Study on pollutant model construction and three-dimensional spatial interpolation in soil environmental survey

This paper deals with the issue of model construction of the self-regeneration and self-replication processes using movable cellular automata (MCAs). The rules of cellular automaton (CA) interactions are found according to the concept of equilibrium neighborhood. The method is implemented by establishing these rules between different types of cellular automata (CAs). Several models for two- and three-dimensional cases are described, which depict both stable and unstable structures. As a result, computer models imitating such natural phenomena as self-replication and self-regeneration are obtained and graphically presented.

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Summary on Several Key Techniques in 3D Geological Modeling

The Scientific World JOURNAL ◽

10.1155/2014/723832 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 5

Author(s):

Gang Mei

Keyword(s):

Mesh Generation ◽

Spatial Interpolation ◽

Three Dimensional ◽

Geological Modeling ◽

3D Geological Modeling ◽

Surface Intersection ◽

Key Techniques

Several key techniques in 3D geological modeling including planar mesh generation, spatial interpolation, and surface intersection are summarized in this paper. Note that these techniques are generic and widely used in various applications but play a key role in 3D geological modeling. There are two essential procedures in 3D geological modeling: the first is the simulation of geological interfaces using geometric surfaces and the second is the building of geological objects by means of various geometric computations such as the intersection of surfaces. Discrete geometric surfaces that represent geological interfaces can be generated by creating planar meshes first and then spatially interpolating; those surfaces intersect and then form volumes that represent three-dimensional geological objects such as rock bodies. In this paper, the most commonly used algorithms of the key techniques in 3D geological modeling are summarized.

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Research on Automatic Construction Method of Three-Dimensional Complex Fault Model

Minerals ◽

10.3390/min11080893 ◽

2021 ◽

Vol 11 (8) ◽

pp. 893

Author(s):

Chi Zhang ◽

Xiaolin Hou ◽

Mao Pan ◽

Zhaoliang Li

Keyword(s):

Three Dimensional ◽

Geological Structure ◽

Fault Model ◽

Construction Method ◽

Model Construction ◽

Automatic Construction ◽

Complex Fault ◽

Resource Exploration ◽

Fault Structures ◽

Manual Interaction

Three-dimensional complex fault modeling is an important research topic in three-dimensional geological structure modeling. The automatic construction of complex fault models has research significance and application value for basic geological theories, as well as engineering fields such as geological engineering, resource exploration, and digital mines. Complex fault structures, especially complex fault networks with multilevel branches, still require a large amount of manual participation in the characterization of fault transfer relationships. This paper proposes an automatic construction method for a three-dimensional complex fault model, including the generation and optimization of fault surfaces, automatic determination of the contact relationship between fault surfaces, and recording of the model. This method realizes the automatic construction of a three-dimensional complex fault model, reduces the manual interaction in model construction, improves the automation of fault model construction, and saves manual modeling time.

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A CAD-Based Blade Geometry Model for Turbomachinery Aero Design Systems

Volume 6: Turbo Expo 2003, Parts A and B ◽

10.1115/gt2003-38305 ◽

2003 ◽

Cited By ~ 1

Author(s):

Ali Merchant ◽

Robert Haimes

Keyword(s):

Three Dimensional ◽

Model Construction ◽

Design System ◽

Solid Model ◽

Design Environment ◽

Seamless Integration ◽

Geometry Model ◽

Design Systems ◽

Blade Model ◽

Blade Geometry

A CAD-centric approach for constructing and managing the blade geometry in turbomachinery aero design systems is presented in this paper. Central to the approach are a flexible CAD-based parametric blade model definition and a set of CAD-neutral interfaces which enable construction and manipulation of the blade solid model directly inside the CAD system’s geometry kernel. A bottleneck of transferring geometry data passively via a file-based method is thus eliminated, and a seamless integration between the CAD system, aero design system, and the larger design environment can be achieved. A single consistent CAD-based blade model is available at all stages of the aero design process, forming the basis for coupling the aero design system to the larger multi-disciplinary design environment. The blade model construction is fully parameterized so that geometry updates can be accurately controlled via parameter changes, and geometric sensitivities of the model can be easily calculated for multidisciplinary interaction and design optimization. A clear separation of the parameters that control the three-dimensional shape of the blade (such as lean and sweep) from the parameters that control the elemental profile shape allows any blade profile family or shape definition to be utilized. The blade model definition, construction interface, and implementation approach are described. Applications illustrating solid model construction, parametric modification and sensitivity calculation, which are key requirements for automated aerodynamic shape design, are presented.

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Three‐dimensional spatial interpolation of 2 m temperature over Norway

Quarterly Journal of the Royal Meteorological Society ◽

10.1002/qj.3208 ◽

2018 ◽

Vol 144 (711) ◽

pp. 344-364 ◽

Cited By ~ 27

Author(s):

C. Lussana ◽

O. E. Tveito ◽

F. Uboldi

Keyword(s):

Spatial Interpolation ◽

Three Dimensional

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Stress-strain state of a composite near rectangular inclusion

MATEC Web of Conferences ◽

10.1051/matecconf/201824300021 ◽

2018 ◽

Vol 243 ◽

pp. 00021

Author(s):

Pavel Pisarev ◽

Aleksandr Anoshkin ◽

Vladislav Ashihmin

Keyword(s):

Numerical Simulations ◽

Numerical Experiments ◽

Strain State ◽

Maximum Stress ◽

Three Dimensional ◽

Thermoplastic Composite ◽

Model Construction ◽

Stress Strain ◽

Stress Strain State ◽

Rectangular Inclusion

In this research we developed a technique for calculating the stress-strain state of a model construction from a thermoplastic composite material with an embedded piezoactuator. Numerical simulations of the model construction stress-strain state with different arrangement of piezoactuators: upper and middle,-were performed. Numerical simulations were carried out in a three-dimensional setting taking into account the complete technological scheme of laying and anisotropy of the properties of reinforcing layers. The results of numerical experiments revealed the areas of maximum stress. Recommendations for the MFC’s embedding into composite materials were formulated.

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The Probot—an active robot for prostate resection

Proceedings of the Institution of Mechanical Engineers Part H Journal of Engineering in Medicine ◽

10.1243/0954411971534449 ◽

1997 ◽

Vol 211 (4) ◽

pp. 317-325 ◽

Cited By ~ 126

Author(s):

S J Harris ◽

F Arambula-Cosio ◽

Q Mei ◽

R D Hibberd ◽

B L Davies ◽

...

Keyword(s):

Transurethral Resection ◽

Human Subjects ◽

Three Dimensional ◽

Model Construction ◽

Computer Interface ◽

On Line ◽

Computer Controlled ◽

Line Imaging

As men age, their prostates can enlarge, causing urinary difficulty. Surgery to correct this [transurethral resection of the prostate (TURP)] is a skilled and time-consuming operation requiring many repetitive motions of a cutter. A robot has been developed to perform these motions, relieving the surgeon of much of the burden of surgery. This robot has been tried both in the laboratory and later on human subjects and has proved itself capable of performing prostate resection. The Probot system consists of on-line imaging and three-dimensional prostate model construction, an appropriate surgeon-computer interface, a counterbalanced mounting frame and a computer controlled robot.

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