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Chinese Chemical Letters 2023年第1期34卷 133-138页

作者： Xiaohua Deng zhu jiang Yingying Chen Dai Dang Quanbing Liu Xiaoyang Wang Xu Yang School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Department of Chemical Systems Engineering Graduate School of EngineeringNagoya UniversityFuro-choChikusa-kuNagoya 464-8603Japan

Heteroatom doped porous carbon materials have emerged as essential cathode material for metal-air battery systems in the context of soaring demands for clean energy conversion and storage.Herein,a three-dimensional nitrogen-doped carbon self-supported electrode(TNCSE)is fabricated through thermal treatment and acid activation of raw wood.The resulting TNCSE retains the hierarchical porous architecture of parent raw lumber and holds substantial defect sites and doped N sites in the carbon skeleton.Assembled as a cathode in the rechargeable zinc-air battery,the TNCSE exhibits a superior peak power density of 134.02 m W/cm^(2)and an energy density of 835.92 m Ah/g,significantly exceeding the ones reference commercial 20%Pt/C does.More strikingly,a limited performance decay of 1.47%after an ultra long-period(500 h)cycle is also achieved on the TNCSE.This work could offer a green and cost-save approach for rationally converting biomass into a robust self-supporting cathode material for a rechargeable zinc-air battery.

关键词： Carbon sheet Hierarchical porous structure Metal-free Zinc-air batteries Long-life stability

Paleo-to Mesoproterozoic Tectono-Magmatic Events Recorded in the Huwan Complex from the Dabie Orogen,Central China:Evidence from Petrology and U-Pb Geochronology

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Acta Geologica Sinica(English Edition) 2023年第4期97卷 1150-1162页

作者： zhu jiang CHEN Yuqiong CHEN Chao LI Zhanke SHI Xianbin CHEN Song ZOU Yuanbing College of Resources and Environment Yangtze UniversityWuhan 430100China Hubei Key Laboratory of Petroleum Geochemistry and Environment Yangtze UniversityWuhan 430100China Hubei Geological Survey Wuhan 430034China Hubei Key Laboratory of Resources and Eco-environment Geology(Hubei Geological Bureau) Wuhan 430034China School of Earth Resources China University of GeosciencesWuhan 430074China Sixth Geological Brigade Hubei Geological BureauXiaoganHubei 432000China

To better understand the Paleo-to Mesoproterozoic tectonic evolution of the Dabie Orogen in the northern margin of Yangtze Block,we present geochronological data for metasedimentary and metavolcanic rocks in the Huwan complex.A total of 385 detrital zircon LA-ICP-MS analyses for metasedimentary rocks yielded three^(207)Pb/^(206)Pb age populations:1.50-1.80 Ga,1.81-1.87 Ga and 1.93-2.0 Ga,providing a maximum depositional timing of ca.1.50 Ga;while metafelsic volcanic gneisses yielded protolith U-Pb ages of 1893±54 Ma.The peak ages are remarkably consistent with the tectonothermal events that occurred in the northern Yangtze Block,indicating the presence of Paleo-to Mesoproterozoic magmatism in the Dabie Orogen.The age range of 1.93-2.0 Ga correlates with the Paleoproterozoic collision;the age range of 1.81-1.87 Ga coincides with the period of the post-orogenic extension;and the age range of 1.50-1.80 Ga is interpreted to associate with an extensional regime.Zircon cores with age of 1732-1965 Ma haveε_(Hf)(t)values ranging from-11.70 to-2.47,indicating that juvenile crust involved in their magma sources.Owing to the similar age spectra,we proposed that the nucleus of the Dabie Orogen was close to the Yangtze Block since the Paleoproterozoic.The Huwan complex has an intimate affiliation to the Yangtze Block,and implies multiple orogenic cycles.It was not only experienced the Paleo-Tethys ocean subduction and collision,but also recorded Paleo-to Mesoproterozoic tectono-magmatic events in the Dabie Orogen.

关键词： geochronology detrital zircon Huwan complex Precambrian Yangtze block

Litter Productivity and Nutrient Return Characteristics of Three Typical Forest Stands in Golden Mountain

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Open Journal of Applied Sciences 2024年第2期14卷 353-370页

作者： Fengchen Yan jiang zhu Juyang Wu Jinshi Chen Zijun Tian School of Forestry and Horticulture Hubei Minzu University Enshi China Agriculture and Rural Affairs Bureau of Enshi Tujia and Miao Autonomous Prefecture Enshi China

Objective: The paper aims to analyze the dynamic characteristics of litter production and nutrient return of the forest ecosystems in subtropical areas, and provide a theoretical basis for the nutrient cycling study in southwest Hubei Province and carbon sink function of the whole forest ecosystem. Methods: Three typical forest stands (Chinese fir plantation, Cryptomeria fortunei plantation and evergreen and deciduous broad-leaved mixed forest) in Golden Mountain Forest Farm in southwest Hubei Province were investigated and monitored continuously for the litter types and productivity and nutrient return. Results: The annual litter productivity of the three forest stands ranged from 161.77 to 396.26 kg·hm-2;Litters of branches, leaves and reproductive organs accounted for 14.14% - 20.85%, 33.26% - 78.33%, 7.52% - 42.18% of the total, respectively;The litter productivity and total litter productivity of each composition in the three forest stands show unimodal or bimodal changes over months, and the total litter productivity reached the highest value in January, April and October respectively. For different nutrient contents of the three forest stands, the common feature is C > N. The order of nutrient return amount from greatest to least is evergreen and deciduous broad-leaved mixed forest, Cryptomeria fortunei plantation and Chinese fir plantation. For different nutrient return amounts, the common feature is C > N, and the nutrient return amounts are 76.51-180.69 kg·hm-2 and 2.3 - 5.71 kg·hm-2 respectively. Conclusion: The annual litter productivity and nutrient return amount of the evergreen and deciduous broad-leaved mixed forest are the highest among the three forest stands. Therefore, protecting the evergreen and deciduous broad-leaved mixed forest and studying the litter changes of Chinese fir plantation and Cryptomeria fortunei plantation are of far-reaching significance for the development of sustainable forest management in this region and the further improvement of the ca

关键词： Golden Mountain Litter Productivity Nutrient Return Amount Nutrient Content

维普期刊数据库评论

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基于SCMA的无人机中继辅助上行通信方案

重庆邮电大学学报（自然科学版） 2024年第3期36卷 409-419页

作者：杨爽朱江重庆邮电大学通信与信息工程学院重庆400065

为提高蜂窝通信系统的上行总吞吐量,在满足用户服务质量需求的前提下,提出了一种基于稀疏码多址接入(sparse code multiple access,SCMA)的无人机中继辅助上行通信方案,通过部署无人机增强网络覆盖,并利用SCMA提高系统传输性能。根据用... 详细信息

为提高蜂窝通信系统的上行总吞吐量,在满足用户服务质量需求的前提下,提出了一种基于稀疏码多址接入(sparse code multiple access,SCMA)的无人机中继辅助上行通信方案,通过部署无人机增强网络覆盖,并利用SCMA提高系统传输性能。根据用户的分布和概率视距传输模型,通过交替优化码本、功率和无人机坐标,确定无人机的3维部署位置;进行资源优化后,根据信道状态信息,对子载波进行配对并迭代码本、功率,以获得优化的码本和功率分配方案。仿真结果表明,提出的方案能够有效提高上行吞吐量,并满足用户的服务质量需求。

关键词：无人机3维部署稀疏码多址接入资源分配中继通信

论音乐教育评价范式中科学主义与人文主义的离散和耦合

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中国音乐 2024年第3期 46-46,159,47-56页

作者：朱玉江安徽师范大学音乐学院

教育评价范式的选择及其运用,关乎学校教育改革的发展路向和成效。当下普通学校音乐教育的评价之中,科学主义范式居于主导地位,表现为评价价值的工具化、评价内容的知识化和情境无涉化、评价方法的实证化、评价标准的一元化。21世纪以来... 详细信息

教育评价范式的选择及其运用,关乎学校教育改革的发展路向和成效。当下普通学校音乐教育的评价之中,科学主义范式居于主导地位,表现为评价价值的工具化、评价内容的知识化和情境无涉化、评价方法的实证化、评价标准的一元化。21世纪以来,课程改革呈现人文主义教育评价范式倾向,因此有必要厘清音乐教育评价范式的科学主义与人文主义的关系。具言之,坚持辩证地认识二者的各自优势、局限及适用范围,进而确保评价中工具理性与价值理性的互补共融、结果与过程的动静交融、量化与质性的协同并举、显性知识与默会知识的融合共生。如此,便可从科学主义与人文主义的离散对立,走向耦合互补的新态势,从而归正学校音乐教育评价发展路向。

关键词：音乐教育评价范式科学主义人文主义离散耦合

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财政扶持何以提升返乡创业者创新精神?

经济与管理研究 2024年第3期45卷 43-58页

作者：姜竹张丽王轶北京工商大学经济学院北京100048

本文选取2019年全国2139家返乡创业企业的调查数据,运用有序评定模型和中介效应模型,研究财政扶持对返乡创业者创新精神的影响和作用机制。研究结果表明,财政扶持能够促进返乡创业者创新精神的产生,其中技能培训可以培育返乡创业者的创... 详细信息

本文选取2019年全国2139家返乡创业企业的调查数据,运用有序评定模型和中介效应模型,研究财政扶持对返乡创业者创新精神的影响和作用机制。研究结果表明,财政扶持能够促进返乡创业者创新精神的产生,其中技能培训可以培育返乡创业者的创新精神,税收减免、土地优惠和产业扶贫可以激发返乡创业者的创新精神。机制分析结果表明,财政扶持能够通过优化外部营商环境,有效激发返乡创业者的创新精神。异质性分析结果表明,相较于东西部地区、第一二产业、中低端第三产业和生存型返乡创业者,财政扶持对中部地区、高端第三产业及发展型返乡创业者创新精神的激发效果更明显。因此,加大对返乡创业者的扶持力度、优化外部营商环境、制定差异化的扶持政策,将有利于进一步激发返乡创业者的创新精神。

关键词：乡村振兴财政扶持营商环境返乡创业创新精神

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基于稀疏矩阵结构的特征选择算法现状研究

信息网络安全 2024年第3期24卷 352-362页

作者：钟静方冰朱江中国人民解放军陆军指挥学院南京211899

在信息时代,数据获取方式简单快捷,使得数据量呈指数型增长。然而这些数据往往是多源高维的,增加了模型的复杂度,容易造成模型过拟合,并且数据中存在的冗余特征会降低模型分类精度。特征选择算法旨在通过去除不相关、冗余或嘈杂的特征,... 详细信息

在信息时代,数据获取方式简单快捷,使得数据量呈指数型增长。然而这些数据往往是多源高维的,增加了模型的复杂度,容易造成模型过拟合,并且数据中存在的冗余特征会降低模型分类精度。特征选择算法旨在通过去除不相关、冗余或嘈杂的特征,从原始特征中选择一小部分最有效特征,达到降维的效果。目前特征选择算法种类繁多,其中,基于稀疏矩阵结构的特征选择算法由于具有模型简单易懂和易求解的特点而被学者们广泛关注。本文归纳总结了基于稀疏矩阵结构的特征选择算法分类,重点介绍了鲁棒特征选择模型和多视图特征选择模型。首先,介绍了基于稀疏矩阵结构的特征选择算法基本框架;然后,介绍了基于稀疏矩阵结构的一般模型、鲁棒特征选择模型、多视图的特征选择模型,比较了它们在解决目前特征选择算法研究难点中存在的优势和不足;最后,对基于稀疏矩阵结构的特征选择算法进行了总结。文章阐明了理论研究中存在的问题和难点,探讨了基于稀疏矩阵结构的特征选择算法发展思路。

关键词：稀疏矩阵结构特征选择降维分类

基于fsQCA的国产服装品牌忠诚提升路径研究

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毛纺科技 2024年第2期52卷 93-102页

作者：姜铸储鹏西安工程大学管理学院陕西西安710048

为探究中国服装企业维护和提升消费者品牌忠诚的方式,以京东平台上30个国产服装品牌为案例,在收集商品评论并对其进行文本分析的基础上,运用模糊集定性比较分析(fsQCA)方法,探究国产服装企业维护和提升品牌忠诚的多种因素组合路径。研... 详细信息

为探究中国服装企业维护和提升消费者品牌忠诚的方式,以京东平台上30个国产服装品牌为案例,在收集商品评论并对其进行文本分析的基础上,运用模糊集定性比较分析(fsQCA)方法,探究国产服装企业维护和提升品牌忠诚的多种因素组合路径。研究结果表明,国产服装企业品牌忠诚的提升是多因素组态作用的结果,产生高品牌忠诚的7条路径可以归纳为5种模式,分别为质量领先+影响力型、质量领先+情感驱动型、情感驱动+社会责任感型、质量领先+在线社群运营型、品牌形象+价值让渡型。在此结论的基础上提出服装企业应注重生产制造能力提升、积极履行社会责任以及要以满足消费者需求为中心等建议,为国产服装企业提供了理论和实践启示。

关键词：品牌忠诚 fsQCA方法国产服装品牌顾客价值品牌形象

An Incursion of Off-Equatorial Subsurface Cold Water and Its Role in Triggering the “Double Dip” La Nia Event of 2011

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Advances in Atmospheric Sciences 2015年第6期32卷 731-742页

作者： ZHENG Fei FENG Lisha zhu jiang International Center for Climate and Environment Science Institute of Atmospheric PhysicsChinese Academy of Sciences College of Atmospheric Sciences Chengdu University of Information Technology

Based on Global Ocean Data Assimilation System （GODAS） and NCEP reanalysis data, atmospheric and oceanic pro- cesses possibly responsible for the onset of the 2011/12 La Nifia event, which followed the 2010/11 La Nifia even--referred to as a ＂double dip＂ La Nifia--are investigated. The key mechanisms involved in activating the 2011/12 La Nifia are illus- trated by these datasets. Results show that neutral conditions were already evident in the equatorial eastern Pacific during the decaying phase of the 2010/11 La Nifia. However, isothermal analyses show obviously cold water still persisting at the surface and at subsurface depths in off-equatorial regions throughout early 2011, being most pronounced in the tropical South Pacific. The negative SST anomalies in the tropical South Pacific acted to strengthen a southern wind across the equator. The subsurface cold water in the tropical South Pacific then spread northward and broke into the equatorial region at the thermo- cline depth. This incursion process of off-equatorial subsurface cold water successfully interrupted the eastern propagation of warm water along the equator, which had previously accumulated at subsurface depths in the warm pool during the 2010/11 La Nifia event. Furthermore, the incursion process strengthened as a result of the off-equatorial effects, mostly in the tropical South Pacific. The negative SST anomalies then reappeared in the central basin in summer 2011, and acted to trigger local coupled air-sea interactions to produce atmospheric-oceanic anomalies that developed and evolved with the second cooling in the fall of 2011.

关键词：＂double dip＂ La Nifia subsurface cold water incursion off-equatorial process

Social network users clustering based on multivariate time series of emotional behavior

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The Journal of China Universities of Posts and Telecommunications 2014年第2期21卷 21-31页

作者： zhu jiang WANG Bai WU Bin School of Computer Science Beijing University of Posts and Telecommunications

It is known that the social network is an excellent source for gathering the emotions of people. There are thousands of micro-blogs posted in every second and every micro-blog that may contain a variety of user＇s emotions. The users＇ collective emotional behaviors are with great impacts on today＇s societies, so it is good to find groups for society management based on users＇ emotional behavior. This article focuses on analyzing multivariate emotional behavior of users in social network and the goal is to cluster the users from a fully new perspective-emotions. The following tasks are completed： firstly, the multivariate emotion of Chinese micro-blog with vector is analyzed, and multivariate time series to describe the user＇s emotional behavior are constructed. Seconedly, considering principal component analysis （PCA） in similarity and distance similarity, the similarity of the multivariate emotion time series is measured. The contribution could be summarized as follows： groups of users though different emotions in social network are discovered. The emotional fluctuation and intensity of users are considered as well. Experiment in clustering effectively illustrates the emotional behavior characteristics of the Users in different groups.

关键词： social network multivariate emotional behavior PCA similarity distance similarity