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149 articles for “Variability”
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Research ArticleOpen accessEvery word in the titlePerinatal Cardiovascular Evaluation in Dorper Sheep Echocardiographic Description and Behavior of the Heart Rate Variability on the FieldAmanda Sarita Cruz Aleixo, Mayra de Castro Ferreira Lima, Ana Luísa Holanda de Albuquerque et al.The heart is innervated by the autonomic nervous system, with a predominance of sympathetic and parasympathetic activity associated, respectively, with increases and decreases in the heart rate, as illustrated by the Heart Rate Variability (HRV). Pregnancy induces significant changes in the maternal cardiovascular and hemodynamic systems. This study aimed at evaluating changes in the clinical and echocardiographic parameters of pregnant … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 4 · 3 Nov 2021 · 6,518 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleShort-Term Effects of Aroma Therapeutic Herbal Steam on Heart Rate Variability and StressPeerada Damapong, Pongmada DamapongThis experimental research aims to examine the short-term effects of aroma therapeutic herbal steam on heart rate variability and stress. In this experimental study, the participants were 60 diabetic patients with stress who had rated their stress in the Suang-prung Stress Test-20 at the level of 3 or higher. They were divided into the treatment group (n = 30) and … …American Journal of Applied Sciences, Vol. 15, Issue 7 · 4 Sep 2018 · 8,671 accessesView PDFCite
Review ArticleOpen accessEvery word in the titleComparing SMarty and PLUS for Variability Identification and Representation at Product-Line UML Class Level: A Controlled Quasi-ExperimentAnderson S. Marcolino, Edson OliveiraJrAlthough variability management is one of the main activities of software product lines, current literature provides almost no empirical evaluations on variability management approaches based on UML. This paper aims at experimentally comparing two approaches and picks SMarty and PLUS as representative examples. Such comparison takes into account their effectiveness of expressing correctly and incorrectly variabilities in UML class diagrams. … …Journal of Computer Science, Vol. 13, Issue 11 · 9 Nov 2017 · 7,455 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleVariability Resolution and Product Configuration with SMarty: An Experimental Study on UML Class DiagramsAnderson S. Marcolino, Edson OliveiraJr, Itana M.S. Gimenes, Ellen F. BarbosaVariability management is one of the most important activities during software product line development and evolution. Current literature presents several approaches for variability management, especially based on UML, such as, PLUS and SMarty. A systematic process with guidelines support SMarty. Existing literature for these kind of approaches provides slight experimental evidence of their effectiveness at product configuration. Thus, this is … …Journal of Computer Science, Vol. 13, Issue 8 · 8 Jul 2017 · 7,697 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImpacts of Large-Scale Stormwater Green Infrastructure Implementation and Climate Variability on Receiving Water Response in the Salt Lake City AreaChris York, Erfan Goharian, Steven J. BurianThis study evaluated impacts of Green Infrastructure (GI) as a stormwater management practice on return flows and the further Implications of climate variability. The goal was to create a model to explore the impacts that bioretention and Rainwater Harvesting (RWH) representing GI had using goldsim and Stormwater Management Modeling (SWMM) software. The software was used to represent impacts that climate … …American Journal of Environmental Sciences, Vol. 11, Issue 4 · 20 Oct 2015 · 9,269 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA COEFFICIENT OF VARIABILITYManuel Martinez-PonsA coefficient of variability is described. It is shown that conducting all possible paired comparisons in a group of scores, the investigator can ascertain the group’s degree of variability as well as its converse, the group’s degree of homogeneity. The coefficient, useful in determining whether to divide a class into subgroups for the purpose of instruction, has the advantage that … …Journal of Mathematics and Statistics, Vol. 9, Issue 1 · 12 Apr 2013 · 7,107 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleVariability of Hydraulic Conductivity Due to Multiple FactorsSanjit K. Deb, Manoj K. ShuklaSoil properties are greatly influenced by intrinsic factors of soil formation as well as extrinsic factors associated with land use and management and vary both in time and space. Intrinsic variability is caused by the pedogenesis and usually takes place at large time scales. The variability caused by extrinsic factors could take effect relatively quickly and could not be treated … …American Journal of Environmental Sciences, Vol. 8, Issue 5 · 13 Aug 2012 · 10,219 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleHeart Rate Variability Analysis in Different Age and Pathological ConditionsM.E.S. Chelladurai, N. KumaravelProblem statement: Heart Rate Variability (HRV) has been used as a measure of mortality primarily with patients who had undergone cardiac surgery. The analysis of Heart Rate Variability (HRV) demands specific capabilities which are not provided either by parametric or nonparametric conventional estimation methods. The Empirical Mode Decomposition (EMD) adaptively estimates the Intrinsic Mode Functions (IMFs) of nonlinear nonstationary signals. … …Journal of Computer Science, Vol. 7, Issue 10 · 4 Aug 2011 · 6,818 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleGenetic Variability in Rhizoctonia solani Isolated from Vitis vinifera Based on Amplified Fragment Length PolymorphismAmparo Meza-Moller, Martin Esqueda, Felipe Sanchez-Teyer et al.Problem statement: Rhizoctonia solani is a potential grapevine pathogen. In order to develop effective methods of control, it is necessary to document its genetic diversity. Approach: The objective of this study was to analyze the genetic variability of R. solani isolated from the rhizosphere of ungrafted V. vinifera var. perlette seedless planted in Sonora, Mexico using Amplified Fragment Length Polymorphism … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 3 · 4 Aug 2011 · 8,477 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnalysis of Evapotranspiration Variability and Trends in the Arabian PeninsulaMohammad ElNesr, Abdulrahman Alazba, Majed Abu-ZreigProblem statement: Climate variability is receiving much attention recently because it has significant effects on water resources and therefore on the livelihood of society especially in water scarce countries such the Kingdom of Saudi Arabia (KSA). Approach: The aim of this study was to explore changes in the reference evapotranspiration (ETo) using data from 27 weather stations through years 1980-2008 … …American Journal of Environmental Sciences, Vol. 6, Issue 6 · 31 Dec 2010 · 8,005 accessesView PDFCite