This paper summarizes an experience with Harvey Mudd Clinic developing a plugin for Unity that allows users to more easily reduce the polygon count and thereby load time of a model in an AR/VR experience. The project focused on UI design and flexible code architecture.

Brazilian sawn wood exports of tropical species between 2006 and 2011 was over 1.4 billion kilograms and generated a profit of more than US$1.08 billion. Researchers are concerned over regulation of forest tree seed trade. Therefore, were conducted a research to verify seed quality through secure and robust analysis methods aimed at evaluating normal and abnormal seedling sand dead seeds from the validation process for the germination analysis of six forest tree species. Pre - germination tests with species Anadenanthera macrocarpa, Cedrela fissilis, Cedrela odorata, Handroanthus impetiginosus, Peltophorum dubium and Schizolobium parahyba var. amazonicum were conducted in order to establish protocols based on samples of different quality (high, medium and low quality). Seeds were sent to at least six laboratories approved by the Ministry of Agriculture, Livestock and Supply (MAPA) to execute the analysis of germination repeating the protocol method. The standard ISTA procedure was used for statistical analysis of seed germination (normal seedlings): outliers on variances; effects of labs and lots (ANOVA); average test for batch and laboratory (Tukey), repeatability, reproducibility, accuracy and robustness (Mandel h and k statistics). From these tests, effects of labs and lots and repeatability and reproducibility were done to check for abnormalities in seedlings. The dead seeds were observed in graphic scheme. Abnormal seedlings and dead seeds had discrepant results between and within laboratories. The abnormality result is probably due to the difficulty of the analyst to distinguish this characteristic and the dead seed result is probably due to heterogeneity within the plot itself and genetic and environmental variability. However, the methods proposed for testing the seeds of the six species were validated because they presented themselves precise, accurate and robust. / A exportação brasileira de madeira serrada de espécies tropicais entre 2006 e 2011 foi mais de 1,4 bilhões de quilogramas e o lucro, superior a US$ 1,08 bilhões. A preocupação de pesquisadores em regularizar o comércio de sementes de espécies florestais conduzindo pesquisas que informem a qualidade das sementes por meio de métodos de análise seguros e robustos objetivou a avaliação de plântulas normais, anormais e de sementes mortas do processo de validação para a análise da germinação de seis espécies. Pré-testes de germinação com as espécies Anadenanthera macrocarpa, Cedrela fissilis, Cedrela odorata, Handroanthus impetiginosus, Peltophorum dubium e Schizolobium parahyba var. amazonicum foram conduzidos com a finalidade de estabelecer protocolos com base em amostras de qualidade distintas (alta, intermediária e baixa qualidades). As sementes foram enviadas para, no mínimo, seis laboratórios credenciados ao Ministério da Agricultura Pecuária e Abastecimento (MAPA), para que executassem a análise de germinação, repetindo o método do protocolo. O procedimento padrão da ISTA foi usado para análise estatística da germinação das sementes (plântulas normais): outliers nas variâncias; efeitos de laboratórios e lotes (Análise de variância); teste de médias para lote e laboratório (Tukey); repetitividade, reprodutibilidade, exatidão e robustez (estatísticas h e k de Mandel). Desses testes, efeitos dos laboratórios e lotes, e repetitividade e reprodutibilidade foram verificados para anormalidade em plântulas. As sementes mortas foram observadas em esquema gráfico. Plântulas anormais e sementes mortas tiveram resultados discrepantes entre e dentro de laboratórios. Provavelmente esse resultado para anormalidade se deva à dificuldade do analista em distinguir essa característica e em sementes mortas pela heterogeneidade dentro do próprio lote devido à variabilidade genética e ambiental. No entanto, os métodos propostos para teste das sementes das seis espécies foram validadas, pois apresentaram precisão, exatidão e robustez. / Mestre em Agronomia

Esta tese teve como objetivo o desenvolvimento de um Laboratório Virtual de Aprendizagem (LVA) - Hidrolândia e a avaliação do seu impacto em termos de aprendizagem, aplicado em disciplinas de mecânica dos fluidos e hidráulica, na graduação de cursos de Engenharia, no Instituto de Pesquisas Hidráulicas – IPH, da Universidade Federal do Rio Grande do Sul - UFRGS, onde existe laboratório experimental em escala em hidráulica. A pesquisa foi realizada através do uso do LVA, especialmente desenvolvido para as disciplinas de graduação em cursos de Engenharia. Um total de 414 alunos, pertencentes a três cursos de Engenharia, participaram da pesquisa, sendo esta desenvolvida no período de 2012/2 a 2015/1. O Hidrolândia permite a simulação de vários processos referentes a três práticas laboratoriais da disciplina: velocidade em canal, aferição de Venturi e esvaziamento de reservatório. A estrutura do LVA e a abordagem pedagógica adotada permitiram a interação dos alunos com diversos componentes do ensaio, alterando fatores e variáveis do laboratório virtual, viabilizando a repetição do experimento com novos parâmetros e a análise dos resultados imediatamente. Após o uso do LVA, os alunos responderam a um questionário, o qual permitiu uma avaliação qualitativa do uso do referido recurso tecnológico virtual, além de uma avaliação teórica de conhecimentos. Duas turmas foram mantidas como controle, não tendo realizado o LVA; porém, tendo realizado o teste teórico para posterior análise em relação aos alunos que realizaram o LVA. A base teórica que dá alicerce para este trabalho é a da aprendizagem significativa (meaningful learning), dentro de uma perspectiva construtivista, abordagem proposta principalmente por David Jonassen. A análise dos resultados estatísticos mostrou que houve uma grande aceitação do uso do LVA, manifestado pelos alunos no questionário de avaliação e um significativo ganho no processo de aprendizagem, na comparação das notas finais e dos testes de conhecimento. A nota média no teste de conhecimentos dos alunos que utilizaram o LVA foi significativamente superior aos que não o utilizaram. Foi estatisticamente comprovado que o perfil de conceitos dos alunos que utilizaram o laboratório virtual é diferente do perfil dos que não o utilizaram e, em função dos percentuais maiores em conceitos "A" e "B", a diferença é no sentido de aumentar o desempenho daqueles que o utilizaram. Assim sendo, a principal contribuição desta tese é o desenvolvimento do LVA Hidrolândia e uma metodologia para sua utilização que, comprovadamente, geram maiores ganhos de aprendizagem na área de mecânica dos fluidos e hidráulica, o desenvolvimento das simplificações das equações da mecânica dos fluidos, gerando os algoritmos utilizados nas simulações do LVA, o desenvolvimento do mundo virtual do laboratório físico real no IPH, bem como sua implementação em Action Script, que pode servir de referência para implementação de outros mundos virtuais; portanto, cumprindo com os objetivos propostos. / This thesis aimed to the development of a Virtual Learning Lab (AVL) - Hidrolândia, and the evaluation of its impact in terms of learning, applied in mechanical of fluids and hydraulics disciplines, in undergraduate engineering courses at the Hydraulic Research Institute - IPH, in at Federal University of Rio Grande do Sul - UFRGS, where there is experimental and real laboratory in hydraulics. The survey was conducted through the use of LVA specially developed for undergraduate courses in Engineering courses. A total of 414 students from three engineering courses, participated in the survey, which was carried out from 2012/2 to 2015/1. The Hidrolândia allows the simulation of various processes relating to three laboratory discipline practices: channel speed, Venturi gauging and tank emptying. The structure of the LVA and the pedagogical approach adopted allowed the interaction of students with various components of the test by changing factors and variables of virtual lab, making possible to repeat the experiment with new parameters and analyzing the results immediately. After using the LVA, the students answered a questionnaire, which allowed a qualitative evaluation of the use of that virtual technological resource, as well as a theoretical evaluation of knowledge. Two groups were kept as a control and had not made the LVA, but having done the theoretical test for further analysis regarding students who performed the LVA. The theoretical basis that gives foundation for this work is the significant learning (meaningful learning) within a constructivist perspective, approach proposed mainly by David Jonassen. The analysis of the statistical results showed that there was wide acceptance of the use of LVA, shown by students in the assessment questionnaire and a significant gain in the learning process, the comparison of endnotes and knowledge tests. The average score in the test of knowledge of the students who used the LVAH was significantly higher than those who did not use. It has been statistically proven that the profile concepts of students who used the virtual lab was different from the profile of those who did not use and, due to higher percentages in concepts "A" and "B", with increased performance those who used it. Therefore, the main contribution of this thesis is the development of LVA Hidrolândia and a methodology for its use that was proven to generate greater learning gains in the mechanical area of fluids and hydraulics, the development of the simplifications of the fluid mechanics equations, generating the algorithms used in the LVA simulations, the development of the virtual world to the physical laboratory at IPH and its implementation in Action Script, which can serve as a reference for the implementation of other virtual worlds; thus complying with the proposed objectives.

Dissertação(mestrado) - Universidade Federal do Rio Grande, Programa de Pós-Graduação em Oceanografia Física, Química e Geológica, Instituto de Oceanografia, 2005. / Submitted by Cristiane Silva (cristiane_gomides@hotmail.com) on 2013-01-28T13:00:22Z No. of bitstreams: 1 2005_Clarissa.pdf: 932306 bytes, checksum: d0a0723040516baf65fd6c7e051026cc (MD5) / Approved for entry into archive by Bruna Vieira(bruninha_vieira@ibest.com.br) on 2013-06-13T18:29:34Z (GMT) No. of bitstreams: 1 2005_Clarissa.pdf: 932306 bytes, checksum: d0a0723040516baf65fd6c7e051026cc (MD5) / Made available in DSpace on 2013-06-13T18:29:34Z (GMT). No. of bitstreams: 1 2005_Clarissa.pdf: 932306 bytes, checksum: d0a0723040516baf65fd6c7e051026cc (MD5) Previous issue date: 2005 / Levels and sources of hydrocarbons to Patos Lagoon and nearshore area were assessed analyzing 28 sediment and 3 mussel(Perna perna) samples. The sediments presented total hydrocarbon levels between 0.12 and 51.6 μg g-1 dry weight (dry wt) (n=18); total aliphatic hydrocarbons betw een 0.12 and 130.0 μg g-1 dry wt (n=28) and Σn-C 14-C35 between 0.01 and 15.0 μg g -1 dry wt (n=28). In general, these levels were lower than those found in other locations considered as heavily polluted. Most samples, in special those distant from the sources, presented a biogenic profile, characteristic from higher plant waxes and, in a less extent, from algae. Sediments with higher aliphatic hydrocarbons values and petrogenic profiles were associated to in puts from industrial and domestic effluents and shipping activities associated to the cities of Rio Grande and Porto Alegre and to the run off of the Lagoons drainage bas in. Petroleum biomarkers (terpanes and steranes) and linear alkyl-benzenes (LABs) analyzed in eight samples from the surrounding of Rio Grande city confirmed hydrocarbons contamination from oil usage (recent and weathered) and domestic efluents in the stations located in the main municipal sewage discharge, refinery and dry docking. The highest PAH levels (Σ24 PAHs) (41-11792 ng g-1 dry wt), which were st udied only in the area adjacent Rio Grande city, were in the same range as those found in other areas considered moderately to heavily contaminated. A petrogenic an d pyrolitic PAHs mixture is present in most of the samples, occasionally with a petrogenic predomination and usually with both petrogenic and pyrolitic signatures. In the sediments, PAHs with high molecular weight (from 4 to 6 rings) predominated, while in the Perna perna mussels PAHs with 2 to 3 rings and its alkyl homologues predominated; indicating low to moderately petrogenicinputs. The comparasion with the International Mussel Watch (1992) results indicated that PAH contamination have not increased in the studied area. / Os níveis e fontes de hidrocarbonetos à Lagoa dos Patos e costa adjacente foram avaliados através da análise de 28 amostras de sedimento superficial e 3 de mexilhões Perna perna. Os sedimentos apresentaram níveis de hidrocarbonetos totais entre 0,12 e 51,6 μg g-1 (peso seco) (n=18), hidrocarbonetos alifáticos totais entre 0,12 e 130,0 μg g-1(peso seco) (n=28) eΣn-C14-C35 entre 0,01-15,0 μg g-1(peso seco) (n=28), sendo geralmente mais baixos que concentrações informadas para áreas altamente contaminadas. A maioria das amostras, em especial as distantes das fontes diretas de aportes, apresentaram perfis característicos de aportes biogênicos de plantas terrestres e, em menor escala de algas. Os sedimentos com maiores valores de hidrocarbonetos alifáticos, e que apresentaram perfis característicos de aportes por óleo, estiveram associados a efluentes domésticos e industriais e a atividades náuticas do entorno da cidade do Rio Grande, a aportes da cidade de Porto Alegre e à drenagem da Lagoa dos Patos. Os biomarcadores de petróleo (terpanos e esteranos) e os alquil-benzenos lineares (L ABs) analisados em oito estações no entorno da cidade de Rio Grande, confirmaram os aportes de óleo (recente e intemperizado) e de efluentes domésticos nos sedimentos próximos ao efluente principal de esgoto doméstico de Rio Grande, da Refinaria de Petróleo e do Posto Náutico. As concentrações mais elevadas de HPAs (Σ24HPAs) (41-11792 ng g-1 peso seco), analisados somente nos sedimentos do entorno da cidade, são comparáveis com áreas moderada a altamente contaminadas ao redor do mundo. Uma mistura de HPAs de origem petrogênica e pirolítica está presente na maioria das amostras, ocasionalmente com uma predominância petrogênica e, usualmente, com ambas assinaturas petrogênica e pirolítica. Nos sedimentos predominaram HPAs de alto peso molecular (de 4-6 anéis), enquanto que nos mexilhões Perna perna a predominância foi de compostos HPAs de 2-3 anéis com seus homólogos metilados,indicando aportes baixos a moderados de origem petrogênica. A comparação com um estudo realizado em 1992 (International Mussel Watch), indica que não houve um incremento significativo nos níveis de contaminação para a região.

Submitted by isabela.moljf@hotmail.com (isabela.moljf@hotmail.com) on 2016-07-29T14:12:05Z No. of bitstreams: 1 lucianoizidorodeborba.pdf: 1207875 bytes, checksum: 2f5fc634cb254acad6406426e9c5863a (MD5) / Rejected by Adriana Oliveira (adriana.oliveira@ufjf.edu.br), reason: on 2016-07-29T14:15:55Z (GMT) / Submitted by isabela.moljf@hotmail.com (isabela.moljf@hotmail.com) on 2016-07-29T14:51:04Z No. of bitstreams: 1 lucianoizidorodeborba.pdf: 1207875 bytes, checksum: 2f5fc634cb254acad6406426e9c5863a (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-29T15:22:55Z (GMT) No. of bitstreams: 1 lucianoizidorodeborba.pdf: 1207875 bytes, checksum: 2f5fc634cb254acad6406426e9c5863a (MD5) / Made available in DSpace on 2016-07-29T15:22:55Z (GMT). No. of bitstreams: 1 lucianoizidorodeborba.pdf: 1207875 bytes, checksum: 2f5fc634cb254acad6406426e9c5863a (MD5) Previous issue date: 2015-12-17 / A temática do presente estudo está associada à expansão dos investimentos em equipamentos nas escolas estaduais da jurisdição da Superintendência Regional de Ensino de Carangola (SRE de Carangola), sendo que tais investimentos não têm impactado de forma eficiente e eficaz no uso das tecnologias educacionais nessas escolas, conforme a percepção do Núcleo de Tecnologia Educacional (NTE). Diante disso, surge o seguinte questionamento, que se caracteriza como o problema central da pesquisa: quais seriam os principais motivos da subutilização dos laboratórios de informática? Nesse contexto, a pesquisa tem como objetivo analisar a dinâmica do uso dos laboratórios de informática nas escolas estaduais da jurisdição da SRE de Carangola e propor alternativas para otimizar esse processo. Para atingir esse propósito, utilizamos uma metodologia de base qualitativa, com a aplicação de questionários em duas etapas: a primeira com os técnicos do NTE; e a segunda com gestores escolares e alguns professores de duas escolas estaduais do município de Carangola. Os dados obtidos na primeira etapa da referida pesquisa apontaram a subutilização dos laboratórios de informática. Por meio da segunda etapa, identificamos algumas dificuldades para o uso de tais espaços e obtivemos sugestões para um maior aproveitamento pedagógico dos laboratórios de informática, conforme a percepção de gestores escolares e docentes. Analisamos também quatro ações exitosas referentes ao uso dos laboratórios de informática de escolas públicas. Por conseguinte, elaboramos um plano de ação educacional, objetivando um maior aproveitamento pedagógico dos referidos espaços das escolas estaduais da jurisdição de SRE de Carangola. Tal proposta envolve um processo de capacitação na área de tecnologia educacional para gestores escolares e professores; a implementação de bolsas de monitoria; e a implantação de um protocolo de ações para o uso pedagógico dos laboratórios de informática. / The theme of this study is associated with the expansion of investment in equipment in state schools the jurisdiction of the Regional Superintendent of Carangola Education (SRE Carangola), and these investments have not impacted efficiently and effectively in the use of educational technologies in these schools as the perception of the Educational Technology Center (NTE). Thus, the following question arises, which is characterized as the central research problem: what are the main reasons for the under-utilization of computer labs? In this context, the research aims to analyze the dynamics of use of computer labs in state schools the jurisdiction of SRE Carangola and propose alternatives to optimize this process. To achieve this purpose, we use a qualitative methodology basis, with questionnaires in two stages: the first with the technicians of the NTE; and the second with school administrators and some teachers from two state schools in the city of Carangola. The data obtained in the first stage of the research showed that the underutilization of computer labs. Through the second step, we identified some difficulties in the use of such spaces and got suggestions for further pedagogical use of computer labs, as the perception of school managers and teachers. We also analyzed four successful actions regarding the use of computer laboratories in public schools. Therefore, we developed an educational action plan, aiming at a greater educational use of said spaces of state schools under the jurisdiction of SRE Carangola. The proposal involves a training process in educational technology area for school administrators and teachers; the implementation of monitoring grants; and the implementation of an action protocol for the pedagogical use of computer labs.

Through this thesis the authors explore how Labs can be designed in order to catalyze systemic sustainable change by A) contributing to systemic socio-ecological sustainability, B) providing an adaptive and experimental alternative to forecasting and traditional planning, and C) providing forums for collaboration, collective impact, capacity building, and the emergence of systemic solutions to local and global challenges. Through their research the authors performed a literature/field review, reviewed organizational documents, and analyzed a select set of Lab theories, processes, and cases. Additionally the authors interviewed leading experts in Lab design/facilitation, sustainability, the Framework for Strategic Sustainable Development (FSSD), systemic change, and transformative action. The synthesis of this research is offered to emerging Lab designers, practitioners, and facilitators interested in moving society toward a sustainable, regenerative, and thriving future.

Mandated accreditation of crime laboratories is a fairly new phenomenon. The state of Texas was the first to require that crime laboratories be accredited in order to be able to present evidence in a criminal proceeding. The laws that govern this are Texas House Bill 2703 and Texas House Bill 1068. The goal of this study is see how the enactment of these laws impacted crime laboratories. There are 42 crime laboratories that are accredited in the state of Texas. This study was conducted by the use of telephone survey interviews. Results indicated that mandated accreditation is a step in the right direction to ensure that objectivity is maintained during the processing and evaluation of physical evidence.

The recent growing popularity of mobile devices has led to the establishment of several popular mobile platforms such as the Android operating system. To foster growth in this evolving market, Application Programming Interfaces (APIs) were created to enable developers to create mobile device applications that utilize mobile device features and functionality for personal or widespread commercial use. However, as a result of excessive device and API evolution, mobile development faces increasingly complex issues, including an alarmingly rapid decay of development resources. This thesis conducts a case study around one such resource: a series of Android app development lab exercises used in an Android app development course taught at California Polytechnic State University, San Luis Obispo. First, these labs and their respective written guides were modernized and fitted for backwards-compatibility to better reflect newer Android devices and development tools at the time. The updated labs were subsequently used in the next course offering, with student lab feedback recorded for evaluation. Several years later, the apps from these new labs were further tested for abnormal behavior on a variety of Android devices. Results from analyzing all feedback and observations show that despite all measures taken to future-proof these labs, Android device and API evolution continues to vastly outpace third-party Android resources without frequent modernization and upgrades.

Title: Experimental sets in optics for Interactive Physics Laboratory Author: Jana Machalická Department: Department of Physics Education Supervisor: RNDr. Petr Kácovský, Ph.D., Department of Physics Education Abstract: As part of this thesis, a literature review focused on the topic of optics experiments was conducted. Building on the results of this review, four experimental stations were designed and realized based on the needs of the Interactive Physics Laboratory (IPL), operated by the Faculty of Mathematics and Physics, Charles University. Corresponding worksheets have also been created and provided to the students participating in each given experiment. The individual experiments, which are focused on the fields of geometrical and wave optics, are described in detail and accompanied by instructions on setting up the stations, as well as important notes on teaching methodology. Following the launch of this Optics experimental suite, a qualitative study exploring the effect of visiting the IPL on the understanding of the related physics concepts was performed by means of a short questionnaire on a small number of respondents. Several conclusions drawn from this study remain as interesting areas of future work. Keywords: physics experiments, labs, optics, secondary school

Experimental laboratory work is expected to improve learning in physics education. Considering this, many studies focus on the impact of experimental laboratory activities on students’ learning and on what factors may affect the efficiency of laboratory work. Fewer studies aim to understand the perspective of physics teachers, thus contributing to a gap between physics education research and physics teacher practice. The aim of this project is to explore which challenges physics teachers face during laboratory work and which strategies they consider effective to deal with these challenges. This exploration was restricted to the Swedish upper secondary school. Teachers’ perspectives were qualitatively investigated through an interview study with six physics teachers. These interviews were semi-structured and constructed remotely via Zoom to teachers in and around Uppsala and Stockholm in Sweden. The interviews were transcribed, translated, and analysed. Through the analysis, five major and six minor challenges were identified with in total 23 strategies to deal with these. The analysis gives an overview and indication of what challenges teachers face and what strategies they consider effective to deal with these, and can provide a tool for physics teachers in practice - building a bridge over this gap between physics education research and physics education practice. / Experimentella laborativa aktiviteter förväntas förbättra lärandet inom fysikundervisningen. I detta sammanhang fokuserar många studier på de experimentella laborationernas inverkan på elevers lärande och på vilka faktorer som kan påverka effektiviteten i laboratoriearbetet. Färre studier syftar till att förstå fysiklärarnas perspektiv, vilket bidrar till en klyfta mellan fysikdidaktisk forskning och fysiklärares praktik. Syftet med detta projekt är att utforska vilka utmaningar fysiklärare möter under laborationsmoment och vilka strategier de anser vara effektiva för att hantera dessa utmaningar. Denna undersökning begränsades till den svenska gymnasieskolan. Lärarnas perspektivundersöktes kvalitativt genom en intervjustudie med sex fysiklärare. Dessa intervjuer var semistrukturerade och konstruerade på distans via Zoom till lärare i och kring Uppsala och Stockholm i Sverige. Intervjuerna transkriberades, översattes och analyserades. Genom analysen identifierades fem strre och sex mindre utmaningar med totalt 23 strategier för att hantera dessa. Analysen ger en överblick och indikation på vilka utmaningar lärare står inför och vilka strategier de anser vara effektiva för att hantera dessa, och kan ge ett verktyg för fysiklärare i praktiken – vilket bygger en bro över klyftan mellan fysikdidaktisk forskning och fysiklärares praktik.