A Point Set Analysis Method for Hull Blocks Based on CPD and Engineering Constraints

2019 ◽  
Author(s):  
Guan Guan ◽  
Hongling Liao
Keyword(s):  
Analysis Method ◽  
Point Set ◽  
Engineering Constraints

A Point Set Analysis Method for Hull Blocks Based on CPD and Engineering Constraints

2020 ◽  
Vol 36 (02) ◽  
pp. 105-114
Author(s):  
Guan Guan ◽  
Hongling Liao
Keyword(s):  
Data Analysis ◽  
Multiobjective Optimization ◽  
Error Distribution ◽  
Analysis Method ◽  
Practical Engineering ◽  
Coherent Point Drift ◽  
Point Set ◽  
Optimal Data Analysis ◽  
Important Basis ◽  
Engineering Constraints

A point set analysis method considering the practical engineering constraints has been proposed in this article. First, the coherent point drift method was used to obtain the initial values of data analysis. Second, the error distribution in different directions was expressed by weight vectors. Last, the multiobjective optimization model was built and the engineering constrains were introduced into the multioptimization objective function to achieve the optimal data analysis results. The experimental results proved that the method could obtain the reasonable data analysis results, which met the engineering constraints. It provides the important basis for the subsequent assembly.

scholarly journals A FAST assembly simulation analysis method for hull blocks with engineering constraints

2021 ◽  
pp. 1-24
Author(s):  
Guan Guan ◽  
Hongling Liao ◽  
Qu Yang
Keyword(s):  
Simulation Analysis ◽  
Integrated System ◽  
Analysis Method ◽  
Matching Model ◽  
Analytic Hierarchy ◽  
Assembly Simulation ◽  
Optimization Function ◽  
Coherent Point Drift ◽  
Assembly Constraints ◽  
Engineering Constraints

In order to effectively improve the assembly efficiency for hull blocks, an assembly simulation analysis method considering engineering constraints is proposed in this paper, and an integrated system of shipbuilding accuracy analysis and assembly analysis considering multi-constraints is developed. The method is divided into pre-matching model and fine matching model. In the pre-matching model, an Improved Coherent Point Drift (ICPD) algorithm is used to obtain more accurate initial matching values. The fine matching model firstly uses the Analytic Hierarchy Process (AHP) algorithm to automatically obtain the constrained weights, then the weights vector is used to add the assembly constraints for hull blocks such as straightness, hard point constraints etc. into the multi-objective optimization function. By solving the function, the optimum positioning location and the most reasonable adjustment scheme are obtained. This method shortens the occupancy time of the equipment used to build the hull, reduces the workload of the staff, and improves the efficiency and quality of shipbuilding. The integrated system adds engineering constraints analysis module and the function of automatically finding and eliminating error measurement points. Through the verification of the examples, the integrated system realizes the automation and intellectualization of the assembly for hull blocks.

Computational Micrograph Registration with Sieve Processes

1996 ◽  
Vol 54 ◽  
pp. 440-441
Author(s):  
P.J. Phillips ◽  
J. Huang ◽  
S. M. Dunn
Keyword(s):  
Planar Graph ◽  
Efficient Algorithm ◽  
Spatial Organization ◽  
Spatial Arrangement ◽  
Stereo Image ◽  
Image Model ◽  
Geometric Invariants ◽  
Point Set

In this paper we present an efficient algorithm for automatically finding the correspondence between pairs of stereo micrographs, the key step in forming a stereo image. The computation burden in this problem is solving for the optimal mapping and transformation between the two micrographs. In this paper, we present a sieve algorithm for efficiently estimating the transformation and correspondence.In a sieve algorithm, a sequence of stages gradually reduce the number of transformations and correspondences that need to be examined, i.e., the analogy of sieving through the set of mappings with gradually finer meshes until the answer is found. The set of sieves is derived from an image model, here a planar graph that encodes the spatial organization of the features. In the sieve algorithm, the graph represents the spatial arrangement of objects in the image. The algorithm for finding the correspondence restricts its attention to the graph, with the correspondence being found by a combination of graph matchings, point set matching and geometric invariants.

Impact of analysis method on anthocyanin content of elderberry products

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
C Chrubasik ◽  
T Maier ◽  
M Luond ◽  
A Schieber
Keyword(s):  
Anthocyanin Content ◽  
Analysis Method

An Analysis Method of Rollover Stability for Heavy Trucks

CICTP 2020 ◽  
2020 ◽  
Author(s):  
Hao Zhang ◽  
Yue Li ◽  
Cheng-Qiang Zong ◽  
Chuan-Jin Ou ◽  
Bing-Tao Li
Keyword(s):  
Analysis Method ◽  
Heavy Trucks ◽  
Rollover Stability

Pengaruh Faktor Demografi Dan Iklim Organisasi Terhadap Niat Whistleblowing Internal

2017 ◽  
Vol 4 (1) ◽  
pp. 12-22
Author(s):  
Priyastiwi Priyastiwi
Keyword(s):  
Data Analysis ◽  
Data Collection ◽  
Organizational Climate ◽  
Demographic Factors ◽  
Financial Statement ◽  
Research Use ◽  
Analysis Method ◽  
Financial Statement Fraud ◽  
Internal Whistleblowing ◽  
Collection Methods

This study aimed to examine the effect of demographic factors and organizational climate on the intention of internal whistleblowing. The sample was an accountant who had worked as an auditor. Data collection methods using questionnaires with financial statement fraud case scenarios. This research use ANOVA data analysis method to examine demographic factors include age, gender, and experience, as well as organizational climate on the intention of internal whistleblowing. The results showed only the experience of demographic factors that influence internal whistleblowing. Besides internal whistlelowing also influenced by organizational climate in the company.Keyword: Demographics, Organizational Climate, Whistleblowing

Penerapan Good Corporate Governance Pada Nazhir Tunai Yang Terdaftar Di Badan Wakaf Indonesia Studi Kasus Di Tabung Wakaf Indonesia Dan YPI Wakaf AL Azhar

Liquidity ◽  
2018 ◽  
Vol 5 (2) ◽  
pp. 95-105
Author(s):  
Dede Dahlan
Keyword(s):  
Corporate Governance ◽  
Likert Scale ◽  
Money Management ◽  
Analysis Method ◽  
Purposive Sampling ◽  
Good Corporate Governance ◽  
Management Institutions

There are many understanding of society, that cash waqf it should not be legal. So is the trust factor of people's money management institutions waqf (Nazhir) is still a constraint. Research conducted in Tabung Wakaf Indonesia (TWI) and Wakaf Al Azhar this analysis method, namely the principles of Good Corporate Governance (GCG). Here researchers using purposive sampling, followed by giving a score using the Likert Scale. To determine whether the data obtained in the field is valid or not, the researchers used a method tri angular source. The results of the assessment of GCG in TWI and Wakaf Al-Azhar obtain a total score of at Tabung Wakaf Indonesia amounting to 3.15. Then the bias is said that the implementation of GCG at TWI and Wakaf Al-Azhar declared "GOOD ENOUGH". While the results of the evaluation tri angular mention, that the data obtained from the results of research in the field both TWI and in Wakaf Al-Azhar, when compared with the corporate governance principles can be declared invalid according to the KNKG.

Sign in / Sign up

Export Citation Format

Share Document