Multi-objective evaluation model for aviation ammunition maintenance quality

2011 ◽  
Author(s):  
Gang Xu ◽  
Rubo Geng ◽  
Mingcong Ma
Keyword(s):  
Evaluation Model ◽  
Objective Evaluation ◽  
Multi Objective

Toolpath Patterns and Their Evaluation Methods in NC Machining

1996 ◽  
Author(s):  
Xinnong You ◽  
Youping Chen ◽  
Zude Zhou ◽  
Zhengcheng Duan
Keyword(s):  
Convex Polygon ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Evaluation Methods ◽  
Nc Machining ◽  
Sculptured Surfaces ◽  
Qualitative And Quantitative ◽  
Multi Objective

Abstract In this paper, various kinds of toolpath patterns are summarized and analyzed systematically for flat convex polygon, pocket with islands and sculptured surfaces. On this basis, the evaluation objectives of toolpath patterns are put forward, and a related fuzzy multi-objective evaluation model is presented to solve the problem of the assessment of alternatives with qualitative and quantitative criteria. At the end, an example of three toolpath patterns for the NC machining of a washer-wave-wheel is given to derive an optimal sorting sequence of them.

scholarly journals Multi-Objective Evaluation Model of Single-Lane Roundabouts

2021 ◽  
pp. 036119812110114
Author(s):  
Hend Ahmed ◽  
Said M. Easa
Keyword(s):  
Environmental Sustainability ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Design Guidelines ◽  
Geometric Design ◽  
Specific Power ◽  
Design Elements ◽  
Multi Objective ◽  
Proposed Model ◽  
Comparison Results

Mobility, safety, and environmental sustainability are priorities in the geometric design of roundabouts. This paper presents a multi-objective optimization model that determines the geometric design elements of single-lane roundabouts using all three objectives. The user can specify weights for the objectives, or the model can determine the optimal weights. Mobility is defined in terms of roundabout delay and modeled using the United Kingdom empirical model. Safety is modeled in terms of collision frequency based on the methodology of the Highway Safety Manual. Environmental sustainability is represented by vehicle emissions (nitrogen oxides, hydrocarbons, carbon dioxide, and carbon monoxide) and is modeled using the vehicle-specific power methodology. The proposed model directly identifies the optimal geometric dimensions (decision variables) of the roundabout, including entry width, exit width, approach half-width, circulatory width, effective flare length, entry radius, entry angle, and inscribed circle diameter. The input data to the model include traffic data, site conditions, and limitations based on design guidelines. Application of the proposed model is illustrated using two actual roundabouts. The comparison results show that the proposed model provides substantial improvements in safety, mobility, and environmental sustainability compared with existing conditions. In addition, the model requires much less effort to apply compared with the traditional iterative method, and as such should be of interest to highway designers.

A FUZZY MULTI-OBJECTIVE EVALUATION MODEL IN SUPPLY CHAIN MANAGEMENT

2006 ◽  
Author(s):  
XIAOBEI LIANG ◽  
XINGHUA LIU ◽  
DAOLI ZHU ◽  
BINGYONG TANG ◽  
HONGWU ZHUANG
Keyword(s):  
Supply Chain ◽  
Supply Chain Management ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Chain Management ◽  
Multi Objective

scholarly journals A multi-objective evaluation method based on connection numbers theory of hazardous chemical accidents emergency medical rescue capability

2019 ◽  
Vol 27 (3) ◽  
pp. 125-133
Author(s):  
Yapeng Wang ◽  
Jinguo Zhang ◽  
Yundou Wang ◽  
Xiaowen Xiong ◽  
Xin Zhao
Keyword(s):  
Index System ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Chemical Accidents ◽  
Hazardous Chemical ◽  
Emergency Medical ◽  
Partial Connection

Background: An objective, comprehensive and scientific evaluation of emergency medical rescue capability (EMRC) is of great realistic significance in assisting the health administrative department to grasp the overall response capability of all emergency medical rescue teams, enabling each team to have a full understanding of its own strengths and weakness and improve itself accordingly. At present, the research on the evaluation of EMRC in Hazardous Chemicals Accidents (HCA) is not systematic and in-depth, and the existing research results also have some shortcomings, such as, the lack of strong theoretical support for the evaluation index system, the relatively single function of evaluation methods, and so on. Objectives: The objective of this article is to research the evaluation index system and a new evaluation method of EMRC in HCA to overcome the above shortcomings. Methods: It establishes an emergency medical rescue capability model by employing the competency model and then constructs the evaluation index system on the basis of the analysis of all the factors of emergency medical rescue capability in hazardous chemical accidents and sets up an evaluation model based on the theory of connection numbers and partial connection numbers. It determines the competence ranking of several emergency medical rescue teams and the competence state of an individual emergency medical rescue team by calculating the connection principal value, and it also predicts how the emergency medical rescue capability will develop based on the values of partial connection numbers. Results: The example shows that the calculation process of this model is relatively simple, and its assessment results are objective and authentic, and moreover, its multi-functions can make up for the deficiency of the simplified function of other evaluation models. Conclusion: This method is scientific and rational to some extent and can provide reference for evaluation problems of the same kind.

A Spectral Optimization Algorithm for Multi-Objective Prototype Selection

1995 ◽  
Author(s):  
Andy Dong ◽  
Alice M. Agogino
Keyword(s):  
Optimization Algorithm ◽  
Parametric Design ◽  
Selection Process ◽  
Objective Evaluation ◽  
Design Synthesis ◽  
Multi Objective ◽  
Trade Offs ◽  
Spectral Optimization ◽  
The Right ◽  
Selection Of

Abstract In design synthesis, engineering prototypes make an ideal representation medium for preliminary designs. Unlike parametric design wherein a pre-specified design is parametrically varied, design synthesis demands artistic creativity and engineering experience to transform the previously known components, relationships and designs into a new form. The process compels the designer to ascertain which prototypes will, in some sense, best satisfy the design task. The challenge in this assignment lies in selecting the “right” design prototype. This selection process typically entails an objective evaluation of different designs that perform the same functions or have similar intended behavior and comparing trade-offs between alternate designs. This paper introduces a multi-objective spectral optimization algorithm for the selection of design prototypes based upon their functional representations. The optimization algorithm returns an index of rank, scoring the functional similarity of the proposed design to the goal design. Two illustrative examples apply the algorithm to the selection of a heat fin and beam.

scholarly journals Research on the Evaluation Model of a Smart Grid Development Level Based on Differentiation of Development Demand

2018 ◽  
Vol 10 (11) ◽  
pp. 4047 ◽  
Author(s):  
Jinchao Li ◽  
Tianzhi Li ◽  
Liu Han
Keyword(s):  
Smart Grid ◽  
Smart Grids ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Entropy Method ◽  
Base Layer ◽  
Regional Differentiation ◽  
Base Level ◽  
Development Level ◽  
The Impact

In order to eliminate the impact of inter-regional differentiation of development demand on the objective evaluation of the development level of smart grid, this paper establishes the evaluation model of weight modification, transmission mechanism and combination of subjective and objective weights. Firstly, the Analytic Hierarchy Process method is used to calculate the weights of evaluation indices of effect layer and then the indices of development demand are used to modify the weights of them. The association analysis and the correlation coefficient are used to establish the weights conduction coefficient between the effect level and the base level. Then the subjective weights of the indices of the base layer are calculated. The objective weights of the indices of the base layer are obtained by using the entropy method. The subjective weights of the base layer and the objective weights obtained by the entropy method are averagely calculated, and the comprehensive weights of the evaluation indices of the base layer are obtained. Then each index is scored according to the weights and index values. Finally, the model is used to quantitatively inspect the level of development of smart grid in specific regions and make a horizontal comparison, which provides a useful reference for the development of smart grids. The relevant examples verify the correctness and validity of the model.

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