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Research on the optimal selection model of rockfill dam type and evaluation method
Chen Yongxing,Chang Haotian,Lu Wenyan and Ren Bingyu
Strategic Study of CAE 2013, Volume 15, Issue 4, Pages 96-101
Keywords： rockfill dam AHP method Entropy method TOPSIS method optimal selection of dam type
A Full-Scale Optimization of a Crop Spatial Planting Structure and Its Associated Effects Article
Qi Liu, Jun Niu, Taisheng Du, Shaozhong Kang
Engineering 2023, Volume 28, Issue 9, Pages 139-152 doi: 10.1016/j.eng.2023.03.012
Keywords： evaluation index system Water footprint SWAT-WF module Interprovincial food trade Entropy weight TOPSIS
TODIM and TOPSIS with Z-numbers None
Renato A. KROHLING, André G. C. PACHECO, Guilherme A. dos SANTOS
Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 2, Pages 283-291 doi: 10.1631/FITEE.1700434
Keywords： Multi-criteria decision-making TODIM TOPSIS Fuzzy number Z-number
Comprehensive evaluation factor of optoelectronic properties for transparent conductive metallic mesh films Research Articles
Yilei Zhang, Jinxuan Cao, Zhengang Lu, Heyan Wang, Jiubin Tan,luzhengang@hit.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 11, Pages 1532-1540 doi: 10.1631/FITEE.2000690
Keywords： 金属网栅；TOPSIS法；熵权法；综合评价因子；透明导电膜
Ranking of design scenarios of TMD for seismically excited structures using TOPSIS
Sadegh ETEDALI
Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6, Pages 1372-1386 doi: 10.1007/s11709-020-0671-y
Keywords： seismic-excited building TMD optimum design PSO design scenario TOPSIS
Lizzette Pérez LESPIER, Suzanna LONG, Tom SHOBERG, Steven CORNS
Frontiers of Engineering Management 2019, Volume 6, Issue 3, Pages 368-383 doi: 10.1007/s42524-019-0004-9
Keywords： maritime transportation system environmental impact indicators fuzzy analytic hierarchy process fuzzy TOPSIS
Jishan He
Engineering 2018, Volume 4, Issue 5, Pages 667-675 doi: 10.1016/j.eng.2018.09.006
The Anjialing No. 1 Coal Mine in Shanxi Province, China, contains a complicated old goaf and an unknown water distribution that hold high potential for serious water hazards. Due to poor detection resolution, previous attempts have failed to determine the scope of the old goaf and the water distribution in the mine by separate use of various exploration methods such as seismic method, direct current resistivity, audio magnetotellurics, controlled-source audio-frequency magnetotellurics, and transient electromagnetics. To solve this difficult problem, a combination of the wide-field electromagnetic method and the flow field fitting method with three-dimensional resistivity data inversion was applied to determine the precise scope of the goaf and the locations where water is present, and to identify the hydraulic connection between the water layers so as to provide reliable technical support for safe coal production. Reasonable results were achieved, with all these goals being met. As a result, a mining area of nearly 4 km2 has been released for operation.
Keywords： Wide-field electromagnetic method Flow field fitting method Goaf Water abundance High-resolution exploration
The split installation and application of offshore wind turbine generator systems
Sun Guangxi,Huang Yaxin
Strategic Study of CAE 2010, Volume 12, Issue 11, Pages 53-59
The installation methods used in offshore wind farm around the world were summarized, and the process of split installation, the set necessity and principles of assembly base were analyzed. 8 kinds of typical land-based assembly programs and the assembly technology of main parts were summarized. An installation method was proposed by sitting of the diving boat. The diving installation ship was made by installing a crane, and was located in the seabed during the operation to hoist the turbine components. The installation method is suitable for offshore wind farm construction. The application of the installation method in the test turbine project of Jiangsu Xiangshui offshore wind farm was introduced in the paper finally.
Keywords： offshore wind farm method of assembled on shore method of split installation application
Tang Guorong,Liu Zhaowei,Li Jianhua
Strategic Study of CAE 2010, Volume 12, Issue 12, Pages 98-102
The CRD(cross diaphragm) and hole pile method were adopted in the large section tunnel,aiming at poor geological stability, complex engineering environment and the higher control requirements of subsidence in water-rich sandy gravel stratum of Beijing,which controlled the deformation of engineering structure,surrounding buildings along and underground pipeline effectively and ensured the safety of surrounding environment.
Keywords： sandy gravel stratum large section CRD method hole pile tunnel construction
The application of advanced threshold denoising tothe MMW target radiation signal
Fan Qinghui,Li Xingguo
Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 153-157
In this paper based on the characteristics of millimeter wave radiation signal for wavelet transform, non-negative wavelet coefficient is used as the wavelet coefficient of the signal. For a given threshold value, the wavelet coefficient which is smaller than the threshold is set zero and the wavelet coefficient which is larger than the threshold is set the difference between the coefficient and a constant a.The method for valuing a is inferred by the variance function of signal, and the experiments show that it has good ability of removing the noise in MMW target radiation signal.
Keywords： The application of advanced threshold denoising tothe MMW target radiation signal
Zhong Benhe
Strategic Study of CAE 2004, Volume 6, Issue 6, Pages 22-25
The production of ammonium phosphate by “ammoniated slurry concentrating process”（ASCP) developed by Sichuan University etc. has solved the difficulty that China´s low grade phosphorus ore is not suitable for the imported “phosphoric acid concentrating process”(PACP). 87 plants employing ASCP have been built with a total capacity of 2.79×106 t/a, which is 60% of the total ammonium phosphate production in China. Recently, a technique for ammonium phosphate production combining both ASCP and the imported PACP has been developed and put into operation in Wengfu of Guizhou Province. The new process with independent property right has been adopted in the five updating projects of phosphate fertilizer in China.
Keywords： phosphate fertilizer ammonium phosphate ammonium phosphate by ASCP
Ruochen Jiang, Feng Dai, Yi Liu, Ang Li
Engineering 2021, Volume 7, Issue 7, Pages 1023-1034 doi: 10.1016/j.eng.2020.10.019
Microseismic (MS) event locations are vital aspect of MS monitoring technology used to delineate the damage zone inside the surrounding rock mass. However, complex geological conditions can impose significantly adverse effects on the final location results. To achieve a high-accuracy location in a complex cavern-containing structure, this study develops an MS location method using the fast marching method (FMM) with a second-order difference approach (FMM2). Based on the established velocity model with three-dimensional (3D) discrete grids, the realization of the MS location can be achieved by searching the minimum residual between the theoretical and actual first arrival times. Moreover, based on the calculation results of FMM2, the propagation paths from the MS sources to MS sensors can be obtained using the linear interpolation approach and the Runge–Kutta method. These methods were validated through a series of numerical experiments. In addition, our proposed method was applied to locate the recorded blasting and MS events that occurred during the excavation period of the underground caverns at the Houziyan hydropower station. The location results of the blasting activities show that our method can effectively reduce the location error compared with the results based on the uniform velocity model. Furthermore, the obtained MS location was verified through the occurrence of shotcrete fractures and spalling, and the monitoring results of the in-situ multipoint extensometer. Our proposed method can offer a more accurate rock fracture location and facilitate the delineation of damage zones inside the surrounding rock mass.
Keywords： Fast marching method Microseismic event location Cavern-containing complex rock mass Runge–Kutta method
Development of Finite Element Limit Analysis Method and Its Applications in Geotechnical Engineering
Zheng Yingren,Zhao Shangyi,Deng Chujian,Liu Weiming,Tang Xiaosong,Zhang Liming
Strategic Study of CAE 2006, Volume 8, Issue 12, Pages 39-61
Finite element limit analysis method has the advantage of combining numerical analysis method with traditional limit equilibrium methods. It is particularly applicable to the analysis and design of geotechnical engineering. In the early 20th century, finite element limit analysis method has been developed vigorously in domestic geotechnical engineering using international common finite element procedures. It made great achievements in basic theory research, computational precision improvement, and broadening the application fields in the practical projects. In order to gradually achieon innovation in geotechnical design methods, this paper presented some research results of the authors and their collaborators. These mainly include geotechnical safety factor definitions, method principles, the overall failure criterion, deduction and selection of yield criterion, and the measure to improve the computational precision, etc. The application fields have been broadened from two-dimensional to three-dimensional, from soil slope to jointed rock slope and foundation, from stable seepage to nonstable seepage, from slope and foundation to tunnel. This method has also been used for searching sliding surface of complex landslide, retaining structure design considering the interaction between soil and structure, simulating foundation bearing plates load tests, and so on.
Keywords： limit analysis method finite element method geotechnical engineering slope foundations tunnel
Survey on Extraction Methods of Transition Region
Liu Suolan,Yang Jingyu
Strategic Study of CAE 2007, Volume 9, Issue 9, Pages 89-96
Image segmentation is treated as a key issue in image processing and machine vision, and has been the bottleneck of development. Transition region is a special region located between the object and background. Having the aid of extraction of transition region to segment image is a kind of burgeoning technology. Two kinds of methods have been introduced: methods based on gradient and methods based on non-gradient. Briefly, the extracted effects and existent problem have been analyzed.
Keywords： transition region extraction image segmentation gradient method non-gradient method
The Production Technology of Electronic Grade Polycrystalline Silicon
Liang Junwu
Strategic Study of CAE 2000, Volume 2, Issue 12, Pages 34-39
The technology of construction of an electronic grade polycrystalline silicon plant with annual production of 1 000 tons is explored. The product qualities, safety, transportation, storage, useful deposition ratios, deposition rates, one pass conversions, deposition temperatures, electrical energy consumption and manufacturing costs are summarized for silane, dichlorosilane, trichlorosilane and tetrachlorosilane methods. The bell jar, fluidized bed and free-space polysilicon reactors for polysilicon deposition are compared with each other. In addition, the flow charts of polysilicon production are described. The trichlorosilane method of third generation using bell jar reactors is suitable for a plant with an annual production of 1 000 tons of electronic grade polysilicon.
Keywords： polysilicon trichlorosilane method silane method flow chart production
Title Author Date Type Operation
Research on the optimal selection model of rockfill dam type and evaluation method
Chen Yongxing,Chang Haotian,Lu Wenyan and Ren Bingyu
Journal Article
A Full-Scale Optimization of a Crop Spatial Planting Structure and Its Associated Effects
Qi Liu, Jun Niu, Taisheng Du, Shaozhong Kang
Journal Article
TODIM and TOPSIS with Z-numbers
Renato A. KROHLING, André G. C. PACHECO, Guilherme A. dos SANTOS
Journal Article
Comprehensive evaluation factor of optoelectronic properties for transparent conductive metallic mesh films
Yilei Zhang, Jinxuan Cao, Zhengang Lu, Heyan Wang, Jiubin Tan,luzhengang@hit.edu.cn
Journal Article
Ranking of design scenarios of TMD for seismically excited structures using TOPSIS
Sadegh ETEDALI
Journal Article
A model for the evaluation of environmental impact indicators for a sustainable maritime transportation systems
Lizzette Pérez LESPIER, Suzanna LONG, Tom SHOBERG, Steven CORNS
Journal Article
Combined Application of Wide-Field Electromagnetic Method and Flow Field Fitting Method for High-Resolution Exploration: A Case Study of the Anjialing No. 1 Coal Mine
Jishan He
Journal Article
The split installation and application of offshore wind turbine generator systems
Sun Guangxi,Huang Yaxin
Journal Article
Research on shallow tunneling construction method of large section tunnel under the water-rich sandy gravel stratum
Tang Guorong,Liu Zhaowei,Li Jianhua
Journal Article
The application of advanced threshold denoising tothe MMW target radiation signal
Fan Qinghui,Li Xingguo
Journal Article
Development of ASCP for Ammonium Phosphate Technology and Five Projects of Phosphate Fertilizer in China
Zhong Benhe
Journal Article
Fast Marching Method for Microseismic Source Location in Cavern-Containing Rockmass: Performance Analysis and Engineering Application
Ruochen Jiang, Feng Dai, Yi Liu, Ang Li
Journal Article
Development of Finite Element Limit Analysis Method and Its Applications in Geotechnical Engineering
Zheng Yingren,Zhao Shangyi,Deng Chujian,Liu Weiming,Tang Xiaosong,Zhang Liming
Journal Article
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