scholarly journals AUTOMATIC CORRECTION ALGORITHM OF HYFROLOGY FEATURE ATTRIBUTE IN NATIONAL GEOGRAPHIC CENSUS

2017 ◽  
Vol XLII-2/W7 ◽  
pp. 59-63
Author(s):  
C. Li ◽  
P. Guo ◽  
X. Liu
Keyword(s):  
Automatic Correction ◽  
Correction Algorithm ◽  
Basic Principles ◽  
Topological Relation ◽  
National Geographic ◽  
Structure Characteristics ◽  
And Topology ◽  
Network Proximity ◽  
Feature Attribute ◽  
Proximity Structure

A subset of the attributes of hydrologic features data in national geographic census are not clear, the current solution to this problem was through manual filling which is inefficient and liable to mistakes. So this paper proposes an automatic correction algorithm of hydrologic features attribute. Based on the analysis of the structure characteristics and topological relation, we put forward three basic principles of correction which include network proximity, structure robustness and topology ductility. Based on the WJ-III map workstation, we realize the automatic correction of hydrologic features. Finally, practical data is used to validate the method. The results show that our method is highly reasonable and efficient.

scholarly journals Analysis and research on wireless sensor networks

2021 ◽  
Vol 336 ◽  
pp. 04009
Author(s):  
Huanan Zhang
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Research Field ◽  
Wireless Sensor ◽  
Basic Principles ◽  
Structure Characteristics ◽  
Bright Future ◽  
Application Fields ◽  
Key Questions

With the development of sensor, computer and communication, the researcher attaches more and more attentions to the research of the wireless sensor networks because of its bright future in applications. This paper introduces the structure, characteristics of wireless sensor networks. Then, some key questions of the research field are discussed based on the basic principles. The end of paper discusses the application fields of wireless sensor networks and comes to a conclusion.

MOAA and Topology Judgment for Mesh Construction

2004 ◽  
Author(s):  
Wen-Jie Cheng ◽  
Arzu Gonenc Sorguc ◽  
Junichi Shinoda ◽  
Ichiro Hagiwara
Keyword(s):  
Topology Optimization ◽  
Data Set ◽  
Basic Principles ◽  
Intersection Problem ◽  
Line Segments ◽  
Original Surface ◽  
Aspect Ratios ◽  
And Topology ◽  
Maximum Angle ◽  
Data Points

In this paper, the Maximum Opposite Angulation Approach (MOAA) for 3-D including the topology optimization is discussed. The MOAA algorithm is developed to generate meshes in 2-D and 3-D. The basic principles of the algorithm both in 2-D applications and in 3-D applications, is to pre-set uniformity to the initial data set to form point pairs yielding possible shortest line segments. These line segments are connected with the points providing the maximum angle for the vertex of the triangular mesh to be constructed. Thus, the algorithm provides triangular meshes having well balanced interior angles and good aspect ratios. The MOAA algorithm can be proved similar to the Delaunay’s approach in 2-D from the principle and with the quickest speed. In 3-D, it was also shown that it is much more efficient than many Delaunay class algorithms with mesh architectures preserving the topology, for uniformly organized data points. In this study, the topology optimization together with the MOAA algorithm is presented to improve the precision of reconstruction of the original surface. In this context, topology judgment for intersection problem in 3-D, distortion phenomenon, the possibility of loosing some characteristics of the original surface is thoroughly investigated.

scholarly journals Improved Jitter Elimination and Topology Correction Method for the Split Line of Narrow and Long Patches

2018 ◽  
Vol 7 (10) ◽  
pp. 402 ◽  
Author(s):  
Chengming Li ◽  
Yong Yin ◽  
Pengda Wu ◽  
Xiaoli Liu ◽  
Peipei Guo
Keyword(s):  
Delaunay Triangulation ◽  
Geometric Structure ◽  
Original Data ◽  
Correction Method ◽  
Guizhou Province ◽  
Correction Algorithm ◽  
Topological Constraint ◽  
And Topology ◽  
Sample Data ◽  
Thematic Data

Extracting the split line of narrow and long patches is important for the generalization of land-use thematic data. There are two commonly used methods for extracting the split lines: One is based on Delaunay triangulation and the other is based on straight skeletons. However, it is difficult for the straight skeleton method to preserve geometric structure and topological consistency with the original data when dealing with polygons that have irregularity and complexity of junctions. Therefore, we propose an improved jitter elimination and topology correction method for split lines based on a constrained Delaunay triangulation. First, a split line adjustment algorithm based on the geometric structure of the polygon is proposed to eliminate the jitters. Second, a split line topology correction algorithm is proposed for nodes with degree 1 or degree 2, considering the boundary topological constraint. The reliability of the proposed method is verified by comparing it with the straight skeleton method using sample data and the superiority of the proposed method is verified by using actual data from China’s geographical conditions census in the Guizhou province.

scholarly journals Basic Principles and Practical Applications of the Cahn–Hilliard Equation

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Junseok Kim ◽  
Seunggyu Lee ◽  
Yongho Choi ◽  
Seok-Min Lee ◽  
Darae Jeong
Keyword(s):  
Computational Simulation ◽  
Image Inpainting ◽  
Fluid Flows ◽  
Basic Mechanism ◽  
Basic Principles ◽  
Practical Applications ◽  
And Topology ◽  
Elastic Inhomogeneity ◽  
Cahn Hilliard Equation ◽  
Multiphase Fluid

The celebrated Cahn–Hilliard (CH) equation was proposed to model the process of phase separation in binary alloys by Cahn and Hilliard. Since then the equation has been extended to a variety of chemical, physical, biological, and other engineering fields such as spinodal decomposition, diblock copolymer, image inpainting, multiphase fluid flows, microstructures with elastic inhomogeneity, tumor growth simulation, and topology optimization. Therefore, it is important to understand the basic mechanism of the CH equation in each modeling type. In this paper, we review the applications of the CH equation and describe the basic mechanism of each modeling type with helpful references and computational simulation results.

scholarly journals TO THE QUESTION OF BASIC PRINCIPLES OF CONSTRUCTION OF THE MESOSCOPIC MODEL OF THE CISTEINE-SILVER SOLUTION

2020 ◽  
pp. 7-17
Author(s):  
Максим Дмитриевич Малышев ◽  
Павел Олегович Бабуркин ◽  
Любовь Витальевна Жеренкова ◽  
Павел Михайлович Пахомов ◽  
Павел Вячеславович Комаров
Keyword(s):  
Large Scale ◽  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Atomistic Modeling ◽  
Basic Principles ◽  
Structure Characteristics ◽  
Electrostatic Stabilization ◽  
Silver Solution ◽  
Mesoscopic Level

Исследована структура агрегатов меркаптида серебра (МС) в рамках крупномасштабного атомистического моделирования цистеин-серебряного раствора (ЦСР). Выполнен анализ строения, характеристик и потенциала взаимодействия супрамономеров в составе агрегатов МС. Эти данные являются основой для перехода на мезоскопический уровень моделирования ЦСР. В работе также рассмотрен вопрос о роли соли инициатора в нарушении электростатической стабилизации ЦСР. The analysis of the structure of silver mercaptide (SM) aggregates obtained in the framework of large-scale atomistic modeling of L-cysteine and silver nitrate solution (CSS) was performed. Information was obtained on the structure, characteristics and interaction of supramonomers forming SM aggregates. These data can serve as the basis for the transition to the mesoscopic level of CSS simulations The paper also examined the role of the initiator salt in disrupting the electrostatic stabilization of the CSS.

scholarly journals The Noise Monitoring System and Automatic Correction Algorithm

2016 ◽  
Vol 9 (9) ◽  
pp. 265-276
Author(s):  
Zeng Huapu ◽  
Li Yuting ◽  
Xu Huiyu ◽  
Pu Yunming ◽  
Qiao feng ◽  
...  
Keyword(s):  
Monitoring System ◽  
Automatic Correction ◽  
Correction Algorithm

Automatic Correction of Continuum Background in Laser-Induced Breakdown and Raman Spectrometry

2003 ◽  
Vol 57 (2) ◽  
pp. 197-207 ◽  
Author(s):  
I. B. Gornushkin ◽  
P. E. Eagan ◽  
A. B. Novikov ◽  
B. W. Smith ◽  
J. D. Winefordner
Keyword(s):  
Raman Spectra ◽  
Molecular Spectroscopy ◽  
Background Correction ◽  
Identification Accuracy ◽  
Automatic Correction ◽  
Correction Algorithm ◽  
Raman Spectrometry ◽  
Wide Range ◽  
Laser Induced Breakdown ◽  
Atomic And Molecular Spectroscopy

The goal of this work was the development and evaluation of an algorithm for the approximation and automatic subtraction of continuum backgrounds in laser-induced breakdown and Raman spectra. The background correction algorithm was applied to simple and complex spectra and its effect on identification accuracy was studied. Linear correlation was used for the identification of plastic samples using both laser-induced breakdown and Raman spectra. For both techniques, the algorithm successfully eliminated continuum background without compromising spectral integrity. A significant improvement in the percentage of correct plastic identifications was observed for Raman spectra. The approach should be applicable to a wide range of background correction problems in atomic and molecular spectroscopy.

Current Issues: Evidence-Based Practice for the Real World: Thoughts on Clinical Education in Communication Disorders

2010 ◽  
Vol 20 (3) ◽  
pp. 100-105 ◽  
Author(s):  
Anne K. Bothe
Keyword(s):  
Clinical Education ◽  
Real World ◽  
Evidence Based Practice ◽  
Communication Disorders ◽  
University Faculty ◽  
Evidence Based ◽  
Speech Language Pathology ◽  
Basic Principles ◽  
The Real ◽  
Language Pathology

This article presents some streamlined and intentionally oversimplified ideas about educating future communication disorders professionals to use some of the most basic principles of evidence-based practice. Working from a popular five-step approach, modifications are suggested that may make the ideas more accessible, and therefore more useful, for university faculty, other supervisors, and future professionals in speech-language pathology, audiology, and related fields.

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