Results 41 to 50 of about 834,256 (322)

Conventional Space-Vector Modulation Techniques versus the Single-Phase Modulator for Multilevel Converters [PDF]

open access: yes, 2010
Space-vector modulation is a well-suited technique to be applied to multilevel converters and is an important research focus in the last 25 years. Recently, a single-phase multilevel modulator has been introduced showing its conceptual simplicity and
Carrasco Solís, Juan Manuel   +6 more
core  

Power loss investigation in HVDC for cascaded H-bridge multilevel inverters (CHB-MLI) [PDF]

open access: yes, 2015
In the last decade, the use of voltage-source multilevel inverters in industrial and utility power applications has been increased significantly mainly due to the many advantages of multilevel inverters, compared to conventional two level inverters ...
Alamri, B, Darwish, M
core   +1 more source

Hip Morphology–Based Osteoarthritis Risk Prediction Models: Development and External Validation Using Individual Participant Data From the World COACH Consortium

open access: yesArthritis Care &Research, EarlyView.
Objective This study aims to develop hip morphology‐based radiographic hip osteoarthritis (RHOA) risk prediction models and investigates the added predictive value of hip morphology measurements and the generalizability to different populations. Methods We combined data from nine prospective cohort studies participating in the Worldwide Collaboration ...
Myrthe A. van den Berg   +26 more
wiley   +1 more source

Stability of Crystal Plasticity Constitutive Models: Observations in Numerical Studies and Analytical Justification

open access: yesMetals
In designing accurate constitutive models, it is important to investigate the stability of the response obtained by means of these models to perturbations in operator and input data because the properties of materials at different structural-scale levels
Alexey Shveykin   +2 more
doaj   +1 more source

Disease Focused Integrated Care – a New Model of Healthcare Delivery for the Treatment of Skin Cancer

open access: yesInternational Journal of Integrated Care, 2023
Introduction: As the most common cancer in Australia, skin cancer generates a considerable health burden. This study outlines the establishment of a new model of integrated care for the diagnosis and management of skin cancer.
Maya Deva   +10 more
doaj   +1 more source

A hybrid multilevel converter for medium and high voltage applications [PDF]

open access: yes, 2010
This paper investigates the suitability of the hybrid multilevel converter for medium and high voltage application. The converter operation, modulation, and capacitor voltage balancing method are described in detail.
Adam, Grain Philip   +4 more
core  

The capacity of multilevel threshold functions [PDF]

open access: yes, 1988
Lower and upper bounds for the capacity of multilevel threshold elements are estimated, using two essentially different enumeration techniques. It is demonstrated that the exact number of multilevel threshold functions depends strongly on the relative ...
Abu-Mostafa, Yaser S., Olafsson, Sverrir
core   +1 more source

Multilevel graph embedding

open access: yesNumerical Linear Algebra with Applications, 2020
AbstractThe goal of the present paper is the design of embeddings of a general sparse graph into a set of points in for appropriated ≥ 2. The embeddings that we are looking at aim to keep vertices that are grouped in communities together and keep the rest apart. To achieve this property, we utilize coarsening that respects possible community structures
Benjamin Quiring, Panayot S. Vassilevski
openaire   +3 more sources

Enabling Digital Continuity in Virtual Manufacturing for Eco‐Efficiency Assessment of Lightweight Structures by Means of a Domain‐Specific Structural Mechanics Language: Requirements, Idea and Proof of Concept

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a solver‐agnostic domain‐specific language (DSL) for computational structural mechanics that strengthens interoperability in virtual product development. Using a hierarchical data model, the DSL enables seamless exchange between diverse simulation tools and numerical methods.
Martin Rädel   +3 more
wiley   +1 more source

Illuminating the shadows: the role of private supplementary tutoring on student math performance in PISA 2022

open access: yesLarge-scale Assessments in Education
Recent decades have witnessed a global expansion of private supplementary tutoring, known as shadow education—additional support in academic subjects that takes place outside of regular school hours.
Mehmet Karakus   +3 more
doaj   +1 more source

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