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The regional concentration of industries and the performance of firms: a multilevel approach
(2010)
This paper presents the results of a study whose objective was to understand how location within industrial concentrations, like clusters or industrial districts, affects the financial performance of firms. In its theoretical ...
Country effect on firm performance: a multilevel approach
(Elsevier Science Inc, 2011-03)
The debate about the impact of environmental constraints on firm performance in developing countries is relevant for business enterprises and governments. However, the academic literature offers limited empirical evidence ...
Multilevel Models For The Analysis Of Angle-specific Torque Curves With Application To Master Athletes
(DE GRUYTER OPEN LTDWARSAW, 2015)
A Grid-Connected Multilevel Converter for Interfacing PV Arrays and Energy Storage Devices
(IEEEVienna, 2013-11)
This paper presents a design procedure and a
control strategy for a grid-connected single-phase multilevel
converter. The proposed system uses two series connected H-bridge modules, one fed by photovoltaic panels, the ...
Control of wind energy conversion systems based on the modular multilevel matrix converter
(IEEE Institute of Electrical and Electronics Engineers, 2017)
The nominal power of single wind energy conversion systems (WECS) has been steadily increasing, now reaching power ratings close to 10 MW. In the power conversion stage, medium-voltage power converters are replacing the ...
Modeling, control, and reduced-order representation of modular multilevel converters
(Elsevier Science Sa, 2018-10)
This paper presents a reduced-order model of the modular multilevel converter (MMC) for electromechanical transient simulations and small-signal analysis. The MMC model is firstly developed in detail; then, simplifications ...
Cyberbullying Among Chilean Students and the Protective Effects of Positive School Communities
(2017)
Cyberbullying is a type of bullying that involves the use of technology to harm other students. Most researchers have examined individual-level characteristics, but the perception of school climate and school characteristics ...