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1181
Comparison of the Efficiency of Overcoming the Crisis of Russian and Foreign Oil and Gas Companies
Published 2023-08-01“…The paper analyzes the main empirical indicators that reflect the degree of efficiency, justifies the choice of the profitability indicator of own assets as the main indicator for research in the oil and gas industry, analyzes approaches to assessing the contribution of various factors to the final efficiency. Methods of classification, decomposition, statistical, comparative and factor analysis were used. …”
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1182
Research on Fault Diagnosis of UAV Rotor Motor Bearings Based on WPT-CEEMD-CNN-LSTM
Published 2025-03-01“…The experimental results demonstrate that the fault diagnosis accuracy of this method reaches 96.67%, which is significantly higher than that of the traditional CNN (85%), LSTM (51.33%), and the CEEMD-CNN-LSTM model with single-signal noise reduction (77.33%). …”
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1183
Spanish Economy on the Trajectory of the Modernisation Process
Published 2023-06-01Get full text
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1184
Frequency–Spatial–Temporal Domain Fusion Network for Remote Sensing Image Change Captioning
Published 2025-04-01“…While demonstrating significant potential for urban planning, agricultural surveillance, and disaster management, current RSICC methods exhibit two fundamental limitations: (1) vulnerability to pseudo-changes induced by illumination fluctuations and seasonal transitions and (2) an overemphasis on spatial variations with insufficient modeling of temporal dependencies in multi-temporal contexts. …”
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1185
Reaction Kinetics and Mass Transfer of Photocatalytic Fenton for Phenol Degradation in a Petroleum Refinery Wastewater
Published 2025-03-01“…The efficacy of the iron-doped zeolite photocatalytic reactor was determined by analyzing the kinetics of phenol decomposition in the aqueous solution. The kinetic model was derived using a quasi-steady state approach to obtain essential kinetics parameters. …”
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1186
A comparative analysis for crack identification in structural health monitoring: a focus on experimental crack length prediction with YUKI and POD-RBF
Published 2024-03-01“…Structural Health Monitoring (SHM) has emerged as a pivotal tool for assessing structural health, with an emphasis on damage detection, localisation, and quantification, particularly through vibration-based methods that exploit variations in modal properties as precursors to structural damage. …”
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1187
Impulse Response Mechanism of Agricultural Drought to Local Climate Factor at Different Time Scales in Karst Region
Published 2024-10-01“…[Objective] In order to quantitatively analyze the response mechanism of agricultural drought to single factor in karst areas. [Methods] In this study, Delaunay triangulation and K-means clustering were employed to calculate the area and classify the annual rainfall data of 83 stations in Guizhou Province, resulting in the division of Guizhou into 5 regions. …”
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1188
Laguerre-Based Frequency-Limited Balanced Truncation of Discrete-Time Systems
Published 2025-01-01“…This paper introduces a novel model order reduction (MOR) method for linear discrete-time systems, focusing on frequency-limited balanced truncation (BT) techniques. …”
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1189
Reflection of P1-wave incident obliquely at the free surface of a fluid-saturated half-space: a comprehensive study via the model of soil mechanics
Published 2025-04-01“…Based on the soil mechanics model of a two-phase medium, the reflection problem of an obliquely incident plane P1-wave at the free surface is systematically explored, which aims to reveal the physical mechanism of wave propagation in saturated semi-infinite space.MethodsThe dispersion characteristic equations of body waves are obtained by using the Helmholtz decomposition method. …”
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1190
Investigation of CO2 hydrate growth kinetics in gas-dominated systems
Published 2025-07-01“…Thus, it is essential to enhance the understanding of CO2 hydrate growth characteristics in gas-dominated systems within pipelines, elucidate the growth kinetics of these hydrates, and establish a theoretical framework for predicting and preventing hydrate formation in CO2 transmission pipelines. MethodsA high-pressure, low-temperature multiphase flow loop test device was employed to conduct 16 groups of tests on CO2 hydrate growth and decomposition under conditions of 4.00–4.50 MPa pressure, 1.0–3.0 ℃ ambient temperature, 2.20 m/s flow rate, and 4% water content. …”
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1191
Can historical economic growth patterns be traced in South and Southeast Asian countries as the classical theory suggests?
Published 2025-07-01“…This paper identifies some common development patterns in 6 Asian lower-income developing countries (LIDCs) to confirm Flying Geese model for South and Southeast Asia, using three periods of the input‒output table with a novel decomposition technique derived from a conventional method. …”
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1192
OPTIMIZATION OF TRANSPORTATION ROUTES IN A CLOSED LOGISTICS SYSTEM
Published 2019-12-01“…The goal of the work is the creation of mathematical models and methods for solving problems of optimizing transportation routes in closed-loop logistics systems, taking into account many topological and functional limitations. …”
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1193
Cointegration Analysis of Trade and Economıc Cooperatıon Between Russıa and Azerbaijan Under Sanction Conditions
Published 2025-05-01“…The purpose of the study is to analyze the development dynamics of trade and economic relations between the Republic of Azerbaijan and the Russian Federation under sanction conditions using econometric methods. This involves constructing an econometric model of the relationship between key macroeconomic indicators such as the GDP per capita of both countries, the number of economically active populations, and the trade turnover between the two countries - within the framework of an empirical study covering the years 1992 to 2023.Materials and methods. …”
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1194
Bayesian Inference-Based Gaussian Mixture Models With Optimal Components Estimation Towards Large-Scale Synthetic Data Generation for <italic>In Silico</italic> Clinical Trials
Published 2022-01-01“…<italic>Goal</italic>: To develop a computationally efficient and unbiased synthetic data generator for large-scale <italic>in silico</italic> clinical trials (CTs). <italic>Methods:</italic> We propose the BGMM-OCE, an extension of the conventional BGMM (Bayesian Gaussian Mixture Models) algorithm to provide unbiased estimations regarding the optimal number of Gaussian components and yield high-quality, large-scale synthetic data at reduced computational complexity. …”
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1195
Temporal and spatial trends in gastric cancer burden in the USA from 1990 to 2021: findings from the global burden of disease study 2021
Published 2024-12-01“…By calculating percentage changes and average annual percentage changes (AAPC), along with conducting age-period-cohort analysis, we assessed the trends in the burden of GC. Decomposition analysis was then performed, followed by the application of an autoregressive integrated moving average (ARIMA) model to forecast changes in ASRs through 2036.ResultsFrom 1990 to 2021, the number of incidence and prevalence of GC in the USA increased, but age-standardized incidence rates (ASIR) trended downward (AAPC = -0.73, 95% confidence interval [CI]: -0.77 to -0.68) and age-standardized prevalence rates (ASPR) (AAPC = -0.99, 95% CI: -1.08 to -0.9) showed a decreasing trend. …”
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1196
Modeling New Nature of Extraction and State Identification of Vibration Shock Signals From Hydroelectric Generating Units Using LCGSA Optimized RBF Combined With CEEMDAN Sample Ent...
Published 2024-01-01“…Experimental results demonstrate that this method achieves a 100% accuracy rate, outperforming other comparative models. …”
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1197
Feasibility of energy dispersive X-ray fluorescence for quantitative prediction of elemental profile in untreated bovine colostrum
Published 2025-08-01“…Current gold-standard methods to determine elemental composition of BC are inductively coupled plasma optical-emission spectrometry or inductively coupled plasma MS. …”
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1198
Usage of the digital economy information infrastructure to improve the quality of statistical data
Published 2018-09-01Get full text
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1199
Design and screening of novel 1,2,4-Triazole-3-thione derivatives as DCN1 inhibitors for anticardiac fibrosis based on 3D-QSAR modeling and molecular dynamics
Published 2025-06-01“…The aim of this study is to design and evaluate novel DCN1 inhibitors using a combination of three-dimensional quantitative structure-activity relationship (3D-QSAR) modeling, molecular docking, and molecular dynamics simulations.MethodsA dataset of 47 derivatives was employed to construct Comparative Molecular Field Analysis (COMSIA) model, incorporating steric, electrostatic, hydrophobic, hydrogen bond donor, and acceptor fields to accurately predict compound activity. …”
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1200
Based on regional heterogeneity: measurement of hospital service efficiency and analysis of spatial effects
Published 2025-04-01“…If regional heterogeneity is ignored in measuring the efficiency of health services, erroneous judgments may result.MethodsThis study utilized the Meta-Frontier Slack-Based Measure (SBM) model to evaluate the efficiency of hospital services across various Chinese provinces from 2009 to 2022. …”
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