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1401
PCA-FSA-MLR Model and Its Application in Runoff Forecast
Published 2021-01-01“…To improve the accuracy of runoff forecast,and establish a runoff forecast model combining principal component analysis (PCA),future search algorithm (FSA),and multiple linear regression (MLR),this paper reduces the dimensionality of the sample data by PCA,selects 8 standard test functions and simulates and verifies FSA under different dimensional conditions,optimizes MLR constant terms and partial regression coefficients by FSA,proposes a PCA-FSA-MLR runoff forecast model,constructs PCA-LS-MLR,PCA-FSA-SVM,and PCA-SVM models with dimensionality reduction processing by PCA and FSA-MLR,LS-MLR,FSA-SVM,and SVM without dimensionality reduction processing as a comparison model,and verifies each model through forecasting the annual runoff and monthly runoff in December of Longtan station in Yunnan Province.The results show that:①FSA has better optimization accuracy and global extremum search ability under different dimensional conditions;②The average absolute relative error of the annual runoff and monthly runoff in December of Longtan station through PCA-FSA-MLR model are 1.63% and 3.91% respectively,and its forecast accuracy is better than the other 7 models,with higher forecast accuracy and stronger generalization ability;③For the same model,the forecast accuracy after dimensionality reduction processing by PCA is better than that without dimensionality reduction processing,so the data dimensionality reduction by PCA is helpful to improve the forecast accuracy of models.…”
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1402
Impact of the aging population on health system efficiency in combating COVID-19 of Indian states
Published 2025-08-01“…Healthcare resources and personnel greatly influence the recovery of patients with coronavirus. The calculated coefficients of the inefficiency model show that a state with a larger share of older adult residents is less efficient in managing the coronavirus. …”
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1403
Open Innovation the Impact of Social Capital on Tourism Growth Through the Mediating Role of Open Innovation (Case study: The municipality of Khomam County)
Published 2025-03-01“…An organization has the ability to extract and exploit its human capital reserves (Abbas et al, 2022). …”
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1404
Influence of Body Composition and Muscle Power Performance on Multiple Frequency Speed of Kick Test in Taekwondo Athletes
Published 2024-11-01“…The Multiple Frequency Speed of Kick Test (FSKT<sub>mult</sub>) is used to investigate which characteristics are necessary for, contribute to, or limit the ability to repeat high-intensity intermittent efforts in taekwondo. …”
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1405
Investigating the relationship between human capital and innovation with the mediating role of knowledge sharing and social media networking in iranian creative companies
Published 2024-12-01“…Human capital's impact on innovation, through the mediating role of knowledge sharing, showed a path coefficient of 0.169. Similarly, social media networking as a mediator reflected a path coefficient of 0.180.According to the results, Human capital had both a direct and indirect effect (through the mediating variables of knowledge sharing and social media networking) on innovation. …”
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1406
A comprehensive machine learning-based models for predicting mixture toxicity of azole fungicides toward algae (Auxenochlorella pyrenoidosa)
Published 2024-12-01“…Additionally, it showed strong predictive abilities when tested with external data, achieving an external R2 value of 0.945 and a Concordance Correlation Coefficient of 0.967. …”
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1407
Performance and mechanism of waste engine oil in the regeneration of aged asphalt from different perspectives.
Published 2025-01-01“…Molecular simulations revealed that the diffusion ability of light components in aged asphalt was weakened, while the Ar and S diffusion coefficients increased by 861.4% and 108%, respectively, indicating that the diffusion ability of these components was notably improved. …”
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1408
Identifying the Dimensions and Components of Virtual Arabic Language Education in Iraq
Published 2025-02-01“…The research collection tool is semi-structured interviews with experts and scholars, whose validity was confirmed by the triangulation method and its reliability was calculated by the agreement coefficient between the two coding methods as 0.81. …”
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1409
Research on Differential Brain Networks before and after WM Training under Different Frequency Band Oscillations
Published 2021-01-01“…The results showed that after WM training, the subjects’ WM networks had higher clustering coefficients and shorter optimal path lengths than before training during the retention period. …”
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1410
Dual Effects of Hypoxia-Inducible Factors-1 Alpha in Bleomycin-Induced Pulmonary Fibrosis Treated by Human Umbilical Cord Mesenchymal Stem Cells
Published 2021-01-01“…We calculated the survival time of mice, the lung coefficients, contents of hydroxyproline, and pathological scores. …”
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1411
Convolutional Neural Networks to Facilitate the Continuous Recognition of Arabic Speech with Independent Speakers
Published 2024-01-01“…Automatic speech recognition (ASR) is a field of research that focuses on the ability of computers to process and interpret speech feedback from humans and to provide the highest degree of accuracy in recognition. …”
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1412
APPLICABILITY INVESTIGATION OF HYPERELASTIC CONSTITUTIVE MODELS FOR VIBRATION ISOLATION RUBBER MATERIAL
Published 2023-12-01“…Three error evaluation indexes and a fitting goodness coefficient R were proposed to evaluate the fitting accuracy of each constitutive model. …”
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1413
The effect of the Super Set muscle endurance exercises in some physical abilitiesand the achievement of 800 meters advanced
Published 2018-09-01“…Some statistical treatments were used for this purpose (the arithmetic mean) , The mean deviation, the torsion coefficient, the median, and the T test). The results of the study showed that there were significant differences between some variables such as bearing speed, carrying speed, strength and achievement level in the sample of experimental group members. …”
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1414
Chaotic sequences based watermarking wireless physical layer security authentication algorithm
Published 2025-07-01“…Relying on specific cryptographic algorithms alone in the tradition was difficult to cope with password cracking abilities of high-intensity and high-computility. Meanwhile, a secure mechanism for covert communication was urgently needed. …”
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1415
Study of The Relationship Between Students' Belief and Attitude Toward Physics and GPA
Published 2022-10-01“…Meanwhile, it is known that success in studying physics is not only influenced by cognitive abilities but also related to other things including students' beliefs and attitudes toward physics. …”
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1416
Guiding Principles for Geochemical/Thermodynamic Model Development and Validation in Nuclear Waste Disposal: A Close Examination of Recent Thermodynamic Models for H<sup>+</sup>—Nd...
Published 2025-03-01“…All three models are checked for their ability to predict pH conditions in Nd(NO<sub>3</sub>)<sub>3</sub> electrolyte solutions. …”
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1417
Automatic delineation of cervical cancer target volumes in small samples based on multi-decoder and semi-supervised learning and clinical application
Published 2024-11-01“…The dice similarity coefficient (DSC), 95% Hausdorff distance (HD95) and average surface distance (ASD) were used to evaluate the segmentation performance. …”
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1418
Natural Resource Abundance, Financial Development and Economic Growth (An Iranian Experience)
Published 2024-09-01“…The negative and significant coefficient of the interaction variable between financial development and natural resource abundance suggests a negative effect of oil revenues on the relationship between financial development and productivity in Iran. …”
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1419
脑血管病学科带头人评价指标体系构建研究(Research on the Construction of an Evaluation Index System for Academic Leaders in Cerebrovascular Disease)
Published 2025-07-01“…The Kendall’s concordance coefficients for the first, second, and third-level indicators were 0.482 (P<0.001), 0.372 (P<0.001), and 0.498 (P<0.001), respectively. …”
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1420
EfficientNetB0-Based End-to-End Diagnostic System for Diabetic Retinopathy Grading and Macular Edema Detection
Published 2025-04-01“…Model performance was evaluated using multiple classification metrics, including accuracy, AUC, precision, recall, F1-score, and Cohen’s kappa coefficient.Results: In the first stage, the model achieved an accuracy of 0.7036 and an AUC of 0.9062 on the test set, demonstrating high accuracy and discriminative ability. …”
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