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Gradient index
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A damage diagnosis method for trusses based on incomplete free vibration properties utilizing ensemble learning, e.g. Extreme gradient boosting (XGBoost), is presented in this work. Owing to the lack of measurement sensors, modal features are only measured at master degrees of freedom (DOFs) of a few first models instead of all DOFs of a structural system.
12p
viohoyo
25-04-2024
3
2
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Part 2 book "Physics project lab" includes content: Sound from gas bubbles in a liquid, shape and path of air bubbles in a liquid, ink diffusion in water, refractive index gradients, light scattering by surface ripples, diffraction of light by ultrasonic waves in liquids, the circular hydraulic jump, vortex physics, plastic bottle oscillator, salt water oscillator,... and otehr contents
158p
muasambanhan02
18-12-2023
12
3
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The primary objective of this research is to develop an ML-PTF on the extreme gradient boosting (XGB) framework capable of estimating soil compression index with high precision and low effort. Furthermore, advancing the quantitative knowledge of which soil structural indicators determine soil compressibility using correlation analysis.
12p
viberkshire
09-08-2023
9
3
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Educational attainment can have a different association with obesity at different levels of economic development and different stages of the nutritional transition, and these associations may vary by period and cohort. This study aims to provide evidence on the shifting of educational gradients in overweight/obesity in Indonesia, a low middle income country.
14p
viferrari
28-11-2022
15
2
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Within its range, the Caspian green lizard, Lacerta strigata, occurs in the Elburz Mountains (northern Iran) at elevations from below sea level to approximately 2700 m a.s.l. To determine the environmental factors affecting the distribution of this lizard, we used an ensemble approach to model the distribution of the Caspian green lizard (Lacerta strigata) in Iran using four algorithms (generalized boosted model, maximum entropy, generalized linear model, random forest).
8p
dolomite36
30-12-2021
8
0
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An optical system to transform the laser Gaussian beam into the Hollow-Gaussian one is proposed and designed. Based on the principles of ray optics, the expressions describing the laser intensity distribution behind optical system and optical transverse gradient force acting on the both low- (refractive index ratio, m
7p
viengland2711
23-07-2019
9
0
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Objectives: To evaluate and compare dose distribution between IMRT and VMAT plan in radiotherapy for head and neck cancer using TrueBeam STx accelerator. Subjects and methods: CT imaging of head and neck cancer’s patients treated with VMAT on the TrueBeam STx accelerator was used to replan using IMRT technique in TPS Eclipse v13.6.
8p
vixyliton2711
17-04-2019
44
0
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Understanding the mechanisms of how environmental factors limit species distribution along environmental gradients is a central question in ecology. This study aimed to understand species acclimation in view of photosynthetic parameters in an arid mountainous region.
17p
caplock2711
21-02-2019
17
1
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