e.g., for watching movies or dining out). In this chapter we argue that relevant contextual information does matter in recommender systems and that it is important to take this information into account when providing recommendations. We discuss the general notion of context and how it can be modeled in recommender systems. Furthermore, we introduce three different algorithmic paradigms - contextual prefiltering, post-filtering, and modeling - for incorporating contextual information into the recommendation process, discuss the possibilities of combining several contextaware recommendation techniques into a single unifying approach, and provide a case study of one such combined approach. Finally, we present additional capabilities for context-aware recommenders and discuss important and promising directions for future research.

Adomavicius, Gediminas; Tuzhilin, Alexander

44

Provide Context-Aware Advertisements with Interactivity  

Microsoft Academic Search

Interactivity and context-awareness are two salient features of mobile advertising, but their actual influences on advertising\\u000a effectiveness have not been studied. This study attempts to understand expectations and concerns of Chinese mobile users hold\\u000a for context aware advertising, and to investigate the influences of interactivity and context-awareness. A web-based survey\\u000a and an experiment were conducted for the two purposes respectively.

Qin Gao; Pei-luen Patrick Rau; Gavriel Salvendy

2007-01-01

45

Social networks and context-aware spam  

Microsoft Academic Search

Social networks are popular for online communities. This paper evaluates the risk of sophisticated context-aware spam that could result from information sharing on social networks and discusses potential mitigation strategies. Unlike normal spam, context-aware spam would likely have a high click-through rate due to exploitation of authentic social connections. Context-aware spam could lead to more insidious attacks that try to

Garrett Brown; Travis Howe; Micheal Ihbe; Atul Prakash; Kevin Borders

2008-01-01

46

Petri net-based context modeling for context-aware systems  

Microsoft Academic Search

The context-aware services require to efficiently perceive not only the user requirements but also the context of the environment\\u000a to provide customized services to the user. To efficiently develop the context-aware applications a systematic methodology\\u000a correctly specifying the relation among dynamically changing contexts is essential. Here the context model simplifying the\\u000a manipulation of complex contexts is a key accessor for

Seungwok Han; Hee Yong Youn

47

Perceptual Components for Context Aware Computing  

Microsoft Academic Search

In this paper we propose an ontology and a software architecture for observing and modeling context and situation. We are especially con- cerned with the perceptual components for context awareness. We propose a model in which a user's context is described by a set of roles and relations. Different configurations of roles and relations correspond to situations within the context.

James L. Crowley; Joëlle Coutaz; Gaeten Rey; Patrick Reignier

2002-01-01

48

A Dynamic Context-Aware Security Infrastructure for Distributed Healthcare Applications  

Microsoft Academic Search

Abstract The rapid worldwide,deployment,of the Internet and Web isthe,enabler ,of a ,new ,generation ,of e-healthcare applications, but the provision of a security architecture that can ensure ,the privacy and ,security of sensitive healthcare data is still an open,question. Current solutions tothis problem (mostly built on static RBAC models) are application-dependent ,and do not ,address the intricate security requirements ,of healthcare

Junzhe Hu; Alfred C. Weaver

49

A Context-Aware Personalized M-learning Application Based on M-learning Preferences  

Microsoft Academic Search

The purpose of this paper is to present the data analysis obtained from our interview study, which showed that participants had different individual mobile learning (hereafter, abbreviated as m-learning) preferences. The understanding of these preferences for different m-learning requirements can be used as a foundation for building successful personalized m-learning applications catered to learners' individual m-learning needs. Participants' dynamic m-learning

Jane Y-K Yau; Mike Joy

2010-01-01

50

Using Overlays to Support Context Awareness  

Microsoft Academic Search

A subset of context awareness is network context information, which requires distributed monitoring and information gathering. We propose the use of ap plication level overlays, utilising hierarchical cl ustering techniques, as the infrastructure for supporting an d providing network context information. Our proposition is supported by results from previous work in the deve lopment and deployment of an active service

Michael Fr; Glen MacLarty; Ian Wakeman

51

Support online social interaction with Context-Awareness  

Microsoft Academic Search

Social interaction is critical to knowledge building and sharing in online learning. This paper identifies knowledge, social and technical contexts as the three essential elements of the context space for online social interaction, and accordingly proposes a three-dimensional context-awareness (CA) model to support online social interaction, including Awareness to Knowledge Context, Awareness to Social Context, and Awareness to Technical Context.

Yanlin Zheng; Luyi Li; Hiroaki Ogata; Yoneo Yano

2007-01-01

52

Context-aware mutation: a modular, context aware mutation operator for genetic programming  

Microsoft Academic Search

This paper introduces a new type of mutation, Context- Aware Mutation, which is inspired by the recently intro- duced context-aware crossover. Context-Aware mutation operates by replacing existing sub-trees with modules from a previously constructed repository of possibly useful sub- trees. We describe an algorithmic way to produce the repository from an initial, exploratory run and test various GP set ups

Hammad Majeed; Conor Ryan

2007-01-01

53

Context-Aware Recommendation by Aggregating User Context  

Microsoft Academic Search

Abstract— Traditional recommendation,approaches do not consider the changes of user preferences according to context. As a result, these approaches consider the user’s overall preferences, although the user preferences on items varies according to his\\/her context. However, in our context-aware approach, we take into account not only user preferences, but also context information. Our approach can be easily adopted for,content-based,and,collaborative filtering

Dongmin Shin; Jae-won Lee; Jongheum Yeon; Sang-goo Lee

2009-01-01

54

CAMPS: A Middleware for Providing Context-Aware Services for Smart Space  

Microsoft Academic Search

Context-awareness enhances intelligent behaviors in perva- sive computing environments, although it is still a great challenge to en- able context-awareness due to lack of effective infrastructure to support context-aware applications. In this paper, we present an agent-based mid- dleware called CAMPS for providing context-aware services for Smart Space in order to afford effective supports for context acquisition, rep- resentation, interpretation,

Weijun Qin; Yue Suo; Yuanchun Shi

2006-01-01

55

Context-aware telephony: privacy preferences and sharing patterns  

Microsoft Academic Search

The proliferation of cell phones has led to an ever increasing number of inappropriate interruptions. Context-aware telephony applications, in which callers are provided with context information about the receivers, has been proposed as a solution for this problem. This approach, however, raises many privacy issues that may render it infeasible. In this paper, we report on an in-situ study of

Ashraf Khalil; Kay Connelly

2006-01-01

56

Context Aware Differentiated Services Development with Configurable Business Processes  

Microsoft Academic Search

In order to make business service more flexible and reusable, it is desirable to provide users or applications the same service but with different service quality, different interaction paths, or with different outcomes. We call this design principle as Service Differentiation. This paper describes a fully functional mechanism where variability is externalized as usage context and context aware policies so

Aries TaoTao; Jian Yang

2007-01-01

57

Practical Context Awareness for GSM Cell Phones  

Microsoft Academic Search

The ability to provide context aware behaviour on a cell phone such as whether a user is walking or driving has previously only been possible via the use of additional hardware sensors such as an accelerometer. In this paper we show that by using GSM data such as signal strength fluctuation and changes to the monitored neighbouring cells it is

Ian Anderson; Henk L. Muller

2006-01-01

58

The Telecom Industry and Context Awareness  

Microsoft Academic Search

The expenditure telecom operators made to prepare themselves for the 3G (and beyond) environment are far from being re-earned and recent research has showed that mobile customers are not willing to spend more money on mobile communication. The telecom industry needs to search for new sources of revenue. Opportunities can be found in the area of context awareness. As location

Jordi Docter; Carlo Alberto Licciardi; Marco Marchetti

2007-01-01

59

Network aware distributed applications  

SciTech Connect

Most distributed applications today manage to utilize only a small percentage of the needed and available network bandwidth. Often application developers are not aware of the potential bandwidth of the network, and therefore do not know what to expect. Even when application developers are aware of the specifications of the machines and network links, they have few resources that can help determine why the expected performance was not achieved. What is needed is a ubiquitous and easy-to-use service that provides reliable, accurate, secure, and timely estimates of dynamic network properties. This service will help advise applications on how to make use of the network's increasing bandwidth and capabilities for traffic shaping and engineering. When fully implemented, this service will make building currently unrealizable levels of network awareness into distributed applications a relatively mundane task. For example, a remote data visualization application could choose between sending a wireframe, a pre-rendered image, or a 3-D representation, based on forecasts of CPU availability and power, compression options, and available bandwidth. The same service will provide on-demand performance information so that applications can compare predicted with actual results, and allow detailed queries about the end-to-end path for application and network tuning and debugging.

Agarwal, Deborah; Tierney, Brian L.; Gunter, Dan; Lee, Jason; Johnston, William

2001-02-04

60

Context-Aware Computing: A Guide for the Pervasive Computing Community  

Microsoft Academic Search

There is a high interest on context-aware computing expressed by the pervasive computing community, which considers context as a key to design more adaptive applications. Due to this interest, a huge amount of contributions have been made in the field as we can notice from the increasing amount of publications on context and context-aware computing. However, the user interested in

G. K. Mostefaoui; J. Pasquier-Rocha; P. Brezillon

2004-01-01

61

Context Awareness in a Handheld Exercise Agent  

PubMed Central

Work towards the development of a handheld health counseling agent designed to promote physical activity is described. Previous work on automated health counselors is discussed, along with the affordances of mobility and context awareness for health behavior interventions. We present a general-purpose software architecture for the rapid design and deployment of mobile health counseling agents. We also describe the results of an initial field trial in which such a mobile agent plays the role of an exercise coach designed to motivate users to walk more. Results were mixed. We found that the context awareness mechanism that was implemented for detecting walking led to greater user-agent social bonding, but less walking in study participants.

Bickmore, Timothy W.; Mauer, Daniel; Brown, Thomas

2009-01-01

62

Context-aware sensing of physiological signals.  

PubMed

Recent advancement in microsensor technology permits miniaturization of conventional physiological sensors. Combined with low-power, energy-aware embedded systems and low power wireless interfaces, these sensors now enable patient monitoring in home and workplace environments in addition to the clinic. Low energy operation is critical for meeting typical long operating lifetime requirements. Some of these physiological sensors, such as electrocardiographs (ECG), introduce large energy demand because of the need for high sampling rate and resolution, and also introduce limitations due to reduced user wearability. In this paper, we show how context-aware sensing can provide the required monitoring capability while eliminating the need for energy-intensive continuous ECG signal acquisition. We have implemented a wearable system based on standard widely-used handheld computing hardware components. This system relies on a new software architecture and an embedded inference engine developed for these standard platforms. The performance of the system is evaluated using experimental data sets acquired for subjects wearing this system during an exercise sequence. This same approach can be used in context-aware monitoring of diverse physiological signals in a patient's daily life. PMID:18003197

Wu, Winston H; Batalin, Maxim A; Au, Lawrence K; Bui, Alex A T; Kaiser, William J

2007-01-01

63

Using Context-Awareness to Foster Active Lifestyles  

Microsoft Academic Search

\\u000a This paper describes a context-aware mobile application which aims at adaptively motivating its users to assume active lifestyles.\\u000a The application is built on a model which combines ‘motion patterns’ with ‘activity profiles’, in order to evaluate the user’s\\u000a real level of activity and decide which actions to take to give advice or provide feedback. In particular, a ‘move-to-uncover’\\u000a wallpaper puzzle

Ana M. Bernardos; Eva Madrazo; Henar Martín; José R. Casar

64

The AWARE architecture: supporting context-mediated social awareness in mobile cooperation  

Microsoft Academic Search

Maintaining social awareness of the working context of fellow co-workers is crucial to successful cooperation. For mobile, non co-located workers, however, this social awareness is hard to maintain. In this paper we present the concept of Context-Mediated Social Awareness to denote how context-aware computing can be used to facilitate social awareness. We illustrate the concept in a case study of

Jakob E. Bardram; Thomas Riisgaard Hansen

2004-01-01

65

Intelligibility and Accountability: Human Considerations in Context-Aware Systems  

Microsoft Academic Search

This essay considers the problem of defining the context that context-aware systems should pay attention to from a human perspective. In particular, we ar- gue that there are human aspects of context that cannot be sensed or even in- ferred by technological means, so context-aware systems cannot be designed simply to act on our behalf. Rather, they will have to

Victoria Bellotti; Keith Edwards

2001-01-01

66

Sensible appliances: applying context-awareness to appliance design  

Microsoft Academic Search

Sensible appliance is an appliance which understands user's situation and takes appropriate actions to provide a high-quality user experience. A sensible appliance should be able to collect and infer relevant contexts to understand the user's situation. It is important for designers to understand context- awareness and its impact on design. In this paper we introduce what context and context-awareness are

Sung Woo Kim; Sang Hyun Park; Jung Bong Lee; Young Kyu Jin; Hyun-mi Park; Amy Chung; Seung Eok Choi; Woo Sik Choi

2004-01-01

67

Is Context-Aware Computing Taking Control away from the User? Three Levels of Interactivity Examined  

Microsoft Academic Search

Context-aware computing promises a smooth interaction be- tween humans and technology but few studies have been conducted with regards to how interactive an application should be. After dening three levels of interactivity between a mobile computing device and its user: personalization, passive context-awareness and active context-awareness, we test which approach will limit users' perceived sense of control. We also investigate

Louise Barkhuus; Anind K. Dey

2003-01-01

68

Solving LR Conflicts Through Context Aware Scanning  

NASA Astrophysics Data System (ADS)

This paper presents a new algorithm to compute the exact list of tokens expected by any LR syntax analyzer at any point of the scanning process. The lexer can, at any time, compute the exact list of valid tokens to return only tokens in this set. In the case than more than one matching token is in the valid set, the lexer can resort to a nested LR parser to disambiguate. Allowing nested LR parsing requires some slight modifications when building the LR parsing tables. We also show how LR parsers can parse conflictive and inherently ambiguous languages using a combination of nested parsing and context aware scanning. These expanded lexical analyzers can be generated from high level specifications.

Leon, C. Rodriguez; Forte, L. Garcia

2011-09-01

69

Auditory Context Awareness via Wearable Computing  

Microsoft Academic Search

We describe a system for obtaining environmental context through audio for applications and user interfaces. WE are interested in identifying specific auditory events such as speakers, cars, and shutting doors, and auditory scenes such as the office, supermarket, or busy street. Our goal is to construct a system that is real-time and robust to a variety of real-world environments. The

Alex Pentland; Brian Clarkson; Nitin Sawhney

1998-01-01

70

Introduction to This Special Issue on Context-Aware Computing.  

ERIC Educational Resources Information Center

Discusses pervasive, or ubiquitous, computing; explains the notion of context; and defines context-aware computing as the key to disperse and enmesh computation into our lives. Considers context awareness in human-computer interaction and describes the broad topic areas of the essays included in this special issue. (LRW)

Moran, Thomas P.; Dourish, Paul

2001-01-01

71

Information Dissemination between Mobile Nodes for Collaborative Context Awareness  

Microsoft Academic Search

In our everyday life, we frequently experience cases where persons group together. In those cases, context-aware systems capture and process identical context. Therefore, the need to collaboratively address Context Awareness (CA) emerges. In the considered setting, ad hoc networking between mobile nodes enables the exchange of information, thus, CA is facilitated. The synergy between mobile nodes materializes the Collaborative CA

Christos Anagnostopoulos; Stathes Hadjiefthymiades; Evangelos Zervas

2011-01-01

72

AI Techniques in a Context-Aware Ubiquitous Environment  

NASA Astrophysics Data System (ADS)

Nowadays, the mobile computing paradigm and the widespread diffusion of mobile devices are quickly changing and replacing many common assumptions about software architectures and interaction/communication models. The environment, in particular, or more generally, the so-called user context is claiming a central role in everyday’s use of cellular phones, PDAs, etc. This is due to the huge amount of data “suggested” by the surrounding environment that can be helpful in many common tasks. For instance, the current context can help a search engine to refine the set of results in a useful way, providing the user with a more suitable and exploitable information. Moreover, we can take full advantage of this new data source by “pushing” active contents towards mobile devices, empowering the latter with new features (e.g., applications) that can allow the user to fruitfully interact with the current context. Following this vision, mobile devices become dynamic self-adapting tools, according to the user needs and the possibilities offered by the environment. The present work proposes MoBe: an approach for providing a basic infrastructure for pervasive context-aware applications on mobile devices, in which AI techniques (namely a principled combination of rule-based systems, Bayesian networks and ontologies) are applied to context inference. The aim is to devise a general inferential framework to make easier the development of context-aware applications by integrating the information coming from physical and logical sensors (e.g., position, agenda) and reasoning about this information in order to infer new and more abstract contexts.

Coppola, Paolo; Mea, Vincenzo Della; di Gaspero, Luca; Lomuscio, Raffaella; Mischis, Danny; Mizzaro, Stefano; Nazzi, Elena; Scagnetto, Ivan; Vassena, Luca

73

Discovering Causal Dependencies in Mobile Context-Aware Recommenders  

Microsoft Academic Search

Mobile context-aware recommender systems face unique challenges in acquiring context. Resource limitations make minimizing context acquisition a practical need, while the uncertainty inherent to the mobile environment makes miss- ing context values a major concern. This paper introduces a scalable mechanism based on Bayesian network learning in a tiered context model to overcome both of these challenges. Extensive experiments on

Ghim-eng Yap; Ah-hwee Tan; Hwee-Hwa Pang

2006-01-01

74

Context-aware content filtering & presentation for pervasive & mobile information systems  

Microsoft Academic Search

What constitutes relevant information to an individual may vary widely under different contexts. However, previous work on pervasive information systems has mostly focused on context-aware delivery of application-specific information. Such systems are only able to operate within narrow application domains and cannot be generalized to handle other heterogeneous types of information. To fill this gap, we propose a context-aware system

Kaijian Xu; Manli Zhu; Daqing Zhang; Tao Gu

2008-01-01

75

Context-Awareness Enabling New Business Models in Smart Spaces  

Microsoft Academic Search

\\u000a This paper describes how emerging context-awareness technologies will act as a driving force for introduction of intelligently\\u000a personalized services in smart spaces. The according context-awareness framework is taken from the results of the EU FP 7\\u000a project “C-CAST”. Major novelties include a highly scalable context management architecture as well as a context prediction\\u000a methodology. The paper considers business models and

Boris Moltchanov; Christian Mannweiler; Jose Simoes

2010-01-01

76

Saturday Night or Fever? Context Aware Music Playlists  

Microsoft Academic Search

Context awareness provides opportunities for enhanced user experience, interaction and customisation of electronic devices, particularly those which hold large data sets of information which may often only be relevant to a user in certain scenarios. In this work, we examine how context awareness can be applied to the automatic generation of music playlists on mobile music devices, such as MP3

Stuart Cunningham; Stephen Caulder; Vic Grout

77

A data fusion framework for context-aware mobile services  

Microsoft Academic Search

The analysis of some context-aware services, in which the central element comes to be the user and its mobile device plunged in a rich and heterogeneous sensing environment, has driven us to face the design of context-aware systems as a multisensor data fusion process. In this paper we propose a fusion framework that describes the information flows and identifies the

Ana M. Bernardos; Paula Tarrío; José R. Casar

2008-01-01

78

Context Aware Transit Navigator, Transit IDEA Project No. 65.  

National Technical Information Service (NTIS)

The objective of this project was to create a real-time, context-aware transit navigation system. The system integrates the route-planning and real-time tracking functionality provided by current systems into a single, real-time and context-aware applicat...

J. Eriksson

2013-01-01

79

CAMPUS: context aware mobile platform for uniformed security  

Microsoft Academic Search

The Context Aware Mobile Platform for Uniformed Security (CAMPUS) system was developed with the aim of using ambient intelligence and mobile communications to information sources as an aid to field security and law enforcement personnel. The system is centered on a context aware information distribution framework and a client operating on a head mounted display. The system allows field service

Hossein Rahnama; Sina Jamshidi; Stephen Johns; Alan Shepard

2011-01-01

80

Context-Aware Handover Based on Active Network Technology  

Microsoft Academic Search

Context-aware computing can play a major role to improve the services of mobile networking systems. In this paper, we focus on optimizing handover decisions based not only on the signal quality, but also on the knowledge about the context of mobile devices and networks. Since context information and context processing evolves fast, we propose a flexi ble, integrated approach for

Qing Wei; Károly Farkas; Paulo Mendes; Christian Prehofer; Bernhard Plattner; Nima Nafisi

2003-01-01

81

A fuzzy service adaptation engine for context-aware mobile computing middleware  

Microsoft Academic Search

Purpose - Context-aware mobile computing extends the horizons of the conventional computing model to a ubiquitous computing environment that serves users at anytime, anywhere. To achieve this, mobile applications need to adapt their behaviors to the changing context. The purpose of this paper is to present a generalized adaptive middleware infrastructure for context-aware computing. Design\\/methodology\\/approach - Owing to the vague

Ronnie Cheung; Gang Yao; Jiannong Cao; Alvin T. S. Chan

2008-01-01

82

E-graffiti: evaluating real-world use of a context-aware system  

Microsoft Academic Search

Much of the previous research in context-aware computing has sought to find a workable definition of context and to develop systems that could detect and interpret contextual characteristics of an user environment. However, less time has been spent studying the usability of these types of systems. This was the goal of our project. E-graffiti is a context-aware application that detects

Jenna Burrell; Geri K Gay

2002-01-01

83

Designing viable business models for context-aware mobile services  

Microsoft Academic Search

Technologies of 3G and beyond open up new opportunities to develop and commercialize context-aware services that utilize information like user location and social context. Although initial expectations were high, the adoption and diffusion of context-aware services have thus far been limited. Existing literature points to failing business models to explain part of the disappointing uptake. However, most authors focus on

Mark De Reuver; Timber Haaker

2009-01-01

84

Contextcapture: exploring the usage of context-based awareness cues in informal information sharing  

Microsoft Academic Search

In this paper, we investigate the usage of context-based awareness cues in informal information sharing, especially in social networking services. We present an experimental mobile application, which allows users to add different descriptions of context information to their Facebook status updates. The meaningfulness and the usage of different context descriptions were evaluated in a two-week user trial. The results show

Ville Antila; Jussi Polet; Ari-Heikki Sarjanoja; Petri Saarinen; Minna Isomursu

2011-01-01

85

Context Modeling for Urban Mobile Applications  

Microsoft Academic Search

Urban settings are host of diverse networking technologies, from 3G and wired broadband to Wi-Fi, WiMAX, Bluetooth and, more recently, sensor networks. Potentially, these co-existing networks can provide rich inputs to mobile applications that are context aware. To date, the vast majority of context-aware mobile applications are specialized, e.g. healthcare and tourism, and they lack generality and adaptability. It is

Romain Williot; Dan Grigoras

2008-01-01

86

Bluetooth-Assisted Context-Awareness in Educational Data Networks  

ERIC Educational Resources Information Center

|In this paper, we propose an auxiliary "location network", to support user-independent context-awareness in educational data networks; for example, to help visitors in a museum. We assume that, in such scenarios, there exist "service servers" that need to be aware of user location in real-time. Specifically, we propose the implementation of a…

Gonzalez-Castano, F. J.; Garcia-Reinoso, J.; Gil-Castineira, F.; Costa-Montenegro, E.; Pousada-Carballo, J. M.

2005-01-01

87

Context awareness and sensitivity in SEA implementation  

SciTech Connect

The Impact Assessment research community repeatedly asserts that the implementation of Strategic Environmental Assessment (SEA) should take the issue of context into consideration. The primary aim of this paper then is to attempt to give substance to the concept of 'context' in relation to the implementation of SEA. The second aim is to discuss the relevance of context consciousness and sensitivity in relation to one of the main aims given to SEA implementation i.e. to contribute to the 'integration' of environmental perspectives in planning processes. Context must be defined in relation to a certain question. In this paper the question in focus is the assumption that SEA implementation will contribute to integration of environmental issues in planning processes. Research results relating to the use of environmental tools, like for example SEA, and experiences of integration efforts, strongly indicate that the use of a single tool like SEA is not enough to achieve this integration. The current 'context free' normative and procedural assumptions concerning the aim of SEA implementation and 'best practice' in term of SEA can be criticised on the same grounds as normative and procedural planning theories, as being context free. The assumptions behind the current formulations of the aim and best practice of SEA need to be revisited. A firm empirical and theoretical knowledge and discussion is needed, especially in relation to the issue of context and integration. This paper provides a starting point in this direction.

Hilding-Rydevik, Tuija [EIA Centre, Department of Urban and Rural Development, Swedish University of Agricultural Sciences, Box 7012, SE-750 07 Uppsala (Sweden)], E-mail: tuija.hilding-rydevik@sol.slu.se; Bjarnadottir, Holmfridur [SKI - Swedish Nuclear Power Inspectorate, SE-106 58 Stockholm (Sweden)], E-mail: holmfridur.bjarnadottir@ski.se

2007-10-15

88

Trust-Based and Context-Aware Authentication in a Software Architecture for Context and Proximity-Aware Services  

NASA Astrophysics Data System (ADS)

We describe an existing software architecture for context and proximity aware services that enables trust-based and context-aware authentication. A service is proximity aware when it automatically detects the presence of entities in its proximity. Authentication is context-aware when it uses contextual information to discern among different identities and to evaluate to which extent they are authentic. The software architecture that we describe here is functioning in our Institute: It manages a sensor network to detect the presence and location of users and their devices. A context manager is responsible to merge the different sources of contextual information, to solve potential contradictions, and to determine the level of authentication of the identity of the person approaching one of the services offered in the coffee-break corners of our Institute. In our solution for context-aware authentication, sensors are managed as if they were recommenders having subjective belief, disbelief, and uncertainty (i.e., trust) on the position and identity of users. A sensor’s subjective trust depends on what it has been sensing in the environment. We discuss the results of an array of simulations that we conducted to validate our concept of trust-based and context-aware authentication. We use Subjective Logic to manage trust.

Lenzini, Gabriele

89

An infrastructure for context-awareness based on first order logic  

Microsoft Academic Search

Context simplifies and enriches human-human interaction. However, enhancing human-computer interaction through the use of context remains a difficult task. Applications in pervasive and mobile environments need to be context-aware so that they can adapt themselves to rapidly changing situations. One of the problems is that there is no common, reusable model for context used by these environments. In this paper,

Anand Ranganathan; Roy H. Campbell

2003-01-01

90

Visual Context Awareness via Wearable Computing  

Microsoft Academic Search

Small body-mounted video cameras enable a different style of computing interface. As processing power increases, a computer can spend more time observing its user and modeling his or her context to provide serendipitous information, manage interruptions and tasks, and predict future needs without being directly commanded by the user. This paper introduces a wearable assistant, driven by computer vision, for

Alex Pentland; Bernt Schiele; Thad Starner

1998-01-01

91

Supporting Context-Aware Media Recommendations for Smart Phones  

Microsoft Academic Search

A context-aware media recommendation platform uses an NtimesM-dimensional model and a hybrid processing approach to support media recommendation, adaptation, and delivery for smart phones. To provide media recommendations for smart phones based on all three context categories, we present a generic and flexible NtimesM-dimensional (N2M) recommendation model. The model considers context information ranging from user preference and situation to device

Zhiwen Yu; Xingshe Zhou; Daqing Zhang; Chung-yau Chin; Xiaohang Wang; Ji Men

2006-01-01

92

Creating dynamic groups using context-awareness  

Microsoft Academic Search

This article presents the conceptual communication model of dynamic groups, that dynamically utilizes three traditional communication metaphors through the use of context-based information. Dynamic groups makes creation, management and usage of groups easy. It enables social network structures to be maintained in both virtual and face-to-face settings as well as in the combination thereof. This article defines the dynamic management

Josef Hallberg; Mia Backlund Norberg; Johan Kristiansson; Kåre Synnes; Chris D. Nugent

2007-01-01

93

A Web 2.0 Platform to Enable Context-Aware Mobile Mash-Ups  

Microsoft Academic Search

Abstract. Context-aware systems,allow users to access services and multimedia,data according,to their current context (location, identity, preferences). Web 2.0 fosters user contribution and presents the web,as an application programming,platform,where third parties can create new,applications (mash-ups) mixing the functionality offered by others. We deem that applying Web 2.0 principles to the development,of middleware,support for context-aware systems could result into a wider adoption

Diego López De Ipiña; Juan Ignacio Vázquez; Joseba Abaitua

2007-01-01

94

The design and applications of a context service  

Microsoft Academic Search

Context awareness enables applications to adapt themselves to their computing environment in order to better suit the needs of the user and the tasks. This paper describes a general middleware infrastructure for context collection and dissemination, realized as a Context Service. By way of two example applications, this paper also illustrates how context information provided by our context service can

Hui Lei; Daby M. Sow; John S. Davis II; Guruduth Banavar; Maria R. Ebling

2002-01-01

95

A smart context-aware mobile monitoring system for heart patients  

Microsoft Academic Search

Patient context awareness is an important concept for application services in mHealth environments. In this paper we present a multisensors system that uses a rule-based DSS able to enhance the accuracy of potentially dangerous Heart Rate variability by taking into account patient context information. We have designed and implemented an intelligent system that allows receiving data from several sensors and

Giovanna Sannino; Giuseppe De Pietro

2011-01-01

96

A Middleware for Context-Aware Agents in Ubiquitous Computing Environments  

Microsoft Academic Search

Ubiquitous Computing advocates the construction of massively dis- tributed systems that help transform physical spaces into computationally active and intelligent environments. The design of systems and applications in these environments needs to take account of heterogeneous devices, mobile users and rapidly changing contexts. Most importantly, agents in ubiquitous and mobile environments need to be context-aware so that they can adapt

Anand Ranganathan; Roy H. Campbell

2003-01-01

97

Context-Aware Scientific Workflow Systems using KEPLER  

SciTech Connect

Data-intensive scientific workflows are often modeled using a dataflow-oriented model. The simplicity of a dataflow model facilitates intuitive workflow design, analysis, and optimization. However, some amount of control-flow modeling is often necessary for engineering fault-tolerant, robust, and adaptive workflows. Modeling the control-flow using inherent dataflow constructs will quickly end up with a workflow that is hard to comprehend, reuse, and maintain. In this paper, we propose a context-aware architecture for scientific workflows. By incorporating contexts within a data-flow oriented scientific workflow system, we enable the development of context-aware scientific workflows without the need to use numerous low-level control-flow actors. This results in a workflow that is aware of its environment during execution with minimal user input and responds intelligently based on such awareness at runtime. A further advantage of our approach is that the defined contexts can be reused and shared across other workflows. We demonstrate our approach with two prototype implementation of context-aware actors in KEPLER.

Ngu, Anne H.; Jamnagarwala, Arwa; Chin, George; Sivaramakrishnan, Chandrika; Critchlow, Terence J.

2010-04-01

98

Context-Aware Online Commercial Intention Detection  

NASA Astrophysics Data System (ADS)

With more and more commercial activities moving onto the Internet, people tend to purchase what they need through Internet or conduct some online research before the actual transactions happen. For many Web users, their online commercial activities start from submitting a search query to search engines. Just like the common Web search queries, the queries with commercial intention are usually very short. Recognizing the queries with commercial intention against the common queries will help search engines provide proper search results and advertisements, help Web users obtain the right information they desire and help the advertisers benefit from the potential transactions. However, the intentions behind a query vary a lot for users with different background and interest. The intentions can even be different for the same user, when the query is issued in different contexts. In this paper, we present a new algorithm framework based on skip-chain conditional random field (SCCRF) for automatically classifying Web queries according to context-based online commercial intention. We analyze our algorithm performance both theoretically and empirically. Extensive experiments on several real search engine log datasets show that our algorithm can improve more than 10% on F1 score than previous algorithms on commercial intention detection.

Hu, Derek Hao; Shen, Dou; Sun, Jian-Tao; Yang, Qiang; Chen, Zheng

99

Context-aware fun and games with Bluetooth  

Microsoft Academic Search

Bluetooth-enabled devices are everywhere and in everyday use by a large number of mobile phone users. Harnessing this communication\\u000a channel for a context-aware system has proved to be a useful step forward in providing simple games, fun events and targeted\\u000a advertising based on the awareness of the user’s location. As part of a wider project the authors have produced a

Andy Sloane; Chris Dennett

100

Towards a Common Context Model for Virtual Community Applications  

Microsoft Academic Search

Instrumentation of home appliances and devices with sensors and actua- tors enables the creation of smart, context-aware environments which can intelligently support users in a variety of tasks, including tasks that support independent living of the elderly. This paper describes how the complexity associated with designing and implementing context-aware applications can be reduced through both context reuse and programming methods

J. Indulska; K. Henricksen; T. McFadden; P. Mascaro

2004-01-01

101

Context-Aware Mashups for Mobile Devices  

Microsoft Academic Search

With the Web 2.0 trend and its participation of end-users more and more data and information services are online accessible,\\u000a such as web sites, Wikis, or web services. So-called mashups—web applications that integrate data from more than one source\\u000a into an integrated service—can be easily realized using scripting languages. Also, mobile devices are increasingly powerful,\\u000a have ubiquitous access to the

Andreas Brodt; Daniela Nicklas; Sailesh Sathish; Bernhard Mitschang

2008-01-01

102

Personalized Context-aware Access to Digital Cultural Heritage  

Microsoft Academic Search

This paper presents a semantic recommender method and a system for a personalized access to digital cultural heritage through context-aware user pro- filing. Given annotation knowledge-bases, explicit backgr ound knowledge in the form of ontologies, a user model capturing the user's behavi or and context, the system produces recommendations. Ontology-based user profiling can be used to reduce cold-start, sparsity and

Tuukka Ruotsalo; Eetu Makela; Tomi Kauppinen; Eero Hyvonen; Krister Haav; Ville Rantala; Matias Frosterus; Nima Dokoohaki; Mihhail Matskin

103

A*Based Task Assignment Algorithm for Context-Aware Mobile Patient Monitoring Systems  

Microsoft Academic Search

Mobile Patient Monitoring System (MPMS) is positioned to provide high quality healthcare services in the near future. The gap between its application demands and resource supplies, however, still remains and may hinder this process. Dynamic context-aware adaptation mechanisms are required in order to meet the stringent requirements on such mission critical applications. The fundamental model underlying an MPMS includes a

Hailiang Mei; Bert-jan Van Beijnum; Pravin Pawar; Ing Widya; Hermie Hermens

2009-01-01

104

The Design of a Context-Aware Home Media Space for Balancing Privacy and Awareness  

Microsoft Academic Search

Traditional techniques for balancing privacy and awareness in video media spaces, like blur filtration, have been proven to be ineffective for com- promising home situations involving a media space. As such, this paper pre- sents the rationale and prototype design of a context-aware home media space (HMS)—defined as an always-on video media space used within a home set- ting—that focuses

Carman Neustaedter; Saul Greenberg

2003-01-01

105

Wearable Sensor Badge and Sensor Jacket for Context Awareness  

Microsoft Academic Search

The addition of sensors to wearable computers allows them to adapt their functions to more suit the activities and situation of their wearers. Here a wearable sensor badge is described constructed from (hard) electronic components, which can sense perambulatory activities for context-awareness. A wearable sensor jacket is described that uses advanced knitting techniques to form (soft) fabric stretch sensors positioned

Jonny Farringdon; Andrew J. Moore; Nancy Tilbury; James Church; Pieter D. Biemond

1999-01-01

106

A Context Awareness System for Online Learning: Design Based Research  

ERIC Educational Resources Information Center

A design based research strategy examining the impressions and behavior of members of courses taught entirely online is used for refining a context-aware activity notification system (CANS). The findings show that CANS must address substantial variety in courses and members while also fitting with multitasking between online and real world…

Laffey, James; Amelung, Chris; Goggins, Sean

2009-01-01

107

Context-aware social media recommendation based on potential group  

Microsoft Academic Search

Data recommendation as a kind of active mode is more meaningful and important than traditional passive search mode in social media environment. The importance of contextual information has also been recognized by researchers and practitioners in many disciplines, including recommendation system, e-commerce, information retrieval, mobile computing and so on. In this paper, we propose a novel approach for context-aware social

Cheng Zeng; Dawen Jia; Jian Wang; Liang Hong; Wenhui Nie; Zhihao Li; Jilei Tian

2012-01-01

108

Context-aware handover using active network technology  

Microsoft Academic Search

Context-aware computing can play a major role to improve the services of mobile networking systems. In this paper, we focus on optimizing handover decisions in heterogeneous environments, where the user has a choice among different mobile networks and access points. In our approach, the decision is not only based on the signal quality, but also on the knowledge about the

Qing Wei; Károly Farkas; Christian Prehofer; Paulo Mendes; Bernhard Plattner

2006-01-01

109

Provisioning Context-Aware Advertisements to Wireless Mobile Users  

Microsoft Academic Search

Mobile advertising, which is an area of mobile commerce, is a form of advertising that targets users of handheld wireless devices such as mobile phones and personal digital assistants (PDAs). Given the constraints of such devices, mobile advertisements should be context-aware in the sense that the behaviour of such value-added services is mostly driven by information based on user's location,

Qusay M. Mahmoud

2006-01-01

110

A Context Awareness System for Online Learning: Design Based Research  

ERIC Educational Resources Information Center

|A design based research strategy examining the impressions and behavior of members of courses taught entirely online is used for refining a context-aware activity notification system (CANS). The findings show that CANS must address substantial variety in courses and members while also fitting with multitasking between online and real world…

Laffey, James; Amelung, Chris; Goggins, Sean

2009-01-01

111

Pragmatic Awareness in ESL and EFL Contexts: Contrast and Development  

ERIC Educational Resources Information Center

|The study reported on in this article set out to replicate and extend Bardovi-Harlig and Dornyei's (1998) investigation of pragmatic awareness by addressing two research questions: (a) Do learners in English as a foreign language (EFL) and English as a second language (ESL) contexts display differences in their recognition and rating of pragmatic…

Schauer, Gila A.

2006-01-01

112

Context-aware prompting from your smart phone  

Microsoft Academic Search

Individuals with cognitive impairment have difficulty successfully performing activities of daily living, which can lead to decreased independence. In order to help these individuals age in place and decrease caregiver burden, technologies for assistive living have gained popularity over the last decade. This demo illustrates the implementation of a context-aware prompting system augmented by a smart phone to determine prompt

Barnan Das; Brian L. Thomas; Adriana M. Seelye; Diane J. Cook; Larry B. Holder; Maureen Schmitter-Edgecombe

2012-01-01

113

A context-aware middleware for ambient intelligence  

Microsoft Academic Search

By the acronym MOCOCO we refer to our view of ambient intelligence (AmI), pointing out three main characteristics: Mobility, Contextualization and Collaboration. The ambient intelligence is a challenging research area focusing on ubiquitous computing, profiling practices, context awareness, and human-centric computing and interaction design. We are concretizing our approach in a platform called IMERA (French acronym for Computer Augmented Environment

Tao Xu; Bertrand David; René Chalon; Yun Zhou

2011-01-01

114

Context aware vertical handover decision making in heterogeneous wireless networks  

Microsoft Academic Search

Provisioning continuous services while moving through heterogeneous wireless networks is a main issue in the fourth generation wireless Networks. An efficient vertical handover decision making algorithm that takes into account services' requirements, considers users' preferences and guaranties seamless handover over heterogeneous technologies is required. In this paper, we propose an intelligent context-aware solution that considers both users and services requirements.

Mariem Zekri; Badii Jouaber; Djamal Zeghlache

2010-01-01

115

A Web 2.0 Platform to Enable Context-Aware Mobile Mash-ups  

Microsoft Academic Search

Context-aware systems allow users to access services and multimedia data according to their current context (location, identity, preferences). Web 2.0 fosters user contribution and presents the web as an application programming platform where third parties can create new applications (mash-ups) mixing the functionality offered by others. We deem that applying Web 2.0 principles to the development of middleware support for

Diego López-de-Ipiña; Juan Ignacio Vazquez; Joseba Abaitua

116

Privacy in Georeferenced Context-Aware Services: A Survey  

NASA Astrophysics Data System (ADS)

Location based services (LBS) are a specific instance of a broader class of Internet services that are predicted to become popular in a near future: context-aware services. The privacy concerns that LBS have raised are likely to become even more serious when several context data, other than location and time, are sent to service providers as part of an Internet request. This paper provides a classification and a brief survey of the privacy preservation techniques that have been proposed for this type of services. After identifying the benefits and shortcomings of each class of techniques, the paper proposes a combined approach to achieve a more comprehensive solution for privacy preservation in georeferenced context-aware services.

Riboni, Daniele; Pareschi, Linda; Bettini, Claudio

117

Advanced medical video services through context-aware medical networks.  

PubMed

The aim of this paper is to present a framework for advanced medical video delivery services, through network and patient-state awareness. Under this scope a context-aware medical networking platform is described. The developed platform enables proper medical video data coding and transmission according to both a) network availability and/or quality and b) patient status, optimizing thus network performance and telediagnosis. An evaluation platform has been developed based on scalable H.264 coding of medical videos. Corresponding results of video transmission over a WiMax network have proved the effectiveness and efficiency of the platform providing proper video content delivery. PMID:18002643

Doukas, Charalampos N; Maglogiannis, Ilias; Pliakas, Thomas

2007-01-01

118

Towards a Multidisciplinary Model of Context to Support Context-Aware Computing  

Microsoft Academic Search

Capturing, defining, and modeling the essence of context are challenging, com- pelling, and prominent issues for interdisciplinary research and discussion. The roots of its emergence lie in the inconsistencies and ambivalent definitions across and within different research specializations (e.g., philosophy, psychology, pragmatics, linguistics, computer science, and artificial intelligence). Within the area of computer science, the advent of mobile context-aware computing

Nicholas A. Bradley; Mark D. Dunlop

2005-01-01

119

A Stochastic Approach for Creating Context-aware Services based on Context Histories in Smart Home  

Microsoft Academic Search

In this paper, we present a context-aware service platform called Synapse and its simple smart home test bed. By exploiting the recorded histories of contexts and services, Synapse can learn different users' habits. Then Synapse can predict the most relevant services that users will use in the current situation based on their habits, and provide services in Active Mode and

Hua Si; Yoshihiro Kawahara; Hiroyuki Morikawa; Tomonori Aoyama

120

Context-Aware Computing Based Adaptable Heart Diseases Diagnosis Algorithm  

Microsoft Academic Search

\\u000a It is well known that the electrocardiogram (ECG) signal has crucial information to detect heart disease. However, development\\u000a of automated heart disease diagnosis system is known as nontrivial problem since the ECG signal is different from patient\\u000a to patient, measured time and environmental conditions. To overcome this problem, context-aware computing based adaptable\\u000a heart disease diagnosis algorithm is proposed. Before diagnosis

Tae-seon Kim; Hyun-Dong Kim

2005-01-01

121

SenSay: A Context-Aware Mobile Phone  

Microsoft Academic Search

SenSay is a context-aware mobile phone that adapts to dynamically changing environmental and physiological states. In addition to manipulating ringer volume, vibration, and phone alerts, SenSay can provide remote callers with the ability to communicate the urgency of their calls, make call suggestions to users when they are idle, and provide the caller with feedback on the current status of

Daniel P. Siewiorek; Asim Smailagic; Junichi Furukawa; Andreas Krause; Neema Moraveji; Kathryn Reiger; Jeremy Shaffer; Fei Lung Wong

2003-01-01

122

Standby Power Control Architecture in Context-Aware Home Networks  

Microsoft Academic Search

Standby power is the energy consumed by appliances when they are not performing their main functions or when they are switched\\u000a off. In this paper, we propose a Host-Agent based standby power control architecture in context-aware home network. The proposed\\u000a architecture uses the IEEE 802.15.4 based ZigBee protocol between Host and Agent for communication and security. We have made\\u000a an

Joon Heo; Ji Hyuk Heo; Choong Seon Hong; Seok Bong Kang; Sang Soo Jeon

2007-01-01

123

Testing context-aware middleware-centric programs: a data flow approach and an RFID-based experimentation  

Microsoft Academic Search

Pervasive context-aware software is an emerging kind of application. Smart personal digital as- sistants and RFID-based location sensing software are two examples. Many of these systems register parts of their context-aware logic in the middleware. On the other hand, most conventional testing techniques do not consider such kind of application logic. This paper proposes a novel family of testing criteria

Heng Lu; W. K. Chan; T. H. Tse

2006-01-01

124

Developing a Context-Aware System for Providing Intelligent Robot Services  

Microsoft Academic Search

To realize the vision of ubiquitous computing, it is important to develop a context-aware system which can help ubiquitous\\u000a agents, services, and devices become aware of their contexts. Context-aware system is required to be capable of configuring\\u000a appropriate context model and managing it through the context manipulation. In this paper, we propose the context space and\\u000a the conceptual structure for

Chung-seong Hong; Joonmyun Cho; Kang-woo Lee; Young-ho Suh; Hyun Kim; Hyun-chan Lee

2006-01-01

125

Functionality-power-packaging considerations in context aware wearable systems  

Microsoft Academic Search

Wearable computing places tighter con- straints on architecture design than traditional mobile computing. The architecture is described in terms of miniaturization, power-awareness, global low-power design and suitability for an application. In this article we present a new methodology based on three differ- ent system properties. Functionality, power and elec- tronic Packaging metrics are proposed and evaluated to study different trade

Nagendra Bhargava Bharatula; Paul Lukowicz; Gerhard Tröster

2008-01-01

126

A Context-Aware Ubiquitous Learning Environment for Conducting Complex Science Experiments  

ERIC Educational Resources Information Center

|Context-aware ubiquitous learning (u-learning) is an innovative approach that integrates wireless, mobile, and context-awareness technologies to detect the situation of learners in the real world and provide adaptive support or guidance accordingly. In this paper, a context-aware u-learning environment is developed for guiding inexperienced…

Hwang, Gwo-Jen; Yang, Tzu-Chi; Tsai, Chin-Chung; Yang, Stephen J. H.

2009-01-01

127

Towards the realisation of context-risk-aware access control in pervasive computing  

Microsoft Academic Search

This paper proposes a novel Context-Risk-Aware Access Control (CRAAC) model for Ubiquitous Computing (UbiComp) environments. Context-aware access control allows access permissions to be adjusted\\u000a dynamically in adaptation to the changes in the surrounding context. Though current context-aware access control solutions\\u000a can, to a certain extent, achieve such context adaptation, there are still limitations in these solutions. One of the limitations

Ali Ahmed; Ning Zhang

2010-01-01

128

Agent-Based Support for Context-Aware Provisioning of IMS-Enabled Ubiquitous Services  

NASA Astrophysics Data System (ADS)

Multimedia applications executed on mobile devices allow users to be present and communicate with other users, anywhere and anytime, through wide area cellular networks, wireless local area networks (WLAN), or fixed networks. In order to enable ubiquitous personalized services, communication systems should allow users to specify their context, or their mobile devices and network infrastructures should automatically sense their context and offer enhanced service provisioning solutions. In this paper, we propose an agent-based solution that supports context-aware provisioning of IP multimedia subsystem (IMS)-enabled ubiquitous services. Using agent technology, multimedia communication, controlled by SIP and enriched with context-related events delivered by SIP's event mechanism, can be seamlessly provisioned, taking into account not only mobility issues and context-awareness, but also the semantics of exchanged events. This paper proposes a multi-agent system that will enable users to consume context-aware ubiquitous services in a seamless (i.e., automated) way, providing optimal provisioning of SIP-based multimedia services according to user preferences.

Petric, Ana; Trzec, Krunoslav; Jurasovic, Kresimir; Podobnik, Vedran; Jezic, Gordan; Kusek, Mario; Ljubi, Igor

129

Exploring a Hybrid Approach for Modeling Context Awareness Using Analytic Hierarchy Process and Simulation  

Microsoft Academic Search

Existing research on context and context awareness has broadly focused on the technical aspects of context acquisition and interpretation of users' surroundings, also called physical or sensor-based context. Such an approach is lack of reconciling the user's perception of real-world context and a context-aware system's interpretation of that context. Using Analytic Hierarchy Process (AHP), we propose a hybrid approach that

Yaser Mowafi; G. Forgionne; Dongsong Zhang

2010-01-01

130

Mobile Commerce Application Development: Implementing Location-Aware Information Services  

Microsoft Academic Search

Mobile settingpsilas particularities and limitations are serious. In fact, enhancing the mobile browsing user experience is feasible only if perceptual and contextual considerations are employed. A case study of a context-aware location-based application is designed and implemented in this paper. It is capable to identify and to depict on the map userpsilas current location, to search and detect routes (and

Christos K. Georgiadis

2009-01-01

131

A methodology and a web platform for the collaborative development of context-aware systems.  

PubMed

Information and services personalization is essential for an optimal user experience. Systems have to be able to acquire data about the user's context, process them in order to identify the user's situation and finally, adapt the functionality of the system to that situation, but the development of context-aware systems is complex. Data coming from distributed and heterogeneous sources have to be acquired, processed and managed. Several programming frameworks have been proposed in order to simplify the development of context-aware systems. These frameworks offer high-level application programming interfaces for programmers that complicate the involvement of domain experts in the development life-cycle. The participation of users that do not have programming skills but are experts in the application domain can speed up and improve the development process of these kinds of systems. Apart from that, there is a lack of methodologies to guide the development process. This article presents as main contributions, the implementation and evaluation of a web platform and a methodology to collaboratively develop context-aware systems by programmers and domain experts. PMID:23666131

Martín, David; López-de-Ipiña, Diego; Alzua-Sorzabal, Aurkene; Lamsfus, Carlos; Torres-Manzanera, Emilio

2013-05-10

132

A CONTEXT-AWARE MOBILE MASH-UP PLATFORM FOR UBIQUITOUS WEB  

Microsoft Academic Search

Context-aware systems allow users to access services and multimedia data according to their current context (location, identity, preferences). We deem that applying Web 2.0 and Ubiquitous Web concepts as guiding principles to design middleware infrastructure may ease the development and deployment of context-aware systems and, so, result in a wider adoption of intelligent environments. Our work combines social context-aware annotation

D. López-de-Ipiña; J. I. Vazquez; J. Abaitua

133

u-BabSang: a context-aware food recommendation system  

Microsoft Academic Search

In this paper, we propose a context-aware food recommendation system for well-being care applications. The proposed system,\\u000a called u-BabSang, provides individualized food recommendation lists at the dining table, and is based dietary advice in the\\u000a typical Korean medical text. Our proposed system receives a user’s profile, physiological signals, and environmental information\\u000a around the dining table in real time. To operate

Yoosoo Oh; Ahyoung Choi; Woontack Woo

2010-01-01

134

It's in your eyes: towards context-awareness and mobile HCI using wearable EOG goggles  

Microsoft Academic Search

In this work we describe the design, implementation and evaluation of a novel eye tracker for context-awareness and mobile HCI applications. In contrast to common systems using video cameras, this compact device relies on Elec- trooculography (EOG). It consists of goggles with dry elec- trodes integrated into the frame and a small pocket-worn component with a DSP for real-time EOG

Andreas Bulling; Daniel Roggen; Gerhard Tröster

2008-01-01

135

Semantic web technologies to reconcile privacy and context awareness  

Microsoft Academic Search

Increasingly, application developers are looking for ways to provide users with higher levels of personalization that capture different elements of a user's operating context, such as her location, the task that she is currently engaged in, who her colleagues are, etc. While there are many sources of contextual information, they tend to vary from one user to another and also

Fabien L. Gandon; Norman M. Sadeh

2004-01-01

136

Examining a Bayesian Approach to Personalizing Context Awareness in Ubiquitous Computing Environments  

NASA Astrophysics Data System (ADS)

There is a growing interest in the use of context-aware systems, which can recognize user’s situational context and accordingly provide a desirable interaction with the user. However, the design, development, evaluation and deployment of context-aware systems are still at its infancy. In this paper, we propose an operational mechanism approach to context acquisition driven by the relevant dependency between users’ ongoing activities and context in ubiquitous computing environments. We present a Bayesian model to classify and predict users’ activities and associated context that offers more interactive and construed context awareness to users. The model performance is examined in terms of its classification accuracy in predicting users’ activities and the associated context trends. The results demonstrate that such probabilistic models can provide an effective and feasible approach to learning and predicting users’ context that can yield further the development of deployable context-aware systems.

Mowafi, Yaser; Zhang, Dongsong; Fogionne, Guisseppi

137

Personalized Context-Aware Ubiquitous Learning System for Supporting Effectively English Vocabulary Learning  

Microsoft Academic Search

With the rapid growth of wireless techniques, the mobile learning by the handheld devices has been gradually considered as a novel learning form. Developing context-aware ubiquitous learning environment can bring the most desired learning services for learners. Accordingly, this study proposed a personalized context-aware ubiquitous english vocabulary learning system which can exploit appropriate context based on learner's location, leisure learning

Chih-ming Chen; Yi-lun Li; Ming-chuan Chen

2007-01-01

138

Global-Aware and Multi-Order Context-Based Prefetching for High-Performance Processors  

SciTech Connect

Data prefetching is widely used in high-end computing systems to accelerate data accesses and to bridge the increasing performance gap between processor and memory. Context-based prefetching has become a primary focus of study in recent years due to its general applicability. However, current context-based prefetchers only adopt the context analysis of a single order, which suffers from low prefetching coverage and thus limits the overall prefetching effectiveness. Also, existing approaches usually consider the context of the address stream from a single instruction but not the context of the address stream from all instructions, which further limits the context-based prefetching effectiveness. In this study, we propose a new context-based prefetcher called the Global-aware and Multi-order Context-based (GMC) prefetcher. The GMC prefetcher uses multi-order, local and global context analysis to increase prefetching coverage while maintaining prefetching accuracy. In extensive simulation testing of the SPEC-CPU2006 benchmarks with an enhanced CMP$im simulator, the proposed GMC prefetcher was shown to outperform existing prefetchers and to reduce the data-access latency effectively. The average Instructions Per Cycle (IPC) improvement of SPEC CINT2006 and CFP2006 benchmarks with GMC prefetching was over 55% and 44% respectively.

Chen, Yong [ORNL; Zhu, Huaiyu [Illinois Institute of Technology; Roth, Philip C [ORNL; Jin, Hui [Illinois Institute of Technology; Sun, Xian-He [Illinois Institute of Technology

2011-01-01

139

A Context Aware Interruption Management System for Mobile Devices  

Microsoft Academic Search

\\u000a To prevent unwanted interruptions from cell phones, this paper proposes a system solution considering user’s unavailability.\\u000a We first look at desirable characteristics of the system, then design a system architecture which takes as input user preferences,\\u000a relevant context information and then produces as output if an incoming call should be allowed to ring. We also present a\\u000a case study application

Sina Zulkernain; Praveen Madiraju; Sheikh Iqbal Ahamed

2010-01-01

140

Enabling network-aware applications  

SciTech Connect

Many high performance distributed applications use only a small fraction of their available bandwidth. A common cause of this problem is not a flaw in the application design, but rather improperly tuned network settings. Proper tuning techniques, such as setting the correct TCP buffers and using parallel streams, are well known in the networking community, but outside the networking community they are infrequently applied. In this paper, we describe a service that makes the task of network tuning trivial for application developers and users. Widespread use of this service should virtually eliminate a common stumbling block for high performance distributed applications.

Tierney, Brian L.; Gunter, Dan; Lee, Jason; Stouffer, Martin

2001-08-01

141

A Systematic Design Tool of Context Aware System for Ubiquitous Healthcare Service in a Smart Home  

Microsoft Academic Search

Recent developments of information technologies are leading the advent of the era of ubiquitous healthcare service, which means healthcare services at any time and at any places. In a home, the ubiquitous healthcare service requires some context aware system for smart services using home network. In this paper, we propose a systematic design tool of a context aware system for

Dong-oh Kang; Kyuchang Kang; Hyung-jik Lee; Eun-jung Ko; Jeunwoo Lee

2007-01-01

142

Developing a Survey for Assessing Preferences in Constructivist Context-Aware Ubiquitous Learning Environments  

ERIC Educational Resources Information Center

|This study developed a survey to explore students' preferences in constructivist context-aware ubiquitous learning environments. A constructivist context-aware ubiquitous learning (u-learning) environment survey (CULES) was developed, consisting of eight scales, including ease of use, continuity, relevance, adaptive content, multiple sources,…

Tsai, P.-S.; Tsai, C.-C.; Hwang, G.-J.

2012-01-01

143

Learning in a u-Museum: Developing a Context-Aware Ubiquitous Learning Environment  

ERIC Educational Resources Information Center

Context-awareness techniques can support learners in learning without time or location constraints by using mobile devices and associated learning activities in a real learning environment. Enrichment of context-aware technologies has enabled students to learn in an environment that integrates learning resources from both the real world and the…

Chen, Chia-Chen; Huang, Tien-Chi

2012-01-01

144

A Heuristic Algorithm for Planning Personalized Learning Paths for Context-Aware Ubiquitous Learning  

ERIC Educational Resources Information Center

|In a context-aware ubiquitous learning environment, learning systems can detect students' learning behaviors in the real-world with the help of context-aware (sensor) technology; that is, students can be guided to observe or operate real-world objects with personalized support from the digital world. In this study, an optimization problem that…

Hwang, Gwo-Jen; Kuo, Fan-Ray; Yin, Peng-Yeng; Chuang, Kuo-Hsien

2010-01-01

145

Supporting the supermarket shopping experience through a context-aware shopping trolley  

Microsoft Academic Search

Shopping in supermarkets is becoming an increasingly interactive experience as stores integrate technologies to support shoppers. While shopping is an essential and routine type of consumer behaviour, emerging technologies posses the qualities to change our behaviour and patterns while shopping. This paper describes CAST - a context-aware shopping trolley designed to support the shopping activity in a supermarket through context-awareness

Darren Black; Nils Jakob Clemmensen; Mikael B. Skov

2009-01-01

146

Empowering users to control their privacy in context- aware systems through interactive consent  

Microsoft Academic Search

Context-aware systems adapt their behaviour based on the context a user is in. Since context is potentially privacy sensitive information, users should be empowered to control how much of their context they are willing to share, under what conditions and for what purpose. We propose an interactive consent mechanism that allows this. It is interactive in the sense that users

Maarten Wegdam; Dirk-Jaap Plas

2008-01-01

147

MultiSensor Context-Awareness in Mobile Devices and Smart Artifacts  

Microsoft Academic Search

The use of context in mobile devices is receiving increasing attention in mobile and ubiquitous computing research. In this article we consider how to augment mobile devices with awareness of their environment and situation as context. Most work to date has been based on integration of generic context sensors, in particular for location and visual context. We propose a different

Hans-werner Gellersen; Albrecht Schmidt; Michael Beigl

2002-01-01

148

A Two-Stage Composition Method for Danger-Aware Services Based on Context Similarity  

NASA Astrophysics Data System (ADS)

Context-aware systems detect user's physical and social contexts based on sensor networks, and provide services that adapt to the user accordingly. Representing, detecting, and managing the contexts are important issues in context-aware systems. Composition of contexts is a useful method for these works, since it can detect a context by automatically composing small pieces of information to discover service. Danger-aware services are a kind of context-aware services which need description of relations between a user and his/her surrounding objects and between users. However when applying the existing composition methods to danger-aware services, they show the following shortcomings that (1) they have not provided an explicit method for representing composition of multi-user' contexts, (2) there is no flexible reasoning mechanism based on similarity of contexts, so that they can just provide services exactly following the predefined context reasoning rules. Therefore, in this paper, we propose a two-stage composition method based on context similarity to solve the above problems. The first stage is composition of the useful information to represent the context for a single user. The second stage is composition of multi-users' contexts to provide services by considering the relation of users. Finally the danger degree of the detected context is computed by using context similarity between the detected context and the predefined context. Context is dynamically represented based on two-stage composition rules and a Situation theory based Ontology, which combines the advantages of Ontology and Situation theory. We implement the system in an indoor ubiquitous environment, and evaluate the system through two experiments with the support of subjects. The experiment results show the method is effective, and the accuracy of danger detection is acceptable to a danger-aware system.

Wang, Junbo; Cheng, Zixue; Jing, Lei; Ota, Kaoru; Kansen, Mizuo

149

An infrastructure to enable lightweight context-awareness for mobile users.  

PubMed

Mobile phones enable us to carry out a wider range of tasks every day, and as a result they have become more ubiquitous than ever. However, they are still more limited in terms of processing power and interaction capabilities than traditional computers, and the often distracting and time-constricted scenarios in which we use them do not help in alleviating these limitations. Context-awareness is a valuable technique to address these issues, as it enables to adapt application behaviour to each situation. In this paper we present a context management infrastructure for mobile environments, aimed at controlling context information life-cycle in this kind of scenarios, with the main goal of enabling application and services to adapt their behaviour to better meet end-user needs. This infrastructure relies on semantic technologies and open standards to improve interoperability, and is based on a central element, the context manager. This element acts as a central context repository and takes most of the computational burden derived from dealing with this kind of information, thus relieving from these tasks to more resource-scarce devices in the system. PMID:23899932

Curiel, Pablo; Lago, Ana B

2013-07-29

150

An Infrastructure to Enable Lightweight Context-Awareness for Mobile Users  

PubMed Central

Mobile phones enable us to carry out a wider range of tasks every day, and as a result they have become more ubiquitous than ever. However, they are still more limited in terms of processing power and interaction capabilities than traditional computers, and the often distracting and time-constricted scenarios in which we use them do not help in alleviating these limitations. Context-awareness is a valuable technique to address these issues, as it enables to adapt application behaviour to each situation. In this paper we present a context management infrastructure for mobile environments, aimed at controlling context information life-cycle in this kind of scenarios, with the main goal of enabling application and services to adapt their behaviour to better meet end-user needs. This infrastructure relies on semantic technologies and open standards to improve interoperability, and is based on a central element, the context manager. This element acts as a central context repository and takes most of the computational burden derived from dealing with this kind of information, thus relieving from these tasks to more resource-scarce devices in the system.

Curiel, Pablo; Lago, Ana B.

2013-01-01

151

Multi-core aware applications in CMS  

NASA Astrophysics Data System (ADS)

One of the significant trends of recent years has been the move towards multicore CPU's with ever increasing numbers of cores. CMS has been preparing multicore aware applications that rely on "multi-processing", namely the sharing of memory between processes forked from a single parent process. First experience with deploying these applications for production will be presented, as well as results from detailed profiling done to understand the limits of scaling with increasing numbers of cores.

Jones, C. D.; Elmer, P.; Sexton-Kennedy, L.; Green, C.; Baldooci, A.

2011-12-01

152

Context-Aware Users' Preference Models by Integrating Real and Supposed Situation Data  

NASA Astrophysics Data System (ADS)

This paper proposes a novel approach of constructing statistical preference models for context-aware personalized applications such as recommender systems. In constructing context-aware statistical preference models, one of the most important but difficult problems is acquiring a large amount of training data in various contexts/situations. In particular, some situations require a heavy workload to set them up or to collect subjects capable of answering the inquiries under those situations. Because of this difficulty, it is usually done to simply collect a small amount of data in a real situation, or to collect a large amount of data in a supposed situation, i.e., a situation that the subject pretends that he is in the specific situation to answer inquiries. However, both approaches have problems. As for the former approach, the performance of the constructed preference model is likely to be poor because the amount of data is small. For the latter approach, the data acquired in the supposed situation may differ from that acquired in the real situation. Nevertheless, the difference has not been taken seriously in existing researches. In this paper we propose methods of obtaining a better preference model by integrating a small amount of real situation data with a large amount of supposed situation data. The methods are evaluated using data regarding food preferences. The experimental results show that the precision of the preference model can be improved significantly.

Ono, Chihiro; Takishima, Yasuhiro; Motomura, Yoichi; Asoh, Hideki; Shinagawa, Yasuhide; Imai, Michita; Anzai, Yuichiro

153

Policy-Based Ambiguity Reduction in Pervasive Context-Aware Systems  

Microsoft Academic Search

Summary There has been an ever-increasing interest in context- aware computing expressed by the pervasive computing community. As researchers attempt to create pervasive systems that are unobtrusively embedded in the environment, completely connected, intuitive, effortlessly portable, and constantly available, often do they run into the problem of ambiguity in the determination of the surrounding context. With the presence of context

Sherif G. Aly

2007-01-01

154

Online Evolutionary Context-Aware Classifier Ensemble Framework For Object Recognition  

Microsoft Academic Search

In this paper, we propose an online evolutionary context-aware classifier ensemble framework for object recognition systems which are adaptive to various environments. The starting point utilizes a context recognizer, a context knowledge base and a classifier ensemble generator to provide optimal solutions for classifier ensemble. Even though our framework is quite general and could be applied to various classification tasks,

Zhan Yu; Mi Young Nam; Phill-Kyu Rhee

2009-01-01

155

A mixed CCN-MAS architecture to handle context-awareness in hybrid networks  

Microsoft Academic Search

In the future Internet, context-aware content transmission should be done seamlessly. However, context aggregation and handling in today's communication networks is still a challenging problem as mobility of nodes and users makes information routing as well as context processing difficult. We suggest here that the paradigms of content object and content-centric network can be used together and exploited by a

Yannick Naudet; Gerald Arnould; Sabrina Mignon; Muriel Foulonneau; Karl Devooght; Damien Nicolas

2011-01-01

156

Study on the Context-Aware Middleware for Ubiquitous Greenhouses Using Wireless Sensor Networks  

PubMed Central

Wireless Sensor Network (WSN) technology is one of the important technologies to implement the ubiquitous society, and it could increase productivity of agricultural and livestock products, and secure transparency of distribution channels if such a WSN technology were successfully applied to the agricultural sector. Middleware, which can connect WSN hardware, applications, and enterprise systems, is required to construct ubiquitous agriculture environment combining WSN technology with agricultural sector applications, but there have been insufficient studies in the field of WSN middleware in the agricultural environment, compared to other industries. This paper proposes a context-aware middleware to efficiently process data collected from ubiquitous greenhouses by applying WSN technology and used to implement combined services through organic connectivity of data. The proposed middleware abstracts heterogeneous sensor nodes to integrate different forms of data, and provides intelligent context-aware, event service, and filtering functions to maximize operability and scalability of the middleware. To evaluate the performance of the middleware, an integrated management system for ubiquitous greenhouses was implemented by applying the proposed middleware to an existing greenhouse, and it was tested by measuring the level of load through CPU usage and the response time for users’ requests when the system is working.

Hwang, Jeonghwang; Yoe, Hyun

2011-01-01

157

An Architecture for Location Aware Applications  

Microsoft Academic Search

This paper presents an architecture for location aware applications, where positioning sources such as GPS, WaveLAN and Bluetooth devices can be seamlessly inter- changed or even combined to achieve a more accurate po- sitioning service with a higher availability than a single po- sitioning source could provide. The architecture also sup- ports peer-to-peer communication to allow clients to in- terchange

James Nord; Kåre Synnes; Peter Parnes

2002-01-01

158

A Quality of Context-Aware Approach to Access Control in Pervasive Environments  

NASA Astrophysics Data System (ADS)

The widespread diffusion of wireless-enabled portable devices creates novel opportunities for users to share resources anywhere and anytime, but makes access control a crucial issue. User/device mobility and heterogeneity, together with network topology and conditions variability, complicate access control and call for novel solutions to dynamically adapt access decisions to the different operating conditions. Several research efforts have emerged in recent years that propose to exploit context-awareness to control access to resources based on context visibility and changes. Context-based access control requires, however, to take into account the quality of context information used to drive access decisions (QoC). Quality of context has in fact a profound impact on the correct behavior of any context-aware access control framework. Using context information with insufficient quality might increase the risk of incorrect access control decisions, thus leading to dangerous security breaches in resource sharing. In this paper we propose a QoC-aware approach to access control for anywhere, anytime resource sharing. The paper describes the design, implementation and evaluation of the Proteus policy framework, which combines two design guidelines to enable dynamic adaptation of policies depending on context changes: context-awareness with QoC guarantees and semantic technologies to allow high-level description of context/policy specification and reasoning about context/policies.

Toninelli, Alessandra; Corradi, Antonio; Montanari, Rebecca

159

Developments in metaphor inference and context-aware affect sensing  

Microsoft Academic Search

Real-time contextual and metaphorical affect sensing from open-ended multithreaded dialogue is challenging but essential for the building of effective intelligent user interfaces. In this paper, we focus on context-based affect detection using emotion modeling in personal and social communication context. It mainly focuses on emotion evolvement and prediction in such communication contexts. The work also accompanies research on metaphorical affect

Li Zhang

2011-01-01

160

Awareness of disability after acquired brain injury and the family context  

Microsoft Academic Search

The dimension of family context for awareness of disability following acquired brain injury (ABI) is examined through a qualitative discourse analysis. Three participants with ABI, who were identified by clinicians and relatives as demonstrating difficulties with awareness of disability, and three relatives were interviewed. The findings highlight important contextual parameters influencing the emergence of families' accounts for disability after ABI:

Giles Yeates; Karen Henwood; Fergus Gracey; Jonathan Evans

2007-01-01

161

Context-Aware Data Mining Methodology for Supply Chain Finance Cooperative Systems  

Microsoft Academic Search

Context-awareness computing work has been carried out by many researchers. However, little has been done in building a context-aware data mining methodology which supports decision-making based on an enterprise supply chain finance cooperative systems. An enterprise supply chain finance cooperative system that interacts with bank, buyer and supplier environment may not have sufficient knowledge of the environment, and it is

Liu Xiang

2009-01-01

162

Heterogeneous context-aware routing protocol for opportunistic network  

Microsoft Academic Search

Opportunistic networking-forwarding messages in a disconnected mobile ad hoc network via any encountered nodes-offers a new mechanism for exploiting the mobile devices that many users already carry. However, forwarding messages in such a network is trapped by many particular challenges, and some protocols have contributed to solve them partly. In this paper, we propose heterogeneous content-aware routing protocol (HCR) for

Xingguang Xie; Yong Zhang; Chao Dai; Mei Song

2010-01-01

163

A Knowledge-Based Approach to Retrieving Teaching Materials for Context-Aware Learning  

ERIC Educational Resources Information Center

|With the rapid development of wireless communication and sensor technologies, ubiquitous learning has become a promising solution to educational problems. In context-aware ubiquitous learning environments, it is required that learning content is retrieved according to environmental contexts, such as learners' location. Also, a learning content…

Shih, Wen-Chung; Tseng, Shian-Shyong

2009-01-01

164

MultiSensor Context-Awareness in Mobile Devices and Smart Artefacts  

Microsoft Academic Search

The use of context in mobile devices is receiving increasing attention in mobile and ubiquitous computing research. In this article we consider how to augment mobile devices with awareness of their environment and situation as context. Most work to date has been based on integration of generic sensor, in particular for positioning and for vision. We propose the integration of

Hans-W. Gellersen; Albrecht Schmidt; Michael Beigl

2003-01-01

165

Context-Awareness in Wearable and Ubiquitous Computing  

Microsoft Academic Search

A common focus shared by researchers in mobile, ubiquitous and wearable computing is the attempt to break away from the traditional desktop computing paradigm. Computational services need to become as mobile as their users and be extended to take advantage of the constantly changing context in which they are accessed. This paper will report on work done in the Future

Gregory D. Abowd; Anind K. Dey; Robert Orr; Jason A. Brotherton

1997-01-01

166

Model-driven Engineering of Active Context-awareness  

Microsoft Academic Search

More and more Web users ask for contents and services highly tailored to their particular contexts of use. Especially due to the increasing affordability of new and powerful mobile communication de- vices, they also appreciate the availability of ubiquitous access, indepen- dent from the device actually in use. Due to such premises, traditional software design methods need to be extended,

Stefano Ceri; Florian Daniel; Federico Michele Facca; Maristella Matera

2007-01-01

167

CONTEXT-AWARE ACCESS CONTROL USING SEMANTIC POLICIES  

Microsoft Academic Search

One of the aspects of autonomic computing is self-protecting where systems are required to consistently enforce security policies in order to allow legitimate actions. The information that comes through the feedback loop after being monitored and analayzed tells the systems what is happening in the environments. The analyzed information describes situation and it is called context. The challenge lies in

Anand Dersingh; Ramiro Liscano; Allan Jost

168

Context-aware brain-computer interfaces: exploring the information space of user, technical system and environment.  

PubMed

Brain-computer interface (BCI) systems are usually applied in highly controlled environments such as research laboratories or clinical setups. However, many BCI-based applications are implemented in more complex environments. For example, patients might want to use a BCI system at home, and users without disabilities could benefit from BCI systems in special working environments. In these contexts, it might be more difficult to reliably infer information about brain activity, because many intervening factors add up and disturb the BCI feature space. One solution for this problem would be adding context awareness to the system. We propose to augment the available information space with additional channels carrying information about the user state, the environment and the technical system. In particular, passive BCI systems seem to be capable of adding highly relevant context information-otherwise covert aspects of user state. In this paper, we present a theoretical framework based on general human-machine system research for adding context awareness to a BCI system. Building on that, we present results from a study on a passive BCI, which allows access to the covert aspect of user state related to the perceived loss of control. This study is a proof of concept and demonstrates that context awareness could beneficially be implemented in and combined with a BCI system or a general human-machine system. The EEG data from this experiment are available for public download at www.phypa.org. PMID:22156069

Zander, T O; Jatzev, S

2011-12-07

169

Flexible Macroblock Ordering for Context-Aware Ultrasound Video Transmission over Mobile WiMAX.  

PubMed

The most recent network technologies are enabling a variety of new applications, thanks to the provision of increased bandwidth and better management of Quality of Service. Nevertheless, telemedical services involving multimedia data are still lagging behind, due to the concern of the end users, that is, clinicians and also patients, about the low quality provided. Indeed, emerging network technologies should be appropriately exploited by designing the transmission strategy focusing on quality provision for end users. Stemming from this principle, we propose here a context-aware transmission strategy for medical video transmission over WiMAX systems. Context, in terms of regions of interest (ROI) in a specific session, is taken into account for the identification of multiple regions of interest, and compression/transmission strategies are tailored to such context information. We present a methodology based on H.264 medical video compression and Flexible Macroblock Ordering (FMO) for ROI identification. Two different unequal error protection methodologies, providing higher protection to the most diagnostically relevant data, are presented. PMID:20827292

Martini, Maria G; Hewage, Chaminda T E R

2010-08-05

170

Context-awareness in wireless and mobile computing revisited to embrace social networking  

Microsoft Academic Search

The inherent context-awareness properties of pervasive computing and the need for efficient user profiling and location information management quickly made it obvious that context management would become a top priority requirement in telecommunications service platforms. What we now call social networking was ¿born¿ around the early-mid `00s, a time when the first context management models and frameworks were being designed

Ioanna Roussaki; Nikos Kalatzis; Nicolas Liampotis; Pavlos Kosmides; Miltiades Anagnostou; Kevin Doolin; Edel Jennings; Yiorgos Bouloudis; Stavros Xynogalas

2012-01-01

171

Modeling Context-Aware e-Learning Scenarios  

Microsoft Academic Search

In the last decade, e-learning has been introduced to a variety of blended learning scenarios, such as life-long learning, University lectures, and game-based learning. In all these scenarios the learner's situation or context is an essential asset in designing the learning process. Recent research suggests aiding the design process through the use of visual modeling approaches. Pervasive computing environments particularly

Michael Derntl; Karin Anna Hummel

2005-01-01

172

Network Awareness in P2P-TV Applications  

NASA Astrophysics Data System (ADS)

The increasing popularity of applications for video-streaming based on P2P paradigm (P2P-TV) is raising the interest of both broadcasters and network operators. The former see a promising technology to reduce the cost of streaming content over the Internet, while offering a world-wide service. The latter instead fear that the traffic offered by these applications can grow without control, affecting other services, and possibly causing network congestion and collapse. The “Network-Aware P2P-TV Application over Wise Networks” FP7 project aims at studying and developing a novel P2P-TV application offering the chance to broadcast high definition video to broadcasters and to carefully manage the traffic offered by peers to the network, therefore avoiding worries to Internet providers about network overload. In such context, we design a simulator to evaluate performance of different P2P-TV solutions, to compare them both considering end-users’ and network providers’ perspectives, such as quality of service perceived by subscribers and link utilization. In this paper, we provide some results that show how effective can be a network aware P2P-TV system.

Traverso, Stefano; Leonardi, Emilio; Mellia, Marco; Meo, Michela

173

The Applicability of Self-Awareness for Network Management Operations  

NASA Astrophysics Data System (ADS)

Network management operation will get increasingly more difficult in next generation and Future Internet scenarios due to many factors, such as mobility and the need for context-awareness. This position paper argues that the increasing complexity in business, system, and other operations can only be managed by making the systems aware of their own operations. This is shown by describing how self-awareness is implemented in the FOCALE autonomic architecture.

Strassner, John; van der Meer, Sven; Hong, James Won-Ki

174

Context-Aware Configuration: A Study on Improving Cell Phone Awareness  

Microsoft Academic Search

As the number of mobile devices we carry grows, the job of manag- ing those devices throughout the day becomes cumbersome. This is especially true for cell phones. Despite the many benefits they provide, cell phones create problems that arise from a mismatch between the user's context and the cell phone's behavior. In large part, the mismatch occurs because owners

Ashraf Khalil; Kay Connelly

2005-01-01

175

SOLE: context-aware sharing of living experiences  

Microsoft Academic Search

Purpose – The rapid advances in the technologies of mobile computing and wireless communications have facilitated the use of applications and services on handheld devices. Sharing of living experience (SOLE) is one such service, through which users can share their experience of daily activities such as shopping, entertainment, and traveling. This paper seeks to study SOLE in more detail. Design\\/methodology\\/approach

Jian Zhu; Mohammad Oliya; Hung Keng Pung; Lawrence Wai-Choong Wong

2011-01-01

176

IRENE: Context aware mood sharing for social network  

Microsoft Academic Search

Social networking sites like Facebook, twitter, and myspace are becoming overwhelmingly powerful media in today's world. Facebook has 500 million active users and twitter has 190 million visitors per month and increasing each second. On the other hand number of smart phone users has crossed 45 millions. Now we are focusing on building an application that will connect these two

Munirul M. Haque; David Polyak; Niharika Jain; Sheikh I. Ahamed; Lin Liu

2011-01-01

177

A Personalized and Context-Aware Adaptation Process for Web-Based Groupware Systems  

Microsoft Academic Search

The evolution of mobile technologies, like web-enable cellphones, PDAs and wireless networks, makes it now possible to use these technologies for collaborative work through web-based groupware systems. However, due to the limitations of these technologies, some adaptation is essential in these systems. In order to adapt their behaviour to the user's context, groupware systems must be built as context-aware systems.

Manuele Kirsch-pinheiro; Marlène Villanova-oliver; Jérôme Gensel; Hervé Martin

2006-01-01

178

NCBO Technology: Powering semantically aware applications.  

PubMed

As new biomedical technologies are developed, the amount of publically available biomedical data continues to increase. To help manage these vast and disparate data sources, researchers have turned to the Semantic Web. Specifically, ontologies are used in data annotation, natural language processing, information retrieval, clinical decision support, and data integration tasks. The development of software applications to perform these tasks requires the integration of Web services to incorporate the wide variety of ontologies used in the health care and life sciences. The National Center for Biomedical Ontology, a National Center for Biomedical Computing created under the NIH Roadmap, developed BioPortal, which provides access to one of the largest repositories of biomedical ontologies. The NCBO Web services provide programmtic access to these ontologies and can be grouped into four categories; Ontology, Mapping, Annotation, and Data Access. The Ontology Web services provide access to ontologies, their metadata, ontology versions, downloads, navigation of the class hierarchy (parents, children, siblings) and details of each term. The Mapping Web services provide access to the millions of ontology mappings published in BioPortal. The NCBO Annotator Web service "tags" text automatically with terms from ontologies in BioPortal, and the NCBO Resource Index Web services provides access to an ontology-based index of public, online data resources. The NCBO Widgets package the Ontology Web services for use directly in Web sites. The functionality of the NCBO Web services and widgets are incorporated into semantically aware applications for ontology development and visualization, data annotation, and data integration. This overview will describe these classes of applications, discuss a few examples of each type, and which NCBO Web services are used by these applications. PMID:23734708

Whetzel, Patricia L

2013-04-15

179

Context and task-aware knowledge-enhanced compressive imaging  

NASA Astrophysics Data System (ADS)

We describe a foveated compressive sensing approach for image analysis applications that utilizes knowledge of the task to be performed to reduce the number of required measurements compared to conventional Nyquist sampling and compressive sensing based approaches. Our Compressive Optical Foveated Architecture (COFA) adapts the dictionary and compressive measurements to structure and sparsity in the signal, task, and scene by reducing measurement and dictionary mutual coherence and increasing sparsity using principles of actionable information and foveated compressive sensing. Actionable information is used to extract task-relevant regions of interest (ROIs) from a low-resolution scene analysis by eliminating the effects of nuisances for occlusion and anomalous motion detection. From the extracted ROIs, preferential measurements are taken using foveation as part of the compressive sensing adaptation process. The task-specific measurement matrix is optimized by using a novel saliency-weighted coherence minimization with respect to the learned signal dictionary. This incorporates the relative usage of the atoms in the dictionary. Therefore, the measurement matrix is not random, as in conventional compressive sensing, but is based on the dictionary structure and atom distributions. We utilize a patch-based method to learn the signal priors. A treestructured dictionary of image patches using KSVD is learned which can sparsely represent any given image patch with the tree-structure. We have implemented COFA in an end-to-end simulation of a vehicle fingerprinting task for aerial surveillance using foveated compressive measurements adapted to hierarchical ROIs consisting of background, roads, and vehicles. Our results show 113x reduction in measurements over conventional sensing and 28x reduction over compressive sensing using random measurements.

Rao, Shankar; Ni, Kang-Yu; Owechko, Yuri

2013-09-01

180

Instant collaboration: using context-aware instant messaging for session management in distributed collaboration tools  

Microsoft Academic Search

Distributed collaboration has become increasingly important, and instant messaging has become widely used for distributed communication. We present findings from an investigation of instant messaging use for work-related activities in a commercial setting. Based on these findings, we propose a lightweight session management design for distributed collaboration tools based on context-aware instant messaging. An implementation of this design is presented

Klaus Marius Hansen; Christian Heide Damm

2002-01-01

181

Architecture of a Context-aware and Adaptive Learning Schedule for Learning Java  

Microsoft Academic Search

Novice programmers require large amounts of time and motivation to learn an object-oriented programming language such as Java. In this paper, the architecture of our context-aware and adaptive learning schedule (CALS) tool is described. The tool has been designed to focus initially on supporting first year computer science undergraduate students to become more proficient Java programmers, and makes use of

Jane Yau; Mike Joy

2007-01-01

182

An Adaptive Navigation Support System for Conducting Context-Aware Ubiquitous Learning in Museums  

ERIC Educational Resources Information Center

|In context-aware ubiquitous learning, students are guided to learn in the real world with personalized supports from the learning system. As the learning resources are realistic objects in the real world, certain physical constraints, such as the limitation of stream of people who visit the same learning object, the time for moving from one…

Chiou, Chuang-Kai; Tseng, Judy C. R.; Hwang, Gwo-Jen; Heller, Shelly

2010-01-01

183

College Students' Conceptions of Context-Aware Ubiquitous Learning: A Phenomenographic Analysis  

ERIC Educational Resources Information Center

|The purpose of this study was to explore students' conceptions of context-aware ubiquitous learning (u-learning). The students participated in a u-learning exercise using PDAs equipped with RFID readers. The data were collected from individual interviews with each of the students by a trained researcher, and the responses of the interviewees were…

Tsai, Pei-Shan; Tsai, Chin-Chung; Hwang, Gwo-Haur

2011-01-01

184

College Students' Conceptions of Context-Aware Ubiquitous Learning: A Phenomenographic Analysis  

ERIC Educational Resources Information Center

The purpose of this study was to explore students' conceptions of context-aware ubiquitous learning (u-learning). The students participated in a u-learning exercise using PDAs equipped with RFID readers. The data were collected from individual interviews with each of the students by a trained researcher, and the responses of the interviewees were…

Tsai, Pei-Shan; Tsai, Chin-Chung; Hwang, Gwo-Haur

2011-01-01

185

The Family Intercom: Developing a Context-Aware Audio Communication System  

Microsoft Academic Search

We have begun an exploration of how ubiquitous computing tech- nology can facilitate different forms of audio communication within a family. We are interested in both intra- and inter-home communication. Though much technology exists to support this human-human communication, none of them make effective use of the context of the communication partners. In the Aware Home Research Initiative, we are

Kris Nagel; Cory D. Kidd; Thomas O’Connell; Anind K. Dey; Gregory D. Abowd

2001-01-01

186

CybreMinder: A Context-Aware System for Supporting Reminders  

Microsoft Academic Search

Current tools do not provide adequate support to users for handling reminders. The main reason for this is the lack of use of rich context that speci- fies when a reminder should be presented to its recipient. We describe Cybre- Minder, a prototype c ontext-aware tool t hat supports users in sending and re- ceiving reminders that can b e

Anind K. Dey; Gregory D. Abowd

2000-01-01

187

Developing Critical Social Awareness through Digital Literacy Practices within the Context of Higher Education in Brazil  

ERIC Educational Resources Information Center

|This paper discusses a teaching experience developed in the context of Brazilian higher education, which had as its central goal developing critical social awareness through digital literacy teaching. The discussion begins with an explanation of a Neo-Gramscian approach to critical literacy education, contextualising this perspective within…

Braga, Denise Bertoli

2007-01-01

188

Smart sinks: real-world opportunities for context-aware interaction  

Microsoft Academic Search

Can implicit interaction with a computer easily drive useful interface improvements in physical world settings? This paper presents a case study presenting multiple such context-aware interaction improvements in a sink. We have identified opportunities where automated interfaces at the sink have positive consequences for safety, hygiene and ecology. The danger of scalding oneself with hot water is confronted by transforming

Leonardo Bonanni; Ernesto Arroyo; Chia-Hsun Lee; Ted Selker

2005-01-01

189

Using CALL in a Formal Learning Context to Develop Oral Language Awareness in ESL: An Assessment  

ERIC Educational Resources Information Center

|French learners at university meet difficulties in the comprehension of oral English. Being in a formal context of language learning, they need to develop language awareness to compensate for insufficient exposure to the English language. To meet the students' needs, data was collected in order to pinpoint the main errors made by French learners…

Vincent-Durroux, Laurence; Poussard, Cecile; Lavaur, Jean-Marc; Aparicio, Xavier

2011-01-01

190

Presence versus availability: the design and evaluation of a context-aware communication client  

Microsoft Academic Search

Although electronic communication plays an important role in the modern workplace, the interruptions created by poorly-timed attempts to communicate are disruptive. Prior work suggests that sharing an indication that a person is currently busy might help to prevent such interruptions, because people could wait for a person to become available before attempting to initiate communication. We present a context-aware communication

James Fogarty; Jennifer Lai; Jim Christensen

191

Using smart phones for context-aware prompting in smart environments  

Microsoft Academic Search

Individuals with cognitive impairment have difficulty successfully performing activities of daily living, which can lead to decreased independence. In order to help these individuals age in place and decrease caregiver burden, technologies for assistive living have gained popularity over the last decade. In this work, a context-aware prompting system is implemented, augmented by a smart phone to determine prompt situations

Barnan Das; Adriana M. Seelye; Brian L. Thomas; Diane J. Cook; Larry B. Holder; Maureen Schmitter-Edgecombe

2012-01-01

192

Heuristics-Based Strategies for Resolving Context Inconsistencies in Pervasive Computing Applications  

Microsoft Academic Search

Context$awareness allows pervasive applications to adapt to changeable computing environments. Con$ texts, the pieces of information that capture the cha$ racteristics of environments, are often error$prone and inconsistent due to noises. Various strategies have been proposed to enable automatic context inconsis$ tency resolution. They are formulated on different as$ sumptions that may not hold in practice. This causes applications to

Chang Xu; Shing-chi Cheung; Wing Kwon Chan; Chunyang Ye

2008-01-01

193

Context-aware brain-computer interfaces: exploring the information space of user, technical system and environment  

NASA Astrophysics Data System (ADS)

Brain-computer interface (BCI) systems are usually applied in highly controlled environments such as research laboratories or clinical setups. However, many BCI-based applications are implemented in more complex environments. For example, patients might want to use a BCI system at home, and users without disabilities could benefit from BCI systems in special working environments. In these contexts, it might be more difficult to reliably infer information about brain activity, because many intervening factors add up and disturb the BCI feature space. One solution for this problem would be adding context awareness to the system. We propose to augment the available information space with additional channels carrying information about the user state, the environment and the technical system. In particular, passive BCI systems seem to be capable of adding highly relevant context information—otherwise covert aspects of user state. In this paper, we present a theoretical framework based on general human-machine system research for adding context awareness to a BCI system. Building on that, we present results from a study on a passive BCI, which allows access to the covert aspect of user state related to the perceived loss of control. This study is a proof of concept and demonstrates that context awareness could beneficially be implemented in and combined with a BCI system or a general human-machine system. The EEG data from this experiment are available for public download at www.phypa.org. Parts of this work have already been presented in non-journal publications. This will be indicated specifically by appropriate references in the text.

Zander, T. O.; Jatzev, S.

2012-02-01

194

The Context Oriented Architecture: An Augmentation of Context Awareness and Reactivity into Web Services  

Microsoft Academic Search

Standardization promotes web services as a very promising candidate for successfully integrating disparately heterogeneous\\u000a systems. As such, web services prove themselves to be very suitable candidates for supporting the predominantly heterogeneous\\u000a pervasive environments. The ability of web services however to sense their surrounding context and effectively react to it\\u000a is still a matter of research. In this work, we introduce

Aisha Mohamed-salama Elsafty; Sherif Gamal Aly; Ahmed Sameh

2008-01-01

195

Technological Applications to Support Children's Development of Spatial Awareness  

ERIC Educational Resources Information Center

This article presents methods and theory behind promoting children's spatial awareness through representing 3D reality in 2D cyberspace. Spatial awareness in children is an often neglected aspect in early education. However, applications such as GPS and 3D modeling programs can be used to offer children rich experiences that allow children to…

Matthews, David; Geist, Eugene A.

2002-01-01

196

Technological Applications to Support Children's Development of Spatial Awareness  

ERIC Educational Resources Information Center

|This article presents methods and theory behind promoting children's spatial awareness through representing 3D reality in 2D cyberspace. Spatial awareness in children is an often neglected aspect in early education. However, applications such as GPS and 3D modeling programs can be used to offer children rich experiences that allow children to…

Matthews, David; Geist, Eugene A.

2002-01-01

197

Enhancing the Creativity Process by Adding Context Awareness in Creativity Support Tools  

Microsoft Academic Search

The existence of creativity support tools establishes creativity as part of the Computer Science research. Therefore, the\\u000a development of computational methods for the enhancement of creativity is undoubtedly a challenge. In this paper we argue\\u000a that adding context awareness in creativity support tools will enhance the creativity process. This belief is based on the\\u000a evaluation of a number of the

George A. Sielis; Aimilia Tzanavari; George A. Papadopoulos

2009-01-01

198

InCarMusic: Context-Aware Music Recommendations in a Car  

Microsoft Academic Search

\\u000a Context aware recommender systems (CARS) adapt to the specific situation in which the recommended item will be consumed. So,\\u000a for instance, music recommendations while the user is traveling by car should take into account the current traffic condition\\u000a or the driver’s mood. This requires the acquisition of ratings for items in several alternative contextual situations, to\\u000a extract from this data

Linas Baltrunas; Marius Kaminskas; Bernd Ludwig; Omar Moling; Francesco Ricci; Aykan Aydin; Karl-Heinz Lüke; Roland Schwaiger

199

A Hybrid Model of Context-aware Service Provisioning Implemented on Smart Phones  

Microsoft Academic Search

Mobile users of future ubiquitous environments require novel means for locating relevant services available in their daily surroundings, where relevance has a user-specific definition. In this paper, we propose the hybrid service provisioning model which complements the traditional model of interaction service provider to consumer with peer-to-peer functionalities. In addition to being notified proactively and in a context-aware manner about

Oriana Riva; Santtu Toivonen

2006-01-01

200

Investigating context-aware clues to assist navigation for visually impaired people  

Microsoft Academic Search

It is estimated that 7.4 million people in Europe are visually impaired (1). Limitations of traditional mobility aids (i.e. white canes and guide dogs) coupled with a proliferation of context-aware technologies (e.g. Electronic Travel Aids, Global Positioning Systems and Geographical Information Systems), have stimulated research and development into navigational systems for the visually impaired. However, current research appears very technology

Nicholas A. Bradley; Mark D. Dunlop

2002-01-01

201

Seeing the World through an Expert's Eyes: Context-Aware Display as a Training Companion  

Microsoft Academic Search

Responsive Adaptive Display Anticipates Requests (RADAR) is a domain general system that learns to highlight an individual’s\\u000a preferred information displays, given the current context. Previous studies with human subjects in a video game environment\\u000a demonstrate that RADAR is an effective cognitive aid. RADAR increases situation awareness and reduces cognitive load by anticipating\\u000a and providing task relevant information. Additionally, because RADAR’s

Marc T. Tomlinson; Michael Howe; Bradley C. Love

2009-01-01

202

A Conceptual Framework of Affective Context-Aware Interactive Learning Media  

Microsoft Academic Search

We propose an affective context-aware interactive learning media that provides dynamic feedbacks to human motions, speech,\\u000a and affects in real time. The proposed framework perceives and keeps track of emotional state of student by employing affect\\u000a recognition techniques in learning to encourage active participation, facilitate expressivities and bypass tool barriers through\\u000a various interactive activities and dynamically adapts the interactive contents

Horace Ho-shing Ip; Belton Kwong

2007-01-01

203

BlueSpace: Creating a Personalized and Context-Aware Workspace  

Microsoft Academic Search

This paper provides a snapshot of the BlueSpace project at the IBM T. J. Watson Research Center. The goal of BlueSpace is to research the issues associated with next-generation workspaces in which integrated electronic transducers, displays and network appliances are used to augment personalization and context awareness. Toward this goal, we have constructed a full-scale prototype office and implemented several

Paul Chou; Marco Gruteser; Jennifer Lai; Anthony Levas; Scott McFaddin; Claudio Pinhanez; Marisa Viveros; Danny Wong; Sachiko Yoshihama

2001-01-01

204

Moral Awareness in Business Organizations: Influences of Issue-Related and Social Context Factors  

Microsoft Academic Search

Individuals' awarenessof moral issues is an important first step in the ethicaldecision-making process. Relying on research in social cognition andbusiness ethics, we hypothesized that moral awareness is influenced byissue-related factors (magnitude of consequences of the moral issueand issue framing in moral terms) and social contextrelated factors(competitive context and perceived social consensus that the issue isethically problematic). The hypotheses were tested

Kenneth D. Butterfield; Linda Klebe Trevin; Gary R. Weaver

2000-01-01

205

Towards the semantic and context-aware management of mobile multimedia  

Microsoft Academic Search

Users of mobile devices can nowadays easily create large quantities of mobile multimedia documents tracing significant events\\u000a attended, places visited or, simply, moments of their everyday life. However, they face the challenge of organizing these\\u000a documents in order to facilitate searching through them at a later time and sharing them with other users. We propose using\\u000a context awareness and semantic

Windson Viana; Alina Dia Miron; Bogdan Moisuc; Jérôme Gensel; Marlène Villanova-Oliver; Hervé Martin

2011-01-01

206

An Intelligent Context-Aware Learning System Based on Mobile Augmented Reality  

Microsoft Academic Search

\\u000a Learning content using context-aware mobile technology, whether the content is manual or interactive, is hardly expected to\\u000a arouse learners to interest or immersion because most of real-life environment is discrete from mobile content. For this reason,\\u000a Augmented Reality is used to fix the drawback and to provide learners with an educational environment fit for desirable practice\\u000a of the theory of

Jin-Il Kim; Inn-woo Park; Hee-Hyol Lee

207

CAMAR Tag Framework: Context-Aware Mobile Augmented Reality Tag Framework for Dual-reality Linkage  

Microsoft Academic Search

In this paper, we propose a novel tag framework for sharing information in dual-reality space, which is based on context-aware mobile augmented reality (CAMAR). When a user selects a target object to be tagged onto dual-reality, the proposed framework and procedures create CAMAR Tag with a userpsilas mobile device to be registered in virtual space. CAMAR Tag is able to

Hyejin Kim; Wonwoo Lee; Woontack Woo

2009-01-01

208

Acoustic Environment Classification Based on SMV Speech Codec Parameters for Context-Aware Mobile Phone  

NASA Astrophysics Data System (ADS)

In this letter, an acoustic environment classification algorithm based on the 3GPP2 selectable mode vocoder (SMV) is proposed for context-aware mobile phones. Classification of the acoustic environment is performed based on a Gaussian mixture model (GMM) using coding parameters of the SMV extracted directly from the encoding process of the acoustic input data in the mobile phone. Experimental results show that the proposed environment classification algorithm provides superior performance over a conventional method in various acoustic environments.

Lee, Kye-Hwan; Chang, Joon-Hyuk

209

Military Cultural Awareness: From Anthropology to Application.  

National Technical Information Service (NTIS)

In the mid-1990s, Marine General Anthony Zinni began making the case for the necessity of military cultural awareness as a force multiplier. General Zinni was then reacting to the challenge of resolving tribal conflict in Somalia and considering the poten...

J. W. Jandora

2006-01-01

210

Support for situation awareness in trustworthy ubiquitous computing application software  

Microsoft Academic Search

Abstract Due to the dynamic and ephemeral nature of ubiquitous computing (ubicomp) environments, it is especially important that the application software in ubicomp environments is trustworthy. In order to have trustworthy application software in ubicomp environments, situation-awareness (SAW) in the application software is needed for enforcing flexible security policies and detecting violations of security policies. In this paper, an approach

Stephen S. Yau; Dazhi Huang; Haishan Gong; Yisheng Yao

2006-01-01

211

An Overview of Network-Aware Applications for Mobile Multimedia Delivery  

Microsoft Academic Search

Network-aware Applications is a promising new concept in which applications are aware of network conditions and thus can adapt to the varying environment to achieve acceptable and predictable performance. This paper reviews the current research on network-aware applications, with a focus on their appliance on mobile multimedia applications. First, different frameworks or architectures of network- aware applications are introduced. Research

Jinwei Cao; Dongsong Zhang; Kevin M. Mcneill; Jay F. Nunamaker Jr.

2004-01-01

212

AppAware: serendipity in mobile applications  

Microsoft Academic Search

Most mobile operating systems provide users with an application portal where they can search for applications published by third-party developers. However, finding new apps is not an easy task and requires either to know what to look for or to go through an endless list of applications. In this short paper we present work in progress of a platform that

Andrea Girardello

2010-01-01

213

Prototype of an auto-calibrating, context-aware, hybrid brain-computer interface.  

PubMed

We present the prototype of a context-aware framework that allows users to control smart home devices and to access internet services via a Hybrid BCI system of an auto-calibrating sensorimotor rhythm (SMR) based BCI and another assistive device (Integra Mouse mouth joystick). While there is extensive literature that describes the merit of Hybrid BCIs, auto-calibrating and co-adaptive ERD BCI training paradigms, specialized BCI user interfaces, context-awareness and smart home control, there is up to now, no system that includes all these concepts in one integrated easy-to-use framework that can truly benefit individuals with severe functional disabilities by increasing independence and social inclusion. Here we integrate all these technologies in a prototype framework that does not require expert knowledge or excess time for calibration. In a first pilot-study, 3 healthy volunteers successfully operated the system using input signals from an ERD BCI and an Integra Mouse and reached average positive predictive values (PPV) of 72 and 98% respectively. Based on what we learned here we are planning to improve the system for a test with a larger number of healthy volunteers so we can soon bring the system to benefit individuals with severe functional disability. PMID:23366267

Faller, J; Torrellas, S; Miralles, F; Holzner, C; Kapeller, C; Guger, C; Bund, J; Müller-Putz, G R; Scherer, R

2012-01-01

214

Context-aware sparse decomposition for image denoising and super-resolution.  

PubMed

Image prior models based on sparse and redundant representations are attracting more and more attention in the field of image restoration. The conventional sparsity-based methods enforce sparsity prior on small image patches independently. Unfortunately, these works neglected the contextual information between sparse representations of neighboring image patches. It limits the modeling capability of sparsity-based image prior, especially when the major structural information of the source image is lost in the following serious degradation process. In this paper, we utilize the contextual information of local patches (denoted as context-aware sparsity prior) to enhance the performance of sparsity-based restoration method. In addition, a unified framework based on the markov random fields model is proposed to tune the local prior into a global one to deal with arbitrary size images. An iterative numerical solution is presented to solve the joint problem of model parameters estimation and sparse recovery. Finally, the experimental results on image denoising and super-resolution demonstrate the effectiveness and robustness of the proposed context-aware method. PMID:23221827

Ren, Jie; Liu, Jiaying; Guo, Zongming

2012-12-04

215

Multicore Architecture-aware Scientific Applications  

SciTech Connect

Modern high performance systems are becoming increasingly complex and powerful due to advancements in processor and memory architecture. In order to keep up with this increasing complexity, applications have to be augmented with certain capabilities to fully exploit such systems. These may be at the application level, such as static or dynamic adaptations or at the system level, like having strategies in place to override some of the default operating system polices, the main objective being to improve computational performance of the application. The current work proposes two such capabilites with respect to multi-threaded scientific applications, in particular a large scale physics application computing ab-initio nuclear structure. The first involves using a middleware tool to invoke dynamic adaptations in the application, so as to be able to adjust to the changing computational resource availability at run-time. The second involves a strategy for effective placement of data in main memory, to optimize memory access latencies and bandwidth. These capabilties when included were found to have a significant impact on the application performance, resulting in average speedups of as much as two to four times.

Srinivasa, Avinash

2011-11-28

216

WearNET: A Distributed Multisensor System for Context Aware Wearables  

Microsoft Academic Search

This paper describes a distributed, multi-sensor system architecture designed to provide a wearable computer with a wide range\\u000a of complex context information. Starting from an analysis of useful high level context information we present a top down design\\u000a that focuses on the peculiarities of wearable applications. Thus, our design devotes particular attention to sensor placement,\\u000a system partitioning as well as

Paul Lukowicz; Holger Junker; Mathias Stäger; T. Von Büren; Gerhard Tröster

2002-01-01

217

Context-Aware Resource Management in Multi-Inhabitant Smart Homes: A Nash H-Learning based Approach  

Microsoft Academic Search

A smart home aims at building intelligence automation with a goal to provide its inhabitants with maximum pos- sible comfort, minimize the resource consumption and thus overall cost of maintaining the home. 'Context Awareness' is perhaps the most salient feature of such an intelligent environment. Clearly, an inhabitant's mobility and activ- ities play a significant role in defining his contexts

Nirmalya Roy; Abhishek Roy; Sajal K. Das

2006-01-01

218

MPI Applications on Grids: A Topology Aware Approach  

NASA Astrophysics Data System (ADS)

Porting on grids complex MPI applications involving collective communications requires significant program modification, usually dedicated to a single grid structure. The difficulty comes from the mismatch between programs organizations and grid structures: 1) large grids are hierarchical structures aggregating parallel machines through an interconnection network, decided at runtime and 2) the MPI standard does not currently provide any specific information for topology-aware applications, so almost all MPI applications have been developed following a non-hierarchical and non-flexible vision. In this paper, we propose a generic programming method and a modification of the MPI runtime environment to make MPI applications topology aware. In contrary to previous approaches, topology requirements for the application are given to the grid scheduling system, which exposes the compatible allocated topology to the application.

Coti, Camille; Herault, Thomas; Cappello, Franck

219

Bridging the Gap between Mobile Bridging the Gap between Mobile Bridging the Gap between Mobile Bridging the Gap between Mobile Application Contexts and Semantic Application Contexts and Semantic Application Contexts and Semantic Application Contexts and Semantic  

Microsoft Academic Search

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

Stefan Dietze; Alessio Gugliotta; John Domingue

220

Design of a Middleware and HIML (Human Interaction Markup Language) for Context Aware Services in a Ubiquitous Computing Environment  

Microsoft Academic Search

\\u000a Ubiquitous computing environments consist of a lot of autonomous agents that work together to alter real world space into\\u000a intelligent and interactive environments. Research in context awareness, which is regarded as core technologies of ubiquitous\\u000a computing, offers intellectual services by extracting, interpreting, and using context information and adapts each device’s\\u000a functionality to the current context of use. Many researchers have

Gunhee Kim; Dongkyoo Shin; Dongil Shin

2004-01-01

221

RFID sensor-tags feeding a context-aware rule-based healthcare monitoring system.  

PubMed

Along with the growing of the aging population and the necessity of efficient wellness systems, there is a mounting demand for new technological solutions able to support remote and proactive healthcare. An answer to this need could be provided by the joint use of the emerging Radio Frequency Identification (RFID) technologies and advanced software choices. This paper presents a proposal for a context-aware infrastructure for ubiquitous and pervasive monitoring of heterogeneous healthcare-related scenarios, fed by RFID-based wireless sensors nodes. The software framework is based on a general purpose architecture exploiting three key implementation choices: ontology representation, multi-agent paradigm and rule-based logic. From the hardware point of view, the sensing and gathering of context-data is demanded to a new Enhanced RFID Sensor-Tag. This new device, de facto, makes possible the easy integration between RFID and generic sensors, guaranteeing flexibility and preserving the benefits in terms of simplicity of use and low cost of UHF RFID technology. The system is very efficient and versatile and its customization to new scenarios requires a very reduced effort, substantially limited to the update/extension of the ontology codification. Its effectiveness is demonstrated by reporting both customization effort and performance results obtained from validation in two different healthcare monitoring contexts. PMID:22083369

Catarinucci, Luca; Colella, Riccardo; Esposito, Alessandra; Tarricone, Luciano; Zappatore, Marco

2011-11-15

222

Toward Managing Uncertain Spatial Information for Situational Awareness Applications  

Microsoft Academic Search

Situational awareness (SA) applications monitor the real world and the entities therein to support tasks such as rapid decision making, reasoning, and analysis. Raw input about unfolding events may arrive from variety of sources in the form of sensor data, video streams, human observations, and so on, from which events of interest are extracted. Location is one of the most

Yiming Ma; Dmitri V. Kalashnikov; Sharad Mehrotra

2008-01-01

223

Towards a Secure Application-Semantic Aware Policy Enforcement Architecture  

Microsoft Academic Search

Even though policy enforcement has been studied from dif- ferent angles including notation, negotiation and enforcement, the devel- opment of an application-semantic aware enforcement architecture re- mains an open problem. In this paper we present and discuss the design of such an architecture. As networked and grid computing and web service architectures are gaining ac- ceptance, computer systems are being

Srijith K. Nair; Bruno Crispo; Andrew S. Tanenbaum

2006-01-01

224

TaskMinder: A Context and User-Aware To-do List Management System  

Microsoft Academic Search

We describe the design, functionality, and early-stage evaluation of TaskMinder, a to-do list management application. TaskMinder builds in rich environmental context, including location and user activity, and uses a machine learning algorithm to compare against a user's history to produce an automatic ranking of to-do list items. The application also can suggest tasks to be accomplished given short term time

Brian M. Landry; Rahul Nair; Zach Pousman; Manas Tungare

225

Power-aware dynamic placement of HPC applications  

Microsoft Academic Search

High Performance Computing applications and platforms have been typically designed without regard to power consump- tion. With increased awareness of energy cost, power man- agement is now an issue even for compute-intensive server clusters. In this work, we investigate the use of power manage- ment techniques for high performance applications on mod- ern power-e!cient servers with virtualization support. We consider

Akshat Verma; Puneet Ahuja; Anindya Neogi

2008-01-01

226

Understanding and Using Context  

Microsoft Academic Search

Context is a poorly used source of information in our computing environments. As a result, we have an impoverished understanding of what context is and how it can be used. In this paper, we provide an operational definition of context and discuss the different ways that context can be used by context-aware applications. We also present the Context Toolkit, an

Anind K. Dey

2001-01-01

227

It's all in the game: Towards an affect sensitive and context aware game companion  

Microsoft Academic Search

Robot companions must be able to display social, affective behaviour. As a prerequisite for companionship, the ability to sustain long-term interactions with users requires companions to be endowed with affect recognition abilities. This paper explores application-dependent user states in a naturalistic scenario where an iCat robot plays chess with children. In this scenario, the role of context is investigated for

Ginevra Castellano; I. Leite; A. Pereira; Carlos Martinho; Ana Paiva; Peter W. McOwan

2009-01-01

228

Case Study of Human Computer Interaction Based on RFID and Context-Awareness in Ubiquitous Computing Environments  

Microsoft Academic Search

Context-awareness becomes the key technology in the human computer interaction of ubiquitous computing. The paper discusses\\u000a the characteristic, significance as well as function of the context, and the properties of the human computer interaction\\u000a in the ubiquitous environments where the physical space fuses with the information space. These characteristics bring new\\u000a requirements, that is, mobility, tractability, predictably and personality. To

Ting Zhang; Yuanxin Ouyang; Yang He; Zhang Xiong; Zhenyong Chen

2007-01-01

229

Context-Aware Mobile AR System for Personalization, Selective Sharing, and Interaction of Contents in Ubiquitous Computing Environments  

Microsoft Academic Search

With advances in tracking and increased computing power, mobile AR systems are popular in our daily life. Researchers in mobile\\u000a AR technology have emphasized the technical challenges involved in the limitations imposed from mobility. They did not consider\\u000a context-aware service with user-related information annotation, even if in ubiquitous computing environment, various contexts\\u000a of both a user and an environment can

Youngjung Suh; Youngmin Park; Hyoseok Yoon; Yoonje Chang; Woontack Woo

2007-01-01

230

A Modular Location-Aware Service and Application Platform  

Microsoft Academic Search

Location-Aware applications for supporting the mobile user as well as logistics of movable objects have proven significant relevance for future telecommunication and computing. Based on the state-of-the-art analysis, the paper evaluates the outcome of the labs and the require- ments of commercial usage. A system architecture is proposed from the technical per- spective for localisation, information, communication, and management. The

Tom Pfeifer; Radu Popescu-zeletin

1999-01-01

231

Context Inference for Mobile Applications in the UPCASE Project  

Microsoft Academic Search

The growing processing capabilities of mobile devices cou- pled with portable and wearable sensors have enabled the development of context-aware services tailored to the user environment and its daily activities. The problem of determining the user context at each particu- lar point in time is one of the main challenges in this area. In this paper, we describe the approach

André C. Santos; Luís Tarrataca; João M. P. Cardoso; Diogo R. Ferreira; Pedro C. Diniz; Paulo Chainho

2009-01-01

232

Review of Self-Awareness and Its Clinical Application in Stroke Rehabilitation  

ERIC Educational Resources Information Center

The objectives of this study were (i) to explore, following a literature review, the concepts of self-awareness, its assessment, and intervention for self-awareness deficits, as well as its clinical significance in stroke rehabilitation; and (ii) to apply the concepts of self-awareness in the context of a rehabilitation program. The search was…

Leung, Daniel P. K.; Liu, Karen P. Y.

2011-01-01

233

Review of Self-Awareness and Its Clinical Application in Stroke Rehabilitation  

ERIC Educational Resources Information Center

|The objectives of this study were (i) to explore, following a literature review, the concepts of self-awareness, its assessment, and intervention for self-awareness deficits, as well as its clinical significance in stroke rehabilitation; and (ii) to apply the concepts of self-awareness in the context of a rehabilitation program. The search was…

Leung, Daniel P. K.; Liu, Karen P. Y.

2011-01-01

234

An Agent-Based Architecture for Supply Chain Finance Cooperative Context-Aware Distributed Data Mining Systems  

Microsoft Academic Search

The unlimited growth of supply chain finance data will inevitably lead to a situation in which it is increasingly difficult to access the desired information. Supply chain finance is often necessary to analyze large data sets, maintained over geographically bank, supplier and customer distributed sites by using cooperative context-aware distributed data mining (DDM) systems. The study of the existing approaches

Xiang Liu

2008-01-01

235

An Investigation of Attitudes of Students and Teachers about Participating in a Context-Aware Ubiquitous Learning Activity  

ERIC Educational Resources Information Center

|In recent years, digital learning has been converting from e-learning to m-learning because of the significant growth of wireless and mobile computing technologies. Students can learn any time and any where with mobile devices. Consequently, context-aware ubiquitous learning (u-learning) is emerging as a new research area. It integrates wireless,…

Shih, Ju-Ling; Chu, Hui-Chun; Hwang, Gwo-Jen; Kinshuk

2011-01-01

236

A Decision-Tree-Oriented Guidance Mechanism for Conducting Nature Science Observation Activities in a Context-Aware Ubiquitous Learning  

ERIC Educational Resources Information Center

|A context-aware ubiquitous learning environment is an authentic learning environment with personalized digital supports. While showing the potential of applying such a learning environment, researchers have also indicated the challenges of providing adaptive and dynamic support to individual students. In this paper, a decision-tree-oriented…

Hwang, Gwo-Jen; Chu, Hui-Chun; Shih, Ju-Ling; Huang, Shu-Hsien; Tsai, Chin-Chung

2010-01-01

237

Semantic Classification of Diseases in Discharge Summaries Using a Context-aware Rule-based Classifier  

PubMed Central

Objective Automated and disease-specific classification of textual clinical discharge summaries is of great importance in human life science, as it helps physicians to make medical studies by providing statistically relevant data for analysis. This can be further facilitated if, at the labeling of discharge summaries, semantic labels are also extracted from text, such as whether a given disease is present, absent, questionable in a patient, or is unmentioned in the document. The authors present a classification technique that successfully solves the semantic classification task. Design The authors introduce a context-aware rule-based semantic classification technique for use on clinical discharge summaries. The classification is performed in subsequent steps. First, some misleading parts are removed from the text; then the text is partitioned into positive, negative, and uncertain context segments, then a sequence of binary classifiers is applied to assign the appropriate semantic labels. Measurement For evaluation the authors used the documents of the i2b2 Obesity Challenge and adopted its evaluation measures: F1-macro and F1-micro for measurements. Results On the two subtasks of the Obesity Challenge (textual and intuitive classification) the system performed very well, and achieved a F1-macro = 0.80 for the textual and F1-macro = 0.67 for the intuitive tasks, and obtained second place at the textual and first place at the intuitive subtasks of the challenge. Conclusions The authors show in the paper that a simple rule-based classifier can tackle the semantic classification task more successfully than machine learning techniques, if the training data are limited and some semantic labels are very sparse.

Solt, Illes; Tikk, Domonkos; Gal, Viktor; Kardkovacs, Zsolt T.

2009-01-01

238

Speech prosody and developmental dyslexia: Reduced phonological awareness in the context of intact phonological representations  

Microsoft Academic Search

Recent research indicates that awareness of the rhythmic patterns present in spoken language (i.e., prosody) may be an important and relatively overlooked predictor of reading ability. Two studies investigated the prosodic processing abilities of skilled adult readers and adults with developmental dyslexia. Participants with dyslexia showed reduced awareness of lexical and metrical stress and these skills were found to be

Ian R. Mundy; Julia M. Carroll

2012-01-01

239

ERMHAN: A Context-Aware Service Platform to Support Continuous Care Networks for Home-Based Assistance  

PubMed Central

Continuous care models for chronic diseases pose several technology-oriented challenges for home-based continuous care, where assistance services rely on a close collaboration among different stakeholders such as health operators, patient relatives, and social community members. Here we describe Emilia Romagna Mobile Health Assistance Network (ERMHAN) a multichannel context-aware service platform designed to support care networks in cooperating and sharing information with the goal of improving patient quality of life. In order to meet extensibility and flexibility requirements, this platform has been developed through ontology-based context-aware computing and a service oriented approach. We also provide some preliminary results of performance analysis and user survey activity.

Paganelli, Federica; Spinicci, Emilio; Giuli, Dino

2008-01-01

240

Energy-aware, power-aware, and Green Computing for large distributed systems and applications  

Microsoft Academic Search

Green Computing is one of the hottest subjects these days for people in industry, academia and even for businesses. The major benefits of using Green Computing (including energy-aware, and power-aware) is not perfectly clear in terms of monetary cost, performance, and the amount of pollutants such as carbon footprint. This panel will assess the state of the art in Green

Frédéric Giroire; Frédéric Guinand; Laurent Lefèvre; Jordi Torres

2010-01-01

241

Context management platform for tourism applications.  

PubMed

The notion of context has been widely studied and there are several authors that have proposed different definitions of context. However, context has not been widely studied in the framework of human mobility and the notion of context has been imported directly from other computing fields without specifically addressing the tourism domain requirements. In order to store and manage context information a context data model and a context management platform are needed. Ontologies have been widely used in context modelling, but many of them are designed to be applied in general ubiquitous computing environments, do not contain specific concepts related to the tourism domain or some approaches do not contain enough concepts to represent context information related to the visitor on the move. That is why we propose a new approach to provide a better solution to model context data in tourism environments, adding more value to our solution reusing data about tourist resources from an Open Data repository and publishing it as Linked Data. We also propose the architecture for a context information management platform based on this context data model. PMID:23797739

Buján, David; Martín, David; Torices, Ortzi; López-de-Ipiña, Diego; Lamsfus, Carlos; Abaitua, Joseba; Alzua-Sorzabal, Aurkene

2013-06-24

242

Context Management Platform for Tourism Applications  

PubMed Central

The notion of context has been widely studied and there are several authors that have proposed different definitions of context. However, context has not been widely studied in the framework of human mobility and the notion of context has been imported directly from other computing fields without specifically addressing the tourism domain requirements. In order to store and manage context information a context data model and a context management platform are needed. Ontologies have been widely used in context modelling, but many of them are designed to be applied in general ubiquitous computing environments, do not contain specific concepts related to the tourism domain or some approaches do not contain enough concepts to represent context information related to the visitor on the move. That is why we propose a new approach to provide a better solution to model context data in tourism environments, adding more value to our solution reusing data about tourist resources from an Open Data repository and publishing it as Linked Data. We also propose the architecture for a context information management platform based on this context data model.

Bujan, David; Martin, David; Torices, Ortzi; Lopez-de-Ipina, Diego; Lamsfus, Carlos; Abaitua, Joseba; Alzua-Sorzabal, Aurkene

2013-01-01

243

Representing Context in an Agent Architecture for Context-Based Decision Making  

Microsoft Academic Search

Ambient intelligence involves the convergence of several computing areas: ubiquitous computing, intelligent systems and context-awareness. Developing context-aware applications needs facilities for recognizing and representing context, reasoning on it and adapting to it accordingly. In what concerns context representation, the newest and most challenging representation is the ontological one. The problem is that current ontologies for context do not provide a

Oana Bucur; Philippe Beaune; Olivier Boissier

2005-01-01

244

The Role of Connectivity in Supporting Context-Sensitive Applications  

Microsoft Academic Search

This paper considers the role of network connectivity in supporting context-sensitive applications. A range of context-sensitive\\u000a applications are analysed with respect to connectivity. Following this analysis a design space is constructed which enables\\u000a the positioning of context-sensitive applications depending on their reliance on network connectivity and their reliance on\\u000a local storage. Further consideration of the role of connectivity is achieved

Keith Cheverst; Nigel Davies; Keith Mitchell; Adrian Friday

1999-01-01

245

Context-Aware Fuzzy ArtMap for Received Signal Strength Based Location Systems  

Microsoft Academic Search

Received signal strength (RSS) based location systems are potential candidates to enable indoor location aware services due to pervasively available wireless local area networks and hand held devices. Intrinsically RSS based positioning is a multi-class pattern recognition problem. Previous researches have shown that Visibility Matrix based approach of modular classifiers improves location accuracy but costs longer periods of training and

Uzair Ahmad; Andrey Gavrilov; Sungyoung Lee; Young-koo Lee

2007-01-01

246

Effects of a context awareness tool on students' cognition of their team-mates learning time in a distance learning project activity  

Microsoft Academic Search

Aiming to understand and enhance metacognition in Computer Supported Collaborative Learning (CSCL), we considered time management as one of students' major challenges in CSCL. In collaborative activities, students need to know and regulate their individual and collective time being aware about their own and their team-mates expected availabilities. Aiming to understand and enhance time awareness in distance learning context we

Margarida Romero; André Tricot; Allées A. Machado

247

Large-scale context-aware system in smart spaces: Issues and challenges  

Microsoft Academic Search

Smart spaces are characterised by availability of information from digital artifacts embedded in the environment and network services that unobtrusively enhance our interaction with the digital world. User and environment context plays a vital role in deciding the usability of information services available in a smart space. Making this context available and coordinating it across the network, geographic and administrative

Saad Liaquat Kiani; Boris Moltchanov; Michael Knappmeyer; Nigel Baker

2011-01-01

248

Team Awareness, Problem Drinking, and Drinking Climate: Workplace Social Health Promotion in a Policy Context  

PubMed Central

Purpose (1) To determine the effectiveness of classroom health promotion/prevention training designed to improve work climate and alcohol outcomes; (2) to assess whether such training contributes to improvements in problem drinking beyond standard workplace alcohol policies. Design A cross-sectional survey assessed employee problem drinking across three time periods. This was followed by a prevention intervention study; work groups were randomly assigned to an 8-hour training course in workplace social health promotion (Team Awareness), a 4-hour informational training course, or a control group. Surveys were administered 2 to 4 weeks before and after training and 6 months after posttest. Setting and Subjects Employees were surveyed from work departments in a large municipality of 3000 workers at three points in time (year, sample, and response rates are shown): (1) 1992, n = 1081, 95%; (2) 1995, n = 856, 97%; and (3) 1999, n = 587, 73%. Employees in the 1999 survey were recruited from safety-sensitive departments and were randomly assigned to receive the psychosocial (n = 201), informational (n = 192), or control (n = 194) condition. Intervention The psychosocial program (Team Awareness) provided skills training in peer referral, team building, and stress management. Informational training used a didactic review of policy, employee assistance, and drug testing. Measures Self-reports measured alcohol use (frequency, drunkenness, hangovers, and problems) and work drinking climate (enabling, responsiveness, drinking norms, stigma, and drink with coworkers). Results Employees receiving Team Awareness reduced problem drinking from 20% to 11% and working with or missing work because of a hangover from 16% to 6%. Information-trained workers also reduced problem drinking from 18% to 10%. These rates of change contrast with changes in problem drinking seen from 1992 (24%) to 1999 (17%). Team Awareness improvements differed significantly from control subjects, which showed no change at 13%. Employees receiving Team Awareness also showed significant improvements in drinking climate. For example, scores on the measure of coworker enabling decreased from pretest (mean = 2.19) to posttest (mean = 2.05) and follow up (mean = 1.94). Posttest measures of drinking climate also predicted alcohol outcomes at 6 months. Conclusion Employers should consider the use of prevention programming as an enhancement to standard drug-free workplace efforts. Team Awareness training targets work group social health, aligns with employee assistance efforts, and contributes to reductions in problem drinking.

Bennett, Joel B.; Patterson, Camille R.; Reynolds, G. Shawn; Wiitala, Wyndy L.; Lehman, Wayne E. K.

2011-01-01

249

Context-Aware Hierarchy k-Depth Estimation and Energy-Efficient Clustering in Ad-hoc Network  

NASA Astrophysics Data System (ADS)

Ad-hoc Network needs an efficient node management because the wireless network has energy constraints. Previously proposed a hierarchical routing protocol reduce the energy consumption and prolong the network lifetime. Further, there is a deficiency conventional works about the energy efficient depth of cluster associated with the overhead. In this paper, we propose a novel top-down method clustered hierarchy, CACHE(Context-aware Clustering Hierarchy and Energy-Efficient). The proposed analysis could estimate the optimum k-depth of hierarchy architecture in clustering protocols.

Mun, Chang-Min; Kim, Young-Hwan; Lee, Kang-Whan

250

A Novel Approach for Creating Activity-Aware Applications in a Hospital Environment  

NASA Astrophysics Data System (ADS)

Context-aware and activity-aware computing has been proposed as a way to adapt the computer to the user’s ongoing activity. However, deductively moving from physical context - like location - to establishing human activity has proved difficult. This paper proposes a novel approach to activity-aware computing. Instead of inferring activities, this approach enables the user to explicitly model their activity, and then use sensor-based events to create, manage, and use these computational activities adjusted to a specific context. This approach was crafted through a user-centered design process in collaboration with a hospital department. We propose three strategies for activity-awareness: context-based activity matching, context-based activity creation, and context-based activity adaptation. We present the implementation of these strategies and present an experimental evaluation of them. The experiments demonstrate that rather than considering context as information, context can be a relational property that links ’real-world activities’ with their ’computational activities’.

Bardram, Jakob E.

251

Context-Aware Notifications: A Healthcare System for a Nursing Home  

Microsoft Academic Search

\\u000a Taking care of an elder with cognitive impairment is not an easy task. The caregiver needs to be aware of what surrounds the\\u000a elder at all times to be able to prevent, avoid or manage any event that may affect the elder’s quality of life. Based on\\u000a an observational study to improve our understanding regarding the care practices of a

Sandra Nava-Muñoz; Alberto L. Morán; Victoria Meza-Kubo

252

An intelligent semantic e-learning framework using context-aware Semantic Web technologies  

Microsoft Academic Search

Recent developments of e-learning specifications such as Learning Object Metadata (LOM), Sharable Content Object Reference Model (SCORM), Learning Design and other pedagogy research in semantic e-learning have shown a trend of applying innovative computational techniques, especially Semantic Web technologies, to promote existing content-focused learning services to semantic-aware and personalised learning services. To facilitate this transforming process, this paper presents a

Weihong Huang; David Webster; Dawn Wood; Tanko Ishaya

2006-01-01

253

A Framework of Context-Aware Object Recognition for Smart Home  

Microsoft Academic Search

Services for smart home share a fundamental problem—object recognition, which is challenging because of complex background\\u000a and appearance variation of object. In this paper we develop a framework of object recognition for smart home integrating\\u000a SIFT (scale invariant feature transform) and context knowledge of home environment. The context knowledge includes the structure\\u000a and settings of a smart home, knowledge of

Xinguo Yu; Bin Xu; Weimin Huang; Boon Fong Chew; Junfeng Dai

2007-01-01

254

An Operating-System-Level Framework for Providing Application-Aware Reliability  

Microsoft Academic Search

Operating systems enable collecting and extracting rich information on application execution characteristics, including program counter traces, memory access patterns, and operating-system-generated signals. This information can be exploited to design highly efficient, application-aware reliability mechanisms that are transparent to applications. This paper describes the Reliability MicroKernel framework (RMK), a loadable kernel module for providing application-aware reliability and dynamically configuring reliability mechanisms

Long Wang; Zbigniew Kalbarczyk; Weining Gu; Ravi Iyer

255

Overseer: A Mobile Context-Aware Collaboration and Task Management System for Disaster Response  

Microsoft Academic Search

Efficient collaboration and task management is challenging in distributed, dynamically-formed organizations such as ad hoc disaster response teams. Ineffective collaboration may result in poor performance and possible loss of life. In this paper, we present an open multi-agent system, called Overseer, that leverages context information in a mobile setting to facilitate collaboration and task allocation for disaster response. We describe

Faisal B. Luqman; Martin L. Griss

2010-01-01

256

Language Learning Experience in School Context and Metacognitive Awareness of Multilingual Children  

ERIC Educational Resources Information Center

|What is the influence of a language learning experience (LLE) in a school context on the metacognitive development of children? To answer that question, we presented 54 multilingual preschoolers with two movie clips and examined their reactions to an exolingual situation of communication. These preschoolers were aged four and a half to six and a…

Le Pichon Vorstman, Emmanuelle; De Swart, Henriette; Ceginskas, Viktorija; Van Den Bergh, Huub

2009-01-01

257

Adaptive Multimedia Content Delivery for Context-Aware U-Learning  

ERIC Educational Resources Information Center

|Empowered by mobile computing, teachers and students can benefit from computing in more scenarios beyond the traditional computer classroom. But because of the much diversity of device specification, learning contents and mobile context existing today, the learners get a bad learning experience (e.g. rich contents cannot be displayed correctly)…

Zhao, Xinyou; Okamoto, Toshio

2011-01-01

258

Proactive medication assistances based on spatiotemporal context awareness of aged persons  

Microsoft Academic Search

In this paper, we developed a system that could assist appropriate activities for medication adherence of the elderly. It employs a proactive knowledge which is represented as templates predefined for their medication activities. The knowledge-based assistance depends on the contexts considerably, which the system can recognize by continuously monitoring the current position and the time-schedule for their medications. The monitoring

Jae-Hun Choi; Myung-Eun Lim; Dae-Hee Kim; Soo-Jun Park

2008-01-01

259

Towards Context-Aware Mobile Web 2.0 Service Architecture  

Microsoft Academic Search

The emergence of new lightweight Web technologies and the development of mobile devices leads to a situation, where the users can consume the same Web services regardless of the place, time and device. Mobile devices are equipped with networking capabilities and sensors that provide versatile context and user-community information. This information enhances the user experience as it can be used

Timo Koskela; Nonna Kostamo; Otso Kassinen; Juuso Ohtonen; Mika Ylianttila

2007-01-01

260

Towards context-aware personalization and a broad perspective on the semantics of news articles  

Microsoft Academic Search

We analyze preferences and the reading flow of users of a popular Austrian online newspaper. Unlike traditional news filtering approaches, we postulate that a user's preference for particular articles depends not only on the topic and on propositional contents, but also on the user's current context and on more subtle attributes. Our assumption is motivated by the observation that many

Jeremy Jancsary; Friedrich Neubarth; Harald Trost

2010-01-01

261

Review of self-awareness and its clinical application in stroke rehabilitation.  

PubMed

The objectives of this study were (i) to explore, following a literature review, the concepts of self-awareness, its assessment, and intervention for self-awareness deficits, as well as its clinical significance in stroke rehabilitation; and (ii) to apply the concepts of self-awareness in the context of a rehabilitation program. The search was conducted by the electronic databases Web of Science, Science Direct, MEDLINE, and PsychcInfo. A systematic literature search of publications written in English between 1980 and 2010 was conducted using the keywords, self-awareness or self-regulation. The search was limited to the following keywords: stroke, deficits, assessment, intervention, and rehabilitation. Two important conceptual models, namely, the Pyramid Model of Self-Awareness and the Dynamic Comprehensive Model of Awareness, were reviewed. Suggestions were made to the constraint-induced movement therapy for enhancement of both assessment and treatment of self-awareness deficits. In conclusion, self-awareness is essential for the success of rehabilitation. It is hoped that more studies can be conducted on the effectiveness of awareness enhancement programs incorporated in on-going therapies can be conducted, so that the evidence base can be further built up in this evolving area of practice. PMID:21694602

Leung, Daniel P K; Liu, Karen P Y

2011-09-01

262

A Unifying Perspective on Context-Aware Evaluation and Management of Heterogeneous Wireless Connectivity  

Microsoft Academic Search

The growing market of wireless devices with multi- ple connectivity technologies, e.g., Wi-Fi, Bluetooth, and UMTS, is pushing toward the necessity of seamless autonomic selection of the proper connectivity network at any time. That selection should be context-dependent and consider several elements, at different abstraction layers, from bandwidth requirements to network congestion, from connectivity costs to user preferences. As a

Paolo Bellavista; Antonio Corradi; Carlo Giannelli

2011-01-01

263

Towards Dynamic Context Discovery and Composition  

Microsoft Academic Search

Context-awareness has been identified as a key characteristic for pervasive computing systems. As a variety of context-aware environments begin to flourish, pervasive appli- cations shall have to interact different environments well. In this paper we propose extensions to the Strathclyde Context Infrastructure that gives context-aware applications the potential to adapt to unfamiliar environments transparently. We present a vision of a

Graham Thomson; Sotirios Terzis; Paddy Nixon

2003-01-01

264

Operation Prediction for Context-Aware User Interfaces of Mobile Phones  

Microsoft Academic Search

Nowadays mobile phones are multifunctional devices that provide us with various useful applications and services anytime and anywhere. However, people are sometimes unable to access an appropriate application due to the complexity and depth of the menu structure. This paper focuses on a feasibility study of operation prediction using observable attributes to realize self-optimization functionality in the mobile phones that

Daisuke Kamisaka; Shigeki Muramatsu; Hiroyuki Yokoyama; Takeshi Iwamoto

2009-01-01

265

Context-aware mobile health monitoring: Evaluation of different pattern recognition methods for classification of physical activity  

Microsoft Academic Search

There are various applications of physical activity monitoring for medical purposes, such as therapeutic rehabilitation, fitness enhancement or the use of physical activity as context information for evaluation of other vital data. Physical activity can be estimated using acceleration sensor-systems fixed on a person's body. By means of pattern recognition methods, it is possible to identify with certain accuracy which

Luciana C. Jatoba; Ulrich Grossmann; Chistophe Kunze; Jorg Ottenbacher; Wilhelm Stork

2008-01-01

266

Social Email: A Framework and Application for More Socially-Aware Communications  

NASA Astrophysics Data System (ADS)

As online social networks (OSN) attempt to mimic real life social networks, we have made progress towards using OSNs to provide us with data to allow for richer and more robust online communications. In this paper, we present a novel approach towards socially-aware email. Currently, email provides too little control to the recipient. Our approach, dubbed SoEmail, provides social context to messages using an OSN's underlying social graph. This not only gives the recipient control over who can message her, but it also provides her with an understanding of where the message originated from, socially. Furthermore, users who do not wish to use the built-in social aspect of SoEmail, can send and receive emails without any changes to their behavior. The modifications we made to the email application to provide this social context are not invasive and can be easily ignored by any existing email client. We built SoEmail on top of an existing framework, known as Davis Social Links, which allows SoEmail to be completely agnostic about the underlying OSN. We created a web-based, standards-based web client for SoEmail using Facebook and Gmail as the underlying systems which has been released for public use and has had a good adoption rate.

Tran, Thomas; Rowe, Jeff; Wu, S. Felix

267

CAESAR: A Context-Aware, Social Recommender System for Low-End Mobile Devices  

Microsoft Academic Search

Mobile-enabled social networks applications are becoming increasingly popular. Most of the current social network applications have been designed for high-end mobile devices, and they rely upon features such as GPS, capabilities of the World Wide Web, and rich media support. However, a significant fraction of mobile user base, especially in the developing world, own low-end devices that are only capable

Lakshmish Ramaswamy; P. Deepak; Ramana Polavarapu; Kutila Gunasekera; Dinesh Garg; Karthik Visweswariah; Shivkumar Kalyanaraman

2009-01-01

268

Awareness of Biotechnological Application: A Study among University Geography Students  

ERIC Educational Resources Information Center

|The aim of this study is to measure the differences of university geography students about biotechnology. Therefore an awareness scale was developed by the researcher. 102 students from six different universities and their academic levels were included in the survey. The findings of the survey were evaluated both descriptively and statistically.…

Ozel, Ali; Terzi, Irfan; Ozel, Emine

2009-01-01

269

A context-aware and Intelligent Dynamic Channel Selection scheme for cognitive radio networks  

Microsoft Academic Search

The tremendous growth in ubiquitous low-cost wireless applications that utilize the unlicensed spectrum bands has laid increasing stress on the limited and scarce radio spectrum resources. Given that the licensed or Primary Users (PUs) are oblivious to the presence of unlicensed or Secondary Users (SUs), Cognitive Radio (CR) is a new paradigm in wireless communication that allows the SUs to

Kok-Lim Alvin Yau; Peter Komisarczuk; Paul D. Teal

2009-01-01

270

A Context-Aware Paradigm for Information Discovery and Dissemination in Mobile Environments  

ERIC Educational Resources Information Center

The increasing power and ubiquity of mobile wireless devices is enabling real-time information delivery for many diverse applications. A crucial question is how to allocate finite network resources efficiently and fairly despite the uncertainty common in highly dynamic mobile ad hoc networks. We propose a set of routing protocols, Self-Balancing…

Lundquist, Doug

2011-01-01

271

A Context-Aware Paradigm for Information Discovery and Dissemination in Mobile Environments  

ERIC Educational Resources Information Center

|The increasing power and ubiquity of mobile wireless devices is enabling real-time information delivery for many diverse applications. A crucial question is how to allocate finite network resources efficiently and fairly despite the uncertainty common in highly dynamic mobile ad hoc networks. We propose a set of routing protocols, Self-Balancing…

Lundquist, Doug

2011-01-01

272

VOLARE: context-aware adaptive cloud service discovery for mobile systems  

Microsoft Academic Search

With the recent widespread use of smart mobile devices, as well as the increasing availability of fast and reliable wireless Internet connections for mobile devices, there is increased interest in mobile applications where the majority of the processing occurs on the server side. The flexibility, stability and scalability offered by cloud services make them an ideal architecture to use in

Panagiotis Papakos; Licia Capra; David S. Rosenblum

2010-01-01

273

Context-aware visual analysis of elderly activity in a cluttered home environment  

NASA Astrophysics Data System (ADS)

This paper presents a semi-supervised methodology for automatic recognition and classification of elderly activity in a cluttered real home environment. The proposed mechanism recognizes elderly activities by using a semantic model of the scene under visual surveillance. We also illustrate the use of trajectory data for unsupervised learning of this scene context model. The model learning process does not involve any supervised feature selection and does not require any prior knowledge about the scene. The learned model in turn de-fines the activity and inactivity zones in the scene. An activity zone further contains block-level reference information, which is used to generate features for semi-supervised classification using transductive support vector machines. We used very few labeled examples for initial training. Knowledge of activity and inactivity zones improves the activity analysis process in realistic scenarios significantly. Experiments on real-life videos have validated our approach: we are able to achieve more than 90% accuracy for two diverse types of datasets.

Shoaib, Muhammad; Dragon, Ralf; Ostermann, Joern

2011-12-01

274

Cortina: Collaborative context-aware indoor positioning employing RSS and RToF techniques  

Microsoft Academic Search

Cortina is an energy-efficient indoor localization system, which leverages a wireless sensor network to support navigation and tracking applications. To improve the localization performance, we develop a hybrid ranging system, which incor- porate both RSS and RToF-based techniques. To overcome ef- fects from indoor multipath, we design and implement algo- rithms to take into account various contextual information. We evaluated

Zheng Sun; Rick Farley; Telis Kaleas; Judy Ellis; Kiran Chikkappa

2011-01-01

275

MOPET: A context-aware and user-adaptive wearable system for fitness training  

Microsoft Academic Search

Abstract Objective: Cardiovascular disease, obesity, and lack of physical fitness are increas- ingly common and negatively affect people’s health, requiring medical assistance and decreasing people’s wellness and productivity. In the last years, researchers as well as companies have been increasingly investigating wearable devices for fitness applications with the aim of improving user’s health, in terms of cardiovascular benefits, loss of

Fabio Buttussi; Luca Chittaro

2008-01-01

276

Conflict-Aware Scheduling for Dynamic Content Applications  

Microsoft Academic Search

We present a new lazy replication technique, suitable for scaling the back-end database of a dynamic content site using a cluster of commodity computers. Our tech- nique, called conflict-aware scheduling, provides both throughput scaling and 1-copy serializability. It has generally been believed that this combination is hard to achieve through replication because of the growth of the number of conflicts.

Cristiana Amza; Alan L. Cox; Willy Zwaenepoel

2003-01-01

277

Engineering Mobile Agent Applications via Context-Dependent Coordination  

Microsoft Academic Search

The design and development of Internet applications requiring dynamic and possibly mobile access to Internet resources can take advantage of an approach based on autonomous mobile agents. However, mobility introduces peculiar issues related to the modeling and management of the agents' coordination activities. This paper introduces context-dependent coordination as a framework for the design and development of Internet applications based

Giacomo Cabri; Letizia Leonardi; Franco Zambonelli

2002-01-01

278

Application of EMSs in a hotel context: A case study  

Microsoft Academic Search

In the last decade, hotel companies have become increasingly interested in the application of environmental management systems (EMSs). However, research on the effectiveness of EMSs in the hotel industry has been sparse. This study aims to address this research gap by exploring and evaluating the application of EMSs in a hotel context. Various approaches to EMSs are identified in the

Eric S. W. Chan; Rebecca Hawkins

279

SERENITY Aware System Development Process  

NASA Astrophysics Data System (ADS)

Traditionally, security patterns have successfully been used to describe security and dependability. In the SERENITY Project the notion of security and dependability (S&D) pattern has been extended to exact specifications of re-usable security mechanisms for Ambient Intelligence (AmI) systems. These S&D Patterns include information on the security properties satisfied by the solution and on the context conditions to be fulfilled. This chapter presents the development of applications supported by SERENITY. In the context of SERENITY we refer to these applications as Serenity-aware applications. Firstly, this chapter presents the Serenity-aware application design using S&D Artefacts. Secondly, it proposes a Java Application Programming Interface (API) to be used in the application development. And, finally, it introduces the development of an example Serenity-aware application.

Serrano, Daniel; Maña, Antonio; Llarena, Rafael; Crespo, Beatriz Gallego-Nicasio; Li, Keqin

280

A Context Lifecycle for Web-Based Context Management Services  

Microsoft Academic Search

During the development of context aware applications a context management component must traditionally be created. This task\\u000a requires specialist context lifecycle management expertise and hence can be a significant deterrent to application development.\\u000a It also removes the developers focus from differentiation of their application to an oft repeated development task. This issue\\u000a can be addressed by encapsulating the context management

Gearoid Hynes; Vinny Reynolds; Manfred Hauswirth

2009-01-01

281

Levels of emotional awareness: a cognitive-developmental theory and its application to psychopathology.  

PubMed

The authors present a cognitive-developmental theory of emotional awareness that creates a bridge between normal and abnormal emotional states. Their primary thesis is that emotional awareness is a type of cognitive processing which undergoes five levels of structural transformation along a cognitive-developmental sequence derived from an integration of the theories of Piaget and Werner. The five levels of structural transformation are awareness of bodily sensations, the body in action, individual feelings, blends of feelings, and blends of blends of feelings. The authors suggest applications of this model to current unresolved problems in psychiatric theory, research, and practice. PMID:3812780

Lane, R D; Schwartz, G E

1987-02-01

282

Rapid prototyping of smart garments for activity-aware applications  

Microsoft Academic Search

Continuous miniaturization of electronics and sensing elements stimulate the evolution of novel unobtrusively inte- grated smart garments that sense their environment and provide personalized assistance to its wearer. The development of smart garments requires robust integration techniques for electronics and textiles in one common system. Furthermore, recognition algorithms are needed to derive information on the wearer's activity and context within

Holger Harms; Oliver Amft; Daniel Roggen; Gerhard Tröster

2009-01-01

283

AppAware: which mobile applications are hot?  

Microsoft Academic Search

Today most mobile operating systems provide users with an application portal where they can search for applications published by third-party developers. However, finding new apps is not an easy task and requires either to know what to look for or to go through an endless list of applications. In this paper we present work in progress of a platform that

Andrea Girardello; Florian Michahelles

2010-01-01

284

An ontology-based system for context-aware and configurable services to support home-based continuous care.  

PubMed

Continuous care models for chronic diseases pose several technology-oriented challenges for home-based care, where assistance services rely on a close collaboration among different stakeholders, such as health operators, patient relatives, and social community members. This paper describes an ontology-based context model and a related context management system providing a configurable and extensible service-oriented framework to ease the development of applications for monitoring and handling patient chronic conditions. The system has been developed in a prototypal version, and integrated with a service platform for supporting operators of home-based care networks in cooperating and sharing patient-related information and coordinating mutual interventions for handling critical and alarm situations. Finally, we discuss experimentation results and possible further research directions. PMID:21075729

Paganelli, Federica; Giuli, Dino

2010-11-11

285

Defining and Modeling Context in a Multi-Agent Systems Architecture for Decision-Making  

Microsoft Academic Search

Ambient intelligence involves the convergence of several computing areas: ubiquitous computing, intelligent systems and context-awareness. Developing context-aware applications needs facilities for recognizing and representing context, reasoning on it and adapting to it accordingly. In what concerns context representation, the newest and most challenging representation is the ontological one. The problem is that current ontologies for context do not provide a

Oana Bucur; Philippe Beaune; Olivier Boissier

286

Application Transformations for Energy and Performance-Aware Device Management  

Microsoft Academic Search

Energy conservation without performance degradation is an important goal for battery-operated computers, such as lap-tops and hand-held assistants. In this paper we determine the potential benefits of application-supported device management for optimizing energy and performance. In particular, we consider application transformations that increasedevice idle times and inform the operating system about the length of each upcoming period of idleness. We

Taliver Heath; Eduardo Pinheiro; Jerry Hom; Ulrich Kremer; Ricardo Bianchini

2002-01-01

287

Implementations of the HL7 Context-Aware Knowledge Retrieval ("Infobutton") Standard: Challenges, Strengths, Limitations, and Uptake  

PubMed Central

To support clinical decision-making,computerized information retrieval tools known as “infobuttons” deliver contextually-relevant knowledge resources intoclinical information systems.The Health Level Seven International(HL7)Context-Aware Knowledge Retrieval (Infobutton) Standard specifies a standard mechanism to enable infobuttons on a large scale. Objective To examine the experience of organizations in the course of implementing the HL7 Infobutton Standard. Method Cross-sectionalonline survey and in-depth phone interviews. Results A total of 17 organizations participated in the study.Analysis of the in-depth interviews revealed 20 recurrent themes.Implementers underscored the benefits, simplicity, and flexibility of the HL7 Infobutton Standard. Yet, participants voiced the need for easier access to standard specifications and improved guidance to beginners. Implementers predicted that the Infobutton Standard will be widely or at least fairly well adopted in the next five years, but uptake will dependlargely on adoption among electronic health record (EHR) vendors. To accelerate EHR adoption of the Infobutton Standard,implementers recommended HL7-compliant infobutton capabilities to be included in the United States Meaningful Use Certification Criteria EHR systems. Limitations Opinions and predictions should be interpreted with caution, since all the participant organizations have successfully implemented the Standard and overhalf of the organizations were actively engaged in the development of the Standard. Conclusion Overall, implementers reported a very positive experience with the HL7 Infobutton Standard.Despite indications of increasing uptake, measures should be taken to stimulate adoption of the Infobutton Standard among EHR vendors. Widespread adoption of the Infobutton standard has the potential to bring contextually relevant clinical decision support content into the healthcare provider workflow.

Del Fiol, Guilherme; Huser, Vojtech; Strasberg, Howard R; Maviglia, Saverio M; Curtis, Clayton; Cimino, James J

2012-01-01

288

Process-aware continuation management in web applications  

Microsoft Academic Search

Web applications are subject to an interaction challenge not found in other user interfaces: In addition to the widgets that web pages are built of, browsers provide further navigation features such as the Back and Forward buttons that are beyond the developer's control. Continuations have been suggested as a means to cope with the arbitrary navigation patterns that users may

Volker Gruhn; Marco Buss

2012-01-01

289

DMT transmission in the context of industrial telecontrol applications  

NASA Astrophysics Data System (ADS)

In this paper, we discuss the use of Discrete Multi Tone (DMT) modulation in the context of industrial telecontrol applications. We highlight the specific requirements and characteristics of the telecontrol settings and present methods to cope with the environmental challenges posed. It turns out that DMT is ideally suited for the tasks at hand. Further enhances enable our proposed system to provide superior connection stability even under the most adverse conditions.

Edinger, S.; Bauer, C.; Fliege, N. J.

2006-09-01

290

A Quantitative Analysis of Power Consumption for Location-Aware Applications on Smart Phones  

Microsoft Academic Search

The industry is producing new wireless mobile devices, such as smart phones, at an ever increasing pace. In terms of processors and memory, these devices are as powerful as the PCs were one decade ago. Therefore, they are perfectly suitable to become the first real-life platforms for ubiquitous computing. For instance, they can be programmed to run location-aware applications that

Arjun Anand; Constantine Manikopoulos; Quentin Jones; Cristian Borcea

2007-01-01

291

An Adaptive Loss-Aware Flow Control Scheme for Delay-Sensitive Applications in OBS Networks  

Microsoft Academic Search

Optical Burst Switching (OBS) is one of the most promising switching technologies for next generation optical networks. As delay-sensitive applications such as Voice-over-IP (VoIP) have recently become popular, OBS networks should guarantee stringent Quality of Service (QoS) requirements for such applications. Thus, this paper proposes an Adaptive Loss-aware Flow Control (ALFC) scheme, which adaptively decides on the burst offset time

Hongkyu Jeong; Jungyul Choi; Jeonghoon Mo; Minho Kang

2008-01-01

292

Preserve Your Privacy with PCO: A Privacy Sensitive Architecture for Context Obfuscation for Pervasive E-Community Based Applications  

Microsoft Academic Search

Context awareness is just beginning to revolutionize the ways we interact with networked devices. In order for context awareness to flourish, especially in a pervasive environment, users must be certain that their privacy is respected. Privacy in pervasive online community depends on the level of granularity of the provided information, user's relation to possible recipients, and the possible usage of

Farzana Rahman; Ferdaus Ahmed Kawsar; Sheikh Iqbal Ahamed

2010-01-01

293

Energy-efficient, application-aware medium access for sensor networks  

Microsoft Academic Search

We introduce FLAMA (flow-aware medium access), an energy-efficient medium-access control (MAC) protocol designed for wireless sensor networks. FLAMA achieves energy efficiency by preventing idle listening, data collisions and transmissions to a node that is not ready to receive packets. It adapts medium access schedules to the traffic flows exhibited by the application. FLAMA is simple enough so that it can

Venkatesh Rajendran; J. J. Garcia-Luna-Aveces; K. Obraczka

2005-01-01

294

'I Know That You Know' - Ascertaining Mutual Awareness of Recipient's Availability Status in Instant Messaging Applications  

Microsoft Academic Search

This study investigated ways to attain mutual, reciprocal awareness of recipient’s availability status in Instant Messaging\\u000a (IM) applications. For that purpose we designed, implemented and tested a prototype of an IM system named DoNTBother. The analysis of the quantitative and qualitative results showed that displaying status indication in the chat box\\u000a encouraged participants to show more respect towards the communicative

Agnieszka Matysiak Szóstek; Berry Eggen

2009-01-01

295

Who gets to know what when: configuring privacy permissions in an awareness application  

Microsoft Academic Search

We report on a study (N=36) of user preferences for balancing awareness with privacy. Participants defined permissions for sharing of location, availability, calendar information and instant messaging (IM) activity within an application called mySpace. MySpace is an interactive visualization of the physical workplace that provides dynamic information about people, places and equipment. We found a significant preference for defining privacy

Sameer Patil; Jennifer Lai

2005-01-01

296

There is more to context than location  

Microsoft Academic Search

Context is a key issue in interaction between human and computer, describing the surrounding facts that add meaning. In mobile computing research published the parameter location is most often used to approximate context and to implement context-aware applications. We propose that ultra -mobile computing, characterized by devices that are operational and operated while on the move (e.g. PDAs, mobile phones,

Albrecht Schmidt; Michael Beigl; Hans-werner Gellersen

1999-01-01

297

Putting the Context in Context-Driven Testing (an Application of Cultural Historical Activity Theory)  

Microsoft Academic Search

Cultural Historical Activity Theory (CHAT) (Engeström, 1987) is a model that can organize systems-level thinking and analysis. In particular, CHAT focuses on the context in which an activity takes place. Therefore, it is particularly useful for context-driven software analysis. This paper introduces and explains CHAT, illustrates how it can be used in the field, and suggests ways to apply it

Rebecca L. Fiedler; Cem Kaner

298

Metaphor, Modality, and Context: Improved user interface design for audio and music applications  

Microsoft Academic Search

The sophistication of modern audio and music computing environments has placed new demands on informational sharing and interchange between computers and users. Multiple input\\/output modalities, better use of metaphor, and implementation of context awareness can smoothen and enhance a user's experience. This paper explores how these changes are being implemented in musical, auditory, and related fields. A model for interface

Andy Sarroff

299

Learning to predict information needs: context-aware display as a cognitive aid and an assessment tool  

Microsoft Academic Search

We discuss the problem of assessing and aiding user performance in dynamic tasks that require rapid selection among multiple information sources. Motivated by research in human sequential learning, we develop a system that learns by observation to predict the information a user desires in different contexts. The model decides when the display should be updated, which is akin to the

Bradley C. Love; Matt Jones; Marc T. Tomlinson; Michael Howe

2009-01-01

300

FRAMEWORK FOR A CONTEXT-AWARE MOBILE E- HEALTH SERVICE DISCOVERY INFRASTRUCTURE FOR RURAL\\/SUBURBAN HEALTHCARE  

Microsoft Academic Search

Research efforts have produced a lot of applications and hardware devices for healthcare services especially in the developed world. However, much still left to be desire in mobile wireless healthcare research that produces semantic web services applications solution especially for the developing African countries. The first successful implementation of a mobile wireless application for the healthcare industry in the United

MATTHEW O. ADIGUN

2009-01-01

301

Information behavior in dynamic group work contexts: interwoven situational awareness, dense social networks and contested collaboration in command and control  

Microsoft Academic Search

Abstract In many dynamic work situations, no single individual can acquire the varied and often rapidly expanding information needed for success. Individuals must work together to collect, analyze, synthesize and,disseminate,information,throughout,the work,process. Perhaps one of the most,dynamic,work contexts is command,and control in the military at the battalion level which,directs 300 to 1000 soldiers on the battlefield. This paper reports on a

Diane H. Sonnenwald; Linda G. Pierce

2000-01-01

302

LoCa - Towards a Context-aware Infrastructure for eHealth Applications  

Microsoft Academic Search

New sensor technologies, powerful mobile devices and wearable computers in conjunction with wireless communi- cation standards have opened new possibilities in provid- ing customized software solutions for medical profession- als and patients. Today, medical professionals are usu- ally equipped with much more powerful hardware and soft- ware than some years before. The same is true for patients which, by making

Marco Savini; Heiko Schuldt; Joel Vogt

303

Field anthropology: application to burial contexts in prehistoric Southeast Asia  

Microsoft Academic Search

The context of burials in archaeological sites, that is whether the body was inhumed, wrapped, or in a coffin, is an aspect of mortuary ritual that has been missing from English-language publications on the subject. This is despite the development and use in France over at least the last two decades of methods of determining the context under the rubric

A. Willis; N. Tayles

2009-01-01

304

An Adaptive Loss-Aware Flow Control Scheme for Delay-Sensitive Applications in OBS Networks  

NASA Astrophysics Data System (ADS)

Optical Burst Switching (OBS) is one of the most promising switching technologies for next generation optical networks. As delay-sensitive applications such as Voice-over-IP (VoIP) have recently become popular, OBS networks should guarantee stringent Quality of Service (QoS) requirements for such applications. Thus, this paper proposes an Adaptive Loss-aware Flow Control (ALFC) scheme, which adaptively decides on the burst offset time based on loss-rate information delivered from core nodes for assigning a high priority to delay-sensitive application traffic. The proposed ALFC scheme also controls the upper-bounds of the factors inducing delay and jitter for guaranteeing the delay and jitter requirements of delay-sensitive application traffic. Moreover, a piggybacking method used in the proposed scheme accelerates the guarantee of the loss, delay, and jitter requirements because the response time for flow control can be extremely reduced up to a quarter of the Round Trip Time (RTT) on average while minimizing the signaling overhead. Simulation results show that our mechanism can guarantee a 10-3 loss-rate under any traffic load while offering satisfactory levels of delay and jitter for delay-sensitive applications.

Jeong, Hongkyu; Choi, Jungyul; Mo, Jeonghoon; Kang, Minho

305

Semantic-Aware Automatic Parallelization of Modern Applications Using High-Level Abstractions  

SciTech Connect

Automatic introduction of OpenMP for sequential applications has attracted significant attention recently because of the proliferation of multicore processors and the simplicity of using OpenMP to express parallelism for shared-memory systems. However, most previous research has only focused on C and Fortran applications operating on primitive data types. Modern applications using high-level abstractions, such as C++ STL containers and complex user-defined class types, are largely ignored due to the lack of research compilers that are readily able to recognize high-level object-oriented abstractions and leverage their associated semantics. In this paper, we use a source-to-source compiler infrastructure, ROSE, to explore compiler techniques to recognize high-level abstractions and to exploit their semantics for automatic parallelization. Several representative parallelization candidate kernels are used to study semantic-aware parallelization strategies for high-level abstractions, combined with extended compiler analyses. Preliminary results have shown that semantics of abstractions can help extend the applicability of automatic parallelization to modern applications and expose more opportunities to take advantage of multicore processors.

Liao, C; Quinlan, D J; Willcock, J J; Panas, T

2009-12-21

306

A Classification Framework for Storage and Retrieval of Context  

Microsoft Academic Search

An increasingly important requirement for mobile and pervasive sys- tems is the capability to adapt at runtime to a changing context; they must be context-aware. Much current work in this field focuses on application-specific solutions and ad-hoc approaches, and the lack of conceptual models for the de- sign of context-aware systems hinders the development of more general and complex systems.

B. I. J. Siljee; I. E. Bosloper; J. A. G. Nijhuis

307

Counseling applications of RET in a Chinese cultural context  

Microsoft Academic Search

To explore the potential of Rational Emotive Therapy (RET) with clients of Chinese background, a brief review is conducted\\u000a with respect to parallels between RET philosophy and some key components of Chinese culture and ways in which Chinese think.\\u000a Arguments are advanced as to why RET is particularly suitable for use within a Chinese cultural context. Issues involved in\\u000a using

Charles P. Chen

1995-01-01

308

GeoNotes: a real-use study of a public location-aware community system  

Microsoft Academic Search

Much of context-aware application research has dealt with the technical aspects of context capturing and how to interpret the context of a user. Little effort, however, has been spent on the experience and usage of these systems. This paper describes a real-use study of a location-aware community system - GeoNotes. Over the one-month trial, 78 users published 283 information items

Per Persson; Petra Fagerberg

2002-01-01

309

Mobile Therapy: Case Study Evaluations of a Cell Phone Application for Emotional Self-Awareness  

PubMed Central

Background Emotional awareness and self-regulation are important skills for improving mental health and reducing the risk of cardiovascular disease. Cognitive behavioral therapy can teach these skills but is not widely available. Objective This exploratory study examined the potential of mobile phone technologies to broaden access to cognitive behavioral therapy techniques and to provide in-the-moment support. Methods We developed a mobile phone application with touch screen scales for mood reporting and therapeutic exercises for cognitive reappraisal (ie, examination of maladaptive interpretations) and physical relaxation. The application was deployed in a one-month field study with eight individuals who had reported significant stress during an employee health assessment. Participants were prompted via their mobile phones to report their moods several times a day on a Mood Map—a translation of the circumplex model of emotion—and a series of single-dimension mood scales. Using the prototype, participants could also activate mobile therapies as needed. During weekly open-ended interviews, participants discussed their use of the device and responded to longitudinal views of their data. Analyses included a thematic review of interview narratives, assessment of mood changes over the course of the study and the diurnal cycle, and interrogation of this mobile data based on stressful incidents reported in interviews. Results Five case studies illustrate participants' use of the mobile phone application to increase self-awareness and to cope with stress. One example is a participant who had been coping with longstanding marital conflict. After reflecting on his mood data, particularly a drop in energy each evening, the participant began practicing relaxation therapies on the phone before entering his house, applying cognitive reappraisal techniques to cope with stressful family interactions, and talking more openly with his wife. His mean anger, anxiety and sadness ratings all were lower in the second half of the field study than in the first (P ? .01 for all three scales). Similar changes were observed among other participants as they used the application to negotiate bureaucratic frustrations, work tensions and personal relationships. Participants appeared to understand the mood scales developed for this experience sampling application and responded to them in a way that was generally consistent with self-reflection in weekly interviews. Interview accounts of mood changes, associated with diurnal cycles, personal improvement over the course of the study, and stressful episodes, could be seen in the experience sampling data. Discrepancies between interview and experience-sampling data highlighted the ways that individuals responded to the two forms of inquiry and how they calibrated mood ratings over the course of the study. Conclusions Participants quickly grasped the Mood Mapping and therapeutic concepts, and applied them creatively in order to help themselves and empathize with others. Applications developed for mobile phones hold promise for delivering state-of-the-art psychotherapies in a nonstigmatizing fashion to many people who otherwise would not have access to therapy.

Kathawala, Qusai; Leen, Todd K; Gorenstein, Ethan E; Guilak, Farzin; Labhard, Michael; Deleeuw, William

2010-01-01

310

Context-Aware Unified Communication  

Microsoft Academic Search

Enabling people-to-people interaction across heterogeneous communication end-points enhances user experience and fosters people collaboration. This paper presents the design and implementation of a unified communication system, dubbed Mercury, that allows a user to interact with others using the most convenient device at the time. Mercury supports both two-way conversation and one-way messaging. It leverages the Session Initiation Protocol to manage

Hui Lei; Anand Ranganathan

2004-01-01

311

Context-Aware Indoor Navigation  

Microsoft Academic Search

Over the past few years, several technological advances have been made to enable locating people in indoor settings, where\\u000a way finding is something we do on a daily basis. In a similar way as it happened with GPS and today’s popular outdoor navigation\\u000a systems, indoor navigation is set to become one of the first, truly ubiquitous services that will make

Fernando Lyardet; Diego Wong Szeto; Erwin Aitenbichler

2008-01-01

312

Engineering mobile-agent applications via context-dependent coordination  

Microsoft Academic Search

Mobility introduces peculiar coordination problems in agent-based Internet applications. First, it suggests the exploitation of an infrastructure based on a multiplicity of local interaction spaces. Second, it may require coordination activities to be adapted both to the characteristics of the execution environment where they occur and to the needs of the application to which the coordinating agents belong. This paper

Giacomo Cabri; Letizia Leonardi; Franco Zambonelli

2001-01-01

313

Context-based design of mobile applications for museums: a survey of existing practices  

Microsoft Academic Search

This paper includes a review of mobile applications used in museum environments, focusing on the notion of context and its constituent dimensions. Museums are a representative example in which the context influences interaction. During a museum visit, the visitors interact with the exhibits through mobile devices. We argue that, effective interaction design needs to take into consideration multiple dimensions of

Dimitrios Raptis; Nikolaos K. Tselios; Nikolaos M. Avouris

2005-01-01

314

Product-aware advertising  

Microsoft Academic Search

We propose an approach to context-aware advertising in which context is defined by the products currently used by a consumer. Unlike more traditional approaches, consumers are neither identified nor tracked; instead, products are tagged. An interesting use-case scenario for this model is a product-aware outdoor advertising system that dynamically selects a product to advertise based on the products identified for

Nafiseh Shabib; Gleb Sizov; John Krogstie

2012-01-01

315

Learning to Infer the Status of Heavy-Duty Sensors for Energy-Efficient Context-Sensing  

Microsoft Academic Search

With the prevalence of smart mobile devices with multiple sensors, the commercial application of intelligent context-aware services becomes more and more attractive. However, limited by the battery capacity, the energy efficiency of context-sensing is the bottleneck for the success of context-aware applications. Though several previous studies for energy-efficient context-sensing have been reported, none of them can be applied to multiple

Xueying Li; Huanhuan Cao; Enhong Chen; Jilei Tian

2012-01-01

316

Application of Image SIFT Features to the Context of CBIR  

Microsoft Academic Search

This paper is mainly concerned with the application of a kind of distinctive local invariant feature i.e. Lowe's SIFT feature for the purpose of CBIR, instead of the usually used global feature and local statistical feature based on image segmentation. In our CBIR system, the visual contents of the query image and the database images are extracted and described by

Xu Wangming; Wu Jin; Liu Xinhai; Zhu Lei; Shi Gang

2008-01-01

317

Extending Context Spaces Theory by Proactive Adaptation  

Microsoft Academic Search

\\u000a Context awareness is one of the core features of pervasive computing systems. Pervasive systems can also be improved by smart\\u000a application of context prediction. This paper addresses subsequent challenge of how to act according to predicted context\\u000a in order to strengthen the system. Novel reinforcement learning based architecture is proposed to overcome the drawbacks of\\u000a existing approaches to proactive adaptation.

Andrey Boytsov; Arkady B. Zaslavsky

2010-01-01

318

Mobile Context Provider for Social Networking  

Microsoft Academic Search

The ability to infer user context based on a mobile device together with a set of external sensors opens up the way to new\\u000a context-aware services and applications. In this paper, we describe a mobile context provider that makes use of sensors available\\u000a in a smartphone as well as sensors externally connected via bluetooth. We describe the system architecture from

André C. Santos; João M. P. Cardoso; Diogo R. Ferreira; Pedro C. Diniz

2009-01-01

319

A semantic and adaptive context management service for smart vehicle space in ubiquitous computing environments  

Microsoft Academic Search

This paper presents a semantic and adaptive service for context-aware information management system for supporting ubiquitous computing applications in a smart vehicle space. In ubiquitous computing environments, systems consisting of different device types, operating systems, network interfaces, and communication protocols. These contexts change dynamically and the applications have to adapt their behaviors in terms of the contexts. In order to

Qing Wu; Ying Li

2009-01-01

320

Being aware of the prognosis: how does it relate to palliative care patients' anxiety and communication difficulty with family members in the Hong Kong Chinese context?  

PubMed

Chinese family members play an important role in end-of-life decision making. Culturally, they may believe that a patient's awareness of a poor prognosis could harm his or her well-being, and thus they may avoid telling the truth to the patient. To examine this cultural belief empirically, this study aimed to explore the relationships among the patient's awareness of the prognosis, the family's awareness of the prognosis, the patient's anxiety, and difficulty in communicating with family members. Clinical data mining was the research method. Clinical records of deceased cancer patients in the palliative care unit of a hospital during 2003-2005 were reviewed, and 935 patients were included in this study. Logistic regression analyses indicated that patients who did not have a clear awareness of their prognosis were more likely to experience anxiety (odds ratio [OR]?=?1.44, 95% CI?=?1.14-1.82, p?=?0.002) and difficulty communicating with family members (OR?=?2.11, 95% CI?=?1.62-2.76, p?aware of the prognosis were more likely to experience difficulty communicating with family members (OR?=?4.48, 95% CI?=?1.93-10.42, p?awareness of prognosis may not harm Chinese patients. Instead, unrealistic incomplete awareness of prognosis by patients and family members may be associated with patient anxiety and difficulty communicating. PMID:21793730

Chan, Wallace Chi Ho

2011-07-27

321

An application of Keller's brand equity model in a B2B context  

Microsoft Academic Search

Purpose – The importance of branding in industrial contexts has increased, yet a comprehensive model of business-to-business (B2B) branding does not exist, nor has there been a thorough empirical study of the applicability of a full brand equity model in a B2B context. This paper aims to discuss the suitability and limitations of Keller's customer-based brand equity model and tests

Kerri-Ann L. Kuhn; Frank Alpert; Nigel K. Ll. Pope

2008-01-01

322

Bridging context management systems for different types of pervasive computing environments  

Microsoft Academic Search

A context management system is a distributed system that enables applications to obtain context information about (mobile) users and forms a key component of any pervasive computing environment. Context management systems are however very environment-specific (e.g., specific for home environments) and therefore do not interoperate very well. This limits the operation of context-aware applications because they cannot get context information

Cristian Hesselman; Hartmut Benz; Pravin Pawar; Fei Liu; Maarten Wegdam; Martin Wibbels; Tom Broens; Jacco Brok

2008-01-01

323

Energy-Aware Routing in Cluster-Based Sensor Networks  

Microsoft Academic Search

Recently there has been a growing interest in the applications of sensor networks. Since sensors are generally constrained in on-board energy supply, efficient management of the network is crucial in extending the life of the sensor. In this paper, we present a novel approach for energy-aware and context-aware routing of sensor data. The approach calls for network clustering and assigns

Mohamed F. Younis; Moustafa Youssef; Khaled A. Arisha

2002-01-01

324

Situation awareness measurement: A review of applicability for C4i environments  

Microsoft Academic Search

The construct of situation awareness (SA) has become a core theme within the human factors (HF) research community. Consequently, there have been numerous attempts to develop reliable and valid measures of SA but there is a lack of techniques developed specifically for the assessment of SA in command, control, communication, computers and intelligence (C4i) environments. During the design, development and

Paul Salmon; Neville Stanton; Guy Walker; Damian Green

2006-01-01

325

Decoupling capacitance allocation and its application topower-supply noise-aware floorplanning  

Microsoft Academic Search

We investigate the problem of decoupling capacitance allocation for power supply noise suppressionat floorplan level. First, we assume that a floorplan is given, and consider the decoupling capacitanceplacement as a post-floorplan step. Second, we consider the decoupling capacitance placement as anintegral part of a floorplanning methodology (noise aware floorplanning). In both cases, the objectiveis to minimize the floorplan area while

Shiyou Zhao; Kaushik Roy; Cheng-kok Koh

2002-01-01

326

A System Theoretical Approach to Situation Awareness and its Application, A Holistic View of Purposeful Elements  

Microsoft Academic Search

This paper executes a comparison of the theories by Ackoff and Bedny & Meister for situation awareness (SA). The comparison gives a conceptual design for the common part of SA. An example of an architecture that uses the concepts is presented. The conceptual design involves concepts like conscious and unconscious processes, gnostic activity, active and passive memory and dynamic processes.

Charlie Lagervik; Per M. Gustavsson

327

Enhanced Situational Awareness: Application of DDDAS Concepts to Emergency and Disaster Management  

Microsoft Academic Search

We describe a prototype emergency and disaster information system designed and implemented using DDDAS concepts. The system is designed to use real-time cell phone calling data from a geographical region, including call- ing activity - who calls whom, call duration, services in use, and cell phone lo- cation information - to provide enhanced situational awareness for managers in emergency operations

Gregory R. Madey; Albert-lászló Barabási; Nitesh V. Chawla; Marta Gonzalez; David Hachen; Brett Lantz; Alec Pawling; Timothy W. Schoenharl; Gábor Szabó; Pu Wang; Ping Yan

2007-01-01

328

Towards Interface Specification and Design Guidelines to raise User Awareness of Application Security  

Microsoft Academic Search

While the discipline of interface specification and design has received substantial attention in the existing body of academic and professional literature, there has been little research conducted into the specification and design of interfaces that allow users to interact with systems in a secure manner. As the awareness of security issues increases amongst the general user community, together with an

Rodney MacDonald; Ross Smith

329

Phonological awareness  

Microsoft Academic Search

The purpose of this article is to examine the literature linking phoneme awareness and reading acquisition and to examine the nature of this relationship in terms of learner and task. The paper begins with a definition of phoneme awareness and a description of the development of phoneme awareness. Findings from correlational and phoneme awareness training studies are summarized and the

Eileen W. Ball

1993-01-01

330

Application of Artificial Neural Networks as an Indicator of Awareness with Recall During General Anaesthesia  

Microsoft Academic Search

Objective.Awareness with recall is a rare but seriouscomplication of general anaesthesia with an incidence ranging from0.1%–0.7%. In the absence of a reliabledepth-of-anaesthesia monitor, attempts have been made to predictawareness from intraoperative haemodynamic monitoring data, with littlesuccess. Artificial neural networks can sometimes detect relationshipsbetween input and output variables even when conventional methods fail.Therefore, we subjected standard intraoperative monitoring data to bothartificial

Seppo O.-V. Ranta; Markku Hynynen; Jukka Räsänen

2002-01-01

331

Social Learning Theory: its application in the context of nurse education  

Microsoft Academic Search

Cognitive theories are fundamental to enable problem solving and the ability to understand and apply principles in a variety of situations. This article looks at Social Learning Theory, critically analysing its principles, which are based on observational learning and modelling, and considering its value and application in the context of nurse education. It also considers the component processes that will

Dolores Bahn

2001-01-01

332

Mirth and Murder: Crime Scene Investigation as a Work Context for Examining Humor Applications  

ERIC Educational Resources Information Center

|Within work settings, humor is used by workers for a wide variety of purposes. This study examines humor applications of a specific type of worker in a unique work context: crime scene investigation. Crime scene investigators examine death and its details. Members of crime scene units observe death much more frequently than other police officers…

Roth, Gene L.; Vivona, Brian

2010-01-01

333

A library for managing spatial context using arbitrary coordinate systems  

Microsoft Academic Search

Since location is an important part of context, the management of spatial information is important for many context-aware applications, e.g. the position or the extent of users, sensors, rooms or buildings. Coordinates always have a coordinate system (CS) associated to them. Numerous CSs exist and a lot of them are commonly used, thus conversion becomes a necessity. We introduce a

Thomas Schwarz; Nicola Hoenle; Matthias Grossmann; Daniela Nicklas

2004-01-01

334

Designing for privacy and self-presentation in social awareness  

Microsoft Academic Search

Social awareness applications are based on the idea of a group sharing real-time context information via personal and ubiquitous terminals. Studies of such appli- cations have shown that users are not only concerned with the preservation privacy through non-disclosure. Instead, disclosure is manipulated for the constant presentation of self to the group in everyday social situations. Basing on 3 years

Mika Raento; Antti Oulasvirta

2008-01-01

335

xLink: Context Management Solution for Commodity Ubiquitous Computing Environments  

Microsoft Academic Search

In this position paper, we present xLink, a system for managing context information and marshalling service queries and data flow. The repeated re-invention of context management systems remains a perennial phenomenon in context aware and ubiquitous computing. Often, these systems are integrated into applications to accommodate the low level requirements of the underlying devices. We hope to address this issue

Sajid H. Sadi; Pattie Maes

2005-01-01

336

A mobile context monitoring platform for pervasive computing environments  

Microsoft Academic Search

In this paper, we present a new mobile platform to support emerging pervasive applications in a Personal Area Network (PAN)-scale dynamic mobile computing environment. The PAN-scale computing environment will constitute an important part of future pervasive-space technology with highly proactive applications, requiring continuous monitoring of users' contexts. The context-aware applications impose heavy workloads on the mobile device and the sensor

Youngki Lee; Chulhong Min; Younghyun Ju; Saumay Pushp; Junehwa Song

2011-01-01

337

Experiences Using Adaptive Middleware in Distributed Real-time Embedded Application Contexts: a Dependability Perspective  

Microsoft Academic Search

Over the past few years we have developed a number of real world applications that have both motivated and used middleware technologies for COTS-based distributed ob- ject computing in general, and runtime adaptive behavior in particular. In this context, a new twist on the theme of dependability involves adaptation as an effective means for dealing with the less-than-optimum situations that

Christopher D. Gill; Joseph P. Loyall; Richard E Schantz; Douglas C. Schmidt

338

Automatic Resource-aware Construction of Media Indexing Applications for Distributed Processing Environments  

Microsoft Academic Search

Constructing pattern classification based media indexing applications for distributed processing environments (DPEs) often requires knowledge in fea- ture extraction as well as distributed processing. In order to achieve an appropriate tradeoff between indexing error rate and processing time, feature extractors (FEs) must be carefully selected based on their application specific indexing and DPE specific processing characteristics. In this paper we

Ole-christoffer Granmo

2002-01-01

339

PAL: P ropagation-aware A nomaly L ocalization for cloud hosted distributed applications  

Microsoft Academic Search

Distributed applications running inside cloud are prone to performance anomalies due to various reasons such as insufficient resource allocations, unexpected workload increases, or software bugs. However, those applications often consist of multiple interacting components where one component anomaly may cause its dependent components to exhibit anomalous behavior as well. It is challenging to identify the faulty components among numerous distributed

Hiep Nguyen; Yongmin Tan; Xiaohui Gu

2011-01-01

340

Adaptive and Context-aware Scenarios for Technology Enhanced Learning System based on a Didactical Theory and a Hierarchical Task Model  

Microsoft Academic Search

Among the main issues of future technology-enhanced learning systems, we can mention the following ones: the abi lity to reuse learning resources (learning objects, tools and services) fr om large repositories, to take into account the context and to allow dynamic adapt ation to different learners based on substantial advances in pedagogical theori es and knowledge models. In our framework,

Jean-louis Tetchueng; Serge Garlatti; Sylvain Laube

2007-01-01

341

Collectively defining context in a mobile, networked computing environment  

Microsoft Academic Search

Mobile and wireless computers are rapidly becoming popular with the general public. In our research we design and evaluate new types of applications that take advantage of the unique characteristics of these devices in novel ways. One of these applications is Graffiti, a context-aware device designed using ideas from social navigation research. This system allows users to collectively define what's

Jenna Burrell; Geri IC Gay

2001-01-01

342

A Design Framework for Awareness Systems  

NASA Astrophysics Data System (ADS)

This chapter discusses the design of awareness systems, whose main function is a social one, namely, to support social communication, mediated social interactions and eventually relationships of the individuals they connect. We focus especially on connecting friends and family rather than on systems used in the context of collaborative work. Readers interested in this latter kind of applications are referred to the design frameworks by Ginelle and Gutwin (2005) and Gutwin and Greenberg (2002). Below, we outline the relevant design space and the corresponding challenges for the design of awareness systems. The challenges pertain to social aspects of interaction design rather than the technological challenges relating to such systems. As such, they are inspired by Jonathan Grudin’s exposition of design challenges for the domain of groupware applications (Grudin, 1994).

Markopoulos, Panos

343

Reliability challenges of advanced CMOS process and product development: design and application aware qualification  

Microsoft Academic Search

As advanced technology process rapidly migrates, more than Moore approach, with pursuing cutting-edge performance, power and area scaling, revolutionary introduction of new material, process and structure will tax traditional reliability target (spec) being continuously adopted for advanced CMOS process qualification to handle reliability concerns with finer granurality. Although ICs for all applications are currently coming from the same technology node

Jongwoo Park

2012-01-01

344

Building social-aware software applications for the interactive learning age  

Microsoft Academic Search

There have been a number of frameworks and models developed to support different aspects of interactive learning. Some were developed to deal with course design through the application of authoring tools, whereas others such as conversational, advisory, and ontology-based systems were used in virtual classrooms to improve and support collaborative activities. Although these methodologies have brought new processes and practices

Renato A. C. Capuruço; Luiz F. Capretz

2009-01-01

345

Building Social-Aware Software Applications for the Interactive Learning Age  

ERIC Educational Resources Information Center

|There have been a number of frameworks and models developed to support different aspects of interactive learning. Some were developed to deal with course design through the application of authoring tools, whereas others such as conversational, advisory, and ontology-based systems were used in virtual classrooms to improve and support…

Capuruco, Renato A. C.; Capretz, Luiz F.

2009-01-01

346

A Lattice Framework for Analyzing Context-Free Languages with Applications in Parser Simplification and DataFlow Analysis  

Microsoft Academic Search

We propose a lattice framework for analyzing context-free grammars and context- free languages. This framework is motivated by a technique for simplifying parsers with information derived from the associated scanners. We define the lattice framework and demonstrate it using additional applications, including data-flow analysis. Soundness and other properties of the lattice framework are also discussed. In this paper, we first

Wuu Yang

1999-01-01

347

Tamper-Resistant, Application-Aware Blocking of Malicious Network Connections  

Microsoft Academic Search

Application-level firewalls block traffic based on the process that is sending or receiving the network flow. They help detect bots, worms, and backdoors that send or receive malicious packets without the knowledge of users. Recent attacks show that these firewalls can be disabled by knowledgeable attackers. To counter this threat, we de- velop VMwall, a fine-grained tamper-resistant process-oriented firewall. VMwall's

Abhinav Srivastava; Jonathon T. Giffin

2008-01-01

348

A Framework-Based Approach to the Development of Network-Aware Applications  

Microsoft Academic Search

Modern networks provide a QoS (quality of service) model to go beyond best-effort services, but current QoS models are oriented to- wards low-level network parameters (e.g., bandwidth, latency, jitter). Ap- plication developers, on the other hand, are interested in quality models that are meaningful to the end-user and therefore struggle to bridge the gap between network and application QoS models.

Jürg Bolliger; Thomas R. Gross

1998-01-01

349

Holding time aware dynamic bandwidth allocation algorithm for emerging bandwidth on demand multicast applications  

Microsoft Academic Search

Several switching architectures like circuit switching, packet switching and burst switching have been proposed and developed for efficient utilization of high speed optical networks. Among these Dynamic Optical Circuit Switching (DOCS) has been found to be more useful for provisioning requests in backbone (core) networks due to its capability to provide huge bandwidth by establishing high capacity light-paths. Now-a-days applications

Ali Munir; Savera Tanwir; S. M. H. Zaidi

2009-01-01

350

A metadata-aware application for remote scoring and exchange of tissue microarray images  

PubMed Central

Background The use of tissue microarrays (TMA) and advances in digital scanning microscopy has enabled the collection of thousands of tissue images. There is a need for software tools to annotate, query and share this data amongst researchers in different physical locations. Results We have developed an open source web-based application for remote scoring of TMA images, which exploits the value of Microsoft Silverlight Deep Zoom to provide a intuitive interface for zooming and panning around digital images. We use and extend existing XML-based standards to ensure that the data collected can be archived and that our system is interoperable with other standards-compliant systems. Conclusion The application has been used for multi-centre scoring of TMA slides composed of tissues from several Phase III breast cancer trials and ten different studies participating in the International Breast Cancer Association Consortium (BCAC). The system has enabled researchers to simultaneously score large collections of TMA and export the standardised data to integrate with pathological and clinical outcome data, thereby facilitating biomarker discovery.

2013-01-01

351

The Application of Remote Sensing in Support of Environmental Treaties and in Tranboundary Conservation Contexts  

NASA Astrophysics Data System (ADS)

Given its synoptic view, remote sensing is particularly well suited to environmental treaties and conservation in transboundary contexts. A number of initiatives have been launched, including the European Space Agency's Treaty Enforcement Services using Earth Observation and the NASA NGO group in support of the Convention on Biological Diversity (CBD), which seek to apply remote sensing to treaty-specific needs. The NGO group recently produced a source book on remote sensing for the CBD. This paper will provide an overview illustrated by a number of case studies in which remote sensing applications were developed in support of environmental treaties such as the Ramsar Convention on Wetlands, the Convention on Biological Diversity, and the Kyoto Protocol, as well as its use in transboundary conservation contexts such as "Peace Parks." Reference will also be made to a project on the Brazil/Uruguay border to test remote sensing applications for conservation of habitat in wetland complexes surrounding Laguna Merin, Latin America's second largest freshwater lake in terms of surface area. treaties/

de Sherbinin, A. M.

2007-12-01

352

Awareness of and Attitudes towards Heat Waves within the Context of Climate Change among a Cohort of Residents in Adelaide, Australia  

PubMed Central

Heat waves are a public health concern in Australia and unprecedented heat waves have been recorded in Adelaide over recent years. The aim of this study was to examine the perception and attitudes towards heat waves in the context of climate change among a group of residents in Adelaide, an Australian city with a temperate climate. A cross-sectional study was conducted in the summer of 2012 among a sample of 267 residents. The results of the survey found that television (89.9%), radio (71.2%), newspapers (45.3%) were the main sources from which respondents received information about heat waves. The majority of the respondents (73.0%) followed news about heat waves very or somewhat closely. About 26.6% of the respondents were extremely or very concerned about the effects of heat waves on them personally. The main issues that were of personal concern for respondents during a heat wave were their personal comfort (60.7%), their garden (48.7%), and sleeping well (47.6%). Overall, respondents were more concerned about the impacts of heat waves to the society than on themselves. There was a significant association between gender (?² = 21.2, df = 3, p = 0.000), gross annual household income (p = 0.03) and concern for the societal effects of heat waves. Less than half (43.2%) of the respondents believed that heat waves will extremely or very likely increase in Adelaide according to climate projections. Nearly half (49.3%) believed that the effects of heat waves were already being felt in Adelaide. These findings may inform the reframing and communication strategies for heat waves in Adelaide in the context of climate change.

Akompab, Derick A.; Bi, Peng; Williams, Susan; Grant, Janet; Walker, Iain A.; Augoustinos, Martha

2012-01-01

353

Awareness of and attitudes towards heat waves within the context of climate change among a cohort of residents in Adelaide, Australia.  

PubMed

Heat waves are a public health concern in Australia and unprecedented heat waves have been recorded in Adelaide over recent years. The aim of this study was to examine the perception and attitudes towards heat waves in the context of climate change among a group of residents in Adelaide, an Australian city with a temperate climate. A cross-sectional study was conducted in the summer of 2012 among a sample of 267 residents. The results of the survey found that television (89.9%), radio (71.2%), newspapers (45.3%) were the main sources from which respondents received information about heat waves. The majority of the respondents (73.0%) followed news about heat waves very or somewhat closely. About 26.6% of the respondents were extremely or very concerned about the effects of heat waves on them personally. The main issues that were of personal concern for respondents during a heat wave were their personal comfort (60.7%), their garden (48.7%), and sleeping well (47.6%). Overall, respondents were more concerned about the impacts of heat waves to the society than on themselves. There was a significant association between gender (?² = 21.2, df = 3, p = 0.000), gross annual household income (p = 0.03) and concern for the societal effects of heat waves. Less than half (43.2%) of the respondents believed that heat waves will extremely or very likely increase in Adelaide according to climate projections. Nearly half (49.3%) believed that the effects of heat waves were already being felt in Adelaide. These findings may inform the reframing and communication strategies for heat waves in Adelaide in the context of climate change. PMID:23343978

Akompab, Derick A; Bi, Peng; Williams, Susan; Grant, Janet; Walker, Iain A; Augoustinos, Martha

2012-12-20

354

Online Formative Assessments with Social Network Awareness  

ERIC Educational Resources Information Center

|Social network awareness (SNA) has been used extensively as one of the strategies to increase knowledge sharing and collaboration opportunities. However, most SNA studies either focus on being aware of peer's knowledge context or on social context. This work proposes online formative assessments with SNA, trying to address the problems of online…

Lin, Jian-Wei; Lai, Yuan-Cheng

2013-01-01

355

Chance of Vulnerability Reduction in Application-Specific NoC through Distance Aware Mapping Algorithm  

NASA Astrophysics Data System (ADS)

Mapping algorithm which means which core should be linked to which router is one of the key issues in the design flow of network-on-chip. To achieve an application-specific NoC design procedure that minimizes the communication cost and improves the fault tolerant property, first a heuristic mapping algorithm that produces a set of different mappings in a reasonable time is presented. This algorithm allows the designers to identify the set of most promising solutions in a large design space, which has low communication costs while yielding optimum communication costs in some cases. Another evaluated parameter, vulnerability index, is then considered as a principle of estimating the fault-tolerance property in all produced mappings. Finally, in order to yield a mapping which considers trade-offs between these two parameters, a linear function is defined and introduced. It is also observed that more flexibility to prioritize solutions within the design space is possible by adjusting a set of if-then rules in fuzzy logic.

Janidarmian, Majid; Fekr, Atena Roshan; Bokharaei, Vahhab Samadi

2011-08-01

356

ROADNET: A Real-time Data Aware System for Earth, Oceanographic, and Environmental Applications  

NASA Astrophysics Data System (ADS)

The Real-time Observatories, Application, and Data management Network (ROADNet) Program aims to develop an integrated, seamless, and transparent environmental information network that will deliver geophysical, oceanographic, hydrological, ecological, and physical data to a variety of users in real-time. ROADNet is a multidisciplinary, multinational partnership of researchers, policymakers, natural resource managers, educators, and students who aim to use the data to advance our understanding and management of coastal, ocean, riparian, and terrestrial Earth systems in Southern California, Mexico, and well off shore. To date, project activity and funding have focused on the design and deployment of network linkages and on the exploratory development of the real-time data management system. We are currently adapting powerful "Data Grid" technologies to the unique challenges associated with the management and manipulation of real-time data. Current "Grid" projects deal with static data files, and significant technical innovation is required to address fundamental problems of real-time data processing, integration, and distribution. The technologies developed through this research will create a system that dynamically adapt downstream processing, cataloging, and data access interfaces when sensors are added or removed from the system; provide for real-time processing and monitoring of data streams--detecting events, and triggering computations, sensor and logger modifications, and other actions; integrate heterogeneous data from multiple (signal) domains; and provide for large-scale archival and querying of "consolidated" data. The software tools which must be developed do not exist, although limited prototype systems are available. This research has implications for the success of large-scale NSF initiatives in the Earth sciences (EarthScope), ocean sciences (OOI- Ocean Observatories Initiative), biological sciences (NEON - National Ecological Observatory Network) and civil engineering (NEES - Network for Earthquake Engineering Simulation). Each of these large scale initiatives aims to collect real-time data from thousands of sensors, and each will require new technologies to process, manage, and communicate real-time multidisciplinary environmental data on regional, national, and global scales.

Vernon, F.; Hansen, T.; Lindquist, K.; Ludascher, B.; Orcutt, J.; Rajasekar, A.

2003-12-01

357

Contory: A Middleware for the Provisioning of Context Information on Smart Phones  

Microsoft Academic Search

Context-awareness can serve to make ubiquitous applications deployed for mobile devices adaptive, personalized, and accessible in dy- namically changing environments. Unfortunately, existing approaches for the provisioning of context information in ubiquitous computing environ- ments rarely take into consideration the resource constraints of mobile de- vices and the uncertain availability of sensors and service infrastructures. This paper presents the design, prototype

Oriana Riva

2006-01-01

358

Wildfire Awareness.  

ERIC Educational Resources Information Center

|Provides information about the Firewise Program whose goal is to assist people to become more fire-aware and better prepared for the effects of wildfire on property. Discusses why there are so many wildfires and what can be done. Includes the Wildland Fire Risk and Hazard Severity Assessment Form. (KHR)|

Wallace, Glenda

2002-01-01

359

Dual Meaning of the Term Context: Implications for Research, Theory and Applications.  

National Technical Information Service (NTIS)

A literature survey shows context alpha to vary greatly in its effectiveness and reasons for the variation are suggested as well as a theoretical interpretation of how it operates. Context beta is described and related to its underlying psychological mech...

D. D. Wickens

1984-01-01

360

An energy diffserv and application-aware MAC scheduling for VBR streaming video in the IEEE 802.15.3 high-rate wireless personal area networks  

Microsoft Academic Search

Pseudo-static time division multiple access (pTDMA) channel access is adopted in the IEEE 802.15.3 specification of high-rate wireless personal area networks. However, in the pTDMA, unnecessary transceiver startup and idle listening of destination devices consume much energy. Furthermore, the pTDMA is not efficient for variable bit rate video flows. In this paper, we propose an energy diffserv and application-aware scheduling

Xi Chen; Yang Xiao; Yu Cai; Jianhua Lu; Zucheng Zhou

2006-01-01

361

Preprocessing techniques for context recognition from accelerometer data  

Microsoft Academic Search

The ubiquity of communication devices such as smartphones has led to the emergence of context-aware services that are able\\u000a to respond to specific user activities or contexts. These services allow communication providers to develop new, added-value\\u000a services for a wide range of applications such as social networking, elderly care and near-emergency early warning systems.\\u000a At the core of these services

Davide Figo; Pedro C. Diniz; Diogo R. Ferreira; João M. P. Cardoso

2010-01-01

362

AWARE Foundation  

NSDL National Science Digital Library

The mission of the Adolescent Wellness and Reproductive Education Foundation (AWARE) is "dedicated to educating and empowering adolescents to make responsible decisions regarding their wellness, sexuality and reproductive health." Additionally, the AWARE Foundation also is concerned with reaching out to parents as well, in order to keep them informed about various issues affecting teen health and sexuality. The site features an area where parents and young people can ask questions, which will be answered by a team of health care specialists. In addition, visitors can take part in live chat sessions about teen health, or simply read through transcripts of previous live chat sessions. The site also provides a Fast Facts list that details some brief, but important, facts about teen sexuality and reproductive health. Finally, the site also contains a number of emergency health resources, including Web sites and phone numbers of organizations that deal with eating disorders, sexual abuse, and mental health.

363

Avalanche Awareness  

NSDL National Science Digital Library

This guide on avalanche awareness and safety discusses the anatomy of an avalanche (starting zone, track, and runout zone), avalanche factors and conditions, determining if the snowpack is safe (using snowpits and shear tests), when and where avalanches happen, the typical victims, tips for survival, an avalanche danger scale, and a list of avalanche quick checks. Avalanche conditions discussed include weather, snowfall, temperature and wind direction, snowpack, slope angle, slope orientation, terrain, and vegetation.

Cheshire, Laura

364

Current Awareness  

NSDL National Science Digital Library

Compiled monthly by the Education Information Center of the North Carolina Department of Public Instruction in association with The Landmark Project, Current Awareness is a bibliographic database of the most recent literature on issues related to education and technology. Garnered from an extensive journal collection, the citations in the database are indexed into more than 200 topic areas. Educators may browse the database by topic or conduct keyword searches on topic or title. Queries yield brief citations in a tabular format.

365

Development of re-usable C++ classes for location aware management and control systems for shipping applications  

NASA Astrophysics Data System (ADS)

Location aware management and location based automation are fast upcoming technologies which are facilitated by availability of reliable, accurate, and cheap global positioning systems and location based services. This paper discusses the development of C++ classes, which may be used for development of software for location aware management and control, specifically in merchant shipping, so as to provide improved safety, increased automation, prevention of pollution and reducing the work burden of the crew. The GPS is used in conjunction with the regionally accessible nested global shorelines (RANGS) dataset for this purpose. The design of two main C++ classes named CShorelines and CGPSInput have been discussed. A control system mandatory on all oil-tankers above 150 GRT (and few other vessels) called ODMCS has been made location aware using the novel software developed and the results obtained have been critically examined and presented.

Dave, Dhiren; Nalbalwar, Sanjay; Ghatol, Ashok

2012-12-01

366

Requirements and Challenges in the Design of Privacy-aware Sensor Networks  

Microsoft Academic Search

Sensor networks are set to become a truly ubiqui- tous technology that will affect the lives of the people in their application environment. While providing the opportunity for sophisticated, context-aware services, at the same time sensor networks impose great privacy risks. This paper discusses privacy issues in sensor networks, by identifying the requirements for privacy preserving deployments, analysing the challenges

Efthimia Aivaloglou; Stefanos Gritzalis; Charalabos Skianis

2006-01-01

367

Location Based Enabled Context Awareness Information Service  

Microsoft Academic Search

As the dramatic development of network technologies, users of nets are not only the information receivers as it was usual in the past. They might be intermediaries, inter-actors, interferences or message providers, even services providers. Thus, information transferring on the Internet is growing rapidly. Some information is useful, but the other is annoying and useless. The useless information passed to

Yih-Jiun Lee; Kai-Wen Lien

2009-01-01

368

A Context Aware Interactive Robot Educational Platform  

Microsoft Academic Search

Many researches point out that the advantages of peer tutoring, that is also one characteristic of robot education. It is not only a toy, but also your partner. We considered integrating speech, position information and 3G cell phone, to realize a highly-interactive education platform. Teachers can design different scene with many stages for English or mathematic. Students send out his

Eric Hsiao-kuang Wu; Hubert Chi-yu Wu; Yi-kai Chiang; Yu-che Hsieh; Jih-cheng Chiu; Kuan-ru Peng

2008-01-01

369

Context-Aware Wrapping: Synchronized Data Extraction  

Microsoft Academic Search

The deep Web presents a pressing need for integrating large numbers of dynamically evolving data sources. To be more automatic yet accurate in building an integration system, we observe two problems: First, across sequential tasks in integration, how can a wrapper (as an extraction task) con- sider the peer sources to facilitate the subsequent matching task? Second, across parallel sources,

Shui-lung Chuang; Kevin Chen-chuan Chang; Chengxiang Zhai

2007-01-01

370

Privacy Preservation in Context-Aware Systems.  

National Technical Information Service (NTIS)

Recent years have seen a confluence of two major trends - the increase of mobile devices such as smart phones as the primary access point to networked information and the rise of social media platforms that connect people. Their convergence supports the e...

P. Jagtap

2011-01-01

371

Semantic context aware security policy deployment  

Microsoft Academic Search

The successful deployment of a security policy is closely re- lated not only to the complexity of the security requirements but also to the capabilities\\/functionalities of the security devices. The complexity of the security requirements is ad- ditionally increased when contextual constraints are taken into account. Such situations appear when addressing the dynamism of some security requirements or when search-

Stere Preda; Frédéric Cuppens; Nora Cuppens-boulahia; Joaquín García-alfaro; Laurent Toutain; Yehia Elrakaiby

2009-01-01

372

Context to Make You More Aware  

Microsoft Academic Search

The goal of our work is to help users make more informed choices about what physical activities the y undertake. One example is to provide relevant information to help someone choose whether to wait at the closest bus stop, or walk a few minutes to the next stop, without missing the bus. In this paper, we re port on our

Adrienne Andrew; Yaw Anokwa; Karl Koscher; Jonathan Lester; Gaetano Borriello

2007-01-01

373

The case for context-aware compression  

Microsoft Academic Search

The proliferation of pictures and videos in the Internet is imposing heavy demands on mobile data networks. This demand is expected to grow rapidly and a one-fit-all solution is unforeseeable. While researchers are approaching the problem from different directions, we identify a human-centric opportunity to reduce content size. Our intuition is that humans exhibit unequal interest towards different parts of

Xuan Bao; Trevor Narayan; Ardalan Amiri Sani; Wolfgang Richter; Romit Roy Choudhury; Lin Zhong; Mahadev Satyanarayanan

2011-01-01

374

Context-dependent player's movement interpretation: application to adaptive game development  

NASA Astrophysics Data System (ADS)

Video games are more and more controlled by the real movements of the player. However, the player is constrained by the system devices, imposing a limited vocabulary of actions associated with a set of unnatural movements. To introduce more entertaining video games to players, a component-based architecture is proposed. It has been acknowledged as the starting point for the development of adaptive applications based on the hypothesis of a high level dialogue between the system and the player. The system adaptability relies on interpretation mechanisms of the player behaviors. These behaviors are defined through the representation of the real movements of the player who freely interacts with the 3D elements composing an immersive virtual environment, following a given game scenario. The efficient interpretation of the player movements relies on the introduction in the system of the management of the scene's context. The contextual information not only helps to determine the true meaning of an observed behavior but also makes the system to adapt its processes regarding this interpretation, while managing its hardware and software resources efficiently. A commercial motion capture interface has been enhanced by the elaboration of such a system.

Picard, Francois; Estraillier, Pascal

2010-02-01

375

Mean structure analysis from an IRT approach: an application in the context of organizational psychology.  

PubMed

The application of mean and covariance structure analysis with quantitative data is increasing. However, latent means analysis with qualitative data is not as widespread. This article summarizes the procedures to conduct an analysis of latent means of dichotomous data from an item response theory approach. We illustrate the implementation of these procedures in an empirical example referring to the organizational context, where a multi-group analysis was conducted to compare the latent means of three employee groups in two factors measuring personal preferences and the perceived degree of rewards from the organization. Results show that higher personal motivations are associated with higher perceived importance of the organization, and that these perceptions differ across groups, so that higher-level employees have a lower level of personal and perceived motivation. The article shows how to estimate the factor means and the factor correlation from dichotomous data, and how to assess goodness of fit. Lastly, we provide the M-Plus syntax code in order to facilitate the latent means analyses for applied researchers. PMID:23079366

Revuelta Menéndez, Javier; Ximénez Gómez, Carmen

2012-11-01

376

Context-Based Qos Model and its Application in Ubiquitous Computing  

Microsoft Academic Search

In the mobile and resource-constrained ubiquitous computing environments, we need an effective quality of service (QoS) model to support dynamic service selection in tune with the variation of context. To serve this purpose, we explore the concept of QoS and propose a context-based QoS model with hierarchical structure. Based on the context model, the QoS model can identify different types

Yong Zhang; Shen-Sheng Zhang; Song-Qiao Han

2006-01-01

377

Power Aware Scheduling of Bag-of-Tasks Applications with Deadline Constraints on DVS-enabled Clusters  

Microsoft Academic Search

Power-aware scheduling problem has been a recent issue in cluster systems not only for operational cost due to elec- tricity cost, but also for system reliability. As recent com - modity processors support multiple operating points un- der various supply voltage levels, Dynamic Voltage Scaling (DVS) scheduling algorithms can reduce power consump- tion by controlling appropriate voltage levels. In this

Kyong Hoon Kim; Rajkumar Buyya; Jong Kim

2007-01-01

378

Orchestrator: An active resource orchestration framework for mobile context monitoring in sensor-rich mobile environments  

Microsoft Academic Search

In this paper, we present Orchestrator, an active resource orchestration framework for mobile context monitoring. Emerging pervasive environments will introduce a PAN-scale sensor-rich mobile platform consisting of a mobile device and many wearable and space-embedded sensors. In such environments, it is challenging to enable multiple context-aware applications requiring continuous context monitoring to simultaneously run and share highly scarce and dynamic

Seungwoo Kang; Youngki Lee; Chulhong Min; Younghyun Ju; Jinwon Lee; Yunseok Rhee; Junehwa Song

2010-01-01

379

Large Context Problems and Their Applications to Education: Some Contemporary Examples  

ERIC Educational Resources Information Center

|Some 35 years ago, Gerard K. O'Neill used the large context of space travel with his undergraduate physics students. A Canadian physics teacher, Art Stinner, independently arrived at a similar notion in a more limited but, therefore, more generally useful sense, which he referred to as the "large context problem" approach. At a slightly earlier…

Winchester, Ian

2006-01-01

380

Generalized rough set under formal context and its application in expert system  

Microsoft Academic Search

Rough set theory and the theory of concept lattices are two efficient tools for knowledge discovery. Since an information system, the data description of rough set theory, and a formal context, the data description of concept lattice theory, can be taken as the other one. In this paper, generalized rough set model under formal context is discussed. Firstly, generalized lower

Yuming Zhai; Haifeng Liu

2010-01-01

381

A summary of students' mental models and their applications in contexts pertaining to Newton's II law  

Microsoft Academic Search

We investigated students' use of Newton's II law in mechanics and electricity and magnetism contexts. We interviewed 16 students in a two-semester calculus-based physics course. We found students' answers are consistent with two principal mental models and a combination of these two. We explore whether the students who use Newton's Second Law in mechanics contexts continue to do so in

Salomon F. Itza-Ortiz; N. Sanjay Rebello

382

An Architecture for Mobile Social Networking Applications  

Microsoft Academic Search

Mobile semantic Web provides a new way of developing context-aware social networking applications. Social networking applications are changing the way of communication by using userpsilas context-information. For example, micro-blogging has become a smart way of conveying the current situation and activity by using user context. There is currently a significant difference between using social networking applications on a static computer

J. Rana; J. Kristiansson; J. Hallberg; K. Synnes

2009-01-01

383

The Application of Human and Social Behavioral-Inspired Security Models for Self-aware Collaborative Cognitive Radio Networks  

NASA Astrophysics Data System (ADS)

This paper discusses the introduction of anthropology and sociology-inspired approaches to providing security in collaborative self-aware cognitive radio networks. This includes the introduction of not only trust models, but also respect models and ‘intuition’ models. This paper discusses numerous potential benefits from this type of approach, including benefits to algorithm security, compromise recovery, protection from the Byzantine threat, and policy enforcement.

Burbank, Jack L.; Kasch, William T. M.

384

Collaborative learning of computer applications in the contexts of work, learning, and play  

Microsoft Academic Search

The similarities among three independent studies, conducted by the authors, of informal learning in computer-supported collaboration in three different contexts are presented: (1) university undergraduates playing multiplayer videogames; (2) elementary school children playing \\

D. Michelle Hinn; X. Christine Wang; Michael B. Twidale

2004-01-01

385

Eligibility, awareness and the application decision: An empirical study of firm participation in an R&D subsidy program  

Microsoft Academic Search

This paper analyzes the application for research and development (R&D) subsidies in Finland. Finnish firm­level data on applicants and potential applicants is used to characterize firms application behavior. In addition to analyzing the characteristics underlying application for R&D subsidies, this paper also examines the use of count data models in modeling the application for R&D subsidies. The findings of this

Tanja Tanayama

386

Using Simplified Regulated Breathing with an Adolescent StuttererApplication of Effective Intervention in a Residential Context  

Microsoft Academic Search

Simplified regulated breathing (SRB) has been demonstrated to reduce or eliminate stuttering in children. However, much of the current research has evaluated the intervention with school-aged children within educational contexts. In the current case report, we extended the application of SRB by evaluating its effectiveness in treating stuttering displayed by a 15-year-old resident of a large midwestern residential facility. Further,

Kurt A. Freeman; Patrick C. Friman

2004-01-01

387

Employment interview satisfaction of applicants within the context of a developing country: the case of Turkey  

Microsoft Academic Search

This paper develops a deeper understanding of applicant interview satisfaction by examining the construct of ‘applicant satisfaction’, and then by using a presented model, exploring whether some individual-level factors might affect the level of applicant interview satisfaction and whether applicant satisfaction influences the results of interviews. First, an original measurement instrument was developed using qualitative and quantitative approaches. Next, data

Fatma Küskü; Berk M. Ataman

2011-01-01

388

Covert Racism: An Application of Essed's Analysis in a South African Context  

Microsoft Academic Search

This paper has a two-fold aim: to illustrate the use of qualitative, linguistic data in the study of overt racism; and to focus on the experience of black people at the receiving end of racist acts. Accounts of the experience of covert racism in the context of an 'open' university in South Africa were examined in terms of a method

J. Louw-Potgieter

1989-01-01

389

Bringing context to the foreground: designing for creative engagement in a novel still camera application  

Microsoft Academic Search

Sensor-based interaction has enabled a variety of n ew creative practices. With ubiquitous computing, designing for creative user experience with sensor-based devices benefits from new opportunities as well as new challenges. We propose a design approach where surrounding context information is b rought to the foreground to become a resource for interaction , available at hand and in real time

Maria Håkansson; Lalya Gaye

2008-01-01

390

Applications of universal context modeling to lossless compression of gray-scale images  

Microsoft Academic Search

Inspired by theoretical results on universal modeling, a general framework for sequential modeling of gray-scale images is proposed and applied to lossless compression. The model is based on stochastic complexity considerations and is implemented with a tree structure. It is efficiently estimated by a modification of the universal algorithm context. Several variants of the algorithm are described. The sequential, lossless

Marcelo J. Weinberger; Jorma J. Rissanen; Ronald B. Arps

1996-01-01

391

Application and Survey of Business Intelligence (BI) Tools within the Context of Military Decision Making.  

National Technical Information Service (NTIS)

Business intelligence (BI) is a general category of applications and technologies for collecting, storing, analyzing, and providing access to data to help users make better and faster decisions. BI applications include the activities of decision support s...

M. I. Tounsi

2012-01-01

392

Application of a self-evaluation maintenance model to psychological health in interpersonal contexts  

Microsoft Academic Search

This study examines the possibility of applying Tesser's (1988) Self-Evaluation Maintenance Model, which focuses on self-esteem, to individual psychological health in interpersonal contexts. The participants consist of 243 college students divided into same-sex friendship pairs. The main findings show that when comparing oneself with an close friend in a domain one finds important, positive self-perception is more closely related to

Hiroko Kamide; Ikuo Daibo

2009-01-01

393

Intermediate variable elimination in a global context for a 3D multimedia application  

Microsoft Academic Search

The 3D multimedia applications have been experiencing a tremendous growth in number and complexity. Such applications mainly consist of complex algorithms that process extensive amounts of data to create 3D images and results. For quick access, data need to be stored in small and expensive memories near the processor. Due to the increasing memory-processor gap in speed and the characteristics

M. Leeman; D. A. Alonso

2003-01-01

394

Distributed Context Management in Collaborative Environment  

Microsoft Academic Search

The context-awareness management is a challenging task in a distributed collaborative environment. This management implies the monitoring of the context information of collaborative users while adapting the responses of their requests according to their context. In this work, we distribute the context adaptation task among several entities by adopting the mobile agent paradigm. This leads to a distributed solution for

Yassine El Ghayam; Mohammed Erradi

2011-01-01

395

Gene function prediction based on genomic context clustering and discriminative learning: an application to bacteriophages  

PubMed Central

Background Existing methods for whole-genome comparisons require prior knowledge of related species and provide little automation in the function prediction process. Bacteriophage genomes are an example that cannot be easily analyzed by these methods. This work addresses these shortcomings and aims to provide an automated prediction system of gene function. Results We have developed a novel system called SynFPS to perform gene function prediction over completed genomes. The prediction system is initialized by clustering a large collection of weakly related genomes into groups based on their resemblance in gene distribution. From each individual group, data are then extracted and used to train a Support Vector Machine that makes gene function predictions. Experiments were conducted with 9 different gene functions over 296 bacteriophage genomes. Cross validation results gave an average prediction accuracy of ~80%, which is comparable to other genomic-context based prediction methods. Functional predictions are also made on 3 uncharacterized genes and 12 genes that cannot be identified by sequence alignment. The software is publicly available at . Conclusion The proposed system employs genomic context to predict gene function and detect gene correspondence in whole-genome comparisons. Although our experimental focus is on bacteriophages, the method may be extended to other microbial genomes as they share a number of similar characteristics with phage genomes such as gene order conservation.

Li, Jason; Halgamuge, Saman K; Kells, Christopher I; Tang, Sen-Lin

2007-01-01

396

Sometimes Less is More: Multi-Perspective Exploration of Disclosure Abstractions in Location-Aware Social Mobile Applications.  

National Technical Information Service (NTIS)

In the past few years, there has been increasing interest in deploying social location-sharing applications (LSAs) that enable users to continuously sense, collect, and share their location information with others. Yet, despite all the attention LSAs are ...

K. P. Tang

2010-01-01

397

Grid Computing and Beyond: The Context of Dynamic Data Driven Applications Systems  

Microsoft Academic Search

The advent of Grid computing has enhanced our capabilities to model and simulate complex systems arising in scientific, engineering, and commercial applications. The premise of Grid computing has been \\

FREDERICA DAREMA

2005-01-01

398

Making Finite-State Methods Applicable to Languages Beyond Context-Freeness via Multidimensional Trees  

Microsoft Academic Search

We provide a new term-like representation for multi-dimensional trees as defined by Rogers (1,2) which establishes them as a direct g eneralization of clas- sical trees. As a consequence these structures can be used as input for finite-state applications based on classical term-based tree language theory. Via the correspon- dence between string and tree languages these applications can then be

Anna Kasprzik

2008-01-01

399

G-Nut software library and its applications within context of EPOS  

NASA Astrophysics Data System (ADS)

The contribution will present new G-Nut software library aimed for the development of targeted end-user GNSS applications in various geoscientific fields - geodesy, seismology, meteorology, climatology end others in future. The G-Nut core library has been developed since 2011 in Geodetic Observatory Pecný. Its status and more detais can be found at www.pecny.cz. The library is written in C++ applying the object oriented approach aiming for a flexible source code implementation, easy maintenance and future extension. Currently, the library supports the Precise Point Positioning GNSS processing technique as a core highly efficient and autonomous method suitable for most accurate post-processing tasks as well as real-time applications. Specific end-user applications are being developed - the tool for GNSS data converting, concatenating, editing and quality checking, the application for tropospheric parameter estimation in (near) real-time and post-processing and the application for the precise position estimation in static and kinematic mode. Although the programs are still under consolidation for a first release, the latest results demonstrate the capability and relevance for supporting specific applications in different areas. Plans for further enhancements are discussed together with potential contributions to the EPOS or similar other inter-disciplinary projects.

Dousa, Jan; Vaclavovic, Pavel; Gyori, Gabriel; Kostelecky, Jan

2013-04-01

400

K-balance partitioning: an exact method with applications to generalized structural balance and other psychological contexts.  

PubMed

Structural balance theory (SBT) has maintained a venerable status in the psychological literature for more than 5 decades. One important problem pertaining to SBT is the approximation of structural or generalized balance via the partitioning of the vertices of a signed graph into K clusters. This K-balance partitioning problem also has more general psychological applications associated with the analysis of similarity/dissimilarity relationships among stimuli. Accordingly, K-balance partitioning can be gainfully used in a wide variety of SBT applications, such as attraction and child development, evaluation of group membership, marketing and consumer issues, and other psychological contexts not necessarily related to SBT. We present a branch-and-bound algorithm for the K-balance partitioning problem. This new algorithm is applied to 2 synthetic numerical examples as well as to several real-world data sets from the behavioral sciences literature. PMID:20515236

Brusco, Michael; Steinley, Douglas

2010-06-01

401

Schematic representation of residue-based protein context-dependent data: an application to transmembrane proteins.  

PubMed

An algorithmic method for drawing residue-based schematic diagrams of proteins on a 2D page is presented and illustrated. The method allows the creation of rendering engines dedicated to a given family of sequences, or fold. The initial implementation provides an engine that can produce a 2D diagram representing secondary structure for any transmembrane protein sequence. We present the details of the strategy for automating the drawing of these diagrams. The most important part of this strategy is the development of an algorithm for laying out residues of a loop that connects to arbitrary points of a 2D plane. As implemented, this algorithm is suitable for real-time modification of the loop layout. This work is of interest for the representation and analysis of data from (1) protein databases, (2) mutagenesis results, or (3) various kinds of protein context-dependent annotations or data. PMID:10736778

Campagne, F; Weinstein, H

402

Acoustic environment as an indicator of social and physical context  

Microsoft Academic Search

Acoustic environments provide many valuable cues for context-aware computing applications. From the acoustic environment we\\u000a can infer the types of activity, communication modes and other actors involved in the activity. Environmental or background\\u000a noise can be classified with a high degree of accuracy using recordings from microphones commonly found in PDAs and other\\u000a consumer devices. We describe an acoustic environment

Dan Smith; Ling Ma; Nick Ryan

2006-01-01

403

Design, analysis, tools and applications for programmable high-speed and power-aware 4G processors  

Microsoft Academic Search

Data rate traffic and communication capacity demand have been increased continuously. Therefore, a highly advanced 4G wireless system is required to meet a high demand for modern mobile terminals. For getting a further improvement for 4G communication systems, new paradigms of design, analysis tools and applications for 4G communication processors are necessary. In this paper, some of these new paradigms

Ka Lok Man; Jieming Ma; T. T. Jeong; Chi-Un Lei; Yanyan Wu; Sheng-Uei Guan; J. K. Seon; Yunsik Lee

2011-01-01

404

The problem-context dependence of students' application of Newton's second law  

Microsoft Academic Search

Previous research has indicated that improved knowledge organization allows experts to solve problems in a larger variety of contextual settings. In addition, it has been suggested that contextual appreciation is a form of learning ignored by much instruction. To that end, this study investigated students' understanding and application of Newton's Second Law (F = ma) in scenarios differing from those

Alicia Ranee Allbaugh

2003-01-01

405

THE CROSS-CULTURAL LEADER: THE APPLICATION OF SERVANT LEADERSHIP THEORY IN THE INTERNATIONAL CONTEXT  

Microsoft Academic Search

Leadership theories have evolved from a focus on traits, to behaviors, to contingency theories, to more contemporary approaches including servant leadership theory. This paper provides an overview of the principles of servant leadership and identifies characteristics displayed by servant leaders in the workplace, with special emphasis on the importance of empowerment in defining a servant-leader. It also addresses the application

Maureen Hannay

406

Is Recess an Achievement Context? An Application of Expectancy-Value Theory to Playground Choices  

ERIC Educational Resources Information Center

This study investigated the application of an expectancy-value model to children's activity choices on the playground at recess. The purpose was to test the prediction that expectancies for success and subjective task values are related to decisions to engage in specific recess activities such as climbing, playing soccer, or skipping rope.…

Spencer-Cavaliere, Nancy; Dunn, Janice Causgrove; Watkinson, E. Jane

2009-01-01

407

One database, many dictionaries — varying co(n)text with the dictionary application TshwaneLex  

Microsoft Academic Search

This paper provides background information for a software demonstration of TshwaneLex, during which the actual use of the application is illustrated in real time. The focus of the demonstration is on two main aspects, together with a related aspect in each case, of particular interest to the ASIALEX 2005 conference. These are full Unicode support and customisable sorting on the

Gilles-Maurice de Schryver; David Joffe

408

Bazaar: A Conceptual Framework for Physical Space Applications  

Microsoft Academic Search

\\u000a In ubiquitous computing era, the notion of context-awareness will play an important role. An application should be aware of\\u000a its operating context for supporting and enriching human activities. Such contextual information is required to be extracted\\u000a as seamlessly as possible through interaction between users and surrounding environments. This leads to the need for dealing\\u000a with a wide variety of contextual

Kaori Fujinami; Tetsuo Yamabe; Tatsuo Nakajima

2004-01-01

409

Knowledge-based public health situation awareness  

NASA Astrophysics Data System (ADS)

There have been numerous efforts to create comprehensive databases from multiple sources to monitor the dynamics of public health and most specifically to detect the potential threats of bioterrorism before widespread dissemination. But there are not many evidences for the assertion that these systems are timely and dependable, or can reliably identify man made from natural incident. One must evaluate the value of so called 'syndromic surveillance systems' along with the costs involved in design, development, implementation and maintenance of such systems and the costs involved in investigation of the inevitable false alarms1. In this article we will introduce a new perspective to the problem domain with a shift in paradigm from 'surveillance' toward 'awareness'. As we conceptualize a rather different approach to tackle the problem, we will introduce a different methodology in application of information science, computer science, cognitive science and human-computer interaction concepts in design and development of so called 'public health situation awareness systems'. We will share some of our design and implementation concepts for the prototype system that is under development in the Center for Biosecurity and Public Health Informatics Research, in the University of Texas Health Science Center at Houston. The system is based on a knowledgebase containing ontologies with different layers of abstraction, from multiple domains, that provide the context for information integration, knowledge discovery, interactive data mining, information visualization, information sharing and communications. The modular design of the knowledgebase and its knowledge representation formalism enables incremental evolution of the system from a partial system to a comprehensive knowledgebase of 'public health situation awareness' as it acquires new knowledge through interactions with domain experts or automatic discovery of new knowledge.

Mirhaji, Parsa; Zhang, Jiajie; Srinivasan, Arunkumar; Richesson, Rachel L.; Smith, Jack W.

2004-09-01

410

Inferring divergence of context-dependent substitution rates in Drosophila genomes with applications to comparative genomics.  

PubMed

Nucleotide substitution is a major evolutionary driving force that can incrementally and stochastically give rise to broad divergence patterns among species. The substitution process at each genomic position is frequently modeled independently of the other positions, although complex interactions between nearby bases are known to significantly affect mutation rates. Here, we study the evolution of 12 fly genomes using new algorithms for accurate inference of parameter-rich substitution models. By comparing models between lineages, we reveal the evolutionary histories of substitution rates at different flanking nucleotide contexts. We demonstrate these driving forces of molecular evolution to be constantly changing, suggesting that neutral drift of mutation rates is an important factor in the evolution of genomes and their sequence composition. This observation is used to develop a scalable approach for parameter-rich comparative genomics. By screening short DNA sequences, we demonstrate how homeoboxes and other transcription factor binding motifs are highly conserved based on our parameter-rich models but not according to standard conservation assays. With the increasing availability of genome sequences, rich substitution models become an attractive and practical approach for evolutionary analysis in general and comparative genomics in particular. PMID:22319143

Chachick, Ran; Tanay, Amos

2012-02-01

411

Moodle 2.0 Web Services Layer and Its New Application Contexts  

NASA Astrophysics Data System (ADS)

Owing to the intrinsic relation among actual education and new technologies, it results essential the fact to found the new ways to satisfy both sides of the modern eLearning platforms, the needs of students and tutors and the enough technologies to support it. Consequently, the possibility to interconnect the LMS with other external applications to enrich and strengthen the comprehension of learning process is one of the principal paths to follow.

Conde, Miguel Ángel; Aguilar, Diego Alonso Gómez; Del Pozo de Dios, Alberto; Peñalvo, Francisco José García

412

Language Awareness as a Challenge for Business  

ERIC Educational Resources Information Center

|The following contribution is a meta-analysis of the language awareness discipline from a practical application point of view. It is based on a keynote speech at the "10th International Conference of the Association for Language Awareness," and deals with the implications of business requirements for language use in communication processes. The…

Hunerberg, Reinhard; Geile, Andrea

2012-01-01

413

Language Awareness as a Challenge for Business  

ERIC Educational Resources Information Center

The following contribution is a meta-analysis of the language awareness discipline from a practical application point of view. It is based on a keynote speech at the "10th International Conference of the Association for Language Awareness," and deals with the implications of business requirements for language use in communication processes. The…

Hunerberg, Reinhard; Geile, Andrea

2012-01-01

414

Empirical Evaluation of User Experience in Two Adaptive Mobile Application Prototypes  

Microsoft Academic Search

Today's applications such as ubiquitous systems are more and more aware of user's habits and the context of use. The features of products and the context of use will affect the human's experiences and preferences about the use of device. Thus, user experience in user -product interaction has been regarded as an important research topic in the mobile application design

Leena Arhippainen; Marika Tähti

415

Sexual risk-taking at home and on holidays: the importance of context for the late application of condoms.  

PubMed

Background Several studies have examined condom use during 'holiday' sex but have not considered condom errors in this context. This study aims to identify factors associated with late application of condoms during participants' most recent vaginal intercourse at home and away from home (holidays or short breaks). Method: Participants aged 19-30 years from a national Irish survey were recontacted (n=388; 51% men; mean age: 23.9 years). Telephone interviews regarding participants' most recent sex at home (n=362) and away from home (n=178) were conducted. Results: A higher proportion reported condom use away from home (79% v. 62%), with a lower prevalence of late application (14% v. 24%). Pregnancy prevention as the primary motive for condom use increased the odds of late application at home (adjusted odds ratio (AOR): 4.56, 95% confidence interval (CI): 2.10-9.90) and away (AOR: 3.97, 95% CI: 1.36-11.59). A weak desire to use a condom also increased the likelihood of late application at home (AOR: 2.40, 95% CI: 1.03-5.62) and away (AOR: 11.18, 95% CI: 2.84-43.98). Subgroup analysis of those reporting both sexual events suggests that young adults take greater sexual risks with casual partners at home compared to away. Conclusions: The findings suggest that young adults take greater sexual risks at home than when away. Regardless of location, young adults are most likely to report late application when they have a weak desire to use a condom and when they use condoms primarily to prevent pregnancy. PMID:23838080

Cousins, Gráinne; Layte, Richard; Ingham, Roger; McGee, Hannah

2013-10-01

416

The Problem-Solving Approach to program evaluation: Development and application in a mathematics context  

NASA Astrophysics Data System (ADS)

This study developed and piloted the Problem-Solving Approach to program evaluation, which involves the direct application of the problem-solving process as a metaphor for program evaluation. A rationale for a mathematics-specific approach is presented, and relevant literature in both program evaluation and mathematics education is reviewed. The Problem-Solving Approach was piloted with a high-school level integrated course in mathematics and science that used graphing calculators and data collection devices with the goal of helping students to gain better understanding of relationships between mathematics and science. Twelve students participated in the course, which was co-taught by a mathematics teacher and a science teacher. Data collection for the evaluation included observations, a pre- and posttest, student questionnaires, student interviews, teacher interviews, principal interviews, and a focus group that involved both students and their teachers. Results of the evaluation of the course are presented as an evaluation report. Students showed improvement in their understandings of mathematics-science relationships, but also showed growth in terms of self-confidence, independence, and various social factors that were not expected outcomes. The teachers experienced a unique form of professional development by learning and relearning concepts in each other's respective fields and by gaining insights into each other's teaching strengths. Both the results of the evaluation and the evaluation process itself are discussed in light of the proposed problem-solving approach. The use of problem solving and of specific problem-solving strategies was found to be prevalent among the students and the teachers, as well as in the activities of the evaluator. Specific problem-solving strategies are highlighted for their potential value in program evaluation situations. The resulting Problem-Solving Approach, revised through the pilot application, employs problem solving as a recursive process at three interconnected levels: the evaluation level (where the evaluator is problem solver), the program level (where teachers or other program administrators are problem solvers), and the mathematical task level (where students are problem solvers).

Costner, Kelly Mitchell

417

Advanced Interaction in Context  

Microsoft Academic Search

Mobile information appliances are increasingly used in numerous different situations and locations, setting new requirements to their interaction methods. When the user{\\\\textquoteright}s situation, place or activity changes, the functionality of the device should adapt to these changes. In this work we propose a layered real-time architecture for this kind of context-aware adaptation based on redundant collections of low-level sensors. Two

Albrecht Schmidt; Kofi Asante Aidoo; Antti Takaluoma; Urpo Tuomela; Kristof Van Laerhoven; Walter Van de Velde

1999-01-01

418

NEWS: Science awareness  

NASA Astrophysics Data System (ADS)

The Particle Physics and Astronomy Research Council's award scheme in the public understanding of science and technology for 1999 is currently under way and the first closing date has already passed. The second date for the receipt of applications for the Small Awards scheme is 10 October (open to anyone), with awards ranging from £250 up to the maximum of £10 000 per project. The funding can be used for materials, salaries, travel and subsistence, and there may be a slight preference towards projects involving young people and schools. Subject areas must be those relevant to PPARC: particle physics; space, ionospheric, solar and planetary science; astronomy, astrophysics and cosmology. Application documentation can be obtained from PUST Office Room 2232, PPARC, Polaris House, North Star Avenue, Swindon SN2 1SZ (tel: 01793 442002, e-mail: pr_pus@pparc.ac.uk and website http://www.pparc.ac.uk/role/notes.html). And whilst on this same theme, the deadline is fast approaching for a new Institute of Physics scheme intended to recognize work on increasing awareness of the exciting nature of physics and its relevance and impact on everyday life. The Public Awareness of Physics awards will recognize individuals and groups who have demonstrated excellence, inspiration and innovation in bringing physics to the public and assist in raising the status of this kind of activity. There are no restrictions on eligibility and nominees do not have to be members of the Institute of Physics, physicists or physics trained. Nominations may be made by anyone, with up to five awards to be given annually. Further details, nomination guidelines and forms are available from Katie Perry, Public Affairs Department, Institute of Physics, 76 Portland Place, London W1N 3DN (tel: 0171 470 4800, e-mail: katie.perry@iop.org).

1999-05-01

419

Preparatory analyses and development of algorithms for agricultural applications in the context of the EnMAP hyperspectral mission  

NASA Astrophysics Data System (ADS)

With the launch of the German hyperspectral satellite mission 'Environmental Mapping and Analysis Program' (EnMAP), anticipated in 2014, unprecedented opportunities will open up for a wide range of applications. Along with different areas of application, the agricultural sector will particularly benefit from the availability of such observation capability. Information about state and dynamics of the (non-)vegetated land surface, expressed by biophysical variables, is required for instance in irrigation water determination, stress detection or in advanced crop production modeling. In the context of the mission, a toolbox will be provided to determine these variables from hyperspectral imagery. Algorithms to be implemented will range from empirical methods, such as hyperspectral vegetation indices, to physically based approaches, involving the inversion of canopy reflectance models. In this study, potential techniques for the EnMAP toolbox are selected and tested using data from two field campaigns conducted in two different geographic regions. One of the campaigns was carried out in summer 2009 at the German agricultural 'Landau test site' as a first step towards the scientific preparation of the EnMAP mission. During the campaign, data of the airborne hyperspectral scanner HyMap were acquired concurrently with ground measurements of canopy water content and other variables. The second campaign was conducted in the Cuga river basin in Sardinia (Italy) during summer 2007. First results of data analyses will be presented and discussed, emphasizing in particular the benefits of multi-temporal and multi-seasonal hyperspectral data availability over current operational systems.

Richter, K.; Hank, T.; Mauser, W.

2010-10-01

420

Location Aware Resource Management in Smart Homes  

Microsoft Academic Search

The rapid advances in a wide range of wireless access tech- nologies along with the efficient use of smart spaces have already set the stage for development of smart homes. Context-awareness is perhaps the most salient feature in these intelligent computing platforms. The \\

Abhishek Roy; Soumya K. Das Bhaumik; Amiya Bhattacharya; Kalyan Basu; Diane J. Cook; Sajal K. Das

2003-01-01

421

Awareness and Monitoring in Outdoor Marine Education  

ERIC Educational Resources Information Center

|Background: This paper examines learning relationships associated with awareness, attitude and participatory action skills in the context of community education programs concerning the marine environment. Purpose: An investigation of the relationship of experiential marine education to environmental knowledge, attitudes and responsible ecological…

Stepath, Carl

2004-01-01

422

Ernest Hemingway's Awareness of Other Writers  

Microsoft Academic Search

This thesis demonstrates Ernest Hemingway's awareness of other writers, both past and contemporary to him. It collates Hemingway's references to other writers as culled from a variety of biographical and critical sources. It serves as a reference work for the study of Hemingway's statements on otherwriters, while seeking to establish them in a properly objective context. This thesis does not

John Blair Hemstock

1979-01-01

423

Joint Milli-Arcsecond Pathfinder Survey (J-MAPS) Mission: The Application of High Metric Accuracy Astrometry to Space Situational Awareness.  

National Technical Information Service (NTIS)

Two critical aspects of the Space Situational Awareness (SSA) problem are detection and orbit generation for Resident Space Objects (RSOs). The two problems have two different instrumentation solutions. Existing and planned ground and space-based optical ...

B. Dorland D. Monet K. Johnston R. Gaume

2006-01-01

424

Modeling a probabilistic ontology for Maritime Domain Awareness  

Microsoft Academic Search

Situational awareness and prediction are essential elements of information fusion. Both involve various types of uncertainty and require a sound automated inferential process. Probabilistic ontologies support uncertainty management in se- mantically aware systems, and facilitate modular, interoperable systems. This paper describes the process of developing a prob- abilistic ontology for a Maritime Domain Awareness application. The ontology was created to

Rommel N. Carvalho; Richard Haberlin; Paulo Cesar G. Costa; Kathryn B. Laskey; K C Chang

2011-01-01

425

Cultural Awareness through Medical Student and Refugee Patient Encounters  

Microsoft Academic Search

Purpose: This paper presents findings from a qualitative investigation of cultural awareness that medical students developed in the context of providing medical care to refugees. Our evaluation question was: What kinds of cultural awareness and communication lessons do medical students derive from clinical encounters with refugee patients? Methods: Thirty-eight semi-structured interviews were conducted to debrief a sample of 27 medical

Kim Griswold; Luis E Zayas; Joan B Kernan; Christine M Wagner

2007-01-01

426

Personalizing situation awareness  

SciTech Connect

Emergency responders need access to information but what counts as actionable information depends on their role, task, location, and other variables. For example, experts who have unique knowledge and experience and are called on to serve as scientific and teclmical responders, require correspondingly unique situation awareness in order to do their work. In our research-in-progress we leverage emerging and evolving web and digital library technologies to create personalized situation awareness tools that address the needs of these scientific and technical responders in real time, through focused information collection, extraction, integration, representation, and dissemination. We describe three personalized situation awareness tools in this paper: the Theme Awareness Tool (THEMAT), Social Awareness Tool (SAT), and Expertise Awareness Tool (EXPAT). The concepts and technologies we are developing in collaboration with experts apply to those who use the Web, in general, and offer an approach to the general issue of HCI design for emergencies.

Collins, Linn Marks [Los Alamos National Laboratory; Powell, James E [Los Alamos National Laboratory; Roman, Jorge R [Los Alamos National Laboratory; Martinez, Mark L B [Los Alamos National Laboratory; Mane, Ketan K [RENCI

2009-01-01

427

Experience with Using the Sensewear BMS Sensor System in the Context of a Health and Wellbeing Application  

PubMed Central

An assessment of a sensor designed for monitoring energy expenditure, activity, and sleep was conducted in the context of a research project which develops a weight management application. The overall goal of this project is to affect sustainable behavioural change with respect to diet and exercise in order to improve health and wellbeing. This paper reports results of a pretrial in which three volunteers wore the sensor for a total of 11 days. The aim was to gain experience with the sensor and determine if it would be suitable for incorporation into the ICT system developed by the project to be trialled later on a larger population. In this paper we focus mainly on activity monitoring and user experience. Data and results including visualizations and reports are presented and discussed. User experience proved positive in most respects. Exercise levels and sleep patterns correspond to user logs relating to exercise sessions and sleep patterns. Issues raised relate to accuracy, one source of possible interference, the desirability of enhancing the system with real-time data transmission, and analysis to enable real-time feedback. It is argued that automatic activity classification is needed to properly analyse and interpret physical activity data captured by accelerometry.

Jones, Val; Bults, Richard; de Wijk, Rene; Widya, Ing; Batista, Ricardo; Hermens, Hermie

2011-01-01

428

Environmental Awareness Bibliography.  

ERIC Educational Resources Information Center

Environmental Awareness is the theme of this bibliography compiled by the Friends Council on Education to assist in the task of implementing environmental awareness courses and experiences into the crowded curricula and extra-curricular life of schools and colleges. Part One, "Definition of the Problem," is a selected bibliography of printed…

Swan, Fred C.

429

Awareness and Sales  

Microsoft Academic Search

A vast array of advertising studies have concluded that advertising can normally generate only lower order beliefs like awareness. As such, are advertising expenditures to gain higher mar- ket place awareness justifred in terms of incremental sales? This study answered very affirmatively this question based upon a market study for a major fast food chain.

Joseph D. Brown

1994-01-01

430

[Neuromonitoring and awareness].  

PubMed

Awareness is a rare but in some cases severe complication of general anesthesia. In clinical practice vegetative signs such as sweating, lacrimation, tachycardia and hypertension are used to assess the anesthetic depth. Awareness however may also occur without any of these signs. Different systems based on the electroencephalogram (EEG) have been developed to monitor hypnosis. Some studies have shown that the use of EEG based monitor systems can reduce the incidence of awareness in patients of high risk. A similar reduction of the incidence was reached in studies using protocols based on concentrations of volatile anesthetics. Other systems to monitor anesthetic depth have been developed, but their influence on awareness has not yet been investigated sufficiently. Further studies are needed to clarify their impact concerning the incidence of awareness. PMID:23364825

Posch, Matthias J; Bosch, Matthias J; Baars, Jan H

2013-01-30

431

Context Grouping Mechanism for Context Distribution in Ubiquitous Environments  

Microsoft Academic Search

Context distribution is a key aspect for successful applications within mobile and ubiquitous computing environments. In such\\u000a environments, context information is acquired by several and multiple context sensors distributed over the environment. Applications\\u000a collect and react to these data, according to predefined adaptation mechanisms. The success of these mechanisms depends on\\u000a the availability of context information, which is disseminated over

Manuele Kirsch-pinheiro; Yves Vanrompay; Koen Victor; Yolande Berbers; Massimo Valla; Cristina Fra; Alessandro Mamelli; Paolo Barone; Xiaoming Hu; A. Devlic; G. Panagiotou

2008-01-01

432

Context-Sensitive Resource Discovery.  

National Technical Information Service (NTIS)

This paper presents the Solar system framework that allows resources to advertise context-sensitive names and for applications to make context- sensitive name queries. The heart of our framework is a small specification language that allows composition of...

G. Chen D. Kotz

2003-01-01

433

Let The Puppets Move! Automated Testbed Generation for Service-oriented Mobile Applications  

Microsoft Academic Search

There is a growing interest for techniques and tools fa- cilitating the testing of mobile systems. The movement of nodes is one of the relevant factors of context change in ubiquitous systems and a key challenge in the validation of context-aware applications. An approach is proposed to generate a testbed for service-oriented systems that takes into account a mobility model

Antonia Bertolino; Guglielmo De Angelis; Francesca Lonetti; Antonino Sabetta

2008-01-01

434

Awareness and Use of Folic Acid among Women in the Lower Mississippi Delta  

ERIC Educational Resources Information Center

|Context: National and state efforts to increase folic acid awareness and use may not be reaching large segments of the population. Purpose: This study examines folic acid awareness and use among women of childbearing age in a representative, economically at-risk rural sample and identifies factors that influence awareness and use. Methods: A…

Robbins, James M.; Hopkins, Sarah E.; Mosley, Bridget S.; Casey, Patrick H.; Cleves, Mario A.; Hobbs, Charlotte A.

2006-01-01

435

Network-Based Learning and Assessment Applications on the Semantic Web  

ERIC Educational Resources Information Center

|Today's Web applications are already "aware" of the network of computers and data on the Internet, in the sense that they perceive, remember, and represent knowledge external to themselves. However, Web applications are generally not able to respond to the meaning and context of the information in their memories. As a result, most applications

Gibson, David

2005-01-01

436

Celiac Disease Awareness Campaign  

MedlinePLUS

... Welcome to the National Institutes of Health (NIH) Celiac Disease Awareness Campaign Celiac disease is an immune reaction to gluten, a protein ... information about the symptoms, diagnosis, and treatment of celiac disease, also known as celiac sprue, nontropical sprue, and ...

437

Child Care Aware  

MedlinePLUS

... learn about high-quality child care. Welcome to Child Care Aware® E-Mail Print Share Tweet Military Child ... 2246 Call TTY#: 1-866-278-9428 Free Child Care Search Please enter your zip code. Your local ...

438

Occlusion-aware interfaces  

Microsoft Academic Search

We define occlusion-aware interfaces as interaction techniques which know what area of the display is currently occluded, and use this knowledge to counteract potential problems and\\/or utilize the hidden area. As a case study, we describe the Occlusion-Aware Viewer, which identifies important regions hidden beneath the hand and displays them in a non-occluded area using a bubble-like callout. To determine

Daniel Vogel; Ravin Balakrishnan

2010-01-01

439

Social Contexts Influence Ethical Considerations of Research  

Microsoft Academic Search

This article argues that we could improve the design of research protocols by developing an awareness of and a responsiveness to the social contexts of all the actors in the research enterprise, including subjects, investigators, sponsors, and members of the community in which the research will be conducted. “Social context” refers to the settings in which the actors are situated,

Judith B. Gordon; Robert J. Levine; Carolyn M. Mazure; Philip E. Rubin; Barry R. Schaller; John L. Young

2011-01-01

440

Supporting Social Awareness with 3D Collaborative Virtual Environments and Mobile Devices: VirasMobile  

Microsoft Academic Search

Social awareness is essential for effective learning. 3D collaborative virtual environments (CVEs) have been proposed as a tool for social awareness support in an educational context as the natural environments are often not sufficient for this purpose. User evaluations of the prototype that was developed to test the suitability of 3D CVEs in this context identified a number of problems

E. Prasolova Forland; Monica Divitini; Anders Einar Lindås

2007-01-01

441

The application of Intervention Mapping in developing and implementing school-based sexuality and HIV\\/AIDS education in a developing country context: The case of Tanzania  

Microsoft Academic Search

Aims: Effective sexuality and HIV\\/AIDS education programmes are needed to protect young people against HIV\\/AIDS and teenage pregnancy in Tanzania and other Sub-Saharan African countries. Using a theory- and evidence-based approach and adapting the programmes to local contexts, increases the effectiveness of these programmes. This paper describes and discusses the challenges and opportunities concerning the application of Intervention Mapping (IM)

KITILA MKUMBO; HERMAN SCHAALMA; SYLVIA KAAYA; JOANNE LEERLOOIJER; JESSIE MBWAMBO; GAD KILONZO

2010-01-01

442

Image processing technology for enhanced situational awareness  

NASA Astrophysics Data System (ADS)

This paper discusses the integration of a number of advanced image and data processing technologies in support of the development of next-generation Situational Awareness systems for counter-terrorism and crime fighting applications. In particular, the paper discusses the European Union Framework 7 'SAMURAI' project, which is investigating novel approaches to interactive Situational Awareness using cooperative networks of heterogeneous imaging sensors. Specific focus is given to novel Data Fusion aspects of the research which aim to improve system performance through intelligently fusing both image data and non image data sources, resolving human-machine conflicts, and refining the Situational Awareness picture. In addition, the paper highlights some recent advances in supporting image processing technologies. Finally, future trends in image-based Situational Awareness are identified, such as Post-Event Analysis (also known as 'Back-Tracking'), and the associated technical challenges are discussed.

Page, S. F.; Smith, M. I.; Hickman, D.

2009-09-01

443

A Differential Data-Aware Power-Supplied (D AP) 8T SRAM Cell With Expanded Write\\/Read Stabilities for Lower VDDmin Applications  

Microsoft Academic Search

Due to global and local process variations, on-chip SRAM suffers failures at a low supply voltage (VDD). This study proposes a differential data-aware power-supplied D2 AP 8T SRAM cell to address the stability and trade-off-issues between write and half-select accesses that still remain in the conventional 8T and 6T cells. Powered by its bitline pair, the proposed 8T cell applies

Meng-Fan Chang; Jui-Jen Wu; Kuang-Ting Chen; Yung-Chi Chen; Yen-Hui Chen; Robin Lee; Hung-Jen Liao; Hiroyuki Yamauchi

2010-01-01

444

Describing the Situational Contexts of Sweetened Product Consumption in a Middle Eastern Canadian Community: Application of a Mixed Method Design  

PubMed Central

Little is known about the situational contexts in which individuals consume processed sources of dietary sugars. This study aimed to describe the situational contexts associated with the consumption of sweetened food and drink products in a Catholic Middle Eastern Canadian community. A two-stage exploratory sequential mixed-method design was employed with a rationale of triangulation. In stage 1 (n?=?62), items and themes describing the situational contexts of sweetened food and drink product consumption were identified from semi-structured interviews and were used to develop the content for the Situational Context Instrument for Sweetened Product Consumption (SCISPC). Face validity, readability and cultural relevance of the instrument were assessed. In stage 2 (n?=?192), a cross-sectional study was conducted and exploratory factor analysis was used to examine the structure of themes that emerged from the qualitative analysis as a means of furthering construct validation. The SCISPC reliability and predictive validity on the daily consumption of sweetened products were also assessed. In stage 1, six themes and 40-items describing the situational contexts of sweetened product consumption emerged from the qualitative analysis and were used to construct the first draft of the SCISPC. In stage 2, factor analysis enabled the clarification and/or expansion of the instrument's initial thematic structure. The revised SCISPC has seven factors and 31 items describing the situational contexts of sweetened product consumption. Initial validation of the instrument indicated it has excellent internal consistency and adequate test-retest reliability. Two factors of the SCISPC had predictive validity for the daily consumption of total sugar from sweetened products (Snacking and Energy demands) while the other factors (Socialization, Indulgence, Constraints, Visual Stimuli and Emotional needs) were rather associated to occasional consumption of these products.

Moubarac, Jean-Claude; Cargo, Margaret; Receveur, Olivier; Daniel, Mark

2012-01-01

445

Context Modeling: Context as a Dressing of a Focus  

Microsoft Academic Search

Contextual Graphs are a context-based formalism used in various real-world applications. They allow a uniform representation of elements of reasoning and of contexts for describing different human tasks such as diagnosis and interpretation. The representation of reasoning by Contextual Graphs supposes an efficient representation of the knowledge associated with a reasoning. Extending the previous view of (1) context relative to

Juliette Brézillon; Patrick Brézillon

2007-01-01

446

GIS Career Awareness Learning Modules  

NSDL National Science Digital Library

GeoTech Center and San Diego State University present a number of GIS career awareness learning modules.Upon successful completion of these modules, the student will be able to: 1. Understand the value of GIS skills and the potential of GIS career (module 4). 2. Explain the fundamental GIS concepts, coordinate systems, and the idea of Digital Globe (module 1). 3. Describe at least two GIS applications in various industries and careers (module 2). 4. Identify at least two new directions of future GIS research (such as mobile GIS, multimedia, visualization, and participatory GIS (module 3). Materials are available for download in Microsoft Word format, PDF format and RTF format.

2013-01-07

447

Lessons learnt from the participatory design of a mobile care data application in a resource-restricted context  

Microsoft Academic Search

This case describes the participatory process of developing a mobile solution for care givers in a resource-restricted context. The experiences of the designers and developers during this process are shared. mHealth solutions are not yet widely adopted for care giving services and the lessons learnt could be valuable to others designing similar solutions. The literacy level of the care givers

Retha De la Harpe

2012-01-01

448

Language Rights versus Speakers' Rights: On the Applicability of Western Language Rights Approaches in Eastern European Contexts  

ERIC Educational Resources Information Center

The main purpose of the present paper is to draw attention to contexts where two conceptions of linguistic rights--the rights of languages and the rights of speakers--come into conflict. To illustrate such conflict, I will examine justifications of language laws adopted in two post-Soviet countries, Latvia and Ukraine. I will begin with an…

Pavlenko, Aneta

2011-01-01

449

Using students' part-time work as a context for identifying the application of academically acquired knowledge in the workplace  

Microsoft Academic Search

In 2002, Griffith University undertook a strategic improvement initiative entitled the Workplace Learning Project to investigate ways of helping Arts students make explicit their full range of generic and transferable skills developed during their undergraduate degrees. Students used their existing part-time work as a context for reflecting on the value and transferability of the capacities acquired by them in Arts

Irena Yashin-Shaw; Patrick Buckridge; Kay Ferres

450

Semantic Web in the Context Broker Architecture  

Microsoft Academic Search

This document describes a new architecture that ex- ploits Semantic Web technologies for supporting perva- sive context-aware systems. This architecture called Con- text Broker Architecture (CoBrA) differs from other archi- tectures in using the Web Ontology Language OWL for mod- eling ontologies of context and for supporting context rea- soning. Central to our architecture is a broker agent that maintains

Harry Chen; Timothy W. Finin; Anupam Joshi

2004-01-01

451

Context Clues  

NSDL National Science Digital Library

The first way to figure out the meaning of a word is from its context. The context is the other words and sentences that are around the new word. When you figure out the meaning of a word from context, you are making a guess about what the word means. To do this, you use the hints and clues of the other words and sentences. You won't always be right, but many times you will be. You might not be able to guess the exact meaning of a word, but you may be close enough to get the meaning of the sentence it is in. Part I: Watch the following video Prof. Craig ~ Context Clues Video Part II: Take the Context Clues Pre-Test. Record your answers on worksheet. Click on the star symbol to correct your test. Although it says to print your test, PLEASE DON'T! Context Clues Pre-Test Part III: Complete the Context Clues Activity. There are three parts to this activity. You must read and answer each slide. ...

Devitry, Mrs.

2011-04-11

452

Context Clues  

NSDL National Science Digital Library

The first way to figure out the meaning of a word is from its context. The context is the other words and sentences that are around the new word. When you figure out the meaning of a word from context, you are making a guess about what the word means. To do this, you use the hints and clues of the other words and sentences. You won't always be right, but many times you will be. You might not be able to guess the exact meaning of a word, but you may be close enough to get the meaning of the sentence it is in. Part I: Watch the following video Prof. Craig ~ Context Clues Video Part II: Take the Context Clues Pre-Test. Record your answers on worksheet. Click on the star symbol to correct your test. Although it says to print your test, PLEASE DON'T! Context Clues Pre-Test Part III: Complete the Context Clues Activity. There are three parts to this activity. You must read and answer each slide. ...

Branscomb, Mrs.

2011-12-07

453

Technique for Dynamic Composition of Content and Context-Sensitive Mobile Applications: Adaptive Mobile Browers as a Case Study.  

National Technical Information Service (NTIS)

The mobile environment brings new challenges for applications. Mobile usage is spontaneous and applications should be fast to install, start, and use in mobile devices and wireless networks. The wireless network connections offer typically less bandwidth ...

M. Palviainen

2007-01-01

454

Awareness During Anaesthesia  

PubMed Central

Summary Awareness is the postoperative recall of sensory perception during general anaesthesia. The incidence is quoted at 1-2 per every 1000 patients. This rare but serious adverse event can be extremely distressing for both the patient as well as the anaesthesiologist. Awareness during anaesthesia may occur despite apparently sound anaesthetic management and is usually not associated with pain. However, a few cases may experience excruciating pain and have long term neuropsychiatric sequelae like post-traumatic stress disorder. This adverse event can also have serious medicolegal implications. This article addresses the various contributory factors that may predispose to intra-operative awareness. Preventive measures in the preinduction period as well as intraoperatively are discussed, including the use of depth of anaesthesia monitors. Remedial steps to be taken when such an event occurs are also discussed.

Sandhu, K; Dash, HH

2009-01-01

455

The Context Oriented Architecture: Integrating Context into Semantic Web Services  

Microsoft Academic Search

While emerging standards promote the interoperability of Web services, Web services adaptability to user and application context is a requirement yet to be investigated. Web services today encapsulate application and business logic and are candidates for supporting pervasive environments, where adaptability will have added value in all of these domains. In this paper we introduce the context oriented architecture; an

Aisha M. Salama Elsafty; Sherif G. Aly; Ahmed Sameh

2006-01-01

456

Unsupervised, Dynamic Identification of Physiological and Activity Context in Wearable Computing  

Microsoft Academic Search

Context-aware computing describes the situation where a wearable \\/ mobile computer is aware of its user's state and surroundings and modifies its behavior based on this information. We designed, implemented and evaluated a wearable system which can determine typical user context and context transition probabilities online and without external supervision. The system relies on techniques from machine learning, statistical analysis

Andreas Krause; Daniel P. Siewiorek; Asim Smailagic; Jonny Farringdon

2003-01-01

457

Enhancing Ethical Awareness  

ERIC Educational Resources Information Center

|As teachers continue professional development throughout their careers to better serve the educational needs of students who are gifted, it becomes apparent that one of the goals is to strive to increase self-awareness of ethical and moral professional decisions and actions. Often, this requires intentional reminders and deliberate work to…

Montgomery, Diane; Walker, Mary

2012-01-01

458

Assessing Metacognitive Awareness.  

ERIC Educational Resources Information Center

A 52-item inventory was constructed to measure the metacognitive awareness of adults. Items were classified into eight subcomponents under categories of knowledge and regulation of cognition. Two experiments with 307 undergraduates support a 2-factor structure. Implications for assessment are discussed. (SLD)

Schraw, Gregory; Dennison, Rayne Sperling

1994-01-01

459

Fostering Agriculture Environmental Awareness  

Microsoft Academic Search

Agriculture is important to any society, but its activity often has negative impact in the environment. We propose a game, implemented in the on-line virtual world platform Open-Simulator, that gives the opportunity to players to experience the potential effects of agriculture in the environment. The game was built with the purpose of promoting the awareness of agriculture issues, such as,

Rui Prada; Daniel Dias; Helmut Prendinger; Arturo Nakasone

2010-01-01

460

Career Awareness: Grade 6.  

ERIC Educational Resources Information Center

|A broad educational background is necessary to meet ever changing occupational fields, and career education is an approach incorporating career information within the regular school curriculum. For the elementary level, career awareness is the main thrust in this program to integrate students and community. The format for grade six, performance…

Boise City Independent School District, ID.

461

Career Awareness: Grade 3.  

ERIC Educational Resources Information Center

|A broad educational background is necessary to meet ever changing occupational fields, and Career Education is an approach incorporating career information within the regular school curriculum. For the elementary level, career awareness is the main thrust in this program to integrate students and community. The introduction contains the format…

Boise City Independent School District, ID.

462

Career Awareness: Grade 5.  

ERIC Educational Resources Information Center

|A broad educational background is necessary to meet ever changing occupational fields, and career education is an approach incorporating career information within regular school curriculum. For the elementary level, career awareness is the main thrust in this program to integrate students and community. The format for grade five, performance…

Boise City Independent School District, ID.

463

Stroke Awareness in Denmark  

Microsoft Academic Search

Background: This is the first study to examine the awareness of major stroke symptoms and stroke risk factors among the general population in Denmark. Early recognition of stroke warning signs and means of reducing stroke occurrence could improve the treatment and prevention of stroke. Methods: A total of 3,520 subjects were invited to participate in the study, using a web-based,

Thomas Truelsen; Lars-Henrik Krarup

2010-01-01

464

International Agri-Awareness.  

ERIC Educational Resources Information Center

|Technological progress in communication and transportation within the past 30 years has made many areas of the world accessible, as well as interdependent. Failure to understand the concept of interdependency greatly diminishes the potential of all nations and each citizen to appreciate this world community. This agricultural awareness program…

Indiana State Dept. of Education, Indianapolis.

465

Meditation and Relaxation Awareness  

ERIC Educational Resources Information Center

|Children come to schools each day feeling many of the stressors that would normally be attributed to adult experiences. At an early age, children are confronted with situations that may make them anxious or begin to doubt their self-worth. Teachers can help children learn to manage their stress by helping them become more aware of negative…

Napper-Owen, Gloria

2006-01-01

466

Context-Aware Adaptation: A Case Study On Mathematical Notations  

Microsoft Academic Search

Abstract In the last two decades, the World Wide Web has become the universal, and | for many users | main information source. Search engines can eciently,serve daily life information needs due to the enormous redundancy of relevant resources on the web. For educational | and even more so for scientic information needs, the web functions much less eciently:,Scientic publishing

Christine Müller; Michael Kohlhase

2009-01-01

467

Context-Aware Middleware for Anytime, Anywhere Social Networks  

Microsoft Academic Search

Anytime, anywhere social computing requires several support mechanisms and tools, including location and proximity systems, expressive representation models of physical place and user characteristics, and effective social-matching algorithms. Anytime, anywhere social-network computing also requires shared and interoperable vocabularies for modeling location and entity characteristics. Current solutions tend to address only a subset of these issues. We believe that the success

Dario Bottazzi; Rebecca Montanari; Alessandra Toninelli

2007-01-01

468

An Intelligent NPC Framework for Context Awareness in MMORPG  

Microsoft Academic Search

AI (artificial intelligence) is one of the issues in the on-line game, a research that a game character seems to be realistic and is progressing using AI technique. Especially NPC is an important part of the AI researches of on-line game, and it is concerned by a game player and an architect. We proposed an intelligent agent framework to implement

Bong-Keun Lee; Choong-Shik Park; Jae-Hong Kim; Sang-Jo Youk; Keun Ho Ryu

2008-01-01

469

A Ubiquitous Supervisory System Based on Social Context Awareness  

Microsoft Academic Search

We propose a supervisory system that deals with actual situations and social aspects of users in ubiquitous computing environment in this paper. To realize a gentle and safe supervision, we have to consider social relationships between observers and the watched person to give adequate level of privacy to the services. We propose \\

Takuo Suganuma; Kazuhiro Yamanaka; Yoshikazu Tokairin; Hideyuki Takahashi; Norio Shiratori

2008-01-01

470

Role of Context-Awareness for Demand Response Mechanisms  

Microsoft Academic Search

\\u000a Recently due to major changes in the structure of electricity industry and the rising costs of power generation, many countries\\u000a have realized the potential and benefits of smart metering systems and demand response programs in balancing between the supply\\u000a and the demand. DR mechanisms are capable of controlling the user energy consumption according to load conditions and providing\\u000a effective energy

Pari Delir Haghighi; Shonali Krishnaswamy

471

On Living Together UnmarriedAwareness Contexts and Social Interaction  

Microsoft Academic Search

This article examines the practice of youthful unmarried cohabitation among heterosexual couples, most of whom later married. It attempts to identify the contingencies leading to cohabitation, the forms of adaptation to actual or perceived reactions by family to the relationship, and the consequences of these adaptations for the cohabiters and their relations with family. The analysis suggests that cohabitation can

PATRICK G. JACKSON

1983-01-01

472

Need for Context-Aware Topographic Maps in Mobile Devices  

Microsoft Academic Search

Abstract. Recently, along with the breakthrough of the Internet and mobile environment, the development towards screen maps used as intelligent user interfaces appears to be emergent. This means,that if we consider the map,on a mobile device to be one type of a graphical user interface, the same usability issues that occur in other software development ,must also be involved. In

Annu-maaria Nivala; L. Tiina Sarjakoski

2003-01-01

473

A Context-Aware Analysis Scheme for Bloom's Taxonomy  

Microsoft Academic Search

A large body of empirical work in the software comprehension area has focused on the cognitive processes that programmers undertake. However, as yet, little work exists on developing and assessing an encompassing framework within which one can compare the results from these software comprehension studies with one another. Several authors have proposed that Bloom's taxonomy could provide such a framework

Tara Kelly; Jim Buckley

2006-01-01

474

Context Aware Human Computer Interaction for Ubiquitous Learning  

Microsoft Academic Search

In the past year, the majority of conventional learning schemes have been transformed offline, gradually adapting E-Learning\\u000a and M-Learning through the evolution of IT technology. In order to achieve effective learning, existing static schemes of\\u000a learning must be transformed in all domains, to deliver true personalized learning depending on various user characteristics.\\u000a Offering a conceptual background that supports this environment

Chulho Jeong; Eunseok Lee

2007-01-01

475

AGILE: adaptive indexing for context-aware information filters  

Microsoft Academic Search

Information filtering has become a key technology for modern information systems. The goal of an information filter is to route messages to the right recipients (possibly none) according to declarative rules called profiles. In order to deal with high volumes of messages, several index structures have been proposed in the past. The challenge addressed in this paper is to carry

Jens-Peter Dittrich; Peter M. Fischer; Donald Kossmann

2005-01-01

476

Context-Aware Voice-Based Mobile Community  

Microsoft Academic Search

Mobile commerce has increasingly been recognized as one of the most significantly prosperous areas for deploying information technology. This paper aims to advance the value of the information by providing a novel voice-information sharing mechanism. The proposed mechanism is a combination of a location-based information service known as a Killer App and a virtual community that consequently becomes a WCP

Soe-Tsyr Yuan; Kai-Hsiang Peng

477

Location Sensing and Privacy in a Context Aware Computing Environment  

Microsoft Academic Search

This paper presents and evaluates two location sensing algorithms that we have developed and demon- strated. We present comparative accuracy results, com- plexity of training the system, and total power consump- tion required to perform scanning. Our method reduces training complexity by a factor of eight, and yields notice- able better accuracy. The paper also introduces a location information privacy

Asim Smailagic; Daniel P. Siewiorek; Joshua Anhalt; David Kogan; Yang Wang

2001-01-01

478

A COLLABORATIVE, SEMANTIC AND CONTEXT AWARE SEARCH ENGINE Position Paper  

Microsoft Academic Search

Search engines help people to find information in the largest public knowledge system of the world: the Web. Unfortunately its size makes very complex to discover the right information. The users are faced lots of useless results forcing them to select one by one the most suitable. The new generation of search engines evolve from keyword-based indexing and classification to

Manuela Angioni; Roberto Demontis; Massimo Deriu; Emanuela De Vita; Cristian Lai; Ivan Marcialis; Gavino Paddeu; Antonio Pintus; Andrea Piras; Raffaella Sanna; Alessandro Soro; Franco Tuveri

479

Environments to support context and emotion aware visual interaction  

Microsoft Academic Search

The interaction with software systems is often affected by many types of hurdles that induce users to make errors and mistakes, and to break the continuity of their reasoning while carrying out a working task with the computer. As a consequence, negative emotional states, such as frustration, dissatisfaction, and anxiety, may arise. In this paper, we illustrate how the Software

Daniela Foglia; Antonio Piccinno

480

PAD: Policy Aware Data center network  

Microsoft Academic Search

Middle Boxes serve for the security in Data Center Networks (DCNs). Together with the growth of the services and applications in DCNs, flexible and scalable middle box deployment is highly required. The current middle box deployment methods are error prone. In this paper we propose Policy Aware Data center network (PAD), a flexible and scalable middle box provisioning architecture. PAD

Haiwei Xue; Xiong Liu; Xiaoping Feng; Zhien Guo; Yiqi Dai

2011-01-01

481

Awareness of Cyber Laws in Young Singaporeans  

Microsoft Academic Search

Security threats over Internet have necessitated information security awareness among the users. Concern about information security is also on because of financial risks associated with it. Importance of safe computing practices being advocated by several governments, professional organisations, and individuals has impelled the need for secured commercial computer and application systems. Many countries have formulated cyber laws to protect their

Tan Kar Peng; Chennupati K. Ramaiah

2007-01-01

482

Cache aware optimization of stream programs  

Microsoft Academic Search

Effective use of the memory hierarchy is critical for achieving high performance on embedded systems. We focus on the class of streaming applications, which is increasingly prevalent in the embedded domain. We exploit the widespread parallelism and regular communication patterns in stream programs to formulate a set of cache aware optimizations that automatically improve instruction and data locality. Our work

Janis Sermulins; William Thies; Rodric M. Rabbah; Saman P. Amarasinghe

2005-01-01

483

Workshop Summary - ICSE Workshop on Software Engineering for Pervasive Computing Applications, Systems, and Environments (SEPCASE)  

Microsoft Academic Search

This workshop aims to provide a forum for researchers to discuss the state of the art of software engineering practices and research challenges in designing and building pervasive computing systems and applications. Such systems are intended to support seamless mobility of users across different physical spaces by providing context-aware adaptation of their applications in regard to functionality, transparent resource discovery

Anand Tripathi; Roy H. Campbell; Liviu Iftode; Paolo Bellavista

2007-01-01

484

Teaching Students to Use Context Clues in Reading.  

ERIC Educational Resources Information Center

|The use of context clues is basic to the reading act. This paper emphasizes the importance of teaching students to recognize context clues and outlines reasons for teachers' frequent failure to do so. It then suggests ways of helping students become aware of ways context clues can be of value to them as readers and of teaching them to identify…

Whisler, Nancy G.

485

Lean Six Sigma in a service context : A multi-factor application approach in the telecommunications industry  

Microsoft Academic Search

Purpose – The purpose of this paper is to investigate issues related to the application of Lean Six Sigma (L6?) in a service industry. By adopting a case-study approach this paper analytically explores the critical success factors that affect L6? implementation. Design\\/methodology\\/approach – The study adopts a qualitative approach attempting to explore the nature of L6? application in a service

Alexandros G. Psychogios; Jane Atanasovski; Loukas K. Tsironis

2012-01-01

486

Coordinated Computer-Supported Collaborative Learning: Awareness and Awareness Tools  

ERIC Educational Resources Information Center

Traditionally, research on awareness during online collaboration focused on topics such as the effects of spatial information about group members' activities on the collaborative process. When the concept of awareness was introduced to computer-supported collaborative learning, this focus shifted to cognitive group awareness (e.g., information…

Janssen, Jeroen; Bodemer, Daniel

2013-01-01

487

Coordinated Computer-Supported Collaborative Learning: Awareness and Awareness Tools  

ERIC Educational Resources Information Center

|Traditionally, research on awareness during online collaboration focused on topics such as the effects of spatial information about group members' activities on the collaborative process. When the concept of awareness was introduced to computer-supported collaborative learning, this focus shifted to cognitive group awareness (e.g., information…

Janssen, Jeroen; Bodemer, Daniel

2013-01-01

488

Public awareness of stuttering.  

PubMed

The results are reported of a questionnaire study into the awareness of stuttering of lay persons in part of Belgium. 1,362 subjects were interviewed. Questions pertained to various aspects of stuttering including prevalence, onset, gender distribution and occurrence in different cultures, cause, treatment, intelligence and hereditariness. Although most respondents were to some extent familiar with stuttering, their overall knowledge of the disorder appeared generally limited. PMID:10394060

Van Borsel, J; Verniers, I; Bouvry, S

1999-01-01

489

Media Awareness Network: Statistics  

NSDL National Science Digital Library

The Canadian media conglomerate Cochran Communications has provided this compilation of statistics to heighten public awareness of the media industry. Statistics on radio, television, film, video, and Internet ownership, production, and marketing are given in a concise, browsable format. Although Canadian statistics are emphasized, many American and international figures are included and students may benefit from clear bibliographic and web links to a variety of government, think-tank, and news sources.

490

Social awareness and early self-recognition.  

PubMed

Self-recognition by 86 children (14-52 months) was assessed using the mirror mark test in two different social contexts. In the classic mirror task condition, only the child was marked prior to mirror exposure (Classic condition). In the social norm condition, the child, experimenter, and accompanying parent were marked prior to the child's mirror exposure (Norm condition). Results indicate that in both conditions children pass the test in comparable proportion, with the same increase as a function of age. However, in the Norm condition, children displayed significantly more hesitation while removing the mark, often touching it without removing it or, if so, promptly putting the mark back onto their forehead. In the Classic condition, only one child showed such hesitation. These results suggest that from the outset, mirror self-recognition can refer to social awareness. This link is interpreted as the trademark of human self-consciousness, a deeply rooted "looking glass" self-awareness. PMID:22673374

Rochat, Philippe; Broesch, Tanya; Jayne, Katherine

2012-06-04

491

Morphological Awareness in Developmental Dyslexia  

ERIC Educational Resources Information Center

|This study examines morphological awareness in developmental dyslexia. While the poor phonological awareness of dyslexic children has been related to their difficulty in handling the alphabetical principle, less is known about their morphological awareness, which also plays an important part in reading development. The aim of this study was to…

Casalis, Severine; Cole, Pascale; Sopo, Delphine

2004-01-01

492

Multimedia-assisted breathwalk-aware system.  

PubMed

Breathwalk is a science of combining specific patterns of footsteps synchronized with the breathing. In this study, we developed a multimedia-assisted Breathwalk-aware system which detects user's walking and breathing conditions and provides appropriate multimedia guidance on the smartphone. Through the mobile device, the system enhances user's awareness of walking and breathing behaviors. As an example application in slow technology, the system could help meditator beginners learn "walking meditation," a type of meditation which aims to be as slow as possible in taking pace, to synchronize footstep with breathing, and to land every footstep with toes first. In the pilot study, we developed a walking-aware system and evaluated whether multimedia-assisted mechanism is capable of enhancing beginner's walking awareness while walking meditation. Experimental results show that it could effectively assist beginners in slowing down the walking speed and decreasing incorrect footsteps. In the second experiment, we evaluated the Breathwalk-aware system to find a better feedback mechanism for learning the techniques of Breathwalk while walking meditation. The experimental results show that the visual-auditory mechanism is a better multimedia-assisted mechanism while walking meditation than visual mechanism and auditory mechanism. PMID:23203771

Yu, Meng-Chieh; Wu, Huan; Lee, Ming-Sui; Hung, Yi-Ping

2012-12-01

493

O brother, where art thou located?: raising awareness of variability in location tracking for users of location-based pervasive applications  

Microsoft Academic Search

There is a diversity of ways to determine a user's location in a pervasive environment today. On a large scale, this diversity often results in variability of location tracking conditions throughout the environment. For an important class of pervasive applications, which often rely on the ubiquitous availability of location tracking – location-based pervasive applications, the consistency of their behaviour under

Petr Aksenov; Kris Luyten; Karin Coninx

2012-01-01

494

Novel Component Middleware for Building Dependable Sentient Computing Applications  

Microsoft Academic Search

With advances in sensor-based computing and mobile communication, people have started to explore ubiquitous or pervasive computing systems that aim to have computing devices literally available everywhere, making them disappear into the physical environ- ment. Novel ubiquitous computing applications such as intelligent vehicles, smart buildings, and traffic management have special properties that traditional computingapplications do not possess, such as context-awareness,

Maomao Wu; Adrian Friday; Gordon Blair; Thirunavukkarasu Sivaharan; Paul Okanda; Hector Duran; Carl-Fredrik Sørensen; Gregory Biegel; Rene Meier

2004-01-01

495

Applicability of Family Therapy for Chinese Children and Adolescents Suffering from Anorexia Nervosa in a Chinese Context: A Preliminary Study  

Microsoft Academic Search

This article presents the results of a preliminary study that assesses the applicability of family therapy for Chinese adolescents suffering from anorexia nervosa in Hong Kong, an area that had never been studied in the past. A total of 27 Chinese emaciated children and adolescents received family therapy and conventional psychiatric treatment from the university-based family treatment center, in collaboration

Joyce L. C. Ma; Kelly Lai

2009-01-01

496

Context management with programmable mobile networks  

Microsoft Academic Search

We show that the use of context information can significantly improve the services of mobile networking systems. We present an architecture for context management which addresses the specific requirements of mobile networks. Context information is collected at different locations in the network, and then preprocessed before transmitting to the mobile device. Our context management framework clearly separates application independent and

Paulo Mendes; Christian Prehofer; Qing Wei

2003-01-01

497

A Dynamic Theory of Implicit Context  

Microsoft Academic Search

Several distinctions between various concepts of context are discussed: internal vs. external, intrinsic vs. model-based, and implicit vs. explicit. Finally, a dynamic theory of implicit, intrinsic, internal context is briefly discussed and its application to a context-sensitive general cognitive architecture DUAL and a context-sensit ive model of human reasoning, AMBR, are briefly outlined.

Boicho Kokinov

1997-01-01

498

Manufacturing Safety and Awareness  

NSDL National Science Digital Library

The North Carolina Community College System BioNetwork's interactive eLearning tools (IETs) are reusable chunks of training that can be deployed in a variety of courses or training programs. IETs are designed to enhance, not replace hands-on training. Learners are able to enter a hands-on lab experience better prepared and more confident. This particular IET delves into manufacturing safety and awareness, including identifying hazards, risk assessment, and hazard prevention or control. An assessment follows the module to gauge student understanding.

2012-10-15

499

Fatal Light Awareness Program  

NSDL National Science Digital Library

This Toronto based organization was formed to raise awareness about the problems that windows and lighted structures cause for migrating birds. Focusing on tall buildings in urban areas, this Web site provides yet another reason to turn the lights off when not in use. By visiting the BFB Monitoring section, users can view a number of buildings that have been monitored for their nighttime light percentage readings. Other important information relevant to a general audience includes ideas for preventing bird/ window collisions, what to do when an injured bird is found, and important background information on the affected species and significance of these collisions.

1993-01-01

500

Wilderness Awareness School  

NSDL National Science Digital Library

The Wilderness Awareness School is located in Washington, but offers courses in other regions as well. Here, visitors can sign up for the School's newsletter, The FoxDen, and the free NatureSkills Journal. Users may also try the School's free seven-day course, NatureWalk. The site contains sections for both adults and children/young adults. The "Nature Skills" section of the site provides detailed information and visual materials on such things as primitive skills (cordage, starting fire, moccasin making), wild food, plants and trees, birds, animal tracking and much more. This is a great resource for anyone interested in learning more about the study of nature.

2008-02-22