-
2381
DETERMINING THE STABILITY OF THE BOREHOLE WALLS AT DRILLING INTERVALS OF LOOSELY COUPLED ROCKS CONSIDERING ZENITH ANGLE
Published 2019-04-01“…Technological and technical factors such as vibration and rotation of the drilling string, formation of launders during the descent and ascent of the assembly, pressure pulsation during the start and stop of pumps, hydrostatic and hydrodynamic pressure of the drilling fluid, its composition and properties, have a great influence on the stress-strain state of the medium opened by the well. …”
Get full text
Article -
2382
Design and implementation of state-of-charge estimation based on back-propagation neural network for smart uninterruptible power system
Published 2019-12-01“…Then, the back-propagation neural network is trained by Levenberg–Marquardt algorithm and gradient descent method; and the state of charge of batteries in uninterruptible power system is estimated by the trained back-propagation neural network. …”
Get full text
Article -
2383
Road Roughness Level Identification Based on BiGRU Network
Published 2022-01-01“…The Adam algorithm and mini-batch gradient descent are utilized to improve the accuracy and increase the speed of the model training process. …”
Get full text
Article -
2384
A Novel Profiler Driven by Tidal Energy for Long Term Oceanographic Measurements in Offshore Areas
Published 2021-05-01“…The research results show that tidal energy can be used as a kind of energy to drive the profiler’s ascent and descent motion and to continuously measure ocean parameters without using electric energy. …”
Get full text
Article -
2385
“Do I need to read to do well?”: a post-pandemic case study of the reading habits and academic attainment of STEM and non-STEM students
Published 2023-09-01“…Thus, a convenient sample of female undergraduate students of Saudi Arabian descent was asked to report reading habits and interests. …”
Get full text
Article -
2386
A GPU IMPLEMENTATION OF THE SECOND ORDER ADJOINT STATE THEORY TO QUANTIFY THE UNCERTAINTY ON FWI
Get full text
Article -
2387
Doubly Constrained Waveform Optimization for Integrated Sensing and Communications
Published 2023-06-01“…New techniques are developed to solve the original problems, which are NP-hard and cannot be directly solved by conventional semi-definite programming (SDP) techniques. Novel gradient descent methods are developed to solve the first two problems. …”
Get full text
Article -
2388
A Scaled Dai–Yuan Projection-Based Conjugate Gradient Method for Solving Monotone Equations with Applications
Published 2022-07-01“…The proposed directions satisfy the sufficient descent condition independent of the line search strategy. …”
Get full text
Article -
2389
Artificial Neuron-Based Model for a Hybrid Real-Time System: Induction Motor Case Study
Published 2022-09-01“…In this work, we have experimentally investigated the impact of continuous updating and validation of the hyperparameters, on the performance of a cyber-physical model, with four estimators based on <i>feedforward</i> and <i>narx</i> ANNs, all with the gradient descent-based optimization technique. The main objective is to demonstrate that the optimized values of the hyperparameters can be validated by simulation with MATLAB/Simulink following a mixed approach based on interleaving the updates of their values with a classical training of the ANNs without affecting their efficiency and automaticity of the proposed method. …”
Get full text
Article -
2390
Validation of bioelectrical impedance analysis in Ethiopian adults with HIV
Published 2017-01-01“…Equations used in BIA are typically derived in healthy individuals of European descent. BIA is specific to health status and ethnicity and may therefore provide inaccurate results in populations of different ethnic origin and health status. …”
Get full text
Article -
2391
Completely positive maps for imprimitive complex reflection groups
Published 2021-10-01“…Orellana defined in 2008 a length function on imprimitive complex reflection groups that allowed them to introduce an analogue to the descent algebra of Coxeter groups. In this article, we use the length function defined by A. …”
Get full text
Article -
2392
Mountain & Alpine Medicine
Published 2020-11-01“…About 75% of all falls happened during the descent and 70% of the victims who sustained a fall-related injury showed defective vision. …”
Get full text
Article -
2393
Coupling a Neural Network-Based forward Model and a Bayesian Inversion Approach to Retrieve Wind Field from Spaceborne Polarimetric Radiometers
Published 2008-12-01“…To minimize the cost function of MAP and ML, conventional Gradient Descent method, as well as Simulated Annealing optimization technique, have been employed. …”
Get full text
Article -
2394
Blood Vessel Segmentation of Retinal Image Based on Dense-U-Net Network
Published 2021-11-01“…Thirdly, stochastic gradient descent was used to optimize the Dice loss function to improve the segmentation accuracy. …”
Get full text
Article -
2395
PARAMETRIC IDENTIFICATION OF THERMAL CONDUCTIVITY OF HIGHLY POROUS MATERIALS UNDER THE INFLUENCE OF SPACE FACTORS
Published 2022-12-01“…To do this, it is first necessary to find the components of the gradient of the target functional of the descent step, since this optimization problem is solved by the conjugate directions method, which allows achieving the required convergence in the minimum number of iterative approximations. …”
Article -
2396
Beyond Exception and Supremacy: Adwa in the Black Radical Imaginary
Published 2021-06-01“…Stories of Adwa have anchored multiple forms of exceptionalism that underpin some Ethiopians’ sense of superiority over others of African descent. This narrative mode goes hand-in-hand with certain toxic, solidarity destroying tendencies of some diasporic Ethiopians. …”
Get full text
Article -
2397
Least squares reverse time migration imaging with illumination preconditioned based on improved PRP conjugate gradients
Published 2023-08-01“…Abstract Least squares reverse time migration (LSRTM) imaging is the one of the most accurate methods for migration imaging at present, and Polak–Ribiere–Polyak conjugate gradient (PRPCG) for LSRTM has the good numerical performance but weak convergence, so we construct an optimization factor to improve the iteration direction of the gradient, which can automatically generate a sufficient descent direction. The improved PRPCG (IPRPCG) can reduce the data residual values and speed up the iteration. …”
Get full text
Article -
2398
On the mesoscale structure of the intra-Alpine precipitation distribution during a typical winter snowfall event
Published 1996-07-01“…"Virtual topography" comprised of cold air from a back-door cold front that filled the Inntal limited the descent and consequently the drying out of the air en route from the northern mountain ranges to the even higher Alpine crest. …”
Get full text
Article -
2399
Accurate genome-wide phasing from IBD data
Published 2022-11-01“…Abstract As genotype databases increase in size, so too do the number of detectable segments of identity by descent (IBD): segments of the genome where two individuals share an identical copy of one of their two parental haplotypes, due to shared ancestry. …”
Get full text
Article -
2400
Calculation of the water flow rate of Micro HPP depending on the water fall angle in ideal cases
Published 2024-01-01“…The paper describes the technology for generating electrical energy in small hydroelectric power plants, in the absence of a natural descent of water flows. It is known that the main parameter for obtaining electrical energy is the water flow, which includes the speed of the water. …”
Get full text
Article