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The emerging platforms for viewer-centric mobile spatial interaction are based on best effort performance of the underlying positioning and orientation sensors. Besides, these platforms adopt rather simplified visibility models of the scene geometry, which makes these platforms inadequate for interaction scenarios that demand accurate and visibility-aware interaction. In this paper, we present iView;...
This paper discusses the efficient message deletion mechanism, which will be able to apply regardless of applied routing protocol, in DTNs (Delay Tolerant Networks). In order to achieve an acceptable quality of message delivery probability, we will need to allow the multiple message replicas in the system. In this context, the capability and capacity of store-carry-and-forward at the nodes is crucial...
An increasing number of embedded devices of all sorts (sensors, mobile phones, cameras, smart meters, traffic lights, home appliances etc.) are now capable of communicating and sharing data over the Internet. We have developed a web-based infrastructure called Sensor.Network for storing, sharing, searching, visualizing and analyzing data from heterogeneous devices and facilitating easy interaction...
A work in progress of a tool designed to help sports coaches to analyze their players using an RFID technology connected to a 3-layer software is described in this paper. A few ranging techniques available in conventional RFID systems were studied to best fit this application scenario. Together with the RFID equipments, there is a 3-layer system managing all the data. The software bottom layer is...
Adherence to therapy, what is termed `compliance', is a very important topic in Medicare. It has considerable effects not only in terms of enhancing quality of life for patients, but also in reducing the financial burden on the health care system. The individualized weekly medicament blister for patients (7??4 Box) from 7??4 Pharma increases the compliance and helps to keep the health expenditures...
This demonstration presents the ongoing development of a framework for a global wireless sensor / actuator network (GWSAN). This GWSAN is formed through the interconnection of about 10 WSAN testbeds currently mainly located in Asia and Europe. GWSANs are one of the enabler for the Internet of Things and thus the Web of Things. Similar to the beginning of the Internet in the late 70s this GWSAN is...
The construction of world models typically requires laborious survey and cataloguing of a building's contents. OpenRoomMap attempts to crowd-source this information by allowing all building occupants to contribute to the model. Our initial deployment of OpenRoomMap has considered our office building that has a floor area of approximately 10000 square meters over 3 floors. Building occupants have mapped...
In this paper we report our research on the development of an open web-based architecture for controlling the behavior of systems composed of static sensors, mobile sensors and unmanned vehicles. We document the first implementation of the architecture and describe its application to our vehicles and sensors. We discuss the validation of this implementation in real-world deployments where one or more...
Bringing heterogeneous devices like industrial machines, home appliances, and wireless sensors into the Web assumes the usage of well-defined standards and protocols. Our approach combines the Web Service standard for devices DPWS with the embedded system and component management standard OSGi. It implements the specifications of OSGi Remote Services, as well as OASIS Discovery, Eventing, SOAP-over-UDP,...
Since GPS receivers have become a commodity anyone could access and use location information simply and freely. Such an easy access to ones' location is instrumental to development of location-aware applications. However, existing applications are static in that they do not model relations between places and mobile things. Moreover, these applications do not allow to easily map the physical location...
Ontology-based information integration systems have been proposed to solve the problem of combining data residing at autonomous and heterogeneous sources. For such ontology based solutions to succeed in an industrial context, the integration ontology and mappings need to be managed to allow them to evolve as the data sources evolve. This research has developed a technique to support the management...
Urban Computing is an extension of Ubiquitous Computing. It shares common requirements with its predecessor, like context awareness, user centricity, composability and dynamicity. However, a challenging issue of urban computing is to provide available services to diverse, spontaneous social groups. A major requirement for this challenge is spontaneity, which is about supporting social groups by coordinating...
When emergency services are in a crisis situation, one of their major needs is to have efficient communication. Every person involved needs to have the most up-to-date and relevant information at all times and needs to be able to communicate with his colleagues effectively. In order to support this, it is important that the network used by the emergency services supports all necessary communication...
We conduct a study to determine when best to provide reminders by recognizing the interruption relations that occur in human behaviors. A model based on Petri Net to describe the execution of multiple activities is proposed. This approach aids the automatic analysis of activity interruption and supports adaptive prompting. We describe our experience in building a medication system that provides context-aware...
Cognitive Radio (CR) technology enables the opportunistic use of the portions of the licensed spectrum by the CR users, while ensuring that the performance of the primary users (PUs) of the licensed bands is not affected. The spectrum is sensed locally by the CR users, and a specific channel that is acceptable to both the end nodes of the communication link is chosen. However, this necessitates a...
There is growing interest in using workflows to describe, monitor and direct a wide-range of medical procedures in hospitals. Unlike their well-established business counterparts, medical workflows require a high degree of execution flexibility since it is impossible to anticipate all the possible circumstances that might influence their execution and it is important that staff are permitted to respond...
Communication networks play a fundamental role in the response to massive catastrophes. In case of emergency, the main purpose of public authorities is to avoid damages for people and for buildings and the presence of a reliable communication infrastructure is vital. In this context, the use of IEEE 802.15.4 Wireless Personal Area Networks seems particularly appropriate to allow communications among...
This paper presents an ad-hoc vehicular protocol to support the logistics of first responders. First responders often travel several kilometers to reach an area impacted by an accident or other emergency. The street-path between an emergency responder and an operational field often includes densely populated areas with busy vehicular traffic. It is key that emergency vehicles are able to traverse...
Fire monitoring and evacuation for building environments is a novel application for the deployment of wireless sensor networks. In this context, real-time and robust routing is essential to ensure safe and timely building evacuation and the best application of fire fighting resources. Existing routing mechanisms for wireless sensor networks are not well suited for building emergencies, especially...
The Augmented Knight's Castle (AKC) comprises traditional play figures and scenery embedded with radio frequency identification (RFID) technology to enhance user experience by triggering various forms of audio output. In this paper we present the results of a user study with over 100 children to evaluate the AKC in terms of playful learning, compared with an identical, non-augmented version. Findings...
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