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Influence of Incomplete Soil Plugs on Bearing Capacities of Bucket Foundations in Clay

China Ocean Engineering 2024年第1期38卷 144-155页

作者： LI Hui-shan LIU Run YANG Xu lian Ji-jian State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation Tianjin UniversityTianjin 300072China School of Civil Engineering Tianjin UniversityTianjin 300072China Institute of Marine Energy and Intelligent Construction Tianjin University of TechnologyTianjin 300384China

Due to the uneven seabed and heaving of soil during pumping,incomplete soil plugs may occur during the installation of bucket foundations,and the impacts on the bearing capacities of bucket foundations need to be *** this paper,the contact ratio(the ratio of the top diameter of the soil plug to the diameter of the bucket)and the soil plug ratio(the ratio of the soil heave height to the skirt height)are defined to describe the shape and size of the incomplete soil ***,finite element models are established to investigate the bearing capacities of bucket foundations with incomplete soil plugs and the influences of the contact ratios,and the soil plug ratios on the bearing capacities are *** results show that the vertical bearing capacity of bucket foundations in homogeneous soil continuously improves with the increase of the contact ***,in normally consolidated soil,the vertical bearing capacity barely changes when the contact ratio is smaller than 0.75,while the bearing capacity suddenly increases when the contact ratio increases to 1 due to the change of failure *** contact ratio hardly affects the horizontal bearing capacity of bucket ***,the moment bearing capacity improves with the increase of the contact ratio for small aspect ratios,but hardly varies with increasing contact ratio for aspect ratios larger than ***,the reduction coefficient method is proposed based on this analysis to calculate the bearing capacities of bucket foundations considering the influence of incomplete soil *** comparison results show that the proposed reduction coefficient method can be used to evaluate the influences of incomplete soil plug on the bearing capacities of bucket foundations.

关键词： bucket foundation incomplete soil plug uniaxial bearing capacity contact ratio soil plug ratio

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On Quasi-weakly Almost Periodic Points of Continuous Flows

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Acta Mathematica Sinica,English Series 2019年第2期35卷 257-269页

作者： qi YAN jian Dong YIN Department of Mathematics Nanchang University School of Mathematical science Xiamen University

Let X be a compact metric space, F : X ×R→ X be a continuous flow and x ∈ X a proper quasi-weakly almost periodic point, that is, x is quasi-weakly almost periodic but not weakly almost periodic. The aim of this paper is to investigate whether there exists an invariant measure generated by the orbit of x such that the support of this measure coincides with the minimal center of attraction of x? In order to solve the problem, two continuous flows are constructed. In one continuous flow,there exist a proper quasi-weakly almost periodic point and an invariant measure generated by its orbit such that the support of this measure coincides with its minimal center of attraction; and in the other,there is a proper quasi-weakly almost periodic point such that the support of any invariant measure generated by its orbit is properly contained in its minimal center of attraction. So the mentioned problem is sufficiently answered in the paper.

关键词： Continuous flow weakly almost periodic point quasi-weakly almost periodic point minimal center of attraction

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In-depth analysis of the fatigue mechanism induced by inclusions for high-strength bearing steels

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International Journal of Minerals,Metallurgy and Materials 2021年第5期28卷 826-834页

作者： Chao Gu Wen-qi Liu Jun-he lian Yan-ping Bao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Department of Mechanical Engineering Aalto UniversityPuumiehenkuja 302150 EspooFinland

A numerical study of stress distribution and fatigue behavior in terms of the effect of voids adjacent to inclusions was conducted with finite element modeling simulations under different *** mechanisms were also analyzed *** results showed that the effects of inclusions on fatigue life will distinctly decrease if the mechanical properties are close to those of the steel *** the inclusions,which are tightly bonded with the steel matrix,when the Young’s modulus is larger than that of the steel matrix,the stress will concentrate inside the inclusion;otherwise,the stress will concentrate in the steel *** voids exist on the interface between inclusions and the steel matrix,their effects on the fatigue process differ with their positions relative to the *** void on one side of an inclusion perpendicular to the fatigue loading direction will aggravate the effect of inclusions on fatigue behavior and lead to a sharp stress *** void on the top of inclusion along the fatigue loading direction will accelerate the debonding between the inclusion and steel matrix.

关键词： inclusion high-strength bearing steel fatigue numerical study stress distribution

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Big Data-Based Transformer Substation Fault Prediction Method

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Journal of Electronic Science and Technology 2021年第2期19卷 173-185页

作者： Xin Wu jian Li qi Huang School of Mechanical and Electrical Engineering University of Electronic Science and Technology of ChinaChengdu 610054

Transformer substations play a major role in power *** fault of a transformer substation will jeopardize the safety and effective operation of the power *** fault signal of a transformer substation includes the fault status and fault occurrence *** this paper,we propose a transformer substation fault prediction method based on big data ***,a new transformer substation fault prediction method is developed by combining the advantages of decision tree algorithms and grey system theory to predict the fault status and occurrence time with high *** a case study,the transformer substation fault signals obtained from a region in the southwest of China are analyzed using the proposed method based on big *** experimental results confirm that the proposed method achieves high-accuracy fault prediction.

关键词： Big data decision tree grey system theory power system prediction

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Synthetic Lethal Interactions Prediction Based on Multiple Similarity Measures Fusion

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Journal of Computer Science & Technology 2021年第2期36卷 261-275页

作者： lian-lian Wu Yu-qi Wen Xiao-Xi Yang Bo-Wei Yan Song He Xiao-Chen Bo Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjin 300072China Department of Biotechnology Beijing Institute of Radiation MedicineBeijing 100850China Experimental Center Beijing Friendship HospitalCapital Medical UniversityBeijing 100850China

The synthetic lethality(SL)relationship arises when a combination of deficiencies in two genes leads to cell death,whereas a deficiency in either one of the two genes does *** survival of the mutant tumor cells depends on the SL partners of the mutant gene,thereby the cancer cells could be selectively killed by inhibiting the SL partners of the oncogenic genes but normal cells could ***,there is an urgent need to develop more efficient computational methods of SL pairs identification for cancer targeted *** this paper,we propose a new approach based on similarity fusion to predict SL *** types of gene similarity measures are integrated and/c-nearest neighbors algorithm(k-NN)is applied to achieve the similarity-based classification task between gene *** a similarity-based method,our method demonstrated excellent performance in multiple *** the effectiveness of our method,the ease of use and expansibility can also make our method more widely used in practice.

关键词： synthetic lethality similarity measures fusion k-nearest neighbor multi-dimensional data

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Structural Feature and Internal Motion of Hyperbranching Cluster System with Low Polydispersity and Featured Pattern in Dilute Solutions

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Chinese Journal of Polymer Science 2022年第12期40卷 1515-1521,I0006页

作者： Si-qi Huang Mo Zhu Jin-Xian Yang lian-Wei Li College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China

This work reports the structural feature and internal motion of one novel hyperbranching cluster system in dilution *** cluster system is composed of HB-PS_(300)-g-Pt BA_(45) hypergraft copolymer chains with uniform subchain,high molar mass and low polydispersity(M_(w)=1.73×106 g/mol and≈1.07),where HB-PS and Pt BA represent hyperbranched polystyrene core and poly(tert-butyl polyacrylate)graft,*** the selective solvent of PS blocks(cyclohexane,T_(θ)=34.5℃),the aggregation kinetics and structural feature are found to be precisely tunable for assembled clusters by the aggregation temperature(11℃

关键词： Hyperbranching cluster Structural feature Internal motion

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Orthogonality and Quintic Functional Equations

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Acta Mathematica Sinica,English Series 2013年第7期29卷 1381-1390页

作者： Choonkil PARK jian lian CUI Madjid Eshaghi GORDJI Department of Mathematics Research Institute for Natural Sciences Hanyang University Department of Mathematical Sciences Tsinghua University Department of Mathematics Semnan University

Using the fixed point method, we prove the Hyers Ulam stability of an orthogonally quintic functional equation in Banach spaces and in non-Archimedean Banach spaces.

关键词： Hyers-Ulam stability orthogonally quintic functional equation fixed point orthogonalityspace non^Archimedean Banach space

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Expression Analysis Based on Face Regions in Real-world Conditions

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International Journal of Automation and computing 2020年第1期17卷 96-107页

作者： Zheng lian Ya Li jian-Hua Tao jian Huang Ming-Yue Niu National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of Sciences(CAS)Beijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100190China CAS Center for Excellence in Brain Science and Intelligence Technology Institute of AutomationChinese Academy of SciencesBeijing 100190China

Facial emotion recognition is an essential and important aspect of the field of human-machine *** research on facial emotion recognition focuses on the laboratory ***,it faces many challenges in real-world conditions,i.e.,illumination changes,large pose variations and partial or full *** challenges lead to different face areas with different degrees of sharpness and *** by this fact,we focus on the authenticity of predictions generated by different*** example,if only the mouth areas are available and the emotion classifier predicts happiness,then there is a question of how to judge the authenticity of *** problem can be converted into the contribution of different face areas to different *** this paper,we divide the whole face into six areas:nose areas,mouth areas,eyes areas,nose to mouth areas,nose to eyes areas and mouth to eyes *** obtain more convincing results,our experiments are conducted on three different databases:facial expression recognition+(FER+),real-world affective faces database(RAF-DB)and expression in-the-wild(ExpW)*** analysis of the classification accuracy,the confusion matrix and the class activation map(CAM),we can establish convincing *** sum up,the contributions of this paper lie in two areas:1)We visualize concerned areas of human faces in emotion recognition;2)We analyze the contribution of different face areas to different emotions in real-world conditions through experimental *** findings can be combined with findings in psychology to promote the understanding of emotional expressions.

关键词： Facial emotion analysis face areas class activation map confusion matrix concerned area

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Unification of Filled Function and Tunnelling Function in Global Optimization

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Acta Mathematicae Applicatae Sinica 2007年第1期23卷 59-66页

作者： Wei Wang Yong-jian Yang lian-sheng Zhang Department of Mathematics East China University of Science and Technology Shanghai 200237 China Department of Mathematics Shanghai University Shanghai 200444 China

In this paper, two auxiliary functions for global optimization are proposed. These two auxiliary functions possess all characters of tunnelling functions and filled functions under certain general assumptions. Thus, they can be considered as the unification of filled function and tunnelling function. Moreover, the process of tunneling or filling for global optimization can be unified as the minimization of such auxiliary functions. Result of numerical experiments shows that such two auxiliary functions are effective.

关键词： Nonlinear programming global optimization filled function tunnelling function unification

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Application of GIS technology in chemical emergency response

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Journal of Environmental Sciences 2000年第2期12卷 47-52页

作者： Wang, Gui-lian Lu, Yong-Long Xu, jian Sino-Canadian High-tech Center of Resources and Environment Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Responding to concerns raised by the Bhopal accident, more and more attention has been paid to local emergency, especially chemical emergency, prevention and planning worldwide, and many chemical emergency response systems for public response personnel have been built. With the successful application of geographical information system (GIS) technology in many fields, GIS can be an efficient tool for effective response to chemical emergencies. The purpose of this paper is to introduce the application of GIS technology in emergency response. Typical GIS technology is simply introduced and some of its existing applications to emergency, mainly natural disaster, response are summarized. Spatial data and spatial analysis requirements for chemical monitoring and emergency response are also discussed in detail. Finally a chemical monitoring and emergency response system under development by combining GIS and expert system for both chemical distribution centers and public response personnel is presented.

关键词： GIS chemical emergency emergency response chemical management expert system CLC number: X14 Document code: A

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