Fog System
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Assessment of Total Attenuation and Adaptive Scheme for Quality of Service Enhancement in Tropical Weather for Satellite Networks and 5G Applications in Nigeria
Abstract The dynamic weather condition is a major concern for optimum channel utilization in recent times, especially at higher frequencies with larger bandwidth for 5G applications. Over the years, rain-induced attenuation among the hydrometeors has been linked as the major cause of signal impairment especially at the frequency, f ≥ 10 GHz. However, when
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-06
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2. Application of Artificial Neural Networks for Fog Forecast
ABSTRACT: This study examines the development of a system that assists in planning flight activities of the Academia da Força Aérea (AFA) so that meteorological data can be used to predict the occurrence of fog. This system was developed in MATLAB 8.0 by applying multilayer perceptron-type artificial neural networks and using an error correction algorithm
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
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3. SIMULATION AND DEVELOPMENT OF A FREE-SPACE OPTICS IN RIO DE JANEIRO AND RELATIONSHIP WITH ITU-T G.826 / SIMULAÇÃO E DESENVOLVIMENTO DE UM ENLACE DE FREE-SPACE OPTICS NO RIO DE JANEIRO E A RELAÇÃO COM A ITU-T G.826
Very few works had been developed in Brazil, dealing with Free-Space Optics (FSO). In this arrangement, a laser beam carries information for a short range (up to 3-4 km), avoiding the use of optical fiber. FSO is a rapidly-improved solution and very economical, specifically in urban areas. In this work a FSO system operating in Rio is described. This work pr
Publicado em: 2005
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4. Contribution to the study of base-plus-fog densities assessed from radiographic films in roller and nonroller machines / Contribuição para o estudo das densidades base e velamento de diferentes filmes radiográficos submetidos aos processamentos automáticos Roller e Nonroller
Objectives: To compare base-plus-fog densities of four radiographic films: Ultra-speed, D-Speed; E-Speed and Insight (Eastman Kodak Company, Rochester, USA) using roller and nonroller machines. Methods: Comparative table was constructed for four films using two different processing conditions and the same processing solution (Kodak Readymatic). All films wer
Publicado em: 2004
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5. Cobertura de fibrocimento e sistema de climatização: influência no desempenho de vitelos mestiços e da raça Holandesa. / Fibrocement roofing tiles and cooling system: influence on performance of crossbreed and holstein veals.
O objetivo deste estudo foi avaliar a influência de telhas de fibrocimento sem amianto e sistema de climatização, sobre a produção de vitelos mestiços e da raça holandesa. O experimento foi realizado de agosto de 2002 a março de 2003. Foram utilizados 16 animais mestiços Gir x Holandês, sem grau de sangue definido, e 11 animais da raça Holandês,
Publicado em: 2004
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6. METROLOGICAL EVALUATION OF OPTICAL EMITTERS AND DETECTORS APPLIED TO THE CHARACTERIZATION OF ATMOSPHERIC PARTICULATES POLLUTANTS / AVALIAÇÃO METROLÓGICA DE EMISSORES E DETECTORES ÓPTICOS APLICADOS À CARACTERIZAÇÃO DE POLUENTES PARTICULADOS ATMOSFÉRICOS
The atmospheric pollution is a latent world-wide problem, and it is harmful to the health, visibility and climate. For these factors, several studies and researches have been developed to characterize the chemical composition of the pollutants, concentration, size of particles, etc, with the objective of constructing adjusted instruments for the control of t
Publicado em: 2003
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7. Evaluation of fog and handling curtains to reduce air tempertaure in a plastic greenhouse. / Avaliação da nebulização e abertura de cortinas na redução da temperatura do ar em ambiente protegido.
The objective of this study was to evaluate different managements, such as fog and handling curtains, to reduce air temperature in a plastic greenhouse. The experiment was conducted in two plastic greenhouses installed in an East-West direction and located at the Department of Rural Engineering, "Escola Superior de Agricultura Luiz de Queiroz", University of
Publicado em: 2001
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8. FOG-2: A novel GATA-family cofactor related to multitype zinc-finger proteins Friend of GATA-1 and U-shaped
GATA factors are transcriptional regulatory proteins that play critical roles in the differentiation of multiple cell types in both vertebrates and invertebrates. Recent evidence suggests that the biological activities of both mammalian and Drosophila GATA factors are controlled in part by physical interaction with multitype zinc-finger proteins, Friend of G
The National Academy of Sciences.
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9. A RADIO SYSTEM FOR BLIND LANDING OF AIRCRAFT IN FOG