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4701
Information criterion for approximation of unnormalized densities.
Published 2025-01-01“…This density approximation problem is ubiquitous in statistics, such as approximating a posterior density for Bayesian inference and estimating an optimal density for importance sampling. We consider a parametric approximation approach and cast it as a model selection problem to find the best model in pre-specified distribution families (e.g., select the best number of Gaussian mixture components and their parameters). …”
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4702
Controlled biopolymer roughness induced by plasma and excimer laser treatment
Published 2013-11-01“…The motivation of this work is to determine optimal conditions for rough or flat biopolymer surface which may find broad application in tissue engineering as biocompatible carrier for various types of cell lines. …”
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4703
Predictive Study on the Cutting Energy Efficiency of Dredgers Based on Specific Cutting Energy
Published 2025-03-01“…Subsequently, five machine learning algorithms, such as RF and XGBoost, are used in combination with a grid search to find the optimal hyperparameters, and Lasso is used as the meta-learner to integrate the prediction results. …”
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4704
Analysis of High-Frequency Sea-State Variability Using SWOT Nadir Measurements and Application to Altimeter Sea State Bias Modelling
Published 2024-11-01“…The results also imply that optimal time-differencing (i.e., >4 days) should be considered when building SSB model data training sets. …”
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4705
Effects of hexavalent chromium on the biology of Steinernema feltiae: evaluating sublethal endpoints for ecotoxicity testing.
Published 2025-01-01“…Reproduction, unlike the other sublethal parameters tested, appeared not to be an optimal endpoint for assessing soil Cr VI + risk contamination. …”
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4706
Frozen Meat-Containing Semi-Finished Minced Products: Biopolymer Packaging Materials
Published 2021-03-01“…The research objective was to find the optimal modes for minced-meat semi-finished products frozen in a biopolymer package. …”
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4707
Solar Photocatalytic Removal of Chemical and Bacterial Pollutants from Water Using Pt/TiO2-Coated Ceramic Tiles
Published 2012-01-01“…This catalyst was found effective for the solar photocatalytic removal of chemical and bacterial pollutants from water. Once the parameters are optimized, the Pt/TiO2/tile can find application in swimming pools, hospitals, water theme parks, and even industries for the decontamination of water.…”
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4708
Ag(I) decorated isomeric triazine complexes as efficient hydrogen storage materials - A theoretical investigation
Published 2025-04-01“…Many transition metal-based metal-organic frameworks have been explored for hydrogen (H₂) storage, but finding an optimal solution remains challenging. This study employs Density Functional Theory (DFT) with various functionals and basis sets to examine Ag(I)-decorated isomeric triazines (123, 124, and 135 N-positions) as potential H₂ storage materials. …”
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4709
HVDC technologies in electric power transmission: International practices and development pathways in Kazakhstan
Published 2025-01-01“…Particular attention is given to analysis of power losses, system stability, and control strategies for HVDC systems, based on current research. The finding enables an assessment of the feasibility of implementing HVDC in Kazakhstan’s power grid and support the identification of optimal transmission parameters to enhance system efficiency. …”
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4710
An enhanced tabu search algorithm for resource-constrained project scheduling with a flexible project structure
Published 2025-12-01“…Due to the NP-hard nature of the problem, this mathematical model can only be used to find the optimal solution to small-scale problems. …”
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4711
Levenberg–Marquardt Backpropagation for Numerical Treatment of Micropolar Flow in a Porous Channel with Mass Injection
Published 2021-01-01“…The learning process of the adjustable parameters is conducted with efficacy of the LMA-BANN model. …”
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4712
A novel approach for predicting the standardised precipitation index considering climatic factors
Published 2022-12-01“…The result revealed that data pre-processing techniques enhance the data quality by increasing the correlation coefficient between independent and dependent variables; and choosing the optimal input model scenario. Also, it was found that the PSO algorithm precisely predicts the parameters of the proposed model. …”
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4713
Directions for improving the pension indexations mechanism in the context of Russian economy’s transformation
Published 2022-11-01“…The proposed directions were classified into four groups: 1) measures of a general economic nature, indirectly affecting the level of pension provision; 2) changing the general parameters of the existing pension system in order to optimize it; 3) the development of a non-governmental pension insurance system to solve the problem of a low replacement rate for high-income groups of pension recipients and 4) a change in the existing mechanism for indexing pensions, which involves more radical changes to fundamentally increase the level of pension provision for Russian pensioners.…”
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4714
Lumen Degradation Lifetime Prediction for High-Power White LEDs Based on the Gamma Process Model
Published 2019-01-01“…An accelerated thermal degradation test was designed to gather luminous flux degradation data which was analyzed based on maximum likelihood estimation (MLE) and the method of moments (MM) to estimate the parameters for the GDD model. The MLE method has shown superiority over MM in terms of the estimation of the model parameters due to its iterative algorithm being likely to find the optimal estimation. …”
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4715
Deep Learning Shield Attitude Prediction Model Based on Grey Correlation Analysis
Published 2025-03-01“…This finding indicated that the model effectively combined the single models and that eliminating parameters with low correlation to the cutter horizontal displacement, shield tail horizontal displacement, cutter vertical displacement, and shield tail vertical displacement shield attitude parameters improved the model’s prediction accuracy. …”
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4716
REGULATORY ENVIRONMENT OF BUSINESS ACTIVITIES IN UKRAINE
Published 2017-09-01“…This includes, in particular, obtaining building permition, difficulties in closing down of business and global commerce. Ukraine even did not find itself in top hundred according to these parameters. …”
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4717
Learning Energy-Efficient Transmitter Configurations for Massive MIMO Beamforming
Published 2024-01-01“…Therefore, finding the optimal transmitter architecture requires solving a non-convex mixed integer problem in a large search space. …”
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4718
Simulation and analysis of residual stress in 17-7 PH stainless steel welded joints using laser shock peening technology
Published 2024-11-01“…The material was tested for residual stress using an X-ray stress diffractometer to verify the accuracy of the simulation results and lay the foundation for finding the optimal process parameters. The simulation results show that when the laser power density is 2.79 GW/cm2, the maximum residual compressive stress value on the surface of the sample after laser shock peening is −37.2 MPa; When the laser power density is 2.79 GW/cm2, the maximum residual compressive stress value on the surface of the sample is −94.1 MPa; When the power density reaches 5.17 GW/cm2, the maximum residual stress value on the surface of the laser shock peening sample is −144.8 MPa, and residual stress cavity is formed. …”
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4719
DIPOLE ANTENNAS WITH A SECTOR-SHAPED RADIATION PATTERN
Published 2024-12-01“…The obtained calculation results for the maximum achievable electrodynamic characteristics allow us to find optimal geometric parameters of the antenna with a sector-shaped pattern for a particular application.…”
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4720
Research on the Rapid Detection of Formaldehyde Emission From Wood-Based Panels Based on the AMSHKELM
Published 2025-01-01“…The multi-strategy improved black-winged kite algorithm then optimizes key parameters of the successive variational mode decomposition (SVMD) and hybrid kernel extreme learning machine (HKELM). …”
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