Structure factor model-based approach for analyzing two-dimensional impedance map and studying scattering from polydisperse dense media

2017 ◽  
Author(s):  
Kazuki Tamura ◽  
Emilie Franceschini ◽  
Jonathan Mamou ◽  
Tadashi Yamaguchi
Keyword(s):  
Structure Factor ◽  
Factor Model ◽  
Two Dimensional ◽  
Model Based ◽  
Dense Media

Exponential ergodicity of an affine two-factor model based on the α-root process

2017 ◽  
Vol 49 (4) ◽  
pp. 1144-1169 ◽  
Author(s):  
Peng Jin ◽  
Jonas Kremer ◽  
Barbara Rüdiger
Keyword(s):  
Parameter Estimation ◽  
Factor Model ◽  
Estimation Problem ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Parameter Estimation Problem ◽  
Exponential Ergodicity ◽  
Model Based ◽  
Defaultable Bonds ◽  
Two Dimensional Model

Abstract We study an affine two-factor model introduced by Barczy et al. (2014). One component of this two-dimensional model is the so-called α-root process, which generalizes the well-known Cox–Ingersoll–Ross process. In the α = 2 case, this two-factor model was used by Chen and Joslin (2012) to price defaultable bonds with stochastic recovery rates. In this paper we prove exponential ergodicity of this two-factor model when α ∈ (1, 2). As a possible application, our result can be used to study the parameter estimation problem of the model.

scholarly journals Extended VIKOR-QUALIFLEX Method Based on Trapezoidal Fuzzy Two-Dimensional Linguistic Information for Multiple Attribute Decision-Making with Unknown Attribute Weight

Mathematics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 37
Author(s):  
Ye Li ◽  
Yisheng Liu
Keyword(s):  
Decision Making ◽  
Qualitative Evaluation ◽  
Multiple Attribute Decision Making ◽  
Two Dimensional ◽  
Linguistic Variables ◽  
Linguistic Information ◽  
Attribute Weight ◽  
Model Based ◽  
Subjective Weight ◽  
Multiple Attribute

Considering the advantages of trapezoid fuzzy two-dimensional linguistic variables (TrF2DLVs), which can not only accurately describe the qualitative evaluation but also use qualitative linguistic variables (LVs) to describe the confidence level of this evaluation in the second dimension, this paper proposes a novel method based on trapezoidal fuzzy two-dimensional linguistic information to solve multiple attribute decision-making (MADM) problems with unknown attribute weight. First, a combination weight model is constructed, which covers a subjective weight determination model based on the proposed trapezoidal fuzzy two-dimensional linguistic best-worst method (TrF2DL-BWM) and an objective weight determination model based on the proposed CRITIC method. Then, in order to accurately rank the alternatives, an extended VIKOR-QUALIFLEX method is proposed, which can measure the concordance index of each ranking combination by means of group utility and individual maximum regret value of each evaluation alternative. Finally, a practical problem of lean management assessment for industrial residential projects is solved by the proposed method, and the effectiveness and advantages of the method are demonstrated by comparative analysis and discussion.

Model-based PPC verification methodology with two dimensional pattern feature extraction

2003 ◽  
Author(s):  
Kohji Hashimoto ◽  
Takeshi Ito ◽  
Takahiro Ikeda ◽  
Shigeki Nojima ◽  
Soichi Inoue
Keyword(s):  
Feature Extraction ◽  
Two Dimensional ◽  
Model Based ◽  
Verification Methodology

Flow Over a Cylinder at a Plane Boundary—A Model Based Upon (k–ε) Turbulence

1989 ◽  
Vol 111 (4) ◽  
pp. 414-419 ◽  
Author(s):  
T. Solberg ◽  
K. J. Eidsvik
Keyword(s):  
Pressure Gradient ◽  
Coordinate System ◽  
Adverse Pressure Gradient ◽  
Plane Boundary ◽  
Length Scale ◽  
Two Dimensional ◽  
Curvilinear Coordinate System ◽  
Recirculating Flow ◽  
Model Based ◽  
Curvilinear Coordinate

A model for two-dimensional flows over a cylinder at a plane boundary is developed. The model, based upon a (k-ε) turbulence closure, is formulated in a curvilinear coordinate system based upon frictionless flow. A length scale modification in areas of adverse pressure gradient and recirculating flow appears to be more realistic than the standard (k-ε) model. The main features of the predicted flow do not depend critically upon the details of the grid or model, which means that a well defined solution is obtained. The solution appears to be reasonable and validated to the extent that the data permits.

scholarly journals Using a game engine to visualize the Main Building of the Warsaw University of Technology in a mobile application

2020 ◽  
Vol 52 (2) ◽  
pp. 61-73
Author(s):  
Jacek Bernard Marciniak ◽  
Hubert Janicki
Keyword(s):  
Mobile Application ◽  
3D Model ◽  
Indoor Navigation ◽  
Navigation Systems ◽  
Two Dimensional ◽  
Game Engine ◽  
Main Building ◽  
Model Based ◽  
University Of Technology ◽  
Source Data

AbstractThe aim of the study presented in this article is to identify and analyse the problems which arise when creating a 3D model based on two-dimensional data and its import into a game engine and then developing algorithms to automate this process. The authors decided that they would use the Unity game engine to create an application presenting the results of modelling the interior of the Main Building of the Warsaw University of Technology. The work was divided into stages in which problems related to the adopted method were identified and the automation of selected activities was suggested. The main tasks performed during the study included processing the source data into a 3D model along with the correction of errors made during this process, detailing the model by adding characteristic elements of the building’s interior, and creating the so-called game scene in the Unity game engine along with the implementation of the application’s behaviour. The developed software can be integrated with indoor navigation systems, and the implemented scripts can be used during the preparation of other models.

Research on Key Technologies for Construction of Three-Dimensional Machining Procedure Model Based Definition

2014 ◽  
Vol 1037 ◽  
pp. 464-467
Author(s):  
Hong Lei Zhang ◽  
Yu Guo ◽  
Zhi Cui ◽  
Yong Zeng ◽  
Tie Jun Yuan
Keyword(s):  
Process Planning ◽  
Process Model ◽  
Three Dimensional ◽  
Design Model ◽  
Two Dimensional ◽  
Model Based ◽  
Key Technologies ◽  
Procedure Model

Three-dimensional machining procedure models are used for generating three-dimensional process model and process planning that support machining. It can be realized through extracting information of three-dimensional design model. The consistency of data and visualization of machining can be improved using the technologies for parts, which are compared with the current two-dimensional technology. The key technologies and framework for construction of three-dimensional machining procedure model based definition are researched.

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