Highway Tunnel Ventilation Technology Energy-Saving Assessment Based on Matter-Element Model

2013 ◽  
Vol 779-780 ◽  
pp. 611-614 ◽  
Author(s):  
Cheng Zan Chu ◽  
Chuan Zheng Zhu ◽  
Yao Wang
Keyword(s):  
Energy Saving ◽  
New Technology ◽  
Element Model ◽  
Objective Evaluation ◽  
Evaluation Index System ◽  
Three Dimensions ◽  
Tunnel Ventilation ◽  
Highway Tunnel ◽  
Saving Effect ◽  
Matter Element Model

In recent years, with the rapid increase of tunnel percentage in Midwestern highway construction, the tunnel operation cost rise quickly. In the cost, energy consumption of tunnel ventilation and illumination occupies a great proportion. In order to realize energy-saving and emission-reduction, there have been some new ventilation technology, for instance, the improved ventilation device, the improved ventilation method, and some new ventilation control technology. However after some new technology was applied, the phenomenon of energy-saving but not money-saving appeared. For the scientific and objective evaluation of highway tunnel ventilation technology energy-saving effect, construct evaluation index system from the three dimensions of technology usability, economy, and application effect, and then evaluate the energy-saving effect based on matter-element model. The result of assessment will give decision support for the later selection of highway tunnel ventilation technology proposal.

The Research and Application of Masonry Structure Reliability Rating Method Based on Extenics

2013 ◽  
Vol 291-294 ◽  
pp. 1029-1038
Author(s):  
Ming Liu ◽  
Bao Feng Song ◽  
Daniel Dias ◽  
Jing Pan
Keyword(s):  
Structural Reliability ◽  
Comprehensive Evaluation ◽  
Element Model ◽  
Assessment Method ◽  
Masonry Structure ◽  
Evaluation Index System ◽  
Structure Reliability ◽  
Rating Method ◽  
Matter Element Model ◽  
Correlation Factors

Aiming at masonry structure housing, establish the structure reliability evaluation index system. Subsidiary factors index dimensionless processing, the traditional matter-element model is analyzed, and based on this, the article puts forward an improved correlation functions, establish correlation function of the correlation factors of the index layer. Consider the weight coefficients of members,gave the extension index,combining analysis of the structural member reliability and extension comprehensive evaluation of the integral structural reliability, establish the masonry structure housing reliability assessment method framework. And prove the feasibility of this method through engineering examples.

Environmental Impact Analysis of Water Environment in Coal Mining Areas Based on Matter-Element Model

2010 ◽  
Vol 108-111 ◽  
pp. 403-408 ◽  
Author(s):  
Qi Liang Wang ◽  
Lei Wang
Keyword(s):  
Coal Mining ◽  
Large Scale ◽  
Impact Analysis ◽  
Water Environment ◽  
Element Model ◽  
Evaluation Index System ◽  
Assessment Model ◽  
Environment Impact ◽  
Mining Areas ◽  
Matter Element Model

In connection with the problems that coal mining accounts for water environment pollution and socio-economic development, the main factors was analyzed. From water environment system, ecological system and socio-economic system, corresponding evaluation index system was perfected and became fit for factual situation. Matter-element model of water environment impact evaluation was constructed and used to evaluate four large-scale coal mining areas. The results showed that assessment model in accordance with the objective reality. Compared with other evaluation models, matter-element model is more accurate and comprehensive. By matlab, a calculating program was made and can be dynamically amended.

Using Fuzzy Matter-Element Model and Triangular Fuzzy AHP Method to Select the International Construction Project Material Suppliers

2013 ◽  
Vol 357-360 ◽  
pp. 2277-2281 ◽  
Author(s):  
Jun Guan ◽  
Zhi Hui Zhang ◽  
Yong Wu
Keyword(s):  
Comprehensive Evaluation ◽  
Fuzzy Ahp ◽  
Construction Project ◽  
Element Model ◽  
Triangular Fuzzy Number ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
International Construction ◽  
Matter Element Model ◽  
Selection Of

Selection of material supplier is important to international construction project management, and can bring impacts on the project's quality, schedule and cost. Considering the features of international construction projects, we built a selection decision-making evaluation index system. Triangular fuzzy AHP (Analysis of Hierarchy Process) method was used to calculate the weights of evaluation index. Using the medium value of triangular fuzzy number, a simple and convenient method was developed to test the consistency of judgment matrix. Base on calculating the weights of evaluation index, a fuzzy matter-element model was proposed to calculate the comprehensive evaluation values. Taking the selection of cement suppliers of the Congo (Brazzaville) National Road One Second Project as an example, the Euclid closeness of alternative suppliers was calculated to determine the ranking order of alternatives.

Research on Influencing Factors of Magnesium Alloy Wheels Forging Forming Force

2013 ◽  
Vol 456 ◽  
pp. 65-68 ◽  
Author(s):  
Jian Li ◽  
Hui Xue Sun ◽  
Shao Ming Sun ◽  
Xin Xin Liu
Keyword(s):  
Magnesium Alloy ◽  
Energy Saving ◽  
New Technology ◽  
Fem Analysis ◽  
Bench Test ◽  
Key Factors ◽  
Forming Force ◽  
Laboratory Bench ◽  
Saving Effect ◽  
Material Temperature

For magnesium alloy wheels have the advantages of light weight, remarkable energy saving effect, this article establishes a new technology of magnesium alloy wheels forging, and forging process is simulated through the use of FEM software. Investigate the effect of several key factors on the forming force. The results show that forming force increases with the die and material temperature reduces. and with the increase of Friction Coefficient, FEM analysis results provide guidance for the actual production.The energy consumption test shows that compared with aluminum alloy energy saving rate of road and laboratory bench test of magnesium alloy wheels respectively is 11 percent and 15.4 percent. Energy saving effect is remarkable.

scholarly journals Study on Vulnerability and Coordination of Water-Energy-Food System in Northwest China

2018 ◽  
Vol 10 (10) ◽  
pp. 3712 ◽  
Author(s):  
Junfei Chen ◽  
Xiaoya Yu ◽  
Lei Qiu ◽  
Menghua Deng ◽  
Ran Dong
Keyword(s):  
Food System ◽  
Coupled Model ◽  
Element Model ◽  
Northwest China ◽  
Vulnerability Index ◽  
Evaluation Index System ◽  
Countermeasures And Suggestions ◽  
Matter Element Model ◽  
Coordination Degree ◽  
F System

Water, energy and food are the basic resources for human survival and development. The coordination development of water-energy-food (W-E-F) is of great significance to promote regional sustainable development. In this study, Northwest China (Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang) was selected as the research case, and an evaluation index system was constructed to assess the vulnerability and coordination of water-energy-food (W-E-F) system based on PSR model. Then, a coupled model based on cloud-matter element model and coordination degree model was proposed. The cloud-matter element model was adopted to evaluate the vulnerability level of W-E-F system. The coordination degree model was employed to calculate the coordination degrees of W-E-F system. The results showed that, from 2006 to 2015, the vulnerability levels of W-E-F system in Northwest China were mostly at Level 1. The coordination degrees of W-E-F system belonged to the transitional development level (II) in most years. The vulnerability and coordination problems of W-E-F system in Northwest China were severe. The comprehensive vulnerability index values of W-E-F system were generally on the rise, but far from reaching a good level. Moreover, the comprehensive vulnerability index values and coordination degrees of W-E-F system in Northwest China do not match well. Finally, the countermeasures and suggestions to improve the coordinated development of water resource, energy and food in Northwest China were put forward.

The Fuzzy Evaluation of Power Listed Companies’ Credit Risk Based on Entropy Weight

2010 ◽  
Vol 439-440 ◽  
pp. 104-108
Author(s):  
Xi Ping Wang ◽  
Li Ying Yan
Keyword(s):  
Credit Risk ◽  
Element Model ◽  
Listed Companies ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Fuzzy Evaluation ◽  
Entropy Weight ◽  
Calculation Results ◽  
Entropy Weight Method ◽  
Matter Element Model

An entropy fuzzy matter-element model is combined, based on the establishment of credit risk evaluation index system of the power listed companies. The model uses entropy weight method to determine the weight of evaluation index, which has strong objectivity. The calculation results show that this model is scientific and practical.

scholarly journals Research on Evaluation and Mechanism of Power Grid Reserve Project Based on Matter Element Model

2021 ◽  
Vol 257 ◽  
pp. 02002
Author(s):  
Jun Yan ◽  
Yuheng Sha ◽  
Tiezheng Wang ◽  
Yanlai Zhang ◽  
Ziwei Zhu ◽  
...  
Keyword(s):  
Project Management ◽  
Evaluation Method ◽  
Power Grid ◽  
Influence Factors ◽  
Element Model ◽  
Evaluation Index System ◽  
The Sustainable Development ◽  
Research On Evaluation ◽  
Index Weight ◽  
Matter Element Model

In view of the increasing number of power grid reserve projects, how to reasonably evaluate power grid reserve projects and formulate power grid reserve project management mechanisms is of great significance for improving project management levels, optimizing resource allocation, and realizing the sustainable development of power grid enterprises. This paper proposes an evaluation method for power grid reserve projects based on the matter-element model. First, considering the influence factors of technology, economy, environment, etc., this paper constructs an evaluation index system for reserve projects considering policy, safety, and benefits; The method of weighting determines the index weight, and evaluates the project in combination with the matter-element model, laying a foundation for the research of the project reserve mechanism, and finally uses examples to verify the effectiveness of the method.

scholarly journals Research on grade evaluation of green urbanization based on cloud matter element model

2018 ◽  
Vol 53 ◽  
pp. 04052
Author(s):  
Wei Jia ◽  
Bing Liu ◽  
Wei Ding ◽  
Hui Li
Keyword(s):  
Transition Period ◽  
Cloud Model ◽  
Material Model ◽  
Element Model ◽  
Evaluation Index System ◽  
Theoretical Research ◽  
Healthy Development ◽  
Green Development ◽  
Urbanization Development ◽  
Matter Element Model

In the important transition period of urbanization development in China, the concept of “green development” was integrated into the current urbanization research. This paper constructs the grade evaluation index system from six dimensions: population employment, economic development, urban construction, residents' life, social development and ecological development, and combines the cloud model with the matter element model to construct the green urbanization cloud element material model. We took Shandong Province as an example and evaluated the current level of green urbanization in 17 cities by using this model. The results showed that the green urbanization levels of the four cities such as Ji'nan and Qingdao are the highest; the green urbanization levels of the nine cities such as Zibo and Weifang are good; the green urbanization levels of the four cities such as Zaozhuang and Heze are low. Through analysis, the evaluation results of the green urbanization cloud element matter model are objective and accurate, which verifies the rationality of using this model to evaluate the level of green urbanization, and improved the theoretical research of the current green urbanization. In practice, we can provide scientific guidance for the future development of green urbanization in cities to promote the healthy development of China's green urbanization.

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