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The growing utilization of Internet administration in the recent years has facilitated an increment in the various types of attacks. Despite the best protection measures, many attacks have been effectively done against many organization and enterprises. Anomaly detection, misuse detection are used to detect various type of attacks. Anomaly detection produce high rate of false alarms and the later...
In this paper, we present experimental results of the deployment of a wireless sensor network for inventory and localization of mobile assets in an indoor office building. The system is based on the IEEE 802.15.4 standard at 2.4 GHz and the localization scheme is based on RSSI measurements between mobile tags and an infrastructure of reference nodes located in the ceiling of the building. We present...
With the growing popularity of intelligent terminals, as well as the increasing demand for location-based service, a design and implementation of WiFi network based mobile location service system and a location algorithm based on GMM (Gauss Mixture Model) introduced in this paper. The algorithm consists of an offline training phase and a real time localization phase, and RSSI is modeled by GMM. This...
The present research was conducted at the Budapest University of Technology in the field of indoor location using radio waves of Wi-Fi networks with a focus on practical application issues. Our goal was to enhance and combine existing algorithms and create an implementation that is efficient enough to enable real-time operation in 3D space in multi-level office environments while retaining the accuracy...
This paper introduces a novel method for positioning using coverage area estimates of wireless communication nodes. The coverage areas are estimated in a Bayesian inference framework using location fingerprints that are collected in an offline calibration phase, and the estimated coverage areas are stored in a database. In the online positioning phase the coverage areas of the heard communication...
Mobile learning exposes learning to the natural environment. If this environment is large, the learners have to navigate to find the learning objects or to explore the environment. Current mobile learning systems provide only minimal navigational support. Prior studies report that conventional pedestrian information systems are not suited to mobile learning, as the learners focus too much on the navigation...
This paper presents the implementation of a novel seamless indoor/outdoor positioning service for mobile users.The service is being made available in the Streamspin system(www.streamspin.com), an open platform for the creation and delivery of location-based services. Streamspin seeks to enable the delivery of truly ubiquitous location-based services by integrating GPS and Wi-Fi location fingerprinting...
A simple technique to position a mobile node inside a building based on the Received Signal Strength (RSS) of wireless LAN (WLAN) is proposed. Compared to existing positioning algorithm, it is more economical, of low complexity and high-precision. To evaluate the position estimation accuracy of the proposed algorithm, we developed the prototype system and experimented in our office. The result presents...
In recent years, the indoor positioning systems using the existing wireless local area network and Location fingerprinting schemes are the most popular system. The accuracy of the system is the most important indicator. In this paper we present experimental studies to emphasize on location error. Two experimentation stages are realized. The first one is based on selected reference points. The second...
We have developed a system built on our mobile AR platform that provides users with see-through vision, allowing visualization of occluded objects textured with real-time video information. We present a user study that evaluates the userpsilas ability to view this information and understand the appearance of an outdoor area occluded by a building while using a mobile AR computer. This understanding...
Location-based services are playing an increasingly important role in the rapidly evolving world of mobile applications. Despite this importance, there are numerous challenges to providing a widely implemented and usable service that spans multiple places, devices, and location technologies. This paper describes WhereAmI, a unique location services testbed that addresses these challenges and is enabling...
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