Two-Dimensional Description Method of Process Information for 3D Assembly Instruction Publishing

2014 ◽  
Vol 602-605 ◽  
pp. 3774-3777
Author(s):  
Guang Yu Yang ◽  
Lin Tian ◽  
Dong Ping Zhao ◽  
Yu Peng Xin
Keyword(s):  
Matrix Representation ◽  
Similarity Criteria ◽  
Two Dimensional ◽  
Process Information ◽  
Two Dimension ◽  
Information Layer ◽  
Assembly Instructions ◽  
3D Assembly ◽  
Representation Method ◽  
Quick Search

To deal with the complete description and quick search in 3D assembly instruction publishing, a Two-dimension description method of process information for 3D assembly instruction publishing was presented. Two-dimensional description model of process information is established from operation description and granularity by this method. In order to organize process information with a certain description stage, the concept of process information layer was proposed, and the describe structure for process information layers was been build based on similarity criteria. Subsequently, an abstract matrix representation method is provided to express 3D process information and build the assembly instructions publishing model. Abstract matrix representation method was the key to influence the 3D process information description, Therefore, In-depth researched on it and an instantiated matrix is given. Finally, an illustrative example is used to explain an application of the proposed approach.

Multiple-Section Process Information Description Method for 3D Instruction Publishing

2013 ◽  
Vol 770 ◽  
pp. 316-319 ◽  
Author(s):  
Dong Ping Zhao ◽  
Xi Tian Tian ◽  
Jun Hao Geng ◽  
Jian Jun Tang
Keyword(s):  
Data Structure ◽  
Matrix Representation ◽  
Process Data ◽  
Process Information ◽  
Representation Method ◽  
Quick Search ◽  
Information Description

To deal with the complete description and quick search for 3D process instruction publishing, a three-section process information description method was presented based on the features of process data. First, a three-section description model for 3D process instruction publishing is established according to the application type and data structure. Subsequently, an abstract matrix representation method is provided to express 3D process information, then the specific contents of the abstract matrix is analyzed and an instantiated matrix is given. Finally, an illustrative example is used to explain an application of the proposed approach.

scholarly journals Upscaling with the dynamic two-layer classification concept (D2C): TreeMig-2L, an efficient implementation of the forest-landscape model TreeMig

2015 ◽  
Vol 8 (7) ◽  
pp. 5535-5575
Author(s):  
J. E. M. S. Nabel
Keyword(s):  
Vegetation Dynamics ◽  
Climatic Changes ◽  
Discrete Models ◽  
Similarity Criteria ◽  
Forest Landscape ◽  
Two Dimensional ◽  
Landscape Model ◽  
Trade Off ◽  
Forest Landscape Model ◽  
Spatio Temporal

Abstract. Models used to investigate impacts of climatic changes on spatio-temporal vegetation dynamics need to balance required accuracy with computational feasibility. To enhance the computational efficiency of these models, upscaling methods are required that maintain key fine-scale processes influencing vegetation dynamics. In this paper, an adjustable method – the dynamic two-layer classification concept (D2C) – for the upscaling of time- and space-discrete models is presented. D2C aims to separate potentially repetitive calculations from those specific to single grid cells. The underlying idea is to extract processes that do not require information about a grid cell's neighbourhood to a reduced-size non-spatial layer, which is dynamically coupled to the original two-dimensional layer. The size of the non-spatial layer is thereby adaptive and depends on dynamic classifications according to pre-specified similarity criteria. I present how D2C can be used in a model implementation on the example of TreeMig-2L, a new, efficient version of the intermediate-complexity forest-landscape model TreeMig. To discuss the trade-off between computational expenses and accuracy, as well as the applicability of D2C, I compare different model stages of TreeMig-2L via simulations of two different application scenarios. This comparison of different model stages demonstrates that applying D2C can strongly reduce computational expenses of processes calculated on the new non-spatial layer. D2C is thus a valuable upscaling method for models and applications in which processes requiring information about the neighbourhood constitute the minor share of the overall computational expenses.

Which aspects of soundscape can the soundscape attributes measure?

2021 ◽  
Vol 263 (5) ◽  
pp. 1940-1944
Author(s):  
Koji Nagahata
Keyword(s):  
Human Perception ◽  
Basic Structure ◽  
Two Dimensional ◽  
Linguistic Structure ◽  
Two Dimension ◽  
Soundscape Studies ◽  
Dimension Space

The eight perceptual attributes for soundscape assessment provided in ISO/TS 12913-2: 2018 are widely used in recent soundscape studies. Several studies across the language showed that the basic structure of the soundscape appraisal two-dimension space obtained from the attributes are robust. However, this robustness of the basic structure only means the robustness of the linguistic structure of the eight perceptual attributes, and never means those attributes cover the whole human perception of the soundscapes. Some studies suggest there are some appraisal scales which cannot be expressed in the two-dimensional appraisal space. This study discusses which aspects of soundscape can the soundscape attributes measure.

Matrix Representation and Prediction of Three-Dimensional Cutting Forces

1977 ◽  
Vol 99 (4) ◽  
pp. 828-834 ◽  
Author(s):  
J. A. Kirk ◽  
D. K. Anand ◽  
C. McKindra
Keyword(s):  
Cutting Forces ◽  
Metal Cutting ◽  
Present Model ◽  
Cutting Tool ◽  
Matrix Representation ◽  
Three Dimensional ◽  
Experimental Results ◽  
Analytical Models ◽  
Two Dimensional ◽  
The Matrix

Matrix geometry techniques are applied to predicting three-dimensional cutting forces. In the present model a specific cutting plane is located and two-dimensional metal cutting theory is applied. Force predictions in this plane are then matrix transformed to three orthogonal forces acting on the cutting tool. Experimental results show the matrix model accurately predicts three-dimensional cutting forces in turning of long slender workpieces. Experimental results are also compared to other analytical models described in the literature.

SPIN DYNAMICS OF TWO-DIMENSIONAL HUBBARD SYSTEMS

1990 ◽  
Vol 04 (21) ◽  
pp. 1325-1340 ◽  
Author(s):  
DAVID KO
Keyword(s):  
High Temperature ◽  
Strong Coupling ◽  
High Temperature Superconductivity ◽  
State Of The Art ◽  
Spin Dynamics ◽  
The State ◽  
Strong Coupling Limit ◽  
Two Dimensional ◽  
Two Dimension ◽  
Basic Ideas

The discovery of high temperature superconductivity has motivated a vigorous study of the physics of Hubbard systems. Here, the properties of the spin aspects of the Hubbard system in two-dimension, in the strong coupling limit, are briefly reviewed, with the basic ideas, some of the fundamental questions and the state of the art introduced.

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