A Trust-Based Method in Construction Industry

2014 ◽  
Vol 539 ◽  
pp. 762-768
Author(s):  
Jing Xu ◽  
Yan Xin Liu ◽  
Lan Fang Luo
Keyword(s):  
Correlation Analysis ◽  
Construction Industry ◽  
Trust Building ◽  
Contractor Selection ◽  
Gray Correlation Degree ◽  
Correlation Degree ◽  
Gray Correlation ◽  
Construction Contractor ◽  
Gray Correlation Analysis ◽  
Criteria For Evaluation

This paper presents a method for construction contractor selection based on trust building. By classifying criteria into three types of trust and applying gray correlation analysis, the presented method concerns multi-criteria for evaluation other than price, selects trust-and selection-related criteria, provides approaches for indicator quantification and determines the contractor on the basis of gray correlation degree.

scholarly journals Gray Correlation Analysis and Prediction on Permanent Deformation of Subgrade Filled with Construction and Demolition Materials

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3035 ◽  
Author(s):  
Junhui Zhang ◽  
Anshun Zhang ◽  
Jue Li ◽  
Feng Li ◽  
Junhui Peng
Keyword(s):  
Correlation Analysis ◽  
Permanent Deformation ◽  
Confining Pressure ◽  
Gray Correlation Degree ◽  
Correlation Degree ◽  
Gray Correlation ◽  
Confining Pressures ◽  
Gray Correlation Analysis ◽  
Plastic Shakedown ◽  
Different Response

Construction and demolition (C&D) materials obtained from the demolition of buildings are proven to be qualified and sustainable subgrade fillers. The permanent deformation response of subgrade C&D materials under different moisture contents, degrees of compaction, deviator stresses, and confining pressures was revealed by carrying out dynamic triaxial texts. Then, using a four-factor and three-level orthogonal test and by calculating the Gray correlation degree of each factor, the influence degree of each factor on the permanent deformation was determined. The results indicated that two different response types of the permanent deformation of subgrade C&D materials, plastic shakedown and plastic creep, were identified as reason behind the increase in stress levels. Also, according to the Gray correlation analysis results, the permanent deformation of highway subgrade filled with C&D materials is influenced by the deviator stress most significantly, followed by moisture content, degree of compaction, and confining pressure. Finally, a permanent deformation prediction model about this kind of subgrade filler with a reasonable prediction accuracy was proposed.

Application of Improved Gray Correlation Analysis Model to the Estimation of Country Rock Stability

2012 ◽  
Vol 594-597 ◽  
pp. 28-32
Author(s):  
Jin Sheng Lei ◽  
Lei Bao ◽  
Liang Wen ◽  
Jian Fei Chen
Keyword(s):  
Correlation Analysis ◽  
Country Rock ◽  
Quality Standard ◽  
Analysis Model ◽  
Underground Engineering ◽  
Surface Strength ◽  
Rock Stability ◽  
Correlation Degree ◽  
Gray Correlation ◽  
Gray Correlation Analysis

The estimation of country rock stability in underground engineering is the important basis for carrying out engineering design and formulating corresponding engineering measures. The interval form of quality standard, the value of resolution coefficient ρ and the weight of correlation degree are seldom takend consideration by the traditional gray correlation analysis model, an improved gray correlation analysis model is used to analyze the five indices of influencing the country rock stability: rock quality designation RQD, moisture compressive strength Rw, integrity coefficient Kv, structure surface strength coefficient Kf, groundwater seepage measurement W/L. The results show that the improved correlation analysis model is superior in its objectivity and applicability as well as certain practical value in evaluating country rock stability or other evaluation problems.

Spatial Load Forecasting Based on Load Forecasting Reliability

2014 ◽  
Vol 672-674 ◽  
pp. 1075-1080 ◽  
Author(s):  
Bai Xiao ◽  
Hao Wang ◽  
Gang Mu
Keyword(s):  
Power Supply ◽  
Load Forecasting ◽  
Forecasting Error ◽  
Comprehensive Index ◽  
Gray Correlation Degree ◽  
Analysis Theory ◽  
Correlation Degree ◽  
Forecasting Method ◽  
Gray Correlation

A spatial load forecasting method based on reliability of load forecasting is proposed. It calculates the correlation of wave comprehensive index, variance, maximum predictable ability of each power supply small area’s historical load data by using the analysis theory of grey degree based on the analysis of load forecasting error last target year. The weight of each factor effected on prediction outcomes according to the gray correlation degree is determined, then the load forecasting reliability model of each power supply area is constructed. Finally, by using the adjustment role of load forecasting reliability, the load of target year is forecasted. Actual example shows that the spatial load forecasting method based on reliability of load forecasting is correct and effective.

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