摘要：泰山石敢当习俗是我国传播广泛、影响深远的国家级非物质文化遗产。从文化创意的视角,其内容可分为符号、知识和观念三个方面。以此为基础,可以从符号到产品、从知识到体验、从观念到生活方式三种文化创意转化方式实现非物质文化遗产的现代传承。

摘要：When a seismic wave propagates through subsurface viscoelastic media,the formation absorbs the high-frequency energy of the seismic wave more strongly than the low-frequency *** the depth and the off set increase,the diff erence between the logarithmic spectral areas with high and low frequencies gradually *** on this seismic wave characteristic,we have developed a novel Q-estimation method based on logarithmic spectral area diff erence of high and low frequencies(referred to as the LSAD_LH method).In this paper,we derive the theoretical relationship between the Q value and difference of logarithmic spectral areas with high and low frequencies and prove the applicability of the LSAD_LH method using a single-layer medium numerical *** verify the sensitivity of the LSAD_LH method to bandwidth selection and noise,we compare the LSAD_LH method with two credible methods—the logarithmic spectral ratio(LSR)and logarithmic spectral area diff erence(LSAD)methods using a synthetic model containing the random *** results demonstrate that the LSAD_LH method is not highly dependent on bandwidth,and in terms of noise immunity,it is signifi cantly better than the LSR method and has the same advantages as the LSAD *** further highlight the advantages of the LSAD_LH method,we apply the LSAD_LH and LSAD methods to the vertical seismic profi ling(VSP)numerical simulation of the multilayer media and the fi eld zero-off set VSP *** application of the two cases proves the applicability of the LSAD_LH method and the accuracy of the high Q-value estimation relative to the LSAD ***,via the transmission coeffi cient,the LSAD_LH method overcomes the weakness of the LSAD method.

摘要：混沌系统具有非线性、伪随机性、初始值敏感等特性,为基于动力系统构造性能良好的S盒提供了基础,进一步保证了分组加密算法安全性.目前,基于混沌构造S盒的方法大多数针对单个性能指标进行优化,难以获得全面的性能提升.针对此问题,结合混沌映射与多目标遗传算法,提出了一种新的S盒设计方法.首先,利用混沌映射的特性产生初始S盒种群;然后,以S盒的非线性度和差分均匀性为优化目标,基于遗传算法框架对上述两指标进行优化.针对S盒的特点,在优化算法中引入了交换操作,设计了新的变异操作以及非支配序集计算,有效提升了S盒的非线性度和差分均匀性.实验结果表明该算法产生的S盒其差分均匀度为6,非线性度值至少为110,有效提升了S盒的综合性能.

摘要：不锈钢复合钢材是一种成本低、强度高、耐腐蚀性能优异的高性能钢材,其在对耐腐蚀要求高的工程结构应用中尤其具有竞争力。该文旨在通过试验,研究不锈钢复合钢材焊接方管T形节点在静力和低周往复荷载作用下的力学性能,设计、制作了4个管节点试件并完成了加载,基于试验结果重点研究了各管节点试件的试验过程、破坏模式、荷载-位移响应和应变发展等;按中国规范GB 50017和欧洲规范EN 1993-1-8进行了节点承载力计算,并与试验值进行了对比。研究结果表明,对于支管承受轴向压力的管节点试件,以主管上表面塑性破坏为主;对于支管承受水平低周往复荷载的管节点试件,以主管上表面塑性变形和主管与支管之间连接焊缝断裂破坏为主;当管节点破坏模式符合现行规范GB 50017和EN 1993-1-8中规定时,相关承载力计算公式仍适用于此类不锈钢复合钢材焊接方管T形管节点的设计计算。

摘要：针对4阶混沌电力系统,该文提出一种具有快速收敛特性的自适应协同控制方案。首先基于Lyapunov稳定性定理和全局快速收敛理论,设计了一种具有快速收敛特性的协同控制器,该控制器可使宏变量快速到达不变流形并可以得到平滑无抖振的控制输入,实现宏变量的精确收敛。然后将所设计的控制器应用于4阶电力系统的混沌控制中。由于电力系统中的能量过剩会引起混沌振荡,在控制回路中引入储能装置,通过控制储能装置吸收电力系统中多余的有功功率来抑制其混沌振荡。在此基础上通过设计自适应律,消除了控制器设计过程中出现的复杂项,增加了控制器的实用性。最后通过数值仿真,验证了该控制方案的有效性与优越性。

摘要：美国学者欧内斯特·费诺罗萨在12年的旅日经历中,意识到了中国美术的审美价值。他创新了“整体性”的世界美术认知视野,更是预言了中国美术介入西方现代知识生成的必要性。于是在归美后,费氏通过开设讲座、策划展览、出版专著,在19世纪末20世纪初将真正的中华审美价值推广至西方世界。

摘要：A study was conducted to analyze the deformation mechanism of strongly weathered quartz schist in the Daliangshan Tunnel,located in the western Transverse Mountain area.A large deformation problem was experienced during the tunnel *** mitigate this problem,a support system was designed incorporating negative Poisson ratio(NPR)anchor cables with negative Poisson ratio *** model experiments,field experiments,and numerical simulation experiments were conducted to investigate the compensation mechanical behavior of NPR anchor *** large deformations of soft rocks in the Daliangshan Tunnel are caused by a high ground stress,a high degree of joint fracture development,and a high degree of surrounding rock fragmentation.A compensation mechanics support system combining long and short NPR anchor cables was suggested to provide sufficient counter-support force(approximately 350 kN)for the surrounding rock inside the *** the NPR anchor cable support system with the original support system used in the Daliangshan tunnel showed that an NPR anchor cable support system,combining cables of 6.3 m and 10.3 m in length,effectively prevented convergence of surrounding rock deformation,and the integrated settlement convergence value remained below 300 *** study provides an effective scientific basis for resolving large deformation problems in deeply buried soft rocks in western transverse mountain areas.

摘要：伊斯兰革命后,伊朗电影开始了“伊斯兰化”的“净化”过程,面纱成为理解革命后伊朗电影民族主体意识与宗教哲学精神的重要视角。“面纱美学”的理论扩容意味着要超越面纱“标记女性”的单一维度,将视角放置在电影整体的本体与美学层面。通过艺术史学与形式美学的路径分析,可以发现面纱观看的视觉经验与神性本质,以及“面纱化”创作语法的现代性与对抗性:“伊斯兰化”想象世界的现代寓言与西方主流电影视觉逻辑的对抗。

摘要：浙昆的《壮哉少年》对话经典,寻绎经典作品内涵的舞台新密码,张扬昆曲传统的人文关怀。全剧以裴舜卿为主角,重新阐发李慧娘鬼魂复仇的故事,在历史真实和艺术虚构的交织中凸显思想性、传奇性和趣味性,青年的热血与悲壮、佞臣的奸诈与专横,在舞台上得到淋漓尽致的展现,充满道义和人性的光芒。全剧关注大众审美趣味,好看、通俗,富于诗意,呈现出鲜明的浙派风格。主演王恒涛脱颖而出,唱做念表形神兼备,本工、反串兼擅,为该戏增光添彩。新时代戏曲创作步入多元化格局,戏曲经典作品的多维阐释拓宽了戏曲创作边界,从方法论上为戏曲话语体系的构建提供了参考的价值。

摘要：正交时频空(OTFS)调制可以将时间和频率选择性信道转换为时延-多普勒(DD)域的非选择性信道,这为高速移动场景建立可靠的无线通信提供了解决方案。然而,在车联网等复杂的多散射场景下,信道存在严重的多普勒间干扰(IDI),这给OTFS接收机信号的准确解调带来了极大的挑战。针对上述问题,该文提出一种联合稀疏贝叶斯学习(SBL)和阻尼最小二乘最小残差(d-LSMR)的OTFS接收机设计。首先,根据OTFS时域和DD域的关系,采用基扩展模型(BEM)将信道估计问题转换为基系数恢复问题,精准估计包括多普勒采样点在内的DD域信道。然后,提出一种高效的转换算法将基系数转换为信道等效矩阵。其次,将信道估计中估计得到的噪声,用于d-LSMR均衡器中进行信道均衡,并利用DD域信道矩阵的稀疏性实现快速收敛。系统仿真结果表明,与目前代表性的OTFS接收机相比,该文所提方案实现了更好的误码率性能,同时降低了计算复杂度。