A educação financeira possibilita que os cidadãos passem por processos de aprendizagem que os levem a realizar compras conscientes e aprendam a gerir suas rendas, evitando gastos desnecessários, e estimulando ao consumo consciente e saudável, já o baixo nível de conhecimento em finanças pode contribuir para que, no ato do consumo, os indivíduos se comprometam com decisões e compromissos financeiros levando ao endividamento. Diante da necessidade de formar cidadãos conscientes financeiramente, principalmente entre a juventude, a presente pesquisa visa conhecer se o nível de educação financeira de jovens exerce influência em seu processo de decisão de compra, tomando como base estudantes do 1º e 2º ano do ensino médio em escolas públicas de cidade de Porto Velho, capital do estado de Rondônia, através de suas tomadas de decisões financeiras em situações cotidianas. A fundamentação teórica baseou-se nos estudos de Kahneman e Tversky, denominado Teoria de Perspectiva e nas pesquisas da OCDE. A pesquisa caracterizou-se como aplicada, descritiva, com abordagem quali-quantitativa, sendo delineada através de um levantamento do tipo Survey, através de uma amostra, do tipo não probabilística, e para a coleta dos dados foi utilizado questionário eletrônico elaborado na plataforma Google Forms. O presente estudo possibilitou compreender que os estudantes possuem níveis baixos de conhecimento sobre educação financeira, porém apresentam decisões conscientes sobre os casos cotidianos. Destaca-se, que o ambiente escolar não propaga assuntos voltados a finanças pessoais, contudo, o ambiente familiar é um impulsionador dessa temática.
This article proposes a sustainable way to generate electricity for isolated communities in the Western Amazon, using vegetable oil, heated in a heating tank, as a fuel to diesel cycle generators. Vegetable oil under high temperatures reaches a viscosity like diesel oil and does not cause damage to the generator's starting and fuel injection systems. Through mathematical and computational models, it is possible to control the temperature and the oil viscosity through sensors to reach a complete combustion of the fuel. All of this contribute to the development of the population of isolated communities that suffer without access to electricity.
This article presents a methodology for two-dimensional modeling of the human eye to analyze the heat transfer in biological tissues, in this case, ocular tissues. The technique used was the finite differences method in the time domain. With a proposal for a numerical simulation of the problem, see that this type of work aims to promote the development of tools that help detect errors in biomedical engineering. Several medical procedures, including surgical ones that use laser, whose main limiting factor is the increase in temperature in living tissue, a fact that can cause irreversible damage, even evaporating. For example, refractive eye surgery using a laser. The simulation is intended to calculate the temperature gradient to guide the physician more precisely before an intervention. An example of this is certain types of inoperable tumors that can be irradiated with laser sources. Their function is to cause a rise in local temperature to destroy cancer cells without thermal damage to the healthy region.
The stability of soil aggregates is an important physical parameter as it mainly influences the flow of water and air in the soil. In this sence, the research aimed to determine the stability aggregates index in six representative soil classes in the Paraíba State-Brazil at different stages of pedological development. The soil classes analyzed is localized on the Microregions of the Curimataú Occidental (Ferrasol, Planosol, Leptosol, Arenosol) and Brejo Paraibano (Acrisol, Lixisol), on the Paraíba state, Brazil. At depths of 0-5 cm, 5-10 cm and 10-20 cm was collected three undeformed soil samples were collected per mini trench (one per depth), making a total of 15 samples per soil class and 90 total samples. In each soil class was analysed: chemical parameters, granulometrics parameters, stability of agregates, Weighted average diameter via wet sieving (DMPAu) and Weighted average diameter via dry sieving (DMPAs); agregate stability index (IEA). For the conditions that research was developed can conclude that: The IEA values tended to increase with clay contents in all soil classes; Among the less developed soils, the IEA values were better in the Planosol soil, denoting that there is a probable relationship with the low contents of K, Na and Al; In the more developed soils, the high values of Na and Al may have contributed to the lower IEA in the PVd, while the lower values may have contributed to the higher IEA in Ferrasol and Lixisol soils.
This article presents the intelligent multifunctional protection (IR) relay for systems based on synchronous generators using a paraconsistent neural network. This network woks with degrees of favorable, unfavorable evidence, sensitivity and time. The IR includes islanding, fault detection, fault type recognition and selective fault blocking. The proposed multi-function APL4v IR was tested in a hardware-in-the-loop (HIL) environment. The results show that the proposed IR is superior to the traditional islanding recognition methods regarding reliability, safety and detection time.
This article presents the development of a vertical hydraulic turbine combined with an electric generator, developed inside its own rotor. For energy use of the amount of movement of water flows of any nature, whether artesian wells with positive pressure, sewage water flows, domestic distribution water flows, river beds, channels, and others. Regardless of the existing pressure level or whether the water flow is continuous or not. If there is full energy use of any laminar and / or turbulent water flow, according to the dynamics of the fluids, this water flow goes through the rotor, which is cylindrical and is in line as a generator that is coupled the turbine. The vertical hydraulic turbine proposed in this article is compact, robust and low cost. One of humanity's greatest challenges is finding solutions to the growing scarcity of drinking water. The vertical hydraulic turbine is an alternative technology for the use of water.
The learning of phenomena related to electromagnetic waves develops in an evident way when students are stimulated significantly and, one of the possible ways are contextualized experimental practices. In this way, a system was developed that allows the sending and reception of electromagnetic waves, which can be provided by a signal generator or by a transmitting radio. For the implementation of the system, two Yagi-Uda antennas were built, intended for the transmission and reception of signals; for the emission of signals a low-power transmitter radio and for the measurement of the intensity of the received signals, a signal intensity meter was constructed from a multimeter in which a circuit was added that converts the signals received into direct current proportional to their intensity. The system was used in the physics discipline of high school, where it was observed that using this system, the students presented a better understanding of the phenomena related to electromagnetic waves.
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