Application of the arctangent function model in the prediction of ground mining subsidence deformation: a case study from Fushun City, Liaoning Province, China

2016 ◽  
Vol 76 (4) ◽  
pp. 1383-1398 ◽  
Author(s):  
Lei Nie ◽  
Hongfei Wang ◽  
Yan Xu
Keyword(s):  
Mining Subsidence ◽  
Liaoning Province ◽  
Function Model ◽  
Arctangent Function

An integrated TRIZ approach for technological process and product innovation

2015 ◽  
Vol 231 (6) ◽  
pp. 1062-1077 ◽  
Author(s):  
Miao Li ◽  
Xinguo Ming ◽  
Maokuan Zheng ◽  
Lina He ◽  
Zhitao Xu
Keyword(s):  
Problem Solving ◽  
Technological Process ◽  
Manufacturing Process ◽  
Product Innovation ◽  
Interaction Matrix ◽  
Function Model ◽  
Manufacturing Defects ◽  
Root Cause ◽  
Innovative Solution

Process trimming (also can be called as trimming for process) helps to trim and eliminate process operations by redistributing their functions among other operations. It offers one way to eliminate key disadvantages in product and manufacturing process that other methods do not see. However, few methods have been disclosed in a structured way for process trimming effectively. Therefore, this article proposes an integrated process focused on technological process and product innovation to solve the key problems with process trimming-based TRIZ (theory of inventive problem-solving) approach. This method helps to identify and inventively solve the key problems and maximize use resource of system and supersystem. First, process trimming candidates are identified based on component function model, component trimming rules, process function model analysis, component–process interaction matrix, and root cause analysis. Then, three types of process trimming strategies are presented. Algorithm of process trimming is developed to identify key problems in technological process. TRIZ problem-solving tools are used to solve these key problems. Finally, a case study of refrigerator door foam innovative design and manufacturing process is investigated to test the efficiency of the approach. The innovative solution significantly decreases manufacturing defects and service cost.

scholarly journals Study on the coupling relationship between urban resilience and urbanization quality—A case study of 14 cities of Liaoning Province in China

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0244024
Author(s):  
Yanpeng Gao ◽  
Wenjun Chen
Keyword(s):  
Relative Length ◽  
Liaoning Province ◽  
Average Score ◽  
Urban Resilience ◽  
Coupling Relationship ◽  
Time Path ◽  
The North ◽  
Coordination Degree

In this paper, entropy, coupling coordination degree, spatial auto-analysis, LISA time path, and other methods have been used to analyze the coupling coordination degree of urban resilience and urbanization quality of 14 cities in Liaoning Province from 2009 to 2019. The results show that: 1. The number of highly resilient cities accounts for 14.3% of the total number of cities in Liaoning Province, and the overall resilience degree is low; the spatial distribution shrinks along the Shenyang–Dalian Economic Belt toward both sides, with obvious “core-margin” characteristics. 2. The average score of urbanization quality increased from 0.0574 to 0.0966, showing a fluctuating upward trend; the regional difference was significant, and the “dual-core” characteristic was prominent. 3. During the study period, the 14 cities of Liaoning Province were in a state of imbalance, and there was a positive correlation between the coupling degree and the coordination degree. Moran’s I decreased from 0.237 to 0.220 and the spatial agglomeration characteristics also weakened. Further analysis of the spatial and temporal linkage characteristics of the coupling relationship shows that the relative length of LISA time path presents characteristics of protrusion in the central region and shrinkage on the East and West sides, and the curvature presents characteristics that are smaller in the North and larger in the South.

Visualisation of the characteristics of mining subsidence with the consideration of topography: a case study in China

2011 ◽  
Vol 3 (1) ◽  
pp. 16 ◽  
Author(s):  
Wu Xiao ◽  
Zhenqi Hu ◽  
Bikai Gong ◽  
Pingping Zhang ◽  
Bo Han
Keyword(s):  
Mining Subsidence
Sign in / Sign up

Export Citation Format

Share Document