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Edaphic and meteorological parameters as determinants of radon exhalation and its environmental implication in Peruvian agroecosystems
Published 2025-07-01“…First, the ANN model determined environmental factors affecting radon exhalation, achieving $$\hbox {R}^{2}$$ values of 0.7949 (training) and 0.7656 (validation). …”
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503
The Effect of Plate Discretization on Accuracy of the Sound Radiation Efficiency Measurements
Published 2014-09-01“…This paper deals with the problem of the effect of discretization level and certain other parameters characterizing the measurement setup on accuracy of the process of determination of the sound radiation efficiency by means of the Discrete Calculation Method (DCM) described by HASHIMOTO (2001). …”
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504
Determination of rational number of heat recovery units for the barn for 400 heads
Published 2018-06-01“…Dependences of the change in running costs on the performance efficiency of the utilizers are established. The number and type of the heat recovery units is determined. …”
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Analysis of the Efficiency of Hydrogen Production Technology at Mini-CHP Plants Using Local Fuelsby Thermochemical Method
Published 2023-08-01“…According to the results of the analysis of the mathematical model, it was determined that the specific consumption of electric energy per 1 kg of hydrogen for such a scheme will be 9.11 (kW×h)/kg, which is on average more than five times less than in the production of hydrogen by electrolysis, the rest of the required energy is replaced by thermal one, while the maximum fuel utilization factor of mini-CHP with a hydrogen production module using wood waste as fuel amounted to 83.1 %, including a thermal efficiency of 51.5 %, the efficiency of hydrogen production at the lowest calorific value is 31 %, the electrical efficiency for the supply of electricity to the grid is 0.6 %. …”
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507
EVALUATION OF PRODUCT QUALITY: INDICATORS AND METHODS
Published 2025-06-01“…The article evaluates the effectiveness and efficiency of product quality management based on market, financial, social, and other factors. …”
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508
Determining of the Maximum Throughput of Control Valve in Heat Supply Systems
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Calculation of the Friction Coefficients of Flax Stems according to their Roughness Characteristics
Published 2019-02-01“…(Conclusions) It has been established that as the humidity of flax stems increases, the molecular component of the friction coefficient increases too. It has been determined that when the moisture content of the stems is 20-45 percent, the friction coefficient values range from 0.38 to 0.98 percent.…”
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511
Investigation of the Effect of Restitution Coefficient on 3-Dimensional Rockfall Analyses
Published 2025-01-01“…This study examines the effects of terrain restitution coefficients (Rn and Rt), which can be determined using various methods in rockfall modeling analyses, on factors such as runout paths, bounce heights, kinetic energy, and lateral dispersion. …”
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512
Relationship between radon and oxygen diffusion coefficients in OPC concretes
Published 2025-08-01“…As concrete often forms the building envelope with the ground, it is interesting to investigate its performance as a barrier, i.e. its radon exhalation, which depends on the radon diffusion coefficient and thickness. Experimentally obtaining the radon diffusion coefficient in concrete is complicated, so it would be useful to be able to use an analytical method for its estimation from parameters that are easier to obtain, such as the oxygen diffusion coefficient, which can be determined experimentally with less difficulty and could even be estimated analytically. …”
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Estimatation of evapotranspiration and crop coefficient of melon cultivated in protected environment
“…ABSTRACT The objective of this work was to determine the water consumption and the crop coefficient of melon in a protected environment. …”
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514
Enhancing hydrodynamic efficiency in Autonomous Underwater Vehicles (AUVs) utilizing adjoint method and proper orthogonal decomposition.
Published 2025-01-01“…While there have been notable breakthroughs in applying the adjoint technique to optimize air and land vehicles, there is still a deficiency in optimizing AUVs using the adjoint method. The present research explores how to improve the hydrodynamic efficiency of an AUV using the gradient-based adjoint technique and Proper Orthogonal Decomposition (POD). …”
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PhyloTune: An efficient method to accelerate phylogenetic updates using a pretrained DNA language model
Published 2025-07-01Get full text
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518
DETERMINING THE VALUE OF DOUBLE BARRIER OPTION USING STANDARD MONTE CARLO, ANTITHETIC VARIATE, AND CONTROL VARIATE METHODS
Published 2023-06-01“…Compared to the other methods, control variate is the most effective and efficient in determining the value of double barrier knock-in option, based on the option value, relative error and computational time. …”
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Definition of the Complex Refractive Index of an Etalon for Measuring the Reflection Coefficient
Published 2014-06-01“…The paper describes methods for determination of the complex refractive index of opaque objects by the measurement results of the reflection coefficients at two different angles of incidence. …”
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Methodology study for determining the half-value layer using the Monte Carlo code PHITS
Published 2024-09-01“…Primarily, simulations were conducted to determine the X-ray spectra resulting from the interaction of electron beams with different energies with a tungsten anode. …”
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