59 research outputs found
The Iowa Homemaker vol.34, no.1
No full textTreat to Eat, Dorothy Will, page 5
Light Beautiful, Mary Vandecar, page 6
Look Pert in Pellon, Barbara Gerling and Doris Jirsa, page 7
Look Ahead, page 8
New Zest in Dinnerware Designs, Joan Mertens, page 9
Try Sleep, Mary Odegard, page 10
Practice What They Teach, Vivian Johnson, page 13
Their Goal – Good Housekeeping, Nancy Fox, page 14
What’s New, page 16
Trends, Jean Wilkerson, page 18</p
Effects of Social Behaviours in Online Video Games on Team Trust
Get PDFIn competitive multiplayer online video games, teamwork is of utmost importance, implying high levels of interdependence between the joint outcomes of players. When engaging in such interdependent interactions, humans rely on trust to facilitate coordination of their individual behaviours. However, online games often take place between teams of strangers, with individual members having little to no information about each other than what they observe throughout the interaction itself. A better understanding of the social behaviours that are used by players to form trust could not only facilitate richer gaming experiences, but could also lead to insights about team interactions. As such, this paper presents a first step towards understanding how and which types of in-game behaviour relate to trust formation. In particular, we investigate a) which in-game behaviour were relevant for trust formation (first part of the study) and b) how they relate to the reported player's trust in their teammates (the second part of the study). The first part consisted of interviews with League of Legends players in order to create a taxonomy of in-game behaviours relevant for trust formation. As for the second part, we ran a small-scale pilot study where participants played the game and then answered a questionnaire to measure their trust in their teammates. Our preliminary results present a taxonomy of in-game behaviours which can be used to annotate the games regarding trust behaviours. Based on the pilot study, the list of behaviours could be extended as to improve the results. These findings can be used to research the role of trust formation in teamwork.</p
Machine Learning for Software Refactoring: a Large-Scale Empirical Study
No full textRefactorings tackle the challenge of architectural degradation of object-oriented software projects by improving its internal structure without changing the behavior. Refactorings improve software quality and maintainability if applied correctly. However, identifying refactoring opportunities is a challenging problem for developers and researchers alike. In a recent work, machine learning algorithms have shown great potential to solve this problem. This thesis used RefactoringMiner to detect refactorings in open-source Java projects and computed code metrics by static analysis. We defined the refactoring opportunity detection problem as a binary classification problem and deployed machine learning algorithms to solve it. The models classify between a specific refactoring type and a stable class using the metrics as features. Multiple machine learning experiments were designed based on the results of an empirical study of the refactorings. For this work, we created the largest data set of refactorings in Java source code to date, including 92800 open-source projects from GitHub with a total of 33.67 million refactoring samples. The data analysis revealed that Class- and Package-Level refactorings occur most frequently in early development stages of a class, Method- and Variable-Level refactorings are applied uniformly during the development of a class. The machine learning models achieve high performance ranging from 80\% to 89\% total average accuracy for different configurations of the refactoring opportunity prediction problem on unseen projects. Selecting a high Stable Commit Threshold (K) improves the recall of the models significantly, but also strongly reduces the generalizability of the models. The Random Forest (RF) classifier shows great potential for the refactoring opportunity detection, it can adapt to various configurations of the problem, identifies a large variety of relevant metrics in the data and is able to distinguish different refactoring types. This work shows that for solving the refactoring opportunity detection problem a large variety of metrics is required, as a small set of metrics cannot represent the complexity of the problem.http://doi.org/10.5281/zenodo.4267824 Appendix: Data Analysis and Machine Learning Experiments ShowEdit http://doi.org/10.5281/zenodo.4267711 Appendix: Refactoring Data Set ShowEdit https://github.com/refactoring-ai/Data-Collection Repository link Refactoring Mining Tool ShowEdit https://github.com/refactoring-ai/Machine-Learning Repository link Machine Learning PipelineComputer Scienc
Desarrollo de un protocolo óptimo para el estudio de complejos moleculares de ADN-proteína por medio de microscopía de fuerza atómica
Get PDFTesis (Maestría en Nanociencias y Materiales)"En esta tesis se desarrolló un protocolo óptimo para el estudio de complejos moleculares de ADN-proteina mediante Microscopia de Fuerza Atómica (AFM). La técnica de AFM ha sido extensamente utilizada para el estudio de moléculas biológicas, en particular ADN, debido a su alta resolución espacial y a que permite analizar muestras sin recurrir a tinciones o recubrimientos. En este trabajo de tesis revisamos diferentes preparaciones de muestra hasta establecer un protocolo óptimo para la visualización de moléculas de ADN (λ ADN y plásmidos) y complejos ADN-proteína, utilizando como proteína modelo la Uracilo-ADN glicosilasa (UDG). Estas moléculas se depositaron sobre dos sutratos: mica y mica modificada con APTES ( AP-mica). Se utilizaron dos métodos de deposición: el método convencional y el método de spin-coating. Concluimos que la mica es un sustrato favorable para la obtención de moléculas de ADN extendidas y aisladas, caso contrario al uso de AP-mica. El problema de inhomogeneidad en las muestras se resolvió mediante la técnica de spin-coating, lo cual nos permitió observar de manera reproducible complejos λ ADN-UDG. En estos experimentos el uso de formaldehído como agente de entrecruzamiento incrementa el número de complejos λ ADN-UDG observados por AFM. Resultados preliminares obtenidos en esta tesis sugieren que el mecanismo de reconocimiento del λ ADN por la UDG no ocurre por deformación del ADN (un mecanismo propuesto para otras proteínas reparadoras de ADN). ""We developed an optimal protocol for studying molecular DNA-protein complexes using Atomic Force Microscopy (AFM). This technique has been used extensively for the study of biological molecules like DNA. It has a high spatial resolution and analyses performed does not require staining or coating samples. In this work, we used Uracil-DNA glycosylase (UDG), a model protein, and reviewed different sample preparation protocols establishing an optimal protocol for visualizating DNA (λ DNA and plasmids) and DNA-protein complexes. These molecules were deposited onto two substrates, mica and APTES-modified mica (AP-mica). Two methods were used deposition: the conventional method and the method of spin-coating. We conclude mica is a favorable substrate for the obtaining extended and isolated DNA molecules, unlike AP-mica. In regards with the deposition techniques used, the conventional method resulted in inhomogeneous samples and we observed the formation of different DNA superstructures on mica. Inhomogeneities were resolved by spin-coating technique, which allowed us to observe λ DNA-UDG complexes in a reproducible manner. In our experiments, the use of formaldehyde as a crosslinking agent increased the number of λ DNA-UDG complexes observed by AFM. Preliminary results obtained in this work suggest that the mechanism of λ DNA recognition by UDG does not occur by deformation of DNA (a mechanism proposed for other DNA-repair proteins).
Inter-project learning of innovations: A study in learning of innovations from project to project at Rijkswaterstaat
No full textInfrastructure Design and ManagementStructural EngineeringCivil Engineering and Geoscience
A new species of Aleurolobus Quaintance et Baker (Homoptera, Aleyrodidae) from Southern Europe.
Get PDFAleurolobus teucrii n. sp. is described from southern Italy and the Maltese Islands (Central Mediterranean). The species seems to be monophagous on Teucrium fruticans L. A key to the European species of this genus (A. niloticus Priesner et Hosny, A. olivinus (Silvestri), A. wunni (Ryberg) and A. teucrii n. sp.) is provided.peer-reviewe
O primeiro movimento da Sonata II para piano solo de Bruno Kiefer : uma análise interpretativa
Get PDFEste estudo do primeiro movimento da Sonata II para piano de Bruno Kiefer parte do ponto de vista do executante. Reunindo cartas, documentos e outras evidências do arquivo do compositor, apresenta uma análise que expõe uma concepção pessoal dos significados referenciais transmitidos pela obra. O entendimento da linguagem musical do compositor, obtido através dos processos composicionais e dos ambientes emocionais constituem-se em ferramentas de suporte para a interpretação.This study approaches the first movement of Bruno Kiefer’s Piano Sonata II from the performer standpoint. Based on letters and other archival material as well as an extensive analysis of compositional elements, the author presents referencial meanings related to emotional states resulting in an interpretive analysis
Fantasia do Concerto para violino e orquestra de Octávio Meneleu Campos : uma proposta pedagógica
Get PDFO presente trabalho teve como objetivo a realização de uma proposta pedagógica para a obra Fantasia de Concerto, do compositor brasileiro nascido em Belém do Pará, Meneleu Campos. A partir do conhecimento da obra em questão, foi realizada uma comparação com o chamado repertório tradicional violinístico, a fim de identificar os aspectos técnicos semelhantes e, a partir disso, formular uma proposta pedagógica. A comparação com o repertório tradicional, foi baseada no artigo “Ousadia e convenção do Segundo Concerto para violino e Orquestra de Camargo Guarnieri” Alvarenga (2000). Para a realização da proposta pedagógica, utilizou-se, como referencial teórico o livro “Practice” (2004) de Simon Fischer, no qual o autor mostra soluções técnicas para passagens do repertório tradicional. Identificados os aspectos técnicos e violinísticos da Fantasia de Concerto, foi possível, baseado nas propostas de Fischer, desenvolver exercícios para a obra em estudo.This essay aimed at presenting a pedagogical proposal for the work Fantasia de Concerto by Meneleu Campos - a Brazilian composer, born in Bélem do Pará. A study of the work paved the way for a comparison with the standard violin repertoire, thus establishing common technical issues which in turn served as the starting point for the pedagogical proposal. The comparison with the standard repertoire was based on the article “Ousadia e convenção do Segundo Concerto para violino e Orquestra de Camargo Guarnieri” Alvarenga (2000). The pedagogical proposal was based on the book “Practice” (2004) by Simon Fischer. This author offers suggestions on how to work and solve problems found in the standard violin repertoire. Therefore, once the technical difficulties of the Fantasia de Concerto were identified, exercises of a similar nature were devised
Primeira sonata-fantasia, Désespérance, para o violino e piano de Heitor Villa-Lobos : estratégias de estudo para o violinista
Get PDFA presente pesquisa tem como objetivo investigar estratégias de estudo para a parte de violino da Primeira Sonata-Fantasia, Désespérance, para violino e piano de Heitor Villa- Lobos. A prática é o caminho que o instrumentista usa para desenvolver habilidades como ritmo e afinação, articulação e demais demandas expressivas da obra. O foco da prática instrumental está no uso de estratégias adequadas para vencer aspectos técnicos de determinados repertórios. Este trabalho expõe estratégias de estudo baseadas nas propostas dos professores de violino Robert Gerle e Simon Fischer nos livros: The Art of Practising The Violin e The Art of Bowing Practice, do primeiro, e nos livros Basics e Practice do último. As estratégias apresentadas são exercícios específicos, utilizados pela autora, para o desenvolvimento dos aspectos técnicos contidos na Sonata-Fantasia tais como arpejos e escalas com andamentos rápidos, cordas duplas, acordes de três ou quatro notas e trechos de harmônicos artificiais.This research investigates violin practice strategies applicable to Heitor Villa-Lobos‟s Sonata-Fantasy No. 1, Désespérance, for Violin and Piano. Instrumentalists develop the abilities needed to execute various instrumental techniques, through specific practice methods. Thus, the focus of instrumental practice is the use of appropriate strategies to overcome technical difficulties within the studied repertoire. Departing from the extensive pedagogical works of violinists Robert Gerle and Simon Fischer, this article presents the violin practice strategies applied by the author to develop the technical abilities required to perform the Sonata-Fantasia, such as: arpeggios, scales in fast tempo, double-stops, chords of three and four notes and artificial harmonics
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