Benefit Evaluation of Water and Soil Conservation Measures in Shendong Based on Particle Swarm Optimization and the Analytic Hierarchy Process

Guo, Yangnan; Chen, Guoqing; Mo, Rigan; Wang, Meng; Bao, Yulong

doi:10.3390/w12071955

Cited by 17 publications

(9 citation statements)

References 75 publications

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Section: Searching Methods For Markers In Point Cloud Of Fmmfmentioning

confidence: 99%

“…Yujialiang coal mine covers an area of 56.33 km 2 , with geological reserves of 504 million tons and recoverable reserves of 355 million tons. The coal quality in the mine field is excellent, with the characteristics of ultra-low sulfur, ultra-low phosphorus, ultra-low ash, and high calorific value [49]. The length of 43101 mining face is 351.4 m, the advancing length is 1809.4 m, the thickness of the coal seam is 1.0~1.7 m, the average thickness is 1.5 m, the dip angle is 1~3°, the unit weight is 1.30 t/m 3 , and the mining height is 1.4 m [50].…”

Section: Searching Methods For Markers In Point Cloud Of Fmmfmentioning

confidence: 99%

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Processing Laser Point Cloud in Fully Mechanized Mining Face Based on DGCNN

Zhao

Guo

et al. 2021

IJGI

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Point cloud data can accurately and intuitively reflect the spatial relationship between the coal wall and underground fully mechanized mining equipment. However, the indirect method of point cloud feature extraction based on deep neural networks will lose some of the spatial information of the point cloud, while the direct method will lose some of the local information of the point cloud. Therefore, we propose the use of dynamic graph convolution neural network (DGCNN) to extract the geometric features of the sphere in the point cloud of the fully mechanized mining face (FMMF) in order to obtain the position of the sphere (marker) in the point cloud of the FMMF, thus providing a direct basis for the subsequent transformation of the FMMF coordinates to the national geodetic coordinates with the sphere as the intermediate medium. Firstly, we completed the production of a diversity sphere point cloud (training set) and an FMMF point cloud (test set). Secondly, we further improved the DGCNN to enhance the effect of extracting the geometric features of the sphere in the FMMF. Finally, we compared the effect of the improved DGCNN with that of PointNet and PointNet++. The results show the correctness and feasibility of using DGCNN to extract the geometric features of point clouds in the FMMF and provide a new method for the feature extraction of point clouds in the FMMF. At the same time, the results provide a direct early guarantee for analyzing the point cloud data of the FMMF under the national geodetic coordinate system in the future. This can provide an effective basis for the straightening and inclining adjustment of scraper conveyors, and it is of great significance for the transparent, unmanned, and intelligent mining of the FMMF.

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Section: Searching Methods For Markers In Point Cloud Of Fmmfmentioning

confidence: 99%

Section: Searching Methods For Markers In Point Cloud Of Fmmfmentioning

confidence: 99%

Processing Laser Point Cloud in Fully Mechanized Mining Face Based on DGCNN

Zhao

Guo

et al. 2021

IJGI

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“…Then, at level four, a single matrix is solved in which the solutions are compared as many times as there are factors at level three. To check the correctness of the matrix computation following the commonly used methodology, the value of the maximum eigen value (λ max ), and the Consistency Index (CI), Random Index (RI), Consistency Ratio (CR) were used [69][70][71]. The more an average deviates from the dimension of the n-weighted matrix, the greater the error is made.…”

Section: Methodsmentioning

confidence: 99%

AHP as a Useful Tool in the Assessment of the Technical Condition of Hydrotechnical Constructions

2021

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The key challenge for sustainable water management is to carry out a proper assessment of the technical condition of hydrotechnical constructions. Maintaining them in a good state is a prerequisite for ensuring the safety of objects, as well as adjacent areas. This paper compares the results of field research obtained by three methods to assess the technical condition of structures located on the Wełna River. The main objective is to determine the differences between the methods and to indicate the most important assessment elements and criteria. Moreover, it was checked if the Analytic Hierarchy Process (AHP) can be used to carry out the correct assessment of hydrotechnical construction. An assessment that will be based on the hierarchy of factors, which is not often used in other methods. The AHP was applied for the first time to assess the technical condition of hydrotechnical constructions. Based on AHP, three variants of different weights for factors, including exploitation problems and damage to construction elements, were selected. The new variants developed by the authors allow for a more accurate, multifactor assessment. The use of scales to determine the importance of individual elements contributes to the actual representation of the technical condition of the object, which is often over- or underestimated by other assessment methods. The analysis shows that the AHP method is a useful tool to support the assessment of the technical condition of hydrotechnical construction. The use of AHP as a universal assessment method will compare the technical condition of hydrotechnical constructions located all over the world.

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“…The entropy weight method is an objective weighting method based on the information provided by data. Therefore, by combining the AHP [74] and entropy weight method [75], the overall weight of each indicator is calculated (see Table 1). The weight determined by the AHP method and entropy weight method is…”

Section: Analytical Frameworkmentioning

confidence: 99%

Coordinated Development of Innovation System in China’s Yangtze River Economic Belt, a Demand and Supply Perspective

Zhang

Duan

2020

Sustainability

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The Development of the Yangtze River Economic Belt (YREB) is not only a major regional coordination development strategy in China but also a core carrier supporting China’s innovation-driven development. Under this background, this paper explored the evolution, spatial difference, and coordination development of the regional innovation system in the period of 2007 to 2017 from the demand and supply perspective. We found that, during the study period, the development level of the innovation demand subsystem (IDS) and innovation supply subsystem (ISS), as well as their coordinated development, all showed an increasing trend. The development gap of IDS and the coordinated development among cities in YREB was quite balanced, while there existed a large gap among cities in YREB in the development of ISS. The development of IDS was better than the development of ISS in most of the cities of YREB, indicating that the innovation development of cities in YREB needs supply-side structural reform urgently. Most cities in YREB were at the moderately or slightly uncoordinated development phase, and Shanghai was the only city with coordinated development between IDS and ISS. This paper enriches the regional innovation system from a new perspective, the demand and supply perspective, as well as providing suggestions for the coordinated development of the regional innovation system in YREB.

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Benefit Evaluation of Water and Soil Conservation Measures in Shendong Based on Particle Swarm Optimization and the Analytic Hierarchy Process

Cited by 17 publications

References 75 publications

Processing Laser Point Cloud in Fully Mechanized Mining Face Based on DGCNN

Processing Laser Point Cloud in Fully Mechanized Mining Face Based on DGCNN

AHP as a Useful Tool in the Assessment of the Technical Condition of Hydrotechnical Constructions

Coordinated Development of Innovation System in China’s Yangtze River Economic Belt, a Demand and Supply Perspective

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