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湖库型景区生态旅游保育对游客口碑传播意向影响——以福建省水口水电站为例

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武夷学院学报 2024年第4期43卷 39-46页

作者：任柯颖欧华锋查瑞波福建师范大学文化旅游与公共管理学院福建福州350117 智慧旅游福建省高校重点实验室福建福州350117 福建师范大学地理科学学院福建福州350117

生态旅游保育的独特性在于开发与保护并行,符合国家可持续发展的理念。以福建省水口水电站库区为研究对象,采取访谈及问卷调查的方式,从库区生态旅游的视角探究、分析生态旅游保育与游客口碑传播意向之间的关系,以期为湖库型生态旅游保... 详细信息

生态旅游保育的独特性在于开发与保护并行,符合国家可持续发展的理念。以福建省水口水电站库区为研究对象,采取访谈及问卷调查的方式,从库区生态旅游的视角探究、分析生态旅游保育与游客口碑传播意向之间的关系,以期为湖库型生态旅游保育研究提供参考。研究发现,库区生态旅游保育各个维度均对游客满意具有显著影响,对游客口碑传播意向具有一定正向影响;游客口碑传播意向作为中介变量显著影响游客满意。

关键词：生态旅游保育可持续发展库区生态旅游水口水电站口碑传播

Numerical study on transom stern ventilation and resistance of high-speed ship in calm water

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Journal of Hydrodynamics 2022年第5期34卷 864-875页

作者： Hui Wang ren-chuan Zhu Meng-xiao Gu Le zha State Key Laboratory of Ocean Engineering School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Marine Design and Research Institute of China Shanghai200011China

A transom stern is a common design feature for a high-speed *** the present study,the transom stern ventilation of NPL 3b,5b hull is investigated by three methods:H−H formula,Doctors’formula,and computational fluid dynamics(CFD)method at *** the CFD method,the ratios of the wave elevation and wetted area are used to determine the transom *** of results show that Doctors’formula is more accurate to calculate the critical transom draft Froude *** then a Rankine panel method(RPM)based on the high-order boundary element method incorporated the modified transom stern condition is implemented to evaluate the steady wave problem of a high-speed fishery patrol ship in calm ***,free-surface(FS)and double body(DB)simulations based on Star-CCM+are carried out to obtain the wave-making resistance and total *** results of the resistance and wave pattern around the fishery patrol ship computed by RPM show generally good agreement with experimental measurement and CFD *** results indicate that the developed Rankine panel method with transom condition could predict the resistance of high-speed displacement ships with good accuracy.

关键词： Transom ventilation computational fluid dynamics(CFD)method Rankine panel method(RPM) high-speed ship double body simulation resistance

Current trajectory image-based protection algorithm for transmission lines connected to MMC-HVDC stations using CA-CNN

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Protection and Control of Modern Power Systems 2023年第1期8卷 97-111页

作者： Yingyu Liang Yi ren Jinhua Yu Wenting zha School of Mechanical Electronic and Information Engineering China University of Mining and Technology(Beijing) Beijing 100083China

In the presence of an MMC-HVDC system,current differential protection(CDP)has the risk of failure in operation under an internal *** addition,CDP may also incur security issues in the presence of current transformer(CT)saturation and *** this paper,a current trajectory image-based protection algorithm is proposed for AC lines connected to MMC-HVDC stations using a convolution neural network improved by a channel attention mechanism(CA-CNN).Taking the dual differential currents as two-dimensional coordinates of the moving point,the moving-point trajectories formed by differential currents have significant differences under internal and external ***,internal faults can be identified using image recognition based on *** is improved by a channel attention mechanism,data augmentation,and adaptive learning *** comparison with other machine learning algorithms,the feature extraction ability and accuracy of CA-CNN are greatly *** fault conditions like different net-work structures,operation modes,fault resistances,outliers,and current transformer saturation,are fully considered to verify the superiority of the proposed protection *** results confirm that the proposed current trajectory image-based protection algorithm has strong learning and generalizability,and can identify internal faults reliably.

关键词： Channel attention mechanism Convolutional neural network(CNN) Differential current Current trajectory image Modular multilevel converter-based high voltage direct current(MMC-HVDC)

数字普惠金融发展与商业银行竞争之间的关系研究——以京津冀地区为例

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天津商务职业学院学报 2024年第1期12卷 25-32页

作者：张友攀李仁杰查云亮中国农业银行天津市河东支行天津300074

本文选用2011-2021年京津冀地区商业银行机构数据,结合北京大学数字普惠金融指数,分析了京津冀地区数字普惠金融对于银行业竞争的影响。研究表明:京津冀地区数字惠普金融推动了金融市场的发展,对银行业的竞争具有明显促进作用;数字普惠... 详细信息

本文选用2011-2021年京津冀地区商业银行机构数据,结合北京大学数字普惠金融指数,分析了京津冀地区数字普惠金融对于银行业竞争的影响。研究表明:京津冀地区数字惠普金融推动了金融市场的发展,对银行业的竞争具有明显促进作用;数字普惠金融的覆盖广度和使用深度对该地区银行业竞争发挥的作用大于数字化程度;同时对银行业竞争的影响在京津冀三地存在一定的差异性,在北京市和河北省发挥的作用更大,天津市数字普惠金融的作用还有待进一步提升。故此地方政府应强化系统思维,不断深化和鼓励创新金融产品,满足不同行业、不同群体的需求;依托大数据、云计算等进行精准、智能服务;注意与第三方金融科技公司强强联合,提高数字金融的使用效率。

关键词：京津冀数字普惠金融银行业竞争

Improved thermoelectric properties of zone-melted p-type bismuth-telluride-based alloys for power generation

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Rare Metals 2022年第5期41卷 1490-1495页

作者： ren-Shuang zha. Tie-Jun Zhu State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang University.Hangzhou 310027China Thermoelectricity Technology Center Hangzhou Dahe Thermo-Magnetics Co.LtdHangzhou 310053China

Zone-melted bismuth-telluride-based alloys(ZM-BT) are extensively applied to manufacture commercial thermoelectric power generators(TEG). Optimizing the average figure of merit(zT) during 300–500 K of ZM-BT is favora... 详细信息

关键词： alloys bismuth power

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大寨水库坝体填筑排水带料碾压试验成果分析

四川水利 2024年第2期45卷 103-106页

作者：王涛任国榕张新标查静中水君信工程勘察设计有限公司成都610073

为确保大寨水库坝体填筑排水带料的可靠性,综合确定合理的坝料碾压工艺和碾压参数,工程现场采用自行式光面碾开展了系列试验。结果表明:(1)第二次碾压试验产生的破碎料颗粒级配均连续,颗粒坚硬,满足坝体排水带强透水的设计原则和填筑要... 详细信息

为确保大寨水库坝体填筑排水带料的可靠性,综合确定合理的坝料碾压工艺和碾压参数,工程现场采用自行式光面碾开展了系列试验。结果表明:(1)第二次碾压试验产生的破碎料颗粒级配均连续,颗粒坚硬,满足坝体排水带强透水的设计原则和填筑要求;(2)坝料干密度与设计指标基本相符,适当厚度的级配料经过一定遍数碾压后可以达到设计要求的干密度;(3)施工中应适当降低<10 mm的颗粒含量,保证碾压后排水带料干密度不低于2.05 g/cm ^(3),渗透系数大于1×10^(-2)。说明坝体排水带料的填筑设计是合理的。

关键词：大寨水库排水带料干密度碾压试验渗透系数

Multiple Episodes of Zircon Growth during Anatectic Metamorphism of Metasedimentary Rocks in Collisional Orogens:Constraints from Felsic Granulites in the Bohemian Massif

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Journal of Earth Science 2023年第3期34卷 609-639页

作者： Guang yang ren-Xu Chen Yong-Fei Zheng Qiong-Xia Xia Yong-Jie Yu Kun Li zha.chu Hu Bing Gong Xiang-Ping zha CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Center of Excellence for Comparative Planetology Chinese Academy of Sciences(CAS)Hefei 230026China Frontiers Science Center for Planetary Exploration and Emerging Technologies University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Geological Processes and Mineral Resources Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430078China

Zircon is a key accessary mineral for metamorphic geochronology and geochemical tracing,but it has been a challenge to interpret its complex chemical zoning and age record acquired during multiple episodes of anatectic metamorphism in collisional *** is illustrated by a combined study of petrography,phase equilibrium modeling and metamorphic P-T-t determination for granulites from the Bohemian Massif in the Variscan *** rocks record multiple episodes of zircon growth during anatectic *** started from the compressional heating for prograde metamorphism to high-pressure(HP)to ultrahigh-pressure(UHP)eclogite facies with low degrees of partial ***,they underwent a decompressional stage from UHP eclogite facies to HP granulite facies for dehydration *** were followed by a further decompressional stage either to kyanite granulite facies or to sillimanite granulite facies at ultrahigh-temperature(UHT)*** of zircon growth are linked to specific metamorphic conditions for peritectic reactions on the basis of zoning patterns,trace element signatures,index mineral inclusions in dated domains and textural relationships to coexisting *** results indicate that relict zircon domains are preserved even at UHT granulite facies conditions.A few zircon domains in the kyanite granulite grew during the prograde to peak UHP metamorphism,possibly corresponding to consumption of biotite and plagioclase but growth of *** the decompressional exhumation to the HP granulite-facies,relict or prograde zircon domains were mostly dissolved into anatectic melts produced by muscovite *** zircon grains grew during this transition to the HP granulite-facies in the kyanite granulite and are chemically related to continuous growth of garnet,whereas abundant zircon grains grew subsequently at the UHT granulite facies in the sillimanite granulite and are chemically related to garnet breakdown reactions.A

关键词： ultrahigh-pressure metamorphism ultrahigh-temperature metamorphism felsic granulite zircon continental collision crustal anataxis

糖尿病足溃疡患者住院时间延长风险预测模型构建及验证

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四川大学学报（医学版） 2024年第4期55卷 972-979页

作者：王冰雪林婷吴静龚洪平任妍查盼盼陈利鸿刘关键陈大伟王椿冉兴无四川大学华西医院内分泌代谢科糖尿病足诊治中心成都610041 四川大学华西医院全科医学中心成都610041 四川大学华西医院中国循证医学中心成都610041

目的探究糖尿病足溃疡(diabetic foot ulcers, DFU)患者住院时间延长的危险因素,构建预测模型并进行内部验证。方法回顾性收集2012年1月–2022年12月四川大学华西医院收治的住院DFU患者临床资料,并以7∶3随机拆分数据分配至训练队列... 详细信息

目的探究糖尿病足溃疡(diabetic foot ulcers, DFU)患者住院时间延长的危险因素,构建预测模型并进行内部验证。方法回顾性收集2012年1月–2022年12月四川大学华西医院收治的住院DFU患者临床资料,并以7∶3随机拆分数据分配至训练队列与验证队列,将住院时间≥上四分位数确定为住院时间延长,采用训练队列分析其危险因素并建立风险预测模型,应用验证队列对模型进行验证。结果共纳入住院DFU患者967例,其中245例患者住院时间延长。训练队列共676例,验证队列291例。多因素logistic回归分析显示,吸烟史[比值比(odds ratio, OR)=1.67,95%置信区间(confidence interval, CI)(1.13,2.48),P=0.010]、Wagner分级≥3[OR=7.13,95%CI (3.68,13.83), P<0.001]、中足溃疡[OR=1.99,95%CI (1.07,3.72),P=0.030]、后足溃疡[OR=3.68,95%CI (1.83,7.41),P<0.001]、多部位溃疡[OR=2.91,95%CI (1.80, 4.69),P<0.001]、溃疡面积≥3 cm^(2)[OR=2.00,95%CI (1.28,3.11),P=0.002]、白细胞计数[OR=1.11, 95%CI(1.05,1.18),P<0.001]是DFU患者住院时间延长的危险因素。基于危险因素构建列线图,训练队列和验证队列受试者工作特征曲线的曲线下面积分别为0.782 (95%CI 0.745,0.820)及0.756 (95%CI 0.694,0.818),校准曲线显示预测概率与实际概率具有较高的一致性。结论吸烟史,Wagner分级≥3,中、后足及多部位溃疡,溃疡面积≥3 cm^(2),以及白细胞计数升高是DFU患者住院时间延长的危险因素,临床医师应加强对患者全面评估,采取合理诊疗措施以缩短住院时间。

关键词：糖尿病足溃疡住院时间延长风险预测模型内部验证

文化语言学视野下的《台北人》亲属称谓语研究

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铜陵职业技术学院学报 2024年第2期23卷 83-88页

作者：查方圆田家源安徽师范大学安徽芜湖241000

《台北人》中的亲属称谓语具有系统多样、南腔北调等特点。与此同时,称谓语在塑造人物形象、揭示人物关系、凸显作品主题等方面有重要意义。运用文化语言学相关理论知识,对作品中亲属称谓语的特点及其背后所蕴含的中华传统文化因素进行... 详细信息

《台北人》中的亲属称谓语具有系统多样、南腔北调等特点。与此同时,称谓语在塑造人物形象、揭示人物关系、凸显作品主题等方面有重要意义。运用文化语言学相关理论知识,对作品中亲属称谓语的特点及其背后所蕴含的中华传统文化因素进行深入考察,为《台北人》的语言学研究提供了新视角,也有助于提高人们日常口语交际的效果。

关键词：《台北人》亲属称谓语文化语言学