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Second-order Optimality Conditions for Cone-subarcwise Connected Set-valued Optimization Problems

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Acta Mathematicae Applicatae Sinica 2018年第1期34卷 183-196页

作者： Zhen-hua peng Yi-hong XU Department of Mathematics Nanchang University

The concept of a cone subarcwise connected set-valued map is introduced. Several examples are given to illustrate that the cone subarcwise connected set-valued map is a proper generalization of the cone arcwise connected set-valued map, as well as the arcwise connected set is a proper generalization of the convex set,respectively. Then, by virtue of the generalized second-order contingent epiderivative, second-order necessary optimality conditions are established for a point pair to be a local global proper efficient element of set-valued optimization problems. When objective function is cone subarcwise connected, a second-order sufficient optimality condition is also obtained for a point pair to be a global proper efficient element of set-valued optimization problems.

关键词： cone subarcwise connected set-valued map generalized contingent epiderivative global proper efficiency optimality condition

Taxonomy in the Kunming Institute of Botany(KIB): Progress during the past decade(2008-2018) and perspectives on future development

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Plant Diversity 2018年第4期40卷 147-157页

作者： Xiangqin Yu Chunlei Xiang hua peng Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany Chinese Academy of Sciences

The development of new taxonomical theories and approaches, particularly molecular phylogenetics, has led to the expansion of traditional morphology-based taxonomy into the concept of "integrative taxonomy." Taxonomic knowledge has assumed greater significance in recent years, particularly because of growing concerns over the looming biodiversity crisis. Since its establishment in 1938, the Kunming Institute of Botany(KIB), which is located in Yunnan province in Southwest China, has focused attention on the taxonomy and conservation of the flora of China. For the forthcoming 80 th anniversary of KIB, we review the achievements of researchers at KIB and their associates with respect to the taxonomy of land plants, fungi, and lichen. Major taxonomic advances are summarized for families of Calymperaceae,Cryphaeaceae, Lembophyllaceae, Neckeraceae, Polytrichaceae and Pottiaceae of mosses, Pteridaceae and Polypodiaceae of ferns, Taxaceae and Cycadaceae of gymnosperms, Asteraceae, Begoniaceae, Ericaceae,Euphorbiaceae, Gesneriaceae, Lamiaceae, Orchidaceae, Orobanchaceae, Poaceae, Theaceae and Urticaceae of angiosperms, Agaricaceae, Amanitaceae, Boletaceae, Cantharellaceae, Physalacriaceae Russulaceae, Suillaceae and Tuberaceae of fungi, and Ophioparmaceae and Parmeliaceae of lichens. Regarding the future development of taxonomy at KIB, we recommend that taxonomists continue to explore the biodiversity of China, integrate new theories and technologies with traditional taxonomic approaches,and engage in creative monographic work, with support from institutions, funding agencies, and the public.

关键词： Taxonomy Molecular phylogeny Land plants Fungi Lichen

我国犯罪记录查询制度:现状、问题与完善路径

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江苏警官学院学报 2024年第3期39卷 55-63页

作者：黄清秀彭文华上海政法学院刑事司法学院

犯罪记录查询是为了解、掌握犯罪状况和实现犯罪治理现代化,经有权限的主体申请,由特定国家机关通过法定程序对曾犯过罪的人既往的犯罪情况进行核查、询证的活动。犯罪记录查询制度是犯罪记录查询的规则或运作模式,建立犯罪记录查询制... 详细信息

犯罪记录查询是为了解、掌握犯罪状况和实现犯罪治理现代化,经有权限的主体申请,由特定国家机关通过法定程序对曾犯过罪的人既往的犯罪情况进行核查、询证的活动。犯罪记录查询制度是犯罪记录查询的规则或运作模式,建立犯罪记录查询制度既有利于实现犯罪治理现代化,又有利于犯罪人再社会化。我国有关犯罪记录查询的规定存在抽象化、管理分散化、规范性不足等问题。犯罪记录查询制度的完善需要建立由司法行政机关主管、全国统一的犯罪记录查询数据库,明确犯罪记录数据的采录范围与传输方式,还需要对犯罪记录的查询主体、查询程序及相关配套措施作出全面、系统的规定,使犯罪记录查询制度具体化、规范化、程序化,确保在司法实践中具有可操作性。

关键词：犯罪记录查询再社会化犯罪附随后果

Genetic and Association Mapping Study of English Grain Aphid Resistance and Tolerance in Bread Wheat Germplasm

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Journal of Integrative Agriculture 2014年第1期13卷 40-53页

作者： LI Feng-qi peng Jun-hua Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of Sciences University of Chinese Academy of Sciences Department of Soil and Crop Sciences Colorado State University

English grain aphid （EGA） is a destructive insect pest of wheat. To identify the loci associated with EGA resistance and tolerance, 70 bread wheat accessions mainly from central Asia were evaluated for EGA resistance and tolerance traits at two locations, and genotyped with 51 SSR markers. Totally, three accessions showed high or moderate levels resistance and 17 genotypes displayed highly or moderately tolerate to EGA. Genetic diversity of these lines was investigated also. After 97 SSR loci which evenly covered all wheat chromosomes were scanned for association, four SSR loci were significantly associated with EGA resistance and four with EGA tolerance. After association analysis was conducted with dynamic aphid densities, we found four loci Xgwm192b, Xgwm391, Xbarc98, and Xgwm613b were detected continuously at different growing stages of wheat. In addition, the loci of EGA resistance/tolerance and Russian wheat aphid resistance were compared. The results generated in this study would be helpful for utilization of the EGA resistance/tolerance germplasm, and for development of mapping populations in EGA resistance breeding programs.

关键词： English grain aphid resistance tolerance association mapping Triticum aestivum

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后路腰椎融合术椎间笼架沉降的相关因素

中国矫形外科杂志 2024年第9期32卷 808-814页

作者：刘研管华鹏曲新田李念虎山东中医药大学山东济南250255 山东中医药大学附属医院脊柱脊髓科山东济南250011

[目的]探讨后路腰椎间融合术(posterior lumbar interbody fusion,PLIF)术后融合器沉降的相关因素。[方法]2018年1月—3月行L4/5单节段PLIF手术91例患者纳入本研究,观察术后融合器沉降的发生情况,采用单因素比较和多元逻辑回归分析探索... 详细信息

[目的]探讨后路腰椎间融合术(posterior lumbar interbody fusion,PLIF)术后融合器沉降的相关因素。[方法]2018年1月—3月行L4/5单节段PLIF手术91例患者纳入本研究,观察术后融合器沉降的发生情况,采用单因素比较和多元逻辑回归分析探索融合器沉降发生的相关因素。[结果]至末次随访,发生融合器沉降21例(23.1%),未发生融合器沉降70例(76.9%)。沉降组合并骨质疏松患者比例显著高于未沉降组[是/否,(9/12)vs(10/60),P=0.005]。两组手术时间、切口长度、术中失血量差异均无统计学意义(P>0.05),但沉降组的终板损伤率显著高于未沉降组[是/否,(3/18)vs(1/69),P=0.012]。术前影像方面,沉降组腰大肌rCSA[(1.5±0.4)vs(1.7±0.5),P=0.038]、椎旁肌CSA[(4530.3±776.6)mm2vs(5000.5±912.8)mm2,P=0.035]、椎旁肌rCSA[(3.0±0.7)vs(3.9±0.8),P<0.001]、椎旁肌r FCSA[(2.3±0.6)vs(2.9±0.7),P<0.001]均显著小于未沉降组,但沉降组椎体CSA显著大于未沉降组[(1547.8±309.9)mm2vs(1321.2±296.0)mm2,P=0.003]。术后影像方面,沉降组PI-LL[(11.7±7.0)°vs(6.4±9.6)°,P=0.022]、即刻SL角[(6.0±3.3)°vs(3.0±3.4)°,P<0.001]、即刻椎间隙高度[(2.9±1.3)mm vs(1.9±1.0)mm,P<0.001]显著大于未沉降组。前者椎间骨融合时间显著晚于后者[(6.7±1.8)个月vs(5.2±1.4)个月,P<0.001]。二元多因素逻辑回归显示,骨质疏松(OR=5.967,P=0.030)、术后即刻椎间隙高度(OR=2.296,P=0.013)、即刻SL(OR=1.256,P=0.041)是融合器沉降的危险因素。而椎旁肌rFCSA(OR=0.525,P=0.048)是融合器沉降的保护因素。[结论]骨质疏松、矫正椎间隙高度过大、SL矫正角度过大、术前椎旁肌rFCSA过小是PLIF术后发生融合器沉降的危险因素。

关键词：腰椎后路椎间融合融合器沉降相关性因素

沉淀分离ICP-OES法测定水质中的重金属

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广州化工 2024年第11期52卷 79-82页

作者：陈凡永侯竹艳张华彭桦云南磷化集团有限公司云南昆明650600 国家磷资源开发利用工程技术研究中心云南昆明650600

以沉淀分离法降低水样中固溶物含量,达到ICP-OES同心型雾化器盐含量(TDS0.999,相对标准偏差(RSD)小于5%,检出限在0.8~9.5μg/L之间,加标回收率≥95%,满足地表水环境质量标准和地下水质量标准的分析要求。

关键词： ICP-OES 水质重金属沉淀分离法

3D-ASL的rCBF max值在儿童后颅窝肿瘤鉴别诊断中的价值

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放射学实践 2024年第4期39卷 523-527页

作者：盛思思邵剑波彭雪华郭豫朱百奇华中科技大学同济医学院附属武汉儿童医院(武汉市妇幼保健院)影像中心/武汉市儿童影像医学临床医学研究中心湖北武汉430016

目的:探讨三维动脉自旋标记成像(3D-ASL)参数rCBF_(max)对儿童后颅窝肿瘤的诊断价值。方法:回顾性分析2018年1月-2022年12月在本院经手术病理证实的52例后颅窝肿瘤患儿的临床和术前MRI资料(平扫、增强和3D-ASL)。其中,髓母细胞瘤28例,... 详细信息

目的:探讨三维动脉自旋标记成像(3D-ASL)参数rCBF_(max)对儿童后颅窝肿瘤的诊断价值。方法:回顾性分析2018年1月-2022年12月在本院经手术病理证实的52例后颅窝肿瘤患儿的临床和术前MRI资料(平扫、增强和3D-ASL)。其中,髓母细胞瘤28例,毛细胞星形细胞瘤11例,室管膜瘤13例。测量肿瘤实性区域的最大脑血流量(CBF_(max))值,并计算最大相对脑血流量(rCBF_(max)=CBF_(max)/CBF_(健侧正常脑灰质))。采用Kruskal-Wallis检验比较3组肿瘤的rCBF_(max)值,采用ROC曲线和约登指数来确定rCBF_(max)鉴别肿瘤病理类型的最佳阈值、敏感度、特异度和曲线下面积(AUC)。结果:室管膜瘤的rCBF_(max)值最高,为1.53(1.27,2.04),毛细胞星形细胞瘤的rCBF_(max)值最低,为0.69(0.56,0.76),髓母细胞瘤的rCBF_(max)值为0.90(0.84,1.00)。三组肿瘤的rCBF_(max)值比较,差异有统计学意义(P<0.001)。ROC曲线分析显示鉴别室管膜瘤与髓母细胞瘤的rCBF_(max)最佳阈值为1.13,相应的诊断敏感度为100%,特异度为82.1%,AUC为90.7%;鉴别髓母细胞瘤与毛细胞星形细胞瘤的rCBF_(max)最佳阈值为0.80,相应的诊断敏感度为85.7%,特异度为100%,AUC为97.1%。结论:3D-ASL定量参数rCBF_(max)对常见儿童后颅窝肿瘤的鉴别诊断具有较高的临床应用价值。

关键词：后颅窝肿瘤儿童动脉自旋标记成像脑血流量磁共振成像

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智能算法在云计算环境下的任务调度方法初探

Co op erative Iterative Learning Control of Linear Multi-agent Systems with a Dynamic Leader under Directed Top ologies

中国科技纵横 2024年第12期 17-19页

作者：彭桦刘妍珺于玺广州铁路职业技术学院运输物流学院广东广州 511300 广州视源创新科技有限公司广东广州 510530

云计算作为一种新的计算模式,能够满足不同业务需求和用户数量变化,将计算和数据资源通过互联网集中共享的方式,按需、灵活、可扩展地交付给企业和用户.在云计算领域研究如何进行高效的任务调度始终是一个焦点问题,算法性能优劣直接影... 详细信息

云计算作为一种新的计算模式,能够满足不同业务需求和用户数量变化,将计算和数据资源通过互联网集中共享的方式,按需、灵活、可扩展地交付给企业和用户.在云计算领域研究如何进行高效的任务调度始终是一个焦点问题,算法性能优劣直接影响任务的执行效率,进而影响用户体验和满意度.因此,本文围绕这个问题分别从云计算任务调度模型和云计算任务调度算法两个方面进行阐述,并总结和展望了云计算环境下任务调度算法在未来的研究工作.

关键词：群智能算法云计算任务调度策略研究

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自动化学报 2014年第11期40卷 2595-2601页

作者： peng Zhou-hua WANG Dan WANG Hao WANG Wei School of Marine Engineering Dalian Maritime University Dalian 116026 China

This paper considers the cooperative tracking of linear multi-agent systems with a dynamic leader whose input information is unavailable to any followers. Cooperative iterative learning controllers, based on the relative state information of neighboring agents, are proposed for tracking the dynamic leader over directed communication topologies. Stability and convergence of the proposed controllers are established using Lyapunov-Krasovskii functionals. Furthermore, this result is extended to the output feedback case where only the output information of each agent can be obtained. A local observer is constructed to estimate the unmeasurable states. Then, cooperative iterative learning controllers, based on the relative observed states of neighboring agents, are devised. For both cases, it is shown that the multi-agent systems whose communication topologies contain a spanning tree can reach synchronization with the dynamic leader, and meanwhile identify the unknown input of the dynamic leader using distributed iterative learning laws. An illustrative example is provided to verify the proposed control schemes.

关键词：迭代学习控制器 Lyapunov-Krasovskii泛函多智能体系统领袖线性多代理系统输出信息未知输入