Threshold analysis
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In low-cost permanent magnet synchronous motor (PMSM) drive systems, the rotor position is usually estimated based on the back-electromotive force. However, such estimation methods have the common drawback of having large errors in low-speed regions. In order to solve that drawback in the startup phase, the I-f startup method is studied as its compatibility with the FOC control structure. The purpose of such a method is to make the motor accelerate and overcome the low-speed threshold.
8p vialicene 02-07-2024 1 0 Download
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This study investigates the impact of the shadow economy on sustainable development in 54 countries (categorised as high and low financial development) from 2008 to 2021, using Bayesian regression. Utilizing a sophisticated Bayesian regression analysis, our study unearths a compelling negative relationship between the shadow economy and sustainable development within both of these groups of nations.
20p viohoyo 25-04-2024 3 1 Download
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The aim of this paper is finding empirical evidences for the existence of factors that influence firm performance of Vietnamese listed real estate companies. A single threshold panel regression analysis is conducted to confirm threshold effect of leverage.
12p vimarillynhewson 02-01-2024 5 2 Download
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Colposcopy is an important tool in diagnosing cervical cancer, and the International Federation of Cervical Pathology and Colposcopy (IFCPC) issued the latest version of the guidelines in 2011. This study aims to systematically assess the accuracy of colposcopy in predicting low-grade squamous intraepithelial lesions or worse (LSIL+) / high-grade squamous intraepithelial lesions or worse (HSIL+) under the 2011 IFCPC terminology.
16p vischultz 20-10-2023 1 1 Download
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The paper "Image processing-based automatic gradation of stone aggregates" aims to employ image processing methods to develop a simple tool for automatic gradation of stone aggregates. The methods of image thresholding, Gaussian filtering, median filtering, morphological closing, and contour analysis are employed. The output of the newly constructed system is the plots demonstrating particle size distribution. These plots can be used for further inspection of aggregate gradation. The system has been developed in Python and with the help of the OpenCV library.
6p nhanchienthien 25-07-2023 6 3 Download
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Part 1 of ebook "Excursions in harmonic analysis - Volume 3: The February fourier talks at the Norbert Wiener center" provide readers with content including: special topics in harmonic analysis; the algebra of elimination; Hodge-de Rham theory of K-forms on carpet type fractals; applications and algorithms in the physical sciences; biosequence time–frequency processing - pathogen detection and identification; wavelet–shearlet edge detection and thresholding methods in 3D;...
168p dieptieuung 19-07-2023 2 2 Download
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The representation of cotton color is a key element in deciding the cotton grade. The color of cotton fibre is measured with instruments as well as visual assessment. But, these two methods always represent disagreement in the measurements. The main reason for disagreement is the trash particles on the cotton surface. The threshold segregation technique is used for the segmentation of trash and cotton fibres from the image of cotton sample. It is used in this research for the trash segmentation and precise color measurement.
14p lyhuyenthu 31-01-2023 6 2 Download
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In this paper, we illustrate the use of the method in public health, investigating the effectiveness of interventions aiming to increase the uptake of accident prevention behaviours in homes with children aged 0–5.
13p viferrari 28-11-2022 13 2 Download
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In June 2019, surveillance data from the Uganda’s District Health Information System revealed an outbreak of malaria in Kole District. Analysis revealed that cases had exceeded the outbreak threshold from January 2019. The Ministry of Health deployed our team to investigate the areas and people affected, identify risk factors for disease transmission, and recommend control and prevention measures.
9p viferrari 29-10-2022 10 2 Download
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Several factors are believed to influence the development and experience of pain. Human clinical pain models are central tools, in the investigation of basic physiologic pain responses, and can be applied in patients as well as in healthy volunteers. Each clinical pain model investigates different aspects of the human pain response.
8p viisaacnewton 25-04-2022 24 1 Download
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This study investigated the threshold or sustainable level of institutional development necessary for financial openness to stimulate TFP growth by employing a Dynamic Panel Threshold Model (DPTM) for the panel of 28 selected African countries from 1996 to 2019.
10p lazzaro 30-12-2021 8 0 Download
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Patient blood management programs should be applied to the pediatric population, but little is known about the current transfusion practice of pediatric burn injury patients. This retrospective study was performed to evaluate the practice of red blood cell (RBC) transfusion in children with burn injury, their predictive factors, and adherence to the German transfusion guideline.
8p vidietmarhopp 28-12-2021 14 0 Download
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Integrated social care may help to mitigate social risk factors in order to achieve more equitable health outcomes. In cancer centers certified according to the criteria set out by the German Cancer Society, every patient must be given low-threshold access to qualified social workers at the center for in-house social service counseling (SSC).
9p vimahuateng 26-11-2021 10 2 Download
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The paper proposed a novel threshold based algorithm of oil spill detection in the Synthetic Aperture Radar images. This threshold is a global one determined according to statistical analysis of pixel intensities of the images and their sizes. The simulation results of the proposed method on Python software were compared with other methods, and proved that the proposed method significantly improved accuracy.
8p nguaconbaynhay12 13-06-2021 12 1 Download
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The fractal dimension characterizing the cumulative size distribution of low attenuation area (LAA) clusters, identified with a fixed threshold such as − 950 Hounsfield Units (HU), on computed tomography (CT) sensitively detects parenchymal destruction in chronic obstructive pulmonary disease (COPD) even when the percent LAA (LAA%), a standard emphysema index, is unchanged.
10p vimontana2711 05-04-2021 8 1 Download
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The technology import is gradually lost, even becomes negative effect. The policy suggestion is: firstly, the Beijing-Tianjin-Hebei region needs to increase introduction of high quality technology, in order to raise the level of technological innovation. Secondly, the Beijing-Tianjin-Hebei region needs to adhere to the development strategy of indigenous innovation, in order to promote the upgrading of the industrial structure.
17p nat_qb73 21-02-2021 12 1 Download
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In a prior randomized trial, we demonstrated that participants receiving spinal manipulative therapy at a pain-sensitive segment instead of a stiff segment experienced increased mechanical pressure pain thresholds. We hypothesized that the targeted segment mediated this increase through a segment-dependent neurophysiological reflective pathway.
12p vivermont2711 28-01-2021 8 2 Download
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An Giang is one of the provinces in the Mekong delta that is greatly affected by flood events, which brings damage and devastation to life and property. This study practices the application of Sentinel-1A images to monitor the distribution of flood depths in the An Giang province in 2019 as well as applies regression correlation and thresholding to scattering value analysis. The research results indicated the exponential regression model on the VV polarization images had correlation coefficients (r) in August, September, and October ranging from 0.8398 to 0.
7p nguaconbaynhay10 29-01-2021 8 3 Download
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The 2013 American Academy of Orthopaedic Surgeons (AAOS) guidelines made strong recommendations against intraarticular hyaluronic acid (IAHA) for patients with knee osteoarthritis (OA), as evidence supporting improvements in pain did not meet the minimal clinically important improvement (MCII) threshold.
10p vimariana2711 22-12-2020 10 0 Download
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A challenge in gene expression studies is the reliable identification of differentially expressed genes. In many high-throughput studies, genes are accepted as differentially expressed only if they satisfy simultaneously a p value criterion and a fold change criterion.
16p vikentucky2711 26-11-2020 22 1 Download