Validity Of The Experiment
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. A Mapping Study of Scientific Merit of Papers, which Subject are Web Applications Test Techniques, Considering their Validity Threats
Abstract Progress in software engineering requires (1) more empirical studies of quality, (2) increased focus on synthesizing evidence, (3) more theories to be built and tested, and (4) the validity of the experiment is directly related with the level of confidence in the process of experimental investigation. This paper presents the results of a qualitative
JISTEM J.Inf.Syst. Technol. Manag.. Publicado em: 18/10/2018
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2. REVISITING IDEAL GASES AND PROPOSAL OF A SIMPLE EXPERIMENT FOR DETERMINING ATMOSPHERIC PRESSURE IN THE LABORATORY
Relevant historical aspects concerning ideal gases were briefly reviewed to provide a condensed resource for the undergraduate student of chemistry. The importance of the barometer and the concept of atmospheric pressure were reviewed and discussed. A combination of Boyle's law with the well-known equation for determining the pressure produced by a column of
Quím. Nova. Publicado em: 2018-07
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3. Effect of Boride Incubation Time During the Formation of Fe2B Phase
Our present study focuses on the numerical simulation of the boronized layer growth kinetics on the iron substrate of the XC38 steel, the boronizing treatment is performed in a liquid medium composed of borax and silicon carbide. We mainly calculated the incubation time of the boronized layer formation. Aimed at estimating the boronizing treatment kinetics o
Mat. Res.. Publicado em: 27/11/2017
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4. Improving reproducibility and external validity. The role of standardization and data reporting of laboratory rat husbandry and housing
Abstract Purpose: To identify the most relevant flaws in standardization in husbandry practices and lack of transparency to report them. This review proposes some measures in order to improve transparency, reproducibility and eventually external validity in experimental surgery experiments with rat model. Methods: We performed a search of scientific articl
Acta Cir. Bras.. Publicado em: 2017-03
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5. Effects of affective valence on a mixed Spatial Correspondence Task: a reply to Proctor (2013)
The present study investigated the influence of emotional valence on the spatial stimulus-key location correspondence effect in three experiments using the Affective Spatial Correspondence task (AffSCt). We initially reanalyzed the results of Conde et al. (2011) according to the model proposed by Proctor (2013). In that study, compatible and incompatible res
Psychol. Neurosci.. Publicado em: 2014-06
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6. Padrões bioenergéticos das aranhas de teia: considerações sobre a unidade e a diversidade do fenômeno / Patterns of bioenergetic of web spiders: considerations about the unity and diversity of the phenomenon
The physiological mechanisms are often applied to explain important evolutionary adaptations (e.g. endothermy) and ecology (e.g. physiological limitations to occupy a particular microhabitat) of vertebrates. Despite the fact that it improves vertebrates ecological and evolutionary hypotheses with possible processes and mechanisms, it is scarcely used to unde
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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7. Ajuste do rendimento para a variação do estande em experimentos de melhoramento genético do feijão
O objetivo deste trabalho foi avaliar o ajuste do rendimento pela variação do estande em experimentos de feijão e propor procedimento para ajustamento por análise de co-variação. Utilizaram-se dados de 33 ambientes do Ensaio Estadual de Feijão do Rio Grande do Sul. Realizaram-se as análises de variação e de co-variação de rendimento e de estande
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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8. Cell toxicity in vitro analysis of PVC tubes consecutively submitted to gamma-rays and ethylene oxide sterilization / Análise in vitro da toxicidade celular de tubos de PVC esterilizados consecutivamente em raios gama e óxido de etileno
In 1967, a letter sent to the British Medical Journal reported that the re-sterilization with Ethylene Oxide (EtO) of previously irradiated Polyvinyl Chloride (PVC) formed large amounts of ethylene chlorohydrin, a highly toxic compound. Even though it did not present measured data, this letter initiated a controversy that still divide the opinion of research
Publicado em: 2010
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9. La engañosa simplicidad del "método de Stokes" para medir viscosidades
In this article we focus on the relation between magnitudes used to measure liquid viscosity coeficients with Stokes’ method. The related experiment is a low-cost, and apparently also a very simple one. Its simplicity however rests on the exacting conditions that must be fulfilled by the system. Otherwise, it is incorrect to assume the validity of the
Revista Brasileira de Ensino de Física. Publicado em: 2009-12
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10. Statistical design for recycling kaolin processing waste in the manufacturing of mullite-based ceramics
Mineral extraction and processing industries have been cited as sources of environmental contamination and pollution. However, waste recycling represents an alternative recovery option, which is interesting from an environmental and economic standpoint. In this work, recycling of kaolin processing waste in the manufacture of mullite-based ceramics was invest
Materials Research. Publicado em: 2009-06
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11. Informational structure and duplication: a contribution to the teaching of the pronouns E/LE / A estrutura informacional e as duplicações: uma contribuição ao ensino de E/LE
This research aims at verifying if the students-informants, Brazilian learners of Spanish as a foreign language, and future teachers, use the duplicate phenomena, as well as investigate if the hypothesis that the experience in classroom focused on providing abundant input and focused on communication can lead to better results in the use of clitic pronouns a
Publicado em: 2009
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12. Avaliação da percepção de dor em neonatos pré-termo sob sedo-analgesia
This study aimed to: (1) assess the reactions of pain in preterm newborns who are under infusion of analgesic and sedative drugs during procedures for collecting blood sample and (2) test the validity of two behavioral instruments and two physiological indicators used for assessment pain in this population. For the validation of pain assessment tools, were f
Publicado em: 2008