São Paulo Federal Institute of Education, Science and Technology

About: São Paulo Federal Institute of Education, Science and Technology is a education organization based out in São Paulo, Brazil. It is known for research contribution in the topics: Context (language use) & Computer science. The organization has 1707 authors who have published 2374 publications receiving 11333 citations.

Combining cell phones and WSNs for preventing accidents in smart-homes with disabled people

Abstract: Smart homes provide automatic services through a combination of wireless sensor networks (WSNs) and wireless devices that allow monitoring operations in the home These smart homes have been increasingly studied not only by the academic community but also by industry on account of the great potential they have, especially in applications that can help people with some type of physical disability such as visual or hearing impairment This kind of application can give them independence and make their lives safer and more comfortable Thus, in this paper we propose a Health Smart Home system for disabled people that can warn them about possible accidents that can occur in a particular location of their house In other words, the system anticipates possible accidents that may occur somewhere in the house We implemented a preliminary prototype that monitors rooms and issues a warning whenever it detects a potential hazard Our proposal relies on low-cost cutting-edge technology and includes the following: Raspberry Pi boards, motion sensors, cameras and a central server The server will handle the data that has been captured by sensors and send warnings through smartphones to people with physical impairments

Surface dynamics, equilibrium points and individual lobes of the Kuiper Belt object (486958) Arrokoth

Abstract: The New Horizons space probe led the first close flyby of one of the most primordial and distant objects left over from the formation of the solar system, the contact binary Kuiper Belt object (486958) Arrokoth, which is composed of two progenitors, the lobes nicknamed Ultima and Thule. In the current work, we investigated Arrokoth's surface in detail to identify the location of equilibrium points and also explore each lobe's individual dynamic features. We assume Arrokoth's irregular shape as a homogeneous polyhedra contact binary. We numerically explore its dynamic characteristics by computing its irregular binary geopotential to study its quantities, such as geometric height, oblateness, ellipticity, and zero-power curves. The stability of Arrokoth Hill was also explored through zero-velocity curves. Arrokoth's external equilibrium points have no radial symmetry due to its highly irregular shape. We identified even equilibrium points concerning its shape and spin rate: i.e., four unstable external equilibrium points and three inner equilibrium points, where two points are linearly stable, with an unstable central point that has a slight offset from its centroid. Moreover, the large and small lobes each have five equilibrium points with different topological structures from those found in Arrokoth. Our results also indicate that the equatorial region of Arrokoth's lobes is an unstable area due to the high rotation period, while its polar locations are stable resting sites for surface particles. Finally, the zero-power curves indicate the locations around Arrokoth where massless particles experience enhancing and receding orbital energy.

Improving Novice Programmers' Skills through Playability and Pattern Discovery: A Descriptive Study of a Game Building Workshop

Abstract: Game design and development has already been discussed as a viable, motivating alternative to introduce Computer Science concepts to young students. In this sense, it would be useful to obtain a deeper understanding of which skills could be developed in these activities and how such skills could be useful in future careers. This chapter presents the design and evaluation of a Game Building Workshop aimed at introducing the fundamentals of structured programming to students. The games produced by students during 12 weeks were evaluated and the results confronted with students’ questions and comments made along the workshop meetings and a final interview. The results indicate that students explored novel programming concepts in order to add features that were not initially planned for the proposed games. These additional features solve playability issues that are highly influential to the experience of the students as game players. Students also reused previously applied solutions to solve similar problems that appeared in subsequent activities. This is an indication that students developed or exercised analogy and abstraction skills during the workshop activities. Thiago Schumacher Barcelos Instituto Federal de Educação, Ciência e Tecnologia de São Paulo, Brazil & Universidade Cruzeiro do Sul, Brazil Roberto Muñoz Soto Universidad de Valparaíso – Escuela de Ingeniería Civil Informática, Chile Ismar Frango Silveira Universidade Cruzeiro do Sul, Brazil & Universidade Presbiteriana Mackenzie, Brazil DOI: 10.4018/978-1-4666-7363-2.ch055

Brazilian bee pollen: phenolic content, antioxidant properties and antimicrobial activity

Abstract: Bee pollen has been promoted as a dietary supplement for humans due to its nutritional and bioactive properties. Sixty-two samples of Apis mellifera dehydrated bee pollen collected in Brazil (eight...

An Effective Inverse Heat Transfer Procedure Based on Evolutionary Algorithms to Determine Cooling Conditions of a Steel Continuous Casting Machine

Abstract: The inverse modeling of heat transfer is a useful tool in analyzing contact heat transfer at the ingot surfaces during the continuous casting process. The determination of the boundary conditions involves an experimental work consisting in the evaluation of the thermal history, generally at the casting surface, experimentally provided by infrared pyrometers. Additionally, numerical simulations, based on the solution of the 2D transient heat conduction equation, are performed in order to be inversely solved in response to the measured thermal data furnished by the sensor. Due to computational time consumption during simulations in searching cooling conditions, this work proposes an interaction between natural inspired algorithms, called evolutionary algorithms, and the numerical model in order to speed up the searching process. The present work aims to compare three algorithms, namely genetic algorithm, improved stochastic ranking evolutionary strategy, and evolutionary strategy with Cauchy distribution. T...