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空间叙事下的《徐霞客游记》文学制图可视化初探——以滇中地区景观资源为例

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南方建筑 2024年第6期 21-31页

作者：徐娅婷叶山渠王燚宋钰红西南林业大学园林园艺学院国家林业与草原局西南风景园林工程技术研究中心

随着数字化时代的来临,将古籍经典以更简便的形式呈现在大众面前变得至关重要,在传承与发扬的同时也能构建现代化的数字资源。《徐霞客游记》是极为重要的历史散文游记,以其中《滇游日记》的滇中地区的景观资源为研究对象,首先通过Googl... 详细信息

随着数字化时代的来临,将古籍经典以更简便的形式呈现在大众面前变得至关重要,在传承与发扬的同时也能构建现代化的数字资源。《徐霞客游记》是极为重要的历史散文游记,以其中《滇游日记》的滇中地区的景观资源为研究对象,首先通过Google Earth Pro及GIS构建出徐霞客在滇中地区的游踪数据库;其次结合空间叙事理论,以文学制图的形式得出所有游踪点位的密集程度、游览线路、游踪类型以及游踪地的人文、自然风貌。通过将《徐霞客游记》中的滇中地区景观资源进行可视化分析,有助于更好地保存《徐霞客游记》,为后续构建徐霞客之路、徐霞客文化旅游区等提供思路。

关键词：《徐霞客游记》空间叙事滇中地区文学制图景观资源数字人文

Unsupervised Cross-Media Hashing Learning via Knowledge Graph

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Chinese Journal of Electronics 2022年第6期31卷 1081-1091页

作者： ye Zhaoda HE Xiangteng PENG Yuxin Wangxuan Institute of Computer Technology Peking University

With the rapid growth of multimedia data, cross-media hashing has become an important technology for fast cross-media retrieval. Because the manual annotations are difficult to obtain in real-world application, unsupervised cross-media hashing is studied to address the hashing learning without manual *** unsupervised cross-media hashing methods generally focus on calculating the similarities through the features of multimedia data, while the learned hashing code cannot reflect the semantic relationship among the multimedia data, which hinders the accuracy in the cross-media retrieval. When humans try to understand multimedia data, the knowledge of concept relations in our brain plays an important role in obtaining high-level *** by this, we propose a knowledge guided unsupervised cross-media hashing(KGUCH) approach, which applies the knowledge graph to construct high-level semantic correlations for unsupervised cross-media hash *** contributions in this paper can be summarized as follows: 1) The knowledge graph is introduced as auxiliary knowledge to construct the semantic graph for the concepts in each image and text instance, which can bridge the multimedia data with high-level semantic correlations to improve the accuracy of learned hash codes for crossmedia retrieval. 2) The proposed KGUCH approach constructs correlation of the multimedia data from both the semantic and the feature aspects, which can exploit complementary information to promote the unsupervised cross-media hash learning. The experiments are conducted on three widely-used datasets, which verify the effectiveness of our proposed KGUCH approach.

关键词： Cross-media hashing Knowledge graph Unsupervised learning

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基于开关电容的单输入升压型七电平逆变器

电源学报 2024年第2期22卷 113-120页

作者：张国鑫陈仕铠叶远茂广东工业大学自动化学院广州510006

针对现有多电平逆变器存在拓扑结构复杂、开关器件总电压应力高和串联电容电压不平衡的问题,提出了一种新型的开关电容七电平逆变器。通过同相层叠脉宽调制策略,合理地控制开关管使得三个电容器与直流电源串并联分时运行,实现了三倍升... 详细信息

针对现有多电平逆变器存在拓扑结构复杂、开关器件总电压应力高和串联电容电压不平衡的问题,提出了一种新型的开关电容七电平逆变器。通过同相层叠脉宽调制策略,合理地控制开关管使得三个电容器与直流电源串并联分时运行,实现了三倍升压增益的七电平输出。该逆变器采用单个直流输入电源,不仅具有结构简单、器件少、升压能力强和电容电压自平衡等优势,并且负载端不采用逆变H桥来改变输出电平极性,从而降低开关器件的总电压应力。分析了逆变器的拓扑结构、工作原理、电容电压自平衡、调制策略、电容参数和电流应力,并从开关管数量、二极管数量、电容数量、总开关电压应力和升压增益5个方面与现有拓扑进行了比较分析,充分证明所提拓扑的实用性。最后实验结果验证了该拓扑的可行性。

关键词：多电平逆变器开关电容电压自平衡脉宽调制

用户需求驱动下的女性口红外包装设计路径研究

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包装工程 2024年第14期45卷 298-307页

作者：秦崇伟罗沛霖赵项胡晔燕山大学河北秦皇岛066004 滇西应用技术大学珠宝学院云南腾冲679100

目的针对我国女性口红外包装存在的问题,提出一种集成Kano-AHP-TOPSIS模型的口红外包装设计路径。方法首先,以口红外包装为研究对象,通过对女性消费者进行多渠道调研,成功获取十六项口红外包装用户需求,并运用Kano模型对其进行属性划分... 详细信息

目的针对我国女性口红外包装存在的问题,提出一种集成Kano-AHP-TOPSIS模型的口红外包装设计路径。方法首先,以口红外包装为研究对象,通过对女性消费者进行多渠道调研,成功获取十六项口红外包装用户需求,并运用Kano模型对其进行属性划分;其次,引入AHP法构建用户需求层次分析模型,通过运算求解各层级需求权重,提出三款口红外包装设计方案;最后,运用TOPSIS法对三款设计方案及评价样本进行综合评价,结果表明,基于Kano-AHP-TOPSISI所构思的三款口红外包装设计均优于现有的口红外包装设计。结论集成Kano-AHP-TOPSIS模型在女性口红外包装研发过程中可合理划分用户需求属性、科学求解各属性需求权重、客观评价设计方案,该设计路径指导女性口红外包装设计具有可行性,可为同类女性化妆品包装设计提供参考和思路。

关键词：用户需求女性口红外包装设计路径 Kano-AHP-TOPSIS模型

Age and petrogenesis of late Mesozoic intrusions in the Huoluotai porphyry Cu-(Mo)deposit,northeast China:Implications for regional tectonic evolution

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Geoscience Frontiers 2022年第2期13卷 311-332页

作者： Yong-gang Sun Bi-le Li Zhong-hai Zhao Feng-yue Sun Qing-feng Ding Xu-sheng Chen jie-biao Li ye Qian Yu-jin Li College of Earth Sciences Jilin UniversityChangchun 130061China College of Mining Liaoning Technical UniversityFuxin 123000China Qiqihaer Institute of Geological Exploration Heilongjiang 161006China School of Environment Harbin Institute of TechnologyHarbin 150090China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and ResourcesChangchun 130061China

Multi-stage igneous rocks developed in the recently discovered Huoluotai Cu-(Mo)deposit provide new insights into the controversial late Mesozoic geodynamic evolution of the northern segment of the Great Xing’an Range(NSGXR).Zircon U-Pb dating suggests that the monzogranite,ore-bearing granodiorite porphyry,diorite porphyry,and granite porphyry in the deposit were emplaced at 179.5±1.6,148.9±0.9,146.1±1.3,and 142.2±1.5 Ma,*** Re-Os dating of molybdenite yielded an isochron age of 146.9±2.3 Ma(MSWD=0.27).The Jurassic adakitic monzogranite and granodiorite porphyry are characterized by high SiO_(2)and Na_(2)O contents,low K_(2)O/Na_(2)O ratios,low Mg O,Cr,and Ni contents,low zirconεHf(t)values relative to depleted mantle,and relatively high Th *** were produced by partial melting of a subducted oceanic slab,with involvement of marine sediments in the magma source and limited interaction with mantle peridotites during magma *** Late Jurassic diorite porphyry is characterized by moderate SiO_(2) contents,high Mg O,Cr,and Ni contents,and positive dominatedεHf(t)values,indicating it was produced by partial melting of a subduction-modified lithospheric mantle wedge and underwent limited crustal contamination during magma *** early Early Cretaceous adakitic granite porphyry shows high SiO_(2) and K_(2)O contents and K_(2)O/Na_(2)O ratios,low Mg O,Cr,and Ni contents,enriched Sr-Nd isotopic compositions,and slightly positive zirconεHf(t)values,suggesting it was produced by partial melting of thickened mafic lower *** NSGXR experienced a tectonic history that involved flat-slab subduction(200-160 Ma),and tearing and collapse(150-145 Ma)of the Mongol-Okhotsk oceanic *** period of magmatic quiescence from ca.160 to 150 Ma was a response to flat-slab subduction of the Mongol-Okhotsk oceanic *** thickening in the NSGXR(145-133 Ma)was due to the collision between the Amuria Block and the Siberian Craton.

关键词： Geochemistry Zircon U-Pb dating Huoluotai Cu-(Mo)deposit Flat-slab subduction Mongol-Okhotsk Ocean

成人Meckel憩室40例临床特征与诊断方法分析

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中华全科医师杂志 2024年第4期23卷 379-383页

作者：周艳华王继龙刘揆亮宗晔首都医科大学附属北京友谊医院消化内科、国家消化系统疾病临床医学研究中心北京100050

目的分析成人Meckel憩室的临床特征,并探讨不同影像学和内镜检查方法对成人Meckel憩室术前诊断的价值。方法该研究为回顾性研究。回顾分析2013年1月至2023年10月于首都医科大学附属北京友谊医院确诊的成人Meckel憩室患者的临床表现、诊... 详细信息

目的分析成人Meckel憩室的临床特征,并探讨不同影像学和内镜检查方法对成人Meckel憩室术前诊断的价值。方法该研究为回顾性研究。回顾分析2013年1月至2023年10月于首都医科大学附属北京友谊医院确诊的成人Meckel憩室患者的临床表现、诊断方法、治疗情况和病理结果。结果共40例患者,男性32例(80.0%),女性8例(20.0%),男女比例为4∶1,中位年龄39岁。因消化道出血、腹痛就诊者和无症状者分别占52.5%(21/40)、12.5%(5/40)和35.0%(14/40)。其中因消化道出血就诊者病程0~13年,最低血红蛋白水平为(67±14)g/L,47.6%(10/21)的患者曾输注同型悬浮红细胞治疗。腹部CT、血管造影、核素异位胃黏膜显像和核素锝标记红细胞出血显像等检查的术前诊断阳性率分别为2.6%(1/39)、0(0/7)、3/7和2/4;胶囊内镜和经肛单气囊小肠镜的诊断率分别为1/12和85.0%(17/20)。34例患者经外科手术成功治疗,术中显示憩室距回盲瓣距离20~170 cm;术后病理活组织检查结果均符合小肠憩室改变,其中7例(23.5%)病理结果显示存在异位胃黏膜,2例(5.9%)显示存在异位胰腺组织。结论成人Meckel憩室男性患者居多,多以消化道出血首发,经肛小肠镜检查诊断阳性率最高,手术是推荐治疗方法。

关键词：美克尔憩室 99m锝高锝酸钠胃黏膜单气囊小肠镜检查

Engineering morphologies of yttrium oxide supported nickel catalysts for hydrogen production

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Rare Metals 2023年第1期42卷 176-188页

作者： Rong-Bin Zhang Zi-Ao Tu Shuai Meng Gang Feng Zhang-Hui Lu Ying-Zhi Yu Tomas Ramirez Reina Fei-Yang Hu Xiao-Han Chen Run-ping ye Key Laboratory of Jiangxi Province for Environment and Energy Catalysis Institute of Applied ChemistrySchool of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031China Chemistry Examination Department Patent OfficeChina National Intellectual Property AdministrationBeijing100088China College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang330022China Department of Chemical and Process Engineering University of SurreyGuildfordGU27XHUK Department of Inorganic Chemistry and Materials Sciences Institute University of Seville-CSICSeville41092Spain

The catalytic performance is highly related to the catalyst ***,a series of Ni nanoparticles supported on Y_(2)O_(3) with different morphologies were successfully synthesized via hydrothermal process screening different pH *** Ni/Y_(2)O_(3)catalysts were applied to efficiently produce CO_(x)-free H2through ammonia *** identify a significant impact of Y_(2)O_(3)supports on nickel nanoclusters sizes and *** experimental results show that Ni/Y11 catalyst achieves 100% ammonia decomposition conversion under a gas hour space velocity(GHSV) of 12,000 ml·h^(-1)·gcat^(-1) and temperature of 650℃.Such a high level of activity over Ni/Y11 catalyst was attributed to a large specific surface area,appropriate alkalinity,and small Ni nanoparticles diameter with high dispersion.

关键词： Ammonia decomposition Hydrogen production Yttrium oxide morphology Ni catalysts Hydrothermal method

施氮与pH处理对尾巨桉-降香黄檀间作体系幼苗生长的影响

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林草资源研究 2024年第1期 111-124页

作者：吴昊邓家珍何雅琴林铭业叶绍明广西大学林学院南宁530004 广西高校亚热带人工林培育与利用重点实验室南宁530004 广西森林生态与保育重点实验室南宁530004

探讨豆科树种降香黄檀与桉树间作体系下根瘤与幼苗生长生理对不同施氮处理与pH环境的响应,为探索高效生物固氮的桉树人工林可持续经营模式提供科学依据。采用盆栽可控实验模拟尾巨桉-降香黄檀间作体系;采用双因素完全随机区组设计,氮素... 详细信息

探讨豆科树种降香黄檀与桉树间作体系下根瘤与幼苗生长生理对不同施氮处理与pH环境的响应,为探索高效生物固氮的桉树人工林可持续经营模式提供科学依据。采用盆栽可控实验模拟尾巨桉-降香黄檀间作体系;采用双因素完全随机区组设计,氮素及pH分别设置N1,N2,N3,N4及pH4.5,pH5.5,pH7.5,pH9.5各4个浓度梯度处理。结果表明:1)在N2与N3施氮处理下,降香黄檀的结瘤能力被显著抑制(P<0.05),而N1处理幼苗根系结瘤能力与对照组(CK)无显著差异,且均在pH7.5处理下根系结瘤能力最强;2)尾巨桉的生物量与光合指标随施氮量的增加而提高。除pH9.5处理外,降香黄檀的生物量与光合指标随施氮量的增加呈现出先增加后减少的趋势;3)施氮后降香黄檀与尾巨桉的叶片的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)、硝酸还原酶(NR)含量均有提高,而丙二醛(MDA)含量表现相反趋势;4)除N3处理外,降香黄檀与尾巨桉幼苗在pH5.5处理下的生物量均大于pH4.5和pH9.5处理下的;5)冗余分析的结果表明,间作体系下,降香黄檀的结瘤能力会受到降香黄檀生理状况与尾巨桉生物量的限制。综上,适量氮添加与土壤pH处理调节有益于降香黄檀与尾巨桉幼苗在该体系中的共同发育。

关键词：尾巨桉降香黄檀根瘤生长生理间作

Natural dynamic characteristics of a circular cylindrical Timoshenko tube made of three-directional functionally graded material

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Applied Mathematics and Mechanics(English Edition) 2022年第4期43卷 479-496页

作者： ye TANG Jiye XU Tianzhi YANG School of Mechanical Engineering Anhui Polytechnic UniversityWuhu 241000Anhui ProvinceChina Department of Mechanics Tianjin UniversityTianjin 300350China School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China

The natural dynamic characteristics of a circular cylindrical tube made of three-directional(3 D)functional graded material(FGM)based on the Timoshenko beam theory are ***’s principle is utilized to derive the novel motion equations of the tube,considering the interactions among the longitudinal,transverse,and rotation *** dint of the differential quadrature method(DQM),the governing equations are discretized to conduct the analysis of natural dynamic *** Ritz method,in conjunction with the finite element method(FEM),is introduced to verify the present *** is found that the asymmetric modes in the tube are controlled by the 3 D FGM,which exhibit more complicated shapes compared with the unidirectional(1 D)and bi-directional(2 D)FGM *** examples illustrate the effects of the axial,radial,and circumferential FGM indexes as well as the supported edges on the natural dynamic characteristics in *** is notable that the obtained results are beneficial for accurate design of smart structures composed from multi-directional FGM.

关键词： circular cylindrical tube three-directional(3D)functionally graded material(FGM) asymmetric mode natural dynamic characteristic differential quadrature method(DQM)