Search results for " method"
showing 10 items of 10455 documents
Multi-objective actuator placement optimization for local sound control evaluated in a stochastic domain
2011
A method to find optimal locations and properties of anti-noise actuators in local noise control system is considered. The local noise control performance is approximated by a finite element method based approach, that attempts to estimate the average performance of optimal active noise control (ANC) system. The local noise control uses a fixed number of circular actuators that are located on the boundary of a three-dimensional enclosed acoustic space. Actuator signals are used to minimize the known harmonic noise at specified locations. The average noise reduction is maximized at two frequency ranges by adjusting the anti-noise actuator configuration, which is a non-linear multi-objective …
Multi-objective actuator placement optimization for local sound control evaluated in a stochastic domain
2013
A method to find optimal locations and properties of anti-noise actuators in a local noise control system is considered. The local noise control performance is approximated by an approach based on a finite element method, attempting to estimate the average performance of an optimal active noise control (ANC) system. Local noise control uses a fixed number of circular actuators that are located on the boundary of a three-dimensional enclosed acoustic space. Actuator signals are used to minimize the known harmonic noise at specified locations. The average noise reduction is maximized at two frequency ranges by adjusting the anti-noise actuator configuration, which is a non-linear multi-object…
Discrete element model for viscoelastic materials with brittle fracture : applications on glacier dynamics
2017
Numerical simulation of low temperature thermal conductance of corrugated nanofibers
2010
Management Maps of Chilean Listed Companies. Quantitative Analysis
2017
Este artículo evalúa las clases de gestión adoptadas por las empresas localizadas en la región de Las Condes (Chile) a través de la metodología contable de los gráficos radiales. Esta metodología aplicada sobre dos empresas que utilizan dos diferentes clases de gestión, justifica las relaciones que existen entre los indicadores radiales y financieros. Los resultados contrastados con los precios de las acciones de las empresas analizadas en el mercado secundario confirman la validez de las relaciones anteriores. El análisis realizado ha permitido obtener generalizaciones sobre las distintas clases de gestión en la comuna de Las Condes, de acuerdo con el sentido multidimensional de los gráfic…
The Accounting Maps of Management of Chilean Listed Companies: Qualitative Analysis
2017
El artículo analiza las clases de gestión realizadas por las empresas cotizadas chilenas localizadas en los espacios administrativos de Chile. La orientación del análisis realizado considera que el factor cultural de la región donde están localizadas las empresas chilenas condiciona la clase de gestión desarrollada por dichas empresas. El desarrollo de esta hipótesis se realiza aplicando la metodología contable de los gráficos radiales. Las tensiones existentes entre los periodos medios de maduración representados en un gráfico radial asumen la existencia de un factor cultural en las transacciones realizadas por las empresas en una región y supone que la toma de decisión en un área tiene ef…
Challenges in Marketing Communications During the COVID-19 Pandemic
2022
The purpose of this study is to explore how tourism and hospitality firms managed marketing communications (marcom) since the COVID-19 outbreak and to propose a conceptual framework on marcom challenges that the pandemic crisis has brought to the industry. In-depth interviews were conducted with tourism and hospitality managers in Croatia, a destination that registered remarkable tourism results in 2021. The proposed conceptual framework reflects the adaptation process and major changes in B2B and B2C communication since the COVID-19 outbreak on one hand and resulting strategic opportunities for marcom managers on the other, discussed in terms of practical implications. To the best of the a…
Accountability in couple therapy for depression : a mixed methods study in a naturalistic setting in Finland
2013
High-precision mass measurements for the isobaric multiplet mass equation atA= 52
2017
Masses of $^{52}$Co, $^{52}$Co$^m$, $^{52}$Fe, $^{52}$Fe$^m$, and $^{52}$Mn have been measured with the JYFLTRAP double Penning trap mass spectrometer. Of these, $^{52}$Co and $^{52}$Co$^m$ have been experimentally determined for the first time and found to be more bound than predicted by extrapolations. The isobaric multiplet mass equation for the $T=2$ quintet at $A=52$ has been studied employing the new mass values. No significant breakdown (beyond the $3\sigma$ level) of the quadratic form of the IMME was observed ($\chi^2/n=2.4$). The cubic coefficient was 6.0(32) keV ($\chi^2/n=1.1$). The excitation energies for the isomer and the $T=2$ isobaric analogue state in $^{52}$Co have been d…
Modeling friction between shearing brittle surfaces with a discrete element method
2018
Hauraiden materiaalien murtuminen on eräs materiaalifysiikan peruskysymyksistä. Sille ei ole vieläkään olemassa täydellistä teoreettista selitystä, joten ennusteiden tekeminen nojaa vahvasti kokeisiin ja niihin perustuviin numeerisiin malleihin. Tässä työssä suunnittelemme ja toteutamme diskreettielementtimenetelmän sellaisen fysikaalisen systeemin tutkimiseen, jossa kaksi haurasta pintaa leikkaavat toisiaan. Keskitymme erityisesti siihen kuinka erilaiset voimamallit sisäiselle kitkalle vaikuttavat materiaalin ulkoiseen kitkaan. Käyttämällä graniittia koemateriaalina huomaamme, että sen ulkoinen kitka riippuu voimakkaasti sen sisäisestä kitkasta, kun ulkoinen paine on lähellä materiaalin pu…