-
341
Machine learning based multi-method interpretation to enhance dissolved gas analysis for power transformer fault diagnosis
Published 2024-02-01“…Various DGA interpretation techniques have been proposed in the literature, including the Doernenburg Ratio Method (DRM), Roger Ratio Method (RRM), IEC Ratio Method (IRM), Duval Triangle Method (DTM), and Duval Pentagon Method (DPM). While these techniques are well documented and widely used by industry, they may lead to different conclusions for the same oil sample. …”
Get full text
Article -
342
Difference analysis of dissolved gas in natural ester insulating fluids under typical electrical and thermal faults: An experimental study
Published 2023-12-01“…Finally, the fault diagnosis methods are used to determine the fault gas data, and the Duval pentagon is modified and improved according to the gas generation characteristics of natural esters.…”
Get full text
Article -
343
Determining the Remaining Functional Life of Power Transformers Using Multiple Methods of Diagnosing the Operating Condition Based on SVM Classification Algorithms
Published 2024-01-01“…To determine the condition of power transformers, a number of methods are presented based on the combination of the combined Duval pentagon (PDC) method and ethylene concentration (C<sub>2</sub>H<sub>4</sub>) to determine the fault condition, the combination of the degree of polymerisation (DP) and moisture to determine the condition of the cellulose insulation and the use of the oil quality index (OQIN) to determine the condition of the oil. …”
Get full text
Article -
344
Ion-induced soot nucleation using a new potential for curved aromatics
Published 2020“…The flexoelectric charge polarization of cPAHs caused by pentagon integration was included through the introduction of off-site virtual atoms, and enhanced dispersion interaction parameters were fitted. …”
Get full text
Journal Article -
345
Darurat Di Tanah Melayu Dan Amerika Syarikat, 1948-1960
Published 2019“…Fokus akan diberikan kepada tindakan-tindakan Amerika Syarikat yang timbul kesan daripada reaksinya terhadap perisytiharan darurat ini dengan bersumberkan dokumen-dokumen seperti FRUS, NSC Series, The Department of State Bulletin, Pentagon Papers, laporan daripada CIA dan dokumen-dokumen British serta memoir yang diperoleh dari arkib sama ada di dalam atau luar negara. …”
Get full text
Thesis -
346
Gold nanoplates for a localized surface plasmon resonance-based boric acid sensor
Published 2017“…For the sensing material, gold (Au) nanoplates with a variety of shapes, i.e., triangular, hexagonal, truncated pentagon and flat rod, were prepared using a seed-mediated growth method. …”
Get full text
Article -
347
A Comprehensive Investigation of the Properties of a Five-Phase Induction Motor Operating in Hazardous States in Various Connections of Stator Windings
Published 2021-03-01“…The paper studies a five-phase induction motor, a suitable alternative for electric vehicles, due to its better properties such as better torque, smoother ripple, better fault tolerance, and the possibility of connecting stator windings to star, pentagon, and pentagram. The fundamentals of the article are to find out how this engine behaves in fault states, which can be called hazardous states. …”
Get full text
Article -
348
Field emission characteristics of a nanotube-fullerene composite: a theoretical study
Published 2021-01-01“…First-principles calculations are used to investigate electronic and field emission characteristics of a nanotube-fullerene composite (a single-walled carbon nanotube (CNT) with a C _20 molecule), which indicate that emission currents of the CNT-fullerene composite under external electric fields are roughly four times higher than those of original carbon nanotubes, and its pentagon on the apex is the highest probable positions for electron emission. …”
Get full text
Article -
349
Orientation Ordering and Chiral Superstructures in Fullerene Monolayer on Cd (0001)
Published 2020-07-01“…In the (2√3 × 2√3) R30° domain, orientational disorder of the individual C<sub>60</sub> molecules with either pentagon, hexagon, or 6:6 bond facing up has been observed. …”
Get full text
Article -
350
Self-Consistent Schrödinger-Poisson Study of Electronic Properties of GaAs Quantum Well Wires with Various Cross-Sectional Shapes
Published 2021-05-01“…Circle, square, triangle and pentagon geometries are considered for the wire cross-sectional shape. …”
Get full text
Article -
351
An Applied Study on Integration Edges of Failure and TOPSIS to Educational Environment Safety Assessment: A Case Study
Published 2022-07-01“…These points have been calculated for a bunch of listed schools that detected safety faults, and it also takes the form of the 'Jeopardous Pentagon' to calculate 'EoF Integration Mode'. It is an overall safety assessment to indicate performances region by region. …”
Get full text
Article -
352
Effects of Aperture Shape on Absorption Property of Acoustic Metamaterial of Parallel-Connection Helmholtz Resonator
Published 2023-02-01“…The sequence of resonance frequency from low to high were round, regular hexagon, square, regular triangle and regular pentagon. Moreover, the reason for these phenomena was analyzed by the distributions of sound pressure, acoustic velocity and temperature. …”
Get full text
Article -
353
Comparison of Dissolved Gases in Mineral and Vegetable Insulating Oils under Typical Electrical and Thermal Faults
Published 2016-04-01“…Four different classic diagnosis methods were applied: ratio method, graphic method, and Duval’s triangle and Duval’s pentagon method. These confirmed that the diagnosis methods developed for mineral oil were not fully appropriate for diagnosis of electrical and thermal faults in vegetable insulating oils and needs some modification. …”
Get full text
Article -
354
KINERJA PENDIDIKAN MENENGAH DI INDONESIA DALAM MENINGKATKAN MUTU PENDIDIKAN
Published 2014-11-01“…In order that the planning formulated at the national level is supported and implemented in the education ranks below, it is recommended to implement an optimal management, "Planning Philosophy", as depicted in the "Sustainable development planning pentagon" in this article.  Pendidikan merupakan suatu â€investasiâ€. …”
Get full text
Article -
355
Regional Gray Matter Volume Changes in Parkinson’s Disease with Orthostatic Hypotension
Published 2021-02-01“…The right inferior temporal volume was positively correlated with the Qualitative Scoring MMSE Pentagon Test (QSPT) score, reflecting visuospatial/visuoperceptual function, and negatively correlated with the Composite Autonomic Severity Score (CASS). …”
Get full text
Article -
356
Does the Accessibility of Regional Internal and External Traffic Play the Same Role in Achieving Anti-Poverty Goals?
Published 2022-01-01“…Rural poverty was identified by the pentagon of livelihoods to measure the Multidimensional Development Index (MDI). …”
Get full text
Article -
357
-
358
Mechanisms, severity and ignitability factors, explosibility testing method, explosion severity characteristics, and damage control for dust explosion: a concise review
Published 2021“…Furthermore, the dust explosion mechanism reveals that dust particles undergo explosion when confined and or mixed oxidants, ignition sources or heat as described in the "explosive pentagon"concept. To address the risks posed by dust explosions, reduce ignitions and the severity of these hazards, numerous testing methods have been proposed or developed. …”
Get full text
Conference or Workshop Item -
359
Application of Dissolved Gas Analysis in Assessing Degree of Healthiness or Faultiness with Fault Identification in Oil-Immersed Equipment
Published 2020-09-01“…The accuracy and effectiveness of the proposed fuzzy techniques are better than those of the IEC60599 and Rogers methods, and they are comparable to those of the Duval Triangle 1 and Pentagon 1 methods using the six IEC faults. Results from DOF evaluation have shown electrical faults to be more impactful relative to the rest.…”
Get full text
Article -
360
The Impact of Sex on the Neurocognitive Functions of Patients with Parkinson’s Disease
Published 2021-10-01“…Among female participants, patients with PD showed worse performance on the category score of the Modified Wisconsin Card Sorting Test (<i>p</i> < 0.001), SS (<i>p</i> < 0.001), and pentagon copying (<i>p</i> < 0.001) than NCs. After controlling for the effects of age and years of education, Hoehn and Yahr stage was found to predict the performance of the Color Trails Test part A (βA = 0.241, pA = 0.036), Stroop Color and Word Test (β = −0.245, <i>p</i> = 0.036), and DSS (β = −0.258, <i>p</i> = 0.035) in men with PD. …”
Get full text
Article