Results 101 to 110 of about 78,969 (302)

A novel three-phase time domain load modelling technique using Instantaneous Symmetrical Components

open access: yes, 2004
This paper presents a new time domain load modelling technique based on the method of Instantaneous Symmetrical Components (ISC) for three-phase unbalanced and distorted power system loads. ISC is used here to obtain instantaneous symmetrical voltage and
Kaypmaz, A.   +2 more
core   +1 more source

Risk Prediction Models for Recurrence After Curative Treatment of Early‐Stage or Locally Advanced Lung Cancer: A Systematic Review

open access: yesAging and Cancer, EarlyView.
This systematic review synthesizes prognostic models for survival and recurrence in resected non‐small cell lung cancer. While many models demonstrate moderate to good discrimination, few are externally validated and reporting quality is variable, limiting clinical applicability and highlighting the need for robust, transparent model development ...
Evangeline Samuel   +4 more
wiley   +1 more source

Stability Analysis of Bipolar LVDC Grid

open access: yesInternational Transactions on Electrical Engineering and Computer Science, 2022
The study and regulation of bipolar DC structures covered by asymmetrical action, the DC symmetric part approach is implemented. This approach is an expansion of the standard principle of symmetrical components in three phase AC-controlled networks.
T. Raghu, D. Rajesh Reddy
doaj  

Some simple tests of mixtures with symmetrical components [PDF]

open access: yesCommunications in Statistics, 1973
Methods are described for testing whether an observed sample is consistent with it being from a mixture (in unknown proportions) of two specified symmetrical populations. The tests use only very simple sample statistics. Possible tests for use when more complete sample data are available are also mentioned.
openaire   +1 more source

Spinal Cord Infarction Versus Idiopathic Transverse Myelitis: Clinical, Radiological, and Functional Insights From a Retrospective Cohort Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Spinal cord infarction (SCI) is a rare but devastating myelopathy, characterized by a high disability rate and an unfavorable prognosis. It has often been underdiagnosed and misdiagnosed as idiopathic transverse myelitis (ITM). This study aimed to describe the clinical features, radiological biomarkers, treatments, and functional ...
Zeqiang Ji   +13 more
wiley   +1 more source

Studies Between Clarke Transformation And Symmetrical Components For Fault Analysis Of Power Distribution System Using PSCAD [PDF]

open access: yes, 2016
Fault analysis studies are essential analytic tool for designing and planning of power systems. They are considered the most important and complicated matter in power engineering.
Abdulzahra, Ali Abdulhassan
core  

Implementation of three-phase transformer model in radial load-flow analysis

open access: yesAin Shams Engineering Journal, 2013
This paper presents an efficient approach for developing three-phase transformer admittance matrices in the radial power-flow analysis. The proposed transformer model overcomes the singularity problem of the nodal admittance submatrices of ungrounded ...
Mamdouh Abdel-Akher, Karar Mahmoud
doaj   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito   +14 more
wiley   +1 more source

Decomposition of unbalanced three-phase system to a system of symmetrical components [PDF]

open access: yes, 2016
Rad je podijeljen na tri poglavlja i zaključak. Drugo poglavlje opisuje elektroenergetske sustave, treće poglavlje opisuje razvoj studije o metodi simetričnih komponenti te su navedeni primjeri rješavanja, u četvrtom poglavlju opisan je rastav metode ...
Banožić, Marko
core  

Symmetrical Components Definition and Analyze for Power Electronic Converters in Non-sinusoidal Conditions

open access: yes, 2019
Symmetrical Components Definition and Analyze for Power Electronic Converters in Non-sinusoidal ConditionsAs symmetrical components are very useful tools for power system analyzing in unbalance condition and defining phasor is hard for power electronics ...
Mahdi Mansouri (7356812)
core   +1 more source

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