For over ten years the Western Basin of Lake Erie has been plagued by significant harmful algal blooms (HABs). Lake Erie is a body of water situated between the United States of America (USA) and Canada. The lake provides water to approximately 40 million people and is a considerable source of economic value. The Western Basin of Lake Erie is highly prone to HABs due to the shallow depth and large phosphorus (P) loads received from the large area of agricultural land surrounding the lake and its tributaries. HABs cause extensive ecosystem degradation, have multiple negative health impacts, and cause significant economic losses for the tourism and fishery industries. Five products with P load reducing properties from the three nutrient control categories (biological, physical, and chemical) were chosen to determine how effective their P load reduction pathways were. Additionally, these products were analyzed to determine if they could generate positive remediation effects on the Lake Erie HAB. Of these five products, the technologies Water 3.0 and PO4 Sponge were applied to a Western Basin HAB model generated using the Stella Professional software from ISEE Systems. The two products were modeled individually and collectively to compare the application effects on the HAB model. The model results illustrate the significant reduction in P load and HAB extent that the application of these products at wastewater treatment plants (WWTPs) and within waterways could have. The application of both products at multiple locations within the model showed the greatest P load reduction and nearly eliminated the HAB extent. Unfortunately, the residual P from extensive historical P loading into the lake would prevent such a significant reduction from occurring for over a decade. Current practices and regulations in the Lake Erie Basin are not stimulating P load reductions significant enough to remediate the HAB. As the Western Basin HAB continues to occur annually, the waste stream produced by the HAB remains unutilized. Implementing new and innovative technologies in the basin can generate high quality commodity streams out of the wasted biological algal matter. Meanwhile the implementation of new technologies and practices can help reduce the HAB to a smaller size that would have smaller negative impacts to the economy, health, and ecology.

This thesis has two parts. In the first part there is described an optimal methodological process for screening tests used in subsequently. Fertilized fish eggs of Oryzias latipes were incubated in 6 tests with different numbers (from 1 to 6) with standard conditions in ISO water. In the tests, hatching performance and duration of embryonic development were investigated and the results were applied on screening tests. The other part of the thesis is aimed on the proof of potential toxic effects of water with cyanobacterial water bloom. The fertilized eggs of Oryzias latipes were embedded into the test in stage 6 to 8. Three samples of cyanobacterial biomass from free waterbodies with known species composition and microcystin {--} LR, YR and RR contents were tested. The hatching performance, duration of embryonic development, lethal and sublethal effects were monitored during the tests. The tests were performed according to the OECD 212. There were detected significant differences in hatching performance, duration of embryonic development and in some cases also in induction of deformities between the control group and the tested groups.

A Lagoa dos Patos (LP) é um dos ambientes oticamente complexos mais bem estudados no Brasil, e sua grande abrangência espacial, permite a união de diferentes medidas in situ com produtos de sensoriamento remoto, sendo possível entender melhor como os componentes óticos da água influenciam na sua cor. Florações de fitoplâncton possuem grande relevância ecológica e econômica, sendo o desenvolvimento de metologias simples para o seu monitoramento de vital importância. O presente trabalho utilizou produtos de coloração do oceano de imagens diárias dos sensores MODIS/Aqua e SeaWiFS durante os anos de 2002-2005, dados de modelos meteorológicos de reanálise para precipitação e velocidade do vento e dados de clorofila-a e salinidade obtidos in situ. Foi identificado que o espectro de reflectância de sensoriamento remoto é controlado pelo regime de El Niño e La Niña, variação intra anual e espacial (p<0.05), sendo a cor da água da LP em geral, característica de ambientes com alta concentração de CDOM/sedimentos ou de domínio misto. Partindo do pressuposto que o fitoplâncton domina o coeficiente de absorção da luz durante florações de fitoplâncton, e que as possíveis florações na LP se restringem a diatomáceas e cianobactérias, foi desenvolvido um modelo de classificação para discriminar a ocorrência desses eventos. O modelo proposto permite a classificação de águas oticamente complexas de acordo com o componente ótico predominante, e é pioneiro na exploração de dados do sensor MODIS/Aqua para detecção de florações de fitoplâncton em um ambiente lagunar / Patos Lagoon (PL) is one of the optical complex environment best studied in Brazil, and it large spatial extent, allows the union of different in situ and remote sensing measures, enabling a better understandment of how the optical components in water can influence its color. Phytoplankton blooms have great ecological and economic relevance, and the development of simple methodologies for your monitoring of vital importance. The present work used ocean color products from daily MODIS/Aqua and SeaWiFS images during the years 2002-2005, meteorological model data for precipitation and wind speed and chlorophyll-a and sailinity data obtained in situ. It was detected that remote sensing reflectance spectra is controlled by the regime of El Niño and La Niña, intra annual and spatial changes (p<0.05), ande the water color from PL in general, characteristic of environments with high CDOM/sediments concentration or with mixed domain. Assuming that the phytoplankton dominate light absorption coefficient during phytoplankton blooms, and that PL possible blooms are restricted to diatom and cyanobacteria, a classification model was developed to discriminate the occurance of those events. The proposed model allows for the classification of optically complex waters according to the predominant optical component, and it is pioneer in the exploration of data from MODIS/Aqua sensor to detect phytoplankton blooms in lagunar environment

Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-05-25T19:38:55Z No. of bitstreams: 1 izabelatalitadesales.pdf: 2502791 bytes, checksum: 3618911906870c6fe7742fdf73942d7f (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-05-26T13:09:55Z (GMT) No. of bitstreams: 1 izabelatalitadesales.pdf: 2502791 bytes, checksum: 3618911906870c6fe7742fdf73942d7f (MD5) / Made available in DSpace on 2017-05-26T13:09:55Z (GMT). No. of bitstreams: 1 izabelatalitadesales.pdf: 2502791 bytes, checksum: 3618911906870c6fe7742fdf73942d7f (MD5) Previous issue date: 2017-02-21 / O presente trabalho apresenta a descrição do desenvolvimento e aplicação de uma Sequencia Didática abordando tópicos de Termodinâmica. O estudo foi realizado com duas turmas do 2ª ano do Ensino Médio de uma escola estadual localizada no município de Juiz de Fora, Minas Gerais. A Sequência Didática foi elaborada baseada nos aspectos teóricos da Aprendizagem Significativa de David Ausubel. Utilizamos a Taxonomia de Bloom como instrumento na identificação e declaração dos objetivos mobilizados no desenvolvimento cognitivo do aluno, servindo de norteador em nosso planejamento de todo o processo de ensino. A Sequência Didática incorpora atividades investigativas experimentais, textos relacionando Física com fatos cotidianos, análises e interpretação de diversas formas de linguagens visando alcançar dimensões cognitivas mais altas. A análise das atividades ao longo da aplicação da Sequencia Didática mostrou bons resultados: os alunos manifestaram maior interesse e motivação em aprender, tornando-se mais participativos e ativos em sua aprendizagem. Concluímos que a diversidade de atividades desenvolvidas durante o processo de ensino, especialmente as experimentais e em grupo, possibilita o alcance dos processos cognitivos mais altos. / The present work is an account of the application of a Didactic Sequence addressing topics of Thermodynamics. The study was carried out with two High School classes of a public state school located in the city of Juiz de Fora, Minas Gerais. The Didactic Sequence was elaborated based on the theoretical framework of the Meaningful Learning of David Ausubel. We used Bloom's Taxonomy as an instrument in the identification and declaration of the objectives mobilized in the student's cognitive development, serving as a guide in our planning of the whole teaching process. The Didactic Sequence incorporates experimental investigative activities, texts relating physics with everyday phenomena, analysis and interpretation of various forms of languages in order to reach higher complex cognitive dimensions. The analysis of the activities along the application of the Didactic Sequence showed good results: the students expressed greater interest and motivation in learning, becoming more participative and active in their learning. We conclude that the diversity of activities developed during the teaching process, especially the experimental ones and group work, is more likely to enable higher cognitive processes to be achieved.

This study analyses readings and interpretations of the satanic figure in John Milton´s epic Paradise Lost. The study highlights positions from the literature debate about Satan, the main character, and analyses interpretations of Milton´s Satan in order to investigate the critical positions about the relation between text and interpretation. The study has a meta-perspective and analyses the character of Satan in relation to the two main positions that have occupied the debate. The central question for this study is the role of the satanic figure in Paradise Lost. Have the critics read him as a tragic hero or is he being portrayed as the embodiment of evil? By reading which strategies have been used for interpretation by critics in order to come to conclusions about Satan, I have also shown what views exist concerning literary texts and character presentation. The result shows two clear traditions, satanists and anti-satanists, the former interpreting Satan as a positive character and the latter viewing him as a negative one. This study has shown that the debate concerning Satan has touched upon a wide spectrum of subjects where questions concerning authority, revolt and the closeness/distance to a text has been part of the interpretations. The satanic figure has at the same time shown to be an ambivalent 'round' character which makes simple interpretations of him more difficult.

Orientador: Regilene A. Sarzi Ribeiro / Resumo: Essa pesquisa apresenta um estudo sobre o ensino da arte através da imagem e suas proposições reflexivas referentes à sua produção e repercussão no contexto educacional e cultural. A partir de um estudo sobre a fotografia, como meio provocador crítico-sensível, ressalta-se a importância da compreensão de abordagens metodológicas que são propulsoras de reflexões, no processo ensino-aprendizagem das artes visuais. Também problematiza a questão de como o ensino, mediado pela imagem, pode gerar processos e produtos capazes de provocar a transformação do pensamento sobre a realidade tecnológica em que vivemos. Tem como objetivo evidenciar a relevância de um ensino de arte mediado pela imagem tecnológica tornando consciente os processos de acesso e produção midiática na sociedade contemporânea, promovendo a mediação tecnológica crítica a partir de um aprofundamento do conhecimento sobre as relações de produção artística mediado pela tecnologia. A metodologia desenvolvida foi o levantamento bibliográfico sobre os temas interdisciplinares, além da pesquisa participante e pesquisa-ação. Também foram utilizadas as abordagens metodológicas do Project Zero de Harvard, como o Teaching for Understanding e o Artful Thinking. A análise da coleta de dados foi realizada a partir do desenvolvimento do projeto educacional fotográfico, contendo aulas e práticas reflexivas e fotográficas, além de um questionário final, que resultou em um relato de experiência. Os principais resultados apresentados... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This research is a study about Arts teaching through image and its reflective propositions regarding its production and broadcast inside cultural and educational contexts. Analysis of photography as a provocative and critical sensitive medium highlights the importance of understanding methodological approaches that might trigger reflections in visual arts teaching and learning processes. It also problematizes the issue of how teaching through image might generate processes and products able to provoke transformation of thoughts about the technological reality we live in. It aims to put into evidence the relevance of art teaching process through technological images, bringing to consciousness the processes of access to media and its production in today’s society, promoting critical technological mediation triggered by deepening knowledge about the relations between artistic production and technology. The chosen methodology was bibliographic research about interdisciplinary themes, besides participative research and action research. Harvard’s Project Zero’s methodological approaches have also been used, such as Teaching for Understanding and Artful Thinking. Data analysis was collected from the educational project based on photography development, with lessons and reflective practices and also photography, besides a final survey, which resulted in a case report. The main results achieved show the relevance of art teaching through image and improved by reflective practices about... (Complete abstract click electronic access below) / Mestre

No description available.

Networking technology is connecting more and more people around the world. It has become an essential part of our daily life. For this connectivity to be seamless, networks need to be fast. Nonetheless, rapid growth in network traffic and variety of communication protocols overwhelms the Central Processing Units (CPUs) processing packets in the networks. Existing solutions to this problem such as ASIC, FPGA, NPU, and TOE are not cost effective and easy to manage because they require special hardware and custom configurations. This thesis approaches the problem differently by offloading the network processing to off-the-shelf Graphic Processing Units (GPUs). The thesis's primary goal is to find out how the GPUs should be used for the offloading. The thesis follows the case study approach and the selected case studies are layer 2 Bloom filter forwarding and flow lookup in Openflow switch. Implementation alternatives and evaluation methodology are proposed for both of the case studies. Then, the prototype implementation for comparing between traditional CPU-only and GPU-offloading approach is developed and evaluated. The primary findings from this work are criteria of network processing functions suitable for GPU offloading and tradeoffs involved. The criteria are no inter-packet dependency, similar processing flows for all packets, and within-packet parallel processing opportunity. This offloading trades higher latency and memory consumption for higher throughput. / Nätverksteknik ansluter fler och fler människor runt om i världen. Det har blivit en viktig del av vårt dagliga liv. För att denna anslutning skall vara sömlös, måste nätet vara snabbt. Den snabba tillväxten i nätverkstrafiken och olika kommunikationsprotokoll sätter stora krav på processorer som hanterar all trafik. Befintliga lösningar på detta problem, t.ex. ASIC, FPGA, NPU, och TOE är varken kostnadseffektivt eller lätta att hantera, eftersom de kräver speciell hårdvara och anpassade konfigurationer. Denna avhandling angriper problemet på ett annat sätt genom att avlasta nätverks processningen till grafikprocessorer som sitter i vanliga pc-grafikkort. Avhandlingen främsta mål är att ta reda på hur GPU bör användas för detta. Avhandlingen följer fallstudie modell och de valda fallen är lager 2 Bloom filter forwardering och ``flow lookup'' i Openflow switch. Implementerings alternativ och utvärderingsmetodik föreslås för både fallstudierna. Sedan utvecklas och utvärderas en prototyp för att jämföra mellan traditionell CPU- och GPU-offload. Det primära resultatet från detta arbete utgör kriterier för nätvärksprocessfunktioner lämpade för GPU offload och vilka kompromisser som måste göras. Kriterier är inget inter-paket beroende, liknande processflöde för alla paket. och möjlighet att köra fler processer på ett paket paralellt. GPU offloading ger ökad fördröjning och minneskonsumption till förmån för högre troughput.

This study describes the developmental movement of kindergarten children from oral language toward written communication. The study describes and documents evidence of a sample of kindergarten children as they interact with print concepts in a kindergarten environment. The subjects were thirty kindergarten students randomly selected from three specific kindergartens identified as implementing the Key Vocabulary approach of Sylvia Ashton-Warner. The classrooms were public school kindergartens located in a suburban area of North Central Texas. From the findings several conclusions can be drawn. The learning of kindergarten children can be documented and a profile of that learning can be developed that will have possible future use in the learning career of the child. Kindergarten children may perceive the reading of a story to the group differently from the teacher. The perception of the process of writing by kindergarten children may be different from that of adults. There was evidence of children's writing in their movement from oral language toward print.

No description available.