Optimization Theory with Applications.

1970 ◽  
Vol 21 (3) ◽  
pp. 379
Author(s):  
K. B. Haley ◽  
Donald A. Pierre
Keyword(s):  
Optimization Theory

A Study on the Contour of the Radial Tire: Rolling Contour Optimization Theory — RCOT

1987 ◽  
Vol 15 (1) ◽  
pp. 3-29 ◽  
Author(s):  
K. Yamagishi ◽  
M. Togashi ◽  
S. Furuya ◽  
K. Tsukahara ◽  
N. Yoshimura
Keyword(s):  
Fuel Efficiency ◽  
Optimization Theory ◽  
Radial Tire ◽  
Braking Performance ◽  
Equilibrium Profiles ◽  
Natural Equilibrium

Abstract The Rolling Contour Optimization Theory (RCOT) can lead to improved steering, fuel efficiency, riding comfort, and braking performance of tires relative to those of conventional shape. The conventional shape has been guided by natural equilibrium profiles, while the RCOT technology shape is guided by that of the tire in motion. This reduces useless distortions caused by running the tire under load. The RCOT design focuses on the distribution of belt and sidewall tension in the tire. Controlling tension in the belt and carcass area while the tire is in motion was the key to creating this new tire shape.

Making the Most of the Internet for Failure Analysis

1998 ◽  
Author(s):  
Dan J. Bodoh
Keyword(s):  
New Media ◽  
Failure Analysis ◽  
Digital Media ◽  
Optimization Theory ◽  
The Internet ◽  
Digital Medium ◽  
Production Distribution ◽  
Digital Production ◽  
Computer Monitors ◽  
And Storage

Abstract The growth of the Internet over the past four years provides the failure analyst with a new media for communicating his results. The new digital media offers significant advantages over analog publication of results. Digital production, distribution and storage of failure analysis results reduces copying costs and paper storage, and enhances the ability to search through old analyses. When published digitally, results reach the customer within minutes of finishing the report. Furthermore, images on the computer screen can be of significantly higher quality than images reproduced on paper. The advantages of the digital medium come at a price, however. Research has shown that employees can become less productive when replacing their analog methodologies with digital methodologies. Today's feature-filled software encourages "futzing," one cause of the productivity reduction. In addition, the quality of the images and ability to search the text can be compromised if the software or the analyst does not understand this digital medium. This paper describes a system that offers complete digital production, distribution and storage of failure analysis reports on the Internet. By design, this system reduces the futzing factor, enhances the ability to search the reports, and optimizes images for display on computer monitors. Because photographic images are so important to failure analysis, some digital image optimization theory is reviewed.

The Application of Fuzzy Optimization Theory in the Selection of Foundation Improvement Methods

2015 ◽  
Vol 723 ◽  
pp. 341-344
Author(s):  
Li Juan Zhang ◽  
Jiang Han ◽  
Zhang Ming Li
Keyword(s):  
Evaluation Criteria ◽  
Fuzzy Optimization ◽  
Optimization Theory ◽  
Static Method ◽  
Optimal Selection ◽  
Construction Time ◽  
Optimal Degree ◽  
Selection Of

Research was conducted on the optimal selection of foundation improvement methods in the paper. Based on fuzzy optimization theory, four evaluation criteria such as construction time are used to evaluate the five improvement methods. The relative optimal degree 0.798 of dynamic-static consolidation method is the maximum which shows that the dynamic-static method is the optimal one; relative optimal degree and multi-evaluating criteria are used to evaluate multi-goals in the fuzzy optimization theory which will lead to the high optimal reliability result.

Carbon Efficient Supply Chain Management: Literature Review with Extensions

2013 ◽  
Vol 291-294 ◽  
pp. 1407-1412 ◽  
Author(s):  
Liang Jie Xia ◽  
Dao Zhi Zhao ◽  
Bai Yun Yuan
Keyword(s):  
Supply Chain ◽  
Carbon Emissions ◽  
Optimization Theory ◽  
Production Optimization ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
Chain Operation ◽  
Market Economy System ◽  
Supply Chain Operation ◽  
Carbon Economy

In low carbon economy, carbon emissions permit has become a kind of resource; in the market economy system, new economic relations between enterprises have appeared, these characteristics make enterprise operation cost structure and profiting pattern changed. The paper reviews the previous literature on carbon footprint, production optimization theory individual enterprise and supply chain operation management with carbon emissions constraints. Then the paper put forward four worth further research directions: Carbon emission cost distribution and scientific measurement in supply chain; supply chain operation based on consumer behavior in Low Carbon Economy Era; optimizing the allocation of carbon emissions permit in supply chain; Dynamic Multi-period operation optimization of carbon efficient supply chain.

scholarly journals Solving Fractional Polynomial Problems by Polynomial Optimization Theory

2018 ◽  
Vol 25 (10) ◽  
pp. 1540-1544 ◽  
Author(s):  
Andrea Pizzo ◽  
Alessio Zappone ◽  
Luca Sanguinetti
Keyword(s):  
Polynomial Optimization ◽  
Optimization Theory ◽  
Fractional Polynomial

Numerical Investigation and Shape Design Improvement of a Turbine Inlet Combined Valve

2017 ◽  
Author(s):  
Dongting Ye ◽  
Jiaobin Ma ◽  
Yonghui Xie ◽  
Di Zhang ◽  
Sihua Xu
Keyword(s):  
Pressure Loss ◽  
Optimization Theory ◽  
Control Valve ◽  
Good Effect ◽  
Shape Design ◽  
Inlet Valve ◽  
Pressure Loss Coefficient ◽  
Turbine Inlet ◽  
Sst Turbulence Model ◽  
Effective Role

Nowadays, the development of turbines tends to enlarge the capacity and increase the corresponding parameters. Turbine inlet valve is an important part of turbine governing system. Consequently, the high pressure turbine requires good performance of the inlet valve. In this paper, the aerodynamic performance of a real ultra-supercritical power unit turbine inlet combined valve is analyzed in detail via numerical method. At the same time, the shape design of valve plug is improved by means of specific effective methods, including geometrical analysis and quick selection of the angles. A porous medium model is adopted to deal with the strainer structure and it has a good effect on the numerical simulation. The SST turbulence model is finally selected for calculation to obtain reliable results. The results show that the flow in the combined valve presents obvious flow separation nearby the valve plug and downstream of the throat. According to the analysis of pressure and static entropy, it can be concluded that the main pressure loss is concentrated in the strainer and control valve chamber, and an obvious vortex appears in control valve chamber with energy dissipation. Suitable optimization theory plays an effective role in the research. In this process, much attention has been paid to the decrease of pressure loss. Parabola and quick opening shapes are adopted to improve the shape of valve plug and a series of shapes with different angles are tested. The two best optimization models are selected and their results are analyzed. The results show good performance and the pressure loss coefficient reduces from 2.0% to 1.7%.

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