The discrete element modeling of rock and soil mass usually relies on tedious parameter adjustment mechanical property testing operations to obtain appropriate parameters the element. In this paper, based linear elastic contact theory, a model samples was established software MatDEM with high-performance numerical analysis, actual properties were predicted using machine learning method, XGBoost...

An attempt was made in this study, to develop a ”Knowledge Based System” for i)computing the depth (or the third dimension) of 3D objects, ii) computing the inclinations of 2D planes with predefined reference planes and iii) computing the inclinations of a straight line with predefined reference planes. The development of the proposed “Knowledge Based System” was based on the “Principle of Colo...

two types of hydride electxodes are potential candidates to replace the cd elecsode in nilcd batteries, one is of the a type where a is a rare earth metal or mixture thereof, and b is the transition metal. the other is commonly referred to as a type. a , type alloys with partial substitution of the b element in a type hydride material (ovonic) with co, mn, al, and fe were studied (a components ...

Resilient modulus and California Bearing Ratio (CBR) in unbound granular materials are the key technical characteristics of layers in a flexible pavement design. Among the factors affecting these two parameters, the aggregate gradation is the most important. Using particle size distribution curve developed by AASHTO, together with other considerations mentioned in the related regulations have y...

An important prerequisite for the generation of realistic material behavior with Discrete Element Method (DEM) is correct determination material-specific simulation parameters. Usually, this done in a process called calibration. One main disadvantage classical calibration fact that it non-learning approach. This means knowledge about functional relationship between parameters and responses does...

This paper presents an automated procedure to generate a three-dimensional finite element model of an individual patient’s mandible with dental implants inserted. The reconstruction of the geometry as well as the modeling of the material properties for the different types of bone in the jaw is based on CT data. For this purpose various methods of image processing, geometric modeling and finite ...

Mammographically-detected breast arterial calcifications (BAC) are considered to be an incidental finding without clinical importance since they are not associated with increased risk of breast cancer. The goal of this article is to review existing evidence that the presence of BAC on mammography correlates with several (but not all) traditional cardiovascular disease (CVD) risk factors and wit...