Search results for "Multilevel"

Can visualization alleviate dichotomous thinking? Effects of visual representations on the cliff effect

2021

Common reporting styles for statistical results in scientific articles, such as $p$ p -values and confidence intervals (CI), have been reported to be prone to dichotomous interpretations, especially with respect to the null hypothesis significance testing framework. For example when the $p$ p -value is small enough or the CIs of the mean effects of a studied drug and a placebo are not overlapping, scientists tend to claim significant differences while often disregarding the magnitudes and absolute differences in the effect sizes. This type of reasoning has been shown to be potentially harmful to science. Techniques relying on the visual estimation of the strength of evidence have been recom…

The Convenience of Applying Multilevel Modeling on Real Estate Valuation

2015

There are many economic agents interested in valuing big amounts of real estate assets. One of these agents are the financial institutions, which must value their vast mortgage portfolios periodically. In this paper we analyze the use of the Hierarchical Linear Model to value real estate portfolios. This model gives valuable information compared with the traditional OLS models and is more accurate, as it takes into account the hierarchical structure of the data. DOI: http://dx.doi.org/10.4995/ICBM.2015.1314

A spatial multilevel analysis of Italian SMEs Productivity

2009

In this paper, we adapt multilevel analysis methods to investigate the spatial variability of SMEs productivity across the Italian territory, and account for differences in the socio-economic context. Our results suggest that to properly capture the variability of the data, it is important to allow for both spatial mean and slope effects. Social decay has the expected negative impact. However, while this effect is larger on firms with smaller capital intensity, firms with higher capital intensity seem to be less affected by geography. Greater territorial heterogeneity emerges among those firms with lower capital to labour ratios.

A Spatial Multilevel Analysis of Italian SMEs Productivity

2009

Abstract In this paper, we adapt multilevel analysis methods to investigate the spatial variability of SMEs' productivity across the Italian territory, and account for differences in the socio-economic context. Our results suggest that to properly capture the variability of the data, it is important to allow for both spatial mean and slope effects. Social decay has the expected negative impact. However, while this effect is larger on firms with smaller capital intensity, firms with higher capital intensity seem to be less affected by geography. Greater territorial heterogeneity emerges among those firms with lower capital to labour ratios. Une analyse spatiale a plusieurs niveaux de la prod…

La proficua "irrequietezza" del Diritto ecclesiastico. Primi cenni

2012

Economic freedom and fundamental rights: freedom to conduct business in the multilevel european legal system

2012

  La libertad de empresa es utilizada como pretexto para ilustrar las relaciones y jerarquías entre libertades económicas comunitarias y derechos fundamentales en el ordenamiento multinivel europeo. Su estrecha relación con las libertades económicas comunitarias y con el objetivo del mercado interior, han dotado a la libertad de empresa de una especial fortaleza a la hora de dirimir sus eventuales conflictos con otros derechos acogidos aparentemente en pie de igualdad en la reciente redefinición de los objetivos de la UE. Por otro lado, cuando esta primacía se transplanta al ordenamiento interno  se corre el riesgo de alterar los equilibrios del sistema de derechos de los Estados, anclados …

Predictors and mediators of differences in soft drinks consumption according to gender and plans of further education among Norwegian secondary-schoo…

2013

AbstractObjectiveTo explore mediators of gender and educational differences in sugar-sweetened soft drinks consumption (SDC) and whether gender and level of future education moderate the associations of accessibility, modelling, attitudes and preferences with SDC.DesignA cross-sectional school-based survey within the Fruits and Vegetables Makes the Marks (FVMM) project from 2005.SettingThe questionnaires were completed by the pupils in the classroom guided by a trained project worker during one class session. The questionnaire included questions on SDC (times/week), the potential mediators and moderators. Multilevel linear regression models were used to calculate the mediating and moderatin…

Does country-level gender equality explain individual risk of intimate partner violence against women? A multilevel analysis of individual heterogene…

2019

Abstract Background Gender equality is widely accepted as an important explanatory factor for the occurrence of intimate partner violence (IPV) against women. However, the relationship is not straightforward, as high country-level gender equality is not always associated with lower IPV prevalence. We apply ‘multilevel analysis of individual heterogeneity and discriminatory accuracy’ (MAIHDA) to (i) quantify the extent to which the country of residence determines individual risk of IPV and (ii) investigate the association between country-level gender equality and individual experience of IPV, and to which extent this association explains the observed between-country differences. Methods Usin…

Four-Level Three-Phase Inverter With Reduced Component Count for Low and Medium Voltage Applications

2021

This paper proposes a novel three-phase topology with a reduced component count for low- and medium-voltage systems. It requires three bidirectional switches and twelve unidirectional switches for producing four-level voltages without using flying capacitors or clamping diodes, reducing the size, cost, and losses. Removing flying capacitors and clamping diodes allows it to simplify control algorithms and increase the reliability, efficiency, and lifetime. A modified low-frequency modulation (LFM) scheme is developed and implemented on the proposed topology to produce a staircase voltage with four steps. Further, a level-shifted pulse width modulation (LSPWM) is used to reduce the filter siz…

Dead-time impact on the harmonic distortion and conversion efficiency in a three-phase five-level Cascaded H-Bridge inverter: mathematical formulatio…

2023

To avoid leg short-circuit in inverters, dead time must be introduced on leg gate signals. Dead time affects the inverter output voltage fundamental harmonic amplitude, voltage harmonic distortion and inverter efficiency by introducing additional voltage drops. In this regard, dead time effects have been widely investigated for traditional two-level three-phase voltage source inverters in the literature but not extensively for multilevel topology structures. This paper provides a detailed analysis of dead time impact on the harmonic distortion and efficiency of Cascaded H-Bridges Multilevel Inverters (CHBMIs). For this purpose, a general mathematical formulation to determine voltage drop du…