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基于离散布谷鸟算法的综合能源系统电气互联鲁棒状态估计方法

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机械与电子 2024年第4期42卷 50-54,59页

作者：张丽洁张章齐晓光王聪国网河北省电力有限公司经济技术研究院河北石家庄050081 国网河北省电力有限公司石家庄供电分公司河北石家庄050004

受量测装置采样时间单位不统一影响,GEIES量测数据误差较大,为提升GEIES状态估计精度,将离散布谷鸟算法应用至综合能源系统状态估计中,提出一种新的GEIES状态估计方法。建立贝叶斯量测模型获取气网和电网状态估计量测数据,增加量测数据... 详细信息

受量测装置采样时间单位不统一影响,GEIES量测数据误差较大,为提升GEIES状态估计精度,将离散布谷鸟算法应用至综合能源系统状态估计中,提出一种新的GEIES状态估计方法。建立贝叶斯量测模型获取气网和电网状态估计量测数据,增加量测数据集的完备性,为保证GEIES状态估计结果不受噪声因素影响,设置高斯噪声方差。将量测结果代入至GEIES状态估计中,分别建立电网状态估计模型和气网状态估计模型,并将二者结合建立综合能源系统电气互联鲁棒状态估计模型,通过离散布谷鸟算法求解该模型,获取状态估计最优解。算例结果表明,不论是无噪声环境还是有噪声环境,所提方法的状态估计结果精度均较高,且能够起到坏数据辨识的作用,说明其状态估计效果较好。

关键词：离散布谷鸟算法综合能源系统电气互联状态估计贝叶斯量测模型

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苹果植株对盐碱胁迫响应机制研究进展

分子植物育种 2024年第12期22卷 3961-3969页

作者：邵静包振龙李粤渤张学明齐晓光张冰冰吉林省农业科学院长春130033

苹果是世界重要果树作物之一,其生产易受外界不利环境因素影响,特别是土壤盐碱化严重制约了苹果产业的发展。了解苹果植株生长对盐碱胁迫的响应和防御机制,将为苹果耐盐碱栽培技术的研究、耐盐碱品种的选育奠定理论基础。本研究从苹果... 详细信息

苹果是世界重要果树作物之一,其生产易受外界不利环境因素影响,特别是土壤盐碱化严重制约了苹果产业的发展。了解苹果植株生长对盐碱胁迫的响应和防御机制,将为苹果耐盐碱栽培技术的研究、耐盐碱品种的选育奠定理论基础。本研究从苹果植株生长、光合以及叶片显微结构等三个方面阐述了盐碱胁迫对苹果植株生长的影响;重点从离子调节机制、渗透调节机制、保护酶系统和有机酸合成四个方面阐述了苹果植株对盐碱胁迫的生理响应机制;总结了苹果植株响应盐碱胁迫的功能基因、相关转录因子和MicroRNA,并介绍了分子标记在苹果耐盐碱研究中的应用,研究发现苹果响应盐碱胁迫的功能基因主要有渗透调节物质合成基因、编码抗逆蛋白相关基因、离子转运和重建离子平衡相关基因等三大类,响应苹果盐碱胁迫的转录因子主要有WRKY、MYB、NAC、AP2/ERF、bZIP、bHLH以及SPL等,并对存在的问题以及未来的研究重点进行展望,以期为今后的苹果耐盐碱研究及生产应用提供参考。

关键词：苹果耐盐性耐碱性研究进展

黑叶猴个体识别的新方法:基于腹股沟白斑斑纹观测

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兽类学报 2024年第2期44卷 247-251页

作者：颜修刚齐晓光郭艳清张鹏吴安康杨朝辉贵州麻阳河国家级自然保护区管理局沿河565300 西北大学生命科学学院西安710000

动物个体识别是进行种群数量监测、动物行为学和生态学研究的基础。通过区分个体特征差异,可收集个体行为、社会联属行为和迁移行为等重要数据(Cronin,2012;Crouse et al.,2017),为动物种群数量评估和制定有效保护策略提供关键基础数据... 详细信息

动物个体识别是进行种群数量监测、动物行为学和生态学研究的基础。通过区分个体特征差异,可收集个体行为、社会联属行为和迁移行为等重要数据(Cronin,2012;Crouse et al.,2017),为动物种群数量评估和制定有效保护策略提供关键基础数据。濒危野生动物个体识别方法目前有足迹识别、条纹识别(顾佳音等,2013)、DNA识别(张保卫,2005)、基于卷积神经网络(Convolutional Neural Network,CNN)进行个体面部图像识别(王革伟,2018;qi et al.,2020)等。

关键词：黑叶猴野生种群个体识别白斑斑纹

Transfer force perception skills to robot‐assisted laminectomy via imitation learning from human demonstrations

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CAAI Transactions on Intelligence Technology 2024年第4期9卷 903-916页

作者： Meng Li Xiaozhi qi xiaoguang Han Ying Hu Bing Li Yu Zhao Jianwei Zhang Harbin Institute of Technology ShenzhenChina Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhenChina Shenzhen Key Laboratory of Minimally Invasive Surgical Robotics and System Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina Beijing Jishuitan Hospital Capital Medical UniversityBeijingChina Department of Orthopedics Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina University of Hamburg Hamburg22527Germany

A comparative study of two force perception skill learning approaches for robot‐assisted spinal surgery,the impedance model method and the imitation learning(IL)method,is *** impedance model method develops separate models for the surgeon and patient,incorporating spring‐damper and bone‐grinding *** surgeons'feature parameters are collected and mapped using support vector regression and image navi-gation *** imitation learning approach utilises long short‐term memory networks(LSTM)and addresses accurate data labelling challenges with custom *** results demonstrate skill recognition rates of 63.61%-74.62%for the impedance model approach,relying on manual feature ***,the imitation learning approach achieves a force perception recognition rate of 91.06%,outperforming the impedance model on curved bone *** findings demonstrate the potential of imitation learning to enhance skill acquisition in robot‐assisted spinal surgery by eliminating the laborious process of manual feature extraction.

关键词： learning(artificial intelligence) medical applications medical signal processing robotics

Increased Oxygen Vacancies in CuO-ZnO Snowflake-like Composites Drive the Hydrogenation of CO_(2) to Methanol

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China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 22-33页

作者： San xiaoguang Wu Wanmeng Zhang Lei Meng Dan Chang Xiangshuang Tan Jianen qi Jian College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142China Shenyang Xinghua Aviation Electrical Appliances Co. Ltd.Shenyang 110023China Department of Prosthodontics PLA 964 HospitalChangchun 130000China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Cu/ZnO is widely used in the hydrogenation of carbon dioxide (CO_(2)) to methanol (CH_(3)OH) to improve the lowconversion rate and selectivity generally observed. In this work, a series of In, Zr, Co, and Ni-doped CuO-ZnO catalysts wassynthesized via a hydrothermal method. By introducing a second metal element, the activity and dispersion of the activesites can be adjusted and the synergy between the metal and the carrier can be enhanced, forming an abundance of oxygenvacancies. Oxygen vacancies not only adsorb CO_(2) but also activate the intermediates in methanol synthesis, playing a keyrole in the entire reaction. Co3O4-CuO-ZnO had the best catalytic performance (a CO_(2) conversion rate of 9.17%;a CH_(3)OHselectivity of 92.77%). This study describes a typical strategy for multi-component doping to construct a catalyst with anabundance of oxygen vacancies, allowing more effective catalysis to synthesize CH_(3)OH from CO_(2).

关键词： CuO-ZnO catalyst CO_(2)hydrogenation to CH_(3)OH doping oxygen vacancy synergy

A newly-found pattern of social relationships among adults within one-male units of golden snub-nosed monkeys(Rhinopithecus roxenalla)in the qinling Mountains,China

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Integrative Zoology 2013年第4期8卷 400-409页

作者： Xiaowei WANG Chengliang WANG xiaoguang qi Songtao GUO Haitao ZHAO Baoguo LI Institute of Zoology Shaanxi Academy of SciencesXi’anChina College of Life Sciences Northwest UniversityXi’anChina

Group living provides various advantages to individuals in regards to protection avoidance,intergroup competition,productive success and social *** one-male units(OMUs)consist of relationships between the adult females and the resident male as well as the relationships among adult *** on continuous observation of a reproductive group of golden snub-nosed monkeys(Rhinopithecus roxellana)in the qinling Mountains,we analyzed the relationships among adult individual dyads within 4 *** results indicated that in golden snub-nosed monkey societies,females not only had no strong tendency to build a relationship with the resident male in the OMU but also had no strong tendency to build relationships with other females in the *** comparison with hamadryas(Papio hamadryas)and gelada baboons(Theropithecus gelada),the relationships within golden snub-nosed monkeys OMUs showed neither the star-shaped pattern observed in hamadryas baboons nor the net-shaped pattern observed in gelada *** concluded that the relationships within golden snub-nosed monkey OMUs indicated a third pattern in nonhuman primate *** research is required to determine the potential mechanisms for such a pattern.

关键词： adult dyad relationships golden snub-nosed monkey one-male unit patterns of social relationships Rhinopithecus roxellana

UNIQUENESS OF DIFFERENCE POLYNOMIALS OF MEROMORPHIC FUNCTIONS

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Acta Mathematica Scientia 2014年第2期34卷 444-452页

作者：刘永祁晓光 Department of Mathematics Shaoxing College of Arts and Sciences Department of Physics and Mathematics Joensuu CampusUniversity of Eastern Finland Department of Mathematics Jinan University

In this article, we investigate the uniqueness problems of difference polynomials of meromorphic functions and obtain some results which can be viewed as discrete analogues of the results given by Shibazaki. Some exam... 详细信息

关键词： Meromorphic functions difference polynomials uniqueness finite order

Free-ranging Sichuan snub-nosed monkeys Rhinopithecus roxellana： Neophobia, neophilia, or both？

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Current Zoology 2013年第3期59卷 311-316页

作者： Weiwei FU Dapeng ZHAO xiaoguang qi Songtao GUO Wei WEI Baoguo LI College of Life Sciences Northwest University Xi'an 710069 China College of Life Sciences Tianjin Normal University Tianjin 300387 China Institute of Zoology Shaanxi Academy of Sciences Xi'an 710032 China

We studied the responsiveness of the Sichuan snub-nosed monkeyRhinopithecus roxellana, an arboreal Old World monkey, to the presence of novel stimuli associated with familiar food. We also determined differences in responses by age and sex. Results showed that monkeys exhibited neophilia and neophobia simultaneously when facing novel stimuli. Age affected the response to novel stimuli significantly, with immature individuals responding to novel stimuli most frequently and infants least frequently. No significant differences were observed for sex, although females were more responsive to the novel object than were males. Our results support the “readiness to eat” hypothesis that the presence of a novel object can increase latencies to consume familiar food.

关键词：川金丝猴自由放养性别差异反应食物年龄树栖猴子

Numerical Simulation of Damage and Fracture on Typical Interfaces of Plasma Sprayed Thermal Barrier Coatings

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稀有金属材料与工程 2011年第S3期40卷 166-170页

作者： qi Hongyu, Yang xiaoguang, Xie Jian, Wei Hongliang Beihang University, Beijing 100191, China Beihang Univ Sch Jet Prop Beijing 100191 Peoples R China

Modern thermal barrier coatings (TBC) are required to not only limit heat transfer through the coating but to also protect engine components from thermal cyclic load and oxidation. Failure mechanism of TBC is important for the safety status of components. To obtain a better understanding of the failure mechanism under thermal cyclic load, a new type of interface elements with three nodes which is based on the idea of interface damage mechanics was proposed. Compared with traditional interface elements, these elements have the quality of indicating the normal direction of interface with arbitrary shape. The modified model was implemented into ABAQUS by user subroutine UEL. The damage and fracture of cosine shape interface were numerical simulated considering the rough interface of the plasma sprayed thermal barrier coating. The calculating results show that, under thermal cycle loadings, the displacement between nodes of the interface elements is not continuous which represents the opening process of the interface crack, the damage increases with the number of thermal cycle loadings and the max damage is caused during the first cycle, the top of the interface is the critical position and the normal separation dominants; under tension loadings, the wavy interface has better capability of load bearing than the linear interface for PS-TBC. Simulation of damage and fracture for different materials with arbitrary interface using the modified interface elements is available, and the results are reasonable.

关键词： interface elements thermal barrier coatings interfaces damage fracture