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Principle of equivalency of bed structures and bed load motion

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International Journal of Sediment Research 2012年第3期27卷 288-305页

作者： Zhao-yin WANG kang zhang State Key Lab of Hydroscience and Engineering Tsinghua University

Step-pool systems and cobble clusters are structures composed of boulders and cobbles on mountain streambeds rearranged by flood flow to reach high resistance and high bed *** bed structures and bed load motion can protect the riverbed from *** each step-pool,the flow energy is transformed into turbulence,and finally into *** load motion also consumes flow energy and plays a role to protect the bed from *** collision of bed load particles with the bed results in a force,known as dispersive force,which balances the lift force and controls the erosion of bed *** investigations and field experiments were conducted in the Xiaojiang River basin on the Yunnan-Guizhou plateau of China,where there were incised streams and stable streams with bed load motion or with step-pool *** study reveals that for a given stream power, strong bed structures are associated with low or zero bed load transportation;and weak or no bed structures are associated with intensive bed load *** showed that for incised streams, the final bed profiles were the same if there was bed load motion or there were bed *** key stones that made up the bed structures,for instance the large boulders in steps,were removed,the flow immediately scoured the sediment *** bed load transportation sharply increased by 100 times and the median diameter of bed load increased by 2-20 *** structures and bed load motion are mutually replaceable for their effects on flow energy consumption and streambed incision *** is the principle of equivalency of bed load motion and bed *** is due to the principle that there was no bed load motion in the Yalutsangpo Grand Canyon,where a very strong step-pool system had developed,although the bed gradient and shear stress of flow were extremely high.A possible application of this principle for incision control of the downstream reaches of the Three Gorges Dam is also discussed in t

关键词： Bed structures Bed load motion Riverbed incision Stream power Step-pool system

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昆虫视叶结构与功能的研究进展

环境昆虫学报 2024年第1期46卷 1-12页

作者：谢桂英张继康杨学航杨淑芳河南农业大学植物保护学院河南省害虫绿色防控国际联合实验室郑州450002

视觉在昆虫飞行、识别寄主和配偶,及寻找产卵位点等行为中起着重要的作用。视叶是昆虫脑内视觉中枢,具有复杂的解剖结构和神经元构成模式,并在接受整合视觉信息方面起重要作用,但具体的视觉神经回路及机制尚未被阐明。本文系统综述了视... 详细信息

视觉在昆虫飞行、识别寄主和配偶,及寻找产卵位点等行为中起着重要的作用。视叶是昆虫脑内视觉中枢,具有复杂的解剖结构和神经元构成模式,并在接受整合视觉信息方面起重要作用,但具体的视觉神经回路及机制尚未被阐明。本文系统综述了视叶解剖结构类型及神经元构成、及在颜色识别、偏振光检测和运动检测功能等方面的研究进展,提出视叶未来的研究方向,旨在为深入开展基于视觉的昆虫对环境的适应性机制及害虫行为调控提供科学依据。

关键词：视叶视髓视小叶视小叶板视觉神经元

Visual order of Chinese ink paintings

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Visual Computing for Industry,Biomedicine,and Art 2020年第1期3卷 257-265页

作者： Zhen-Bao Fan kang zhang Department of Computer Science The University of Texas at DallasRichardsonTX 75082-3021USA

Visual order is one of the key factors influencing the aesthetic judgment of *** paper reports the results of evaluating the influence of extracted features on visual order in Chinese ink paintings,using a regression *** use nine contemporary artists’paintings as examples and extract features related to the visual order of their paintings.A questionnaire survey is conducted to collect people’s rating scores on the visual *** regression modeling,our research analyzes the significance of each feature and validates the influences of the features on the visual order.

关键词： Aesthetic measurement Paintings Visual order Visual information processing

基于多智能体算法的智慧无人仓布局设计及AGV调度优化研究

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物流工程与管理 2024年第5期46卷 18-20,52页

作者：赵博阳王雷黄康诚周强张康东南大学经济管理学院江苏南京211189

智能物流是工业4.0的几大主题之一,而基于AGV系统的智能无人仓是现有技术下,物流仓储阶段智能化的一种可能形式。其中,无人仓布局和AGV调度策略都是影响无人仓技术成熟度的重要因素。考虑到无人仓布局与AGV调度策略相互影响的特征,通过... 详细信息

智能物流是工业4.0的几大主题之一,而基于AGV系统的智能无人仓是现有技术下,物流仓储阶段智能化的一种可能形式。其中,无人仓布局和AGV调度策略都是影响无人仓技术成熟度的重要因素。考虑到无人仓布局与AGV调度策略相互影响的特征,通过将MAPF问题的研究成果与ALNS算法相结合设计AGV调度策略,实验研究了过道等布局要素对于无人仓吞吐效率的影响。实验结果表明,好的过道布局有益于提高无人仓内AGV的运行效率。

关键词：无人仓布局 AGV调度 ALNS 基于冲突搜索多智能体算法

A new insight for stem cell therapy:apoptotic stem cells as a key player

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Signal Transduction and Targeted Therapy 2022年第9期7卷 3181-3183页

作者： Yuhe Huang Ziyi Bai kang zhang Laboratory of Aging Research and Cancer Drug Target State Key Laboratory of BiotherapyNational Clinical Research Center for GeriatricsWest China HospitalSichuan UniversityNo.17Block 3Southern Renmin RoadChengduSichuan 610041PR China Zhuhai International Eye Center Zhuhai People's Hospital and The First Afliated Hospital of Faculty of MedicineMacao University of Science and TechnologyZhuhaiChina

Recently,two studies on therapeutic effects of stem cell therapy were published in Signal Transduction and Target Therapy1 and Nature Communications.2These studies have shed the light on a unique aspect of stem cell therapy which involves a previously unrecognized key player,namely apoptotic *** two publications have elucidated how the apoptotic cells exert immunomodulatory effects in stem cell therapy in several animal models.

关键词： apo therapy Therapy

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浙江省碳捕集利用与封存技术研究进展

南方能源建设 2024年第5期11卷 26-36页

作者：侯成龙来振亚陈嘉映吕洪坤丁历威章康张晓龙国网浙江省电力有限公司电力科学研究院浙江杭州310014 浙江大学能源高效清洁利用全国重点实验室浙江杭州310027

[目的]能源安全前提下的绿色低碳转型与工业结构调整是浙江省“碳达峰碳中和”工作面临的严峻挑战。由于浙江省煤电发电量占比较高,碳捕集利用与封存技术(CCUS)有望在浙江省能源与工业等领域的双碳技术体系中扮演重要角色,是实现化石能... 详细信息

[目的]能源安全前提下的绿色低碳转型与工业结构调整是浙江省“碳达峰碳中和”工作面临的严峻挑战。由于浙江省煤电发电量占比较高,碳捕集利用与封存技术(CCUS)有望在浙江省能源与工业等领域的双碳技术体系中扮演重要角色,是实现化石能源大规模低碳利用的重要技术选择。[方法]从CO_(2)捕集、输送、利用与封存方面综述了浙江省CCUS技术的研究进展,介绍了浙江省CCUS工程示范项目的开展情况;总结了CCUS全链条各环节主要技术的特点,简要分析了当前CCUS技术发展的问题;展望了CCUS技术在浙江省的发展前景,并提出了发展建议。[结果]浙江省在CCUS各环节,特别是CO_(2)捕集方面拥有良好的技术储备。省内全流程示范项目工艺路线多样,捕集侧包括燃烧前和燃烧后捕集,利用与封存侧涵盖生物、矿化、化工利用及地质封存,各环节技术成熟度差异化较明显。项目规模较小,初投资和运行成本普遍较高,空间分布分散,不利于形成产业集群。[结论]需准确把握浙江省重点领域CCUS潜力和源汇条件,因地制宜推广CCUS集成项目,持续开展技术研发,并在激励机制、政策法规、商业模式等方面予以保障。

关键词： CO_(2)捕集 CO_(2)利用地质封存 CCUS 碳达峰碳中和

EXPERIMENTAL RESEARCH ON RADIATION FROM DOUBLE CYLINDRICAL STRUCTURES

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Journal of Hydrodynamics 2006年第2期18卷 156-160页

作者： JI Gang zhang Wei-kang ZHOU Qi-dou Department of Naval Architecture and Ocean Engineering Naval University of Engineering Wuhan 430033China

An experiment on radiation from double cylindrical structures was held in an open-air pond. Radiation responses from one-point harmonic force driven model and two-point stochastic forces driven model were measured. Nu... 详细信息

关键词： acoustic radiation experiment double cylindrical structure

赛教融合背景下基于OJ平台的高级程序设计课程教学改革——以昌吉学院信息工程学院为例

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创新创业理论研究与实践 2024年第10期7卷 42-46页

作者：林世明宋长军李芳张康厦门大学电子信息国家级实验教学示范中心昌吉学院信息工程学院

高级程序设计是面向计算机类学生的专业必修课程之一，传统教学模式存在较多局限性，难以激发和调动学生学习的主动性和积极性。该文结合实际，以生为本，提出了“以赛促教、赛教融合”创新人才培养新模式，充分利用在线编程OJ平台、雨... 详细信息

高级程序设计是面向计算机类学生的专业必修课程之一，传统教学模式存在较多局限性，难以激发和调动学生学习的主动性和积极性。该文结合实际，以生为本，提出了“以赛促教、赛教融合”创新人才培养新模式，充分利用在线编程OJ平台、雨课堂等工具，提高课堂的互动性和活跃度，提升学生的课堂参与度。经过近3年的持续改革，取得了一定成效，表明在当前背景下赛教融合创新改革方案是契合实际校情、院情的行之有效的改革方案。

关键词：赛教融合高级程序设计 OJ平台学科竞赛数字经济课程改革

q-Deformations of 3-Lie Algebras

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Algebra Colloquium 2017年第3期24卷 519-540页

作者： Ruipu Bai Lixin Lin Yan zhang Chuangchuang kang College of Mathematics and Information Science Hebei University Baoding Hebei 071002 China

q-Deformations of 3-Lie algebras and representations of q-3-Lie algebras are discussed. A q-3-Lie algebra （A, [, ,]q, [, ,]＇q, Ja）, where q ∈ F and q ≠ 0, is a vector space A over a field F with 3-cry linear multiplications [,, ]q and [,, ]＇q from A 3 to A, and a map Jq ： A 5→ F satisfying the q-Jacobi identity Jq（x1, x2, x3, x4, x5）[x1, x2, [x3, x4, x5]q]＇q = Jq（x4, x5, x1, x2, x3）[x4, x5, [x1, x2, x3]q]＇q for all x1 ∈ A. If the multiplications satisfy that [,,]q = [,,]＇q and [,,]q is skew-symmetry, then （A, [,,]q, Jq） is called a type （I）-q-3- Lie algebra. From q-Lie algebras, group algebras and commutative associative algebras, q-3-Lie algebras and type （I）-q-3-Lie algebras are constructed. Also, the non-trivial one- dimensional central extension of q-3-Lie algebras is investigated, and new q-3-Lie algebras （DerqC[x,x-1], [, ,]q, [, ,]＇q, Jq）, and （Derδq C[x,x-1], [, ,]q, [,,]＇q, Jq） are obtained.

关键词： q-3-Lie algebra q-deformation q-Jacobi identity