Results 71 to 80 of about 90,914 (198)
A Markov approach to credit rating migration conditional on economic states
Canadian Journal of Statistics, EarlyView.Abstract We develop a model for credit rating migration that accounts for the impact of economic state fluctuations on default probabilities. The joint process for the economic state and the rating is modelled as a time‐homogeneous Markov chain. While the rating process itself possesses the Markov property only under restrictive conditions, methods ...
Michael Kalkbrener, Natalie Packham
wiley +1 more source
A meeting-point between mathematics and the theory of musical scales: well-formed scales.(Spanish: Un encuentro entre las matemáticas y la teoría de escalas musicales: Escalas bien formadas) [PDF]
, 2013 Depto. de Álgebra, Geometría y TopologíaInstituto de Matemática Interdisciplinar (IMI)Fac.
Castrillón López, Marco +1 more
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Fourier Mass Lower Bounds for Batchelor‐Regime Passive Scalars
Communications on Pure and Applied Mathematics, EarlyView.ABSTRACT Batchelor predicted that a passive scalar ψν$\psi ^\nu$ with diffusivity ν$\nu$, advected by a smooth fluid velocity, should typically have Fourier mass distributed as |ψ̂ν|2(k)≈|k|−d$|\widehat{\psi }^\nu |^2(k) \approx |k|^{-d}$ for |k|≪ν−1/2$|k| \ll \nu ^{-1/2}$.
William Cooperman, Keefer Rowan
wiley +1 more source
Uma experiência de ensino com alunos do 9.º ano para promover o desenvolvimento do pensamento algébrico [PDF]
, 2012 As orientações curriculares atuais enfatizam que o ensino da Matemática deve decorrer de forma coere nte, incidir numa Matemática relevante e ser bem articulado nos diferentes anos de escolaridade.
Amado, Nélia +2 more
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Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT Sustainability‐oriented collaborations are inter‐organisational arrangements where the competencies of multiple companies are pooled together to tackle environmental challenges. These collaborations differ from traditional strategic alliances in that they tackle complex goals amidst greater uncertainties that extend beyond economic performance,
Vittorio Maria Garibbo +3 more
wiley +1 more source
Caracterización de los elementos epistemológicos que usan algunos profesores al tratar el álgebra geométrica en algunas clases de grado octavo [PDF]
, 2009 Este documento intenta mostrar algunas de las causas y consecuencias del desligamiento de la enseñanza de álgebra y la geometría en grado octavo, para esto utiliza un marco de referencia que hace énfasis en el desarrollo epistemológico del álgebra y de ...
Bustos, Paola Andrea +2 more
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Contributions to Plasma Physics, EarlyView.ABSTRACT A methodological study is presented on a noninvasive photometric diagnostic for determining trends in electron density and sheath dynamics in single (1f) and a dual (2f) radio frequency capacitively coupled (CCRF) argon plasmas. The 1f discharges are operated at 13.56 and 27.12 MHz, respectively, while the 2f discharge is driven by both ...
Daniel Zuhayra +3 more
wiley +1 more source
Transversalidad del concepto de independencia lineal en algebra lineal, análisis numérico y análisis matemático II [PDF]
, 2014 Anomalías entre enseñanza y aprendizaje se evidencian en falta de articulación de conceptos. Nuestra propuesta consiste en una secuencia didáctica, para establecer un andamiaje para articular el concepto de Independencia Lineal, definido en Álgebra y que
Ciancio, María +2 more
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The Curriculum Journal, EarlyView.Abstract This study explored how lecturers in a post‐92 UK university conceptualise and enact decolonial curriculum principles within their teaching and programme design. Drawing on semi‐structured interviews with academic staff across multiple disciplines, the research adopts a qualitative, phenomenologically informed approach to examine the interplay
Reece Sohdi
wiley +1 more source
Resonance‐induced restoration of rock permeability degraded by heavy components of crude oil
Deep Underground Science and Engineering, EarlyView.Resonance‐induced changes occur in filtration properties of sedimentary rocks in crude paraffin oil flow under acoustic vibrations. Experimental data on (a) pressure drop; (b) permeability; (c) pressure at the rock inlet; and (d) pressure at the rock outlet are presented.
Evgenii Riabokon +6 more
wiley +1 more source