Distortions
Mostrando 25-36 de 338 artigos, teses e dissertações.
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25. Analysis of Risk and Mispricing Hypotheses of Accruals: Evidence from Brazil
Resumo Objetivo Analisar como a precificação dos accruals se configura no mercado brasileiro, isto é, se representa um mispricing de mercado ou fator de risco precificável. Metodologia: Utilizou-se de uma amostra de empresas não financeiras listadas na B3. Para o alcance do objetivo, fez-se uso da metodologia de carteiras, modelos de precificação de
Rev. bras. gest. neg.. Publicado em: 2019-01
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26. Analysis of Quenching Parameters in AISI 4340 Steel by Using Design of Experiments
This paper aims to investigate the effects of quenching parameters (temperature and time of austenitizing and cooling rate) on the microstructure, hardness and distortion of AISI 4340 steel by Design of Experiments (DoE). The factorial design was used to determine the influence of the factors on the response variable. After quench samples were characterized
Mat. Res.. Publicado em: 14/11/2018
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27. Prediction of Shape Distortions in Composite Wing Structures
Abstract Shape distortions and warpage are a major source of problems for composite manufacturers. These distortions are usually accompanied by built up residual stresses. They can deform a component so that it becomes useless. It also has the capability to reduce the strength of the structure. In this paper, the three-dimensional version of the constitutive
Lat. Am. j. solids struct.. Publicado em: 29/10/2018
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28. Simultaneous Equations to Estimate Aboveground Biomass of Pinus caribaea var . hondurensis
ABSTRACT This study aimed to develop equations to predict the biomass of trunks, branches, needles and total individual biomass for Pinus caribaea var. hondurensis . A simultaneous equation system was also adjusted. Twenty (20) trees from the experimental area of the State University of Southwest Bahia (UESB), Vitória da Conquista, Bahia, Brazil, were meas
Floresta Ambient.. Publicado em: 26/07/2018
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29. Burnout in the staff of a chronic care hospital
ABSTRACT OBJECTIVE To estimate the prevalence of Burnout in a medium or long-stay hospital, to monitor its evolution and to highlight the importance of cut-off points used to avoid distortions in the interpretation of the results. METHODS Two cross-sectional studies (2013–2016) were carried out, applying the Spanish version of the Maslach Burnout Invento
Rev. Saúde Pública. Publicado em: 03/05/2018
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30. On the Intrinsic Limits of the Convolution Method to Obtain the Crystallite Size Distribution from Nanopowders Diffraction
The present work briefly reviews the convolution of crystallite shape functions and discusses its experimental limitations. The diffraction from a theoretical spherical shape powder is used to exemplify the limits of the convolution procedure. Mean lattice distortions were not considered since the discussed limitations are inherent to the convolution method
Mat. Res.. Publicado em: 22/03/2018
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31. Finite Element Simulation of Welding Distortion in Dissimilar Joint by Inherent Deformation Method
Abstract Fusion welding is widely used to join different parts to each other in various industries. However, welding-induced distortions sometimes cause problems such as misalignment during assembling and impose costs for their removal. Thus, it is imperative to predict and mitigate these problems to improve weldment quality and also reduce fabrication cost
Soldag. insp.. Publicado em: 2018-03
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32. Low cost system to measure active power in electrosurgical units
Abstract Introduction: The real-time measurement of active power delivered to patients during the electrosurgical act is still an engineering challenge. Besides, there is no electrosurgical unit on the market capable of doing it according to the normative requirement. Methods This work presents the design of an electronic structure capable to probe the ele
Res. Biomed. Eng.. Publicado em: 09/11/2017
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33. Effects of Key Factors on Hull Girder Ultimate Strength Estimation by Progressive Collapse Calculations
Abstract The estimation of the ship hull girder ultimate strength under vertical bending moments as close to real behavior is vital both for design stage or seagoing life. The maximum load carrying capacity of ship hulls called ultimate strength depends on a number of factors including the strength of the structural material, initial distortions, dimensions
Lat. Am. j. solids struct.. Publicado em: 2016-12
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34. Projective aspects on cognitive performance: distortions in emotional perception correlate with personality
Abstract Several approaches in psychology converge with the concept that individual characteristics may interfere with the perception and interpretation of the world. We hypothesized that such phenomenon could be identified in instruments that were not only projective techniques. The research’s goal was to study perceptive distortions in a cognitive test a
Psicol. Reflex. Crit.. Publicado em: 20/06/2016
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35. Ba-DOPED ZnO MATERIALS: A DFT SIMULATION TO INVESTIGATE THE DOPING EFFECT ON FERROELECTRICITY
ZnO is a semiconductor material largely employed in the development of several electronic and optical devices due to its unique electronic, optical, piezo-, ferroelectric and structural properties. This study evaluates the properties of Ba-doped wurtzite-ZnO using quantum mechanical simulations based on the Density Functional Theory (DFT) allied to hybrid fu
Quím. Nova. Publicado em: 2016-04
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36. Evaluation of the Residual Stress State of 42crmo4 Steel Sheets in a Production Line
The residual stress state of a mechanical component is an important factor in its production planning and in estimates of its lifecycle since it can be responsible for geometric distortions and degradation of fatigue properties. Therefore, the development of reliable methods for non-destructively quantifying these stresses remains in the interest of most man
Mat. Res.. Publicado em: 05/02/2016