Minimum Norm Partial Quadratic Eigenvalue Assignment Using Receptances and System Matrices

振动控制广泛用于许多振动结构体的设计、维护和评估.这主要包括大型挠性空间结构控制、多体动力学系统控制、地震工程控制、阻尼陀螺系统稳定性控制、机器人控制设计以及结构动力学中的振动控制等工程领域. 在实际工程应用中，振动结构体往往通过有限元方法等离散技巧被离散为一个二阶常微分控制系统，其中系数矩阵代表分配物理参数矩阵，如质量矩阵、阻尼矩阵和刚度矩阵等.但是，通过该二阶模型计算得到的自然频率和模态（即特征值和特征向量）与通过对实际振动结构体测量得到的自然频率和模态往往不一致.一个有效的办法就是采用主动反馈控制，即利用反馈控制外力使得结构体满足测量或指定的自然频率而且剩余的地自然频率和模态保持不变，...Vibration control is widely used in the design, maintenance, and evaluation of many vibrating structures in engineering, which includes the control of large flexible space structures, the control of mechanical multibody systems, earthquake engineering,stabilization of damped gyroscopic systems, robotics, and vibration control in structural dynamics, etc. In practical engineering applica...学位：理学硕士院系专业：数学科学学院_计算数学学号：1902014115260

Design and Realization of Confidentiality File System

随着信息化技术的广泛应用，电子公文的普遍推行极大地影响了监狱机要文件管理的全过程。全国各地监狱机要系统开始进行信息化改造，利用信息网络进行机要信息的传递，提高信息传递的速度，减少纸张开销等机要成本。本文主要针对监狱等机要单位全手工管理涉密资料，造成工作量大，保密工作不扎实的问题，研究开发了用于该单位内部管理机要文件的实用软件——机要文件管理系统。 本文首先研究了电子文件管理的发展趋势，分析我国电子文件管理的现状及其发展趋势。其次，对机要文件管理系统的软件体系结构进行了研究，讨论了客户机/服务器模式和浏览器/服务器模式。阐述了这两种体系结构的特点及优点，并对两者的优缺点进行了比较。论文结合监狱...Along with the information technology and the widespread application, the electronic document is carried out generally greatly influences the prison confidential document management process. Throughout the prison system began to confidential information transformation, using information network for confidential information transmission, improve the information transmission speed, reduce paper cost...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201023052

Late Quaternary Sediment Stratigraphy and Marine Cycles in the Pingtan Island, Fujian Province

选择位于福建平潭岛北部芦洋埔海积平原的PT01钻孔,岩芯长度28.3 m,采用加速器碳同位素(AMS 14C)和光释光(OSL)测年建立地层年代框架,认为晚更新世富含有孔虫等海相生物化石的地层应归属于MIS 5高海面期,即MIS 5e的潮下带滨海相沉积。结合岩性特征、古生物化石、沉积物色度、粒度分析及其参数等指标,进行了沉积单元的划分,重建了MIS 6末期以来的沉积相变化过程,揭示出MIS 5期间的多次海平面波动变化,即MIS 5高海面期沉积环境仍存在滨海、潮坪、潟湖、风成砂等沉积相之间的转换,并可能存在短暂的陆相或风化过程。而该区整个末次冰期的沉积缺失或较薄,上部全新世沉积也不发育,厚度仅为3.79 m,以沼泽相―风成砂相为主。A 28.3 m long core, PT01, from the Pingtan Island, Southeast China, is selected to be studied. Radiocarbon dating(AMS 14C) and optical stimulated luminescene(OSL) are used for establishing chronology. Combining age-dating results with marine microfossil and color index, we classify the Late Quaternary sediment stratigraphy in the coastal region of Fujian Province. It is suggested that the late Pleistocene marine deposit, dated back to 124 ka, and abundant marine microfossil(e.g. foraminifer and ostracods), would belong to the Marine Isotope Stages 5(MIS 5). Moreover, the late Quaternary sediment could be divided into three units based on the analysis of lithology, microfossil, grain size and color index. Our results reveal that the sediment environment during the MIS 5 was significantly controlled by global sea level change which varied among coast, tidal flat, lagoon, and eolian sand, and probably there existed weathering process. A hiatus during the last glacial(MIS 2-4) was attributed to low relative sea level. And the Holocene deposit, as thick as 3.79 m, developed poorly and was mainly comprised of swamp facies and eolian dune.国家自然科学基金(41230101、41072128

Idolatry or Creativity: The Ideas of Artistic Creation and Being a Jewish Writer in Cynthia Ozick

2019年

福尔马林固定白鱀豚标本DNA提取及其遗传多样性的初步研究

福尔马林固定标本是宝贵的遗传资源,但是如何有效利用其中的遗传信息一直存在问题。本文尝试从标本预处理、消化、PCR扩增各方面综合考虑和优化改进,成功提取并扩增21头福尔马林固定白豚标本线粒体DNA控制区410bp片段。采用了3种预处理方法尽量去除固定标本中残存的甲醛,从试验结果来看,从酒精梯度+临界点干燥处理的标本中提取的DNA在扩增时具有明显优势。通过蛋白酶K消化过程中对于酶的浓度、温浴时间的比较试验,发现随着采用大幅提高酶浓度、延长消化时间等高强度的蛋白酶消化操作后,DNA的质量和产量均得到显著提高

1. これまでの研究の概要(I.研究の概要)

金沢大学教育学部附属養護学校/金沢大学教育学部附属養護学校/金沢大学教育学部附属養護学