Sample records for context aware applications

  1. Context-aware computing applications

    Microsoft Academic Search

    Bill N. Schilit; Norman Adams; Roy Want

    1994-01-01

    Describes systems that examine and react to an individual's changing context. Such systems can promote and mediate people's interactions with devices, computers and other people, and they can help navigate unfamiliar places. We believe that a limited amount of information covering a person's proximate environment is most important for this form of computing, since the interesting part of the world

  2. Context-Aware Pervasive Computing at Large: Three Example Applications

    E-print Network

    Loke, Seng W. - Loke, Seng W.

    : the situation What is a context-aware pervasive computing system? A system that can respond intelligentlyContext-Aware Pervasive Computing at Large: Three Example Applications Seng W. Loke Department;Context-Awareness in Pervasive Computing Started in Schilit's PhD thesis on context-awareness for mobile

  3. ContextProvider: Context awareness for medical monitoring applications.

    PubMed

    Mitchell, Michael; Meyers, Christopher; Wang, An-I Andy; Tyson, Gary

    2011-01-01

    Smartphones are sensor-rich and Internet-enabled. With their on-board sensors, web services, social media, and external biosensors, smartphones can provide contextual information about the device, user, and environment, thereby enabling the creation of rich, biologically driven applications. We introduce ContextProvider, a framework that offers a unified, query-able interface to contextual data on the device. Unlike other context-based frameworks, ContextProvider offers interactive user feedback, self-adaptive sensor polling, and minimal reliance on third-party infrastructure. ContextProvider also allows for rapid development of new context and bio-aware applications. Evaluation of ContextProvider shows the incorporation of an additional monitoring sensor into the framework with fewer than 100 lines of Java code. With adaptive sensor monitoring, power consumption per sensor can be reduced down to 1% overhead. Finally, through the use of context, accuracy of data interpretation can be improved by up to 80%. PMID:22255520

  4. MDD Approach for the Development of Context-Aware Applications

    Microsoft Academic Search

    Dhouha Ayed; Didier Delanote; Yolande Berbers

    2007-01-01

    Context-aware systems offer entirely new opportunities for application developers and for end users by gathering context informa- tion and adapting systems behavior accordingly. Several context models have been defined and various context-aware middleware has been devel- oped in order to simplify the development of context-aware applications. Unfortunately, the development of an application by using these mid- dleware products introduces several

  5. Model-Driven Design of Context-Aware Applications

    Microsoft Academic Search

    Boris Shishkov; Marten Van Sinderen; J. Cardoso; J. Cordeiro; J. Filipe

    2007-01-01

    In many cases, in order to be effective, software applications need to allow sensitivity to context changes. This implies however additional complexity associated with the need for applications' adaptability (being capable of capturing context, interpreting it and reacting on it). Hence, we envision 3 'musts' that, in combination, are especially relevant to the design of context-aware applications. Firstly, at the

  6. An ultrasonic compass for context-aware mobile applications

    E-print Network

    Wang, Kevin John, 1981-

    2004-01-01

    If we are to realize the everyday benefits promised by pervasive computing and context-aware applications, we must first develop the infrastructure to provide contextual location and orientation information through pervasive ...

  7. Ambient Intelligence: Awareness context application in industrial storage

    E-print Network

    Paris-Sud XI, Université de

    Ambient Intelligence: Awareness context application in industrial storage Ahmed Zouinkhi1, 2 , Eddy products that are equipped with a platform of sensor networks and ambient commu- nication capabilities to increase their security, in a context of ambient intelligence of a deposit for chemical substances

  8. Solar: An Open Platform for Context-Aware Mobile Applications

    E-print Network

    Kotz, David

    Solar: An Open Platform for Context-Aware Mobile Applications Guanling Chen and David Kotz Dept the user state and the physical and computational environ- ment in which they run. Solar is a middleware into the in- frastructure, Solar allows applications to run on thin mo- bile clients more effectively

  9. Poster: a context-aware framework for mobile applications

    Microsoft Academic Search

    Shivsubramani Krishnamoorthy; Ashok Agrawala

    2011-01-01

    The world is seeing two significant trends today -- (a) most of the decisions and actions are performed based on the information available (b) the increasing popularity of smart phones and mobile apps that function in isolated manner. We present Rover 2.0, framework that caters to the development of context-aware mobile applications. As technology is used to augment human capabilities,

  10. The Cricket Compass for ContextAware Mobile Applications

    E-print Network

    The Cricket Compass for Context­Aware Mobile Applications Nissanka B. Priyantha, Allen K. L. Miu,aklmiu,hari,seth}@lcs.mit.edu http://nms.lcs.mit.edu/cricket/ Abstract The ability to determine the orientation of a device compass, knowledge of orientation through the Cricket com- pass attached to a mobile device enhances

  11. The cricket compass for context-aware mobile applications

    Microsoft Academic Search

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

    2001-01-01

    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

  12. Specifying Monitoring and Switching Problems in Context Abstract Context-aware applications monitor changes in

    E-print Network

    Nuseibeh, Bashar

    changes in their operating environment and switch their behaviour to keep satisfying their requirements. Therefore, they must be equipped with the capability to detect variations in their operating context case study. 1. Introduction Context-aware applications monitor changes in their operating environment

  13. Towards model driven design of service-based context-aware applications

    Microsoft Academic Search

    Vincenzo Grassi; Andrea Sindico

    2007-01-01

    Context-aware adaptation is an important feature for pervasive computing applications. In our approach, we intend to support the viewpoint of context-aware adaptation as a crosscutting concern with respect to the core \\

  14. Context-aware adaptation for group communication support applications with dynamic architecture

    E-print Network

    Paris-Sud XI, Université de

    Context-aware adaptation for group communication support applications with dynamic architecture, we propose a refinement-based adaptation approach for the architecture of distributed group-aware and dynamically adaptable architectures. To model the context, we manage simultaneously four parameters

  15. Smart furniture: a platform for context-aware embedded ubiquitous applications

    Microsoft Academic Search

    Hideyuki Tokuda

    2004-01-01

    In ubiquitous computing environment, many embedded computers, sensors, devices, and networks are connected for creating context-aware embedded ubiquitous applications. We often build a smart house or a room to demonstrate such context-aware ubiquitous applications. However, the cost and time for building such a house is a barrier to the deployment of various embedded ubiquitous applications.We have developed Smart Furniture which

  16. The Context Toolkit: Aiding the Development of Context-Aware Applications

    Microsoft Academic Search

    Daniel Salber; Anind K. Dey; Gregory D. Abowd

    1999-01-01

    Context is an important, yet poorly understood and poorlyutilized source of information in interactive computing. Itwill be of particular importance in the new millennium asusers move away from their desktops and into settingswhere their contexts are changing rapidly. Context isdifficult to use because, unlike other forms of user input,there is no common, reusable way to handle it. As a result,context-aware

  17. Rapid prototyping of mobile context-aware applications: the Cyberguide case study

    Microsoft Academic Search

    Sue Long; Rob Kooper; Christopher G. Atkeson

    1996-01-01

    We present the Cyberguide project, in which we arebuilding prototypes of a mobile context-aware tour guidethat provide information to a tourist based on knowledgeof position and orientation. We describe featuresof existing Cyberguide prototypes and discuss researchissues that have emerged in our context-aware applicationsdevelopment in a mobile environment.Keywords: Mobile computing applications, contextawareness,location-dependent applications, hand-helddevices1 IntroductionThe...

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

    Microsoft Academic Search

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

    2005-01-01

    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

  19. A Framework for the Development of Distributed, Context-Aware Adaptive Hypermedia Applications

    Microsoft Academic Search

    Liliana Ardissono; Anna Goy; Giovanna Petrone

    2008-01-01

    The CAWE framework supports the development of context-aware, Service Oriented applications which integrate heterogeneous\\u000a services and customize the cooperation among multiple users. We present the techniques adopted in the framework to manage\\u000a a context-sensitive interaction with the users.

  20. Smart Furniture: A Platform for Creating Context-Aware Ubiquitous Applications Everywhere

    Microsoft Academic Search

    Hideyuki Tokuda

    2004-01-01

    \\u000a In ubiquitous computing environment, many embedded computers, sensors, devices, and networks are connected for creating context-aware\\u000a ubiquitous applications. We often build a smart house or a room to demonstrate such context-aware ubiquitous applications.\\u000a However, the cost and time for building such a house is a barrier to the deployment of various embedded ubiquitous applications.\\u000a \\u000a \\u000a We have developed Smart Furniture which

  1. Acoustic and visual signal based context awareness system for mobile application

    Microsoft Academic Search

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

    2011-01-01

    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

  2. Efficient, Context-Aware Privacy Leakage Confinement for Android Applications without Firmware Modding

    E-print Network

    Yin, Heng

    Efficient, Context-Aware Privacy Leakage Confinement for Android Applications without Firmware of EECS Syracuse University Syracuse, USA heyin@syr.edu ABSTRACT As Android has become the most prevalent operating system in mo- bile devices, privacy concerns in the Android platform are increas- ing. A mechanism

  3. Decoupling context-aware services

    Microsoft Academic Search

    Søren Debois; Arne John Glenstrup; Francesco Zanitti

    2011-01-01

    We present a novel software architecture for context- aware applications based on a distributed, non-monolithic, simple and extensible relational model for representing context; a service-oriented architecture for computing these relations in a decoupled, flexible fashion; and with data driven, event based communication providing the kind of fine grained dynamic service composition required in mobile and volatile environments. A prototype implementation

  4. Context-aware event detection smartphone application for first responders

    NASA Astrophysics Data System (ADS)

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

    2013-05-01

    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.

  5. Context-aware tunable office lighting application and user response

    NASA Astrophysics Data System (ADS)

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

    2013-09-01

    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.

  6. AwareCon: Situation Aware Context Communication

    Microsoft Academic Search

    Michael Beigl; Albert Krohn; Tobias Zimmer; Christian Decker; Philip Robinson

    2003-01-01

    Ubicomp environments impose tough constraints on networks, including immediate communication, low energy consumption, minimal maintenance and ad- ministration. With the AwareCon network, we address these challenges by prescribing an integrated architecture that differs from classical networking by featuring an aware- ness of the surrounding situation and context. In various settings, where AwareCon was implemented on tiny battery driven devices, we

  7. Launching Context-Aware Visualisations

    NASA Astrophysics Data System (ADS)

    Salonen, Jaakko; Huhtamäki, Jukka

    Web is more pervasive than ever: it is being used with an increasing range of browsers and devices for a plethora of tasks. As such, exciting possibilities for information visualisation have become available: data is potentially highly relevant, easy to access and readily available in structured formats. For the task of visualisation, the diversity of the Web is both a challenge and an opportunity: while rich data may be available in well-defined structures, they need to be extracted from an open ecosystem of different data formats and interfaces. In this article, we will present how context-aware visualisations can be launched from target Web applications. Methods for accessing and capturing data and web usage context are presented. We will also present proof-of-concept examples for integrating launchable context-aware visualisations to target applications. We claim that by maintaining loose coupling to target Web applications and combining several data and context capturing methods, visualisations can be effectively launched from arbitrary Web applications with rich usage context information and input data.

  8. Context-Awareness Microarchitecture for Smart Spaces

    Microsoft Academic Search

    Susanna Pantsar-Syväniemi; Jarkko Kuusijärvi; Eila Ovaska

    2011-01-01

    \\u000a Reaching context-awareness is still an open issue in pervasive systems like smart spaces (SS). With the help of context a\\u000a smart space application can react to the current situation or be proactive and take into account coming circumstances. This\\u000a paper describes the ongoing research on how context-awareness - an ability to identify and react - is enabled for the heterogeneous

  9. A model driven approach for context-aware services development

    Microsoft Academic Search

    Hatim Hafiddi; Hicham Baidouri; Mahmoud Nassar; Bouchra El Asri; Abdelaziz Kriouile

    2011-01-01

    Nowadays, context-awareness constitutes an essential aspect for service oriented applications development. Indeed, applications are supposed to react to context changes in order to provide end-users with pertinent services. To deal with such requirement, Context-Aware Service (CAS) has emerged as an underlying software engineering paradigm for context-aware applications development. In this paper, we present a model driven approach that highlights the

  10. A Conceptual Framework and a Toolkit for Supporting the Rapid Prototyping of Context-Aware Applications

    Microsoft Academic Search

    Anind K. Dey; Gregory D. Abowd; Daniel Salber

    2001-01-01

    Abstract: Computing devices and applications are now used beyond the desktop, in diverseenvironments, and this trend toward ubiquitous computing is accelerating. One challenge thatremains in this emerging research field is the ability to enhance the behavior of any applicationby informing it of the context of its use. By context, we refer to any information thatcharacterizes a situation related to the

  11. A Survey of Context-Aware Mobile Computing Research

    Microsoft Academic Search

    Guanling Chen; David Kotz

    2000-01-01

    Context-aware computing is a mobile computing paradigm in which applications can discover and take advantage of contextual information (such as user location, time of day, nearby people and devices, and user activity). Since it was proposed about a decade ago, many researchers have studied this topic and built several context-aware applications to demonstrate the usefulness of this new technology. Context-aware

  12. Context-Aware Computing with Sound

    Microsoft Academic Search

    Anil Madhavapeddy; David Scott; Richard Sharp

    2003-01-01

    We propose audio networking: using ubiquitously available sound hardware (i.e. speakers, sound-cards and microphones) for low- bandwidth, wireless networking. A variety of location- and context-aware applications that use audio networking are presented including a location system, a pick-and-drop interface and a framework for embedding digital attachments in voice notes or telephone conversations. Audio networking has a number of interesting characteristics

  13. User Situational Context: An Essential Challenge to Context Awareness

    ERIC Educational Resources Information Center

    Mowafi, Yaser Abdallah

    2009-01-01

    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 has lacked from reconciling the perception of real-world context exhibited by humans, also known as user context, and…

  14. Provide Context-Aware Advertisements with Interactivity

    Microsoft Academic Search

    Qin Gao; Pei-luen Patrick Rau; Gavriel Salvendy

    2007-01-01

    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.

  15. Intelligent Fashion Interfaces. New challenges of classifying and standardizing for context awareness systems for smart applications of fibre computing in textiles, clothes and homes

    Microsoft Academic Search

    Astrid Ullsperger; BTU Cottbus

    The paper describes challenges of classifying and standardizing processes for context awareness systems for smart applications especially for fibre computing and wearable electronics. The focus will be on applications for intelligent fashion interfaces. One possibility for structuring new functions of embedded or wearable interfaces could be the 7 th skin model. Thinking in the near future especially \\

  16. Context-Aware Recommender Systems

    NASA Astrophysics Data System (ADS)

    Adomavicius, Gediminas; Tuzhilin, Alexander

    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.

  17. A context-aware middleware platform for autonomous application services in dynamic wireless networks

    Microsoft Academic Search

    Nicolas Le Sommer; Frédéric Guidec; Hervé Roussain

    2006-01-01

    Dynamic wireless networks, and especially mobile ad hoc networks, impose new constraints regarding the design and the implementation of service-oriented middleware platforms dedicated to mobile computing. Indeed from now, these platforms must be able to capture the context in which they operate in order to provide the services they host with an abstraction of their running context, and to notify

  18. Context-aware modeling of neuronal morphologies

    PubMed Central

    Torben-Nielsen, Benjamin; De Schutter, Erik

    2014-01-01

    Neuronal morphologies are pivotal for brain functioning: physical overlap between dendrites and axons constrain the circuit topology, and the precise shape and composition of dendrites determine the integration of inputs to produce an output signal. At the same time, morphologies are highly diverse and variant. The variance, presumably, originates from neurons developing in a densely packed brain substrate where they interact (e.g., repulsion or attraction) with other actors in this substrate. However, when studying neurons their context is never part of the analysis and they are treated as if they existed in isolation. Here we argue that to fully understand neuronal morphology and its variance it is important to consider neurons in relation to each other and to other actors in the surrounding brain substrate, i.e., their context. We propose a context-aware computational framework, NeuroMaC, in which large numbers of neurons can be grown simultaneously according to growth rules expressed in terms of interactions between the developing neuron and the surrounding brain substrate. As a proof of principle, we demonstrate that by using NeuroMaC we can generate accurate virtual morphologies of distinct classes both in isolation and as part of neuronal forests. Accuracy is validated against population statistics of experimentally reconstructed morphologies. We show that context-aware generation of neurons can explain characteristics of variation. Indeed, plausible variation is an inherent property of the morphologies generated by context-aware rules. We speculate about the applicability of this framework to investigate morphologies and circuits, to classify healthy and pathological morphologies, and to generate large quantities of morphologies for large-scale modeling. PMID:25249944

  19. Changing Places: Contexts of Awareness in Computing

    Microsoft Academic Search

    Philip E. Agre

    2001-01-01

    By allowing any social institution to structure activity in any place, wireless information services break down the traditional mapping between institutions and places. This phenomenon greatly complicates the analysis of context for purposes of designing context-aware computing systems. Context has a physical, architectural aspect, but most aspects of context will also be defined in institutional terms. This paper develops two

  20. SWRL-based context awareness for application servers hosting digital services

    E-print Network

    Paris-Sud XI, Université de

    is reached), a broker inside the application server notifies the application so that it adapts its behavior. As presented in [13] rules are of the form of an implication between an antecedent (body) and consequent (head

  1. Emotion Ontology for Context Awareness Franck Berthelon

    E-print Network

    Paris-Sud XI, Université de

    Emotion Ontology for Context Awareness Franck Berthelon Laboratoire I3S Sophia-Antipolis, France@polytech.unice.fr Abstract--We present an emotion ontology for describing and reasoning on emotion context in order to improve emotion detection based on bodily expression. We incorporate context into the two-factor theory

  2. Activity Zones for Context-Aware Computing

    E-print Network

    Koile, Kimberle

    2003-06-10

    Location is a primary cue in many context-aware computing systems, and is often represented as a global coordinate, room number, or Euclidean distance various landmarks. A user?s concept of location, however, is often ...

  3. The connector: facilitating context-aware communication

    Microsoft Academic Search

    Maria Danninger; G. Flaherty; Keni Bernardin; Hazim Kemal Ekenel; T. Köhler; Robert Malkin; Rainer Stiefelhagen; Alex Waibel

    2005-01-01

    We present the Connector, a context-aware service that intelligently connects people. It maintains an awareness of its users' activities, preoccupations and social relationships to mediate a proper connection at the right time between them. In addition to providing users with important contextual cues about the availability of potential callees, the Connector adapts the behavior of the contactee's device automatically in

  4. Configuring a Context-Aware Middleware for Wireless Sensor Networks

    PubMed Central

    Gámez, Nadia; Cubo, Javier; Fuentes, Lidia; Pimentel, Ernesto

    2012-01-01

    In the Future Internet, applications based on Wireless Sensor Networks will have to support reconfiguration with minimum human intervention, depending on dynamic context changes in their environment. These situations create a need for building these applications as adaptive software and including techniques that allow the context acquisition and decisions about adaptation. However, contexts use to be made up of complex information acquired from heterogeneous devices and user characteristics, making them difficult to manage. So, instead of building context-aware applications from scratch, we propose to use FamiWare, a family of middleware for Ambient Intelligence specifically designed to be aware of contexts in sensor and smartphone devices. It provides both, several monitoring services to acquire contexts from devices and users, and a context-awareness service to analyze and detect context changes. However, the current version of FamiWare does not allow the automatic incorporation related to the management of new contexts into the FamiWare family. To overcome this shortcoming, in this work, we first present how to model the context using a metamodel to define the contexts that must to be taken into account in an instantiation of FamiWare for a certain Ambient Intelligence system. Then, to configure a new context-aware version of FamiWare and to generate code ready-to-install within heterogeneous devices, we define a mapping that automatically transforms metamodel elements defining contexts into elements of the FamiWare family, and we also use the FamiWare configuration process to customize the new context-aware variant. Finally, we evaluate the benefits of our process, and we analyze both that the new version of the middleware works as expected and that it manages the contexts in an efficient way. PMID:23012505

  5. Need for context-aware computing in astrophysics

    E-print Network

    Banhatti, Dilip G

    2008-01-01

    The example of disk galaxy rotation curves is given for inferring dark matter from redundant computational procedure because proper care of astrophysical and computational context was not taken. At least three attempts that take the context into account have not found adequate voice because of haste in wrongly concluding existence of dark matter on the part of even experts. This firmly entrenched view, prevalent for about 3/4ths of a century, has now become difficult to correct. Context-awareness must be borne in mind at every step to avoid such a situation. Perhaps other examples exist. Keywords: dark matter; disk galaxy; rotation curve; context-awareness. Topics: Algorithms; Applications.

  6. Studying mobile context-aware social services in the wild

    Microsoft Academic Search

    Paul Holleis; Matthias Wagner; Sebastian Böhm; Johan Koolwaaij

    2010-01-01

    We have implemented and evaluated IYOUIT, a context-aware application for the mobile phone that promotes a digital lifestyle, sharing, and life-logging approach for people on the go. The service incorporates context management technology to abstract data about and around the user into meaningful interpretations of the user's digital trace in the real world. Complementary to the public release of our

  7. Context-aware personal navigation using embedded sensor fusion in smartphones.

    PubMed

    Saeedi, Sara; Moussa, Adel; El-Sheimy, Naser

    2014-01-01

    Context-awareness is an interesting topic in mobile navigation scenarios where the context of the application is highly dynamic. Using context-aware computing, navigation services consider the situation of user, not only in the design process, but in real time while the device is in use. The basic idea is that mobile navigation services can provide different services based on different contexts-where contexts are related to the user's activity and the device placement. Context-aware systems are concerned with the following challenges which are addressed in this paper: context acquisition, context understanding, and context-aware application adaptation. The proposed approach in this paper is using low-cost sensors in a multi-level fusion scheme to improve the accuracy and robustness of context-aware navigation system. The experimental results demonstrate the capabilities of the context-aware Personal Navigation Systems (PNS) for outdoor personal navigation using a smartphone. PMID:24670715

  8. Context-Aware Personal Navigation Using Embedded Sensor Fusion in Smartphones

    PubMed Central

    Saeedi, Sara; Moussa, Adel; El-Sheimy, Naser

    2014-01-01

    Context-awareness is an interesting topic in mobile navigation scenarios where the context of the application is highly dynamic. Using context-aware computing, navigation services consider the situation of user, not only in the design process, but in real time while the device is in use. The basic idea is that mobile navigation services can provide different services based on different contexts—where contexts are related to the user's activity and the device placement. Context-aware systems are concerned with the following challenges which are addressed in this paper: context acquisition, context understanding, and context-aware application adaptation. The proposed approach in this paper is using low-cost sensors in a multi-level fusion scheme to improve the accuracy and robustness of context-aware navigation system. The experimental results demonstrate the capabilities of the context-aware Personal Navigation Systems (PNS) for outdoor personal navigation using a smartphone. PMID:24670715

  9. Distributed mediation of imperfectly sensed context in aware environments

    E-print Network

    Abowd, Gregory D.

    -Out Board for the home and a situation-aware reminder tool. KEYWORDS: context-aware computing, distributedDistributed mediation of imperfectly sensed context in aware environments Anind K. Dey, Jennifer context-aware services make the assumption that the context they are dealing with is correct. However

  10. Context-Aware Computing: A Test Case

    Microsoft Academic Search

    Jenna Burrell; Geri Gay; Kiyo Kubo; Nick Farina

    2002-01-01

    Through an iterative design approach, we have proposed and evaluated ways of incorporating user-created information into context-aware systems. We implemented and tested a location-sensitive college campus tour guide called Campus Aware that allows users to annotate physical spaces with text notes. The goal was to provide visitors to the campus with a sense of the activities going on in the

  11. An Infrastructure Approach to Context-Aware Computing

    Microsoft Academic Search

    Jason I. Hong; James A. Landay

    2001-01-01

    The Context Toolkit (Dey, Salber, and Abowd 2001 [this special issue]) is only oneof many possible architectures for supporting context-aware applications. In this essay,we look at the trade-offs involved with a service infrastructure approach to context-awarecomputing. We describe the advantages that a service infrastructure for contextawarenesshas over other approaches, outline some of the core technical challenges thatmust be addressed before

  12. Data-Centric Middleware for Context-Aware Pervasive Computing Guanling Chen

    E-print Network

    Kotz, David

    if not carefully managed. To minimize user distraction the applications must be aware of and adapt to the situationData-Centric Middleware for Context-Aware Pervasive Computing Guanling Chen , Ming Li , and David and deploying context-aware pervasive-computing applications calls for distributed software infrastructures

  13. A System Architecture for Context-Aware Mobile Computing

    Microsoft Academic Search

    William Noah Schilit

    1995-01-01

    A System Architecture for Context-Aware Mobile Computing William Noah Schilit Computer applications traditionally expect a static execution environment. However, this precondition is generally not possible for mobile systems, where the world around an application is constantly changing. This thesis explores how to support and also exploit the dynamic configurations and social settings characteristic of mobile systems. More specifically, it advances

  14. Context-aware Computing: a Survey Preparing a Generalized Approach

    Microsoft Academic Search

    Robert Schmohl; Uwe Baumgarten

    2008-01-01

    Present approaches utilizing awareness of context specialize on their unique domain of em- ployment. Although similarities between those ap- proaches exist, the concepts and systems utilized in this context are vastly heterogeneous. Our goal is the abstraction of the current situation in context- aware computing and the development of generalized concepts for approaching the development of context- aware systems. We

  15. A wearable context aware system for ubiquitous healthcare.

    PubMed

    Kang, Dong-Oh; Lee, Hyung-Jik; Ko, Eun-Jung; Kang, Kyuchang; Lee, Jeunwoo

    2006-01-01

    Recent developments of information technologies are leading the advent of the era of ubiquitous healthcare, which means healthcare services at any time and at any places. The ubiquitous healthcare service needs a wearable system for more continual measurement of biological signals of a user, which gives information of the user from wearable sensors. In this paper, we propose a wearable context aware system for ubiquitous healthcare, and its systematic design process of a ubiquitous healthcare service. Some wearable sensor systems are introduced with Zigbee communication. We develop a context aware framework to send information from wearable sensors to healthcare service entities as a middleware to solve the interoperability problem between sensor makers and healthcare service providers. And, we propose a systematic process of design of ubiquitous healthcare services with the context aware framework. In order to show the feasibility of the proposed system, some application examples are given, which are applied to remote monitoring, and a self check service. PMID:17947132

  16. Context & Environmental Aware Wireless Sensor Networks for Reconfigurable Manufacturing Systems

    E-print Network

    Howitt, Ivan

    the RMS application 802.11 AP 802.11 to Bluetooth Gateway · Sensor & Actuator · Monitoring & Control Maintenance & Diagnostics Corporate Network 802.11 AP 802.11 to Bluetooth Gateway · Sensor & AcContext & Environmental Aware Wireless Sensor Networks for Reconfigurable Manufacturing Systems

  17. Cyberguide: A mobile context-aware tour guide

    Microsoft Academic Search

    Gregory D. Abowd; Christopher G. Atkeson; Jason I. Hong; Sue Long; Rob Kooper; Mike Pinkerton

    1997-01-01

    Future computing environments will free the user from the constraints of the desktop. Applications for a mobile environment should take advantage of contextual information, such as position, to offer greater services to the user. In this paper, we present the Cyberguide project, in which we are building prototypes of a mobile context-aware tour guide. Knowledge of the user's current location,

  18. Context-Aware Telephony over WAP ALBRECHT SCHMIDT

    E-print Network

    Schmidt, Albrecht

    to share context to enhance the social quality of remote mobile communication. We provide an analysis on the influence of the situation. Than this is compared to the way remote communication is initiated using mobile awareness, communication setup, mobile telephony, social communication, wireless application protocol (WAP

  19. Need for context-aware computing in astrophysics

    E-print Network

    Dilip G. Banhatti

    2008-06-02

    The example of disk galaxy rotation curves is given for inferring dark matter from redundant computational procedure because proper care of astrophysical and computational context was not taken. At least three attempts that take the context into account have not found adequate voice because of haste in wrongly concluding existence of dark matter on the part of even experts. This firmly entrenched view, prevalent for about 3/4ths of a century, has now become difficult to correct. The right context must be borne in mind at every step to avoid such a situation. Perhaps other examples exist. Keywords: dark matter; disk galaxy; rotation curve; context-awareness. Topics: Algorithms; Applications.

  20. Activity-oriented context-aware adaptation assisting mobile geo-spatial activities

    Microsoft Academic Search

    Guoray Cai; Yinkun Xue

    2006-01-01

    Human geospatial activities often involves the use of geographic information in mobile environment where the context of technology use is dynamic, complex, and unstable, creating unique challenges in designing effective mobile mapping applications. Enhancing the context awareness of the computing device can improve the usability of mobile map applications, but the potentially large number of contexts (physical context, computing context,

  1. Context Awareness in a Handheld Exercise Agent

    PubMed Central

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

    2009-01-01

    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. PMID:20161031

  2. Modeling Context Aware Interaction for Wayfinding using Mobile Devices

    E-print Network

    Bremen, Universität

    Modeling Context Aware Interaction for Wayfinding using Mobile Devices Chao Li CASA, University@informatik.uni-bremen.de ABSTRACT In this paper, we introduce and implement a model for context- aware interaction, and demonstrate the challenge of modeling context-awareness in dynamic interaction arising from wayfinding and navigation

  3. A Semantic e-Wallet to Reconcile Privacy and Context Awareness

    E-print Network

    Sadeh, Norman M.

    by context aware applications. Another challenge, as we move towards more open platforms for access to a user is to provide a Semantic Web environ- ment for open access to a user's contextual resources, thereby reducing and between. We argue that what is needed is a more open environment, where context-aware applications can

  4. Chameleon: Context-Awareness inside DBMSs Hicham G. Elmongui #1

    E-print Network

    Mokbel, Mohamed F.

    Chameleon: Context-Awareness inside DBMSs Hicham G. Elmongui #1 , Walid G. Aref #2 , Mohamed F-- Context is any information used to characterize the situation of an entity. Examples of contexts includetime, location, identity, and activity of a user. This paper proposes a general context-aware DBMS

  5. MIThril: context-aware computing for daily life

    Microsoft Academic Search

    Richard W. DeVaul; Steven J. Schwartz

    MIThril is a functional, operational body-worn computing architecture for context-aware human- computer interaction research and general-purpose wearable computing applications. It is ergonomic, flexible, and designed to be integrated into ordinary street clothing. The MIThril architecture combines a multi-protocol body bus and body network, inte- grating a range of sensors, interfaces, and comput- ing cores. At the time of this writing,

  6. The Conference Assistant: Combining Context-Awareness with Wearable Anind K. Dey, Daniel Salber, Gregory D. Abowd

    E-print Network

    Abowd, Gregory D.

    The Conference Assistant: Combining Context-Awareness with Wearable Computing Anind K. Dey, Daniel 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

  7. Technical Feasibility of a Mobile Context-Aware (Social) Learning Schedule Framework

    ERIC Educational Resources Information Center

    Yau, Jane Y. K.; Joy, Mike

    2013-01-01

    The purpose of this paper is to show the technical feasibility of implementing their mobile context-aware learning schedule (mCALS) framework as a software application on a mobile device using current technologies, prior to its actual implementation. This process draws a set of compatible mobile and context-aware technologies at present and can be…

  8. 12th International Conference on Construction Application of Virtual Reality A FRAMEWORK FOR UTILIZING CONTEXT-AWARE AUGMENTED

    E-print Network

    Kamat, Vineet R.

    perceptions and how they expect the instructional materials to be presented in a classroom setting. This paper deliver location-aware instructional materials to students in real time. The objective of this research. At the same time, the influence of interactive social media in every aspect of daily life has changed student

  9. Solving LR Conflicts Through Context Aware Scanning

    NASA Astrophysics Data System (ADS)

    Leon, C. Rodriguez; Forte, L. Garcia

    2011-09-01

    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.

  10. Policy Based Control of Context Aware Pervasive Services

    E-print Network

    Loke, Seng W. - Loke, Seng W.

    Policy Based Control of Context Aware Pervasive Services Evi Syukur1 and Seng Wai Loke2 1 School awareness is important if we want to give a mobile user autonomous, responsive and attentive services issues regarding location modeling, system design and implementation of simple awareness scenarios

  11. Activity-oriented Context-aware Adaptation Assisting Mobile Geo-spatial Activities

    E-print Network

    Klippel, Alexander

    Activity-oriented Context-aware Adaptation Assisting Mobile Geo-spatial Activities Guoray Cai awareness of the computing device can improve the usability of mobile map applications, but the potentially in mobile computing applications. Categories and Subject Descriptors H.5.2 [Information Interfaces

  12. Semantic Web Technologies to Reconcile Privacy and Context Awareness

    E-print Network

    as a Semantic Web Service. A key objective is to provide a Semantic Web environment for open access to a userSemantic Web Technologies to Reconcile Privacy and Context Awareness Fabien L. Gandon and Norman M;Semantic Web Technologies to Reconcile Privacy and Context Awareness 2 Keywords: Semantic Web, Multi

  13. Context-aware Trust Evaluation Functions for Dynamic Reconfigurable Systems

    Microsoft Academic Search

    Santtu Toivonen; Gabriele Lenzini; Ilkka Uusitalo

    2006-01-01

    We acknowledge the fact that situational details can have impact on the trust that a Trustor assigns to some Trustee. Motivated by that, we discuss and formalize functions for determining context-aware trust. A system implementing such functions takes into account the Trustee's profile real- ized by what we call quality attributes. Furthermore, the system is aware of some context attributes

  14. A data fusion framework for context-aware mobile services

    Microsoft Academic Search

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

    2008-01-01

    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

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

    Microsoft Academic Search

    Jenna Burrell; Geri K Gay

    2002-01-01

    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

  16. An SoC-Based Context-Aware System Architecture

    Microsoft Academic Search

    Keon-myung Lee; Bong Ki Sohn; Jong Tae Kim; Seung Wook Lee; Ji Hyong Lee; Jae Wook Jeon; Jundong Cho

    2004-01-01

    \\u000a Context-aware computing has been attracting the attention as an approach to alleviating the inconvenience in human-computer\\u000a interactions. This paper proposes a context-aware system architecture to be implemented on an SoC (System-on-a-Chip). The\\u000a proposed architecture supports sensor abstraction, notification mechanism for context changes, modular development, easy service\\u000a composition using if-then rules, and flexible context-aware service implementation. It consists of the communication

  17. A Multi-Agent-Based Architecture for Enterprise Customer and Supplier Cooperation Context-Aware Information Systems

    Microsoft Academic Search

    Liu Xiang

    2007-01-01

    The fast-growing and tremendous amount of enterprise customer and supplier documents has far exceeded the human ability for comprehension. A enterprise customer and supplier cooperation context-aware information system is powerful tools to process cooperating customer and supplier information. While there has been a variety of context middleware infrastructures and context-aware applications, little work has been done on integrating context-aware into

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

    E-print Network

    Greenberg, Saul

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

  19. ENABLING CONTEXT-AWARE SERVICES FOR MOBILE USERS

    Microsoft Academic Search

    Jukka Riekki; Oleg Davidyuk; Jari Forstadius; Junzhao Sun; Jaakko Sauvola

    We present an architecture that offers a set of gen eric services for building context-aware mobile app lications. We present two realized prototypes that recognize user 's context, learn his routines, use context informa tion to constrain service discovery as well as to find relevant infor mation, and manage connectivity on the basis of the given policy. Further, the user

  20. Context and Situation-Awareness in Information Logistics

    Microsoft Academic Search

    Ulrich Meissen; Stefan Pfennigschmidt; Agnès Voisard; Tjark Wahnfried

    2004-01-01

    Abstract. In order to deliver relevant information at the right time to its mobile users, systems such as event notification systems need to be aware of the users’ context (e. g., time, location, used devices). Many context frameworks have been introduced in the past few years. However, they usually do not consider the no- tion of characteristic features of contexts

  1. Bluetooth-Assisted Context-Awareness in Educational Data Networks

    ERIC Educational Resources Information Center

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

    2005-01-01

    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…

  2. Modeling privacy control in context-aware systems

    Microsoft Academic Search

    Xiaodong Jiang; J. A. Landay

    2002-01-01

    Significant complexity issues challenge designers of context-aware systems with privacy control. Information spaces provide a way to organize information, resources, and services around important privacy-relevant contextual factors. In this article, we describe a theoretical model for privacy control in context-aware systems based on a core abstraction of information spaces. We have previously focused on deriving socially based privacy objectives in

  3. A FRAMEWORK FOR THE MANAGEMENT OF CONTEXT-AWARE WORKFLOW SYSTEMS

    Microsoft Academic Search

    Liliana Ardissono; Roberto Furnari; Anna Goy; Giovanna Petrone; Marino Segnan

    This paper presents the CAWE framework for the context-aware management of applications based on the composition of Web Services in complex workflows. We introdu ce a representation of context-dependent activities based on an abstraction hierarchy which supports the specification of synthetic and clear workflows. Moreover, we propose a framework architecture which enriches the capabilities of a workflow engine in order

  4. An Interactive Context-aware Power Management Technique for Optimizing Sensor Network Lifetime

    E-print Network

    Simunic, Tajana

    Wisconsin, USA measuring several key limnological variables. coral reef ecologists [18], [19] showsAn Interactive Context-aware Power Management Technique for Optimizing Sensor Network Lifetime management technique that adapts sampling rate as a function of both application-level context (e.g., user

  5. Evaluating Confidence in Context for Context-Aware Security

    Microsoft Academic Search

    Marc Lacoste; Gilles Privat; Fano Ramparany

    2007-01-01

    We propose a software framework that augments context data with a range of assorted confidence\\/reputation metadata for dimensions\\u000a such as security, privacy, safety, reliability, or precision, defined according to a generic context confidence ontology.\\u000a These metadata are processed through the network of federated distributed software services that support the acquisition,\\u000a aggregation\\/fusion and interpretation of context, up to its exploitation by

  6. Context-aware Querying for Multimodal Search Engines

    E-print Network

    Cortes, Corinna

    Context-aware Querying for Multimodal Search Engines Jonas Etzold1 , Arnaud Brousseau2 , Paul Grimm, and the design of search engines, and also raises the need for extending search tasks beyond textual queries and output of data. In this paper, we present our work in the context of the I-SEARCH project, which aims

  7. Using Ontologies for Modeling Context-Aware Services Platforms

    E-print Network

    van Sinderen, Marten

    Using Ontologies for Modeling Context-Aware Services Platforms Diego Rios1 , Patrícia Dockhorn Sinderen1 Abstract. This paper discusses the suitability of using ontologies for modeling context user requirements. Such challenges are mainly related to gathering, modelling, storing, distributing

  8. Towards a Better Understanding of Context and Context-Awareness

    Microsoft Academic Search

    Gregory D. Abowd; Anind K. Dey; Peter J. Brown; Nigel Davies; Mark Smith; Pete Steggles

    1999-01-01

    When humans talk with humans, they are able to use implicit situational information, or context, to increase the conversational bandwidth. Unfortunately, this ability to convey ideas does not transfer well to humans interacting with computers. In tradi-tional interactive computing, users have an impoverished mechanism for providing input to computers. By improving the computer's access to context, we increase the richness

  9. Management challenges of context-aware learning

    NASA Astrophysics Data System (ADS)

    Pankowska, Malgorzata

    2015-02-01

    The work covers different definitions of context and the explanation of the context value for university learning organization and management. The thesis of the paper is as follows: students' focus on sources of context has impact on their knowledge acquisition and determines students' profiles and learning process, within which the teachers support de-contextualization, i.e., generalization of experience and knowledge. The work emphasizes the meaning of mobile devices in university learning process. The paper presents the value of BYOD (bring-your-own-device) strategy at universities and opportunities for m-education. The student survey results are presented to emphasize the value of that strategy. Beyond that, the students' preferences towards open source software and open learning materials are also discussed and evaluated by student survey. Finally, the process of contextualization and de-contextualization is developed for support the learning at university level.

  10. Intimate Location Modeling for Context Aware Computing

    Microsoft Academic Search

    Mark Burnett; Paul Prekop; Chris Rainsford

    This paper describes some of the complexity that needs be captured in any location model of an intimate environment. We take the position that a location model for such an environment must be part of a wider framework for handling context that includes knowledge of people, devices and their communication abilities. We present an ontology based on a general object

  11. Geolocation server - Coordinates become context aware

    Microsoft Academic Search

    Thore Fechner; M. Kritzler; A. Kru?ger

    2010-01-01

    Localization and tracking technologies are rapidly evolving and have a huge impact on our daily life. Most of the available tracking or localization technologies use a coordinate based approach. They describe the current location through a set of coordinates. Although the position is described sufficiently with this set of coordinates, the circumjacent context is not. This work describes an approach

  12. Context-Aware Exception Handling in Mobile Agent Systems: The MoCA Case

    E-print Network

    Newcastle upon Tyne, University of

    Catholic University of Rio de Janeiro ­ PUC-Rio, Brazil 2 Computing Department, Lancaster University, UK 3 prototype context-aware collaborative applications built with the MoCA (Mobile Collaboration Architecture to support the construction of mobile agent-based applications. Their underlying architecture rely

  13. Context-Aware Online Commercial Intention Detection

    NASA Astrophysics Data System (ADS)

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

    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.

  14. Siren: Context-aware Computing for Firefighting

    Microsoft Academic Search

    Xiaodong Jiang; Nicholas Y. Chen; Jason I. Hong; Kevin Wang; Leila Takayama; James A. Landay

    2004-01-01

    Based on an extensive field study of current firefighting practices, we have developed a system called Siren to support tacit communication between firefighters with multiple levels of redundancy in both communication and user alerts. Siren provides a foundation for gathering, integrating, and distributing contextual data, such as location and temperature. It also simplifies the devel- opment of firefighting applications using

  15. Semantic Web Technologies to Reconcile Privacy and Context Awareness

    E-print Network

    objective is to provide a Semantic Web environment for open access to a user's contextual resources, therebySemantic Web Technologies to Reconcile Privacy and Context Awareness Fabien L. Gandon and Norman M automated identification and access of personal resources, each represented as a Semantic Web Service. A key

  16. Cost Efficient Data Collection of Sensory Originated Data using Context-Aware Mobile Devices

    Microsoft Academic Search

    Prem Prakash Jayaraman; Arkady Zaslavsky; Jerker Delsing

    2008-01-01

    Sensory originated data collection and processing has always been a big challenge in wireless sensor networks (WSN). WSN represent a distributed producer of large amount of valuable data required by varied number of applications. In this paper we propose the use of context aware data mules (CADAMULE) as a solution for smart data collection within sensor networks. We present an

  17. An integrated communications framework for context aware continuous monitoring with body sensor networks

    Microsoft Academic Search

    Francesco Chiti; Romano Fantacci; Francesco Archetti; Enza Messina; Daniele Toscani

    2009-01-01

    This paper deals with a wireless pervasive communication system to support advanced healthcare applications. The proposed system is based on an ad hoc interaction of mobile body sensor networks with independent wireless sensor networks already deployed within the environments in order to allow a continuous and context aware health monitoring for patients along their daily life scenarios with an unprecedented

  18. Patient satisfaction in a context-aware hospital guidance system.

    PubMed

    Kim, Eunhye; Yoo, Sooyoung; Hee, Hwang; Park, Hyunchul; Kim, Gunhee; Ha, Sungdo

    2012-01-01

    This paper presents the design of a system for a context-aware guidance service for hospital outpatients. Many patients have difficulties in knowing what to do and where to go due to the complexity of hospital-related processes and building structures. The intelligent hospital of the future will evolve in a smart way to automatically provide patients' smart mobile devices with relevant guidance information regarding their tasks, location, and process. In this study, we developed a context-aware-based hospital digital guidance system and evaluated ser satisfaction with respect to outpatient visits. From our pilot experiments with 15 outpatients, they were satisfied with the service. We believe that such a smart system would be a promising model for developing the intelligent hospitals of the future. PMID:22874392

  19. Efficient Network Management for Context-Aware Participatory Sensing

    Microsoft Academic Search

    Chi Harold Liu; Pan Hui; Chatschick Bisdikian; Joel W. W. Branch; Bo Yang

    2011-01-01

    Participatory sensing is becoming more popular with the help of sensor-embedded smartphones to retrieve context-aware information for users. However, new challenges arise for the maintenance of the energy supply, the support of the quality-of-information (QoI) requirements, and the generation of maximum revenue for network operator, but with sparsely research exposure. This paper proposes a novel efficient network management framework to

  20. Context-Aware Interaction in a Mobile Environment

    Microsoft Academic Search

    Daniela Fogli; Fabio Pittarello; Augusto Celentano; Piero Mussio

    2003-01-01

    \\u000a This paper addresses context awareness of user interaction in real spaces where a number of places devoted to interaction\\u000a are defined, following a concept called interaction locus (IL). In the IL a coordinated set of information notifies the user about the specific nature of the place he\\/she has currently\\u000a entered. The interaction takes place through mobile devices which manage the

  1. Developing a Context-Aware System for Providing Intelligent Robot Services

    Microsoft Academic Search

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

    2006-01-01

    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

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

    ERIC Educational Resources Information Center

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

    2009-01-01

    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…

  3. An Intelligent Broker for Context-Aware Systems University of Maryland

    E-print Network

    Finin, Tim

    (CoBrA) ­ a new architecture for supporting context-aware systems in smart spaces. Our architecture an intelligent meeting room. Keywords Context-aware systems, smart spaces, semantic web, agent architecture 1 that aims to help devices, services and agents to become context aware in smart spaces

  4. Context modeling and reasoning

    E-print Network

    Appelrath, Hans-Jürgen

    Applications Sentient Computing Smart * (Room, Space, Factory, ...) #12;Context-aware applications #12;10 User, Context-aware Applications (SFB 627)Universität Stuttgart #12;2 SFB 627 (Nexus): World Models for Mobile Context-Aware Systems Goals: Methods to realize global world model Innovative context-aware applications

  5. Achieving Co-Operation and Developing Smart Behavior in Collections of Context-Aware Artifacts

    Microsoft Academic Search

    Christos Goumopoulos; Achilles Kameas

    One of the most exciting and important recent developments in ubiquitous computing (UbiComp) is to make everyday appliances,\\u000a devices, and objects context aware. A context-aware artifact uses sensors to perceive the context of humans or other artifacts\\u000a and to respond sensibly to it. Adding context awareness to artifacts can increase their usability and enable new interactions\\u000a and user experiences. The

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

    PubMed

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

    2013-01-01

    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

  7. A Methodology and a Web Platform for the Collaborative Development of Context-Aware Systems

    PubMed Central

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

    2013-01-01

    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

  8. Situation awareness and virtual globes: Applications for disaster management

    NASA Astrophysics Data System (ADS)

    Tomaszewski, Brian

    2011-01-01

    This paper presents research on the use of virtual globes to support the development of disaster event situation awareness in humans via open source information analysis and visualization. The key technology used for this research is the Context Discovery Application (CDA), which is a geovisual analytic environment designed to integrate implicit geographic information with Google Earth™. A case study of humanitarian disaster management is used to demonstrate the unique abilities of the CDA and Google Earth TM to support situation awareness. The paper provides some of the first empirical evidence on the utility of the virtual globes to support situation awareness for disaster management using implicit geographic information. The evidence presented was derived from evaluations by disaster management practitioners at the United Nations (UN) ReliefWeb project, an extremely relevant, yet difficult group to access for conducting academic disaster management research. Finally, ideas for future research on developing virtual globe applications to support situation awareness are described.

  9. A RFID-based Campus Context-Aware Notification System

    E-print Network

    Haron, Nazleeni S; Hasan, Mohd H; Ariffin, Mazeyanti M; Aziz, Izzatdin A

    2010-01-01

    This paper presents the design and development of a context-aware notification system for university students using RFID technology. This system is leveraging on the student's matrix card as the RFID tag (sensor), RFID reader and server as the processors and screen monitor at the various locations in the campus as the actuator of the output. This system aims to deliver urgent notifications to the intended students immediately at their respective locations. In addition, the system is also able to display personalized information based on the students' preferences and current location when accessing the system. The background of the study, the design approaches for this system and the preliminary evaluation of the prototype are presented in this paper. The evaluation results have indicated that the the proposed system is useful and easy to use.

  10. Semantic web technologies to reconcile privacy and context awareness

    Microsoft Academic Search

    Fabien L. Gandon; Norman M. Sadeh

    2004-01-01

    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

  11. The Context-Aware Pill Bottle and Medication Monitor Anand Agarawala1

    E-print Network

    Greenberg, Saul

    The Context-Aware Pill Bottle and Medication Monitor Anand Agarawala1 , Saul Greenberg1-aware pill bottle/stand that reminds the elderly when it is time to take their medication. A medication-aware pill bottle/stand to remind elderly users when it is time to take their medication, and a medication

  12. An FSM model for situation-aware mobile application software systems

    Microsoft Academic Search

    Yu Wang

    2004-01-01

    Situation-awareness is a desirable feature of application software systems in mobile computing environments. In this paper, we present an extended finite state machine model for the situation-aware mobile application software systems. In this model, each state represents an impromptu condition that a system is presented, and the state is characterized by the historical context record and the internal action record.

  13. A Context Aware Interruption Management System for Mobile Devices

    Microsoft Academic Search

    Sina Zulkernain; Praveen Madiraju; Sheikh Iqbal Ahamed

    2010-01-01

    \\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

  14. Creating an Open Agent Environment for Context-Aware M-Commerce

    E-print Network

    Sadeh, Norman M.

    Creating an Open Agent Environment for Context-Aware M-Commerce Norman M. Sadeh, Ting-Chak (Enoch agents to (semi-)automatically dis- cover and access them. Such openness could one day play a key roleCampus, an agent-based environment for context-aware mobile services, which we are in the process of developing

  15. An Expert System-based Context-Aware Ubiquitous Learning Approach for Conducting Science Learning Activities

    ERIC Educational Resources Information Center

    Wu, Po-Han; Hwang, Gwo-Jen; Tsai, Wen-Hung

    2013-01-01

    Context-aware ubiquitous learning has been recognized as being a promising approach that enables students to interact with real-world learning targets with supports from the digital world. Several researchers have indicated the importance of providing learning guidance or hints to individual students during the context-aware ubiquitous learning…

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

    ERIC Educational Resources Information Center

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

    2012-01-01

    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,…

  17. Survey on Context-Aware Publish/Subscribe systems for VANET

    E-print Network

    Paris-Sud XI, Université de

    Survey on Context-Aware Publish/Subscribe systems for VANET Mickaël Royer, Alain Pirovano, Fabien of mobile networks such as VANETs is still an open research topic. In particular, the communication needs a survey on these context-aware publish / subscribe solutions for VANETs. We will particularly focus our

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

    ERIC Educational Resources Information Center

    Chen, Chia-Chen; Huang, Tien-Chi

    2012-01-01

    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…

  19. The Design of a Context-Aware Home Media Space: Carman Neustaedter & Saul Greenberg

    E-print Network

    Greenberg, Saul

    The Design of a Context-Aware Home Media Space: The Video Carman Neustaedter & Saul Greenberg media spaces have been proven to be ineffective for compromising home situations involving a media space. As such, we present the rationale and prototype design of a context-aware home media space (HMS

  20. Towards Context-Aware Task Recommendation Chuong Cong Vo, Torab Torabi and Seng W. Loke

    E-print Network

    Loke, Seng W. - Loke, Seng W.

    Towards Context-Aware Task Recommendation Chuong Cong Vo, Torab Torabi and Seng W. Loke Department and what tasks a PCE supports. Our ongoing research aims to minimise this overload by proposing a context-aware and relevant tasks for users according to user's situation and environment capabilities. This paper formalises

  1. Modelling and Verifying of Medical Diagnosis System Based on Context-Awareness Framework

    Microsoft Academic Search

    Shujun Zou; Kaiyu Wan; Zongyuan Yang

    2010-01-01

    Medical Diagnosis System is widely used in health care domain. Nowadays, advent of the era of Medical Diagnosis System means healthcare services at any time and at any places, which leads to advance studying and exploring of Medical Diagnosis Systems based on context-awareness framework. As a typical complex and widely used context aware system, reliable and complete designment of Medical

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

    ERIC Educational Resources Information Center

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

    2010-01-01

    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…

  3. Agile Application-Aware Adaptation for Mobility

    E-print Network

    Brian D. Noble; M. Satyanarayanan; Dushyanth Narayanan; James Eric Tilton; Jason Flinn; Kevin R. Walker

    1997-01-01

    In this paper we show that application-aware adaptation, a collaborative partnership between the operating system and applications, offers the most general and effective approach to mobile information access. We describe the design of Odyssey, a prototype implementing this approach, and show how it

  4. Agile Application-Aware Adaptation for Mobility

    Microsoft Academic Search

    Brian D. Noble; Mahadev Satyanarayanan; Dushyanth Narayanan; James Eric Tilton; Jason Flinn; Kevin R. Walker

    1997-01-01

    In this paper we show that application-aware adaptation, a collaborative partnership between the operating system and applications, offers the most general and effective approach to mobile information access. We describe the design of Odyssey, a prototype implementing this approach, and show how it supports concurrent execution of diverse mobile ap- plications. We identify agility as a key attribute of adap-

  5. Context-aware recommendation using rough set model and collaborative filtering

    Microsoft Academic Search

    Zhengxing Huang; Xudong Lu; Huilong Duan

    2011-01-01

    Context has been identified as an important factor in recommender systems. Lots of researches have been done for context-aware\\u000a recommendation. However, in current approaches, the weights of contextual information are the same, which limits the accuracy\\u000a of the results. This paper aims to propose a context-aware recommender system by extracting, measuring and incorporating significant\\u000a contextual information in recommendation. The approach

  6. Development Context Driven Change Awareness and Analysis Framework

    NASA Technical Reports Server (NTRS)

    Sarma, Anita; Branchaud, Josh; Dwyer, Matthew B.; Person, Suzette; Rungta, Neha

    2014-01-01

    Recent work on workspace monitoring allows conflict prediction early in the development process, however, these approaches mostly use syntactic differencing techniques to compare different program versions. In contrast, traditional change-impact analysis techniques analyze related versions of the program only after the code has been checked into the master repository. We propose a novel approach, De- CAF (Development Context Analysis Framework), that leverages the development context to scope a change impact analysis technique. The goal is to characterize the impact of each developer on other developers in the team. There are various client applications such as task prioritization, early conflict detection, and providing advice on testing that can benefit from such a characterization. The DeCAF framework leverages information from the development context to bound the iDiSE change impact analysis technique to analyze only the parts of the code base that are of interest. Bounding the analysis can enable DeCAF to efficiently compute the impact of changes using a combination of program dependence and symbolic execution based approaches.

  7. Development Context Driven Change Awareness and Analysis Framework

    NASA Technical Reports Server (NTRS)

    Sarma, Anita; Branchaud, Josh; Dwyer, Matthew B.; Person, Suzette; Rungta, Neha; Wang, Yurong; Elbaum, Sebastian

    2014-01-01

    Recent work on workspace monitoring allows conflict prediction early in the development process, however, these approaches mostly use syntactic differencing techniques to compare different program versions. In contrast, traditional change-impact analysis techniques analyze related versions of the program only after the code has been checked into the master repository. We propose a novel approach, DeCAF (Development Context Analysis Framework), that leverages the development context to scope a change impact analysis technique. The goal is to characterize the impact of each developer on other developers in the team. There are various client applications such as task prioritization, early conflict detection, and providing advice on testing that can benefit from such a characterization. The DeCAF framework leverages information from the development context to bound the iDiSE change impact analysis technique to analyze only the parts of the code base that are of interest. Bounding the analysis can enable DeCAF to efficiently compute the impact of changes using a combination of program dependence and symbolic execution based approaches.

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

    PubMed

    Curiel, Pablo; Lago, Ana B

    2013-01-01

    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

  9. A context-based approach to training situation awareness

    Microsoft Academic Search

    Elllen J. Bass; John P. Zenyuh; Ronald L. Small; Samuel T. Fortin

    1996-01-01

    Historically, a significant number of accidents in complex systems have been attributed to a lack of situation awareness (SA). Despite increased use of automation and improvements in display design to improve SA, re-design is unable to completely eliminate accidents of these types. One viable option is to train operators to acquire and to maintain situation awareness. We propose employing expert

  10. ONTOLOGY FOR CONTEXT-AWARE VISUALIZATION OF SPATIAL DATA IN MOBILE DEVICES

    Microsoft Academic Search

    O. Akcay; O. Altan

    Recently, the visualization of the spatial data is gaining importance in the ubiquitous computing. In geoinformatics such as distributed GIS or Location Based Services, context models are responsible for the robust communication between the mobile user and the system. Context-aware systems are considerable issue in ubiquitous systems, reflecting delicate effect of the designed context leads us to ontologies. To develop

  11. iPhone iPad 50 Context-aware computing PARCTAB

    E-print Network

    Ouhyoung, Ming

    PC PC 1 2 3 2 2 PC iPhone iPad 50 [1] Context-aware computing PARCTAB Smart and Automated Home AwareHome House_n Persuasive Technology Playful Bottle [3] UbiGreen [6] Simple and Deployable Technology [18] Panoramic [19] 1 #12;6 1 contextual information XEROX PARC's PARCTAB GPS1 RFID2 WiFi3 / [2] Aware

  12. Look Who's Talking : mechanisms for sharing interpersonal context and social titles as awareness information

    E-print Network

    Adcock, Matthew Graham

    2007-01-01

    Mobile awareness systems aim to convey personal context information between people in a way that is less intrusive, somewhat automatic, and often much more persistent than a phone call. Although there are many ways in which ...

  13. AwareCon: Situation Aware Context Communication Michael Beigl,Albert Krohn, Tobias Zimmer, Christian Decker, Philip Robinson

    E-print Network

    Beigl, Michael

    ] ) cur- rently have no built-in notion of context awareness in their protocol stacks. Today, or standards for wireless personal area networks such as Bluetooth or IrDA, form the communications backbone in offices and homes, while Bluetooth and IrDA are convenient replacements for cables between devices

  14. Towards a flexible middleware for context-aware pervasive and wearable systems.

    PubMed

    Muro, Marco; Amoretti, Michele; Zanichelli, Francesco; Conte, Gianni

    2012-11-01

    Ambient intelligence and wearable computing call for innovative hardware and software technologies, including a highly capable, flexible and efficient middleware, allowing for the reuse of existing pervasive applications when developing new ones. In the considered application domain, middleware should also support self-management, interoperability among different platforms, efficient communications, and context awareness. In the on-going "everything is networked" scenario scalability appears as a very important issue, for which the peer-to-peer (P2P) paradigm emerges as an appealing solution for connecting software components in an overlay network, allowing for efficient and balanced data distribution mechanisms. In this paper, we illustrate how all these concepts can be placed into a theoretical tool, called networked autonomic machine (NAM), implemented into a NAM-based middleware, and evaluated against practical problems of pervasive computing. PMID:22527692

  15. Towards Scatterbox: a Context-Aware Message Forwarding Platform

    E-print Network

    Hammerton, James

    propose a more dynamic context- driven approach to content delivery, that integrates information from and forwarding. 1 Introduction Rich sources of context data are an integral part of building intelligent of extra sensory equipment like gyroscopes, accelerometers and GPS receivers. In addition, communi- cation

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

    ERIC Educational Resources Information Center

    Shih, Wen-Chung; Tseng, Shian-Shyong

    2009-01-01

    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…

  17. Context-Aware Group Services in Proximity-Based Mobile Social Networks

    E-print Network

    Groups exist in mobile users' social interactions Groups can be used for apps based on informationContext-Aware Group Services in Proximity-Based Mobile Social Networks Na Yu and Dr. Qi Han (http contexts into contacts to generate user mobility profiles with PoI visits and contacts; - Construct

  18. Context Inference for Mobile Applications in the UPCASE Project

    NASA Astrophysics Data System (ADS)

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

    The growing processing capabilities of mobile devices coupled 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 particular point in time is one of the main challenges in this area. In this paper, we describe the approach pursued in the UPCASE project, which makes use of sensors available in the mobile device as well as sensors externally connected via Bluetooth. We describe the system architecture from raw data acquisition to feature extraction and context inference. As a proof of concept, the inference of contexts is based on a decision tree to learn and identify contexts automatically and dynamically at runtime. Preliminary results suggest that this is a promising approach for context inference in several application scenarios.

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

    PubMed Central

    Martini, Maria G.; Hewage, Chaminda T. E. R.

    2010-01-01

    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

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

    Microsoft Academic Search

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

    2012-01-01

    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

  1. A Framework for Context-Aware Services Using Service Customizer

    E-print Network

    Sartipi, Kamran

    the situation of a service requester or provider such as client's identity, location, and resources, as well the network traffic as well as the cost of using the service. · If a client's context is sensitive, a service provider needs to generate general service responses as well as customization knowledge

  2. A fast algorithm for context-aware buffer insertion

    Microsoft Academic Search

    Ashok Jagannathan; Sung-Woo Hur; John Lillis

    2000-01-01

    We study the problem of performing buffer insertion in the context of a given layout in a practical situation, there are restrictions on where buffers may be inserted while routing over such regions may be possible (e.g., due to the presence of macro cells). As a result, it is desirable to perform route planning and biffer insertion simultaneously. Further it

  3. A fast algorithm for context-aware buffer insertion

    Microsoft Academic Search

    Ashok Jagannathan; Sung-Woo Hur; John Lillis

    2002-01-01

    We study the problem of performing buffer insertion in the context of a given layout. In a practical situation, there are restrictions on where buffers may be inserted; for instance, it may be possible to route wires over a preplaced macro cell, but may not be possible to insert buffers in that region. As a result, it is desirable to

  4. Context-Aware Intelligent Assistant Approach to Improving Pilot's Situational Awareness

    NASA Technical Reports Server (NTRS)

    Spirkovska, Lilly; Lodha, Suresh K.

    2004-01-01

    Faulty decision making due to inaccurate or incomplete awareness of the situation tends to be the prevailing cause of fatal general aviation accidents. Of these accidents, loss of weather situational awareness accounts for the largest number of fatalities. We describe a method for improving weather situational awareness through the support of a contextaware,domain and task knowledgeable, personalized and adaptive assistant. The assistant automatically monitors weather reports for the pilot's route of flight and warns her of detected anomalies. When and how warnings are issued is determined by phase of flight, the pilot s definition of acceptable weather conditions, and the pilot's preferences for automatic notification. In addition to automatic warnings, the pilot is able to verbally query for weather and airport information. By noting the requests she makes during the approach phase of flight, our system learns to provide the information without explicit requests on subsequent flights with similar conditions. We show that our weather assistant decreases the effort required to maintain situational awareness by more than 5.5 times when compared to the conventional method of in-flight weather briefings.

  5. CyberDesk: a framework for providing self-integrating context-aware services Anind K. Deya,

    E-print Network

    Abowd, Gregory D.

    CyberDesk: a framework for providing self-integrating context-aware services Anind K. Deya CyberDesk, a framework for self-integrating software in which integration is driven by user context components work together. 1998 Elsevier Science B.V. All rights reserved. Keywords: Context-aware computing

  6. SenSay: A Context-Aware Mobile Phone

    NSDL National Science Digital Library

    Furukawa, Junichi

    Mobile phone users must be conscious of their phone's settings wherever they go, and are required to adjust settings such as ring volume and vibration depending on the surrounding environment. This research paper introduces SenSay, an intelligent mobile phone system developed at Carnegie Mellon University that is designed to eliminate the constant attention required by current mobile phones. "It adapts to dynamically changing environmental and physiological states and also provides the remote caller information on the current context of the phone user." The paper outlines the capabilities of SenSay and provides details of the system architecture and implementation.

  7. Abstract--In open, heterogeneous, context-aware pervasive computing systems, suitable context models and reasoning

    E-print Network

    Loke, Seng W. - Loke, Seng W.

    developed with concepts from the state-space model, describing context and situations as geometrical, termed "Context Spaces", which describes context and situations using geometrical metaphors and concepts from the stat-space model [15]. Based on this model we present an approach to reason about situations

  8. A practical indoor context-aware surveillance system with multi-Kinect sensors

    NASA Astrophysics Data System (ADS)

    Jia, Lili; You, Ying; Li, Tiezhu; Zhang, Shun

    2014-11-01

    In this paper we develop a novel practical application, which give scalable services to the end users when abnormal actives are happening. Architecture of the application has been presented consisting of network infrared cameras and a communication module. In this intelligent surveillance system we use Kinect sensors as the input cameras. Kinect is an infrared laser camera which its user can access the raw infrared sensor stream. We install several Kinect sensors in one room to track the human skeletons. Each sensor returns the body positions with 15 coordinates in its own coordinate system. We use calibration algorithms to calibrate all the body positions points into one unified coordinate system. With the body positions points, we can infer the surveillance context. Furthermore, the messages from the metadata index matrix will be sent to mobile phone through communication module. User will instantly be aware of an abnormal case happened in the room without having to check the website. In conclusion, theoretical analysis and experimental results in this paper show that the proposed system is reasonable and efficient. And the application method introduced in this paper is not only to discourage the criminals and assist police in the apprehension of suspects, but also can enabled the end-users monitor the indoor environments anywhere and anytime by their phones.

  9. Texture and color descriptors as a tool for context-aware patch-based image inpainting

    NASA Astrophysics Data System (ADS)

    Ruži?, Tijana; Pižurica, Aleksandra

    2012-03-01

    State-of-the-art results in image inpainting are obtained with patch-based methods that fill in the missing region patch-by-patch by searching for similar patches in the known region and placing them at corresponding locations. In this paper, we introduce a context-aware patch-based inpainting method, where the context is represented by texture and color features of a block surrounding the patch to be filled in. We use this context to recognize other blocks in the image that have similar features and then we constrain the search for similar patches within them. Such an approach guides the search process towards less ambiguous matching candidates, while also speeding up the algorithm. Experimental results demonstrate benefits of the proposed context-aware approach, both in terms of inpainting quality and computation time.

  10. A QoS-Aware Routing Protocol for Real-time Applications in Wireless Sensor Networks

    E-print Network

    Cherian, Mary

    2012-01-01

    The paper presents a quality of service aware routing protocol which provides low latency for high priority packets. Packets are differentiated based on their priority by applying queuing theory. Low priority packets are transferred through less energy paths. The sensor nodes interact with the pivot nodes which in turn communicate with the sink node. This protocol can be applied in monitoring context aware physical environments for critical applications.

  11. Context-Aware Team Task Allocation to Support Mobile Police Surveillance

    Microsoft Academic Search

    Jan Willem Streefkerk; Myra P. Van Esch-bussemakers; Mark A. Neerincx

    2009-01-01

    To optimally distribute tasks within police teams during mobile surveillance, a context-aware task allocation system is designed\\u000a and evaluated with end-users. This system selects and notifies appropriate team members of current incidents, based on context\\u000a information (officer availability, officer proximity to the incident and incident priority) and decision rules. Eight teams\\u000a of three experienced police officers evaluated this system in

  12. Adaptive Context-Aware Filter Fusion for Face Recognition on Bad Illumination

    Microsoft Academic Search

    Mi Young Nam; Phill-kyu Rhee

    2006-01-01

    At present, the performance of face recognition system depends much on the variations in illumination. To solve this problem,\\u000a this paper presents an adaptable face recognition approach that uses filter fusion representation. The key idea is to use\\u000a context-aware filter fusion to get better image from a bad illumination one. Genetic algorithm is the tool for adaptation\\u000a for individual context

  13. Context-Aware Design for Process Flexibility and Adaptation

    ERIC Educational Resources Information Center

    Yao, Wen

    2012-01-01

    Today's organizations face continuous and unprecedented changes in their business environment. Traditional process design tools tend to be inflexible and can only support rigidly defined processes (e.g., order processing in the supply chain). This considerably restricts their real-world applications value, especially in the dynamic and…

  14. Context-Aware Security model for Social Network Service

    Microsoft Academic Search

    Hyundong Lee; Mokdong Chung

    2011-01-01

    The number of smart phone-users is rapidly growing due to the recent increase in wireless Internet usage, the development of a variety of applications, the activation of social networks, and so on. The smart phone has the benefits of mobility and convenience, but has the serious security problems. To utilize social network services in the smart phone, a flexible integrated

  15. Experiences of developing and deploying a context-aware tourist guide: the GUIDE project

    Microsoft Academic Search

    Keith Cheverst; Nigel Davies; Keith Mitchell; Adrian Friday

    2000-01-01

    The GUIDE system has been developed to provide city visitors with a hand-held context-aware tourist guide. The system has been successfully deployed in a major tourist destination and is currently at the stage where it is publicly available to visitors who wish to explore the city. Reaching this stage has been the culmination of a number of distinct research efforts.

  16. Design and implementation of baby-care service based on context-awareness for digital home

    Microsoft Academic Search

    HyunJeong Lee; Shin Young Lim; JaeDoo Huh

    2005-01-01

    In this paper, we design and implement baby-care service based on context-awareness in digital home, where sensors are widespread for collecting raw data and a home server exists for triggering automatic services according to the baby's situation. We describe a scenario and techniques, design and implement system architecture and service flows for this service. Using our scheme, we can take

  17. Context, Ontology and Portfolio: Key Concepts for a Situational Awareness Knowledge Portal

    Microsoft Academic Search

    Marlène Gauvin; Anne-claire Boury-brisset; Alain Auger

    2004-01-01

    The vision leading the development of a situational awareness knowledge portal to support the Canadian National Defence Command Center in monitoring and directing strategic-level operations is to provide each individual with a customized, mission-oriented knowledge desktop that gives access to the right information from multiple sources in the context of the work and contributes to the building and sharing of

  18. TaxiMedia: An Interactive Context-Aware Entertainment and Advertising System

    E-print Network

    TaxiMedia: An Interactive Context-Aware Entertainment and Advertising System Florian Alt1 , Alireza vehicles, such as trams, buses, and taxis as an advertising space is increasing since several years. However mainly the outside of the vehicles is used to show advertisements using paintings, foil or roof

  19. Toward Context and Preference-Aware Location-based Mohamed F. Mokbel Justin J. Levandoski

    E-print Network

    Mokbel, Mohamed F.

    five minutes of my route"), food and drink finder ("Where is my nearest fast food restaurantToward Context and Preference-Aware Location-based Services Mohamed F. Mokbel Justin J. Levandoski,justin@cs.umn.edu} ABSTRACT The explosive growth of location-detection devices, wireless communications, and mobile databases

  20. Context-Aware Adaptation for Mobile Devices Tayeb Lemlouma and Nabil Layada

    E-print Network

    Paris-Sud XI, Université de

    Context-Aware Adaptation for Mobile Devices Tayeb Lemlouma and Nabil Layaïda WAM Project, INRIA.Layaida}@inrialpes.fr Abstract This paper discusses the problem of content adaptation for mobile devices. The adaptation independent model is defined and used in order to achieve automatic adaptation of the content based on its

  1. Context Aware Multiparty Session Support for Adaptive Multicasting in Heterogeneous Mobile Networks

    E-print Network

    Pitsillides, Andreas

    by the competition with the Internet world and their quick time-to-market service provisioning. YouTube, Apple iTunes context-aware, adaptive multiparty sessions in a heterogeneous system by illustrating how to add elements of these subgroups in the form of content stream descriptions to the media delivery function for obtaining

  2. Criteria, Strategies and Research Issues of Context-Aware Ubiquitous Learning

    ERIC Educational Resources Information Center

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

    2008-01-01

    Recent progress in wireless and sensor technologies has lead to a new development of learning environments, called context-aware ubiquitous learning environment, which is able to sense the situation of learners and provide adaptive supports. Many researchers have been investigating the development of such new learning environments; nevertheless,…

  3. Visual and Tangible Interactions with Physical and Virtual Objects Using Context-aware RFID

    E-print Network

    California at Los Angeles, University of

    1 Visual and Tangible Interactions with Physical and Virtual Objects Using Context-aware RFID Jae Radio Frequency Identification (RFID) has recently received a lot of attention as an augmentation and interface technology with physical and virtual objects in the ubiquitous computing domain. As RFID tags can

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

    ERIC Educational Resources Information Center

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

    2011-01-01

    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…

  5. A Longitudinal Study of English-Major Turkish Students' Pragmatic Awareness in an EFL Context

    ERIC Educational Resources Information Center

    Bulut, Dogan

    2008-01-01

    This paper presents the results of a longitudinal study which examined the development of the Turkish EFL learners' pragmatic awareness in an EFL context in a four-year period. The data which were originally collected from American native speakers and used by Bulut and Ozkan (2005) were also used in this study as the baseline to compare Turkish…

  6. International Journal of Advanced Robotic Systems Heterogeneous Context-Aware Robots

    E-print Network

    Veloso, Manuela M.

    International Journal of Advanced Robotic Systems Heterogeneous Context-Aware Robots Providing Turck1 1 Department of Information Technology, Ghent University - IBBT, Ghent, Belgium 2 Robotics Group the original work is properly cited. Abstract Existing robot guides offer a tour of a building

  7. Exploiting the icon arrangement on mobile devices as information source for context-awareness

    Microsoft Academic Search

    Matthias Böhmer; Gernot Bauer

    2010-01-01

    The contextual relevance of a service can only be determined by the human himself. However, a measure for relevance is required for context-aware service delivery. In this paper, we draw attention to icon arrangement on mobile devices as a new source of information for adaptive menus. We conducted contextual inquiries to investigate how people arrange icons on a grid-based menu.

  8. iMuseumA: an agent-based context-aware intelligent museum system.

    PubMed

    Ayala, Inmaculada; Amor, Mercedes; Pinto, Mónica; Fuentes, Lidia; Gámez, Nadia

    2014-01-01

    Currently, museums provide their visitors with interactive tour guide applications that can be installed in mobile devices and provide timely tailor-made multimedia information about exhibits on display. In this paper, we argue that mobile devices not only could provide help to visitors, but also to museum staff. Our goal is to integrate, within the same system, multimedia tour guides with the management facilities required by museums. In this paper, we present iMuseumA (intelligent museum with agents), a mobile-based solution to customize visits and perform context-aware management tasks. iMuseumA follows an agent-based approach, which makes it possible to interact easily with the museum environment and make decisions based on its current status. This system is currently deployed in the Museum of Informatics at the Informatics School of the University of Málaga, and its main contributions are: (i) a mobile application that provides management facilities to museum staff by means of sensing and processing environmental data; (ii) providing an integrated solution for visitors, tour guides and museum staff that allows coordination and communication enrichment among different groups of users; (iii) using and benefiting from group communication for heterogeneous groups of users that can be created on demand. PMID:25390409

  9. iMuseumA: An Agent-Based Context-Aware Intelligent Museum System

    PubMed Central

    Ayala, Inmaculada; Amor, Mercedes; Pinto, Mónica; Fuentes, Lidia; Gámez, Nadia

    2014-01-01

    Currently, museums provide their visitors with interactive tour guide applications that can be installed in mobile devices and provide timely tailor-made multimedia information about exhibits on display. In this paper, we argue that mobile devices not only could provide help to visitors, but also to museum staff. Our goal is to integrate, within the same system, multimedia tour guides with the management facilities required by museums. In this paper, we present iMuseumA (intelligent museum with agents), a mobile-based solution to customize visits and perform context-aware management tasks. iMuseumA follows an agent-based approach, which makes it possible to interact easily with the museum environment and make decisions based on its current status. This system is currently deployed in the Museum of Informatics at the Informatics School of the University of Málaga, and its main contributions are: (i) a mobile application that provides management facilities to museum staff by means of sensing and processing environmental data; (ii) providing an integrated solution for visitors, tour guides and museum staff that allows coordination and communication enrichment among different groups of users; (iii) using and benefiting from group communication for heterogeneous groups of users that can be created on demand. PMID:25390409

  10. Power-aware applications for scientific cluster and distributed computing

    E-print Network

    David Abdurachmanov; Peter Elmer; Giulio Eulisse; Paola Grosso; Curtis Hillegas; Burt Holzman; Ruben L. Janssen; Sander Klous; Robert Knight; Shahzad Muzaffar

    2014-10-22

    The aggregate power use of computing hardware is an important cost factor in scientific cluster and distributed computing systems. The Worldwide LHC Computing Grid (WLCG) is a major example of such a distributed computing system, used primarily for high throughput computing (HTC) applications. It has a computing capacity and power consumption rivaling that of the largest supercomputers. The computing capacity required from this system is also expected to grow over the next decade. Optimizing the power utilization and cost of such systems is thus of great interest. A number of trends currently underway will provide new opportunities for power-aware optimizations. We discuss how power-aware software applications and scheduling might be used to reduce power consumption, both as autonomous entities and as part of a (globally) distributed system. As concrete examples of computing centers we provide information on the large HEP-focused Tier-1 at FNAL, and the Tigress High Performance Computing Center at Princeton University, which provides HPC resources in a university context.

  11. CASPER: context-aware scheme for paired-end reads from high-throughput amplicon sequencing

    PubMed Central

    2014-01-01

    Merging the forward and reverse reads from paired-end sequencing is a critical task that can significantly improve the performance of downstream tasks, such as genome assembly and mapping, by providing them with virtually elongated reads. However, due to the inherent limitations of most paired-end sequencers, the chance of observing erroneous bases grows rapidly as the end of a read is approached, which becomes a critical hurdle for accurately merging paired-end reads. Although there exist several sophisticated approaches to this problem, their performance in terms of quality of merging often remains unsatisfactory. To address this issue, here we present a context-aware scheme for paired-end reads (CASPER): a computational method to rapidly and robustly merge overlapping paired-end reads. Being particularly well suited to amplicon sequencing applications, CASPER is thoroughly tested with both simulated and real high-throughput amplicon sequencing data. According to our experimental results, CASPER significantly outperforms existing state-of-the art paired-end merging tools in terms of accuracy and robustness. CASPER also exploits the parallelism in the task of paired-end merging and effectively speeds up by multithreading. CASPER is freely available for academic use at http://best.snu.ac.kr/casper. PMID:25252785

  12. NCBO Technology: Powering semantically aware applications

    PubMed Central

    2013-01-01

    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

  13. Context Awareness for a Smart Environment Utilizing Context Maps and Dempster-Shafer Theory

    E-print Network

    Marsland, Stephen

    routines, #12;health condition, etc. A context variable is a property of the environment that can of daily living [1]. To aid the person whenever necessary a smart home system firstly must recognize what depends on the particular inhabitant, it is often manifold, and includes: daily, weekly, and monthly

  14. Augmenting memory for student learning: Designing a context-aware capture system for biology education

    Microsoft Academic Search

    Deborah Barreau; Abe Crystal; Jane Greenberg; Anuj Sharma; Michael Conway; John Oberlin; Michael Shoffner; Stephen Seiberling

    2006-01-01

    The Memex Metadata for Student Portfolios (M2) project is using mobile technology to augment student memory and improve student learning. We have constructed a student-targeted Context Awareness Framework (CAF) and we are developing a metadata scheme that integrates the CAF with a variety of mobile technologies. In particular, we are exploring the use of Microsoft SenseCams, which capture images and

  15. Context-aware 3D visualization and collaboration services for ubiquitous cars using augmented reality

    Microsoft Academic Search

    Jae Yeol Lee; Guewon Rhee

    2008-01-01

    Context-aware, ubiquitous computing is a vision of our future computing lifestyle in which computer systems seamlessly integrate\\u000a into our everyday lives, providing services and information in anywhere and anytime fashion. Augmented reality (AR) can naturally\\u000a complement ubiquitous computing by providing an intuitive and collaborative visualization and simulation interface to a three-dimensional\\u000a information space embedded within physical reality. This paper presents

  16. CHASE: Context-Aware Heterogenous Adaptive Smart Environments Using Optimal Tracking for Resident's Comfort

    Microsoft Academic Search

    Navrati Saxena; Abhishek Roy; Jitae Shin

    2007-01-01

    An information-theoretic, optimal framework is developed for tracking the residents in a Context-aware Heterogenous Adaptive\\u000a Smart Environments (CHASE). The framework envisions that each individual sensor-system operates fairly independently, and\\u000a does not require public knowledge of individual topologies. The resident-tracking problem is formulated in terms of weighted\\u000a entropy. The framework is truly universal and provides an optimal, online learning and prediction

  17. Just-for-us: a context-aware mobile information system facilitating sociality

    Microsoft Academic Search

    Jesper Kjeldskov; Jeni Paay

    2005-01-01

    Mobile computer technologies are increasingly being appropriated and used to facilitate people's social life outside the work domain. Addressing this emerging domain of use, we present the design of a context-aware mobile information system prototype facilitating sociality in public places: Just-for-Us. The design of the prototype system was informed by two empirical studies: an architectural analysis of a recently built

  18. The Role of Context-Aware Computing in Support of People with Dementia

    NASA Astrophysics Data System (ADS)

    Baumgarten, Matthias; Mulvenna, Maurice D.

    There is a strong motivation, in particular in the domain of healthcare, for new perspectives on context-driven research and computing in order to provide next-generation services to people that are tailored to individual needs rather than generalised assumptions that could potentially endanger human life. For that, context awareness is a key requirement in order to reach a better understanding of human-centric computing systems and environments, and subsequently, the deployment of dedicated services that are specifically adapted to the context to which they are applied. Such context-driven services would be able to provide the means of delivering situation-aware and person-centric services that ultimately may even anticipate future behaviour and problems of the user itself and the context in which the user finds themselves. However, the perpetual provision of contextual data in pervasive environments is far from being easy and includes major challenges that vary between environments. The reason for this is not only the sensor diversity within the environments themselves but also the contextual scope to be analysed and the amount of data to be collected and correlated to actually reach a minimum degree of contextual understanding. For that reason, in this chapter, contextual environments have been categorised as well as their interaction into different groups that reflect individual contextual levels of interest of which contextual understanding is required and consequently to which services can be applied.

  19. Ubiquitous Geo-Sensing for Context-Aware Analysis: Exploring Relationships between Environmental and Human Dynamics

    PubMed Central

    Sagl, Günther; Blaschke, Thomas; Beinat, Euro; Resch, Bernd

    2012-01-01

    Ubiquitous geo-sensing enables context-aware analyses of physical and social phenomena, i.e., analyzing one phenomenon in the context of another. Although such context-aware analysis can potentially enable a more holistic understanding of spatio-temporal processes, it is rarely documented in the scientific literature yet. In this paper we analyzed the collective human behavior in the context of the weather. We therefore explored the complex relationships between these two spatio-temporal phenomena to provide novel insights into the dynamics of urban systems. Aggregated mobile phone data, which served as a proxy for collective human behavior, was linked with the weather data from climate stations in the case study area, the city of Udine, Northern Italy. To identify and characterize potential patterns within the weather-human relationships, we developed a hybrid approach which integrates several spatio-temporal statistical analysis methods. Thereby we show that explanatory factor analysis, when applied to a number of meteorological variables, can be used to differentiate between normal and adverse weather conditions. Further, we measured the strength of the relationship between the ‘global’ adverse weather conditions and the spatially explicit effective variations in user-generated mobile network traffic for three distinct periods using the Maximal Information Coefficient (MIC). The analyses result in three spatially referenced maps of MICs which reveal interesting insights into collective human dynamics in the context of weather, but also initiate several new scientific challenges. PMID:23012571

  20. Technological Applications to Support Children's Development of Spatial Awareness

    ERIC Educational Resources Information Center

    Matthews, David; Geist, Eugene A.

    2002-01-01

    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…

  1. A Java Middleware Platform for Resource-Aware Distributed Applications

    E-print Network

    Paris-Sud XI, Université de

    A Java Middleware Platform for Resource-Aware Distributed Applications Frédéric Guidec, Yves Mahéo.Guidec|Yves.Maheo|Luc.Courtrai}@univ-ubs.fr Abstract This paper reports the development of D-RAJE (Dis- tributed Resource-Aware Java Environment), a Java-based middleware platform that makes it possible to model and to monitor resources

  2. User centered design of context aware cell phones in human-centric systems

    Microsoft Academic Search

    Ashish Godbole; Seung-yun Kim

    2010-01-01

    User research in software development and engineering design processes has gained unprecedented popularity due to the realization that knowing about users, their preferences, characteristics, and environments is highly useful in the design of effective user and human centric systems. Current human centric systems are intelligent, responsive, emotive and aware, and their capabilities and applications continue to increase rapidly. Due to

  3. Architecture for WSN Nodes Integration in Context Aware Systems Using Semantic Messages

    NASA Astrophysics Data System (ADS)

    Larizgoitia, Iker; Muguira, Leire; Vazquez, Juan Ignacio

    Wireless sensor networks (WSN) are becoming extremely popular in the development of context aware systems. Traditionally WSN have been focused on capturing data, which was later analyzed and interpreted in a server with more computational power. In this kind of scenario the problem of representing the sensor information needs to be addressed. Every node in the network might have different sensors attached; therefore their correspondent packet structures will be different. The server has to be aware of the meaning of every single structure and data in order to be able to interpret them. Multiple sensors, multiple nodes, multiple packet structures (and not following a standard format) is neither scalable nor interoperable. Context aware systems have solved this problem with the use of semantic technologies. They provide a common framework to achieve a standard definition of any domain. Nevertheless, these representations are computationally expensive, so a WSN cannot afford them. The work presented in this paper tries to bridge the gap between the sensor information and its semantic representation, by defining a simple architecture that enables the definition of this information natively in a semantic way, achieving the integration of the semantic information in the network packets. This will have several benefits, the most important being the possibility of promoting every WSN node to a real semantic information source.

  4. Human action detection and context-aware service implementation in a real-life living space test bed

    Microsoft Academic Search

    Tatsuya Yamazaki

    2006-01-01

    After completion of a real-life living space test bed, the Ubiquitous Home, new sensors have been implemented. In this paper, new functions of the Ubiquitous Home and actual sensed data are presented. Since one of the purposes for the Ubiquitous Home is to evaluate the context-aware services in a real-life situation, a case of context-aware service implementation is also presented.

  5. ANALYSIS OF STUDENT ATTITUDES FOR PARTICIPATING IN A CONTEXT-AWARE UBIQUITOUS LEARNING ACTIVITY WITH REPERTORY GRID APPROACH

    Microsoft Academic Search

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

    In recent years, the form of digital learning converts to m-learning from e-learning due to the progress of wireless and mobile computing technologies. Students can learn any time and any where with mobile devices. Context-aware ubiquitous learning is a new research issue. It integrates wireless, m-computing, and context awareness technologies that it is able to detect the situation of the

  6. Cache-Aware Timing Analysis of Streaming Applications

    E-print Network

    Roychoudhury, Abhik

    Cache-Aware Timing Analysis of Streaming Applications Samarjit Chakraborty1 Tulika Mitra1 Abhik hardware and software for streaming ap- plications. Such applications process potentially infinite streams phones to set-top boxes. Given a streaming application and an architecture, the timing analysis problem

  7. High Performance Computing Software Applications for Space Situational Awareness

    Microsoft Academic Search

    C. Giuliano; P. Schumacher; C. Matson; F. Chun; B. Duncan; K. Borelli; R. Desonia; G. Gusciora; K. Roe

    2006-01-01

    The High Performance Computing Software Applications Institute for Space Situational Awareness (HSAI-SSA) has completed its first full year of applications development. The emphasis of our work in this first year was in improving space surveillance sensor models and image enhancement software. These applications are the Space Surveillance Network Analysis Model (SSNAM), the Air Force Space Fence simulation (SimFence), and physically

  8. The Aware-Hospital: An architecture for mediating social awareness amongst hospital clinicians

    Microsoft Academic Search

    Cosmina Ivan; Adrian Dolha

    2009-01-01

    Health care systems will integrate new computing paradigms in the coming years. Context awareness computing is a research field which often refers to health care as an interesting and rich area of application. One of the areas for context aware computing is social awareness amongst a group of individuals. Providing individuals with social awareness about other coworkers is very important

  9. Information Behavior in Dynamic Group Work Contexts: Interwoven Situational Awareness, Dense Social Networks and Contested Collaboration in Command and Control.

    ERIC Educational Resources Information Center

    Sonnenwald, Diane H.; Pierce, Linda G.

    2000-01-01

    Reports on a study that explores human information behavior in command and control contexts in the military. Highlights include interwoven situational awareness; the need for dense social networks; contested collaboration; and insights into human information behavior in dynamic and complex group work contexts. (Author/LRW)

  10. Activity Theory Approach to Developing Context-Aware Mobile Learning Systems for Understanding Scientific Phenomenon and Theories

    ERIC Educational Resources Information Center

    Uden, Lorna; Hwang, Gwo-Jen

    2013-01-01

    Mobile computing offers potential opportunities for students' learning especially when it combines a sensing device such as RFID (Radio Frequency Identification). Researchers have indicated that a key feature of in-field learning supported by mobile devices and technology is context awareness, with which context and functionality provided by…

  11. Technological Applications to Support Children's Development of Spatial Awareness

    Microsoft Academic Search

    David Matthews; Eugene A. Geist

    2002-01-01

    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 interact and experience 2D and 3D space in a

  12. Applications of networking capabilities to assist in situational awareness

    Microsoft Academic Search

    J. M. Hunter; T. Matlack; K. G. Schweer; M. S. Sung; T. E. Ward; A. S. Bahora; S. C. Davis; B. M. Horowitz; D. Drescher; D. Spar; M. Sullivan

    2004-01-01

    Situational awareness is a primary concern in emergency response and military urban operations. The need for situational awareness in emergency response applications can be addressed through the use of RoamSecure Alert Network (RSAN) servers utilizing peer-to-peer technology for interjurisdictional integration. Linking RSAN servers from different jurisdictions will enable them to communicate with each other more effectively, automatically synchronize group lists

  13. Improving the Development of Context-dependent Java Applications with ContextJ

    Microsoft Academic Search

    Malte Appeltauer; Robert Hirschfeld; Hidehiko Masuhara

    2009-01-01

    Context-oriented programming languages ease the design and implementation of context-dependent applications. ContextJ is a context-oriented extension to the Java pro- gramming language. In this paper, we assess the applicabil- ity of ContextJ language abstractions for the development of a graphical user interface-based application. We present a text editor that has been implemented with ContextJ based on the Qt Jambi framework

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

    PubMed

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

    2012-12-01

    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

  15. Final Scientific/Technical Report: Context-Aware Smart Home Energy Manager (CASHEM)

    SciTech Connect

    Foslien, Wendy K; Curtner, Keith L

    2013-01-15

    Because of growing energy demands and shortages, residential home owners are turning to energy conservation measures and smart home energy management devices to help them reduce energy costs and live more sustainably. In this context, the Honeywell team researched, developed, and tested the Context Aware Smart Home Energy Manager (CASHEM) as a trusted advisor for home energy management. The project focused on connecting multiple devices in a home through a uniform user interface. The design of the user interface was an important feature of the project because it provided a single place for the homeowner to control all devices and was also where they received coaching. CASHEM then used data collected from homes to identify the contexts that affect operation of home appliances. CASHEM�s goal was to reduce energy consumption while keeping the user�s key needs satisfied. Thus, CASHEM was intended to find the opportunities to minimize energy consumption in a way that fit the user�s lifestyle.

  16. Terminology challenges implementing the HL7 context-aware knowledge retrieval ('Infobutton') standard.

    PubMed

    Strasberg, Howard R; Del Fiol, Guilherme; Cimino, James J

    2013-01-01

    Point-of-care information needs are common and frequently unmet. One solution to this problem is the use of Infobuttons, which are context-sensitive links from electronic health records (EHR) to knowledge resources, sometimes involving an intermediate broker known as an Infobutton Manager. Health Level Seven (HL7) has developed the Context-Aware Knowledge Retrieval (Infobutton) standard to standardize the integration between EHR systems and knowledge resources. While the standard specifies a set of context attributes and standard terminologies, it leaves to knowledge resources the flexibility to decide how to use these attributes and terminologies to retrieve the most relevant content. This paper describes some of the challenges faced by knowledge resources in trying to locate the most relevant content based on the attribute values for a given Infobutton request. Various approaches to content retrieval are discussed, including the role of indexing with standardized codes, the role of text-based search engines together with their ranking algorithms, and the role of hybrid approaches. Knowledge resource developers must carefully consider business rules, heuristics, and precision/recall tradeoffs when implementing the HL7 Infobutton standard. PMID:23077131

  17. A Semantic E-Wallet to Reconcile Privacy and Context Awareness

    Microsoft Academic Search

    Fabien L. Gandon; Norman M. Sadeh

    2003-01-01

    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 en- gaged in, who her colleagues are, etc. While there are many sources of contex- tual information, they tend to vary from one user to another

  18. NEXUS - Distributed Data Management Concepts for Location Aware Applications

    Microsoft Academic Search

    Steffen Volz; Monika Sester

    2000-01-01

    Nowadays, mobile computers like subnotebooks or personal digital assistants, as well as cellular phones can not only communicate wirelessly, but they can also determine their position via appropriate sensors like DGPS. So- called location aware applications take advantage of this fact and structure in- formation according to the position of their users. In order to be able to assign data

  19. Aperiodic phased arrays for space situational awareness applications

    Microsoft Academic Search

    M. Montagna; G. Dauron; P. Besso; M. Bozzi; L. Perregrini

    2010-01-01

    This paper presents a study of the characteristics and the potentials of aperiodic arrays for application in the ground-based radar for Low Earth Orbit (LEO) space surveillance, in the frame of ESA's Space Situational Awareness (SSA) program. In aperiodic arrays, the unequally element spacing breaks the periodicity of the layout and of the radiation pattern. Their most interesting characteristics are

  20. Network Awareness of P2P Live Streaming Applications

    E-print Network

    Network Awareness of P2P Live Streaming Applications Delia Ciullo, Maria Antonieta Garcia, ´Akos@hit.bme.hu TELECOM-ParisTech, firstname.lastname@enst.fr Abstract--Early P2P-TV systems have already attracted mil to compare three of the most successful P2P-TV systems, namely PPLive, SopCast and TVAnts. Our goal

  1. Modeling and querying uncertain spatial information for situational awareness applications

    Microsoft Academic Search

    Dmitri V. Kalashnikov; Yiming Ma; Sharad Mehrotra; Ramaswamy Hariharan; Carter Butts

    2006-01-01

    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 important

  2. Toward Managing Uncertain Spatial Information for Situational Awareness Applications

    Microsoft Academic Search

    Yiming Ma; Dmitri V. Kalashnikov; Sharad Mehrotra

    2008-01-01

    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

  3. Multicore Architecture-aware Scientific Applications

    SciTech Connect

    Srinivasa, Avinash

    2011-11-28

    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.

  4. A Presence-Based Context-Aware Chronic Stress Recognition System

    PubMed Central

    Peternel, Klemen; Poga?nik, Matevž; Tav?ar, Rudi; Kos, Andrej

    2012-01-01

    Stressors encountered in daily life may play an important role in personal well-being. Chronic stress can have a serious long-term impact on our physical as well as our psychological health, due to ongoing increased levels of the chemicals released in the ‘fight or flight’ response. The currently available stress assessment methods are usually not suitable for daily chronic stress measurement. The paper presents a context-aware chronic stress recognition system that addresses this problem. The proposed system obtains contextual data from various mobile sensors and other external sources in order to calculate the impact of ongoing stress. By identifying and visualizing ongoing stress situations of an individual user, he/she is able to modify his/her behavior in order to successfully avoid them. Clinical evaluation of the proposed methodology has been made in parallel by using electrodermal activity sensor. To the best of our knowledge, the system presented herein is the first one that enables recognition of chronic stress situations on the basis of user context. PMID:23202238

  5. MARKOV RANDOM FIELD BASED IMAGE INPAINTING WITH CONTEXT-AWARE LABEL Tijana Ruzic, Aleksandra Pizurica and Wilfried Philips

    E-print Network

    Pizurica, Aleksandra

    MARKOV RANDOM FIELD BASED IMAGE INPAINTING WITH CONTEXT-AWARE LABEL SELECTION Tijana Ruzi, Belgium ABSTRACT In this paper, we propose a novel global Markov Random Field based image inpainting descriptors, inference methods 1. INTRODUCTION Image inpainting, or image completion, is an image processing

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

    ERIC Educational Resources Information Center

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

    2011-01-01

    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,…

  7. Ontology-based Personalised and Context-aware Recommendations of News Items Ivn Cantador, Alejandro Bellogn, Pablo Castells

    E-print Network

    it in a more timely manner. On-line newspapers present breaking news on their websites in real time, and usersOntology-based Personalised and Context-aware Recommendations of News Items Iván Cantador, Spain {ivan.cantador, alejandro.bellogin, pablo.castells}@uam.es Abstract News@hand is a news

  8. Ontology-based Personalised and Context-aware Recommendations of News Items Ivn Cantador, Alejandro Bellogn, Pablo Castells

    E-print Network

    Cantador, Iván

    they can obtain it in a more timely manner. On-line newspapers present breaking news on their websitesOntology-based Personalised and Context-aware Recommendations of News Items Iván Cantador, Spain {ivan.cantador, alejandro.bellogin, pablo.castells}@uam.es Abstract News@hand is a news

  9. Here you can't: context-aware security Chiara Bodei, Pierpaolo Degano, Letterio Galletta, and Francesco Salvatori

    E-print Network

    Mödersheim, Sebastian

    Here you can't: context-aware security Chiara Bodei, Pierpaolo Degano, Letterio Galletta, and Francesco Salvatori Dipartimento di Informatica, Universit`a di Pisa {chiara,degano,galletta}@di.unipi.it,francesco.salvatori@sns of their operational environment. Also, security must adapt to these changes and policy enforcement becomes dependent

  10. Integrating Context-Aware and Fuzzy Rule to Data Mining Model for Supply Chain Finance Cooperative Systems

    Microsoft Academic Search

    Liu Xiang

    2009-01-01

    This paper proposes a context aware and fuzzy rule data mining model for enterprise supply chain finance cooperative system that interacts with bank, buyer and supplier. It consists of three main components. The first component is the model for enterprise supply chain finance cooperative systems with cooperative agents serving as the simulation representatives of bank, buyer and supplier communicating with

  11. Development of a self-adapting intelligent system for building energy saving and context-aware smart services

    Microsoft Academic Search

    Jinsung Byun; Sehyun Park

    2011-01-01

    Recent advances in ubiquitous technologies facilitate context-aware systems which can offer situation- based services. Wireless sensor networks (WSNs) have become increasingly important in recent years due to their ability to monitor and manage situational information for various intelligent services in ubiquitous environments. However, existing energy management systems are not effectively implemented in home and building environments due to their architectural

  12. A Context-Aware Ubiquitous Learning Approach for Providing Instant Learning Support in Personal Computer Assembly Activities

    ERIC Educational Resources Information Center

    Hsu, Ching-Kun; Hwang, Gwo-Jen

    2014-01-01

    Personal computer assembly courses have been recognized as being essential in helping students understand computer structure as well as the functionality of each computer component. In this study, a context-aware ubiquitous learning approach is proposed for providing instant assistance to individual students in the learning activity of a…

  13. Context-Aware Access Control for RDF Graph Stores Luca Costabello and Serena Villata and Fabien Gandon 1

    E-print Network

    Paris-Sud XI, Université de

    Context-Aware Access Control for RDF Graph Stores Luca Costabello and Serena Villata and Fabien Gandon 1 Abstract. We present SHI3LD, an access control framework for RDF stores. Our solution supports Web languages. Designed as a pluggable filter for generic SPARQL endpoints, the module uses RDF named

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

    Microsoft Academic Search

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

    2009-01-01

    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

  15. GEO-RBAC: a spatially aware RBAC

    Microsoft Academic Search

    Elisa Bertino; Barbara Catania; Maria Luisa Damiani; Paolo Perlasca

    2005-01-01

    Securing access to data in location-based services and mobile applications requires the definition of spatially aware access control systems. Even if some approaches have already been proposed either in the context of geographic database systems or context-aware applications, a comprehensive framework, general and flexible enough to cope with spatial aspects in real mobile applications, is still missing. In this paper,

  16. Web-of-Objects (WoO)-Based Context Aware Emergency Fire Management Systems for the Internet of Things

    PubMed Central

    Shamszaman, Zia Ush; Ara, Safina Showkat; Chong, Ilyoung; Jeong, Youn Kwae

    2014-01-01

    Recent advancements in the Internet of Things (IoT) and the Web of Things (WoT) accompany a smart life where real world objects, including sensing devices, are interconnected with each other. The Web representation of smart objects empowers innovative applications and services for various domains. To accelerate this approach, Web of Objects (WoO) focuses on the implementation aspects of bringing the assorted real world objects to the Web applications. In this paper; we propose an emergency fire management system in the WoO infrastructure. Consequently, we integrate the formation and management of Virtual Objects (ViO) which are derived from real world physical objects and are virtually connected with each other into the semantic ontology model. The charm of using the semantic ontology is that it allows information reusability, extensibility and interoperability, which enable ViOs to uphold orchestration, federation, collaboration and harmonization. Our system is context aware, as it receives contextual environmental information from distributed sensors and detects emergency situations. To handle a fire emergency, we present a decision support tool for the emergency fire management team. The previous fire incident log is the basis of the decision support system. A log repository collects all the emergency fire incident logs from ViOs and stores them in a repository. PMID:24531299

  17. Web-of-Objects (WoO)-based context aware emergency fire management systems for the Internet of Things.

    PubMed

    Shamszaman, Zia Ush; Ara, Safina Showkat; Chong, Ilyoung; Jeong, Youn Kwae

    2014-01-01

    Recent advancements in the Internet of Things (IoT) and the Web of Things (WoT) accompany a smart life where real world objects, including sensing devices, are interconnected with each other. The Web representation of smart objects empowers innovative applications and services for various domains. To accelerate this approach, Web of Objects (WoO) focuses on the implementation aspects of bringing the assorted real world objects to the Web applications. In this paper; we propose an emergency fire management system in the WoO infrastructure. Consequently, we integrate the formation and management of Virtual Objects (ViO) which are derived from real world physical objects and are virtually connected with each other into the semantic ontology model. The charm of using the semantic ontology is that it allows information reusability, extensibility and interoperability, which enable ViOs to uphold orchestration, federation, collaboration and harmonization. Our system is context aware, as it receives contextual environmental information from distributed sensors and detects emergency situations. To handle a fire emergency, we present a decision support tool for the emergency fire management team. The previous fire incident log is the basis of the decision support system. A log repository collects all the emergency fire incident logs from ViOs and stores them in a repository. PMID:24531299

  18. Using SWRL and OWL to Capture Domain Knowledge for a Situation Awareness Application Applied to a

    E-print Network

    Baclawski, Kenneth B.

    Using SWRL and OWL to Capture Domain Knowledge for a Situation Awareness Application Applied situation awareness applications we begin by con- structing an OWL ontology to capture a language our situation awareness application, SAWA, which can employ either Jess or BaseVISor as its inference

  19. Semantic classification of diseases in discharge summaries using a context-aware rule-based classifier.

    PubMed

    Solt, Illés; Tikk, Domonkos; Gál, Viktor; Kardkovács, Zsolt T

    2009-01-01

    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: F(1)-macro and F(1)-micro for measurements. RESULTS On the two subtasks of the Obesity Challenge (textual and intuitive classification) the system performed very well, and achieved a F(1)-macro = 0.80 for the textual and F(1)-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. PMID:19390101

  20. Context-Aware Mesh Smoothing for Biomedical Applications Tobias Moencha,

    E-print Network

    and binary segmentation in medical image data for subsequent removal by adaptive mesh smoothing. This paper or clipping at the endings of anatomical structures are detected and modified by smoothing; the effects relations are examined for planning of surgical in- tervention or radiation treatment. Surface models

  1. Energy-Aware Routing for E-Textile Applications

    E-print Network

    Kao, Jung-Chun

    2011-01-01

    As the scale of electronic devices shrinks, "electronic textiles" (e-textiles) will make possible a wide variety of novel applications which are currently unfeasible. Due to the wearability concerns, low-power techniques are critical for e-textile applications. In this paper, we address the issue of the energy-aware routing for e-textile platforms and propose an efficient algorithm to solve it. The platform we consider consists of dedicated components for e-textiles, including computational modules, dedicated transmission lines and thin-film batteries on fiber substrates. Furthermore, we derive an analytical upper bound for the achievable number of jobs completed over all possible routing strategies. From a practical standpoint, for the Advanced Encryption Standard (AES) cipher, the routing technique we propose achieves about fifty percent of this analytical upper bound. Moreover, compared to the non-energy-aware counterpart, our routing technique increases the number of encryption jobs completed by one order...

  2. Mobile phone middleware architecture for energy and context awareness in location-based services.

    PubMed

    Galeana-Zapién, Hiram; Torres-Huitzil, César; Rubio-Loyola, Javier

    2014-01-01

    The disruptive innovation of smartphone technology has enabled the development of mobile sensing applications leveraged on specialized sensors embedded in the device. These novel mobile phone applications rely on advanced sensor information processes, which mainly involve raw data acquisition, feature extraction, data interpretation and transmission. However, the continuous accessing of sensing resources to acquire sensor data in smartphones is still very expensive in terms of energy, particularly due to the periodic use of power-intensive sensors, such as the Global Positioning System (GPS) receiver. The key underlying idea to design energy-efficient schemes is to control the duty cycle of the GPS receiver. However, adapting the sensing rate based on dynamic context changes through a flexible middleware has received little attention in the literature. In this paper, we propose a novel modular middleware architecture and runtime environment to directly interface with application programming interfaces (APIs) and embedded sensors in order to manage the duty cycle process based on energy and context aspects. The proposed solution has been implemented in the Android software stack. It allows continuous location tracking in a timely manner and in a transparent way to the user. It also enables the deployment of sensing policies to appropriately control the sampling rate based on both energy and perceived context. We validate the proposed solution taking into account a reference location-based service (LBS) architecture. A cloud-based storage service along with online mobility analysis tools have been used to store and access sensed data. Experimental measurements demonstrate the feasibility and efficiency of our middleware, in terms of energy and location resolution. PMID:25513821

  3. Mobile Phone Middleware Architecture for Energy and Context Awareness in Location-Based Services

    PubMed Central

    Galeana-Zapién, Hiram; Torres-Huitzil, César; Rubio-Loyola, Javier

    2014-01-01

    The disruptive innovation of smartphone technology has enabled the development of mobile sensing applications leveraged on specialized sensors embedded in the device. These novel mobile phone applications rely on advanced sensor information processes, which mainly involve raw data acquisition, feature extraction, data interpretation and transmission. However, the continuous accessing of sensing resources to acquire sensor data in smartphones is still very expensive in terms of energy, particularly due to the periodic use of power-intensive sensors, such as the Global Positioning System (GPS) receiver. The key underlying idea to design energy-efficient schemes is to control the duty cycle of the GPS receiver. However, adapting the sensing rate based on dynamic context changes through a flexible middleware has received little attention in the literature. In this paper, we propose a novel modular middleware architecture and runtime environment to directly interface with application programming interfaces (APIs) and embedded sensors in order to manage the duty cycle process based on energy and context aspects. The proposed solution has been implemented in the Android software stack. It allows continuous location tracking in a timely manner and in a transparent way to the user. It also enables the deployment of sensing policies to appropriately control the sampling rate based on both energy and perceived context. We validate the proposed solution taking into account a reference location-based service (LBS) architecture. A cloud-based storage service along with online mobility analysis tools have been used to store and access sensed data. Experimental measurements demonstrate the feasibility and efficiency of our middleware, in terms of energy and location resolution. PMID:25513821

  4. A Programming Interface for Application-Aware Adaptation in Mobile Computing

    E-print Network

    Satyanarayanan, Mahadev "Satya"

    adaptation[10]. Application-aware adaptation characterizes the de- sign space between two extremes. At oneA Programming Interface for Application-Aware Adaptation in Mobile Computing Brian D. Noble, Morgan at varying degrees of fidelity. In this pa- per we present applicaton-aware adaptation as a solution

  5. Traffic sign recognition based on a context-aware scale-invariant feature transform approach

    NASA Astrophysics Data System (ADS)

    Yuan, Xue; Hao, Xiaoli; Chen, Houjin; Wei, Xueye

    2013-10-01

    A new context-aware scale-invariant feature transform (CASIFT) approach is proposed, which is designed for the use in traffic sign recognition (TSR) systems. The following issues remain in previous works in which SIFT is used for matching or recognition: (1) SIFT is unable to provide color information; (2) SIFT only focuses on local features while ignoring the distribution of global shapes; (3) the template with the maximum number of matching points selected as the final result is instable, especially for images with simple patterns; and (4) SIFT is liable to result in errors when different images share the same local features. In order to resolve these problems, a new CASIFT approach is proposed. The contributions of the work are as follows: (1) color angular patterns are used to provide the color distinguishing information; (2) a CASIFT which effectively combines local and global information is proposed; and (3) a method for computing the similarity between two images is proposed, which focuses on the distribution of the matching points, rather than using the traditional SIFT approach of selecting the template with maximum number of matching points as the final result. The proposed approach is particularly effective in dealing with traffic signs which have rich colors and varied global shape distribution. Experiments are performed to validate the effectiveness of the proposed approach in TSR systems, and the experimental results are satisfying even for images containing traffic signs that have been rotated, damaged, altered in color, have undergone affine transformations, or images which were photographed under different weather or illumination conditions.

  6. Edu-Smile: a context-aware service for synchronous support in Web-based educational systems

    Microsoft Academic Search

    Vassilis Kapsalis; Christos Fidas; Christos Tranoris; Adrian Stoica

    2005-01-01

    In this paper a context-aware service for synchronous support in Web-based educational systems is proposed. The main purpose of the service is to support Web-based learning scenarios by allowing synchronous communication and interaction among the tutors and the students, thus increasing the communication channels among them. Furthermore, the service provides a variety of tools that allows the tutors to provide

  7. Apto: A MDD-Based Generic Framework for Context-Aware Deeply Adaptive Service-Based Processes

    Microsoft Academic Search

    Zakwan Jaroucheh; Xiaodong Liu; Sally Smith

    2010-01-01

    Context-awareness and adaptability are important and desirable properties of service-based processes designed to provide personalized services. Most of the existing approaches focus on the adaptation at the process instance level which involves extending the standard Business Process Execution Language (BPEL) and its engine or creating their own process languages (e.g. However, the approach proposed here aims to apply an adaptation

  8. Context management platform for tourism applications.

    PubMed

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

    2013-01-01

    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

  9. DRAFT : GEORGE S., LEKIRA R. A., MECOCO: A CONTEXT-AWARE SYSTEM FOR MEDIATED COMMUNICATIONS , INTERNATIONAL JOURNAL OF INTERACTIVE MOBILE TECHNOLOGIES (IJIM), VOL. 3, N3, 2009

    E-print Network

    Paris-Sud XI, Université de

    --In this paper, the potential of contextual communications with mobile technologies is explored. Context-mediated communication in mobility situations? - How to use different dimensions of a context to offer a simpleDRAFT : GEORGE S., LEKIRA R. A., MECOCO: A CONTEXT-AWARE SYSTEM FOR MEDIATED COMMUNICATIONS

  10. E-Learning and Context Aware e-Support Software for Maintenance

    NASA Astrophysics Data System (ADS)

    Papathanasiou, N.; Emmanouilidis, C.; Pistofidis, P.; Karampatzakis, D.

    2012-05-01

    Industrial Maintenance is seeking to enhance the efficiency of asset usage according to multiple criteria and constraints. Its implementation is facilitated by the application of a range of enabling technologies, termed in this context as e-Maintenance. Integrated e-Maintenance solutions can support a multitude of industrial maintenance procedures, from top-level management to low-level machinery technical issues. The level of complexity in these procedures varies greatly and requires a multidisciplinary level of skills from the involved personnel. Therefore, e-Maintenance applications can benefit from incorporating e-Learning and e-Support solutions. E-Learning can be an effective training method for maintenance, by providing cost effective, location-independent and easily updated training content. E-Support can be employed to provide technical staff with contextualized information and services in order to aid them with their assigned tasks. The WelCOM e-Maintenance architecture offers a framework that combines a networked infrastructure of intelligent wireless sensors, and a toolset of maintenance support services, linked to a CMMS. In this setting, one of the objectives is to integrate e-Learning in the form of web-based training modules and e-Support, by providing ubiquitous help through mobile devices to technical staff. The web-based learning is tailored to condition monitoring tasks, whereas the e-Support is planned to include instructions, videos, manuals or technical reports, all specially formatted to be delivered by a mobile device (tablet), exploiting its graphic, storage and networking capabilities. In this way, we aim for a smooth acceptance of the new e-Maintenance system, by providing easily accessible and context-depended support for maintenance personnel.

  11. Modeling user context with applications to media retrieval

    Microsoft Academic Search

    Ankur Mani; Hari Sundaram

    2007-01-01

    In this paper, we develop a theoretical understanding of multi-sensory knowledge and user context and their inter- relationships. This is used to develop a generic representation framework for multi-sensory knowledge and context. A representation framework for context can have a significant impact on media applications that dynamically adapt to user needs. There are three key contributions of this work: (a)

  12. MapNexus : a framework to derive human intent from architectural space to enable context-aware information exchanges in a wireless intranet

    E-print Network

    Fuller, Napier Sandford

    2004-01-01

    Architectural interior spaces provide a rich syntax for context-aware modeling. In a wireless wide area network (WAN), an urban environment can be geographically tessellated into a series of polygons reflecting the radio ...

  13. The context toolkit: aiding the development of context-enabled applications

    Microsoft Academic Search

    Daniel Salber; Anind K. Dey; Gregory D. Abowd

    1999-01-01

    Context-enabled applications are just emerging and promisericher interaction by taking environmental context into account.However, they are difficult to build due to their distributednature and the use of unconventional sensors. The concepts oftoolkits and widget libraries in graphical user interfaces has beentremendously successtil, allowing programmers to leverage offexisting building blocks to build interactive systems more easily.We introduce the concept of context

  14. Investigating prospective science teachers' awareness of information technology in STSE contexte

    Microsoft Academic Search

    Ozgul Yilmaz-Tuzun; Elif Adibelli

    2010-01-01

    In the present study, it was aimed to investigate prospective science teachers' (PSTs) awareness of the relationships between information technology (IT) and science, society, technology and environment (STSE). The sample of this study comprised of 40 elementary PSTs who were registered for a STSE course at a state university in the capital city of a non-western country. The data of

  15. Introducing Intertextuality-Aware Instruction as a Novel Approach of Teaching Reading Passages in EFL Context

    ERIC Educational Resources Information Center

    Khaghaninejad, Mohammad Saber

    2014-01-01

    This study was an attempt to investigate the possible effect of intertextuality-aware instruction of reading passages on a sample of intermediate EFL learners of both genders. First, the intertextuality deployed through the reading passages of the study's course-book was focused inspired by Fairclough's (192) framework in terms of genre,…

  16. Context-Aware Self-Optimization in Multiparty Converged Mobile Environments

    E-print Network

    Pitsillides, Andreas

    sessions and new technologies and market forces are fuelling the design of the future Internet, which, in particular how they improve network performance and user experience in the future Internet, in the scope auto-learning implemented by means of network-aware middleware distributed across network components

  17. Metacognitive Awareness of EFL Student Writers in a Chinese ELT Context

    ERIC Educational Resources Information Center

    Ruan, Zhoulin

    2014-01-01

    This paper reports on an investigation into metacognitive awareness of Chinese English as a foreign language (EFL) student writers, under a threefold metacognition framework--person, task, and strategy variables, and within the broader domain of cognitive writing theories. Data were collected in a Chinese tertiary English language teaching (ELT)…

  18. Being Aware in Wireless Sensor Networks

    Microsoft Academic Search

    Mihai Marin-perianu; Nirvana Meratnia; Maria Lijding; Paul Havinga

    Abstract— Most often understanding of people about context- awareness is limited to personal applications. This paper presents another perspective on context awareness from the network point of view. We show that wireless sensor networks offer powerful capability to locally and collaboratively sense both personal and environmental data, reason and interpret collected data, and react to various situations. These features bring

  19. International note: awareness and context of cyber-harassment among secondary school students in Oyo state, Nigeria.

    PubMed

    Olumide, Adesola O; Adams, Patricia; Amodu, Olukemi K

    2015-02-01

    We determined the awareness and context of cyber-harassment among secondary school students (653 survey respondents and 18 in-depth interviewees) in Oyo state, Nigeria. Respondents' mean age was 14.2 ± 2.2 years and 53.9% were aware of cyber-harassment occurring in their school or among their friends. Cyber-harassment was often perpetrated via phone calls (62.5%), text messaging (36.9%), chat rooms (28.7%), through pictures or video clips sent via mobile phones (11.9%), emails (6.8%) or websites (5.9%). Cyber-harassment behaviours mentioned were the use of abusive words (25.4%), saying mean things or making fun of the victim (13.9%), solicitations for relationships (7.9%) or sex (6.8%) and spreading rumours about the victim (6.8%). In-depth interviewees recounted experiences of cyber-harassment suffered by their friends. Many were relationship-related, sexual solicitations and threats and corroborated quantitative findings. Respondents are aware of cyber-harassment occurring among students in the study area. Comprehensive interventions to address the problem need to be instituted. PMID:25544425

  20. Q-CAD: QoS and Context Aware Discovery Framework for Mobile Systems Licia Capra, Stefanos Zachariadis and Cecilia Mascolo

    E-print Network

    Mascolo, Cecilia

    Q-CAD: QoS and Context Aware Discovery Framework for Mobile Systems Licia Capra, Stefanos 6BT, UK {L.Capra|S.Zachariadis|C.Mascolo}@cs.ucl.ac.uk Abstract This paper presents Q-CAD/her quality- of-service (QoS) needs are actually selected. In this paper we present Q-CAD, a context and Qo

  1. Energy-Aware Routing for E-Textile Applications Jung-Chun Kao and Radu Marculescu

    E-print Network

    Paris-Sud XI, Université de

    Energy-Aware Routing for E-Textile Applications Jung-Chun Kao and Radu Marculescu Carnegie Mellon devices shrinks, "electronic textiles" (e-textiles) will make possible a wide variety of novel for e- textile applications. In this paper, we address the issue of the energy-aware routing for e-textile

  2. A Translation System for Enabling Flexible and Efficient Deployment of QoS-Aware Applications

    E-print Network

    Nahrstedt, Klara

    A Translation System for Enabling Flexible and Efficient Deployment of QoS-Aware Applications of Illinois at Urbana-Champaign, {wichadak, klara}@cs.uiuc.edu Abstract. Ubiquitous Quality of Service(QoS decade, also QoS-oriented middleware services, as- sisting QoS-aware applications with different aspects

  3. A Case for Application Aware Channel Access in Wireless Ashish Sharma, Elizabeth M. Belding

    E-print Network

    Belding-Royer, Elizabeth M.

    and implemen- tation of Rendezvous - an application aware MAC protocol. Ren- dezvous uses short term dynamic in the direction of application awareness at lower layers of the networking stack. Categories and Subject Descriptors C.2 [Computer-Communication Networks]: Network Protocols, Wireless communication; C.2.5 [Local

  4. Context Discovery in Mobile Environments: A Particle Swarm Optimization Approach

    Microsoft Academic Search

    Christos Anagnostopoulos; Stathes Hadjiefthymiades

    2009-01-01

    We introduce a novel application of Particle Swarm Optimization in the mobile computing domain. We focus on context aware\\u000a applications and investigate the context discovery problem in dynamic environments. Specifically, we investigate those scenarios\\u000a where nodes with context aware applications are trying to (physically) locate up-to-date context, captured by other nodes.\\u000a We establish the concept of context quality (an ageing

  5. A Context-Aware-Based Audio Guidance System for Blind People Using a Multimodal Profile Model

    PubMed Central

    Lin, Qing; Han, Youngjoon

    2014-01-01

    A wearable guidance system is designed to provide context-dependent guidance messages to blind people while they traverse local pathways. The system is composed of three parts: moving scene analysis, walking context estimation and audio message delivery. The combination of a downward-pointing laser scanner and a camera is used to solve the challenging problem of moving scene analysis. By integrating laser data profiles and image edge profiles, a multimodal profile model is constructed to estimate jointly the ground plane, object locations and object types, by using a Bayesian network. The outputs of the moving scene analysis are further employed to estimate the walking context, which is defined as a fuzzy safety level that is inferred through a fuzzy logic model. Depending on the estimated walking context, the audio messages that best suit the current context are delivered to the user in a flexible manner. The proposed system is tested under various local pathway scenes, and the results confirm its efficiency in assisting blind people to attain autonomous mobility. PMID:25302812

  6. A context-aware-based audio guidance system for blind people using a multimodal profile model.

    PubMed

    Lin, Qing; Han, Youngjoon

    2014-01-01

    A wearable guidance system is designed to provide context-dependent guidance messages to blind people while they traverse local pathways. The system is composed of three parts: moving scene analysis, walking context estimation and audio message delivery. The combination of a downward-pointing laser scanner and a camera is used to solve the challenging problem of moving scene analysis. By integrating laser data profiles and image edge profiles, a multimodal profile model is constructed to estimate jointly the ground plane, object locations and object types, by using a Bayesian network. The outputs of the moving scene analysis are further employed to estimate the walking context, which is defined as a fuzzy safety level that is inferred through a fuzzy logic model. Depending on the estimated walking context, the audio messages that best suit the current context are delivered to the user in a flexible manner. The proposed system is tested under various local pathway scenes, and the results confirm its efficiency in assisting blind people to attain autonomous mobility. PMID:25302812

  7. Managing context information in mobile devices

    Microsoft Academic Search

    Panu Korpipää; Jani Mäntyjärvi; Juha Kela; Heikki Keränen; Esko-Juhani Malm

    2003-01-01

    We present a uniform mobile terminal software framework that provides systematic methods for acquiring and processing useful context information from a user's surroundings and giving it to applications. The framework simplifies the development of context-aware mobile applications by managing raw context information gained from multiple sources and enabling higher-level context abstractions.

  8. Changing the Context: The Power in Prevention. Alcohol Awareness, Caring, and Community. Guest Editorial.

    ERIC Educational Resources Information Center

    Keeling, Richard P.

    1994-01-01

    College students, educators, staff, and administrators often adjust, with resignation, to destructive drinking behaviors. Changing their discomfort to dismay could motivate change. The paper discusses how to reshape the environment of norms, expectations, and social context to construct a community of caring to reduce the prevalence of problem…

  9. A Novel Metric for Context-Aware RAT Selection in Wireless Multi-Access Systems

    Microsoft Academic Search

    Jordi Pérez-romero; Oriol Sallent; Ramón Agustí

    2007-01-01

    This paper presents a novel metric, named fittingness factor, for developing Common Radio Resource Management (CRRM) algorithms in heterogeneous wireless scenarios. It reflects the suitability of allocating a given Radio Access Technology (RAT) and cell to a user depending on the specific context in terms of requested service and on the terminal and network capabilities at each instant. Thus, the

  10. Raising language awareness in peer interaction: a cross-context, cross-methodology examination

    Microsoft Academic Search

    Masatoshi Sato; Susan Ballinger

    2012-01-01

    In this paper, both a cognitive and a sociocultural theoretical perspective are used to bring together findings from two studies that investigated the effects of instruction designed to enhance the potentially positive effect of peer interaction on L2 development. Despite differences between the studies’ learning contexts, participants’ age, and research design, a comparative examination of their findings promotes our overall

  11. Adaptive Multimedia Content Delivery for Context-Aware U-Learning

    ERIC Educational Resources Information Center

    Zhao, Xinyou; Okamoto, Toshio

    2011-01-01

    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)…

  12. Raising Language Awareness in Peer Interaction: A Cross-Context, Cross-Methodology Examination

    ERIC Educational Resources Information Center

    Sato, Masatoshi; Ballinger, Susan

    2012-01-01

    In this paper, both a cognitive and a sociocultural theoretical perspective are used to bring together findings from two studies that investigated the effects of instruction designed to enhance the potentially positive effect of peer interaction on L2 development. Despite differences between the studies' learning contexts, participants' age, and…

  13. Vision-Aided Context-Aware Framework for Personal Navigation Services

    NASA Astrophysics Data System (ADS)

    Saeedi, S.; Moussa, A.; El-Sheimy, N., , Dr.

    2012-07-01

    The ubiquity of mobile devices (such as smartphones and tablet-PCs) has encouraged the use of location-based services (LBS) that are relevant to the current location and context of a mobile user. The main challenge of LBS is to find a pervasive and accurate personal navigation system (PNS) in different situations of a mobile user. In this paper, we propose a method of personal navigation for pedestrians that allows a user to freely move in outdoor environments. This system aims at detection of the context information which is useful for improving personal navigation. The context information for a PNS consists of user activity modes (e.g. walking, stationary, driving, and etc.) and the mobile device orientation and placement with respect to the user. After detecting the context information, a low-cost integrated positioning algorithm has been employed to estimate pedestrian navigation parameters. The method is based on the integration of the relative user's motion (changes of velocity and heading angle) estimation based on the video image matching and absolute position information provided by GPS. A Kalman filter (KF) has been used to improve the navigation solution when the user is walking and the phone is in his/her hand. The Experimental results demonstrate the capabilities of this method for outdoor personal navigation systems.

  14. Pattern of life from WAMI objects tracking based on visual context-aware tracking and infusion network models

    NASA Astrophysics Data System (ADS)

    Gao, Jianjun; Ling, Haibin; Blasch, Erik; Pham, Khanh; Wang, Zhonghai; Chen, Genshe

    2013-05-01

    With the emergence of long lasting surveillance systems, e.g., full motion video (FMV) networks and wide area motion imagery (WAMI) sensors, extracting targets' long term pattern of life over a day becomes possible. In this paper, we present a framework for extracting the pattern of life (POL) of targets from WAMI video. We first apply a context-aware multi-target tracker (CAMT) to track multiple targets in the WAMI video and obtain the targets' tracklets, traces, and the locations, from surveillance information extracted from the targets' long-term trajectories. Then, entity networks propagate over time are constructed with targets' tracklets, traces, and the interested locations. Finally, the entity network is analyzed using network retrieving technique to extract the POL of interested targets.

  15. TSV Stress Aware Timing Analysis with Applications to 3D-IC Layout Optimization

    E-print Network

    Lim, Sung Kyu

    TSV Stress Aware Timing Analysis with Applications to 3D-IC Layout Optimization Jae-Seok Yang, Krit TSV fill material is copper which causes tensile stress on sil- icon near TSV. In this paper, we propose systematic TSV stress aware timing analysis and show how to optimize lay- out for better

  16. Software Quality Model and Framework with Applications in Industrial Context

    E-print Network

    Beszedes, Árpád

    Software Quality Model and Framework with Applications in Industrial Context Lajos Schrettner Info University of Szeged Department of Software Engineering Árpád tér 2, H-6720 Szeged, Hungary {beszedes of the metrics and the calculation of the answers to the questions. We demonstrate the applicability

  17. Bridging the Gap between Technical Heterogeneity of Context-Aware Platforms: Experimenting a Service Based Connectivity between Adaptable Android, WComp and OpenORB

    E-print Network

    Monfort, Valerie

    2012-01-01

    Many companies include in their Information Systems (IS) several communicating heterogeneous middleware according to their technical needs. The need is the same when IS requires using context aware platforms for different aims. Moreover, users may be mobile and want to receive and send services with their PDA that more often supports Android based Human Man Interface. In this paper, we show how we extend Android to make it adaptable and open. We also present how we communicate between different heterogeneous context aware platforms as WComp and OpenORB by using Android and Web Services. We introduce a concrete case study to explain our approach.

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

    NASA Astrophysics Data System (ADS)

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

    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.

  19. ReMoS: A Resource Monitoring System for Network-Aware Applications

    Microsoft Academic Search

    Tony Dewitt; Thomas Gross; Bruce Lowekamp; Nancy Miller; Peter Steenkiste; Jaspal Subhlok; Dean Sutherland

    1997-01-01

    Network-aware applications can adjust their resource demands in response to changes in the availability ofresources. Such applications must be able to obtain information about the status of the network resources.Providing such information to an application is conceptually simple, yet defining an interface that addressesthe needs of applications, as well as the realities of current and future networks, is far from

  20. AN ARCHITECTURE FOR CONTEXT PREDICTION

    Microsoft Academic Search

    Rene Mayrhofer

    2004-01-01

    Today's information appliances appear very powerful, featuring on-device storage and processing power, communication technology and supporting many different applications. Context awareness is currently considered as one of the key issues for future device generations, with context prediction being the next step in research. The goal is not only to recognize the current context of an information appliance or its user,

  1. Cloud computing for context-aware enhanced m-Health services.

    PubMed

    Fernandez-Llatas, Carlos; Pileggi, Salvatore F; Ibañez, Gema; Valero, Zoe; Sala, Pilar

    2015-01-01

    m-Health services are increasing its presence in our lives due to the high penetration of new smartphone devices. This new scenario proposes new challenges in terms of information accessibility that require new paradigms which enable the new applications to access the data in a continuous and ubiquitous way, ensuring the privacy required depending on the kind of data accessed. This paper proposes an architecture based on cloud computing paradigms in order to empower new m-Health applications to enrich their results by providing secure access to user data. PMID:25417085

  2. Context-Aware Access Control for Pervasive Access to Process-Based Healthcare Systems

    Microsoft Academic Search

    Vassiliki Koufi; George Vassilacopoulos

    2008-01-01

    Healthcare is an increasingly collaborative enterprise involving a broad range of healthcare services provided by many individuals and organizations. Grid technology has been widely recognized as a means for integrating disparate computing resources in the healthcare field. Moreover, Grid portal applications can be developed on a wireless and mobile infrastructure to execute healthcare processes which, in turn, can provide remote

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

    ERIC Educational Resources Information Center

    Lundquist, Doug

    2011-01-01

    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…

  4. A Context-Aware Mobile Learning System for Supporting Cognitive Apprenticeships in Nursing Skills Training

    ERIC Educational Resources Information Center

    Wu, Po-Han; Hwang, Gwo-Jen; Su, Liang-Hao; Huang, Yueh-Min

    2012-01-01

    The aim of nursing education is to foster in students the competence of applying integrated knowledge with clinical skills to the application domains. In the traditional approach, in-class knowledge learning and clinical skills training are usually conducted separately, such that the students might not be able to integrate the knowledge and the…

  5. A Framework for a Context-Aware Elderly Entertainment Support System

    PubMed Central

    Hossain, M. Anwar; Alamri, Atif; Almogren, Ahmad S.; Hossain, SK Alamgir; Parra, Jorge

    2014-01-01

    Elderly people constitute a major portion of world's population. Many of them are physically and mentally vulnerable and need continuous support for their health and well-being. There is a growing trend that these elderly people are placed in an ambient assisted living environment (AAL) with an aim to receive better care and support. In such settings, a lot of attention has been given to continuous health monitoring for maintaining physical health status. However, much less attention has been given toward understanding the entertainment needs of the elderly people, which is an important factor relevant to their mental health and joyful living. This paper thus addresses the entertainment needs of the elderly and proposes a framework of an elderly entertainment support system. The proposed framework enables different categories of residents (e.g., elderly people and caregivers) to access various media services in both implicit and explicit manner in order to enhance the quality of their living experience in different contexts. Our experimental results demonstrate the viability of the proposed framework. We believe that the proposed approach will establish the need to develop entertainment systems and services for the elderly people and allow us to sensibly address the problems associated with their independent, happy and active living. PMID:24936946

  6. User Oriented Information Retrieval in a Collaborative and Context Aware Search Engine

    E-print Network

    Manuela Angioni; Roberto Demontis; Massimo Deriu; Emanuela De Vita; Cristian Lai; Ivan Marcialis; Antonio Pintus; Andrea Piras; Alessandro Soro; Franco Tuveri

    Abstract: The web is the largest knowledge system who people can access. Unfortunately, its size makes very complex to find the right information. Search engines help people but they face user with a large amount of results, mostly useless, and he have to select one by one the right satisfying needs. To focus the attention on user requirements and involving the end-user in their systems, new search engines should evolve from keyword-based indexing and classification to more sophisticated techniques considering the meaning, the context and the usage of information. The key aspects are three: semantics, geo-referencing, collaboration. Semantic analysis lets to increase the results relevance. The geo-referencing of catalogued resources allows contextualisation based on user position. Collaboration distributes storage, processing and trust on a world-wide network of nodes running on users ’ computers, getting rid of bottlenecks and central points of failures. In this paper, we describe the studies, the concepts and the solutions developed in the DART project to introduce these three key features in a novel search engine architecture.

  7. Context-aware QoI computation in multi-sensor systems

    Microsoft Academic Search

    M. Anwar Hossain; Pradeep K. Atrey; Abdulmotaleb El Saddik

    2008-01-01

    Multi-sensor systems are increasingly being deployed in many application scenarios due to the enormous potential they can offer. However, as the processing of sensory data often results in imprecise outcome, measuring the quality of information (QoI) in these systems has become an important issue. The measurement of QoI is usually performed by processing the elementary data provided by the heterogeneous

  8. Integrated Context-Aware and Cloud-Based Adaptive Home Screens for Android Phones

    Microsoft Academic Search

    Tor-Morten Grønli; Jarle Hansen; Gheorghita Ghinea

    \\u000a The home screen in Android phones is a highly customizable user interface where the users can add and remove widgets and icons\\u000a for launching applications. This customization is currently done on the mobile device itself and will only create static content.\\u000a Our work takes the concept of Android home screen [3] one step further and adds flexibility to the user

  9. On Systems Generating Context Triggers Through Energy Harvesting

    E-print Network

    Kuzmanov, Georgi

    {V.Rao, Akshay.Narashiman, R.R.VenkateshaPrasad, I.G.M.M.Niemegeers}@tudelft.nl Abstract Context-awareness of Cyber Physical systems, it is now possible to create spaces that are truly adaptable and smart the context-aware application framework for incorporating context-event triggers by harvesters. A Smart-M3

  10. A transparent deployment method of RSVP-aware applications on UNIX

    Microsoft Academic Search

    Ce-Kuen Shieh; Yu-Ben Miao; Chen-Yu Wang

    2001-01-01

    This paper proposes a method, called RLR (RSVP library redirection), which can transform legacy Internet applications into RSVP-aware applications without modifying their source files. RLR achieves the transparent transformation by redirecting procedure calls from the socket library to the RAPI (RSVP application programming interface) library. For UNIX operating systems, such as Linux, Free-BSD etc., the redirection can be realized since

  11. Awareness of Biotechnological Application: A Study among University Geography Students

    ERIC Educational Resources Information Center

    Ozel, Ali; Terzi, Irfan; Ozel, Emine

    2009-01-01

    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.…

  12. Awareness regarding clinical application of pharmacogenetics among Japanese pharmacists

    PubMed Central

    Obara, Taku; Abe, Shinya; Satoh, Michihiro; Gutiérrez Ubeda, Sergio Ramón; Yoshimachi, Shoko; Goto, Teruaki

    2015-01-01

    Advances in pharmacogenetic analysis technology have accelerated the movement to incorporate pharmacogenetic analysis data into medicine. Therefore, pharmacists will soon have to provide guidance and raise pharmaceutical questions regarding prescriptions based on patient pharmacogenomic information. The objective of this study was to clarify Japanese pharmacists’ awareness of pharmacogenetics. We conducted a postal questionnaire survey among 372 pharmacists belonging to Tsuruha Holdings. Available data were collected from 268 pharmacists (male [n=133], <40 years old [n=170], drugstore pharmacists [n=182]). Of the pharmacists, 19.0% of the population were aware of the Ethical Guidelines for Human Genome/ Gene Analysis Research in Japan, 31.0% of the population had heard either or both the terms “pharmacogenomics” and “pharmacogenetics”, and 16.8% of the population were aware that health insurance covered pharmacogenomic tests performed before prescription in Japan. Only 0.4% indicated that they could raise pharmaceutical questions regarding prescriptions based on patients’ pharmacogenomic information, and 61.2% of the population indicated a preference to undertake pharmacogenomic tests to predict the efficacy or adverse reactions of a drug. We found a need for actions to improve the awareness of pharmacists about pharmacogenetics and create an environment in which pharmacists are able to provide appropriate medical service based on pharmacogenomic information. PMID:25691815

  13. Network-Aware Query Processing for Stream-based Applications

    Microsoft Academic Search

    Yanif Ahmad

    2004-01-01

    This paper investigates the benefits of network awareness when processing queries in widely- distributed environments such as the Internet. We present algorithms that leverage knowledge of network characteristics (e.g., topology, band- width, etc.) when deciding on the network lo- cations where the query operators are executed. Using a detailed emulation study based on realis- tic network models, we analyse and

  14. Online handwriting recognition in a form-filling task: evaluating the impact of context-awareness

    NASA Astrophysics Data System (ADS)

    Seni, Giovanni; Rice, Kimberly; Mayoraz, Eddy

    2003-12-01

    Guiding a recognition task using a language model is commonly accepted as having a positive effect on accuracy and is routinely used in automated speech processing. This paper presents a quantitative study of the impact of the use of word models in online handwriting recognition applied to form-filling tasks on handheld devices. Two types of word models are considered: a dictionary, typically from few thousands and up to hundred-thousand words; and a grammar or regular expression generating a language several orders of magnitude bigger than the dictionary. It is reported that the improvement in accuracy obtained by the use of a grammar compares with the gain provided by the use of a dictionary. Finally, the impact of the word models on user acceptance of online handwriting recognition in a specific form-filling application is presented.

  15. Context Representation and Fusion: Advancements and Opportunities

    PubMed Central

    Khattak, Asad Masood; Akbar, Noman; Aazam, Mohammad; Ali, Taqdir; Khan, Adil Mehmood; Jeon, Seokhee; Hwang, Myunggwon; Lee, Sungyoung

    2014-01-01

    The acceptance and usability of context-aware systems have given them the edge of wide use in various domains and has also attracted the attention of researchers in the area of context-aware computing. Making user context information available to such systems is the center of attention. However, there is very little emphasis given to the process of context representation and context fusion which are integral parts of context-aware systems. Context representation and fusion facilitate in recognizing the dependency/relationship of one data source on another to extract a better understanding of user context. The problem is more critical when data is emerging from heterogeneous sources of diverse nature like sensors, user profiles, and social interactions and also at different timestamps. Both the processes of context representation and fusion are followed in one way or another; however, they are not discussed explicitly for the realization of context-aware systems. In other words most of the context-aware systems underestimate the importance context representation and fusion. This research has explicitly focused on the importance of both the processes of context representation and fusion and has streamlined their existence in the overall architecture of context-aware systems’ design and development. Various applications of context representation and fusion in context-aware systems are also highlighted in this research. A detailed review on both the processes is provided in this research with their applications. Future research directions (challenges) are also highlighted which needs proper attention for the purpose of achieving the goal of realizing context-aware systems. PMID:24887042

  16. Overview of Cyber Situation Awareness

    NASA Astrophysics Data System (ADS)

    Tadda, George P.; Salerno, John S.

    Improving a decision maker’s1 situational awareness of the cyber domain isn’t greatly different than enabling situation awareness in more traditional domains2. Situation awareness necessitates working with processes capable of identifying domain specific activities as well as processes capable of identifying activities that cross domains. These processes depend on the context of the environment, the domains, and the goals and interests of the decision maker but they can be defined to support any domain. This chapter will define situation awareness in its broadest sense, describe our situation awareness reference and process models, describe some of the applicable processes, and identify a set of metrics usable for measuring the performance of a capability supporting situation awareness. These techniques are independent of domain but this chapter will also describe how they apply to the cyber domain.

  17. Community Situational Awareness and Resilience through Mobile Applications

    Microsoft Academic Search

    Yuan-Chi Chang; Chang-Tien Lu; Huong Morris; Pam Murray-Tuite; Quoc-Bao Nguyen

    2011-01-01

    Access to social networks via portable devices promises to be especially valuable for public communities. Because smart phones increasingly accompany community members wherever they are, the social network extends into everyday interactions where location-specific, real time interactions are natural and resulting actions can be immediate. Governments and NGOs can leverage the self-organizing, collectively-intelligent community to improve situational awareness and improve

  18. Space Situational Awareness Applications of the PS1 AP Catalog

    Microsoft Academic Search

    D. Monet

    2006-01-01

    New requirements for accuracy, sensitivity, and timeliness in Space Situational Awareness (SSA) flow down into requirements for star catalogs that provide in-frame metrics. Star catalogs are being used to provide the (astro-)metric calibration of the focal plane sensor(s) as well as for the photometric calibration. In many cases, the SSA sensor does not have traditional astronomical filters, so the transformation

  19. Using XML for Interprocess Communications in a Space Situational Awareness and Control Application

    Microsoft Academic Search

    Stuart Aldridge; Alexander D. Stoyen; Jeffrey S. Hicks; Plamen V. Petrov

    2002-01-01

    \\u000a As various militaries progress toward a network-centric environment, their dependency upon space assets is expected to grow\\u000a exponentially. It is important for the commander to be aware of the dispositions and movements in this fourth medium. The\\u000a success of terrestrial forces requires comprehensive space situational awareness (SSA). 21st Century Systems, Inc. is essentially\\u000a developing a SSA and decision support application

  20. Data location-aware job scheduling in the grid. Application to the GridWay metascheduler

    NASA Astrophysics Data System (ADS)

    Delgado Peris, Antonio; Hernandez, Jose; Huedo, Eduardo; Llorente, Ignacio M.

    2010-04-01

    Grid infrastructures constitute nowadays the core of the computing facilities of the biggest LHC experiments. These experiments produce and manage petabytes of data per year and run thousands of computing jobs every day to process that data. It is the duty of metaschedulers to allocate the tasks to the most appropriate resources at the proper time. Our work reviews the policies that have been proposed for the scheduling of grid jobs in the context of very data-intensive applications. We indicate some of the practical problems that such models will face and describe what we consider essential characteristics of an optimum scheduling system: aim to minimise not only job turnaround time but also data replication, flexibility to support different virtual organisation requirements and capability to coordinate the tasks of data placement and job allocation while keeping their execution decoupled. These ideas have guided the development of an enhanced prototype for GridWay, a general purpose metascheduler, part of the Globus Toolkit and member of the EGEE's RESPECT program. Current GridWay's scheduling algorithm is unaware of data location. Our prototype makes it possible for job requests to set data needs not only as absolute requirements but also as functions for resource ranking. As our tests show, this makes it more flexible than currently used resource brokers to implement different data-aware scheduling algorithms.

  1. Beyond position - spatial context for mobile information retrieval systems

    Microsoft Academic Search

    Dirk Ahlers; Susanne Boll

    2009-01-01

    Within context-aware mobile applications, location information usually plays a major role for information selection and adaptivity. In this paper, we explore the geospatial dimension between simple position-aware and fully context-aware information systems by examining in-depth the features of spatial context beyond mere position. We describe how these features can be used to create spatial queries in a mobile information retrieval

  2. Development of Situation-Aware Application Software for Ubiquitous Computing Environment

    Microsoft Academic Search

    Stephen S. Yau; Yu Wang; Fariaz Karim

    2002-01-01

    Ubiquitous computing represents the concept of computing everywhere, making computing and communication essentially transparent to the users. Applications in this type of environments are context- sensitive. They use various contexts to adaptively communicate with each other across multiple network environments, such as mobile ad hoc networks, Internet, and mobile phone networks. The property of context-sensitivity often becomes inadequate in these

  3. The application of journalistic principles to freshman English: a means of emphasizing audience awareness

    E-print Network

    Egle, Esther Beatrice

    1977-01-01

    THZ APPLICATION OF JOURNALISTIC PRINCIPLES TO FRESHMAN ENGLISH: A MEANS OF EMPHASIZING AUDIENCE AWARENESS A Thesis ESTHER BEATRICE EGLE Submitted to the Graduate College of' Texas A8cM University in partial f'ulfillment of the requirement f...' or the degree of MASTER OF ARTS May 1977 MaJor SubJect: English THE APPLICATION OF JO~ISTIC PRINCIPLES TO FRESHMAN ENGLISH: A MEANS OF ~IZING AUDIENCE AWARENESS A Thesis by ESTHER BEATRICE EGLE Approved as to style and content by: Chairman of Committee...

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

    Microsoft Academic Search

    Farzana Rahman; Ferdaus Ahmed Kawsar; Sheikh Iqbal Ahamed

    2010-01-01

    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

  5. Context assessment strategies for Ubiquitous Robots

    Microsoft Academic Search

    Fulvio Mastrogiovanni; Antonio Sgorbissa; Renato Zaccaria

    2009-01-01

    This paper presents an architecture for context-aware Ubiquitous Robotics applications, where mobile robots cooperate with intelligent environments to fulfill their tasks. Specifically, the work is focused on distributed knowledge representation issues and context assessment strategies, and introduces a technique for on-line context recognition in highly dynamic environments. Experimental validation, performed in a civillian hospital building, is described and discussed.

  6. There is more to context than location

    Microsoft Academic Search

    Albrecht Schmidt; Michael Beigl; Hans-werner Gellersen

    1999-01-01

    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,

  7. System Support for Partition-Aware Network Applications Ozalp Babaoglu Renzo Davoli Alberto Montresor Roberto Segala

    E-print Network

    Montresor, Alberto

    Network applications and services need to be en- vironment-aware in order to meet non-functional require, however, non-functional requirements can be just as important as their functional counterparts: the ser and configurability are examples of non- functional requirements that are of particular interest to net- work

  8. Secure SocialAware: A Security Framework for Mobile Social Networking Applications

    Microsoft Academic Search

    Aaron Beach; Mike Gartrell; Baishakhi Ray; Richard Han

    Social network information is now being used in ways for which it may have not been originally intended. In partic- ular, increased use of smartphones capable of running ap- plications which access social network information enable applications to be aware of a user's position and preferences. However, current models forexchangeof thisinformationre- quire users to compromise their privacy. We present a

  9. Application-aware DTN Routing Jorg Ott and Mikko Juhani Pitkanen

    E-print Network

    Ott, Jörg

    Application-aware DTN Routing J¨org Ott and Mikko Juhani Pitk¨anen .pitkanen@hip.fi> ABSTRACT Delay-tolerant networking (DTN) enables nodes to com- municate by means of asynchronous messaging for DTN routers. By adding explicit appli- cation hints visible to intermediate DTN nodes the latter can

  10. Network Awareness of P2P Live Streaming Applications: a Measurement Study

    E-print Network

    Telek, Miklós

    1 Network Awareness of P2P Live Streaming Applications: a Measurement Study Delia Ciullo, Maria Abstract--Early P2P-TV systems have already attracted mil- lions of users, and many new commercial to compare three of the most successful P2P-TV systems, namely PPLive, SopCast and TVAnts. Our goal

  11. Prometheus: User-Controlled P2P Social Data Management for Socially-Aware Applications

    E-print Network

    Borcea, Cristian

    from mobile phones. Unfortunately, this wealth of social information is fragmented across many witnessed the emergence of a wealth of socially-aware ap- plications, which utilize users' social in conjunction with location/collocation data to provide novel mobile applications such as Loopt, Brightkite

  12. Data Aware Caching for Big-Data Applications Using MapReduce

    E-print Network

    Wu, Jie

    Data Aware Caching for Big-Data Applications Using MapReduce Yaxiong Zhao, Jie Wu #12;Outline · MapReduce and big-data · Cache description · Protocol ­ Relationship between job types and cache organization · Conclusion #12;Outline · MapReduce and big-data · Cache description · Protocol ­ Cache request and reply

  13. Personal Contextual Awareness through Visual Focus

    E-print Network

    Robinson, John A.

    computer user's environment and personal activity, thus building an awareness of the user's context as some context-sensitive applications. The de ning character of this rst type is that the display rehabilitation and therapy, choreography, mapping and path nding, sports training (e.g. martial arts, tennis

  14. Energy aware design methodologies for application specific NoC

    Microsoft Academic Search

    Naveen Choudhary; M. S. Gaur; V. Laxmi; Virendra Singh

    2010-01-01

    Network-on-Chip (NoC) has emerged as a solution for communication framework for high-performance nanoscale architecture. One important aspect, in addition to deadlock-free routing, is low power consumption. In view of varied communication requirements, application specific SoC design is increasingly important. Customized NoC architectures are more suitable for a particular application, and do not necessarily conform to regular topologies. In this work,

  15. CLAMP : application merging in the ECOIN context mediation system using the context linking approach

    E-print Network

    Kaleem, M. Bilal (Mohammad Bilal), 1980-

    2003-01-01

    Integrating data from heterogeneous data sources means dealing with context differences. That is, differences in the assumptions that are made regarding format and interpretation of the data. The Context Interchange (COIN) ...

  16. Image Recognition in Context: Application to Microscopic Urinalysis

    E-print Network

    Xubo Song; Joseph Sill; Yaser Abu-mostafa; Harvey Kasdan

    2000-01-01

    . This technique is applied to microscopic urinalysis image recognition, resulting in a significant improvement of recognition rate over the context free approach. This gain would have been impossible using conventional context incorporation techniques. 1 BACKGROUND: RECOGNITION IN CONTEXT There are

  17. Cooperative I\\/O: a novel I\\/O semantics for energy-aware applications

    Microsoft Academic Search

    Andreas Weissel; Björn Beutel; Frank Bellosa

    2002-01-01

    In this paper we demonstrate the benefits of application involvement in operating system power management. We present Coop-I\\/O, an approach to reduce the power consumption of devices while encompassing all levels of the system---from the hardware and OS to a new interface for cooperative I\\/O that can be used by energy-aware applications. We assume devices which can be set to

  18. A transparent deployment method of RSVP-aware applications on UNIX

    Microsoft Academic Search

    Yu-ben Miao; Wen-shyang Hwang; Ce-kuen Shieh

    2002-01-01

    This paper proposes a method,called RLR (RSVP (Resource reSerVation Protocol) library redirection),which can transform legacy Internet applications into RSVP-aware applications without modifying their source files by redirecting procedure calls from the socket library to the RAPI library. This method can be fulfilled for UNIX operating systems, such as Linux and Free-BSD,etc.,since these operating systems support the related mechanisms of procedure

  19. An Energy-Aware Routing Protocol for Query-Based Applications in Wireless Sensor Networks

    PubMed Central

    Crespi, Noel

    2014-01-01

    Wireless sensor network (WSN) typically has energy consumption restriction. Designing energy-aware routing protocol can significantly reduce energy consumption in WSNs. Energy-aware routing protocols can be classified into two categories, energy savers and energy balancers. Energy saving protocols are used to minimize the overall energy consumed by a WSN, while energy balancing protocols attempt to efficiently distribute the consumption of energy throughout the network. In general terms, energy saving protocols are not necessarily good at balancing energy consumption and energy balancing protocols are not always good at reducing energy consumption. In this paper, we propose an energy-aware routing protocol (ERP) for query-based applications in WSNs, which offers a good trade-off between traditional energy balancing and energy saving objectives and supports a soft real time packet delivery. This is achieved by means of fuzzy sets and learning automata techniques along with zonal broadcasting to decrease total energy consumption. PMID:24696640

  20. An energy-aware routing protocol for query-based applications in wireless sensor networks.

    PubMed

    Ahvar, Ehsan; Ahvar, Shohreh; Lee, Gyu Myoung; Crespi, Noel

    2014-01-01

    Wireless sensor network (WSN) typically has energy consumption restriction. Designing energy-aware routing protocol can significantly reduce energy consumption in WSNs. Energy-aware routing protocols can be classified into two categories, energy savers and energy balancers. Energy saving protocols are used to minimize the overall energy consumed by a WSN, while energy balancing protocols attempt to efficiently distribute the consumption of energy throughout the network. In general terms, energy saving protocols are not necessarily good at balancing energy consumption and energy balancing protocols are not always good at reducing energy consumption. In this paper, we propose an energy-aware routing protocol (ERP) for query-based applications in WSNs, which offers a good trade-off between traditional energy balancing and energy saving objectives and supports a soft real time packet delivery. This is achieved by means of fuzzy sets and learning automata techniques along with zonal broadcasting to decrease total energy consumption. PMID:24696640

  1. Location-Aware Mobile Multimedia Applications on the Niccimon platform

    E-print Network

    Appelrath, Hans-Jürgen

    |appelrath}@informatik.uni-oldenburg.de Abstract. In this paper, we present the Niccimon platform for the flexible and rapid development on this plat- form, we developed two demonstrator applications: a personalized mobile multimedia tourist guide research and industry. The platform is an important tool to allow the rapid development of prototypes

  2. The Illinois Office of Education Consulting/Linkage Skills Awareness Workshop. Context, Activities, and Implications for Future Training. A Report.

    ERIC Educational Resources Information Center

    CEMREL, Inc., St. Ann, MO.

    During the week of July 11, 1977, the Illinois Office of Education (IOE) hosted a consulting/linkage skills awareness workshop in Springfield, Illinois. The workshop was part of a reorganization process that began in 1975 when IOE planners determined to separate the regulatory functions from the service functions of the agency. As a result, the…

  3. Video-Based Eye Tracking to Detect the Attention Shift: A Computer Classroom Context-Aware System

    ERIC Educational Resources Information Center

    Kuo, Yung-Lung; Lee, Jiann-Shu; Hsieh, Min-Chai

    2014-01-01

    Eye and head movements evoked in response to obvious visual attention shifts. However, there has been little progress on the causes of absent-mindedness so far. The paper proposes an attention awareness system that captures the conditions regarding the interaction of eye gaze and head pose under various attentional switching in computer classroom.…

  4. Understanding Total Quality Management in Context: Qualitative Research on Managers' Awareness of TQM Aspects in the Greek Service Industry

    ERIC Educational Resources Information Center

    Psychogios, Alexandros G.; Priporas, Constantinos-Vasilios

    2007-01-01

    This study addresses managers' awareness and familiarity with Total Quality Management (TQM). Eighteen (18) semi-structured, in-depth interviews were conducted with managers working in a variety of service organizations in Greece. The major argument of the study is that although the acronym TQM and some of its concepts and practices are known by a…

  5. A Location-Aware Architecture Supporting Intelligent Real-Time Mobile Applications

    Microsoft Academic Search

    Sean J. Barbeau

    2012-01-01

    This dissertation presents LAISYC, a modular location-aware architecture for intelligent real-time mobile applications that is fully-implementable by third party mobile app developers and supports high-precision and high-accuracy positioning systems such as GPS. LAISYC significantly improves device battery life, provides location data authenticity, ensures security of location data, and significantly reduces the amount of data transferred between the phone and server.

  6. A tool for creating eye-aware applications that adapt to changes in user behaviors

    Microsoft Academic Search

    Gregory W. Edwards; Archimedes Project

    1998-01-01

    A development tool is described that can be used to create eye-aware software applications that adapt in real-time to changes in a user’s natural eye-movement behaviors and intentions. The research involved in developing this tool focuses on identifying patterns of eye-movement that describe three behaviors: Knowledgeable Movement, Searching, and Prolonged Searching. In the process of doing the research, two important

  7. Antibody performance in western blot applications is context-dependent.

    PubMed

    Algenäs, Cajsa; Agaton, Charlotta; Fagerberg, Linn; Asplund, Anna; Björling, Lisa; Björling, Erik; Kampf, Caroline; Lundberg, Emma; Nilsson, Peter; Persson, Anja; Wester, Kenneth; Pontén, Fredrik; Wernérus, Henrik; Uhlén, Mathias; Ottosson Takanen, Jenny; Hober, Sophia

    2014-03-01

    An important concern for the use of antibodies in various applications, such as western blot (WB) or immunohistochemistry (IHC), is specificity. This calls for systematic validations using well-designed conditions. Here, we have analyzed 13?000 antibodies using western blot with lysates from human cell lines, tissues, and plasma. Standardized stratification showed that 45% of the antibodies yielded supportive staining, and the rest either no staining (12%) or protein bands of wrong size (43%). A comparative study of WB and IHC showed that the performance of antibodies is application-specific, although a correlation between no WB staining and weak IHC staining could be seen. To investigate the influence of protein abundance on the apparent specificity of the antibody, new WB analyses were performed for 1369 genes that gave unsupportive WBs in the initial screening using cell lysates with overexpressed full-length proteins. Then, more than 82% of the antibodies yielded a specific band corresponding to the full-length protein. Hence, the vast majority of the antibodies (90%) used in this study specifically recognize the target protein when present at sufficiently high levels. This demonstrates the context- and application-dependence of antibody validation and emphasizes that caution is needed when annotating binding reagents as specific or cross-reactive. WB is one of the most commonly used methods for validation of antibodies. Our data implicate that solely using one platform for antibody validation might give misleading information and therefore at least one additional method should be used to verify the achieved data. PMID:24403002

  8. Morphological awareness assessment and intervention to improve language and literacy.

    PubMed

    Wolter, Julie A; Gibson, Frances E

    2015-02-01

    Morphological awareness positively influences language and literacy development and may be an ideal intervention focus for improving vocabulary, sight word reading, reading decoding, and reading comprehension in students with and without language and literacy deficits. This article will provide supporting theory, research, and strategies for implementing morphological awareness intervention with students with language and literacy deficits. Additionally, functional connections are explored through the incorporation and application of morphological awareness intervention in academic literacy contexts linked to Common Core State Standards. PMID:25633142

  9. Network awareness in P2P-TV applications S. Traverso, E. Leonardi, M. Mellia, and M. Meo

    E-print Network

    Network awareness in P2P-TV applications S. Traverso, E. Leonardi, M. Mellia, and M. Meo-streaming based on P2P paradigm (P2P-TV) is raising the interest of both broadcasters and net- work operators. The "Network-Aware P2P-TV Application over Wise Networks" FP7 project aims at studying and developing a novel P

  10. Towards A General Approach for Reasoning about Context, Situations and Uncertainty in Ubiquitous Sensing: Putting Geometrical Intuitions to Work 1

    E-print Network

    Loke, Seng W. - Loke, Seng W.

    environments and the diversity of possible situations that may affect context-aware applications' behaviorTowards A General Approach for Reasoning about Context, Situations and Uncertainty in Ubiquitous necessitate investigation of context awareness that would provide feasible solutions by means of models

  11. Application of geosites assessment method in geopark context

    NASA Astrophysics Data System (ADS)

    Martin, Simon; Perret, Amandine; Renau, Pierre; Cartier-Moulin, Olivier; Regolini-Bissig, Géraldine

    2014-05-01

    The regional natural park of the Monts d'Ardèche (Ardèche and Haute-Loire departments, France) is candidate to the European Geopark Network (EGN) in 2014. The area has a wide geodiversity - with rocks from Cambrian to Pleistocene (basalt flows) - and interesting features like phonolitic protrusions, maars and granite boulders fields. Around 115 sites were selected and documented through a geosites inventory carried out in the territory. This pre-selection was supervised by the Ardèche Geological Society and is therefore expert advice based. In the context of EGN candidature, these potential geosites were assessed with a simplified method. It follows the spirit of the method from the University of Lausanne (Reynard et al., 2007) and its recent developments: assessment of the scientific (central) value and of a set of additional values (ecological and cultural). As this assessment aimed to offer a management tool to the future geopark's authorities, a special focus was given to management aspects. In particular, the opportunities to use the site for education (from schools to universities) and for tourism as well as the existence of protection and of interpretive facilities were documented and assessed. Several interesting conclusions may be drawn from this case study: (1) expert assessment is effective when it is based on a pre-existing inventory which is well structured and documented; (2) even simplified, an assessment method is a very useful framework to expert assessment as it focuses the discussions on most important points and helps to balance the assessment; (3) whereas the inventory can be extensively detailed and partly academic, the assessment in the geopark context is objective-driven in order to answer management needs. The place of the geosites assessment among the three key players of a geopark construction process (i.e. territory's managers, local geoscientists and EGN) is also discussed. This place can be defined as the point of consensus of needs and wishes of all stakeholders. For instance, the local geoscientists are most interested in conservation and scientific interests whereas managers aim to develop and promote the tourist (and economic) dimension. The definition and application of the assessment method is the outcome of constant discussion with both local key players; it therefore reflects and moderates the - sometimes antagonistic - interests. All the discussions around geosites assessment can be considered as the prime mover at local scale of the geopark construction process. This example shows that geosites assessment can not be considered only as an academic operation, but also as an essential step to initiate a local dynamic and consensus that help to achieve some of the objectives of a geopark defined by EGN like local involvement, sustainable development, or cooperation with local communities.

  12. ContextContacts: re-designing SmartPhone's contact book to support mobile awareness and collaboration

    Microsoft Academic Search

    Antti Oulasvirta; Mika Raento; Sauli Tiitta

    2005-01-01

    Acontextuality of the mobile phone often leads to a caller's uncertainty over a callee's current state, which in turn often hampers mobile collaboration. We are interested in re-designing a Smartphone's contact book to provide cues of the current situations of others. ContextContacts presents several meaningful, automatically communicated situation cues of trusted others. Its interaction design follows social psychological findings on

  13. Separation, Review and Supervision Controls in the Context of a Credit Application Process

    E-print Network

    Moffett, Jonathan

    application process at the branch level of a bank. The case study has been performed in the contextSeparation, Review and Supervision Controls in the Context of a Credit Application Process ­ A Case@cs.york.ac.uk ABSTRACT This paper presents a case study of the organisational control principles present in a credit

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

    Microsoft Academic Search

    Diane H. Sonnenwald; Linda G. Pierce

    2000-01-01

    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

  15. Resolving and Mediating Ambiguous Contexts for Pervasive Care Environments

    E-print Network

    Julien, Christine

    ), context state (Si) and situation space (Ri), and attempts to incorporate various intuitions that should, a significant challenge facing the development of realistic and deployable context-aware services for healthcare applications is the ability to deal with ambiguous contexts to prevent hazardous situations. In this work, we

  16. [Well-being and safety awareness in the context of hospital units related to work place quality].

    PubMed

    Nenci, A M; Romano, C; Santoro, P E; Fornara, F; Caddeo, P; Bonacasa, V

    2007-01-01

    Several studies founded a positive relationship between environmental work stresses, perceived safety of work places and number of injuries. This study tested the relationship between cognitive dimensions of environmental quality, dimensions of affective quality, and perceived safety in the context of hospital units. A total of 204 hospital workers filled in a questionnaire measuring Perceived Hospital Environment Quality Indicators (PHEQIs: Fornara et al., 2006), Affective Qualities of Places (Perugini et al., 20021, and the Work Safety (WSS: Hayes et al., 1998). Results show a positive relationship between subjective indicators (both cognitive and affective) of environmental quality and specific dimensions of perceived safety in hospital units. PMID:18409943

  17. Applicant Reactions to Test Score Banding in Entry-Level and Promotional Contexts

    Microsoft Academic Search

    Donald M. Truxillo; Talya N. Bauer

    1999-01-01

    This series of field studies used a fairness framework to investigate applicant reactions to test score banding in 3 police selection contexts. Studies 1 (N = 85) and 2 (N = 369) involved applicants for entry-level positions, and Study 3 (N = 39) involved applicants for promotion. Across all 3 studies, race interacted with applicants' belief that banding is associated

  18. Towards a multidisciplinary user-centric design framework for context-aware applications

    E-print Network

    Dunlop, Mark D.

    . Visually impaired people, for instance, used considerably more contextual information generally and used people, in order to ascertain how people use clues in the environment to navigate and orientate [3, 4 participants were quicker using proportioned visually impaired peoples descriptions, which was also reflective

  19. Context-awareness Support for Mobile Phones: Integrative Method and Applications

    E-print Network

    Cho, Sung-Bae

    . Ranganathan, J. Al-Muhtadi, S. Chetan, R. Campbell andM.Korpipaa,J.Mantyjarvi,J.Kela,H.Keranen,and E.-J.Malm,Managingcontextinformationinmobile devices,IEEEPervasiveComputing,Vol.2,No.3, 2003,pp.42-51. [8] Y.-S.Lee,M.-C.JungandS.-B.Cho,Collectionand constructionofuser scontextinsmartphone,Proc.of KCC

  20. CARISMA: Context-Aware Reflective mIddleware System for Mobile Applications

    E-print Network

    Mascolo, Cecilia

    . INTRODUCTION MOBILE computing devices, such as palmtop computers, mobile phones, personal digital assistants Emmerich and Cecilia Mascolo Abstract-- Mobile devices, such as mobile phones and personal digital assistants, have gained wide-spread popularity. These devices will increasingly be networked, thus enabling

  1. QoS-aware Routing for Real-Time and Multimedia Applications in Mobile Ad Hoc Networks

    E-print Network

    Paris-Sud XI, Université de

    QoS-aware Routing for Real-Time and Multimedia Applications in Mobile Ad Hoc Networks David Espes and delay guarantees. Most of QoS ad hoc network routing protocols select path guaranteeing delay and applications led to the need to consider QoS support. One of the key issues to provide QoS guarantees in MANETs

  2. Image Recognition in Context: Application to Microscopic Urinalysis

    Microsoft Academic Search

    Xubo B. Song; Joseph Sill; Yaser S. Abu-mostafa; Harvey Kasdan

    1999-01-01

    Abstract We propose a new and efficient technique for incorporating co ntextual information into object classification. Most of the current techniq ues face the problem of exponential computation cost. In this paper, we propose a new general framework that incorporates partial context at a linear cost. This technique is applied to microscopic urinalysis image recognition, resulting in a significant improvement

  3. Six in the city: introducing Real Tournament - a mobile IPv6 based context-aware multiplayer game

    Microsoft Academic Search

    Keith Mitchell; Duncan McCaffery; George Metaxas; Joe Finney; Stefan Schmid; Andrew Scott

    2003-01-01

    It is rapidly becoming clear that entertainment will be one of the killer applications of future wireless networks. More specifically mobile gaming is predicted to be worth $1.2 billion by the year 2006 to providers in the U.S. alone [20]. The driving force behind this is the introduction of powerful feature rich handsets and ubiquitous access to high performance wireless

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

    SciTech Connect

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

    2009-12-21

    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.

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

    NASA Astrophysics Data System (ADS)

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

    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.

  6. Engineering mobile-agent applications via context-dependent coordination

    Microsoft Academic Search

    Giacomo Cabri; Letizia Leonardi; Franco Zambonelli

    2001-01-01

    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

  7. An Energy-Flow Model for Self-Powered Routers and its Application for Energy-Aware Routing

    E-print Network

    Belding-Royer, Elizabeth M.

    An Energy-Flow Model for Self-Powered Routers and its Application for Energy-Aware Routing Veljko@inf.ed.ac.uk ABSTRACT Self-powered wireless mesh networks have gained popularity as a cheap alternative for providing of electrical energy. Depen- dence on renewable energy sources and variable power consump- tion make

  8. Application-aware scheduling for VoIP in Wireless Mesh Networks Nico Bayer a,*, Bangnan Xu a

    E-print Network

    Rakocevic, Veselin

    Application-aware scheduling for VoIP in Wireless Mesh Networks Nico Bayer a,*, Bangnan Xu Mesh Network Voice over IP ­ VoIP Quality of Service ­ QoS Delay Jitter Packet error rate Multi for Voice over IP (VoIP) traffic, which has strict performance require- ments in terms of delay, jitter

  9. A Sandbox with a Dynamic Policy Based on Execution Contexts of Applications

    Microsoft Academic Search

    Tomohiro Shioya; Yoshihiro Oyama; Hideya Iwasaki

    2007-01-01

    We propose a sandbox system that dynamically changes its behavior according to the application’s execution context. Our system\\u000a allows users to give different policies, each of which specifies permitted system calls, depending on the user functions in\\u000a which the target application is executing. The target application can be given less privilege than would be possible with\\u000a other single-policy sandbox systems.

  10. Application-Aware Scheduling of a Magnetohydrodynamics Application in the Legion Metasystem

    Microsoft Academic Search

    Holly Dail; Graziano Obertelli; Francine Berman; Richard Wolski; Andrew S. Grimshaw

    2000-01-01

    Computational Grids have become an important and popular computing platform for both scientific and commer- cial distributed computing communities. However, users of such systems typically find achievement of application ex- ecution performance remains challenging. Although Grid infrastructures such as Legion and Globus provide basic re- source selection functionality, work allocation functional- ity, and scheduling mechanisms, applications must interpret system performance

  11. Privacy in context: Privacy issues in Ubiquitous Computing applications

    Microsoft Academic Search

    Ciaran O'driscoll

    2008-01-01

    This paper presents a review of privacy issues and guidelines for developing and assessing privacy-sensitive ubiquitous computing applications. Privacy is discussed to determine factors that affect peoples own privacy preferences in public and private environments. Ubiquitous environments based on invisible computers provide a particular challenge where limited user interfaces exist to inform users of the level of data collection and

  12. Context Issues in RFID Systems

    Microsoft Academic Search

    Jong-myung Choi; Joon-sung Park

    2007-01-01

    Recently RFID has been receiving attention from ubiquitous computing researchers because of its potential in context-aware services. In this paper, we survey the existing context-aware RFID systems and introduce four context related issues in the systems: context, context-aware service types, system architecture, and middleware. Our work will help stakeholders including customers, analysts, developers, programmers, and testers to understand the systems,

  13. An adaptive process-based cloud infrastructure for space situational awareness applications

    NASA Astrophysics Data System (ADS)

    Liu, Bingwei; Chen, Yu; Shen, Dan; Chen, Genshe; Pham, Khanh; Blasch, Erik; Rubin, Bruce

    2014-06-01

    Space situational awareness (SSA) and defense space control capabilities are top priorities for groups that own or operate man-made spacecraft. Also, with the growing amount of space debris, there is an increase in demand for contextual understanding that necessitates the capability of collecting and processing a vast amount sensor data. Cloud computing, which features scalable and flexible storage and computing services, has been recognized as an ideal candidate that can meet the large data contextual challenges as needed by SSA. Cloud computing consists of physical service providers and middleware virtual machines together with infrastructure, platform, and software as service (IaaS, PaaS, SaaS) models. However, the typical Virtual Machine (VM) abstraction is on a per operating systems basis, which is at too low-level and limits the flexibility of a mission application architecture. In responding to this technical challenge, a novel adaptive process based cloud infrastructure for SSA applications is proposed in this paper. In addition, the details for the design rationale and a prototype is further examined. The SSA Cloud (SSAC) conceptual capability will potentially support space situation monitoring and tracking, object identification, and threat assessment. Lastly, the benefits of a more granular and flexible cloud computing resources allocation are illustrated for data processing and implementation considerations within a representative SSA system environment. We show that the container-based virtualization performs better than hypervisor-based virtualization technology in an SSA scenario.

  14. Launching Context-Aware Visualisations

    Microsoft Academic Search

    Jaakko Salonen; Jukka Huhtamäki

    2010-01-01

    \\u000a Web is more pervasive than ever: it is being used with an increasing range of browsers and devices for a plethora of tasks.\\u000a As such, exciting possibilities for information visualisation have become available: data is potentially highly relevant,\\u000a easy to access and readily available in structured formats. For the task of visualisation, the diversity of the Web is both\\u000a a

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

    PubMed Central

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

    2010-01-01

    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. PMID:20439251

  16. Ontology-based situation awareness

    Microsoft Academic Search

    Mieczyslaw M. Kokar; Christopher J. Matheus; Kenneth Baclawski

    2009-01-01

    The notions of ''situation'' and ''situation awareness'' have been formulated by many authors in various contexts. In this paper, we present a formalization of situations that is compatible with the interpretation of situation awareness in terms of human awareness as well as the situation theory of Barwise and Devlin. The purpose of this paper is to capture the situation theory

  17. Ontology-Based Context Awareness for Driving Assistance Systems Alexandre Armand1,2, David Filliat1, Javier Ibaez-Guzman2

    E-print Network

    Paris-Sud XI, Université de

    and contextual data. Further, it can be used to improve the situation awareness of an ADAS (Advanced Driving the situation awareness. This contextual data enables to give sense to the acquired sensor information, to understand how entities are expected to behave in the driving space. For example, in the situation 2 of Fig

  18. Modelling turbulent separated flow in the context of aerodynamic applications

    NASA Astrophysics Data System (ADS)

    Leschziner, M. A.

    2006-02-01

    In contrast to rapid advances in computing, numerical methods and visualisation, the predictive capabilities of statistical models of turbulence are limited and improve only slowly, despite much intensive research in the recent past. The intuitive nature of turbulence modelling, its strong reliance on calibration and validation, the extreme sensitivity of model performance to seemingly minor variations in modelling details and flow conditions, and the fact that the non-local dynamics of turbulence are not well captured by single-point closure, all conspire to make turbulence modelling an especially demanding component of CFD, but one that is crucially important for the correct prediction of complex flows. This applies in particular to separation from streamlined bodies, which is, from a computational point of view, the most challenging flow feature in aeronautical CFD. This paper reviews some aspects of the foundation and application of turbulence models to flows that relate to aeronautical practice, with particular emphasis being placed on turbulence-transport models at a closure level higher than that based on the Boussinesq-viscosity hypothesis. Following a review of basic modelling issues, including aspects of linear-eddy-viscosity two-equation modelling, some recent experience and current work on predicting separation from continuous surfaces with non-linear eddy-viscosity models and second-moment closure are reported. The predictive performance of several anisotropy-resolving models is illustrated by reference to computational solutions for a number of flows, both two- and three-dimensional, some compressible and others incompressible.

  19. Context for Ubiquitous Data Management

    Microsoft Academic Search

    Arthur H. Van Bunningen; Ling Feng; Peter M. G. Apers

    2005-01-01

    In response to the advance of ubiquitous computing tech- nologies, we believe that for computer systems to be ubiq- uitous, they must be context-aware. In this paper, we ad- dress the impact of context-awareness on ubiquitous data management. To do this, we overview different character- istics of context in order to develop a clear understanding of context, as well as

  20. An Embeddable Fusion Framework to Manage Context Information in Mobile Devices

    NASA Astrophysics Data System (ADS)

    Bernardos, Ana M.; Madrazo, Eva; Casar, José R.

    Conveniently fused and combined with data from external sources, information from sensors embedded in a mobile device may offer a dynamic view of the user's situation, sufficient to build adaptive context-aware services. In order to shorten the development cycle of these applications, an embeddable framework to acquire, fuse and reason on context information is hereby described. 'CASanDRA Mobile' is designed to work autonomously in resource-constrained devices, offering to application developers a transparent management of context information. Based on a service-oriented architecture implemented in mobile OSGi, it offers a scalable infrastructure of bundles which decouple context acquisition and automate context inference from application development. 'CASanDRA Mobile' aims at providing the user with full control on his private context data, by using privacy policies suitable to handle P2P context sharing. To exemplify how to use the framework features, the design procedure for a context-aware wellness application is described.

  1. Distributed situation awareness in dynamic systems: theoretical development and application of an ergonomics methodology

    Microsoft Academic Search

    Neville A. Stanton; Rebecca Stewart; Don Harris; Robert J. Houghton; C. Baber; R. McMaster; P. Salmon; G. Hoyle; G. Walker; M. S. Young; M. Linsell; R. Dymott; D. Green

    2006-01-01

    The purpose of this paper is to propose foundations for a theory of situation awareness based on the analysis of interactions between agents (i.e. both human and non-human) in subsystems. This approach may help to promote a better understanding of technology-mediated interaction in systems, as well as helping in the formulation of hypotheses and predictions concerning distributed situation awareness. It

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

    ERIC Educational Resources Information Center

    Roth, Gene L.; Vivona, Brian

    2010-01-01

    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…

  3. Using Simplified Regulated Breathing with an Adolescent Stutterer: Application of Effective Intervention in a Residential Context

    ERIC Educational Resources Information Center

    Freeman, Kurt A.; Friman, Patrick C.

    2004-01-01

    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…

  4. TIME-FREQUENCY-PHASE TRACKING APPROACH : APPLICATION TO UNDERWATER SIGNALS IN A PASSIVE CONTEXT

    E-print Network

    Paris-Sud XI, Université de

    TIME-FREQUENCY-PHASE TRACKING APPROACH : APPLICATION TO UNDERWATER SIGNALS IN A PASSIVE CONTEXT of time-frequency representations deals with the analysis of the signal issued from natural environment of the information carried out by the natural signals. Taken into account the non-linear multi-component time-frequency

  5. Smartphone usage in the wild: a large-scale analysis of applications and context

    Microsoft Academic Search

    Trinh Minh Tri Do; Jan Blom; Daniel Gatica-Perez

    2011-01-01

    This paper presents a large-scale analysis of contextualized smartphone usage in real life. We introduce two contextual variables that condition the use of smartphone applications, namely places and social context. Our study shows strong dependencies between phone usage and the two contextual cues, which are automatically extracted based on multiple built-in sensors available on the phone. By analyzing continuous data

  6. Anesthesia Awareness

    MedlinePLUS

    Anesthesia Awareness Very rarely – in only one or two out of every 10,000 medical procedures involving anesthesia – a patient may become aware or conscious. The condition – called anesthesia awareness – means the patient can recall the surroundings ...

  7. Context Inference of Users' Social Relationships and Distributed Policy Management

    Microsoft Academic Search

    Alisa Devlic; Roland Reichle; Michael Wagner; Manuele Kirsch-pinheiro; Yves Vanrompay; Yolande Berbers; Massimo Valla

    2009-01-01

    Inference of high-level context is becoming crucial in development of context-aware applications. An example is social context inference - i.e., deriving social relations based upon the user's daily communication with other people. The efficiency of this mechanism mainly depends on the method(s) used to draw inferences based on existing evidence and sample information, such as a training data. Our approach

  8. Designing for privacy and self-presentation in social awareness

    Microsoft Academic Search

    Mika Raento; Antti Oulasvirta

    2008-01-01

    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

  9. Environmental Awareness (Sensory Awareness).

    ERIC Educational Resources Information Center

    Carpenter, Marian

    Capitalizing on the resources available within a city block, this resource guide for the emotionally handicapped (K-6) describes methods and procedures for developing sensory awareness in the urban out-of-doors. Conceptual focus is on interdependency ("living things are interdependent"). Involvement in the environment (observing, thinking, doing)…

  10. Mobile Context Provider for Social Networking

    NASA Astrophysics Data System (ADS)

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

    The ability to infer user context based on a mobile device together with a set of external sensors opens up the way to new context-aware services and applications. In this paper, we describe a mobile context provider that makes use of sensors available in a smartphone as well as sensors externally connected via bluetooth. We describe the system architecture from sensor data acquisition to feature extraction, context inference and the publication of context information to well-known social networking services such as Twitter and Hi5. In the current prototype, context inference is based on decision trees, but the middleware allows the integration of other inference engines. Experimental results suggest that the proposed solution is a promising approach to provide user context to both local and network-level services.

  11. High Performance Computing Software Applications for Space Situational Awareness Dr. Concetto R. Giuliano, Dr. Paul W. Schumacher Jr., Dr. Charles L. Matson

    Microsoft Academic Search

    R. Bruce Duncan; Robert DeSonia; George Gusciora; Kevin Roe; Kathy J. Borelli

    The High Performance Computing Software Applications Institute for Space Situational Awareness (HSAI-SSA) has completed its first full year of applications development. The emphasis of our work in this first year was in improving space surveillance sensor models and image enhancement software. These applications are the Space Surveillance Network Analysis Model (SSNAM), the Air Force Space Surveillance Fence System simulation (SimFence),

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

    Microsoft Academic Search

    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

    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

  13. An energy-aware multiple-input power supply with charge recovery for energy harvesting applications

    Microsoft Academic Search

    Nathaniel J. Guilar; Rajeevan Amirtharajah; Paul J. Hurst; Stephen H. Lewis

    2009-01-01

    This paper describes an integrated power management system for use with multiple energy harvesters, which employs energy awareness and charge recycling. Previous multiple-input power management systems only allow energy to be harvested from a single source at a time (typically the source with the largest voltage) thereby wasting the energy from the other energy harvesters. In order to increase the

  14. Research Application: Influence of Industrial Arts on Career Awareness at the Third Grade Level

    ERIC Educational Resources Information Center

    Goodness, Lee R.

    1978-01-01

    A study of sixty third-grade students at Henry Barnard School, Providence, Rhode Island, concluded that an elementary industrial arts program contributes to the career awareness of such students but that mental ability has a greater influence than instructional strategy. (MF)

  15. Daytime Image Measurement and Reconstruction for Space Situational Awareness Applications (Paper ID number 4231324)

    Microsoft Academic Search

    M. Roggemann; D. Douglas; E. Therkildsen; D. Archambeault; R. Maeda; D. Schultz; B. Wheeler

    2010-01-01

    An operational technology for imaging satellites during the daytime hours would vastly increase the ability of optical space situational awareness (SSA) systems to gather information about satellites. During the day the atmospheric seeing is generally worse than in terminator, and the contribution of sky background noise to the image measurement is significant. We have developed a straightforward model for estimating

  16. Situation awareness measurement: A review of applicability for C4i environments

    Microsoft Academic Search

    Paul Salmon; Neville Stanton; Guy Walker; Damian Green

    2006-01-01

    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

  17. Awareness, knowledge and application of memory rehabilitation among community psychiatric nurses working with dementia

    Microsoft Academic Search

    Susan M. B. Cross; Niall M. Broomfield; Rachel Davies; Jonathan J. Evans

    2008-01-01

    This paper aims to establish the extent to which memory rehabilitation is carried out by Community Psychiatric Nurses (CPNs) working with dementia; to investigate awareness and knowledge of memory rehabilitation and memory processes amongst CPNs; and to explore the factors that influence deployment of memory rehabilitation advice. Participants, consisting of sixty five Community Psychiatric Nursing staff working in Community Mental

  18. Location aware applications for smart cities with Google maps and GIS tools

    Microsoft Academic Search

    Siak Chuan Tan; On Wong

    2006-01-01

    The release of internet mapping API like Google maps had changed the way many location aware systems works, this paper will look into how location visualization tools can make use of this new way in providing location service. With the emergence of wireless broadband internet in increasing number of cities, digital cities are being developed all over the world where

  19. Exchanging the Context between OGC Geospatial Web clients and GIS applications using Atom

    NASA Astrophysics Data System (ADS)

    Maso, Joan; Díaz, Paula; Riverola, Anna; Pons, Xavier

    2013-04-01

    Currently, the discovery and sharing of geospatial information over the web still presents difficulties. News distribution through website content was simplified by the use of Really Simple Syndication (RSS) and Atom syndication formats. This communication exposes an extension of Atom to redistribute references to geospatial information in a Spatial Data Infrastructure distributed environment. A geospatial client can save the status of an application that involves several OGC services of different kind and direct data and share this status with other users that need the same information and use different client vendor products in an interoperable way. The extensibility of the Atom format was essential to define a format that could be used in RSS enabled web browser, Mass Market map viewers and emerging geospatial enable integrated clients that support Open Geospatial Consortium (OGC) services. Since OWS Context has been designed as an Atom extension, it is possible to see the document in common places where Atom documents are valid. Internet web browsers are able to present the document as a list of items with title, abstract, time, description and downloading features. OWS Context uses GeoRSS so that, the document can be to be interpreted by both Google maps and Bing Maps as items that have the extent represented in a dynamic map. Another way to explode a OWS Context is to develop an XSLT to transform the Atom feed into an HTML5 document that shows the exact status of the client view window that saved the context document. To accomplish so, we use the width and height of the client window, and the extent of the view in world (geographic) coordinates in order to calculate the scale of the map. Then, we can mix elements in world coordinates (such as CF-NetCDF files or GML) with elements in pixel coordinates (such as WMS maps, WMTS tiles and direct SVG content). A smarter map browser application called MiraMon Map Browser is able to write a context document and read it again to recover the context of the previous view or load a context generated by another application. The possibility to store direct links to direct files in OWS Context is particularly interesting for GIS desktop solutions. This communication also presents the development made in the MiraMon desktop GIS solution to include OWS Context. MiraMon software is able to deal either with local files, web services and database connections. As in any other GIS solution, MiraMon team designed its own file (MiraMon Map MMM) for storing and sharing the status of a GIS session. The new OWS Context format is now adopted as an interoperable substitution of the MMM. The extensibility of the format makes it possible to map concepts in the MMM to current OWS Context elements (such as titles, data links, extent, etc) and to generate new elements that are able to include all extra metadata not currently covered by OWS Context. These developments were done in the nine edition of the OpenGIS Web Services Interoperability Experiment (OWS-9) and are demonstrated in this communication.

  20. Situational awareness and safety

    Microsoft Academic Search

    N. A Stanton; P. R. G Chambers; J Piggott

    2001-01-01

    This paper considers the applicability of situation awareness concepts to safety in the control of complex systems. Much of the research to date has been conducted in aviation, which has obvious safety implications. It is argued that the concepts could be extended to other safety critical domains. The paper presents three theories of situational awareness: the three-level model, the interactive

  1. Situation Awareness Unified Process

    Microsoft Academic Search

    Vikram Sorathia; Anutosh Maitra

    2007-01-01

    This paper identifies the process for developing information system for situation awareness application domain and identifies novel process artifacts that need to be introduced along with existing approaches. Appropriately engineered method is an important requirement for successful implementation of any software system targeted at situation awareness. When it comes to information system development (ISD) for dynamic organizations, the method engineering

  2. Exploiting application locality to design low-complexity, highly performing, and power-aware embedded classifiers

    Microsoft Academic Search

    Cesare Alippi; Fabio Scotti

    2006-01-01

    Temporal and spatial locality of the inputs, i.e., the property allowing a classifier to receive the same samples over time-or samples belonging to a neighborhood-with high probability, can be translated into the design of embedded classifiers. The outcome is a computational complexity and power aware design particularly suitable for implementation. A classifier based on the gated-parallel family has been found

  3. The Awareness-Privacy Tradeoff in Video Supported Informal Awareness

    E-print Network

    Stasko, John T.

    of privacy. An important open problem in this area is how to foster awareness of colleagues without. This continuous-access requirement poses a difficult problem in media space applications: how to balance awareness and privacy. On one hand, users must have access to awareness information about other users. Guided by social

  4. Overview of Cyber Situation Awareness

    Microsoft Academic Search

    George P. Tadda; John S. Salerno

    Improving a decision maker’s1 situational awareness of the cyber domain isn’t greatly different than enabling situation awareness in more traditional domains2. Situation awareness necessitates working with processes capable of identifying domain specific activities as well as processes\\u000a capable of identifying activities that cross domains. These processes depend on the context of the environment, the domains,\\u000a and the goals and interests

  5. Overview of Cyber Situation Awareness

    Microsoft Academic Search

    George P. Tadda; John S. Salerno

    2010-01-01

    Improving a decision maker's1 situational awareness of the cyber domain isn't greatly different than enabling situation awareness in more traditional domains2. Situation awareness necessitates working with processes capable of identifying domain specific activities as well as processes capable of identifying activities that cross domains. These processes depend on the context of the environment, the domains, and the goals and interests

  6. Application of a plume model for decision makers' situation awareness during an outdoor airborne HAZMAT release.

    PubMed

    Meris, Ronald G; Barbera, Joseph A

    2014-01-01

    In a large-scale outdoor, airborne, hazardous materials (HAZMAT) incident, such as ruptured chlorine rail cars during a train derailment, the local Incident Commanders and HAZMAT emergency responders must obtain accurate information quickly to assess the situation and act promptly and appropriately. HAZMAT responders must have a clear understanding of key information and how to integrate it into timely and effective decisions for action planning. This study examined the use of HAZMAT plume modeling as a decision support tool during incident action planning in this type of extreme HAZMAT incident. The concept of situation awareness as presented by Endsley's dynamic situation awareness model contains three levels: perception, comprehension, and projection. It was used to examine the actions of incident managers related to adequate data acquisition, current situational understanding, and accurate situation projection. Scientists and engineers have created software to simulate and predict HAZMAT plume behavior, the projected hazard impact areas, and the associated health effects. Incorporating the use of HAZMAT plume projection modeling into an incident action plan may be a complex process. The present analysis used a mixed qualitative and quantitative methodological approach and examined the use and limitations of a "HAZMAT Plume Modeling Cycle" process that can be integrated into the incident action planning cycle. HAZMAT response experts were interviewed using a computer-based simulation. One of the research conclusions indicated the "HAZMAT Plume Modeling Cycle" is a critical function so that an individual/team can be tasked with continually updating the hazard plume model with evolving data, promoting more accurate situation awareness. PMID:25350360

  7. A Design Framework for Awareness Systems

    NASA Astrophysics Data System (ADS)

    Markopoulos, Panos

    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).

  8. Developing geosensor network support for Locawe platform: application of standards in low-rate communication context

    Microsoft Academic Search

    Mika Luimula; Zach Shelby; Jouni Tervonen; Jouni Markkula; Petteri Weckström; Pertti Verronen

    2009-01-01

    Wireless sensor and actuator networks (WSAN) are a combination of embedded, wireless and positioning technologies. Existing geospatial standards used in location-aware systems can be applied in building these networks, but they present challenges due to the characters of the geosensor networks. In this paper, we present a study of geospatial standards related to location-aware system platform for improving its interoperability.

  9. Preprocessing techniques for context recognition from accelerometer data

    Microsoft Academic Search

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

    2010-01-01

    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

  10. Enabling Cross-Technology Mobile Applications with Network-Aware References

    Microsoft Academic Search

    Kevin Pinte; Dries Harnie; Theo D’Hondt

    \\u000a Mobile devices, such as smart phones, have become ubiquitous. This evolution has given rise to a vast ecosystem of mobile\\u000a applications. Typically these applications only use a small subset of the networking technologies at their disposal. Building\\u000a applications that use multiple networking technologies simultaneously or exploit knowledge about the available connections\\u000a is a laborious task. Programmers must manually keep track

  11. Online Formative Assessments with Social Network Awareness

    ERIC Educational Resources Information Center

    Lin, Jian-Wei; Lai, Yuan-Cheng

    2013-01-01

    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…

  12. [Anesthesia awareness].

    PubMed

    Luengo J, Víctor; Zapata P, Carola; Delfino, Alejandro; Calderón, Jorge; González Tugas, Matías

    2010-03-01

    Anesthesia awareness, or "unintended intra-operative awareness" occurs during general anesthesia, on the operating table, when a patient has not had enough general anesthetic or analgesic to prevent consciousness or waking up during surgery. According to international studies its global incidence ranges from 0.1 to 0.2%. Its impact on people can be as severe as other traumatic experiences such as natural disasters, violent fights or sexual abuse. The prevalence of symptoms compatible with post traumatic stress disorder can be as high as 50%, after experiencing the awareness phenomenon. This paper reviews the main issues of the awareness phenomenon. PMID:20556341

  13. ASH: Application-aware SWANS with Highway Khaled Ibrahim and Michele C. Weigle

    E-print Network

    Weigle, Michele

    --Most VANET simulators do not allow for feedback between the vehicle mobility model and the network simulator to the scalable SWANS simulator will allow for realistic VANET simulations of important safety and traffic information applications. I. INTRODUCTION The simulation of Vehicular Ad-hoc Network (VANET) applications

  14. Explicit Context Matching in Content-Based Publish/Subscribe Systems

    PubMed Central

    Vavassori, Sergio; Soriano, Javier; Lizcano, David; Jiménez, Miguel

    2013-01-01

    Although context could be exploited to improve performance, elasticity and adaptation in most distributed systems that adopt the publish/subscribe (P/S) communication model, only a few researchers have focused on the area of context-aware matching in P/S systems and have explored its implications in domains with highly dynamic context like wireless sensor networks (WSNs) and IoT-enabled applications. Most adopted P/S models are context agnostic or do not differentiate context from the other application data. In this article, we present a novel context-aware P/S model. SilboPS manages context explicitly, focusing on the minimization of network overhead in domains with recurrent context changes related, for example, to mobile ad hoc networks (MANETs). Our approach represents a solution that helps to efficiently share and use sensor data coming from ubiquitous WSNs across a plethora of applications intent on using these data to build context awareness. Specifically, we empirically demonstrate that decoupling a subscription from the changing context in which it is produced and leveraging contextual scoping in the filtering process notably reduces (un)subscription cost per node, while improving the global performance/throughput of the network of brokers without altering the cost of SIENA-like topology changes. PMID:23529118

  15. Spatially aware expectation maximization (SpAEM): application to prostate TRUS segmentation

    NASA Astrophysics Data System (ADS)

    Orooji, Mahdi; Sparks, Rachel; Bloch, B. Nicolas; Feleppa, Ernest; Barratt, Dean; Madabhushi, Anant

    2014-03-01

    In this paper we introduce Spatially Aware Expectation Maximization (SpAEM), a new parameter estimation method which incorporates information pertaining to spatial prior probability into the traditional expectation- maximization framework. For estimating the parameters of a given class, the spatial prior probability allows us to weight the contribution of any pixel based on the probability of that pixel belonging to the class of interest. In this paper we evaluate SpAEM for the problem of prostate capsule segmentation in transrectal ultrasound (TRUS) images. In cohort of 6 patients, SpAEM qualitatively and quantitatively outperforms traditional EM in distinguishing the foreground (prostate) from background (non-prostate) regions by around 45% in terms of the Sorensen Dice overlap measure, when compared against expert annotations. The variance of the estimated parameters measured via Cramer-Rao Lower Bound suggests that SpAEM yields unbiased estimates. Finally, on a synthetic TRUS image, the Cramer-Von Mises (CVM) criteria shows that SpAEM improves the estimation accuracy by around 51% and 88% for prostate and background, respectively, as compared to traditional EM.

  16. A Web application to improve emotional awareness in high-functioning autistics

    E-print Network

    Sonuyi, Temitope O

    2006-01-01

    The web application built here is based on the idea of presenting scenarios to users, using text, and having the users choose likely emotions that match the scenarios. Taken for granted by most neurotypical people, ...

  17. A widget library for creating policy-aware semantic Web applications

    E-print Network

    Hollenbach, James Dylan

    2010-01-01

    In order to truly reap the benefits of the Semantic Web, there must be adequate tools for writing Web applications that aggregate, view, and edit the widely varying data the Semantic Web makes available. As a step toward ...

  18. QoS-aware resource management for distributed multimedia applications^{1}

    Microsoft Academic Search

    Klara Nahrstedt; Hao-Hua Chu; Srinivas Narayan

    1998-01-01

    The ability of operating system and network infrastructure to provide end-to-end quality of service (QoS) guarantees in multimedia is a major acceptance factor for various distributed multimedia applications due to the temporal audio-visual and sensory information in these applications. Our constraints on the end-to-end guarantees are (1) QoS should be achieved on a general-purpose platform with a real-time extension support,

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

    PubMed

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

    2013-01-01

    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

  20. Efficient Integration of Web Services in Ambient-aware Sensor Network Applications1

    E-print Network

    Koutsoukos, Xenofon D.

    , and security cameras. Emergency response, homeland security, and many other applications have a very real need platforms such as satellite imaging systems, meteorological stations, air quality stations, and security cameras. The ability to seamlessly assemble a sensor web from various sensor network architectures greatly

  1. Providing Practical Applications of Computer Technology for Fifth Grade Students in Career Awareness Laboratories.

    ERIC Educational Resources Information Center

    Pereno, Joan S.

    This practicum addressed the problem of providing practical computer application experiences to fifth grade students as they relate to real life work situations. The primary goal was to have students become cognizant of computer functions within the work setting as contrasted with viewing computer activities as instruments used for games or…

  2. A Framework for Memory-aware Multimedia Application Mapping on Chip-Multiprocessors

    E-print Network

    Pasricha, Sudeep

    technology have motivated the deployment of chip multiprocessor (CMP) architectures. Task scheduling and data placement onto CMP architectures, especially for multimedia applications. At the core of our framework a major role in motivating the need for chip-multiprocessors (CMPs). Olukotun et al. [2] showed that CMP

  3. QEMPAR: QoS and Energy Aware Multi-Path Routing Algorithm for Real-Time Applications in Wireless Sensor Networks

    E-print Network

    Heikalabad, Saeed Rasouli; Nematy, Farhad; Rahmani, Naeim

    2011-01-01

    Enabling real time applications in wireless sensor networks requires certain delay and bandwidth which pose more challenges in the design of routing protocols. The algorithm that is used for packet routing in such applications should be able to establish a tradeoff between end to end delay parameter and energy consumption. In this paper, we propose a new multi path routing algorithm for real time applications in wireless sensor networks namely QEMPAR which is QoS aware and can increase the network lifetime. Simulation results show that the proposed algorithm is more efficient than previous algorithms in providing quality of service requirements of real-time applications.

  4. Design and Optimization of Spatial Organizations For Context Exchange and Surveillance

    E-print Network

    de Veciana, Gustavo

    quantities of con- textual information that is mainly relevant/useful when a user/mobile is situated associated with each cell. The model uses random tessellations to generate spatial partitions of the space of applications' spatial content scaling. I. Introduction Context-awareness refers to the ability of applications

  5. Context Passive gathering of information Experiments Integrated behavioral dvfs method Hydrasim Measuring and Characterizing HPC applications

    E-print Network

    Lefèvre, Laurent

    Context Passive gathering of information Experiments Integrated behavioral dvfs method Hydrasim behavioral dvfs method Hydrasim Plan 1 Context 2 Passive gathering of information 3 Experiments 4 Integrated of information Experiments Integrated behavioral dvfs method Hydrasim Context To optimize a computing center

  6. www.mdpi.com/journal/ijerph Awareness of and Attitudes towards Heat Waves within the Context of Climate Change among a Cohort of Residents in

    E-print Network

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

    2012-01-01

    Abstract: 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 moreInt. J. Environ. Res. Public Health 2013, 10 2 concerned about the impacts of heat waves to the society than on themselves. There was a

  7. Aciom: Application characteristics-aware disk and network I\\/O management on Android platform

    Microsoft Academic Search

    Hyosu Kim; Minsub Lee; Wookhyun Han; Kilho Lee; Insik Shin

    2011-01-01

    The last several years have seen a rapid increase in smart phone use. Android offers an open-source software platform on smart phones, that includes a Linux-based kernel, Java applications, and middleware. The Android middleware provides system libraries and services to facilitate the development of performance-sensitive or device-specific functionalities, such as screen display, multime- dia, and web browsing. Android keeps track

  8. Modeling a Probabilistic Ontology for Maritime Domain Awareness

    E-print Network

    Laskey, Kathryn Blackmond

    Modeling a Probabilistic Ontology for Maritime Domain Awareness Rommel N. Carvalho, Richard ontology for a Maritime Domain Awareness application. The ontology was created to support identification situational awareness, web services, Bayesian networks, MEBN, PR-OWL. I. INTRODUCTION Maritime Domain

  9. Fertility Awareness

    MedlinePLUS

    ... when ovulation happens. Couples use a calendar, a thermometer to measure body temperature, the thickness of cervical ... fertility awareness — such as ovulation detection kits and thermometers, for example — are available in drugstores. But they ...

  10. Case-based situation awareness

    Microsoft Academic Search

    Nuka Nwiabu; Ian Allison; Patrik Holt; Peter Lowit; Babs Oyeneyin

    2012-01-01

    Situation-aware case-based decision support (SACBDS) systems comprise two distinct parts: situation awareness (SA) and case-based reasoning (CBR). The SA part keeps a finite history of the time space information of the domain and uses rules to interpret cues from the environment with respect to an individual user's context, and then anticipates future situations by performing statistical inference over historical data.

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

    PubMed Central

    2013-01-01

    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. PMID:23635078

  12. AHRI: Aware Home Research Initiative

    NSDL National Science Digital Library

    The Aware Home Research Initiative (AHRI) is a project at the Georgia Institute of Technology that seeks to "create a home environment that is aware of its occupants' whereabouts and activities." One of the main focuses of AHRI is the design of specialized technologies to assist older adults or help keep them in closer contact with relatives. This site describes the motivation for the initiative and outlines the goals of intelligent, context-aware systems. A large collection of research papers is presented, highlighting AHRI insights into privacy issues, design challenges, and software engineering for such technology.

  13. Reported child awareness of parental depression

    PubMed Central

    Eyre, Olga; Jones, Rhys Bevan; Mars, Becky; Hammerton, Gemma; Sellers, Ruth; Potter, Robert; Thapar, Ajay; Rice, Frances; Collishaw, Stephan; Thapar, Anita

    2014-01-01

    Aims and method To determine rates of parent-reported child awareness of parental depression, examine characteristics of parents, children and families according to child awareness, and explore whether child awareness is associated with child psychopathology. Data were available from 271 families participating in the Early Prediction of Adolescent Depression (EPAD) study, a longitudinal study of offspring of parents with recurrent depression. Results Seventy-three per cent of participating children were perceived as being aware of their parent’s depression. Older children, and children of parents who experienced more severe depression, were more likely to be aware. Awareness was not associated with child psychopathology. Clinical implications Considering children in the context of parental depression is important. Child awareness may influence their access to early intervention and prevention programmes. Further research is needed to understand the impact of awareness on the child. PMID:25237522

  14. Handling Real-World Context Awareness, Uncertainty and Vagueness in Real-Time Human Activity Tracking and Recognition with a Fuzzy Ontology-Based Hybrid Method

    PubMed Central

    Díaz-Rodríguez, Natalia; Cadahía, Olmo León; Cuéllar, Manuel Pegalajar; Lilius, Johan; Calvo-Flores, Miguel Delgado

    2014-01-01

    Human activity recognition is a key task in ambient intelligence applications to achieve proper ambient assisted living. There has been remarkable progress in this domain, but some challenges still remain to obtain robust methods. Our goal in this work is to provide a system that allows the modeling and recognition of a set of complex activities in real life scenarios involving interaction with the environment. The proposed framework is a hybrid model that comprises two main modules: a low level sub-activity recognizer, based on data-driven methods, and a high-level activity recognizer, implemented with a fuzzy ontology to include the semantic interpretation of actions performed by users. The fuzzy ontology is fed by the sub-activities recognized by the low level data-driven component and provides fuzzy ontological reasoning to recognize both the activities and their influence in the environment with semantics. An additional benefit of the approach is the ability to handle vagueness and uncertainty in the knowledge-based module, which substantially outperforms the treatment of incomplete and/or imprecise data with respect to classic crisp ontologies. We validate these advantages with the public CAD-120 dataset (Cornell Activity Dataset), achieving an accuracy of 90.1% and 91.07% for low-level and high-level activities, respectively. This entails an improvement over fully data-driven or ontology-based approaches. PMID:25268914

  15. Handling real-world context awareness, uncertainty and vagueness in real-time human activity tracking and recognition with a fuzzy ontology-based hybrid method.

    PubMed

    Díaz-Rodríguez, Natalia; Cadahía, Olmo León; Cuéllar, Manuel Pegalajar; Lilius, Johan; Calvo-Flores, Miguel Delgado

    2014-01-01

    Human activity recognition is a key task in ambient intelligence applications to achieve proper ambient assisted living. There has been remarkable progress in this domain, but some challenges still remain to obtain robust methods. Our goal in this work is to provide a system that allows the modeling and recognition of a set of complex activities in real life scenarios involving interaction with the environment. The proposed framework is a hybrid model that comprises two main modules: a low level sub-activity recognizer, based on data-driven methods, and a high-level activity recognizer, implemented with a fuzzy ontology to include the semantic interpretation of actions performed by users. The fuzzy ontology is fed by the sub-activities recognized by the low level data-driven component and provides fuzzy ontological reasoning to recognize both the activities and their influence in the environment with semantics. An additional benefit of the approach is the ability to handle vagueness and uncertainty in the knowledge-based module, which substantially outperforms the treatment of incomplete and/or imprecise data with respect to classic crisp ontologies. We validate these advantages with the public CAD-120 dataset (Cornell Activity Dataset), achieving an accuracy of 90.1% and 91.07% for low-level and Sensors 2014, 14 18132 high-level activities, respectively. This entails an improvement over fully data-driven or ontology-based approaches. PMID:25268914

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

    NASA Astrophysics Data System (ADS)

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

    2003-12-01

    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.

  17. Interconnect Lifetime Prediction with Temporal and Spatial Temperature Gradients for Reliability-Aware Design and Runtime Management: Modeling and Applications

    E-print Network

    Skadron, Kevin

    Interconnect Lifetime Prediction with Temporal and Spatial Temperature Gradients for Reliability temperature gradients, we give close bounds in terms of uniformly distributed temperatures to estimate, temperature gradients, dynamic thermal/reliability man- agement.lectromigration, reliability-aware design

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

    ERIC Educational Resources Information Center

    Winchester, Ian

    2006-01-01

    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…

  19. PSF Rotation with Changing Defocus and Applications to 3D Imaging for Space Situational Awareness

    NASA Astrophysics Data System (ADS)

    Prasad, S.; Kumar, R.

    2013-09-01

    For a clear, well corrected imaging aperture in space, the point-spread function (PSF) in its Gaussian image plane has the conventional, diffraction-limited, tightly focused Airy form. Away from that plane, the PSF broadens rapidly, however, resulting in a loss of sensitivity and transverse resolution that makes such a traditional best-optics approach untenable for rapid 3D image acquisition. One must scan in focus to maintain high sensitivity and resolution as one acquires image data, slice by slice, from a 3D volume with reduced efficiency. In this paper we describe a computational-imaging approach to overcome this limitation, one that uses pupil-phase engineering to fashion a PSF that, although not as tight as the Airy spot, maintains its shape and size while rotating uniformly with changing defocus over many waves of defocus phase at the pupil edge. As one of us has shown recently [1], the subdivision of a circular pupil aperture into M Fresnel zones, with the mth zone having an outer radius proportional to m and impressing a spiral phase profile of form m? on the light wave, where ? is the azimuthal angle coordinate measured from a fixed x axis (the dislocation line), yields a PSF that rotates with defocus while keeping its shape and size. Physically speaking, a nonzero defocus of a point source means a quadratic optical phase in the pupil that, because of the square-root dependence of the zone radius on the zone number, increases on average by the same amount from one zone to the next. This uniformly incrementing phase yields, in effect, a rotation of the dislocation line, and thus a rotated PSF. Since the zone-to-zone phase increment depends linearly on defocus to first order, the PSF rotates uniformly with changing defocus. For an M-zone pupil, a complete rotation of the PSF occurs when the defocus-induced phase at the pupil edge changes by M waves. Our recent simulations of reconstructions from image data for 3D image scenes comprised of point sources at different focal depths have shown remarkable robustness of our rotating-PSF approach to achieve good transverse and longitudinal resolution even for moderate SNR. Additionally, the work seeks to clarify an important theoretical issue about 3D imaging, namely the detailed nature of the interplay between transverse and longitudinal resolutions, including 3D generalizations of the space-bandwidth product (SBP) and its dependence on image noise. An underlying transport equation, which we shall derive and analyze, describes the trade-off between the transverse and longitudinal blur processes in a manner analogous to the diffractive spreading of a light beam that is transversely confined. This work has immediate applications for space-based surveillance, particularly for 3D mapping and tracking of space debris flying in the vicinity of important AF space assets. Working with a well corrected conventional imager, our 3D computational imager can acquire with high sensitivity and speed an extended focal volume in which individual objects of interest can be subsequently probed and imaged with high resolution over smaller 2D field segments. [1] S. Prasad, Rotating Point Spread Function by Pupil Phase Engineering, Opt. Lett., vol. 38, pp. 585-587 (2013)

  20. A Formal Definition of Situation towards Situation-Aware Computing

    Microsoft Academic Search

    Minsoo Kim; Minkoo Kim

    2009-01-01

    Context-aware computing has emerged as a promising way to build intelligent and dynamic systems in overall computer science\\u000a areas such as ubiquitous computing, multi-agent systems, and web services. For constructing the knowledgebase in such systems,\\u000a various context modeling and reasoning techniques were introduced. Recently the concept of situation-awareness is focused\\u000a beyond the context-awareness. In fact, the concept of situation is

  1. Wildfire Awareness.

    ERIC Educational Resources Information Center

    Wallace, Glenda

    2002-01-01

    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)

  2. Agents for distributed context-aware interaction

    Microsoft Academic Search

    Augusto Celentano; Daniela Fogli; Piero Mussio; Fabio Pittarello

    This paper addresses post-wimp HCI system design by introducing the concept of Interaction Locus (IL), as a coordination of three-dimensional representation, auditory signs and hypermedia information, which informs the user about the specific nature of the part of the environment that he\\/she's currently entered. The interaction between a user and the IL is observed and mediated by two agents that,

  3. Context-Aware Mobile Information Access

    E-print Network

    Rajamani, Sriram K.

    devices a natural conduit for Location-based Services (LBS) · Lots of buzz and hype around LBS 1. Many ­ Predicting destinations for targeted LBS #12;Why Relative Location? · Why not just GPS? ­ not all phones have it ­ coverage (indoors, urban canyons, inside a bus) ­ time to lock (~26 secs even with warm start) ­ energy

  4. Context-Aware Usage Control for Android

    Microsoft Academic Search

    Guangdong Bai; Liang Gu; Tao Feng; Yao Guo; Xiangqun Chen

    2010-01-01

    \\u000a The security of smart phones is increasingly important due to their rapid popularity. Mobile computing on smart phones introduces\\u000a many new characteristics such as personalization, mobility, pay-for-service and limited resources. These features require\\u000a additional privacy protection and resource usage constraints in addition to the security and privacy concerns on traditional\\u000a computers. As one of the leading open source mobile platform,

  5. Situation awareness in emergency medical dispatch

    Microsoft Academic Search

    Ann Blandford; B. L. William Wong

    2004-01-01

    Situation Awareness, and how systems can be designed to support it appropriately, have been a focus of study in dynamic, safety critical contexts such as aviation. The work reported here extends the study of situation awareness into the domain of Emergency Medical Dispatch (EMD). The study was conducted in one of the largest ambulance services in the world. In this

  6. A comparison of near surface CO2 monitoring methods and their applicability in the CCS context

    NASA Astrophysics Data System (ADS)

    Möller, Ingo; Schlömer, Stefan

    2014-05-01

    The detection, characterization and quantification of different gas species in the vicinity of the soil-atmosphere interface is considered as one key element of near surface monitoring related to CO2 storage operations. From a broad range of available techniques (see e.g. Korre et al. 2011 and Rütters et al. 2013), three different methods have initially been selected in order to compare their applicability in the CCS context: - The eddy covariance method which can compute CO2 fluxes within the atmospheric boundary layer, - CO2 flux measurements between soil and atmosphere by means of accumulation chambers, - Permanent CO2 concentration measurements in the vadose zone of the soil column. Additionally, basic atmospheric CO2 concentration measurements were also included in this comparison since they might have a potential as monitoring alternative on a low-cost basis. Results and lessons learned from practical field experiments were elaborated to point out advantages and disadvantages of the individual methods as well as their integration into an overall monitoring concept of CO2 storage sites. Field work has been carried out in different locations of Northern Germany, amongst others in the Altmark region, a formerly proposed CO2 injection site for enhanced gas recovery (Schlömer et al. 2014). This study benefits from interim results of the MONACO project (Monitoring approach for geological CO2 storage sites using an hierarchic observation concept) which is funded by the German Federal Ministry of Education and Research (BMBF, grant 03G0817A). References: Korre, A., Imrie, C.E., May, F., Beaubien, S.E., Vandermeijer, V., Persoglia, S., Golmen, L., Fabriol, H., Dixon, T., 2011. Quantification techniques for potential CO2 leakage from geological storage sites. Energy Proc. 4, pp. 3413-3420. Rütters, H., Möller, I., May, F., Flornes, K., Hladik, V., Arvanitis, A., Gülec, N.,Bakiler, C., Dudu, A., Kucharic, L., Juhojuntti, N., Shogenova, A., Georgiev, G., 2013. State-of-the-art of monitoring methods to evaluate storage site performance. CGS Europe Report D3.3. 109 pp. http://repository.cgseurope.net/eng/cgseurope/knowledge-repository/key-reports/Monitoring.aspx Schlömer, S., Möller, I., Furche, M., 2014. Baseline soil gas measurements as part of a monitoring concept above a projected CO2 injection formation - A case study from Northern Germany. Int. J. Greenhouse Gas Control, Vol. 20, p. 57-72. http://dx.doi.org/10.1016/j.ijggc.2013.10.028.

  7. The OGC Publish/Subscribe specification in the context of sensor-based applications

    NASA Astrophysics Data System (ADS)

    Bigagli, Lorenzo

    2014-05-01

    The Open Geospatial Consortium Publish/Subscribe Standards Working Group (in short, OGC PubSub SWG) was chartered in 2010 to specify a mechanism to support publish/subscribe requirements across OGC service interfaces and data types (coverage, feature, etc.) The Publish/Subscribe Interface Standard 1.0 - Core (13-131) defines an abstract description of the basic mandatory functionality, along with several optional, extended capabilities. The Core is independent of the underlying binding, for which two extensions are currently considered in the PubSub SWG scope: a SOAP binding and RESTful binding. Two primary parties characterize the publish/subscribe model: a Publisher, which is publishing information, and a Subscriber, which expresses an interest in all or part of the published information. In many cases, the Subscriber and the entity to which data is to be delivered (the Receiver) are one and the same. However, they are distinguished in PubSub to allow for these roles to be segregated. This is useful, for example, in event-based systems, where system entities primarily react to incoming information and may emit new information to other interested entities. The Publish/Subscribe model is distinguished from the typical request/response model, where a client makes a request and the server responds with either the requested information or a failure. This provides relatively immediate feedback, but can be insufficient in cases where the client is waiting for a specific event (such as data arrival, server changes, or data updates). In fact, while waiting for an event, a client must repeatedly request the desired information (polling). This has undesirable side effects: if a client polls frequently this can increase server load and network traffic, and if a client polls infrequently it may not receive a message when it is needed. These issues are accentuated when event occurrences are unpredictable, or when the delay between event occurrence and client notification must be small. Instead, the Publish/Subscribe model is characterized by the ability for a Subscriber to specify an ongoing (persistent) expression of interest in some messages, and by the asynchronous delivery of such messages. Hence, the publish/subscribe model can be useful to reduce the latency between event occurrence and event notification, as it is the Publisher's responsibility to publish a message when the event occurs, rather than relying on clients to anticipate the occurrence. The following cross-service requirements have been identified for PubSub 1.0: • Provide notification capabilities as a module to existing OGC services with no impact on existing service semantics and by reusing service-specific filtering semantics. • Usable as a way to push actual data (not only references to data) from a data access service (i.e. WCS, WFS, SOS) to the client. • Usable as a way to push notification messages (i.e. lightweight, no data but rather references to data) to the client. • Usable as a way to provide notifications of service and dataset updates in order to simplify/optimize harvesting by catalogs. The use-cases identified for PubSub 1.0 include: • Service Filtered Data Push. • Service Filtered Notification. • Notification of Threshold Crossings. • FAA SAA Dissemination Pilot. • Emergency / Safety Critical Application. The above suggests that the OGC Publish/Subscribe specification could be successfully applied to sensor-based monitoring. This work elaborates on this technology and its possible applications in this context.

  8. 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.

  9. 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.

  10. Avalanche Awareness

    NSDL National Science Digital Library

    Laura Cheshire

    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.

  11. Context in selection of men and women in hiring decisions: gender composition of the applicant pool.

    PubMed

    van Ommeren, Jos; de Vries, Reinout E; Russo, Giovanni; van Ommeren, Mark

    2005-04-01

    The hypothesis that the sex composition of an applicant pool affects the hiring probabilities of individual job applicants was tested using gender-distinctive information on accepted and rejected job applicants in The Netherlands. The evidence supports this hypothesis, although the effect sizes are moderate. Both men and women have a lower probability of being hired when the applicant pool contains fewer applicants from their own sex. PMID:15941109

  12. Consistency of stochastic context-free grammars and application to stochastic parsing of GMTI tracker data

    NASA Astrophysics Data System (ADS)

    Balaji, Bhashyam

    2012-06-01

    Conventional trackers provide the human operator with estimated target tracks. It is desirable to make higher level inference of the target behaviour/intent (e.g., trajectory inference) in an automated manner. One such approach is to use stochastic context-free grammars and the Earley-Stoelcke parsing algorithm. The problem of inference is reformulated as one of parsing. In this paper, the consistency of stochastic context-free grammars is reviewed. Some examples illustrating the constraints on SCFGs due to consistency are presented, including a toy SCFG that has been used to successfully parse real GMTI radar data.

  13. BeTelGeuse: Tool for Context Data Gathering via Bluetooth

    Microsoft Academic Search

    Patrik Floreen; Joonas Kukkonen; Eemil Lagerspetz; Petteri Nurmi; Jukka Suomela

    Activity related information is often seen as a good indicator for human be-haviour, see e. g. [1-5] and, as a consequence, context-aware applications and services need access to activity related context data. In mobile and wearable computing, the dominant approach has been to build customized sensor boards (e. g. Mu n [6]) and armbands or other fabrics (e. g. The

  14. Multimedia Tools for Internet Commerce Applications: Usability in a Small Business Context

    Microsoft Academic Search

    Daniel P. Toohey; John G. Gammack; Simpson Poon

    Earlier studies on Small Business Internet Commerce (SBIC) indicate that small businesses are using the Internet for various business activities. However, few so far have been focused on the use of multimedia tools to support context-rich, highly interactive business activities (eg., online product inspection and negotiation). This paper reports the findings of a preliminary study relevant to the usability of

  15. Functional Grammar in the Context of Linguistic Applications in Turkish Language Teaching

    ERIC Educational Resources Information Center

    Epcacan, Cahit

    2013-01-01

    In the last century, language researches adopted the scientific method and linguistics became an autonomous discipline. Linguistics is a framework concept that analyzes all languages in the world in various contexts according to its own rules and draws conclusions using the systematic approach. Functional linguistics is a linguistic trend that…

  16. The Importance of Context in Development and Application of Ecosystem Services Production Functions

    EPA Science Inventory

    The task of estimating ecosystem service production and delivery deserves special attention. When approached as a function of land cover at any given time, context driven facets of ecosystem service production, delivery, and resulting effects on human well-being can be overlooke...

  17. Exploring the Social Context of Instrumental and Expressive Homicides: An Application of Qualitative Comparative Analysis

    Microsoft Academic Search

    Terance D. Miethe; Kriss A. Drass

    1999-01-01

    Using data from the UCR's Supplementary Homicide Reports, the methodof qualitative comparative analysis (QCA) is used to examine whetherinstrumental and expressive homicides are similar or unique in their socialcontext (i.e., combinations of offender, victim, and situationalcharacteristics). Instrumental and expressive homicides are found to haveboth common and unique social contexts, but the vast majority of homicideincidents involve combinations of individual and

  18. A smart web service based on the context of things

    Microsoft Academic Search

    Jing He; Yanchun Zhang; Guangyan Huang; Jinli Cao

    2012-01-01

    Combining the Semantic Web and the Ubiquitous Web, Web 3.0 is for things. The Semantic Web enables human knowledge to be machine-readable and the Ubiquitous Web allows Web services to serve any thing, forming a bridge between the virtual world and the real world. By using context, Web services can become smarter—that is, aware of the target things' or applications'

  19. The Software EBox: Integrated Information for Situational Awareness

    E-print Network

    Venkatasubramanian, Nalini

    The Software EBox: Integrated Information for Situational Awareness Naveen Ashish, Jay Lickfett to providing situational awareness during emergency response situations. The EBox exemplifies a novel that is a software solution for information integration in the context of situational awareness systems for emergency

  20. SAFETY ENHANCEMENT THROUGH SITUATION-AWARE USER INTERFACES

    E-print Network

    SAFETY ENHANCEMENT THROUGH SITUATION-AWARE USER INTERFACES V. De Florio, C. Blondia PATS research.deflorio@ua.ac.be Keywords: Adaptive user interfaces, safety, human errors, situation awareness, human-computer interaction-of- concepts implementation of user interfaces combining dynamic profiling with context- and situation-awareness

  1. Soil Moisture Data Assimilation in the NASA Land Information System for Local Modeling Applications and Improved Situational Awareness

    NASA Technical Reports Server (NTRS)

    Case, Jonathan L.; Blakenship, Clay B.; Zavodsky, Bradley T.

    2014-01-01

    As part of the NASA Soil Moisture Active Passive (SMAP) Early Adopter (EA) program, the NASA Shortterm Prediction Research and Transition (SPoRT) Center has implemented a data assimilation (DA) routine into the NASA Land Information System (LIS) for soil moisture retrievals from the European Space Agency's Soil Moisture Ocean Salinity (SMOS) satellite. The SMAP EA program promotes application-driven research to provide a fundamental understanding of how SMAP data products will be used to improve decision-making at operational agencies. SPoRT has partnered with select NOAA/NWS Weather Forecast Offices (WFOs) that use output from a real-time regional configuration of LIS, without soil moisture DA, to initialize local numerical weather prediction (NWP) models and enhance situational awareness. Improvements to local NWP with the current LIS have been demonstrated; however, a better representation of the land surface through assimilation of SMOS (and eventually SMAP) retrievals is expected to lead to further model improvement, particularly during warm-season months. SPoRT will collaborate with select WFOs to assess the impact of soil moisture DA on operational forecast situations. Assimilation of the legacy SMOS instrument data provides an opportunity to develop expertise in preparation for using SMAP data products shortly after the scheduled launch on 5 November 2014. SMOS contains a passive L-band radiometer that is used to retrieve surface soil moisture at 35-km resolution with an accuracy of 0.04 cu cm cm (exp -3). SMAP will feature a comparable passive L-band instrument in conjunction with a 3-km resolution active radar component of slightly degraded accuracy. A combined radar-radiometer product will offer unprecedented global coverage of soil moisture at high spatial resolution (9 km) for hydrometeorological applications, balancing the resolution and accuracy of the active and passive instruments, respectively. The LIS software framework manages land surface model (LSM) simulations and includes an Ensemble Kalman Filter for conducting land surface DA. SPoRT has added a module to read, quality-control and bias-correct swaths of Level II SMOS soil moisture retrievals prior to assimilation within LIS. The impact of SMOS DA is being tested using the Noah LSM. Experiments are being conducted to examine the impacts of SMOS soil moisture DA on the resulting LISNoah fields and subsequent NWP simulations using the Weather Research and Forecasting (WRF) model initialized with LIS-Noah output. LIS-Noah soil moisture will be validated against in situ observations from Texas A&M's North American Soil Moisture Database to reveal the impact and possible improvement in soil moisture trends through DA. WRF model NWP case studies will test the impacts of DA on the simulated near-surface and boundary-layer environments, and precipitation during both quiescent and disturbed weather scenarios. Emphasis will be placed on cases with large analysis increments, especially due to contributions from regional irrigation patterns that are not represented by precipitation input in the baseline LIS-Noah run. This poster presentation will describe the soil moisture DA methodology and highlight LIS-Noah and WRF simulation results with and without assimilation.

  2. Awareness campaign.

    PubMed

    2007-01-01

    LifeBridge Health developed and implemented an awareness campaign to generate buzz about the breast cancer services at the Alvin & Lois Lapidus Cancer Institute of LifeBridge Health and the Herman & Walter Samuelson Breast Cancer Care Center at Northwest Hospital Center. With the help of talented local breast cancer survivors, celebrities, fashion designers, and artists, LifeBridge Health created a campaign, including an interactive Web site, public relations outreach, and a unique event in October 2006 that featured a collection of hand-made decorated bras. PMID:17450952

  3. Machine Learning Methods for High Level Cyber Situation Awareness

    Microsoft Academic Search

    Thomas G. Dietterich; Xinlong Bao; Victoria Keiser; Jianqiang Shen

    2010-01-01

    Cyber situation awareness needs to operate at many levels of abstraction. In this chapter, we discuss situation awareness\\u000a at a very high level—the behavior of desktop computer users. Our goal is to develop an awareness of what desktop users are\\u000a doing as they work. Such awareness has many potential applications including

  4. Machine Learning Methods for High Level Cyber Situation Awareness

    NASA Astrophysics Data System (ADS)

    Dietterich, Thomas G.; Bao, Xinlong; Keiser, Victoria; Shen, Jianqiang

    Cyber situation awareness needs to operate at many levels of abstraction. In this chapter, we discuss situation awareness at a very high level—the behavior of desktop computer users. Our goal is to develop an awareness of what desktop users are doing as they work. Such awareness has many potential applications including

  5. Comprehensive Context Recognizer Based on Multimodal Sensors in a Smartphone

    PubMed Central

    Han, Manhyung; Vinh, La The; Lee, Young-Koo; Lee, Sungyoung

    2012-01-01

    Recent developments in smartphones have increased the processing capabilities and equipped these devices with a number of built-in multimodal sensors, including accelerometers, gyroscopes, GPS interfaces, Wi-Fi access, and proximity sensors. Despite the fact that numerous studies have investigated the development of user-context aware applications using smartphones, these applications are currently only able to recognize simple contexts using a single type of sensor. Therefore, in this work, we introduce a comprehensive approach for context aware applications that utilizes the multimodal sensors in smartphones. The proposed system is not only able to recognize different kinds of contexts with high accuracy, but it is also able to optimize the power consumption since power-hungry sensors can be activated or deactivated at appropriate times. Additionally, the system is able to recognize activities wherever the smartphone is on a human's body, even when the user is using the phone to make a phone call, manipulate applications, play games, or listen to music. Furthermore, we also present a novel feature selection algorithm for the accelerometer classification module. The proposed feature selection algorithm helps select good features and eliminates bad features, thereby improving the overall accuracy of the accelerometer classifier. Experimental results show that the proposed system can classify eight activities with an accuracy of 92.43%.

  6. Unmanned Vehicle Situation Awareness

    Microsoft Academic Search

    Julie A. Adams

    This paper presents the concept of unmanned vehicle situation awareness and provides a discussion of how unmanned vehicle situation awareness can be defined based upon human situation awareness. A broadly accepted human situation awareness definition is directly applied to the notion of unmanned vehicle situation awareness. The paper also discusses unique unmanned vehicle aspects that will influence unmanned vehicle situation

  7. Alginate drug delivery systems: application in context of pharmaceutical and biomedical research.

    PubMed

    Jain, Dharmendra; Bar-Shalom, Daniel

    2014-12-01

    Alginates are natural polymers widely used in the food industry because of their biocompatible, biodegradable character, nontoxicity and easy availability. The bioadhesive character of alginates makes them useful in the pharmaceutical industry as well. The application areas of sodium alginate-based drug delivery systems are many and these systems can be formulated as gels, matrices, membranes, nanospheres, microspheres, etc. Worldwide researchers are exploring possible applications of alginates as coating material, preparation of controlled-release drug delivery systems such as microspheres, beads, pellets, gels, fibers, membranes, etc. In the present review, such applications of alginates are discussed. PMID:25109399

  8. Science in the Context of Application: Methodological Change, Conceptual Transformation, Cultural Reorientation

    Microsoft Academic Search

    Martin Carrier; Alfred Nordmann

    \\u000a The heavy application pressure under which science operates, its increased dependency on technical apparatus for experimentation,\\u000a visualization, and modelling, and its technological ambitions to manage the complexities of highly developed societies have\\u000a prompted claims to the effect that science as such has undergone a profound methodological and institutional transformation\\u000a during the past decades. Application-oriented research is not the same as

  9. Situation Awareness and Levels of Automation

    NASA Technical Reports Server (NTRS)

    Kaber, David B.

    1999-01-01

    During the first year of this project, a taxonomy of theoretical levels of automation (LOAs) was applied to the advanced commercial aircraft by categorizing actual modes of McDonald Douglas MD-11 autoflight system operation in terms of the taxonomy. As well, high LOAs included in the taxonomy (e.g., supervisory control) were modeled in the context of MD-11 autoflight systems through development of a virtual flight simulator. The flight simulator was an integration of a re-configurable simulator developed by the Georgia Institute Technology and new software prototypes of autoflight system modules found in the MD-11 cockpit. In addition to this work, a version of the Situation Awareness Global Assessment Technique (SAGAT) was developed for application to commercial piloting tasks. A software package was developed to deliver the SAGAT and was integrated with the virtual flight simulator.

  10. Advanced Weather Awareness and Reporting Enhancements

    NASA Technical Reports Server (NTRS)

    Busquets, Anthony M. (Technical Monitor); Ruokangas, Corinne Clinton; Kelly, Wallace E., III

    2005-01-01

    AWARE (Aviation Weather Awareness and Reporting Enhancements) was a NASA Cooperative Research and Development program conducted jointly by Rockwell Scientific, Rockwell Collins, and NASA. The effort culminated in an enhanced weather briefing and reporting tool prototype designed to integrate graphical and text-based aviation weather data to provide clear situational awareness in the context of a specific pilot, flight and equipment profile. The initial implementation of AWARE was as a web-based preflight planning tool, specifically for general aviation pilots, who do not have access to support such as the dispatchers available for commercial airlines. Initial usability tests showed that for VFR (Visual Flight Rules) pilots, AWARE provided faster and more effective weather evaluation. In a subsequent formal usability test for IFR (Instrument Flight Rules) pilots, all users finished the AWARE tests faster than the parallel DUAT tests, and all subjects graded AWARE higher for effectiveness, efficiency, and usability. The decision analysis basis of AWARE differentiates it from other aviation safety programs, providing analysis of context-sensitive data in a personalized graphical format to aid pilots/dispatchers in their complex flight requirements.

  11. Situation Awareness Umakishore Ramachandran

    E-print Network

    Ramachandran, Umakishore

    Situation Awareness Umakishore Ramachandran College of Computing Georgia Institute of Technology 1 leading to situation awareness. There are three communities -- sensor networks, pervasive computing, and high performance computing ­ that carry out research that are relevant to achieving situation awareness

  12. Discovery Service for User Models in a Multi-Application Context

    Microsoft Academic Search

    Vadim I. Chepegin; Lora Aroyo; Paul De Bra

    2005-01-01

    In order to efficiently manage information on the Web it becomes crucial to provide personalization not only within single systems, but across various web applications. Interoperability of user models, on both syntactic and semantic level, emerges as a vital issue in order to achieve seamless personalization across different user-adaptive systems. In this paper we discuss the architecture of a Broker-based

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

    ERIC Educational Resources Information Center

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

    2009-01-01

    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.…

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

    Microsoft Academic Search

    Alicia Ranee Allbaugh

    2003-01-01

    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

  15. Real time tracking of high speed movements in the context of a table tennis application

    Microsoft Academic Search

    Stephan Rusdorf; Guido Brunnett

    2005-01-01

    In this paper we summarize the experiences we made with the implementation of a table tennis application. After describing the hardware necessities of our system we give insight into different aspects of the simulation. These include collision detection, physical simulation and some aspects of the design of the virtual opponent.Since table tennis is one of the fastest sports the synchronization

  16. A Situation-aware Support Model and Its Implementation

    Microsoft Academic Search

    Zixue Cheng; Tongjun Huang

    2006-01-01

    Ubiquitous computing becomes a popular research field, with the progress of sensor networks, automatic identification techniques etc. One of the hottest topics in ubiquitous computing is context-aware service, provided based on users' context, e.g. location and interests. Though many researches have been done in users' context-aware based services, it still a hard challenge to identify the situation of users in

  17. Business Processes Contextualisation via Context Analysis

    E-print Network

    Business Processes Contextualisation via Context Analysis Jose Luis de la Vara1 , Raian Ali2.giorgini}@disi.unitn.it Abstract. Context-awareness has emerged as a new perspective for business process modelling. Even though for approaches that (i) facilitate the identification of the context properties that influence a business process

  18. Biological Time Series Analysis Using a Context Free Language: Applicability to Pulsatile Hormone Data

    PubMed Central

    Dean, Dennis A.; Adler, Gail K.; Nguyen, David P.; Klerman, Elizabeth B.

    2014-01-01

    We present a novel approach for analyzing biological time-series data using a context-free language (CFL) representation that allows the extraction and quantification of important features from the time-series. This representation results in Hierarchically AdaPtive (HAP) analysis, a suite of multiple complementary techniques that enable rapid analysis of data and does not require the user to set parameters. HAP analysis generates hierarchically organized parameter distributions that allow multi-scale components of the time-series to be quantified and includes a data analysis pipeline that applies recursive analyses to generate hierarchically organized results that extend traditional outcome measures such as pharmacokinetics and inter-pulse interval. Pulsicons, a novel text-based time-series representation also derived from the CFL approach, are introduced as an objective qualitative comparison nomenclature. We apply HAP to the analysis of 24 hours of frequently sampled pulsatile cortisol hormone data, which has known analysis challenges, from 14 healthy women. HAP analysis generated results in seconds and produced dozens of figures for each participant. The results quantify the observed qualitative features of cortisol data as a series of pulse clusters, each consisting of one or more embedded pulses, and identify two ultradian phenotypes in this dataset. HAP analysis is designed to be robust to individual differences and to missing data and may be applied to other pulsatile hormones. Future work can extend HAP analysis to other time-series data types, including oscillatory and other periodic physiological signals. PMID:25184442

  19. Is the European shipping industry aware of corporate social responsibility? The case of the Greek-owned short sea shipping companies

    Microsoft Academic Search

    Irene Fafaliou; Maria Lekakou; Ioannis Theotokas

    2006-01-01

    This paper attempts to clarify the meaning of corporate social responsibility (CSR) in the context of the European maritime sector and examines its application in the case of the Greek-owned short sea shipping companies. CSR is assessed in terms of a number of variables such as employees’ satisfaction, corporate productivity and efficiency, social welfare, awareness and social accountability of managers

  20. Moodle 2.0 Web Services Layer and Its New Application Contexts

    NASA Astrophysics Data System (ADS)

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

    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.

  1. Seven scenarios for context-aware systems Seven Scenarios for Context-aware Systems

    E-print Network

    Freytag, Johann-Christoph

    and the integrated iris scanner detects if he is an authorized user. Ray bought this system for himself, so he registering them. During the warming-up phase he changes between short sprints and slower runs to get his body scanner and additional brainwave scanners in the temples. The promotion promises that it works fine

  2. Real time emotion aware applications: a case study employing emotion evocative pictures and neuro-physiological sensing enhanced by Graphic Processor Units.

    PubMed

    Konstantinidis, Evdokimos I; Frantzidis, Christos A; Pappas, Costas; Bamidis, Panagiotis D

    2012-07-01

    In this paper the feasibility of adopting Graphic Processor Units towards real-time emotion aware computing is investigated for boosting the time consuming computations employed in such applications. The proposed methodology was employed in analysis of encephalographic and electrodermal data gathered when participants passively viewed emotional evocative stimuli. The GPU effectiveness when processing electroencephalographic and electrodermal recordings is demonstrated by comparing the execution time of chaos/complexity analysis through nonlinear dynamics (multi-channel correlation dimension/D2) and signal processing algorithms (computation of skin conductance level/SCL) into various popular programming environments. Apart from the beneficial role of parallel programming, the adoption of special design techniques regarding memory management may further enhance the time minimization which approximates a factor of 30 in comparison with ANSI C language (single-core sequential execution). Therefore, the use of GPU parallel capabilities offers a reliable and robust solution for real-time sensing the user's affective state. PMID:22520825

  3. Perceptually optimal compression for heterogeneous image content in the context of medical networked applications

    NASA Astrophysics Data System (ADS)

    Braeckman, Geert; Marchessoux, Cédric; Besnehard, Quentin; Barbarien, Joeri; Schelkens, Peter

    2010-01-01

    In medical networked applications, the server-generated application view, consisting of medical image content and synthetic text/GUI elements, must be compressed and transmitted to the client. To adapt to the local content characteristics, the application view is divided into rectangular patches, which are classified into content classes: medical image patches, synthetic image patches consisting of text on a uniform/natural/medical image background and synthetic image patches consisting of GUI elements on a uniform/natural/medical image background. Each patch is thereafter compressed using a technique yielding perceptually optimal performance for the identified content class. The goal of this paper is to identify this optimal technique, given a set of candidate schemes. For this purpose, a simulation framework is used which simulates different types of compression and measures the perceived differences between the compressed and original images, taking into account the display characteristics. In a first experiment, JPEG is used to code all patches and the optimal chroma subsampling and quantization parameters are derived for different content classes. The results show that 4:4:4 chroma subsampling is the best choice, regardless of the content type. Furthermore, frequency dependant quantization yields better compression performance than uniform quantization, except for content containing a significant number of very sharp edges. In a second experiment, each patch can be coded using JPEG, JPEG XR or JPEG 2000. On average, JPEG 2000 outperforms JPEG and JPEG XR for most medical images and for patches containing text. However, for histopathology or tissue patches and for patches containing GUI elements, classical JPEG compression outperforms the other two techniques.

  4. Knowledge-based public health situation awareness

    NASA Astrophysics Data System (ADS)

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

    2004-09-01

    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.

  5. Expansion of the Real-time Sport-land Information System for NOAA / National Weather Service Situational Awareness and Local Modeling Applications

    NASA Technical Reports Server (NTRS)

    Case, Jonathan L.; White, Kristopher D.

    2014-01-01

    The NASA Short-term Prediction Research and Transition (SPoRT) Center in Huntsville, AL (Jedlovec 2013; Ralph et al. 2013; Merceret et al. 2013) is running a real-time configuration of the Noah land surface model (LSM) within the NASA Land Information System (LIS) framework (hereafter referred to as the "SPoRT-LIS"). Output from the real-time SPoRT-LIS is used for (1) initializing land surface variables for local modeling applications, and (2) displaying in decision support systems for situational awareness and drought monitoring at select NOAA/National Weather Service (NWS) partner offices. The SPoRT-LIS is currently run over a domain covering the southeastern half of the Continental United States (CONUS), with an additional experimental real-time run over the entire CONUS and surrounding portions of southern Canada and northern Mexico. The experimental CONUS run incorporates hourly quantitative precipitation estimation (QPE) from the National Severe Storms Laboratory Multi- Radar Multi-Sensor (MRMS) product (Zhang et al. 2011, 2014), which will be transitioned into operations at the National Centers for Environmental Prediction (NCEP) in Fall 2014. This paper describes the current and experimental SPoRT-LIS configurations, and documents some of the limitations still remaining through the advent of MRMS precipitation analyses in the SPoRT-LIS land surface model (LSM) simulations. Section 2 gives background information on the NASA LIS and describes the realtime SPoRT-LIS configurations being compared. Section 3 presents recent work done to develop a training module on situational awareness applications of real-time SPoRT-LIS output. Comparisons between output from the two SPoRT-LIS runs are shown in Section 4, including a documentation of issues encountered in using the MRMS precipitation dataset. A summary and future work in given in Section 5, followed by acknowledgements and references.

  6. Application of carbon dioxide (CO{sub 2}) for controlling subsurface fire area: Indian context

    SciTech Connect

    Mohalik, N.K.; Singh, V.K.; Singh, R.V.K. [Central Institute of Mining & Fuel Research, Dhanbad (India)

    2009-07-15

    In bord and pillar method of mining, the panels are sealed off after depillaring. Depending upon the site specific condition, 40 to 45 % coal are left in depillared panel as stook, loose coal left in goaf, hard coal on floor and roof of the panel. The left out coals in goaf area start oxidation, and this leads to spontaneous heating in side sealed off area. For assessment of fire in underground coal mines, thermo-compositional monitoring plays an important role. This paper presents scientific relevance and selective criteria for use of inert gas for control of subsurface fire. Finally the paper discusses spontaneous heating problem in sealed off area and application of inertisation technology by using CO, to prevent and control sealed off fire at Haripur Colliery, Kenda Area, ECL, India.

  7. Is the NHS best practice tariff for type 1 diabetes applicable in the Irish context?

    PubMed

    O'Brien, N; McGlacken-Byrne, S M; Hawkes, C P; Murphy, N

    2014-01-01

    The National Health Service in the UK has identified thirteen key standards of paediatric diabetes care. Funding depends on services meeting these standards. The aim of this study was to determine if these standards are applicable in an Irish setting. All patients attending the diabetes service during 2012 were included. Patient charts, electronic appointments, nursing notes and computerised results were used to ascertain relevant information for comparison with the NHS standards. Patients attended a mean 2.97 (SD 0.7) medical and 2.2 (SD 2.9) nursing appointments per year, with a median additional contacts of 8 nurse phone calls (range 0 - 125). Most standards were met by this service. In comparing our service to the NHS standard, we have identified a number of areas for improving our service provision. Limited resources and staff shortages make a number of these standards unachievable, namely annual dietetic review and three monthly outpatient appointments. PMID:25226714

  8. Language Awareness as a Challenge for Business

    ERIC Educational Resources Information Center

    Hunerberg, Reinhard; Geile, Andrea

    2012-01-01

    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…

  9. Application of Physiological Self-Regulation and Adaptive Task Allocation Techniques for Controlling Operator Hazardous States of Awareness

    NASA Technical Reports Server (NTRS)

    Prinzel, Lawrence J., III; Pope, Alan T.; Freeman, Frederick G.

    2001-01-01

    Prinzel, Hadley, Freeman, and Mikulka found that adaptive task allocation significantly enhanced performance only when used at the endpoints of the task workload continuum (i.e., very low or high workload), but that the technique degraded performance if invoked during other levels of task demand. These researchers suggested that other techniques should be used in conjunction with adaptive automation to help minimize the onset of hazardous states of awareness (HSA) and keep the operator 'in-the-loop.' The paper reports on such a technique that uses psychophysiological self-regulation to modulate the level of task engagement. Eighteen participants were assigned to three groups (self-regulation, false feedback, and control) and performed a compensatory tracking task that was cycled between three levels of task difficulty on the basis of the electroencephalogram (EEG) record. Those participants who had received self-regulation training performed significantly better and reported lower NASA-TLX scores than participants in the false feedback and control groups. Furthermore, the false feedback and control groups had significantly more task allocations resulting in return-to-manual performance decrements and higher EEG difference scores. Theoretical and practical implications of these results for adaptive automation are discussed.

  10. Context-Based Urban Terrain Reconstruction from Uav-Videos for Geoinformation Applications

    NASA Astrophysics Data System (ADS)

    Bulatov, D.; Solbrig, P.; Gross, H.; Wernerus, P.; Repasi, E.; Heipke, C.

    2011-09-01

    Urban terrain reconstruction has many applications in areas of civil engineering, urban planning, surveillance and defense research. Therefore the needs of covering ad-hoc demand and performing a close-range urban terrain reconstruction with miniaturized and relatively inexpensive sensor platforms are constantly growing. Using (miniaturized) unmanned aerial vehicles, (M)UAVs, represents one of the most attractive alternatives to conventional large-scale aerial imagery. We cover in this paper a four-step procedure of obtaining georeferenced 3D urban models from video sequences. The four steps of the procedure - orientation, dense reconstruction, urban terrain modeling and geo-referencing - are robust, straight-forward, and nearly fully-automatic. The two last steps - namely, urban terrain modeling from almost-nadir videos and co-registration of models 6ndash; represent the main contribution of this work and will therefore be covered with more detail. The essential substeps of the third step include digital terrain model (DTM) extraction, segregation of buildings from vegetation, as well as instantiation of building and tree models. The last step is subdivided into quasi- intrasensorial registration of Euclidean reconstructions and intersensorial registration with a geo-referenced orthophoto. Finally, we present reconstruction results from a real data-set and outline ideas for future work.

  11. Detecting submerged objects: the application of side scan sonar to forensic contexts.

    PubMed

    Schultz, John J; Healy, Carrie A; Parker, Kenneth; Lowers, Bim

    2013-09-10

    Forensic personnel must deal with numerous challenges when searching for submerged objects. While traditional water search methods have generally involved using dive teams, remotely operated vehicles (ROVs), and water scent dogs for cases involving submerged objects and bodies, law enforcement is increasingly integrating multiple methods that include geophysical technologies. There are numerous advantages for integrating geophysical technologies, such as side scan sonar and ground penetrating radar (GPR), with more traditional search methods. Overall, these methods decrease the time involved searching, in addition to increasing area searched. However, as with other search methods, there are advantages and disadvantages when using each method. For example, in instances with excessive aquatic vegetation or irregular bottom terrain, it may not be possible to discern a submersed body with side scan sonar. As a result, forensic personnel will have the highest rate of success during searches for submerged objects when integrating multiple search methods, including deploying multiple geophysical technologies. The goal of this paper is to discuss the methodology of various search methods that are employed for submerged objects and how these various methods can be integrated as part of a comprehensive protocol for water searches depending upon the type of underwater terrain. In addition, two successful case studies involving the search and recovery of a submerged human body using side scan sonar are presented to illustrate the successful application of integrating a geophysical technology with divers when searching for a submerged object. PMID:23890654

  12. System-Aware Cyber Security

    Microsoft Academic Search

    Rick A. Jones; Barry Horowitz

    2011-01-01

    In this paper we outline the need for a new systems engineering architecturally focused approach for addressing the growing threats of debilitating cyber attacks: System-Aware Se- curity. This novel security architecture resides at the application layer and is based on smart reusable system security services. We layout an initial vision for this architectural formulation and show how it can potentially

  13. Passive Network-Awareness for Dynamic Resource-Constrained Networks

    E-print Network

    Julien, Christine

    Passive Network-Awareness for Dynamic Resource-Constrained Networks Agoston Petz1 , Taesoo Jun2 the possibility of col- lecting reasonably accurate context information passively. This paper introduces a framework for defining passively sensed context through network overhearing, defining context metrics

  14. Application Aware Overlay One-to-Many Data Dissemination Protocol for High-Bandwidth Sensor Actuator Networks

    E-print Network

    Jayasumana, Anura P.

    for atmospheric hazards like tornados, hailstorm etc. Video Surveillance and Live Virtual Reality are other-SAN applications is critically important under catastrophic conditions, such as in the presence of tornados

  15. E-AMOM: An Energy-Aware Modeling and Optimization Methodology for Scientific Applications on Multicore Systems

    E-print Network

    Lively, Charles

    2012-07-16

    to grow. In order to achieve improved performance on multicore systems scientific applications must make use of efficient methods for reducing power consumption and must further be refined to achieve reduced execution time. In this dissertation, we...

  16. Mobile Context Toolbox An Extensible Context Framework for the

    E-print Network

    , such as GSM, WLAN, and Bluetooth. However, utilizing these sensor inputs for developing context-aware mobile@imm.dtu.dk, s073383@student.dtu.dk Abstract In this paper we describe an open framework utilizing sensors. The framework has an extensible layered architecture allowing new hardware and software sensors and features

  17. Cost-Efficient and Application SLA-Aware Client Side Request Scheduling in an Infrastructure-as-a-Service Cloud

    E-print Network

    Dustdar, Schahram

    consumption. One popular approach to cloud computing is the Infrastructure-as-a-Service (IaaS) model [10 Cloud1 or the Eucalyptus2 open source implementation. Even though the IaaS model delivers considerably. For applications deployed to IaaS clouds, service level agreements [7] (SLAs) are becoming increasingly impor- tant

  18. Cache-aware Optimization of BAN Applications Yun Liang, Lei Ju, Samarjit Chakraborty, Tulika Mitra, Abhik Roychoudhury

    E-print Network

    Roychoudhury, Abhik

    of recent interest in design methods, model- ing and software analysis techniques specifically targeted of the application running on the commu- nication gateway of a wireless BAN and accurate modeling alternative to tradi- tional wired biomonitoring techniques, which require a patient to be hospitalized

  19. Situvis: visualising multivariate context information to evaluate situation specifications

    E-print Network

    Dobson, Simon

    these situations. Situations are thus a natural view of a context- aware system, whereas the individual pieces in a context- aware ubiquitous system. Our tool is based on well-founded situation specification semantics of the situation space, and the reliability of modelling with situations based on real, recorded sensor data. It

  20. Incorporating Situation Awareness in Service Specifications

    Microsoft Academic Search

    Stephen S. Yau; Junwei Liu

    2006-01-01

    Service-Oriented Architecture has the major advantage of enabling rapid composition of distributed applications from various services, and has become increasingly popular for many large-scale service- based systems in various application areas, including scientific collaboration, e-business, health care, military, and homeland security. Situation awareness (SAW) is the capability of the entities in a service- based system to be aware of the

  1. Network-Based Learning and Assessment Applications on the Semantic Web

    ERIC Educational Resources Information Center

    Gibson, David

    2005-01-01

    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 are…

  2. Introducing VIP Business Modeling Framework for Innovative, Information-rich and Process-aware E-commerce Web Applications

    Microsoft Academic Search

    Farooque Azam; Zhang Li; Rashid Ahmad

    2006-01-01

    Current Web application modeling approaches lack certain key aspects. Firstly, these approaches do not incorporate value-based requirement engineering as an integral part. Secondly, these approaches typically provide modeling of information aspects at the system design level; however, there is a need to model information at the level of understanding business needs while carrying out analysis. Thirdly, today's `information-rich' and `functionally-complex'

  3. Belief modelling for situation awareness in human-robot interaction

    Microsoft Academic Search

    Pierre Lison; Carsten Ehrler; Geert-Jan M. Kruijff

    2010-01-01

    To interact naturally with humans, robots need to be aware of their own surroundings. This awareness is usually encoded in some implicit or explicit representation of the situated context. In this paper, we present a new framework for constructing rich belief models of the robot's environment. Key to our approach is the use of Markov Logic as a unified framework

  4. An Illustrative Case Study of the Heuristic Practices of a High-Performing Research Department: Toward Building a Model Applicable in the Context of Large Urban Districts

    ERIC Educational Resources Information Center

    Munoz, Marco A.; Rodosky, Robert J.

    2011-01-01

    This case study provides an illustration of the heuristic practices of a high-performing research department, which in turn, will help build much needed models applicable in the context of large urban districts. This case study examines the accountability, planning, evaluation, testing, and research functions of a research department in a large…

  5. PAMAM dendrimers: destined for success or doomed to fail? Plain and modified PAMAM dendrimers in the context of biomedical applications.

    PubMed

    Labieniec-Watala, Magdalena; Watala, Cezary

    2015-01-01

    PAMAM (polyamidoamine) dendrimers are commonly considered promising polymers that can be successfully used in various biomedical applications. Nevertheless, direct clinical adaptations of plain unmodified PAMAM dendrimers may be limited at present, mainly because of their toxicity, unpredictable behavior in living organisms, unknown bioavailability, biocompatibility or pharmacokinetic profile, problematic therapeutic dose selection, or high cost of production. On the basis of our studies concerning the possible use of unmodified PAMAM dendrimers as the scavengers of glucose and carbonyl stress in animal models of human pathology, as well as considering available literature on experimental data of other researchers, we have prepared the brief critical review of the biomedical activities of these unmodified compounds and their most alluring derivatives, especially in the context of possible future perspectives of PAMAMs. Thus, on the pages of this review, we made an attempt to briefly summarize obstacles, emerging from experimental, technical, and human limitations, that may, to some extent, restrain our belief in a brighter future of plain amine-terminated PAMAM dendrimers. PMID:25363074

  6. Modeling Shared Situation Awareness

    Microsoft Academic Search

    Cheryl A. Bolstad; Haydee M. Cuevas

    2005-01-01

    This study presents an initial computational model of shared situation awareness (SA) based upon data collected from a simulated training exercise, designed to mimic real life events in a military personnel recovery center. Situation awareness was measured during the exercise using the Situation Awareness Global Assessment Technique (SAGAT). Our initial model examined how well five factors (social network distance, physical

  7. Marketing Quality Energy Awareness

    E-print Network

    Fortier, L. J.

    and what functional value an awareness plan has for employees (customers). Quality concepts, including performance management, augmented marketing strategies by determining customer requirements, measurements and feedback. The agreed upon critical... MARKETING QUALITY ENERGY AWARENESS LONITA J. FORTIER Engineering Technologist 3M Company Saint Paul, Minnesota ABSTRACT Marketing and quality concepts were utilized in developing an employee awareness plan to facilitate long term...

  8. Awareness and Monitoring in Outdoor Marine Education

    ERIC Educational Resources Information Center

    Stepath, Carl

    2004-01-01

    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…

  9. Applying programmable browsing semantics within the context of the World-Wide Web

    Microsoft Academic Search

    Richard Furuta; Jin-Cheon Na

    2002-01-01

    We discuss application of \\\\caT\\\\ (context-aware Trellis), which extends the Trellis Petri-net-based model of hypertext, towards specification of Web-browsable hypertexts that respond to factors that occur during their use. In addition to characteristics such as a reader's role (e.g., student, teacher, administrator, or parent) and the reader's browsing history, we also include factors that may not have been incorporated as

  10. Expansion of the Real-Time SPoRT-Land Information System for NOAA/National Weather Service Situational Awareness and Local Modeling Applications

    NASA Technical Reports Server (NTRS)

    Case, Jonathan L; White, Kristopher D.

    2014-01-01

    The NASA Short-term Prediction Research and Transition (SPoRT) Center in Huntsville, AL is running a real-time configuration of the Noah land surface model (LSM) within the NASA Land Information System (LIS) framework (hereafter referred to as the "SPoRT-LIS"). Output from the real-time SPoRT-LIS is used for (1) initializing land surface variables for local modeling applications, and (2) displaying in decision support systems for situational awareness and drought monitoring at select NOAA/National Weather Service (NWS) partner offices. The experimental CONUS run incorporates hourly quantitative precipitation estimation (QPE) from the National Severe Storms Laboratory Multi- Radar Multi-Sensor (MRMS) which will be transitioned into operations at the National Centers for Environmental Prediction (NCEP) in Fall 2014.This paper describes the current and experimental SPoRT-LIS configurations, and documents some of the limitations still remaining through the advent of MRMS precipitation analyses in the SPoRT-LIS land surface model (LSM) simulations.

  11. Situation awareness in command and control settings

    NASA Technical Reports Server (NTRS)

    Patterson, Robert W.

    1992-01-01

    Many military and civilian operational settings are described as command and control (C2) environments characterized by high information load, extensive team coordination, and communication demands. To address these problems, designers have turned to the application of automation and decision aids. Currently, there are few techniques for assessing the performance of C2 operators with which to guide applications. A need exists for constructs on which to evaluate C2 systems. One possible concept for addressing these issues is that of Situation Awareness (SA). The SA concept and methodologies have developed largely around the cockpit environment. The extension is discussed of the SA concept to a team context related to C2 environments. Then the implications of such an approach for developing a methodology to empirically measure team SA in a C2 environment which should allow for the assessment of SA of both individual operators and overall SA of operational teams. The discussion also focuses on how a knowledge of SA may impact the design and development of systems which optimize rather than maximize information access and processing and, subsequently, improve C2 decision making.

  12. 78 FR 76254 - Special Conditions: Airbus, Model A350-900 Series Airplane; Control Surface Awareness and Mode...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-17

    ...associated with control surface awareness and mode annunciation...conditions for control surface awareness, applicable to Airbus...unexpected control-limiting situations, must be properly balanced between needed crew awareness and nuisance...

  13. Awareness and Use of Folic Acid among Women in the Lower Mississippi Delta

    ERIC Educational Resources Information Center

    Robbins, James M.; Hopkins, Sarah E.; Mosley, Bridget S.; Casey, Patrick H.; Cleves, Mario A.; Hobbs, Charlotte A.

    2006-01-01

    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…

  14. Ambient Intelligence Context-Based Cross-Layer Design in Wireless Sensor Networks

    PubMed Central

    Liu, Yang; Seet, Boon-Chong; Al-Anbuky, Adnan

    2014-01-01

    By exchanging information directly between non-adjacent protocol layers, cross-layer (CL) interaction can significantly improve and optimize network performances such as energy efficiency and delay. This is particularly important for wireless sensor networks (WSNs) where sensor devices are energy-constrained and deployed for real-time monitoring applications. Existing CL schemes mainly exploit information exchange between physical, medium access control (MAC), and routing layers, with only a handful involving application layer. For the first time, we proposed a framework for CL optimization based on user context of ambient intelligence (AmI) application and an ontology-based context modeling and reasoning mechanism. We applied the proposed framework to jointly optimize MAC and network (NET) layer protocols for WSNs. Extensive evaluations show that the resulting optimization through context awareness and CL interaction for both MAC and NET layer protocols can yield substantial improvements in terms of throughput, packet delivery, delay, and energy performances. PMID:25317760

  15. Ambient intelligence context-based cross-layer design in wireless sensor networks.

    PubMed

    Liu, Yang; Seet, Boon-Chong; Al-Anbuky, Adnan

    2014-01-01

    By exchanging information directly between non-adjacent protocol layers, cross-layer (CL) interaction can significantly improve and optimize network performances such as energy efficiency and delay. This is particularly important for wireless sensor networks (WSNs) where sensor devices are energy-constrained and deployed for real-time monitoring applications. Existing CL schemes mainly exploit information exchange between physical, medium access control (MAC), and routing layers, with only a handful involving application layer. For the first time, we proposed a framework for CL optimization based on user context of ambient intelligence (AmI) application and an ontology-based context modeling and reasoning mechanism. We applied the proposed framework to jointly optimize MAC and network (NET) layer protocols for WSNs. Extensive evaluations show that the resulting optimization through context awareness and CL interaction for both MAC and NET layer protocols can yield substantial improvements in terms of throughput, packet delivery, delay, and energy performances. PMID:25317760

  16. Semantic Web in the Context Broker Architecture

    Microsoft Academic Search

    Harry Chen; Timothy W. Finin; Anupam Joshi

    2004-01-01

    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

  17. Temporal Context Lie Detection and Generation

    Microsoft Academic Search

    An Xiangdong; Dawn N. Jutla; Nick Cercone

    2006-01-01

    In pervasive (ubiquitous) environments, context-aware agents are used to obtain, understand, and share local contexts with\\u000a each other so that all resources in the environments could be integrated seamlessly. Context exchanging should be made privacy-conscious,\\u000a which is generally controlled by users’ privacy preferences. Besides who has rights to get what true information about him,\\u000a a user’s privacy preference could also

  18. Personalizing situation awareness

    SciTech Connect

    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

    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.

  19. Raising Cultural Awareness in the English Language Classroom

    ERIC Educational Resources Information Center

    Frank, Jerrold

    2013-01-01

    This article discusses how teachers can incorporate cultural knowledge into English language classes, exploring elements of culture, intercultural phenomena, and high-context and low-context cultures. Activities offered by the author to raise cultural awareness include web quests, role plays, cultural observations, and culture journals.

  20. Describing the Situational Contexts of Sweetened Product Consumption in a Middle Eastern Canadian Community: Application of a Mixed Method Design

    PubMed Central

    Moubarac, Jean-Claude; Cargo, Margaret; Receveur, Olivier; Daniel, Mark

    2012-01-01

    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. PMID:23028597

  1. Context Clues

    NSDL National Science Digital Library

    Mrs. Devitry

    2011-04-11

    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. ...

  2. Context Clues

    NSDL National Science Digital Library

    Mrs. Branscomb

    2011-12-07

    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. ...

  3. awareness and pollution prevention

    E-print Network

    Tsien, Roger Y.

    ..............................................5 Storm Water Pollution Prevention.....................5 Sanitary Sewer System ManagementHazard awareness and pollution prevention for contractors and visitors at UCSD #12;Hazard Awareness and Pollution Prevention For Contractors and Visitors at UC San Diego This booklet was developed by UC San Diego

  4. Promoting general metacognitive awareness

    Microsoft Academic Search

    GREGORY SCHRAW

    1998-01-01

    I describe two aspects of metacognition, knowledge of cognition and regulation of cognition, and how they are related to domain-specific knowledge and cognitive abilities. I argue that metacognitive knowledge is multidimensional, domain-general in nature, and teach- able. Four instructional strategies are described for promoting the construction and acquisition of metacognitive awareness. These include promoting general awareness, improving self- knowledge and

  5. Situation Awareness and Analysis

    Microsoft Academic Search

    Richard Breton; Robert Rousseau

    The term situation awareness (SAW) has emerged as an important concept in dynamic human decision-making. When experts speak about the existence of a general phenomenon called situation awareness, most discussions are reasonably consensual. When the same experts attempt to define this expression in concrete words, the result is debatable. Actually, many authors have expanded their definition of SAW by developing

  6. Environmental Awareness Bibliography.

    ERIC Educational Resources Information Center

    Swan, Fred C.

    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…

  7. Brain Awareness Week

    NSDL National Science Digital Library

    Sf (Society for Neuroscience)

    2005-05-01

    Brain Awareness Week (BAW) is an inspirational global campaign that unites those who share an interest in elevating public awareness about the progress and benefits of brain and nervous system research. BAW focuses international attention on the field of neuroscience and offers opportunities for teachers and students to engage in fun educational activities.

  8. Busy families' awareness needs

    Microsoft Academic Search

    Vassilis-javed Khan; Panos Markopoulos

    2009-01-01

    This work examines how awareness systems, a class of technologies that support sustained and effortless communication between individuals and groups, can support family communication. Going beyond the evaluation of specific design concepts, this paper reports on three studies that aimed to answer the following research questions: (a) Do families want to be aware of each other through the day? Or,

  9. 2005 Disability Awareness Night

    ERIC Educational Resources Information Center

    Exceptional Parent, 2005

    2005-01-01

    The mission of Disability Awareness Night is to expand awareness of the 54 million Americans with disabilities, by highlighting their extraordinary achievements and the perseverance and dedication of the families, caregivers, physicians, nurses, therapists and teachers involved in their care and development. The presentation of the EP Maxwell…

  10. Designing mobile awareness cues

    Microsoft Academic Search

    Antti Oulasvirta

    2008-01-01

    This paper considers how we may design future mobile awareness systems. Building upon research on social cognition, we suggest the need to take into account what is known about humans' inter- pretational capabilities. We identify design issues from the level of an individual awareness cue to the level of a product concept, systematically exposing the associated solution spaces. Using four

  11. Universite Joseph Fourier --Master 2 Recherche -Syst`emes et Applications Reparties Repartition adaptative d'ev`enements en contexte

    E-print Network

    Pous, Damien

    .3 Tests avec adaptation dynamique . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4.4 Co^ut de l´epartition adaptative d'´ev`enements en contexte multiprocesseur Projet r´ealis´e par : Sylvain GENEV`ES Soutenu le : 23`ele de programmation par ´ev´enements . . . . . . . . . . . . . . . . 8 1.2 Architecture mat´erielle et

  12. Language Rights versus Speakers' Rights: On the Applicability of Western Language Rights Approaches in Eastern European Contexts

    ERIC Educational Resources Information Center

    Pavlenko, Aneta

    2011-01-01

    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…

  13. Using Visual Analytics to Maintain Situation Awareness in Astrophysics

    SciTech Connect

    Aragon, Cecilia R.; Poon, Sarah S.; Aldering, Gregory S.; Thomas, Rollin C.; Quimby, Robert

    2008-07-01

    We present a novel collaborative visual analytics application for cognitively overloaded users in the astrophysics domain. The system was developed for scientists needing to analyze heterogeneous, complex data under time pressure, and then make predictions and time-critical decisions rapidly and correctly under a constant influx of changing data. The Sunfall Data Taking system utilizes severalnovel visualization and analysis techniques to enable a team of geographically distributed domain specialists to effectively and remotely maneuver a custom-built instrument under challenging operational conditions. Sunfall Data Taking has been in use for over eighteen months by a major international astrophysics collaboration (the largest data volume supernova search currently in operation), and has substantially improved the operational efficiency of its users. We describe the system design process by an interdisciplinary team, the system architecture, and the results of an informal usability evaluation of the production system by domain experts in the context of Endsley?s three levels of situation awareness.

  14. Recognizing User Context Using Mobile Handsets with Acceleration Sensors

    Microsoft Academic Search

    Yoshihiro Kawahara; Hisashi Kurasawa; Hiroyuki Morikawa

    2007-01-01

    User context recognition is one of the important technologies for realizing context aware services. Conventional multi sensor based approach has advantages in that it can generate variety of contexts with less computation resources by using many different sensors. However, such systems tend to be complex and cumbersome and, thus, do not fit in well with mobile environment. In this sense,

  15. Expansion of the Real-time Sport-land Information System for NOAA/National Weather Service Situational Awareness and Local Modeling Applications

    NASA Technical Reports Server (NTRS)

    Case, Jonathan L.

    2014-01-01

    The NASA Short-term Prediction Research and Transition (SPoRT) Center has been running a real-time version of the Land Information System (LIS) since summer 2010 (hereafter, SPoRTLIS). The real-time SPoRT-LIS runs the Noah land surface model (LSM) in an offline capacity apart from a numerical weather prediction model, using input atmospheric and precipitation analyses (i.e., "forcings") to drive the Noah LSM integration at 3-km resolution. Its objectives are to (1) produce local-scale information about the soil state for NOAA/National Weather Service (NWS) situational awareness applications such as drought monitoring and assessing flood potential, and (2) provide land surface initialization fields for local modeling initiatives. The current domain extent has been limited by the input atmospheric analyses that drive the Noah LSM integration within SPoRT-LIS, specifically the National Centers for Environmental Prediction (NCEP) Stage IV precipitation analyses. Due to the nature of the geographical edges of the Stage IV precipitation grid and its limitations in the western U.S., the SPoRT-LIS was originally confined to a domain fully nested within the Stage IV grid, over the southeastern half of the Conterminous United States (CONUS). In order to expand the real-time SPoRT-LIS to a full CONUS domain, alternative precipitation forcing datasets were explored in year-long, offline comparison runs of the Noah LSM. Based on results of these comparison simulations, we chose to implement the radar/gauge-based precipitation analyses from the National Severe Storms Laboratory as a replacement to the Stage IV product. The Multi-Radar Multi-Sensor (MRMS; formerly known as the National Mosaic and multi-sensor Quantitative precipitation estimate) product has full CONUS coverage at higher-resolution, thereby providing better coverage and greater detail than that of the Stage IV product. This paper will describe the expanded/upgraded SPoRT-LIS, present comparisons between the original and upgraded SPoRT-LIS, and discuss the path forward for future collaboration opportunities with SPoRT partners in the NWS.

  16. Situation Awareness Information Dominance & Information Warfare

    Microsoft Academic Search

    Mica R. Endsley; William M. Jones

    Abstract Information warfare and its primary objective, achieving information dominance over enemy forces, has arisen as a major area of emphasis for future military actions. The concept,of information dominance,and the issues involved in attaining it are explored through a model,of situation awareness within the context of complex, distributed crews (or military units) as is envisioned in future military operations. Achieving

  17. Field-Based Coordination for Pervasive Computing Applications

    Microsoft Academic Search

    Marco Mamei; Franco Zambonelli

    2007-01-01

    Emerging pervasive computing technologies such as sensor networks and RFID tags can be embedded in our everyday environment to digitally store and elaborate a variety of information. By having appli- cation agents access in a dynamic and wireless way such distributed in- formation, it is possible to enforce a notable degree of context-awareness in applications, and increase the capabilities of

  18. A Utility-Based Adaptivity Model for Mobile Applications

    Microsoft Academic Search

    Mourad Alia; Viktor S. Wold Eide; Nearchos Paspallis; Frank Eliassen; Svein O. Hallsteinsen; George A. Papadopoulos

    2007-01-01

    Mobile environments are characterized by resource fluc- tuations and limitations, and variations in user preferenc es. Therefore mobile applications need to be adaptive to re- tain usability, usefulness and reliability. In our approac h to support adaptivity, we combine context awareness, reflec- tion and component composition planning. The planning is done by generic middleware and supports dynamic discov- ery, utility-based

  19. ICEMAN: A System for Efficient, Robust and Secure Situational Awareness at the Network Edge

    E-print Network

    Stehr, Mark-Oliver

    ICEMAN: A System for Efficient, Robust and Secure Situational Awareness at the Network Edge Samuel situational-awareness applications operating in networks subject to severe disruption. Its functionality}@csl.sri.com Abstract--Situational awareness applications in disaster re- sponse and tactical scenarios require

  20. Awareness Projected: Moving Awareness to a Public Space

    E-print Network

    Greenberg, Saul

    Awareness Projected: Moving Awareness to a Public Space Michael Rounding, Saul Greenberg awareness can only work when people inhabit a common space. Kraut, Egido and Galegher [10] correlated by projecting casual awareness information into a public space via a computer­controlled medium. We expect