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Underwater explosion in centrifuge Part Ⅱ：Dynamic responses of defensive steel plate

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Science China(Technological Sciences) 2017年第12期60卷 1941-1957页

作者： LONG Yuan ZHOU HongYuan liang XiangQian SONG Ge CHEN ZuYu HU Jing WANG QiuSheng ZHANG XueDong liang jianhui HUANG ZhiJie College of Field Engineering PLA University of Science and Technology Nanjing 210007 China Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of Technology Beijing 100124 China China Institute of Water Resources and Hydropower Research Beijing 100048 China School of Transportation Science and Engineering Beihang University Beijing 10083 China

Part II of this paper is focused on the dynamic response of a steel plate of the centrifuge model which is fixed on the container. This plate is 5 cm thick, allowing for non-destructive elastic response to all the 19 blasts. Three accelerators and 10 sets of strain gauges are installed on the plate to monitor the acceleration and deformation histories induced by shock waves and bubble *** article presents the characteristic values measured for shock waves and bubble oscillations response. The detailed information can be found in a database available on the web. In order to obtain the correct acceleration time history, the cut-off frequency of low-pass filtering by Fourier transformation was applied. The results indicated that the acceleration and strain induced by shock wave was nearly unaffected by the increasing gravity, while the effect of gravity has remarkable influence on those induced by bubble oscillation. A preliminary study of comparing the measured dynamic response with numerical simulations has been carried out using ANSYS LS-DYNA. The results captured the dynamic response in terms of characteristics and trends, but deviated in magnitude due the theoretical and technological limitations involved in both the physical and numerical models. It certainly deserves further studies.

关键词： underwater explosion shock wave bubble oscillation strain acceleration LS-DYNA

Morphine attenuates frustration-like behavior induced by sucrose reward deprivation in rats

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Neural Regeneration Research 2011年第28期6卷 2211-2216页

作者： Qing Liu Wangjun Qin Min Zhang Yanting Wang Li Jing Junxu Li jianhui liang National Institute on Drug Dependence Peking University Beijing 100191 China Department of Physiology Tianjin Medical University Tianjin 300070 China Department of Pharmacology and Toxicology School of Medicine and Biomedical Sciences University at Buffalo State University of New York Buffalo NY USA 14214

In this study, a T-maze-based frustration model in rats was established using sucrose-reward deprivation, The results revealed that rats maintained a 75% preference for the sucrose-reward arm in the reward phase. During the sucrose-deprivation frustration phase, both the preference for the sucrose-deprivation arm （62.5%） and time spent waiting in the sucrose-deprivation arm decreased. Acute injection of morphine increased the preference in a dose-dependent fashion, and prolonged the waiting duration in the sucrose-deprivation arm. These findings indicate that morphine specifically inhibited the frustration response induced by sucrose reward deprivation. To further elucidate the pharmacological mechanisms involved, the opioid receptor antagonist naloxone was given to model rats prior to the injection of morphine. The results revealed that naloxone administration markedly attenuated the anti-frustration-like effects of 3 mg/kg morphine treatment. These findings suggest that morphine attenuates the frustration-like response to reward deprivation in rats through the opioid receptor.

关键词： frustration morphine sucrose reward deprivation T-maze naloxone

Females adopt sexual catalepsy to facilitate mating

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Current Zoology 2024年第2期70卷 174-181页

作者： Jihe Liu Keke Liu Yu Tang Weihua Wang Xiang Xu jianhui liang Yonghong Xiao Mark A.Elgar College of Life Sciences Jinggangshan UniversityJi'anJiangxi 343009China Pharmaceutical Center Tsinghua UniversityBeijing 100084China College of Life Sciences Hunan Normal UniversityChangshaHunan 410081China School of Pharmaceutical Sciences Peking UniversityBeijing 100083China School of BioSciences University of MelbourneMelbourneVictoria 3010Australia School of Life Sciences and Technology Tongii UniversityShanghai 200092China

Theory predicts that males and females of dioecious species typically engage in an evolutionary sexual conflict over the frequency and choice of mating *** sexual cannibalism,a particularly dramatic illustration of this conflict,is widespread in certain animal taxa including ***,females of some funnel weaving spiders that are generally aggressive to conspecifics enter a cataleptic state after male courtship,ensuring the males can mate without risk of *** this study,we demonstrated that the physical posture and duration,metabo-lites,and central neurotransmitters of females of Aterigena aculeata in sexual catalepsy closely resemble females in thanatosis but are distinct from those in anesthesia,indicating that the courted females feign death to eliminate the risk of potentially aggressive responses and thereby allow preferred males to *** the taxonomically widespread thanatosis,which generally represents a deceptive visual signal that acts against the interest of the receivers,sexual catalepsy of females in the funnel weaving spiders may deliver a sexual-receptive signal to the courting males and thereby benefit both the signal senders and ***,sexual catalepsy in *** may not reflect a conflict butrather a confluence of interest betweenthe sexes.

关键词： female catalepsy funnel weaving spiders mate choice mating strategy sexual behavior.

Structure and magnetic properties of Ni50Mn35In15 thin film

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Progress in Natural Science:Materials International 2015年第2期25卷 117-121页

作者： Chao Jing Liju Yu Dong Zheng Pan Liao Yiming Cao jianhui liang Zhe Li Baojuan Kang Jincang Zhang Department of Physics Shanghai University State Key Laboratory of Surface Physics and Department of Physics Fudan University College of Physics and Electronic Engineering Key Laboratory for Advanced Functional and Low Dimensional Materials of Yunnan Higher Education Institutes Qujing Normal University Materials Genome Institute Shanghai University

Thin film of Ni50Mn35In15 Heusler alloy was prepared on Mg O(001) substrate by epitaxial growth in an ultra-high vacuum(UHV) chamber by a Pulsed Laser Deposition(PLD) method. The epitaxial growth process was monitored by in situ reflection high energy electron diffraction(RHEED) and the structure of the film was checked by ex situ X-ray diffraction(XRD), which indicates that high quality Ni50Mn35In15 single crystal film with a face-centered-cubic(fcc) structure could be stabilized on Mg O(001). Magnetic property measurement was also conducted at various temperatures by using physical property measurement system(PPMS). A significant exchange bias was observed for Ni50Mn35In15 film,and the strength of the exchange bias field(HEB) increases with the decrease of temperature. Such a behavior can be ascribed to the fact that the interfacial spin interaction between ferromagnetic(FM) and antiferromagnetic(AFM) cluster is enhanced with the decrease of temperature.

关键词： Ni50Mn35In15Heusler alloy Thin film Pulsed laser deposition Magnetic properties

随机预言模型下可证适应性安全的门限FFS签名方案

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西安电子科技大学学报 2011年第6期38卷 152-158,178页

作者：马苗梁建慧郭敏陕西师范大学计算机科学学院陕西西安710062 海南大学应用科技学院海南儋州571737

基于强RSA计算假设，提出了一种的随机预言模型下可证自适应安全的门限Feige-Fiat-Shamir 签名方案。该方案具有最优弹性，且计算量和通信量都较少。给出了该方案的严格安全性证明。在随机预言模型下，若基础的Feige-Fiat-Shamir签名方... 详细信息

基于强RSA计算假设，提出了一种的随机预言模型下可证自适应安全的门限Feige-Fiat-Shamir 签名方案。该方案具有最优弹性，且计算量和通信量都较少。给出了该方案的严格安全性证明。在随机预言模型下，若基础的Feige-Fiat-Shamir签名方案在选择消息适应性攻击下是不可伪造的，且假设计算模大安全素数的离散对数问题是困难的，可证明该方案是不可伪造的、鲁棒和适应性安全的。

关键词：门限密码学数字签名可验证秘密共享可证明安全适应性安全

新时代背景下高校德育的时代性创新——党的二十大报告所蕴含的德育内容论析

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高教探索 2023年第5期 108-116页

作者：梁健惠广州美术学院马克思主义学院广州510006

党的二十大报告指出,“教育是国之大计、党之大计”,育人的根本在于立德,要落实立德树人根本任务,培养德智体美劳全面发展的社会主义建设者和接班人,并对新时代教育事业与人才培养“为党育人,为国育才”作出了总体战略部署,为“实施科... 详细信息

党的二十大报告指出,“教育是国之大计、党之大计”,育人的根本在于立德,要落实立德树人根本任务,培养德智体美劳全面发展的社会主义建设者和接班人,并对新时代教育事业与人才培养“为党育人,为国育才”作出了总体战略部署,为“实施科教兴国战略,强化现代化建设人才支撑”指明了方向和提供了根本遵循,其中蕴含着丰富的新时代德育内容。面对新时代提出的新要求和带来的新挑战,高校德育在教育理念、教育方法、教育形式和教育载体等方面存在着种种不适应。高校德育需适应外部大环境和微观环境的需求与变化,更新教育观念,丰富教育内容,变革教育模式,创新教育手段,加强师资队伍建设,从而发挥高校德育在新时代的强大育人功能。

关键词：二十大新时代高校德育创新

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竞技篮球运动与表演艺术的双向律动

沈阳体育学院学报 2013年第1期32卷 104-107页

作者：梁健辉广东药学院体育部广东广州510006

从戏剧学和社会学的视角对竞技篮球运动和表演艺术的相关概念、律动关系及互动趋势进行系统研究。提出竞技的"育人夺标"理解和表演艺术的"社会角色承担和生活艺术"理解;然后从戏剧学领域中的题材和社会学领域中的表演两个方面论述竞技... 详细信息

从戏剧学和社会学的视角对竞技篮球运动和表演艺术的相关概念、律动关系及互动趋势进行系统研究。提出竞技的"育人夺标"理解和表演艺术的"社会角色承担和生活艺术"理解;然后从戏剧学领域中的题材和社会学领域中的表演两个方面论述竞技篮球运动与表演艺术的双向律动关系;最后从内容形式和结构功能的角度,对竞技篮球运动与表演艺术的互动趋势进行展望,提出未来竞技篮球运动必将作为独特的表演艺术存在于社会生活中。

关键词：竞技篮球运动表演艺术戏剧学社会学

中国经济功能区在走向体制复归吗——基于发展型国家和城镇化两种视角的分析

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学术研究 2019年第8期 42-48,177页

作者：倪星梁剑辉中山大学政治与公共事务管理学院

随着中国进入全面深化改革的新阶段,大量不同类型的经济功能区开始走向与行政区合并的道路。这种政区合一的新趋势引发了学术界有关“体制复归还是创新选择”的热烈讨论:这种曾经带动中国经济奇迹性增长的功能性区划是否正随着中国经济... 详细信息

随着中国进入全面深化改革的新阶段,大量不同类型的经济功能区开始走向与行政区合并的道路。这种政区合一的新趋势引发了学术界有关“体制复归还是创新选择”的热烈讨论:这种曾经带动中国经济奇迹性增长的功能性区划是否正随着中国经济社会转型而寿终正寝?本文系统梳理了国内外文献,大致将其分为两种视角:发展型国家的视角认为,这些经济功能性区划曾经高度依赖政府的政策性授权和相关权威支持,本质上是双低时代(低市场化、低开放度)的过渡性产物;而城镇化的视角则认为,这种变化源自城镇化发展带来的社会需要,符合“瓦格纳法则”的支配规律。这些文献为下一步研究奠定了良好的分析基础,也为后来者指明了方向,特别是在功能区转型发展背后的中央与地方角色定位、上下级间的激励机制以及对新近的国家级高新区、自贸区、新区等蓬勃发展的新型功能区的关注上,仍有待深入研究。

关键词：经济功能区体制复归发展型国家城镇化

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人工蜂群算法在图像分割中的应用研究

计算机工程与应用 2012年第8期48卷 194-196,229页

作者：梁建慧马苗陕西师范大学计算机科学学院西安710062 海南大学应用科技学院海南儋州571737

为快速准确地分割图像,将新型群体智能模型中的人工蜂群算法、灰度形态学和二维Otsu法相结合,提出了一种图像分割新方法。该方法对待分割的图像进行灰度形态学中的闭操作预处理,以抑制图像噪声,把图像阈值看成人工蜂群算法中的蜜蜂,利... 详细信息

为快速准确地分割图像,将新型群体智能模型中的人工蜂群算法、灰度形态学和二维Otsu法相结合,提出了一种图像分割新方法。该方法对待分割的图像进行灰度形态学中的闭操作预处理,以抑制图像噪声,把图像阈值看成人工蜂群算法中的蜜蜂,利用二维Otsu法设计人工蜂群算法的适应度函数;通过采蜜蜂、侦察蜂和观察蜂的分工协作和信息共享,逐代逼近最佳阈值。实验结果显示,该方法在分割红外图像和SAR图像时,分离出来的目标更加适合后序的分析和处理。

关键词：人工蜂群算法灰度形态学二维Otsu 图像分割