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107 Results Found

  • Article
  • Open Access
2 Citations
5,362 Views
24 Pages

GPU Acceleration of the Most Apparent Distortion Image Quality Assessment Algorithm

  • Joshua Holloway,
  • Vignesh Kannan,
  • Yi Zhang,
  • Damon M. Chandler and
  • Sohum Sohoni

25 September 2018

The primary function of multimedia systems is to seamlessly transform and display content to users while maintaining the perception of acceptable quality. For images and videos, perceptual quality assessment algorithms play an important role in deter...

  • Article
  • Open Access
3 Citations
2,091 Views
35 Pages

Single-Step Response and Determination of Power Components Mean Values of PES Using p-q Method during Transients

  • Branislav Dobrucký,
  • Slavomír Kaščák,
  • Jozef Šedo,
  • Michal Praženica and
  • Patrik Resutík

16 November 2022

This paper deals with the quasi-instantaneous determination of an apparent-, active-, and reactive (i.e., blind and distortion) power mean values, including total power factor, total harmonic distortion, and phase shift of fundamentals of power elect...

  • Article
  • Open Access
3 Citations
1,439 Views
17 Pages

Power Components Mean Values Determination Using New Ip-Iq Method for Transients

  • Branislav Dobrucký,
  • Slavomír Kaščák and
  • Jozef Šedo

3 June 2024

This paper deals with the quasi-instantaneous determination (in a single-step response time) of apparent, active, and reactive (i.e., blind and distortion) power mean values including the total power factor, total harmonic distortion, and phase shift...

  • Review
  • Open Access
1,015 Views
25 Pages

7 February 2025

This review paper describes and compares the practical methods that make it possible to calculate an average value of apparent, active, and reactive (i.e., blind and distorted) power in each calculation step. In addition to two methods, pq and...

  • Article
  • Open Access
6 Citations
3,857 Views
15 Pages

Relationship between Buchholz’s Apparent Power and Instantaneous Power in Three-Phase Systems

  • Vicente León-Martínez,
  • Joaquín Montañana-Romeu,
  • Elisa Peñalvo-López and
  • Iván Valencia-Salazar

5 March 2020

Similarly to how Steinmetz developed his theory of alternating current in single-phase sinusoidal systems, a few formal relationships between expressions of the instantaneous and Buchholz’s apparent power in three-phase systems were identified...

  • Article
  • Open Access
13 Citations
4,024 Views
45 Pages

Powers and Power Factor in Non-Sinusoidal and Non-Symmetrical Regimes in Three-Phase Systems

  • Petre-Marian Nicolae,
  • Ileana-Diana Nicolae and
  • Marian-Ştefan Nicolae

14 July 2022

The paper presents several theories related to definitions of powers and power factors in non-sinusoidal and non-symmetrical regimes. The theories must meet some requirements: (a) to facilitate the measuring of power quantities by using acquired elec...

  • Article
  • Open Access
1 Citations
2,273 Views
10 Pages

Study of the Distortion of the Indirect Angular Measurements of the Calcaneus Due to Perspective: In Vitro Testing

  • Isidoro Espinosa-Moyano,
  • María Reina-Bueno,
  • Inmaculada C. Palomo-Toucedo,
  • José Rafael González-López,
  • José Manuel Castillo-López and
  • Gabriel Domínguez-Maldonado

7 April 2021

The study of the foot is relevant in kinematic analyses of gait. Images captured through a lens can be subjected to various aberrations or distortions that affect the measurements. An in vitro study was performed with a rearfoot simulator to compare...

  • Article
  • Open Access
11 Citations
3,653 Views
13 Pages

An oscillating drop rheometer capable of operating under conditions of high pressure and high temperature has been built. The oscillating drop mechanism was able to support pressures as high as 1300 bar and successfully performed oscillations at cons...

  • Article
  • Open Access
2 Citations
2,973 Views
16 Pages

Formulation of the Phasors of Apparent Harmonic Power: Application to Non-Sinusoidal Three-Phase Power Systems

  • Pedro A. Blasco,
  • Rafael Montoya-Mira,
  • José M. Diez,
  • Rafael Montoya and
  • Miguel J. Reig

19 July 2018

In this work, the expression of the phasor of apparent power of harmonic distortion is formulated in the time domain. Applying this phasor along with the phasor of apparent unbalance power allows us to obtain a new set of phasors that include all of...

  • Article
  • Open Access
20 Citations
5,053 Views
18 Pages

Vector Geometric Algebra in Power Systems: An Updated Formulation of Apparent Power under Non-Sinusoidal Conditions

  • Francisco G. Montoya,
  • Raúl Baños,
  • Alfredo Alcayde,
  • Francisco Manuel Arrabal-Campos and
  • Javier Roldán-Pérez

4 June 2021

Traditional electrical power theories and one of their most important concepts—apparent power—are still a source of debate, because they present several flaws that misinterpret the power-transfer and energy-balance phenomena under distorted grid cond...

  • Article
  • Open Access
1 Citations
1,807 Views
12 Pages

We prove the consistency of the different approaches for deriving the black hole radiation for the spherically symmetric case inside the theory of Massive Gravity. By comparing the results obtained by using the Bogoliubov transformations with those o...

  • Article
  • Open Access
14 Citations
4,532 Views
16 Pages

Performance of Soil Moisture Sensors at Different Salinity Levels: Comparative Analysis and Calibration

  • Qiuju Qi,
  • Hai Yang,
  • Quanping Zhou,
  • Xiaole Han,
  • Zhengyang Jia,
  • Yuehua Jiang,
  • Zi Chen,
  • Lili Hou and
  • Shijia Mei

29 September 2024

Soil dielectric sensors have been widely used to obtain real-time soil moisture data, which are important for water resource management. However, soluble salts in the soil significantly affect the accuracy of these sensor measurements. Therefore, it...

  • Article
  • Open Access
1 Citations
2,128 Views
19 Pages

Numerical Simulation and Experimental Analysis on Seam Feature Size and Deformation for T-Joint Laser–GMAW Hybrid Welding

  • Nai-Kun Wei,
  • Jin Shi,
  • Run-Dang Yang,
  • Jun-Tong Xi,
  • Xiao-Meng Luo,
  • Xu-Yue Yin and
  • Rui-Xue Zhang

31 December 2023

As an innovative technique, laser–GMAW hybrid welding manifests significant superiority in enhancing welding productivity and quality, albeit the optimization of process parameters poses a challenge for practical application. The present manusc...

  • Article
  • Open Access
9 Citations
3,733 Views
20 Pages

Impacts of Harmonic Voltage Distortions on the Dynamic Behavior and the PRPD Patterns of Partial Discharges in an Air Cavity Inside a Solid Dielectric Material

  • Gustavo de Oliveira Machado,
  • Luciano Coutinho Gomes,
  • Augusto Wohlgemuth Fleury Veloso da Silveira,
  • Carlos Eduardo Tavares and
  • Darizon Alves de Andrade

4 April 2022

The monitoring of partial discharges (PDs) is one of the main methods used worldwide for evaluation and diagnosis of the insulation conditions in equipment powered by medium and high voltages. The occurrence of PDs is usually an indication of the app...

  • Article
  • Open Access
10 Citations
3,096 Views
14 Pages

Visual Duration but Not Numerosity Is Distorted While Running

  • Irene Petrizzo,
  • Giovanni Anobile,
  • Eleonora Chelli,
  • Roberto Arrighi and
  • David Charles Burr

There is increasing evidence that action and perception interact in the processing of magnitudes such as duration and numerosity. Sustained physical exercise (such as running or cycling) increases the apparent duration of visual stimuli presented dur...

  • Article
  • Open Access
16 Citations
1,674 Views
8 Pages

Automatic Tumor Segmentation With a Convolutional Neural Network in Multiparametric MRI: Influence of Distortion Correction

  • Lars Bielak,
  • Nicole Wiedenmann,
  • Nils Henrik Nicolay,
  • Thomas Lottner,
  • Johannes Fischer,
  • Hatice Bunea,
  • Anca-Ligia Grosu and
  • Michael Bock

1 September 2019

Precise tumor segmentation is a crucial task in radiation therapy planning. Convolutional neural networks (CNNs) are among the highest scoring automatic approaches for tumor segmentation. We investigate the difference in segmentation performance of g...

  • Article
  • Open Access
4 Citations
3,456 Views
13 Pages

Analysis of the Real Energy Consumption of Energy Saving Lamps

  • Manuel Ángel Graña-López,
  • Almudena Filgueira-Vizoso,
  • Laura Castro-Santos and
  • Ana Isabel García-Diez

26 November 2020

Light emitting diode (LED) and compact fluorescent light (CFL) lamps are widely used because they are associated with low energy consumption and a reduced environmental impact. In the present paper, a study of the real consumption of these devices ha...

  • Article
  • Open Access
6 Citations
4,462 Views
13 Pages

Cation Disorder and Local Structural Distortions in AgxBi1–xS2 Nanoparticles

  • Jagadesh Kopula Kesavan,
  • Francesco d’Acapito,
  • Paolo Scardi,
  • Alexandros Stavrinadis,
  • Mehmet Zafer Akgul,
  • Ignasi Burgués-Ceballos,
  • Gerasimos Konstantatos and
  • Federico Boscherini

12 February 2020

By combining X-ray absorption fine structure and X-ray diffraction measurements with density functional and molecular dynamics simulations, we study the structure of a set of AgxBi1−xS2 nanoparticles, a materials system of considerable current...

  • Article
  • Open Access
18 Citations
3,568 Views
21 Pages

Identification and Suppression of Magnetotelluric Noise via a Deep Residual Network

  • Liang Zhang,
  • Zhengyong Ren,
  • Xiao Xiao,
  • Jintian Tang and
  • Guang Li

16 June 2022

The magnetotelluric (MT) method is widely applied in petroleum, mining, and deep Earth structure exploration but suffers from cultural noise. This noise will distort apparent resistivity and phase, leading to false geological interpretation. Therefor...

  • Article
  • Open Access
16 Citations
2,606 Views
17 Pages

29 October 2020

Electroosmotic flow (EOF) is fluid flow induced by an applied electric field, which has been widely employed in various micro-/nanofluidic applications. Past investigations have revealed that the presence of nanostructures in microchannel reduces EOF...

  • Review
  • Open Access
213 Views
14 Pages

16 January 2026

Short-range internal timing supports coordinated movement, attention, and physiological regulation, yet distortions of time experience are frequently reported across clinical and high-arousal states. Patients with anxiety or acute stress often descri...

  • Article
  • Open Access
1 Citations
3,566 Views
13 Pages

Phase Transitions in Natural Vanadinite at High Pressures

  • Yingxin Liu,
  • Liyun Dai,
  • Xiaojing Lai,
  • Feng Zhu,
  • Dongzhou Zhang,
  • Yi Hu,
  • Sergey Tkachev and
  • Bin Chen

31 October 2021

The structural stability of vanadinite, Pb5[VO4]3Cl, is reported by high-pressure experiments using synchrotron radiation X-ray diffraction (XRD) and Raman spectroscopy. XRD experiments were performed up to 44.6 GPa and 700 K using an externally-heat...

  • Article
  • Open Access
2,111 Views
19 Pages

29 November 2021

Periodic calibrations of Energy Measurement Systems (EMS) installed in locomotives must be carried out to demonstrate the required accuracy established in the EN 50463-2 standard according to European Parliament and Council Directive 2008/57/EC on th...

  • Article
  • Open Access
8 Citations
2,098 Views
30 Pages

30 September 2024

In this research, we investigate the power quality of the grid where an Electric Arc Furnace (EAF) with a very high load operates. An Electric Arc Furnace (EAF) is a highly nonlinear load that uses very high and variable currents, causing major power...

  • Article
  • Open Access
1,091 Views
23 Pages

17 July 2025

Past archaeological practices have resulted in a distorted history of Native American cultures based upon western-biased research. This has been especially apparent in the rock art of the Klamath Basin in southern Oregon and northern California. In r...

  • Article
  • Open Access
66 Citations
13,636 Views
23 Pages

Harmonic Analysis of Grid-Connected Solar PV Systems with Nonlinear Household Loads in Low-Voltage Distribution Networks

  • Syed Muhammad Ahsan,
  • Hassan Abbas Khan,
  • Akhtar Hussain,
  • Sarmad Tariq and
  • Nauman Ahmad Zaffar

26 March 2021

Grid-connected rooftop and ground-mounted solar photovoltaics (PV) systems have gained attraction globally in recent years due to (a) reduced PV module prices, (b) maturing inverter technology, and (c) incentives through feed-in tariff (FiT) or net m...

  • Review
  • Open Access
4 Citations
3,076 Views
11 Pages

Over the last two decades, the functional role of the bilateral anterior temporal lobes (bATLs) has been receiving more attention. They have been associated with semantics and social concept processing, and are regarded as a core region for depressio...

  • Article
  • Open Access
887 Views
13 Pages

The static shift effect is a distortion in electromagnetic data that severely impacts exploration results. Traditional static effect correction methods are often ineffective, prone to overcorrection or undercorrection, and make it difficult to accura...

  • Article
  • Open Access
1 Citations
2,355 Views
14 Pages

Using a single photon avalanche diode (SPAD) as a receiver in an optical wireless communications (OWC) system can effectively expand the transmission distance. However, the performance of the SPAD receiver is usually affected with the bit error rate...

  • Communication
  • Open Access
1 Citations
2,568 Views
11 Pages

Different charge treatment approaches are examined for cyclotide-induced plasma membrane disruption by lipid extraction studied with dissipative particle dynamics. A pure Coulomb approach with truncated forces tuned to avoid individual strong ion pai...

  • Article
  • Open Access
1,277 Views
17 Pages

10 May 2025

The Valley of Tammaro River lies between the regions of Molise and Campania in central southern Italy. The area has been inhabited since ancient times due to its fertile soil and plentiful water resources. The interest in this region is enhanced by t...

  • Article
  • Open Access
13 Citations
1,702 Views
10 Pages

Diffusion-Weighted Echo Planar Imaging Using Multiplexed Sensitivity Encoding and Reverse Polarity Gradient in Head Andneck Cancer: An Initial Study

  • Amaresha Shridhar Konar,
  • Maggie Fung,
  • Ramesh Paudyal,
  • Jung Hun Oh,
  • Yousef Mazaheri,
  • Vaios Hatzoglou and
  • Amita Shukla-Dave

1 June 2020

We aimed to compare the geometric distortion (GD) correction performance and apparent diffusion coefficient (ADC) measurements of single-shot diffusion-weighted echo-planar imaging (SS-DWEPI), multiplexed sensitivity encoding (MUSE)-DWEPI, and MUSE-D...

  • Article
  • Open Access
8 Citations
3,597 Views
14 Pages

17 November 2022

Modern distribution grids may suffer problems of voltage distortion, especially along radial low-voltage feeders with a high penetration of intermittent, unbalanced and distorted loads and generation sources. It is a challenge to develop an effective...

  • Article
  • Open Access
1 Citations
2,326 Views
14 Pages

Synthesis, Supramolecular Structural Investigations of Co(II) and Cu(II) Azido Complexes with Pyridine-Type Ligands

  • Mezna Saleh Altowyan,
  • Jörg H. Albering,
  • Assem Barakat,
  • Saied M. Soliman and
  • Morsy A. M. Abu-Youssef

17 February 2023

Two new Co(II) and Cu(II) azido complexes with 4-picoline (4-Pic) and pyridine-2-carboxaldoxime (HAld) were synthesized by self-assembly of the organic ligand and the M(II) nitrate in the presence of azide as a co-ligand. Their structures were determ...

  • Article
  • Open Access
4 Citations
2,599 Views
29 Pages

2 December 2021

The matrix converter-based IPMSM drive has 360 Hz virtual DC-bus voltage variations which produce severe stator harmonic currents. To solve this problem, a speed-loop classical periodic controller and two current-loop periodic controllers, including...

  • Article
  • Open Access
2,276 Views
14 Pages

Robust and Precise Matching Algorithm Combining Absent Color Indexing and Correlation Filter

  • Ying Tian,
  • Shun’ichi Kaneko,
  • So Sasatani,
  • Masaya Itoh and
  • Ming Fang

18 October 2021

This paper presents a novel method that absorbs the strong discriminative ability from absent color indexing (ABC) to enhance sensitivity and combines it with a correlation filter (CF) for obtaining a higher precision; this method is named ABC-CF. Fi...

  • Article
  • Open Access
19 Citations
4,577 Views
14 Pages

The advent of modern geodetic satellite techniques (GNSS, including GPS) permitted to observe dynamic deflections of bridges, initially of long flexible ones, and more recently of short, essentially stiff bridges with modal frequencies > 1 Hz, and...

  • Article
  • Open Access
153 Views
18 Pages

27 January 2026

Endoscopes are widely used in medicine, making objective evaluation of imaging performance essential for device development and quality assurance. Image resolution is commonly characterized by the modulation transfer function (MTF); however, its inte...

  • Article
  • Open Access
5 Citations
2,057 Views
21 Pages

22 September 2023

The purpose of this study is to comprehensively analyze the influence of different fluences of irradiation with Xe23+ heavy ions on alterations in the structural, optical, and strength properties of AlN ceramics and to establish a connection between...

  • Article
  • Open Access
8 Citations
2,773 Views
11 Pages

27 September 2022

SrTiO3–LaCrO3 continuous solid solutions with LaCrO3 content ranging from 0.00 to 1.00 were prepared via a polymerized complex method. The light absorption ability of SrTiO3 was improved by the consecutive tuning of the bandgap upon the introdu...

  • Article
  • Open Access
591 Views
22 Pages

Correction of Refraction Effects on Unmanned Aerial Vehicle Structure-from-Motion Bathymetric Survey for Coral Reef Roughness Characterisation

  • Marion Jaud,
  • Mila Geindre,
  • Stéphane Bertin,
  • Yoan Benoit,
  • Emmanuel Cordier,
  • France Floc’h,
  • Emmanuel Augereau and
  • Kévin Martins

27 November 2025

Coral reefs play a crucial role in tropical coastal ecosystems, even though these environments are difficult to monitor due to their diversity and morphological complexity and due to their shallowness in some cases. This study used two approaches for...

  • Article
  • Open Access
10 Citations
2,739 Views
17 Pages

27 August 2021

In this work, we represent a shunt active power filter (SAPF) based on a serial three-phase flying capacitor multilevel inverter (FCMI) controlled by a Petri Nets representation (PNs). This structure is chosen for its significant performances. In fac...

  • Commentary
  • Open Access
203 Views
3 Pages

Introduction: Since the first appearance of the article by Haas (1975 [reprinted in IJOM:3(4), 1977]), the present writer has been filled with an abiding desire to make an appropriate response. It became quickly apparent that this is no easy task. Si...

  • Commentary
  • Open Access
223 Views
1 Page

Introduction: Since the first appearance of the article by Haas (1975 [reprinted in IJOM:3(4),1977]), the present writer has been filled with an abiding desire to make an appropriate response. It became quickly apparent that this is no easy task. Sin...

  • Article
  • Open Access
1 Citations
6,406 Views
11 Pages

Flexible Yttrium Coordination Geometry Inhibits “Bare-Metal” Guest Interactions in the Metal-Organic Framework Y(btc)

  • Josie E. Auckett,
  • Stephen H. Ogilvie,
  • Samuel G. Duyker,
  • Peter D. Southon,
  • Cameron J. Kepert and
  • Vanessa K. Peterson

18 October 2016

Y(btc) (btc = 1,3,5-benzenetricarboxylate) is a metal-organic framework that exhibits significant adsorption of industrially-relevant gases such as H2, CH4, and O2. Previous studies have noted a surprising lack of close interactions between the adsor...

  • Article
  • Open Access
1 Citations
1,201 Views
25 Pages

20 December 2025

Accurate estimation of the open-circuit voltage (OCV) as a function of state of charge (SOC) is critical for reliable battery-management system (BMS) design in lithium-ion battery applications. However, at low temperatures, polarization effects disto...

  • Article
  • Open Access
8 Citations
2,969 Views
20 Pages

Generalized Structures for Switched-Capacitor Multilevel Inverter Topology for Energy Storage System Application

  • Mu Anas,
  • Adil Sarwar,
  • Anzar Ahmad,
  • Afroz Alam,
  • Shafiq Ahmad,
  • Mohamed Sharaf,
  • Mazen Zaindin and
  • Muhammad Firdausi

1 February 2021

The apparent advantages of Multilevel Inverter (MLI) topologies in handling medium and high power with less loss in switching and lower harmonic distortion in an output voltage waveform makes it better than the conventional inverter. However, the MLI...

  • Article
  • Open Access
8 Citations
3,322 Views
6 Pages

In this research, the fractal structure of beads of different sizes obtained by the spray-drying of aqueous dispersions of microcrystalline cellulose (MCC) was studied. These beads were formed as a result of the aggregation of rod-shaped cellulose na...

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