Gallery — Two-column

Este artigo tem como objetivo relatar e detalhar a construção de um conversor buck-boost. Cuja a função deste é converter uma tensão cc (corrente contínua) de entrada, em outra tensão cc em sua saída, de valor mais elevado ou inferior dependendo de sua configuração. Destaca-se aqui o uso de um semi condutor MOSFET que funciona como uma chave controladora. Na elabiração deste está destacada o funcionamento, principais características e toda a parte de simulação e comprovação prática deste conversor.

The Author Kit for CVPR 2018.

Transferencia de calor en intercambiadores depasos múltiples

Physics being an experimental science, we sought to learn how to prepare a lab and perform as a team accounting for errors and uncertainties and to reduce them. We gathered values for volume using Micrometer, gathered information on acceleration, velocity, and created a histogram using a PASCO motion sensor. A jumping experiment was also performed with a human and the motion sensor. Our main goal was to test the effects of human error and eliminating mechanical error.

Se determinan las variables relacionadas con las operaciones de transferencia de calor en flujos laminares de forma experimental para un sistema agua/aceite en régimen estacionario. Estas variables son la tasa de transferencia de calor, diferencia logarítmica de temperatura media, el coeficiente global de transferencia de calor, los coeficientes de película dentro y fuera de los tubos, viendo el efecto de la velocidad del fluido en estas variables. Además se compara el perfil de temperatura de la disposición en contra-corriente, con la disposición en co-corriente. Al final se busca establecer la relación entre los números de Nusselt y Graetz en tuberías de sección circular.

The Two Column Style for CEUR-WS for the Data-Driven Gamification Design Workshop at Mindtrek 2017 - http://ceur-ws.org/HOWTOSUBMIT.html

This template implements all formatting specifications for the Hawaii International Conference on System Sciences 51 and has been approved for its use by the conference chairs.

Biometric refers to the automatic identification of a person based on his or her physiological and individual characteristics that can be easily verified. Among the featured measures of this system are face, fingerprint, speech recognition, retinal and signature etc. To fortify the actual presence of a real trait against a fake self-generated sample biometric system is used. In this research paper, the focus is laid on basic techniques for security system. Face recognition. In face recognition, facial recognition algorithms identify facial features by extracting landmarks, or features, from an image of the subject’s face. [1]We can apply it to the servo motors using train database and test database. If the data matches the train database, it sends the command to the servo motors which in turn will open the door. [2]The UI displays ACCESS ACCEPTED or ACCESS DENIED based on the recognition using test and trained databases.This system is implemented using MATLAB.

This paper presents a new entropy minimization criterion and corresponding algorithms that are used for both symbol timing and carrier frequency recovery for underwater acoustic receivers. It relies on the entropy estimation of the eye diagram and the constellation diagram of the received signal. During the parameter search, when perfect synchronization is achieved, the entropy will reach a global minimum, indicating the least intersymbol interference or a restored constellation diagram. Unlike other synchronization methods, this unified criterion can be used to build an all-in-one synchronizer with high accuracy. The feasibility of this method is proven using a theoretical analysis and supported by sea trial measurement data.