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Pedestrians globally comprise 22 % of all road traffic deaths in 2013. Various approaches for reducing accident numbers have already been introduced and are still being researched. Most of these approaches have specific limitations, like requiring line of sight. To overcome these limitations, we propose the Wireless Seat Belt (WSB), a smartphone-based collision avoidance system for pedestrians. Unlike...
We develop an operator theoretic framework for heterogeneous, discrete-time, nonstationary linear parameter-varying systems in linear fractional representation. These systems are interconnected over arbitrary directed graphs and subjected to a communication latency of one sampling period. We give results, based on the ℓ2-induced norm performance measure, for analysis and synthesis of distributed controllers...
Among all the Internet of Things (IoT) applications, the Smart City concept has received significant attention in the last few years. The main motivation behind this interest is attributable to population growth and urbanization trend. Cities need, indeed, to be ready to face new challenges - e.g., traffic congestion, wast management, etc. - caused by this new amount of citizens. To address those...
The paper presents an event driven approach for building interactive environments with sensory effects (such as RGB color light, wind and vibration) described through MPEGV standard. The most important differences of this work from previous ones are: (1) it divides the design process into well defined stages, showing the behavior of the system under a new perspective and their interactions, (2) it...
The expected evolution of the IoT into a huge and growing number of sensors connected to the Internet and generating a huge amount of data, translates into new challenges in the analysis phase for the extraction of useful information to the final user. This scenario opens new opportunities for the introduction of context-awareness features, as it is possible to store context information linked to...
The proliferation of sensor and actuator networks in the urban environment is directly associated with an increasing volume of data, relating to various aspects of the city. Synchronously, the heterogeneity of data formats, sensory observations, measuring capabilities and accompanying contextual information is substantially growing. Aggregating immense amounts of data feeds from different networks...
We propose a reusable and extensible hub architecture, Ubiquitous Box Architecture (UBA), which can be used in scenarios where various devices and sensors need to communicate with each other. It includes four main components, namely (1) Ubiquitous Box, (2) Plug in Server, (3) Authorization Server and (4) client applications. To show the robustness of the architecture, we present how UBA can be applied...
In this paper we present DroidOppPathFinder, a Mobile Social Network application designed to generate and share contents about paths for fitness activity in a city. The application is able to recommend the best path in a specific area by analyzing the user's preferences and real-time environmental characteristics collected by heterogeneous sensing devices and services through opportunistic sensing...
For a large and complex safety-critical system, where safety is ensured by a strict control over many properties, the safety information is structured into a safety case. As a small change to the system design may potentially affect a large section of the safety argumentation, a systematic method for evaluating the impact of system changes on the safety argumentation would be valuable. We have chosen...
High Peak to Average Power Ratio (PAPR) is a critical issue in multi-standard and multi-carrier communication systems. This problem can result in large performance degradation due to the non-linearity of the High Power Amplifier (HPA) or in low power efficiency. The Cognitive Radio (CR) is an efficient technology to meet the Green communications concept. In this paper, we study the PAPR reduction...
In this paper we introduce a new framework for the development of context-aware knowledge by integrating the user's digital and physical environment. The developed knowledge can contribute to solve problems and challenges of wireless sensor networks within a context that is described by additional cyber-content. Sensor networks are exposed, intentionally or not, to dynamically changing network structures...
Presence management, i.e., the ability to automatically identify the status and availability of communication partners, is becoming an invaluable tool for collaboration in enterprise contexts. In this paper, we argue for efficient presence management by means of a holistic view of both physical context and virtual presence in online communication channels. We sketch the components for enabling presence...
SoftWare radio (SWR) is an enabling technology for cognitive radio (CR) systems which promises to (de) modulate any signal, at any frequency. SWR signal, therefore, is composed of different standard's signals and this combination leads to high temporal fluctuations and thus SWR signal inherits high peak to average power ratio (PAPR). Non-linear analogue components (amplifiers, converters etc.) cause...
Sense the Hudson is an innovative new project which integrates science, technology, engineering and mathematics (STEM) skills into a robust interdisciplinary curricula and teacher development effort in which high school students design, build, test, deploy and interpret their own environmental sensors.
Collaborative decision support is critical to providing the warfighter much-needed Universal situational awareness (USA) and a better understanding of information flowing from complex sensor webs. USA requires the ability to rapidly correlate sensor data and provide easy-to-understand collaborative decision support tools. The design knowledge company (TDKC) is currently developing the XTM collaborative...
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