结构的塑性分析与含体积型缺陷压力容器和管道的失效评定

本文简要综述了作者及其团队近十多年来在这一领域的系统研究成果——结构塑性极限与安定分析的数值理论及其在压力容器与管道安全评定方面的工程应用。 重点介绍了多种典型的先进数值计算方法的特点和思路,阐述了应用极限与安定分析理论解决工程实际问题的一般方法、思路和过程,突出展示了典型、成功的工程应用案例。这些成果既有理论创新和发展,又解决了工程中关键技术难题,形成了较为完整和一般通用的应用理论体系,构成了我国在这一领域的重要系统性创新成果,已被中国国家标准（GB/T19624-2004）和政府技术规范采纳。     

专家型化学教师教学知识发展途径

对29位专家型化学教师教学知识来源的调查发现,自身的教学经验和反思、有组织的专业活动是最重要的来源;阅读专业书刊、同事间日常交流、教科书、在职专业培训是比较重要的来源;职前培训是一般来源,而作为中小学学生时的经验是最不重要的来源。     

Real-Time Quantum Feedback Control: ManipulatingQuantum State in Non-Markovian System

In this paper, we propose a closed-loop real-time feedback design for manipulating a quantum state to a target eigenstate via sequential measurements. To this end, based on the Lyapunov stability theorem, considering the controllability and convergence of the system, we select one measured observable and two control channels, which feedback part of the output signal to the input end, forming a closed-loop control. By dynamical programming, we find the optimal parameters to achieve state transfer with a high probability by real-time feedback control. Numerical simulation experiments show that, in a stochastic quantum system with non-Markovian noise, the real-time control strategy moves the system from initial state to the target eigenstate with fast convergence.

     

Ti∶sapphire Regenerative Amplifier at 1.056μm

１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｔｅｃｈｎｉｑｕｅｏｆｃｈｉｒｐｅｄｐｕｌｓｅａｍｐｌｉｆｉｃａｔｉｏｎ（ＣＰＡ）ｉｓａｍｏｓｔｃｏｍｍｏｎａｐｐｒｏａｃｈｔｏｐｒｏｄｕｃｅｈｉｇｈｐｏｗｅｒｕｌｔｒａｓｈｏｒｔｌａｓｅｒｐｕｌｓｅｓ．Ｉｎｔｈ...     

measurement of Third Order Hyperpolarizability of Some Dyes

A degenerate four-wave mixing experiment with the solutions of some dyes has been performed using 10ns pulses at 530nm. Large resonant and off-resonant third order hyperpolarizabilities were obtained.     

Biomimetic thermo-responsive star diblock gelators

We report the synthesis of novel biomimetic gelators with star diblock copolymer architectures by sequential monomer addition via alcoholic ATRP at 20 degrees C; free-standing gels can be formed from 5% aqueous copolymer solutions at 37 degrees C.     

Heterogeneous equilibria and distribution of elements in the MCVD process for making optical fiber

Thermodynamic calculations have been performed on systems relevant to doped silica optical fiber processing: SiCl₄---GeCl₄---POCl₃---O₂, SiCl₄---BBr₃---O₂, O₂---H₂O---CH₄---SOCl₂---SiO₂ and O₂---H₂O---CH₄---CF₄---SiO₂ by using the SOLGASMIX-PV computer program. Equilibrium distributions of Ge, P, Si, B and H species are given.     

粗粒金刚石的生长及热力学条件的确定

 在石墨─金刚石单组分的两相平衡图理论基础上，从热力学理论观点出发，研究了形成金刚石晶体粒度和晶质的区域分布特征。重点论述粗粒高强金刚石晶体生长区域及热力学条件。以此为理论指导，进行生产试验，获得较好效果。     

自锁模钛宝石激光器谐振腔特性分析

研究了自锁模钛宝石激光器对谐振腔参数对于自锁模运转的影响，得到了腔的对称性，内腔曲率半径以及总腔长等参数对自锁模运转的影响关系，与实验相符。     

Automatic Parameters Selection for SVM Based on PSO

Motivated by the fact that automatic parameters selection for Support Vector Machine （SVM） is an important issue to make SVM practically useful and the common used Leave - One - Out （LO0） method is complex calculation and time consuming,an effective strategy for automatic parameters selection for SVM is proposed by using the Particle Swarm Optimization （PSO） in this paper. Simulation results of practice data model demonstrate the effectiveness and high efficiency of the proposed approach.