传统的延伸、创新及超越——中国作品中的现代音乐复调技法

20世纪是探索创新的世纪,淡化共性是20世纪艺术领域的共同特点。众多作曲家在承递了音乐传统精华的同时,在不同程度上运用不同的方式进行着创新。他们不断在寻找新的语汇和技法,追求多元化与个性化风格,探索新颖独特的音乐语言。各种风格和

音乐教育专业本科生创新能力培养

在网络信息全球化时代,高校传统的音乐教育模式已无法适应现代信息社会的需求,如何培养本科生的创新能力,是提高高校音乐教育质量的核心内容和关键所在。本文试图探讨有关音乐教育专业本科生应具有的信息素质与教育技术能力,以及如何将网络信息技术与高校音乐教育专业本科生的教育进行整合,构建适应网络信息化社会需求的音乐教育专业本科生的教育新理念

青海高原牛羊双腔吸虫病病原生物学的初步调查

不文报道在青海高原对牛羊双腔吸虫病病原生物学初步调查的结果。从29个流行地区绵羊收集的标本检查结果,发现有四种双腔吸虫,它们是中华双腔吸虫(Dicrocoelium chinensis)、矛形双腔吸虫(D.lanceatum)、客双腔吸虫(D.hospes)和枝双腔吸虫(D.dendriticum)。从三个流行区检查Helicella candacharica及Cathaica przewalskii二种陆地蜗牛,查到四种双腔吸虫成熟尾蚴,它们是中华双腔吸虫、矛形双腔吸虫及二种未定名的双腔吸虫尾蚴,此二种尾蚴是何种双腔吸虫尾蚴,尚待进一步研究。检查流行区中7种蚂蚁是于9月份从乐都的Formica gagates查到双腔吸虫囊蚴,其形态与中华双腔吸虫囊蚴十分相像

论大型组织中的信任问题

近来的一些研究，包括达戈·加尔塔（1988）以及吉姆斯·科尔曼（1990）、罗伯特·普特南（1993）、福山·弗兰西（1995）的研究，都主张信任或社会资本决定了一个社会的公共机构的绩效。这些研究将信任或社会资本看成是一个社会中人们通过合作以产生社交方面有效的结果并避免象囚徒困境这样的合作处境。例如，普特南（1993）就将社会资本作为意大利各地政府的绩效的决定性因素来考察。他证明了群众积极参与公民活动的地方（这可以看作是一个高度合作倾向的表现形式）也是地方政府展现出较高绩效目标尺度（如公共物品的交付）的地方。福山·弗兰西（1995）则进一步认为公民间的高度信任说明一个社会中包括厂商在内的所有机构的较优绩活动译者单位：武汉大学法学院社会学系（430060

Observation of inhomogeneous plasmonic field distribution in a nanocavity

等离激元材料和器件中电场的强度分布是等离激元技术及其应用的重要基础。虽然针尖增强光谱成像技术的发展已经实现了亚纳米的横向空间分辨率，并发现了亚纳米级电场的不均匀性，但是迄今人们对电场的纵向场强分布仍然知之甚少。李剑锋教授课题组设计了一种具有~2Å空间分辨率的分子尺，利用金单晶基底和壳层隔绝金纳米粒子来构筑等离激元纳米腔，并通过分子尺的拉曼信号强度，精准地直接表征纳米腔中的纵轴方向上高度不均匀的场强分布。中国科学技术大学罗毅教授课题组利用基于量子场论的局域场光谱理论，精确地模拟得到了与实验相符的等离激元纳腔中的场分布，并发现了因分子自聚焦作用而引起的“等离激元梳”。该工作提供了一种通用有效的定量表征纳腔中场强分布的方法，完善了对等离激元学基础的理解，为超高空间分辨的拉曼光谱成像、光学力调控分子组装、单分子反应操控提供指导。 该工作是在李剑锋教授和中国科学技术大学罗毅教授共同指导下完成的。实验部分主要由李超禹（论文第一作者，已毕业博士）、温宝英（在读博士）、李松波（已毕业硕士）完成，复旦大学段赛研究员（论文共同第一作者）和陈舒（已毕业博士）进行了局域场光谱理论计算。谢立强（已毕业博士）和毛秉伟教授帮助完成了扫描探针显微镜实验。浙江师范大学周小顺教授和王亚浩老师提供了自组装膜表征方面的重要帮助。印度的Kathiresan、叶龙武教授课题组和浙江大学陆展教授课题组在分子合成方面提供了重要帮助。瑞士伯尔尼大学Wandlowski教授和田中群教授为该工作提供了指导。【Abstract】The progress of plasmon-based technologies relies on an understanding of the properties of the enhanced electromagnetic fields generated by the coupling nanostrucutres.Plasmon-enhanced applications include advanced spectroscopies, optomechanics, optomagnetics and biosensing. However, precise determination of plasmon field intensity distribution within a nanogap remains challenging. Here, we demonstrate a molecular ruler made from a set of viologen-based, self-assembly monolayers with which we precisely measures field distribution within a plasmon nanocavity with ~2-Å spatial resolution. We observed an unusually large plasmon field intensity inhomogeneity that we attribute to the formation of a plasmonic comb in the nanocavity. As a consequence, we posit that the generally adopted continuous media approximation for molecular monolayers should be used carefully.The progress of plasmon-based technologies relies on an understanding of the properties of the enhanced electromagnetic fields generated by the coupling nanostrucutres1,2,3,4,5,6. Plasmon-enhanced applications include advanced spectroscopies7,8,9,10, optomechanics11, optomagnetics12 and biosensing13,14,15,16,17. However, precise determination of plasmon field intensity distribution within a nanogap remains challenging. Here, we demonstrate a molecular ruler made from a set of viologen-based, self-assembly monolayers with which we precisely measures field distribution within a plasmon nanocavity with ~2-Å spatial resolution. We observed an unusually large plasmon field intensity inhomogeneity that we attribute to the formation of a plasmonic comb in the nanocavity. As a consequence, we posit that the generally adopted continuous media approximation for molecular monolayers should be used carefully.The Swedish National Infrastructure for Computing is acknowledged for computer time. S.D. is sponsored by Shanghai Pujiang Programme (grant no. 19PJ1400600). 该研究工作得到国家自然科学基金、国家重点研发计划、安徽省量子信息技术引导专项等的资助和支持

Fabric evolution of two-dimensional idealized particle assemblage during shear

Microstructure or fabric definitely affects macroscopic mechanical behavior of granular material. It is also well-observed that fabric evolves with shearing or plastic deformation. In this study, a series of two-dimensional numerical direct shear tests are carried out with the discrete element method, to study the initial fabric effect on global material responses and their micro-macroscopic relations. Idealized particle assemblages are made up of mono-size elongated particles and are prepared by a “deposition” method. Elongated particle is modeled by the built-in clump logic, in which constitutive balls are joined together without further breakage. In the deposition method, there are three controlling parameters, including, deposited direction, inter-particle friction coefficient and particle number, to prepare specimens with similar initial density but different initial packing or fabric. Three types of fabric of particle assemblages are examined quantitatively and are monitored during shearing, including, particle orientations (PO), contact normal forces (NF), and void spaces (VS). These fabric distributions are described by two parameters―anisotropic degree ( ) and orientation angle ( ), with clear physical implications. An additional parameter ( ) describing the average size of voids, is used to quantify void perimeter. It is found that this parameter has a relation with the assemblage’s volumetric response. C With the systematic and meticulous quantification method, the linkage between the macroscopic and microscopic responses of particle assemblages is discussed quantitatively. The results show that the initial packing affects the shear zone thickness, initial stiffness, peak strength, and dilation rate. In the shear zone, particle orientations do not exhibit a unique state at the final stage of direct shearing. At that state, strong normal forces and strong voids are parallel to the major principal stress direction. It seems that the initial packing does not affect their final distributions. At the end of reverse shearing, strong voids and strong normal forces in the shear zone give an essentially unique state, and their preferential directions are related to the changed loading direction. However, apparent stable particle orientations are still affected by the initial fabric.published_or_final_versionCivil EngineeringMasterMaster of Philosoph

Application Research of Tobacco Production Quality Management Based on SPC

本文针对烟草行业特点和企业的实际需求,对烟草生产环节的质量管理进行了研究,将烟草生产的质量管理分为了几个核心功能模块,围绕这些功能模块解决企业急需解决的质量问题。通过在烟草企业的实际应用,证明该方法能够有效提高烟草的产品质量,同时通过与生产管理系统的集成,切实提高企业的信息化水平

串口转WIFI技术在烟草企业成品出库扫码中的应用研究

在卷烟企业成品出库扫码环节，扫码器与计算机之间通常采用串口通讯，串口通讯是有线传输，存在传输距离短，可移动性和扩展性差、后期运行成本和扩充成本高、故障查找难度大等缺点。为了改变卷烟企业成品出库扫码通讯系统的现状，本文采用一种基于串口转WIFI数据传输技术，应用于卷烟企业成品出库扫码通讯环节，从而使串口通讯摆脱了线缆的束缚，简化了通讯设备工艺布局，提高出库设备的技术先进性和适用性，并且有效解决了有线通讯中的缺点，增强了出库扫码通讯系统的响应速度，提高了成品出库效率

卷烟厂综合指标系统设计研究

本文介绍了通过计算机系统将企业对标指标逐层分解后计算、汇总、逐级统计的系统流程,描述了综合指标系统的功能结构。该系统为卷烟厂对标管理及综合指标管理与评价分析工作提供了一种信息化手段,便于企业人员及时准确掌握各类型指标信息,加快企业对标管理工作科学发展,从技术角度为企业提高管理水平提供支撑。</p