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The paper presents the design and implementation of a low cost and open source assistive system exploiting a wearable device in order to support deaf-blind people in communication using the Malossi alphabet. More specifically, the system, that we called GlovePi, is composed by three main low cost components, such as: (i) a gardener glove; (ii) a Raspberry Pi; (iii) a MPR121 capacitive touch sensor...
A brokering platform distributing the data collected by a set of Wireless Sensor Networks (WSNs) to end customers is considered, where WSNs receive a payment from the broker proportional to the amount of data they provide and pay the network provider a flat fee, while end customers pay a flat fee to access those data. In the case where the broker can set both prices, the optimal pricing strategy,...
Participatory sensing is an emerging paradigm in which citizens voluntarily use their mobile phones to capture and share sensed data from their surrounding environment in order to monitor and analyze some phenomena. Participating users can disrupt the system by contributing corrupted, fabricated, or erroneous data. Different reputation systems have been proposed to monitor participants' behavior and...
Some of the most advanced functions in automated vehicles are in the parking domain, since it provides structured environments and slow speeds. As most parking garages deny GNSS reception, vehicles rely on dead reckoning or simple path-finding algorithms. To this regard, we have developed an infrastructure-based positioning system using cameras. In this paper, we present a novel approach on how to...
Human beings are dependent on the natural resources that stands for its quality. Climatic changes and environmental impacts have always been under observation. The quality of the products is always measured before use. Water, an inevitable resource, has got a serious significance in checking its quality due to the influence of various external factors like industrial effluents, acid rain etc. This...
Cognitive Radio (CR) technology offers a promising solution to the spectrum scarcity problem via Dynamic Spectrum Allocation (DSA). Due to the nature of Cognitive Radio Networks (CRNs), where two networks are active simultaneously, a significant amount of control messaging is required in order to coordinate channel access, schedule sensing, and establish release connections. Efficient Control Plane...
This paper proposes two channel assignment models to manage channel blocking of the primary users (PUs) and the secondary users (SUs) in cognitive radio (CR) networks. The proposed models provide priority based channel assignment strategies for the PUs and SUs. In order to manage the blocking of PUs and SUs, channel blocking analysis for both models is performed using the Markov chain process. Further,...
STEM outreach continues to grow and be an effective means to inspire young minds. Finding optimal paths and methods to reach these students continues to be a focus for educators and researchers. As with any system, there is a complex network of influencing factors and stakeholders that ensure the system operates effectively. This paper examines methods to utilize stakeholders outside of the typical...
In the real world, sensors are always exposes to noise and error during measurements. These problems will lead to invalid and overshoot readings, as well as blank data. Fortunately, these errors can be treated using filters. For data collection process using laser range finder, the use of filters is necessary as they can help to overcome the laser limitations and improve the scanning input. Here,...
This paper presents the prophecy of parking area in parking management system using Geographic Information System (GIS). Parking area is generated by using Google SketchUp Pro 2015. One of the most outstanding and major problems in the parking management system is to search for an empty parking space. In recent years, there has been an expanding enthusiasm from drivers to have access to real-time...
Energy crisis is one of the prime challenges being faced by many of the countries in the world today. Industrial development and population growth has tremendously increased the demand for energy to a huge extent. Many researchers and developers have come up with effective systems so as deal with this problem. A lot of techniques have been suggested such as an Energy monitoring system which is an...
As a novel concept, "Informed Design" is proposed in a multidisciplinary project "Livable Places" in Singapore to innovate place design from empirical to evidential by harnessing geo-referenced "Big Data" for a responsive design. As a final delivery, an Informed Design Platform (IDP) is being implemented as a design support tool interpreting multi-source big data to adaptive...
In order to realize the function of accurate measurement, multipoint collection and wireless transmission on various environmental monitoring factors in the workshop, a workshop environment monitoring system is proposed based on the technology of internet of things. A number of wireless monitoring nodes are set up in each workshop to collect a variety of environmental information, then transmit the...
A context aware environment for workshop with game storming was developed with vision sensors and was evaluated its capability for supporting facilitator of workshop through feasibility test. In this paper, overview of the aware environment for workshop, basic capability of the environment, and results of feasibility test are described.
The wide spread of smart mobile devices such as tablets and phones makes mobile crowdsensing a viable approach for collecting data and monitoring phenomena of common interest. Smart devices can sense and compute their surroundings and contribute to mechanisms that examine social and collective behaviours. Crowdsensing offers a feasible alternative to exchange and compute sensing tasks and data between...
An autonomous vehicle (AV) is coined as a term that signifies a vehicle that can be operated with minimal or zero human intervention. The adverts of our technologies have made this possible and is foreseen to be made publicly available in the near future. The realization of this technology comes together with the abilities of sensors to analyze data regarding its surrounding environment and communicating...
A double-tail sense amplifier (DTSA) is designed as a drop-in replacement for a conventional SRAM sense amplifier (SA), to enable a robust read operation at low voltages. A pre-amplification stage helps reduce the offset voltage of the sense amplifier by magnifying the input of the regeneration stage. The self-timed regenerative latch simplifies the timing logic so the DTSA can replace the SA with...
The proposed system is using low-cost Arduino MEGA 2560 Development Board, synthesizing with PLC module, facilitated with QPSK modulating capability. A generic R-type fire alarm system is hereafter constructed, with a master-slave architecture connecting to fire sensors. No extra modification/rehabilitation is needed for those old buildings because the proposed fire alarm system is mounted on buildings'...
In this article, we present the construction of observers of rotor flux and mechanical speed needed for robust control of the asynchronous machine. Two observers will be developed for comparison. The first is based on the technics MRAS and the second is observer of KUBOTA, with the enhanced DTC, “sensorless DTC”.
The prevalence of wearable devices brought questions about their impact on user habits, use cases and future developments. Will users continue to use smart phones even if they have high capacity wearable devices? If that will be the case, for which reason people will continue to carry smartphones with them? User mobility and soft application usage correlation is an important research area for setting...
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