Results 21 to 30 of about 834,256 (322)

Modelling the Duration of the First Job Using Bayesian Accelerated Failure Time Models

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2017
In this paper, the duration of the first job of young people aged 18–30 has been analyzed. The aim of the work is to find the distribution which best describes the investigated phenomenon.
Wioletta Grzenda
doaj   +1 more source

Symmetric and Asymmetric Configurations for a Multilevel Inverter Using Less Number of Power Switches [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2018
This paper proposes a multilevel inverter that produces many steps in output voltage using fewer power electronic switches. The configuration of the proposed inverter is modular and extendable.
Farzad Sedaghati, Naser Hashemipour
doaj   +1 more source

Single Phase T-Type Multilevel Inverters for Renewable Energy Systems, Topology, Modulation, and Control Techniques: A Review

open access: yesEnergies, 2022
Multilevel inverters (MLI) consist of a wide range of power converters. They have many designs and have been introduced with different circuit topologies such as neutral point clamped, diode clamped, cascaded H-bridges, and flying capacitors.
Mustafa F. Mohammed, Mohammed A. Qasim
doaj   +1 more source

The effect of individual and classroom moral disengagement on antisocial behaviors in Colombian adolescents: A multilevel model

open access: yesFrontiers in Education, 2022
The present study examined the predictive effect of moral disengagement (within and between classrooms) on antisocial behaviors in Colombian adolescents, as well as the interaction of moral disengagement with classroom composition by age, socioeconomic ...
Maryluz Gomez Plata   +11 more
doaj   +1 more source

Review of Five-Level Front-End Converters for Renewable-Energy Applications

open access: yesFrontiers in Energy Research, 2020
With the objective of minimizing environment and energy issues, distributed renewable-energy sources have reached remarkable advancements along the last decades, with special emphasis on wind and solar photovoltaic installations, which are deemed as the ...
Vitor Monteiro   +5 more
doaj   +1 more source

Multilevel Analysis of the Risk Factors in High-Risk Health Behavior among Korean Adolescents [PDF]

open access: yesOsong Public Health and Research Perspectives, 2018
Objectives To examine health behaviors among Korean adolescents with a focus on both individual and school-based factors, specifically in relation to predictors of high-risk groups.
Eun Gyeong Kim
doaj   +1 more source

Parallel Multilevel Preconditioners [PDF]

open access: yesMathematics of Computation, 1990
In this paper, we provide techniques for the development and analysis of parallel multilevel preconditioners for the discrete systems which arise in numerical approximation of symmetric elliptic boundary value problems. These preconditioners are defined as a sum of independent operators on a sequence of nested subspaces of the full approximation space.
Bramble, J.H.   +2 more
openaire   +2 more sources

Institutional Changes in Financial Systems of Poland and the Czech Republic

open access: yesComparative Economic Research, 2013
Over the past 23 years the financial sectors in both Poland and the Czech Republic have changed beyond recognition. The process of transformation was a tough and challenging task in both countries.
Joanna Romaniuk, Anna Sznajderska
doaj   +1 more source

Modular SEPIC-Based Isolated dc–dc Converter with Reduced Voltage Stresses across the Semiconductors

open access: yesEnergies, 2022
This paper presents the theoretical analysis, experimental results and generalized structure for N modules of an isolated dc–dc SEPIC converter. The structure comes from the integration of N conventional SEPIC converters based on the input-series and ...
Marcos Vinicius Mosconi Ewerling   +2 more
doaj   +1 more source

Recent Advances and Industrial Applications of Multilevel Converters

open access: yesIEEE transactions on industrial electronics (1982. Print), 2010
Multilevel converters have been under research and development for more than three decades and have found successful industrial application. However, this is still a technology under development, and many new contributions and new commercial topologies ...
S. Kouro   +8 more
semanticscholar   +1 more source

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