Search results for "Methodology"
showing 10 items of 852 documents
Operational Definition of Serious Mental Illness: Heterogeneity in a Review of the Research on Quality-of-Life Interventions
2020
BACKGROUND: An operational definition of serious mental illness (SMI) with well-defined inclusion criteria allows the identification of the most vulnerable individuals and secures resources to meet their needs and develop social programs for their treatment, rehabilitation, and recovery. In addition, the contents of a clinical construct such as SMI have an impact on both the development and the clinical application of the research results. However, currently, different ways of operationalizing the definition of SMI coexist. AIMS: The aim of this review was to explore whether unanimity exists in the operationalization of SMI definitions in quality-of-life interventions research. METHODS: A r…
Investigating the quality of mental models deployed by undergraduate engineering students in creating explanations: The case of thermally activated p…
2013
This paper describes a method aimed at pointing out the quality of the mental models undergraduate engineering students deploy when asked to create explanations for phenomena or processes and/or use a given model in the same context. Student responses to a specially designed written questionnaire are quantitatively analyzed using researcher-generated categories of reasoning, based on the physics education research literature on student understanding of the relevant physics content. The use of statistical implicative analysis tools allows us to successfully identify clusters of students with respect to the similarity to the reasoning categories, defined as ``practical or everyday,'' ``descri…
Including Covariates in the ETAS Model Triggered Seismicity
2020
The paper proposes a stochastic process that improves the assessment of seismic events in space and time, considering a contagion model (branching process) within a regression-like framework to take covariates into account. The proposed approach develops the Forward Likelihood for prediction (FLP) method for estimating the ETAS model, including covariates in the model specification of the epidemic component. A simulation study is carried out for analysing the misspecification model effect under several scenarios. Also an application to the Italian catalogue is reported, together with the reference to the developed R package.
Optimisation of liquid rubber modified bitumen for road pavements and roofing applications
2020
Abstract Polymer Modified Bitumens (PMBs) are largely used for pavement and roofing membranes applications with Styrene-Butadiene-Styrene Block copolymer (SBS) playing a major role in both markets despite its constantly increasing price due to the rising demand for quality bitumen modifiers. On the other hand, there is an increasing trend of recycling end of life tyres generating Recycled Tyre Rubber (RTR) at affordable price. This investigation aims at engineering a modified bitumen with a combination of Liquid Rubber (LR), a homogeneous blend of 50–70% RTR pre-processed in combination with heavy oils, and a wax denominated Ethylene Bis Stearamide (EBS). In the first phase, the effect of L…
YouTube and influencers in childhood. Content analysis and educational proposals
2020
RESUMEN: La presencia de las tecnologías móviles e Internet entre los niños y jóvenes está generando nuevos marcos de comprensión, interacción y consumo de medios y contenidos. YouTube se ha convertido en una de las plataformas más utilizadas por estos, lo cual exige investigar las repercusiones ejercidas por estos influencers en los niños. En el presente trabajo se realiza una contextualización teórica sobre el nuevo entorno digital en el que Internet y las redes sociales forman parte indiscutible de la cotidianeidad, para avanzar hacia un marco metodológico y de investigación de los principales YouTubers seguidos por niños/as de Educación Primaria en España. Se ha utilizado una metodologí…
Fitting linear models and generalized linear models with large data sets in R
2009
We present an estimating algorithm to fit linear and generalized linear models not involving the QR decomposition. Some new R functions are presented and discussed. For large data sets, comparisons with respect to the well-known lm() and glm(), as well as to biglm() and bigglm() from the package biglm, show that the proposed functions speed up computation while preserving numerical stability and accuracy
Koncepcja urban resilience : narzędzie strategicznej diagnozy i monitoringu miast
2015
Celem artykułu jest prezentacja propozycji metodyki badawczej dotyczącej oceny prężności miejskiej, w tym jej wstępna weryfikacja dla wybranych miast w Polsce. Uzupełnienie w tym zakresie stanowi sformułowanie wniosków odnoszących się do zastosowania analizowanej metodyki badawczej w procesie strategicznej diagnozy i monitoringu miast. Proponowana metodyka oceny prężności miejskiej zakłada, że miasto stanowi otwarty system adaptacyjny, składający się z atrybutów prężności i wrażliwości. Monitorowanie ich wartości jest elementem diagnozy strategicznej prowadzącym do identyfikacji działań wzmacniających prężność miasta.
Quality of reporting in abstracts of RCTs published in emergency medicine journals: a protocol for a systematic survey of the literature
2017
Introduction The quality of reporting of abstracts of randomised controlled trials (RCTs) in major general medical journals and in some category-specific journals was shown to be poor before the publication of the ConsolidatedStandards of ReportingTrials (CONSORT) extension for abstracts in 2008, and an improvement in the quality of reporting of abstracts was observed after its publication. The effect of the publication of the CONSORT extension for abstracts on the quality of reporting of RCTs in emergency medicine journals has not been studied. In this paper, we present the protocol of a systematic survey of the literature, aimed at assessing the quality of reporting in abstracts of RCTs p…
The quality of reporting methods and results of cost-effectiveness analyses in Spain: a methodological systematic review
2016
Open Access; Open Peer Review.-- et al.
Rare Cancers Europe (RCE) methodological recommendations for clinical studies in rare cancers: A European consensus position paper
2015
While they account for one-fifth of new cancer cases, rare cancers are difficult to study. A higher than average degree of uncertainty should be accommodated for clinical as well as for population-based decision making. Rules of rational decision making in conditions of uncertainty should be rigorously followed and would need widely informative clinical trials. In principle, any piece of new evidence would need to be exploited in rare cancers. Methodologies to explicitly weigh and combine all the available evidence should be refined, and the Bayesian logic can be instrumental to this end. Likewise, Bayesian-design trials may help optimize the low number of patients liable to be enrolled in …