Improving Methods of Teaching Mathematics in Middle School

This Interactive Qualifying Project discusses two different methods for improving math learning in the classroom. The first method is a scaffolding strategy emphasizing active participation. The second method is solving equations by algebraic manipulation. The experiments indicate that employing the scaffolding strategy can improve students\u27 performance in math

Learning in Goal Oriented Autonomous Systems

This report, prepared for the Computer Science Laboratory at SRI International, covers the development of a Learning component for PAGODA, a modular architecture for goal directed agents that explore an environment without need for constant commands from an operator. Two learning algorithms are presented and our algorithm implementations analyzed. The report highlights the changes made to PAGODA and the development challenges encountered. Additionally, several potential improvements to the PAGODA system are given

Joint Stiffness Influence on the First-Order Seismic Capacity of Dry-Joint Masonry Structures: Numerical DEM Investigations

Heritage masonry structures are often modelled as dry-jointed structures. On the one hand, it may correspond to the reality where the initial mortar was weak, missing, or has disappeared through time because of erosion and lixiviation. On the other hand, this modelling approach reduces complexity to the studied problem, both from an experimental and theoretical/numerical point of views, while being conservative. Still, for modelling purposes, in addition to the joint friction, numerical approaches require a specific elastic parameter, the dry-joint stiffness, which is often hard to estimate experimentally. This work numerically investigates the effect of the joint stiffness on the collapse of scaled-down tilting test experiments carried out on perforated dry-joint masonry shear walls. It is found that geometrical imperfections of bricks and the absence of vertical precompression load can lead to very low equivalent dry-joint stiffness, which strongly affects the results, both in terms of collapse and damage limit state (DLS) loads, with practical implications for the engineering practice

Avaliação da sustentabilidade dos recursos naturais em área de várzea na região do Paraná de Parintins.

As áreas de várzea possuem uma grande diversidade de recursos naturais que são explorados por diversos atores que nela vivem e dependem desse recurso para a sua sobrevivência. Mas poucos estudos nessa área mostram como se encontram a sustentabilidade desses recursos, bem como os impactos gerados pelo seu uso. Este trabalho buscou monitorar os impactos do uso dos recursos naturais em área de manejo de lagos

Permeability and compressibility of wax-coated sands

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Agriculturas de base ecológica na comunidade Barreira do Andirá.

Este trabalho teve como objetivo caracterizar e sistematizar agriculturas de base ecológica na comunidade Barreira do Andirá. Utilizando metodologia adequada e participativa, foram observadas algumas agriculturas como o uso de sistemas agroflorestais com a cultura principal sendo o guaraná, Paullinia cupana e a criação de abelhas meliponeas

Identificação, caracterização e inserção no mercado de produtos orgânicos na região da Barreira do Andirá.

A pesquisa objetivou caracterizar as principais cadeias de produtos orgânicos da agricultura familiar e sua inserção no mercado. Foi realizada na comunidade Barreira do Andirá, município de Barreirinha - AM e poderá vir a subsidiar propostas de desenvolvimento local sustentável. Como ferramenta de pesquisa utilizou-se o método estudo de caso. Identificando-se duas importantes cadeias produtivas: a da mandioca e a do guaraná e, a importância da organização social para alcançar o desenvolvimento rural com base na agroecologia

Traceability for Model Driven, Software Product Line Engineering

Traceability is an important challenge for software organizations. This is true for traditional software development and even more so in new approaches that introduce more variety of artefacts such as Model Driven development or Software Product Lines. In this paper we look at some aspect of the interaction of Traceability, Model Driven development and Software Product Line