Research on the Multi-Disciplinary Optimization Design Technology for the ETO Product

2011 ◽  
Vol 55-57 ◽  
pp. 1177-1182
Author(s):  
Miao Fen Zhu ◽  
Shao Hui Su ◽  
You Ping Gong ◽  
Guo Jin Chen
Keyword(s):  
Knowledge Management ◽  
Optimization Design ◽  
Simulation Optimization ◽  
Design Criterion ◽  
Hydraulic Lift ◽  
Knowledge Modeling ◽  
Knowledge Reasoning ◽  
Knowledge Expression ◽  
Custom Made ◽  
Optimization Function

This paper provides one kind of knowledge construction to let the engineers and technicians apply the knowledge to the product’s simulation optimization function, the ability of establishing the design criterion and the technical standard, and the convenient knowledge reuse tool to manage the knowledge effectively. In this paper the knowledge expression, the knowledge tool as well as the inference engine of the knowledge library is packed as the knowledge management module which is called for the design simulation optimization system of the outside products. The application frame of the knowledge module takes the knowledge management as a center, and form finally the knowledge management engine embedded in the design simulation system based on the unified multi-disciplinary modeling. Therefore, the knowledge management module is divided into the knowledge modeling, the knowledge expression, the knowledge reasoning, and the knowledge management. Aiming at the deep custom-made degree of the multi-functional hydraulic lift machinery, the complex restraint and coupling relations between the components and parts, the non-unified model descriptions between the multi-disciplines, and the difficult management of massive isomerous data, the basic frame of the multi-disciplinary configuration optimization design for the ETO product of the hydraulic lift machinery is proposed in the paper.

An Ontological Approach to Enterprise Knowledge Modeling in a Shipping Company

2011 ◽  
Vol 7 (4) ◽  
pp. 70-84
Author(s):  
Sung-kwan Kim ◽  
Joe Felan ◽  
Moo Hong Kang
Keyword(s):  
Knowledge Management ◽  
Organizational Knowledge ◽  
Modeling Language ◽  
Knowledge Modeling ◽  
Knowledge Model ◽  
Holistic View ◽  
Knowledge Resources ◽  
Shipping Company ◽  
Knowledge Models ◽  
Ontological Approach

Modeling approaches are gaining popularity in knowledge management (KM), especially in specifying knowledge contents. This paper addresses the enterprise knowledge modeling. An enterprise knowledge model provides users with an integrated, holistic view of organizational knowledge resources. Employing a reliable methodology is critical to building successful enterprise knowledge models. A good methodology provides an effective and efficient mechanism for developing a model. This paper first reviews the enterprise knowledge modeling (EKM) and its methodologies. An ontology-based EKM (OBEKM) methodology is proposed. Its products, procedures, and modeling language are described. The methodology is then applied to the construction of a shipping company’s knowledge model for demonstration.

Target Optimization Design of Cam Curve in Zoom System

2013 ◽  
Vol 552 ◽  
pp. 44-51
Author(s):  
Chen Wei Ning ◽  
Cao Jian Zhong ◽  
Yang Hong Tao ◽  
Zhang Jian ◽  
Fan Zhe Yuan ◽  
...  
Keyword(s):  
Optimization Design ◽  
Rotation Angle ◽  
Optical Design ◽  
Zoom Lens ◽  
Pressure Angle ◽  
Cam Design ◽  
System A ◽  
Cam Follower ◽  
Optimization Function ◽  
The Stability

Zoom lens has been widely applied in all kinds of fields, and its cam optimization is the key to actualizing the performance of its optical design and the zooming process, while the smoothness and speediness of zooming movement must be considered for military and civilian use. With the incremental use of environmental requirements, it puts forward higher requests to the cam performance of lens. In order to guarantee that the cam has good stiffness in the case of vibration and shock environment, in the process of cam design, it not only requires curve optimal, but also needs to consider influence on the performance which is caused by reduced cam stiffness of the zoom system. A fine curve can ensure that the cam pressure angle α is smaller, and to ensure the cam follower maintains the uniform velocity and smaller acceleration in zooming process, and make the zoom system produce little impact, and whole zooming process smooth and fluent, it can reduce the zoom systems driving moment M, and can ensure the stability imaging of the zoom system. Good cam stiffness K can make the zoom lens have good stability in vibration environment, and make sure that the image quality. M and K respectively up to the pressure angle α of zoom curve and the rotation angle θ of zoom curve in cam. In the new cam design process, considering the whole influence on the performance that is caused by K and M to cam, we construct the function expressions K = f (α, θ) and M = f (α, θ), and then, build target optimization function with K and M, optimize the relationship between pressure angle α of zoom curve and rotation angle θ, looking for the optimal value for the stiffness K and the cam system driving moment M , and improve overall performance of the zoom cam .

Legal Ontologies in ICT and Law

2011 ◽  
pp. 51-66
Author(s):  
Witold Abramowicz ◽  
Piotr Stolarski ◽  
Tadeusz Tomaszewski
Keyword(s):  
Knowledge Management ◽  
General Theory ◽  
Theory Of Knowledge ◽  
Ontology Engineering ◽  
Knowledge Modeling ◽  
Specialized Knowledge ◽  
General Application ◽  
Knowledge Models ◽  
Usability Issue ◽  
Legal Ontologies

As discussed in the fouth chapter, re-usability is frequently declared as sine qua non feature of modern ontology engineering. Although thoroughly examined in general theory of knowledge management models the re-usability issue is still barely a declaration in the domain of legal ontologies. The similar situation also applies to statute-specific ontologies. Those knowledge modeling entities are well described especially as an opposition to the general application legal ontologies. Yet it is trivial to say that most of the developed legal ontologies so far are those generic ones. And this sole fact should not surprise as the very specialized knowledge models – usually harder to develop – are at the same time narrowed with their utility. Of course in terms of re-usability this simply means that this feature may be largely disabled in this kind of knowledge models. In this chapter the authors face both challenges, i.e. as an excuse for presentation of the most interesting in their opinion trends and works in the field the authors demonstrate the practical approach to modeling copyright law case by re-using statute-specific ontologies.

A Method for Knowledge Modeling with Unified Modeling Language (UML)

2011 ◽  
pp. 228-242 ◽  
Author(s):  
Sung-kwan Kim ◽  
Seongbae Lim ◽  
Robert B. Mitchell
Keyword(s):  
Knowledge Management ◽  
Unified Modeling Language ◽  
Modeling Language ◽  
Knowledge Modeling ◽  
Knowledge Model ◽  
Shipping Company ◽  
Unified Modeling ◽  
Vessel Scheduling ◽  
Maritime Shipping ◽  
Successful Business

Since knowledge management (KM) is considered to be an important function of the successful business operation, many organizations are embracing KM. The success of a KM project is dependent upon its contents. This paper presents a method for building an effective knowledge model which can help businesses analyze and specify knowledge contents. The method takes a decision-oriented view. For the modeling language of the method, Unified Modeling Language (UML) has been chosen. The method is applied to the vessel scheduling process in a maritime shipping company. The steps and rules are explained using an example, and the strengths and weaknesses of the method are discussed.

scholarly journals An Analysis Tool for the Installation of Submarine Cables in an S-Lay Configuration Including “In and Out of Water” Cable Segments

2020 ◽  
Vol 8 (1) ◽  
pp. 48 ◽  
Author(s):  
Vasileios A. Mamatsopoulos ◽  
Constantine Michailides ◽  
Efstathios E. Theotokoglou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Criterion ◽  
Limiting Factors ◽  
Radius Of Curvature ◽  
Analysis Tool ◽  
Analysis Software ◽  
Element Analysis ◽  
Analysis And Design ◽  
Custom Made

Today, the offshore oil and gas and wind power industry is a heavily regulated segment, and current standards have established restrictions which yield a very limited weather window for submarine cable installations due to experience with cable failure in bad weather. There are two main limiting factors in current practice during cable installation of an S-lay configuration: the design criterion for the minimum allowable radius of curvature in the touch down point and the avoidance of axial compression in the touch down zone. Accurate assessment of the cable integrity during offshore installation has drawn great attention and is related to the existing available analysis and design tools. The main purpose of this paper is to develop and propose a quick and easy custom-made analysis tool, which is able to export similar results as sophisticated finite element analysis software. The developed tool utilizes analytical equations of a catenary-type submarine structure extended to account for varying cross-sections with different weights and/or stiffnesses, as is the real practice. A comparative study is presented in this paper to evaluate the significance for the modeling of the “out of water” cable segment required for accurate safety factor quantification during a laying operation. The efficiency and accuracy of the proposed tool are proven through a validation study comparing the results and the computational effort and time with commercial finite element analysis software. The analysis error in the case of not modeling the “out of water” cable part is significant, especially in shallow water areas, which proves the importance of using the proposed analysis tool.

The Study of Ontology Reasoning to Semantic Web

2011 ◽  
Vol 181-182 ◽  
pp. 230-235
Author(s):  
Xian Yi Cheng ◽  
Ai Qin Yang ◽  
Xue Yun Cheng
Keyword(s):  
Semantic Web ◽  
Description Logic ◽  
Practical Reasoning ◽  
Reasoning Task ◽  
Ontology Construction ◽  
Semantic Reasoning ◽  
Ontology Reasoning ◽  
Knowledge Reasoning ◽  
Ontology Language ◽  
Knowledge Expression

The next generation Web, Semantic Web, has recently been drawn considerable attention from both academia and industry. The ontology is regarded as the cornerstone of the Semantic Web, is playing an important role with the knowledge expression and knowledge reasoning. Ontology language, Description Logic and the relationships of them were presented. This paper analyzes the principle of semantic reasoning about DL and reasoning machine. Finally, performers testify the practical reasoning task about a concrete Ontology construction.

Legal Ontologies in ICT and Law

2013 ◽  
pp. 34-49
Author(s):  
Witold Abramowicz ◽  
Piotr Stolarski ◽  
Tadeusz Tomaszewski
Keyword(s):  
Knowledge Management ◽  
General Theory ◽  
Theory Of Knowledge ◽  
Ontology Engineering ◽  
Knowledge Modeling ◽  
Specialized Knowledge ◽  
General Application ◽  
Knowledge Models ◽  
Usability Issue ◽  
Legal Ontologies

Re-usability is frequently declared as sine qua non feature of modern ontology engineering. Although thoroughly examined in general theory of knowledge management models the re-usability issue is still barely a declaration in the domain of legal ontologies. The similar situation also applies to statute-specific ontologies. Those knowledge modeling entities are well described especially as an opposition to the general application legal ontologies. Yet it is trivial to say that most of the developed legal ontologies so far are those generic ones. And this sole fact should not surprise as the very specialized knowledge models – usually harder to develop – are at the same time narrowed with their utility. Of course in terms of re-usability this simply means that this feature may be largely disabled in this kind of knowledge models. In this chapter we face both challenges, i.e. as an excuse for presentation of the most interesting in our opinion trends and works in the field we will demonstrate the practical approach to modeling copyright law case by re-using statute-specific ontologies.

Optimization Design of a Small Aperture Cassegrain Antenna for 8mm Band Detector

2013 ◽  
Vol 411-414 ◽  
pp. 1425-1428
Author(s):  
Jiso Jiso Fan ◽  
Li Wu ◽  
Shu Sheng Peng
Keyword(s):  
Optimization Design ◽  
Simulation Optimization ◽  
Beam Width ◽  
Sidelobe Level ◽  
Small Aperture ◽  
Cassegrain Antenna ◽  
Main Reflector

In this paper, a small aperture Cassegrain antenna of 8mm band detector is optimally designed, whose main reflector diameter is limited at 96mm (diameter less than 30λ). After design and processing, this antenna measured results show its gain is 26dB, the sidelobe level is close to-12dB and-3dB beam-width is 4.8 °.These are consistent with simulation optimization results.

Optimization of Stamping Parameters Using Stochastic Focusing Search Algorithm

2012 ◽  
Vol 479-481 ◽  
pp. 1963-1967
Author(s):  
Ling Long ◽  
Chao Song ◽  
Guo Fu Yin
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Optimization Design ◽  
Search Algorithm ◽  
Optimization Procedure ◽  
Optimization Method ◽  
Forming Process ◽  
Metal Forming Process ◽  
Optimization Function

A new kind of swarm intelligence algorithm called stochastic focusing search(SFS) is proposed and applied to optimize sheet metal forming process in this paper. The steps of the optimization procedure include combining numerical simulation technology with orthogonal experiments to provide training samples for BP net, and producing the fitted function as optimization function for SFS algorithm. The validation of the final optimization results by a rectangular box part stamping case shows that this kind of optimization methodology is correct and reliable for the design of deep drawing process. Advantages of the SFS algorithm are demonstrated that SFS has good global searching ability and fast convergence speed in finding optimal solutions, which means the optimization method using SFS algorithm can provide a competitive way of solving the optimization design problems in sheet metal forming.

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