Computação desplugada: atividade lúdica para desenvolver o pensamento computacional / Displaced computing: logical activity to develop computer thinking

A ação descrita neste relato foi desenvolvida como parte de um projeto vinculado ao PEIC-2018 da Universidade Federal de Uberlândia. Teve como objetivo incentivar o Pensamento Computacional de alunos do sétimo, oitavo e nono anos do ensino fundamental II de uma escola particular da cidade de Ituiutaba-MG. Duas abordagens foram adotadas nesta ação: a primeira, denominada computação desplugada, utilizou materiais de uso comum no ambiente escolar, enquanto a segunda utilizou o computador. Verificou-se que, na abordagem desplugada, os alunos mantiveram-se mais focados na ação do que quando utilizaram o computador

Computação desplugada: atividade lúdica para desenvolver o pensamento computacional / Displaced computing: logical activity to develop computer thinking

A ação descrita neste relato foi desenvolvida como parte de um projeto vinculado ao PEIC-2018 da Universidade Federal de Uberlândia. Teve como objetivo incentivar o Pensamento Computacional de alunos do sétimo, oitavo e nono anos do ensino fundamental II de uma escola particular da cidade de Ituiutaba-MG. Duas abordagens foram adotadas nesta ação: a primeira, denominada computação desplugada, utilizou materiais de uso comum no ambiente escolar, enquanto a segunda utilizou o computador. Verificou-se que, na abordagem desplugada, os alunos mantiveram-se mais focados na ação do que quando utilizaram o computador

Lidar Observations in South America. Part I - Mesosphere and Stratosphere

South America covers a large area of the globe and plays a fundamental function in its climate change, geographical features, and natural resources. However, it still is a developing area, and natural resource management and energy production are far from a sustainable framework, impacting the air quality of the area and needs much improvement in monitoring. There are significant activities regarding laser remote sensing of the atmosphere at different levels for different purposes. Among these activities, we can mention the mesospheric probing of sodium measurements and stratospheric monitoring of ozone, and the study of wind and gravity waves. Some of these activities are long-lasting and count on the support from the Latin American Lidar Network (LALINET). We intend to pinpoint the most significant scientific achievements and show the potential of carrying out remote sensing activities in the continent and show its correlations with other earth science connections and synergies. In Part I of this chapter, we will present an overview and significant results of lidar observations in the mesosphere and stratosphere. Part II will be dedicated to tropospheric observations

Lidar Observations in South America. Part II - Troposphere

In Part II of this chapter, we intend to show the significant advances and results concerning aerosols’ tropospheric monitoring in South America. The tropospheric lidar monitoring is also supported by the Latin American Lidar Network (LALINET). It is concerned about aerosols originating from urban pollution, biomass burning, desert dust, sea spray, and other primary sources. Cloud studies and their impact on radiative transfer using tropospheric lidar measurements are also presented

Equação mestra não-linear aplicada ao estudo de bioestabilidade óptica.

In this dissertation, we present a generalized master equation for a system of N two- level atoms pumped by a classical field, interacting with a reservoir. The kinds of reservoirs are assumed: (a) thermal, (b) squeezed vacuum. A master equation for the system was derived under Born and Markov approximations. The mean ¯eld approximation is done for the many-body system, so we obtain a non-linear master equation for a representative atom of the system . We discuss the optical bistable behavior of the output field, and analyze how much this phenomenon is sensitive to the number of atoms, the atom-reservoir coupling and to the parameters of de reservoir.Financiadora de Estudos e ProjetosNesta dissertação, apresentamos uma equação mestra generalizada para um sistema constituído de N átomos de dois níveis bombeados por um campo clássico, interagindo com um reservatório. O tipo do reservatório pode ser: (a) térmico, (b) vácuo comprimido. Uma equação mestra foi deduzida, para o sistema, nas aproximações de Born e Markov. A aproximação de campo médio é feita para o sistema de muitos corpos, desta maneira obtemos uma equação mestra não linear para um átomo representativo do sistema. Discutimos o comportamento ópitico biestável do campo de saída, e analisamos o quanto este fenômeno é sensível ao número de átomos, ao tipo de acoplamento átomo-reservatório e aos parámentros do reservatório

Influence of a Biomass-Burning Event in PM2.5 Concentration and Air Quality: A Case Study in the Metropolitan Area of São Paulo

Severe biomass burning (BB) events have become increasingly common in South America in the last few years, mainly due to the high number of wildfires observed recently. Such incidents can negatively influence the air quality index associated with PM2.5 (particulate matter, which is harmful to human health). A study performed in the Metropolitan Area of São Paulo (MASP) took place on selected days of July 2019, evaluated the influence of a BB event on air quality. Use of combined remote sensing, a surface monitoring system and data modeling and enabled detection of the BB plume arrival (light detection and ranging (lidar) ratio of (50 ± 34) sr at 532 nm, and (72 ± 45) sr at 355 nm) and how it affected the Ångström exponent (>1.3), atmospheric optical depth (>0.7), PM2.5 concentrations (>25 µg.m−3), and air quality classification. The utilization of high-order statistical moments, obtained from elastic lidar, provided a new way to observe the entrainment process, allowing understanding of how a decoupled aerosol layer influences the local urban area. This new novel approach enables a lidar system to obtain the same results as a more complex set of instruments and verify how BB events contribute from air masses aloft towards near ground ones

Lalinet Network Status

LALINET (Latin American Lidar Network) follows its goal to consolidation as a federative lidar network to provide regional coverage over Latin America in providing aerosol and greenhouse gas profiles following QA/QC protocols and promoting the development of researchers and students in atmopheric science field. We show recent results on different approaches for studying the optical properties of the atmosphere regarding aerosols at tropospheric and stratospheric level and greenhouse gas mixing ratio profiles followed by our recent support and validation efforts towards present and future satellite missions

Lalinet Network Status

LALINET (Latin American Lidar Network) follows its goal to consolidation as a federative lidar network to provide regional coverage over Latin America in providing aerosol and greenhouse gas profiles following QA/QC protocols and promoting the development of researchers and students in atmopheric science field. We show recent results on different approaches for studying the optical properties of the atmosphere regarding aerosols at tropospheric and stratospheric level and greenhouse gas mixing ratio profiles followed by our recent support and validation efforts towards present and future satellite missions