摘要：1950年以后,张大千先后旅居阿根廷、巴西、美国等地达二十多年。自其旅居之初,便将自己收藏的艺术珍品以极低的价格转售给文物管理部门,又将早年临摹的敦煌壁画捐赠给四川博物院和台北故宫博物院。张大千晚年定居台北,又将自己收藏的国宝级艺术珍品捐赠给台北故宫博物院。在张大千的影响下,张大千的徒孙孙凯按照他父亲遗言,将其父收藏的张大千作品和遗物捐赠给成都市人民政府。这些都体现着张大千艺术报国的爱国情怀,并激励着后世的画家。

摘要：“伦理先行”是党和政府针对加强当下科技伦理治理提出的,其本质就是基于国家顶层设计,以科技伦理为基本治理工具,以前瞻研判伦理冲突和风险为基本方法,以应对风险、确保福祉为目的而构成的一项科技伦理治理要求。“伦理先行”有重要的现实根源,即确保科技向善发展的良好初心、前瞻研判科技风险的现实需要、推动实现富民强国的战略目标,以及科技风险带来的巨大压力。贯彻“伦理先行”,应营造“亲科技”氛围,确立“伦理先行”的价值逻辑;积极构建科技伦理体系,确立“伦理先行”的工具逻辑;积极健全机构机制,确立“伦理先行”的组织逻辑;积极推进道德教育,确立“伦理先行”的道德逻辑。

摘要：对于中国的地方戏而言,地方是它的母体,需要是它的前提,差异是它的本质。本文对当下地方戏所处境遇颇为忧虑:一是需求弱化,个性丢失,中心地位不复存在;二是时过境迁,载体丧失,生存空间日益萎缩;三是先天不足,后天罹患,发展道路愈见迷茫。

摘要：以前的人们与自然亲密无间，我们至今能够通过他们的眼睛看到那充满灵性的世界。但是，我们为什么不能享受与世界的和谐共处了呢？我们为什么继承了一个传统，而不是一种对世界的洞察能力？

摘要：The seismic performance of steel reinforced ultra-high-strength concrete columns(SRSHC) with various shear-span ratios(λ) were studied through a series of *** concrete compressive cube strength value of experimental specimens ranged from 92.9 MPa to 108.1 *** main experimental variables affecting seismic performance of specimens were axial load ratio and stirrup reinforcement *** columns(λ=2.75) subjected to low cyclic reversed lateral loads failed mainly in the flexural-shear mode failure and columns(λ≤2.0) subjected to low cyclic reversed lateral loads failed mainly in the shear mode *** force-displacement hysteretic curves and skeleton curves were *** of the specimen displacement ductility was *** results indicate that ductility decreases with axial pressure ratio increasing,and increases with stirrup reinforcement ratio *** values of axial pressure ratio and minimum stirrup reinforcement ratio of columns are proposed to satisfy definite ductility *** suggested values provide a reference for engineering application and for the amendment of the current Chinese design code of steel reinforced concrete composite structures.

摘要：为了分析轮毂电机偏心对电动汽车平顺性的影响,建立了考虑轮毂电机质量和轮毂电机激励的电动汽车平面4自由度振动模型,推导出相应的状态方程和输出向量表示,确定了平顺性评价指标.采用滤波白噪声方法建立了随机路面前轮激励,将Laplace变换和4阶对称Pade逼近相结合获得了随机路面后轮激励与随机路面前轮激励的关系,给出了典型的四相8/6极开关磁阻电机整体垂向激励的表示.实现了随机路面激励和轮毂电机激励的仿真,在B级路面上进行了4种工况的随机路面平顺性仿真和比较.结果表明,轮毂电机偏心对随机路面下电动汽车平顺性有着不可忽视的影响,设计电动汽车时需要考虑轮毂电机偏心引入的负效应.

摘要：Sudden earthquakes pose a threat to the running safety of trains on high-speed railway bridges,and the stiffness of piers is one of the factors affecting the dynamic response of train-track-bridge *** this paper,a experiment of a train running on a high-speed railway bridge is performed based on a dynamic experiment system,and the corresponding numerical model is *** reliability of the numerical model is verified by ***,the experiment and numerical data are analyzed to reveal the pier height effects on the running safety of trains on *** results show that when the pier height changes,the frequency of the bridge below the 30 m pier height changes greater;the increase of pier height causes the transverse fundamental frequency of the bridge close to that of the train,and the shaking angle and lateral displacement of the train are the largest for bridge with 50 m pier,which increases the risk of derailment;with the pier height increases from 8 m to 50 m,the derailment coefficient obtained by numerical simulations increases by 75% on average,and the spectral intensity obtained by experiments increases by 120% on average,two indicators exhibit logarithmic variation.

摘要：齐白石(1864～1957)生于湖南湘潭,是我国近代艺术大师,他擅长画花鸟鱼虫。他继承了中国传统绘画和民间艺术的精华,常以写意笔法画花卉,以工笔画昆虫,形成了独特的艺术风格。本文介绍邮票上的齐白石昆虫绘画。

摘要：如果说发生在宋、元甚至明中期以前的杂剧、传奇是古典戏曲,发生在近代并一直存活至今的京剧和绝大多数地方戏是近现代戏曲的话,那么,青阳腔的出现即可说是引发了中国戏曲的现代品格并使之完成最终定型,堪为从古典戏曲到现代戏曲的桥梁和媒介。它直接影响并改变了中国主流戏曲的形态与进程,使之成为名副其实的戏曲、彻头彻尾的表演艺术、无可争议的大众消费和地地道道的民俗文化。

摘要：为了探究不同形式地面灯光警示系统对低头族人群的警示效果,设计眼动实验,分析现有的地面灯光中红、黄不同光色及闪烁、常亮不同形式对低头族警示作用的差异性,寻找警示作用更好的灯光颜色和形式。在受控实验室下,模拟四种常见的地面灯光设定,被试人员佩戴眼动仪,在灯光干扰下执行手机分心任务。针对获得的眼动数据,通过分析注视点热点图分布、AOI(Areas of Interest)总注视次数多少、AOI总访问次数多少以及主观数据分值大小,对比不同灯光设定形式组合对被试的警示效果。结果表明:黄色闪烁性灯光对被试的警示效果要强于其他灯光形式。因此在地面灯光警示系统设计中,闪烁性的黄色灯光对低头族的警示效果更好,能够更好的提高低头族过街的安全性。