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基于进化支持向量机的滑动面参数识别

岩土工程学报 2006年第4期28卷 541-544页

作者：赵洪波中国科学院武汉岩土力学研究所岩土力学重点实验室

提出了反算滑带岩土强度参数的一种新方法——进化支持向量机方法,该方法基于极限平衡分析方法计算出不同c、值下的安全系数与最危险滑动面,以这些数据作为学习样本,通过支持向量机学习,建立他们之间的非线性映射关系,然后基于这种关... 详细信息

提出了反算滑带岩土强度参数的一种新方法——进化支持向量机方法,该方法基于极限平衡分析方法计算出不同c、值下的安全系数与最危险滑动面,以这些数据作为学习样本,通过支持向量机学习,建立他们之间的非线性映射关系,然后基于这种关系,利用遗传算法搜索滑带岩土强度参数。结果表明,识别出的c、值可以满足工程的要求。

关键词：滑坡极限平衡原理支持向量机反分析遗传算法

Perenniality:From model plants to applications in agriculture

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Molecular Plant 2024年第1期17卷 141-157页

作者： bo zhao Jia-Wei Wang National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant Sciences(CEMPS)Institute of Plant Physiology and Ecology(SIPPE)Chinese Academy of Sciences(CAS)Shanghai 200032China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China Key Laboratory of Plant Carbon Capture CASShanghai 200032China New Cornerstone Science Laboratory Shanghai 200032China

To compensate for their sessile nature,plants have evolved sophisticated mechanisms enabling them to adapt to ever-changing *** such prominent feature is the evolution of diverse life history strategies,particularly such that annuals reproduce once followed by seasonal death,while perennials live longer by cycling growth *** intrinsic phenology is primarily genetic and can be altered by environmental *** evolutionary transitions between annual and perennial life history strategies are common,perennials account for most species in nature because they survive well under year-round *** proportion,however,is reversed in ***,perennial crops promise to likewise protect and enhance the resilience of agricultural ecosystems in response to climate *** significant endeavors that have been made to generate perennial crops,progress is slow because of barriers in studying perennials,and many developed species await further *** findings in model species have illustrated that simply rewiring existing genetic networks can lead to lifestyle *** implies that engineering plant life history strategy can be achieved by manipulating only a few key *** this review,we summarize our current understanding of genetic basis of perenniality and discuss major questions and challenges that remain to be addressed.

关键词： perenniality developmental plasticity flowering time poplar Arabis alpina perennial crops life history strategy

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支持向量机在隧道围岩变形预测中的应用

岩石力学与工程学报 2005年第4期24卷 649-652页

作者：赵洪波浙江大学建筑工程学院

将支持向量机应用于隧道围岩变形的预测中,将围岩变形看作一个非线性变形序列,然后采用时间序列分析技术,用支持向量机建立非线性变形序列之间的映射关系,进而对未来的变形进行预测。结果表明,该方法是科学可行的,并且具有简单、方便、... 详细信息

将支持向量机应用于隧道围岩变形的预测中,将围岩变形看作一个非线性变形序列,然后采用时间序列分析技术,用支持向量机建立非线性变形序列之间的映射关系,进而对未来的变形进行预测。结果表明,该方法是科学可行的,并且具有简单、方便、实时等特点。

关键词：隧道工程支持向量机变形预测

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基于GA与SVM的最危险滑动面识别

岩土力学 2006年第11期27卷 2011-2014页

作者：赵洪波中国科学院岩土力学重点实验室

结合支持向量机与遗传算法,提出了一种边坡最危险滑动面识别的新方法。这种方法基于正交设计和极限平衡分析获得学习样本,通过支持向量机学习,从而获得最危险滑动面与安全系数之间的非线性映射关系,再用遗传算法从全局空间上搜索,进行... 详细信息

结合支持向量机与遗传算法,提出了一种边坡最危险滑动面识别的新方法。这种方法基于正交设计和极限平衡分析获得学习样本,通过支持向量机学习,从而获得最危险滑动面与安全系数之间的非线性映射关系,再用遗传算法从全局空间上搜索,进行最危险滑动面的识别,并同时获得对应的最小安全系数,该方法计算速度快、效率高。给出了两个算例,结果是令人满意的。

关键词：支持向量机位移反分析遗传算法有限元

Dynamic plugging regulating strategy of pipeline robot based on reinforcement learning

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Petroleum Science 2024年第1期21卷 597-608页

作者： Xing-Yuan Miao hong zhao College of Mechanical and Transportation Engineering China University of PetroleumBeijing102249China

Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the pipeline and PIPR. In this paper, we propose a dynamic regulating strategy to reduce the plugging-induced vibration by regulating the spoiler angle and plugging velocity. Firstly, the dynamic plugging simulation and experiment are performed to study the flow field changes during dynamic plugging. And the pressure difference is proposed to evaluate the degree of flow field vibration. Secondly, the mathematical models of pressure difference with plugging states and spoiler angles are established based on the extreme learning machine (ELM) optimized by improved sparrow search algorithm (ISSA). Finally, a modified Q-learning algorithm based on simulated annealing is applied to determine the optimal strategy for the spoiler angle and plugging velocity in real time. The results show that the proposed method can reduce the plugging-induced vibration by 19.9% and 32.7% on average, compared with single-regulating methods. This study can effectively ensure the stability of the plugging process.

关键词： Pipeline isolation plugging robot Plugging-induced vibration Dynamic regulating strategy Extreme learning machine Improved sparrow search algorithm Modified Q-learning algorithm

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基于支持向量机的边坡可靠性分析

岩土工程学报 2007年第6期29卷 819-823页

作者：赵洪波河南理工大学土木工程学院河南焦作454001

将支持向量机与一阶二次矩方法结合,提出了边坡可靠性分析的支持向量机方法。利用极限平衡分析构造学习样本,通过支持向量机学习,建立安全系数与随机变量之间映射关系的支持向量机表达,进而实现边坡极限状态函数及其偏导数的显式表达,... 详细信息

将支持向量机与一阶二次矩方法结合,提出了边坡可靠性分析的支持向量机方法。利用极限平衡分析构造学习样本,通过支持向量机学习,建立安全系数与随机变量之间映射关系的支持向量机表达,进而实现边坡极限状态函数及其偏导数的显式表达,从而计算边坡的可靠性指标。该方法避免了传统可靠性分析的缺点。利用一个算例进行了分析,结果表明:该方法计算效率高,结果可靠,对含有大量随机变量的复杂岩土工程可靠性分析具有很大的潜力,具有广泛的应用前景和工程价值。

关键词：边坡工程可靠性分析一阶二次矩支持向量机

Studies of an event-building algorithm of the readout system for the twin TPCs in HFRS

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Nuclear Science and Techniques 2024年第4期35卷 82-95页

作者： Jing Tian Zhi-Peng Sun Song-bo Chang Yi Qian hong-Yun zhao Zheng-Guo Hu Xi-Meng Chen Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of LanzhouLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong LaboratoryHuizhou 516000China

The High-energy Fragment Separator(HFRS),which is currently under construction,is a leading international radioactive beam *** sets of position-sensitive twin time projection chamber(TPC)detectors are distributed on HFRS for particle identification and beam *** twin TPCs'readout electronics system operates in a trigger-less mode due to its high counting rate,leading to a challenge of handling large amounts of *** address this problem,we introduced an event-building *** algorithm employs a hierarchical processing strategy to compress data during transmission and *** addition,it reconstructs twin TPCs'events online and stores only the reconstructed particle information,which significantly reduces the burden on data transmission and storage *** studies demonstrated that the algorithm accurately matches twin TPCs'events and reduces more than 98%of the data volume at a counting rate of 500 kHz/channel.

关键词： High counting rate Twin TPCs Trigger-less Readout electronics Event building Hierarchical data processing

Impact of Hinterland Manufacturing on the Development of Container Ports: Evidence from the Pearl River Delta, China

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Chinese Geographical Science 2024年第5期34卷 886-898页

作者： hong Haolin WANG bo XUE Desheng School of Geography and Planning Sun Yat-sen UniversityGuangzhou 510006China

Container ports and hinterland manufacturing are two important forces of the local participation in economic *** study,taking the Pearl River Delta(PRD),China with an export-oriented economy as an example,applies Huff and panel regres-sion models to evaluate the impact of hinterland manufacturing on the development of container ports during the period of 1993–*** results show that 1)the spatial patterns of hinterlands for hub ports help to determine the distribution range and scale of economic variables that affect port throughput;2)the hinterland’s gross manufacturing output has universally positive influence on port through-put,wherein export-oriented processing and the entire manufacturing industry have significantly positive impact on port throughput in 1993–2011 and 2001–2019,respectively;3)the two internal structural factors related to an export-oriented economy,labor-intensive sectors and foreign-funded terminals,have positively moderate the direct influence of hinterland manufacturing on port *** results highlight the importance of local context in understanding port-manufacturing relationship in developing *** on our findings,policy implications are further proposed to enhance port network organization in PRD.

关键词： container ports hinterland manufacturing local development context Huff model panel regression model Pearl River Delta(PRD),China

Probabilistic back analysis for geotechnical engineering based on Bayesian and support vector machine

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Journal of Central South University 2015年第12期22卷 4778-4786页

作者：陈炳瑞赵洪波茹忠亮李贤 State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of Sciences School of Civil Engineering Henan Polytechnic University School of Resource and Environmental Engineering Wuhan University of Science and Technology

Geomechanical parameters are complex and *** order to take this complexity and uncertainty into account,a probabilistic back-analysis method combining the Bayesian probability with the least squares support vector machine(LS-SVM) technique was *** Bayesian probability was used to deal with the uncertainties in the geomechanical parameters,and an LS-SVM was utilized to establish the relationship between the displacement and the geomechanical *** proposed approach was applied to the geomechanical parameter identification in a slope stability case study which was related to the permanent ship lock within the Three Gorges project in *** results indicate that the proposed method presents the uncertainties in the geomechanical parameters reasonably well,and also improves the understanding that the monitored information is important in real projects.

关键词： geotechnical engineering back analysis uncertainty Bayesian theory least square method support vector machine(SVM)