scholarly journals Quality Index Evaluation Model of MPP Sold under the E-Commerce Platform

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Chen Li ◽  
Junjie Zeng ◽  
Xinfeng Jin ◽  
Wenwen Chu
Keyword(s):  
Index System ◽  
Quality Index ◽  
Evaluation Model ◽  
Principal Component ◽  
Quality And Safety ◽  
Index Method ◽  
Index Evaluation ◽  
The Index System ◽  
Comprehensive Index Method ◽  
Original Index

The paper was intended to address the deficiencies of quality and safety appraisement methods for mobile power pack (MPP) sold on e-commerce platforms. Based on the comprehensive index method, the quality index evaluation model of MPP under e-commerce platform was constructed by combining principal component analysis (PCA), cluster analysis, and analytic hierarchy process (AHP). The index system firstly analyzed the factors related to the quality and safety of MPP and determined the original index. Then, the original index was optimized by combining PCA and clustering analysis, and the index system of the index evaluation model was determined. Finally, the weights of various indexes were determined by AHP, to complete the quality index evaluation model for MPP sold under the e-commerce platform.

scholarly journals Research on Utility Evaluation of Grid Investment considering Risk Preference of Decision-Makers

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Hongliang Wu ◽  
Daoxin Peng ◽  
Ling Wang
Keyword(s):  
Index System ◽  
Evaluation Model ◽  
Risk Preference ◽  
System Optimization ◽  
Decision Makers ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Risk Appetite ◽  
Utility Evaluation ◽  
The Index System

Effectiveness evaluations are one of the important ways to guide grid investment and to improve investment efficiency. Improving the effectiveness of grid investment evaluations is studied based on the optimization of the investment evaluation index system and the utility evaluation model. The index system is optimized by establishing an evaluation index system of grid investment effectiveness, considering the redundancy between the indices, and constructing an ISM-DEA model. The utility function model was introduced to fully consider the different risk appetites of decision-makers, and a utility evaluation model that takes risk appetite into account was established. An improved weight integration model based on multiobjective optimization was established by considering the minimum deviation and the trend-optimal objective function when setting the index weights. The calculation results show that the feasibility of the index system optimization model and utility evaluation model constructed in this study is verified under the premise of satisfying the assumptions. By adjusting the risk preference coefficient of decision-makers, the dynamic optimization of the grid investment utility evaluation results can be realized.

scholarly journals Research on Liquor Storage Based on Statistical Analysis Model

2021 ◽  
Vol 5 (3) ◽  
Author(s):  
Xuhua Xu
Keyword(s):  
Index System ◽  
Comprehensive Evaluation ◽  
Principal Component ◽  
Evaluation Index System ◽  
Classification Model ◽  
Analysis Model ◽  
The Index System ◽  
Storage Methods ◽  
Physical And Chemical

According to the physical and chemical indexes of different periods, different storage containers and different storage sites, a two overall T test was used to show that there were significant differences in physical and chemical indexes of liquor body in different detection sites. Correlation analysis of wine storage in different storage methods by Spearman correlation coefficient. By using the principal component analysis method, the comprehensive evaluation index system of the quality of the wine body was constructed, and the classification model of the detection location based on the comprehensive evaluation was established by using the index system. The detection sites were classified, and the results showed that the detection sites were divided into four grades.

Manufacturing Evaluation Model Based on Multi-Attribute Making Engineering

2013 ◽  
Vol 340 ◽  
pp. 240-244
Author(s):  
Peng Ye ◽  
Zhong Wen Chen
Keyword(s):  
Decision Making ◽  
Index System ◽  
Evaluation Model ◽  
Scientific Research ◽  
Fuzzy Mathematics ◽  
Uncertain Information ◽  
Academic Reputation ◽  
Model Based ◽  
The Index System

In this paper, the problem of evaluating the key discipline level of university is studied. Firstly, the index system of evaluation is established, i.e., academic team, scientific research, talent training, and academic reputation. Then, an evaluation model of evaluating the key discipline is presented based on the theory of fuzzy mathematics and decision making. Therefore, a novel and effective way is given to solve the problem of evaluating the key discipline level of university under the uncertain information.

Reliability and Sensitivity Evaluation of the Station Bus Systems Configuration

2013 ◽  
Vol 391 ◽  
pp. 336-339
Author(s):  
Yi Gang Liu ◽  
Si Zhe Liao ◽  
Jun Hui Liang ◽  
Tong Zeng ◽  
Zhu Liu
Keyword(s):  
Index System ◽  
Correlation Matrix ◽  
Evaluation Model ◽  
Sensitivity Evaluation ◽  
Close Relationship ◽  
The Index System

The stations work has a close relationship with the reliability of station bus systems configuration, this paper established the index system of station bus systems configuration, discussed the components evaluation model, put forward the calculation based on correlation matrix, and analysis the sensitivity of the components, thus proposed the guiding suggestion to improve the reliability of station bus systems configuration. The example demonstrated the validity and practicability of the method.

scholarly journals Study on Evaluation Model of Emergency Rescue Capability of Chemical Accidents Based on PCA-BP

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Jianghong Liu ◽  
Junfeng Wu ◽  
Weisi Liu
Keyword(s):  
Neural Network ◽  
Emergency Management ◽  
Bp Neural Network ◽  
Index System ◽  
Evaluation Model ◽  
Principal Component ◽  
Assessment Model ◽  
Chemical Accidents ◽  
Emergency Rescue ◽  
Model Based

The emergency management of chemical accidents plays an important role in preventing the expansion of chemical accidents. In recent years, the evaluation and research of emergency management of chemical accidents has attracted the attention of many scholars. However, as an important part of emergency management, the professional rescue team of chemicals has few evaluation models for their capabilities. In this study, an emergency rescue capability assessment model based on the PCA-BP neural network is proposed. Firstly, the construction status of 11 emergency rescue teams for chemical accidents in Shanghai is analyzed, and an index system for evaluating the capabilities of emergency rescue teams for chemicals is established. Secondly, the principal component analysis (PCA) is used to perform dimension reduction and indicators’ weight acquisition on the original index system to achieve an effective evaluation of the capabilities of 11 rescue teams. Finally, the indicators after dimensionality reduction are used as the input neurons of the backpropagation (BP) neural network, the characteristic data of eight rescue teams are used as the training set, and the comprehensive scores of three rescue teams are used for verifying the generalization ability of the evaluation model. The result shows that the proposed evaluation model based on the PCA-BP neural network can effectively evaluate the rescue capability of the emergency rescue teams for chemical accidents and provide a new idea for emergency rescue capability assessment.

scholarly journals Assessment of Anwai river water quality using the weighted arithmetic water quality index (WQI) in Delta State, Nigeria

2021 ◽  
Vol 13 (3) ◽  
pp. 913-922
Author(s):  
Kate Isioma Iloba ◽  
Nelson Owese Akawo ◽  
Perry Irouoghene Godwin
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Oxygen Demand ◽  
Principal Component ◽  
Aquatic Organisms ◽  
Total Coliform ◽  
Total Hardness ◽  
Index Method ◽  
Weighted Arithmetic

The weighted arithmetic water quality index method was used to assess the water quality of anthropogenically-laden Anwai-river within the Asaba-capital territory of Delta State, Nigeria, in Stations 1(Otulu), 2(Isele- asagba) and 3(Anwai-Asaba) using pH, electrical conductivity (EC), total dissolved solids (TDS), biochemical oxygen demand (BOD), dissolved oxygen (DO), turbidity, phosphates, nitrates, total hardness (TH) and coliforms, to determine its water quality status and its suitability for humans and aquatic biota. Aside from TDS, turbidity, and TH, other parameters such as pH (5.3-8.2), DO (2.0-2.8 mg/L), BOD (1.02-2.4 mg/L), EC (110-113 µS/cm), turbidity(2.3-5.2 NTU), TDS (8.0-16.0 mg/L), TH (30-62 mg/L), phosphates (0.13-0.28 mg/L), nitrates (0.05-0.27 mg/L) and Coliform (25.75-45.5 cfu/ml) indicated non-significant variableness (p>0.05) between Stations. Water depth, TDS, turbidity, TH, phosphate, nitrate and total coliform were significant contributors to the Anwai-river's water quality by Principal component analysis (PCA). The first principal component (PC1) exhibited 94.1% variance and a 0.1860 loading factor, while the second showed 5.9% variance and 0.0117 loading factor implying depth, flooding, excessive human activities and sewage disposal as important contaminants. Although the individual physiochemical-based water qualities were below the WHO recommended drinking water values translated into poor water quality by the weighted arithmetic water quality index at the three Stations; 86.83, 75.02 and 81.27 in Station's 1, 2 and 3 respectively, correspondingly poor to very poor based on Water quality index. The water of Anwai-river is a serious health threat to humans and aquatic organisms and thus, it should not be utilized untreated.

Research on Manufacturing Engineering with Evaluation Model of Ship Manufacturing Suppliers Based on the Combinational Weigh

2014 ◽  
Vol 540 ◽  
pp. 528-531
Author(s):  
Jing Yang ◽  
Peng Di ◽  
Bin Hu
Keyword(s):  
Index System ◽  
Evaluation Model ◽  
Qualitative And Quantitative ◽  
The Index System ◽  
Manufacturing Engineering

Aiming at the problem of no special ship supplier appraisement model now,the factor that affects the option of supplier have been analyzed. On the foundation of building the index system of appraising the suppliers,the model of appraising the suppliers was established based on the improved TOPSIS,utilizing the method of combining the subjective and objective、the qualitative and quantitative. Finally the feasibility and validity of the model were verified through the calculating example. The result have solved the problem that objectivity of appraising the suppliers is below.

Electricity Competitiveness Evaluation Research Based on Principal Component Analysis

2014 ◽  
Vol 960-961 ◽  
pp. 1467-1472
Author(s):  
Dong Xiao Niu ◽  
Qiong Wang ◽  
Peng Wang ◽  
Shu Yi Zhou ◽  
Wei Dong Liu ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Evaluation Method ◽  
Evaluation Research ◽  
Correlation Method ◽  
Principal Component ◽  
Component Analysis ◽  
Evaluation Index System ◽  
Index Method ◽  
Comprehensive Index ◽  
Comprehensive Index Method

This paper constructs the evaluation index system of electricity competitiveness in terminal energy consumption, evaluates the electricity competitiveness in Ningxia region from 2005 to 2011 using principal component analysis (PCA), and compares the evaluation results of PCA, the linear weighted method, the comprehensive index method and TOPSIS-grey correlation method. The compatibility degree and difference degree of each method are analyzed and calculated to verify the applicability of the PCA. The results show that PCA is the most scientific and appropriate evaluation method.

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