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People with disabilities usually face difficulties during travel in aircrafts. Among these difficulties, there are limitations while seated during the journey. The seat and console controls may be hard to reach and use or not accessible at all. Considering the trend of airliners to allow the usage of wireless devices during flights, personal mobile devices become an option for improving comfort and...
An application of active inductors in a CMOS LNA with inductive partial degeneration in 0.35µm technology is presented. Both, the inductor of the partial degeneration and the output load inductor, are actives. The results are satisfactory, validating the compact design and demonstrating the technical feasibility of this design for use in several electronic RF devices.
Terrestrial TV stations make up networks that may have regional or national coverage, far away from the local coverage feature in which they were proposed. In this context, we analyze the impact of these networks on the experience of the user has to watch TV, since the variety of channels available through local and global content, and, finally, evaluating the spectator's expectations regarding the...
Nowadays, the industry is discussing the different HDR Content Transmission proposals. There is no global standard of HDR Content Broadcast Transmission yet, which opens countless opportunities for global consumer's electronics in the future. For this reason, we propose an efficient Broadcast transmission with backwards compatibility with ISDB-Tb considering to actual standards. Additionally, each...
This paper presents a recommendation system based on sentiment analysis of sentences extracted from Social Networks considering an algorithm which depends on the adverb found in the sentence. Furthermore, the recommendation system has a low complexity, therefore the perceived impacts on the analysis of energy consumption on electronic devices is almost negligible.
GLOBAL ITV project is an initiative for global standards applied to iTV. Ginga-NCL and HbbTV integration in a terminal device was reached including compatibility for HTML5 in a hybrid environment. Next steps consists to establish a web-based platform and aggregate iTV players as a browser plug-ins.
Almost all of the wireless devices are supplied by chemical batteries. These batteries have a number of disadvantages. In this study, a broadband RF energy harvester was designed to providing the use of wireless devices without batteries or increasing battery life. The system is designed to work between 500 MHz and 900 MHz. Thus, the proposed system can be obtained electrical energy from both DTV...
Open Hardware and Free Software have both active communities. Open source software projects have helped many companies launch their products, but that has not happened in the same proportion for hardware. Assistive technology industry is known to be extremely restricted to proprietary solutions, which may lead to slower development cycles as there is a smaller community of device developers. This...
Recently, Light Emitting Diode (LED) projectors have been widely adopted by consumers. These low-cost compact projectors provide high-brightness and high-resolution images. In addition, the LED bias current can be incrementally adjusted individually for each color LED, i.e. Red, Green, and Blue, which allow a more accurate tuning capability than in traditional light bulb projectors. The variation...
Ultraviolet radiation from the Sun is an essential part of the process of obtaining Vitamin D by the human body. However, prolonged exposure poses a risk to the health of the skin and eyes that can lead to premature aging and even cancer. Moreover, the quick technological development shows some barriers for visually impaired users because they require special help via audio devices, in order to access...
Viewing quality assessment is important in every phase of coder development and deployment, and also in the design and operation of video streaming services. In the development and design phases an objective metric is more cost-effective and less time-consuming than a subjective assessment. The behavior of the impairment caused by packet-delay-variation (PDV) over quality inspires the conception of...
Wireless Sensor Networks (WSN) are the basis for several applications including environmental and health monitoring, industrial and home automation, consumer electronics connectivity, and public safety, being a key technology for Internet of Things and Smart Cities development. Software-defined networking (SDN) paradigm could reduce complexity in WSN configuration, management and re-tasking. However...
In this article, we propose three different neural networks architectures for predicting the received signal power of the Brazilian digital TV system based on the effective transmission heights for each frequency channel and the points of reception inside the coverage area. The presented models will be analyzed and compared with the main propagation models used for digital TV described in the scientific...
This article aims to present a mobile application to remotely optimize the use of household appliances in a home based on the dynamic variation of electricity price throughout the day. The customer defines the limits of hourly consumption and the use time interval of each appliance throughout the day in the mobile application, and it communicates with Matlab software installed on a computer to perform...
This study evaluates a large Profinet network using ring topology applied in an industry production line. The analysis is based on some performance indicators: jitter and throughput taking in consideration the update time of the devices, number of switches and cable length between IO-Devices and the IO-Controller. The network studied has a considerable amount of devices including distributed IOs,...
Billions of devices are expected to be Internet-enabled by 2020, levering the Internet of Things (IoT). Device discovery is a problem of finding useful devices in order to accomplish a task, and it constitutes a major challenge for IoT. Once a device finds another with the desired characteristics and establishes a negotiated communication, novel services can be generated through cooperation. Several...
This work objectively proposes and describes the development project of a Charpy Pendulum Testing Machine, which is a low-cost tool designed for the academic environment. The tool has been developed to be used in laboratories that perform mechanical tests of impact and also as a result of an important partnership between students and researchers from UMC and EPUSP.
This paper deals with concepts about the electromyographic signal (EMG), which is a record of action potentials presented by the muscles, and presents the development of a low-cost conditioning circuit for electromyographic signals, including component blocks capable of signal processing and adaptation for microcontrolling devices.
Energy consumption in Wireless Sensor Networks is an important issue, as in many applications replacing batteries is not a viable task. Therefore, it is essential to understand and quantify the amount of energy consumed by each task performed by motes in a network and hence make the best use of the energy available. In this paper, we present a numerical analysis of how the lifetimes of Wireless Sensor...
According to industry predictions, by 2020 there will be a plethora of heterogeneous devices connected in the so-called Internet of Things (IoT). There are still many open problems in the field and this article represents the beginning of a research on the suitability of a functional language, Elixir, for building IoT software. Elixir runs on the Erlang Virtual Machine, initially built to run highly...
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