scholarly journals Three-dimensional book data page segmentation and extraction method using Laplace equation

2021 ◽  
Vol 8 (2) ◽  
pp. 223-236
Author(s):  
Jiarui Ou ◽  
Zhongjiang Han ◽  
Koji Koyamada
Keyword(s):  
Laplace Equation ◽  
Extraction Method ◽  
Three Dimensional ◽  
Page Segmentation ◽  
Data Page

On the Cauchy Problem for the Three-Dimensional Laplace Equation

2021 ◽  
Vol 65 (2) ◽  
pp. 49-64
Author(s):  
A. B. Khasanov ◽  
F. R. Tursunov
Keyword(s):  
Cauchy Problem ◽  
Laplace Equation ◽  
Three Dimensional ◽  
The Cauchy Problem

scholarly journals Characterization of non-metallic inclusions in corrosion -resistance nickel - based EP718 and 718 alloys by using electrolytic extraction method

2019 ◽  
Vol 121 ◽  
pp. 04004 ◽  
Author(s):  
Andrey Karasev ◽  
Ekaterina Alekseeva ◽  
Aleksey Lukianov ◽  
Pär G. Jönsson
Keyword(s):  
Corrosion Resistance ◽  
Extraction Method ◽  
Oil And Gas ◽  
Three Dimensional ◽  
Steel Production ◽  
Immersion Test ◽  
Corrosion Properties ◽  
Electrolytic Extraction ◽  
Electrochemical Tests ◽  
Metallic Inclusions

It is known that non-metallic inclusions (NMI) that are formed during steel production and heat treatment can significantly affect the properties of final steel products. Therefore, it is very important to be able to determine the content of harmful NMI in steels. Nickel-based alloys are widely used in the oil and gas recovery industry, due to a good combination of strength and corrosion properties. Earlier studies have shown that the corrosion properties in immersion test and electrochemical tests for Ni-based EP718 alloys are slightly lower than that for 718 alloys. The focus in this study was the influence of different NMI on the corrosion resistance of these alloys. The characteristics of inclusions (such as size, morphology, and chemical composition) were analysed by using the electrolytic extraction method followed by three-dimensional investigations using SEM in combination with EDS. It was found that some non-metallic inclusions in EP718 alloys significantly reduce its corrosion resistance. It was also shown that a primary dissolution of the metal matrix occurs around certain inclusions during electrolytic extraction. Based on obtained results, the corrosion active non-metallic inclusions can be determined in these Nickel-base alloys and some recommendations for optimization of their production technology can be formulated.

Research on Web Intelligent Information Extraction Method

2014 ◽  
Vol 539 ◽  
pp. 464-468
Author(s):  
Zhi Min Wang
Keyword(s):  
Information Extraction ◽  
Extraction Method ◽  
Experimental Results ◽  
Accurate Information ◽  
Web Page ◽  
Page Segmentation ◽  
Segmentation Technique ◽  
Ontology Extraction ◽  
Intelligent Information

The paper introduces segmentation ideas in the pretreatment process of web page. By page segmentation technique to extract the accurate information in the extract region, the region was processed to extract according to the rules of ontology extraction , and ultimately get the information you need. Through experiments on two real datasets and compare with related work, experimental results show that this method can achieve good extraction results.

scholarly journals An Extraction Method of Volleyball Spiking Trajectory and Teaching Based on Wireless Sensor Network

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Meifang Wang ◽  
Zhange Liang
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Extraction Method ◽  
Teaching Method ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Wireless Sensor ◽  
Data Link ◽  
Speed Error ◽  
Spatial Coordinates

It is helpful to analyze volleyball spiking technology and improve spiking quality to extract volleyball spiking trajectory. This article studies the extraction method and teaching method of volleyball spiking trajectory based on a wireless sensor network. The acceleration sensor and gyroscope sensor are used to collect the spiking action state information of volleyball players. The collected information is transmitted to the PC terminal through the wireless sensor network, including physical layer, data link layer, network layer, transmission layer, and application layer, using the LEACH clustering routing protocol algorithm. In the PC terminal, the feedback filtering method is used to preprocess the received information and calculate the integral of each sensor node’s acceleration, connecting the spatial coordinates of each time to obtain the upper limb trajectory in three-dimensional space and realize the trajectory extraction of volleyball spike action. The experimental results show that the position error is less than 0.01 m and the speed error is less than 0.15 m/s. The application of this method in volleyball teaching can effectively improve the quality of volleyball teaching.

Validation of a three-dimensional hand scanning and dimension extraction method with dimension data

Ergonomics ◽  
2008 ◽  
Vol 51 (11) ◽  
pp. 1672-1692 ◽  
Author(s):  
Zhizhong Li ◽  
Chien-Chi Chang ◽  
Patrick G. Dempsey ◽  
Lusha Ouyang ◽  
Jiyang Duan
Keyword(s):  
Extraction Method ◽  
Three Dimensional
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