集体动力对大学生健康人格培养和塑造的影响

培养综合性强的、高素质的新一代大学生是当代高校的一项主要职能.在对大学生进行培养和教育的过程中我们应该考虑大学生的特殊性:大学生的特殊性不仅体现在生理方面,而且还体现在心理方面.大学生处在青年期向成人过渡的中间时期,其人格也处在发展的重要阶段--动荡阶段,我们要准确把握大学生的生理和心理特点,创造有利的条件,引导大学生的人格健康、积极、良好的发展.

有限深势阱中自旋-轨道耦合玻色-爱因斯坦凝聚的集体动力学

研究了一维有限深势阱中自旋-轨道耦合玻色-爱因斯坦凝聚的集体动力学,利用变分法得到了该系统的动力学方程和基态方程.首先,通过基态方程分析了系统基态平面波相和零动量相之间的量子相变,发现有限深势阱能很好地控制基态的相变;其次,对系统的动力学方程进行了线性化并得到了凝聚体集体动力学的解析解,发现自旋-轨道耦合会引起非简谐的集体动力学.当势阱足够弱的时候,凝聚体会逃逸出势阱,相应的集体动力学也会被阻尼.这些结论为操控玻色-爱因斯坦凝聚体的基态相变和动力学特性提供了理论指导.

平均场反馈下全局耦合Stuart-Landau极限环系统的可解集体动力学

耦合Stuart-Landau极限环系统为研究含振幅自由度的自持续振荡系统同步相变和集体动力学提供了一个重要的范式模型.本文研究了平均场反馈下全局耦合Stuart-Landau极限环系统中3种典型的可解集体动力学:非相干态、振幅死亡及锁频态.在热力学极限N→∞情形下,利用非相干态线性稳定性分析揭示了耦合系统中同步发生的临界条件,发现了增强平均场反馈强度可使得耦合系统在更小的扩散耦合强度下出现同步相变行为;通过对振幅死亡态的线性稳定性分析得到了参数空间中振幅死亡的稳定区,发现了平均场反馈强度可有效地消除耦合系统中的振幅死亡现象;从理论上分析了锁频态的存在性条件,并从锁频态序参量的自洽关系中推导出了振幅死亡区的边界线.本文的研究揭示了平均场反馈对耦合非线性系统中集体行为的动力学控制作用,加深了平均场反馈技术对耦合诱导的集体行为影响的理解,进一步阐释了复杂耦合系统中自组织行为的涌现规律与机制.

大学生思想政治教育工作中集体塑造模式的构建

通过对传统思想政治教育工作的反思和理论审视,本文明确提出＂集体塑造＂这一全新思想政治工作概念。这是一个工作理念突破,但实践和研究的重点是思想政治教育工作模式的重新构建。在模式重构过程中,不断激发个体成长成才需求,诱导集体动力的生成,构建有效的集体成长成才动力支持体系是最为关键的环节。

大学生思想政治教育研练式教学的理论思考

大学生思想政治教育研练式教学作为一种创新的高校思政课实践教学模式,它有自身的价值追求,它关注的是学生的需要,为学生创设的是开放、民主、共享、平等的学习环境,受到广大学生的欢迎。它培养人的目标直接指向处于改革开放攻坚阶段的我国对人才素质的需求,即培养的是有激情、个性和创造力的社会主义建设者和接班人。无论是从教育学角度,或是从心理学角度,还是从社会学角度,都能找到其理论依据及现实的立足点。

如何通过拓扑缺陷概念推进对凝聚态物质的理解?

从物理学角度,本文简要介绍凝聚态物质系统中拓扑缺陷的概念,并阐述拓扑缺陷如何深刻影响各类凝聚态系统的相变和集体行为等问题.

Mechanism of petroleum migration and accumulation in western China's superposed basins

In western China, most petroliferous basins are superposed due to their multi-periodic tectonic evolution, and the mechanisms of petroleum migration and accumulation are so complex that much more sophis- ticated methodologies are necessary for depiction of these mechanisms and identification of petroleum occurrences. For this purpose, in this article, a new methodology was formulated which includes： （I） ver- tical identification of petroleum migration and accumulation fluid dynamic systems in the superposed basins; （2） analysis of the effect of large scale regional faults and fault combinations on the fluids exchange between the vertically identified different systems; （3） analysis of petroleum migration and accumulation in each vertically identified system, and establishment of appropriate geological model of petroleum migration and accumulation for each vertically identified system. Using this methodology, the satisfactory results obtained in the Lunnan Uplift of Tarim Basin and Ludong Uplift of Jungar Basin case studies are： （1） existence of different vertical fluid dynamic systems in western China＇s superposed basins which are very necessary for understanding the mechanism of petroleum migration and accumu- lation; （2） in deep system, long-distance lateral petroleum migration and accumulation mainly take place along the long time exposed unconformity with weathered, fractured or karst reservoir rocks; （3） regio- nal faults are the main conducts for fluids migration from deep system up to middle and/or upper sys- tems. As to middle and/or upper systems, regional faults play a role of ＂petroleum source＂. Small faults within middle and/or upper systems conduct petroleum to carrier beds with less impeding force; （4） petroleum migrated from deep system vertically up to middle and/or upper systems will migrate lat- erally in carrier beds of these systems and accumulate to form nools near or far from faults.

Accurate level set method for simulations of liquid atomization

Computational fluid dynamics is an efficient numerical approach for spray atomization study, but it is challenging to accurately capture the gas-liquid interface. In this work, an accurate conservative level set method is intro- duced to accurately track the gas-liquid interfaces in liquid atomization. To validate the capability of this method, binary drop collision and drop impacting on liquid film are investigated. The results are in good agreement with experiment observations. In addition, primary atomization （swirling sheet atomization） is studied using this method. To the swirling sheet atomization, it is found that Rayleigh-Taylor instability in the azimuthal direction causes the primary breakup of liquid sheet and complex vortex structures are clustered around the rim of the liq- uid sheet. The effects of central gas velocity and liquid-gas density ratio on atomization are also investigated. This work lays a solid foundation for further studvin~ the mechanism of s^rav atomization.

Computational fluid dynamics simulation of formaldehyde emission characteristics and its experimental validation in environment chamber

We investigated the effect of supply air rate and temperature on formaldehyde emission characteristics in an environment chamber.A three-dimensional computational fluid dynamics(CFD) chamber model for simulating formaldehyde emission in twelve different cases was developed for obtaining formaldehyde concentration by the area-weighted average method.Laboratory experiments were conducted in an environment chamber to validate the simulation results of twelve different cases and the formaldehyde concentration was measured by continuous sampling.The results show that there was good agreement between the model prediction and the experimental values within 4.3 difference for each case.The CFD simulation results varied in the range from 0.21 mg/m3 to 0.94 mg/m3,and the measuring results in the range from 0.17 mg/m3 to 0.87 mg/m3.The variation trend of formaldehyde concentration with supply air rate and temperature variation for CFD simulation and experiment measuring was consistent.With the existence of steady formaldehyde emission sources,formaldehyde concentration generally increased with the increase of temperature,and it decreased with the increase of air supply rate.We also provided some reasonable suggestions to reduce formaldehyde concentration and to improve indoor air quality for newly decorated rooms.

Polyethoxylation and polypropoxylation reactions：Kinetics,mass transfer and industrial reactor design

Ethoxylation and propoxylation reactions are performed in the industry to produce mainly non-ionic surfactants and ethylene oxide(EO)–propylene oxide(PO) copolymers.Both the reactions occur in gas–liquid reactors by feeding gaseous EO,PO or both into the reactor containing a solution of an alkaline catalyst(KOH or Na OH).Non-ionic surfactants are produced by using liquid starters like fatty alcohols,fatty acids or alkyl-phenols,while when the scope is to prepare EO–PO copolymers the starter can be a mono-or multi-functional alcohol of low molecular weight.Both reactions are strongly exothermic,and EO and PO,in some conditions,can give place to runaway and also to explosive side reactions.Therefore,the choice of a suitable reactor is a key factor for operating in safe conditions.A correct reactor design requires:(i) the knowledge of the kinetic laws governing the rates of the occurring reactions;(ii) the role of mass and heat transfer in affecting the reaction rate;(iii) the solubility of EO and PO in the reacting mixture with the non-ideality of the reacting solutions considered;(iv) the density of the reacting mixture.All these aspects have been studied by our research group for different starters of industrial interest,and the data collected by using semibatch well stirred laboratory reactors have been employed for the simulation of industrial reactors,in particular Gas–Liquid Spray Tower Loop Reactors.

Laser Light Scattering Study on Aggregation of Cellulose Diacetate in Acetone

We have investigated the properties of cellulose diacetate in solution by using laser light scattering. The cellulose diacetate molecules can form micelles and micellar clusters in acetone besides the individual chains. As the concentration increases, the average hydrodynamic radius （Rh） linearly increases, whereas the ratio of gyration radius to hydrodynamic radins 〈Rg〉/〈Rh〉 linearly decreases. It indicates that the micelles associate and form micellar clusters due to the intermolecular interactions.

The Neo-Zapatista Movement of Chiapas： Identities and Strategies

One of the collective phenomena that has allowed a theoretical debate on the social movements in the current context is the neo-Zapatista of Chiapas. From a discussion on some significant events and possible interpretations about their identities, strategies, demands and speeches, the aim is to place the movement in a structural dynamics that will acquire different views. In apparent confirmation of an ＂identitarian community of resistance＂, the neo-Zapatismo seems to move toward a new scenario, in which ＂your chance＂ is configured from its structural flexibility and fluidity. In this way, the neo-Zapatista movement seems to confirm that the theoretical antinomies on the social movements relating to the American school, its emphasis on ＂strategy＂ of collective actions, and the ones referring to the European version, emphasizing the dimension of ＂identity＂, cannot be considered completely contradictory. The neo-Zapatismo has shown that a particular strategy developed a specific corresponding identitarian construction, and vice versa.

Study on Simulation Method of Pipeline Networks' Dynamic Characteristic in Hydraulic Manifold Block

In the design of Hydraulic Manifold Blocks (HMB), dynamic performance of inner pipeline networks usually should be evaluated. To meet the design requirements, dynamic characteristic simulation is often needed. Based on comprehensive study on the existing simulation methods, a new method combined of Power Bond Graph(PBG) and Computational Fluid Dynamic (CFD) is proposed. In this method, flow field of typical channels inside HMB is analyzed with CFD to obtain the local resistance coefficients. Then, with these coefficients, a new sectional lumped-parameter model including kinetic friction factor is developed using PBG. A typical HMB design example is given and the comparison between the simulation and the experimental results demonstrates the feasibility and effectiveness of the proposed method.

Cluster Growth Through Monomer Adsorption Processes

We propose a monomer adsorption model, in which only the monomers are allowed to diffuse and adsorb onto other clusters. By means of the generalized rate equation we investigate the kinetic behavior of the system with a special rate kernel. For the system without monomer input, the concentration aj（t） of the Aj clusters （j 〉 1） asymptotically retains a nonzero quantity, while for the system with monomer input, it decays with time and vanishes finally. We also investigate the kinetics of an interesting model with fixed-rate monomer adsorption. For the ease without monomer source, the evolution of the system will halt at a finite time; while the system evolves infinitely in time in the case with monomer source. Finally, we also suggest a connection between the fixed-rate monomer adsorption systems and growing networks.

塔罗：《运动之动力和威力：社会运动、集体行动和政治》

从1789年的法国革命到1980年代末东欧巨变的200年间，整个世界经历了千百次民众起义。康乃尔大学政治学教授塔罗的近著——《运动之动力和威力》——是对这些运动规律性的总论。书中虽然偶尔提及一些影响深远的革命事件，但作者明确把革命归为别类，着重分析社会运动。此书之重要在于，它不仅仅论述了各式运动的方方面面，而且对西方近30多年集体行动研究成果作了精当的批判总结。

一个全局耦合不连续映像格子中的冻结化随机图案模式

本文研究了一类既不连续又不可逆分段线性映像构成的全局耦合映像格子系统中的一类典型集体动力学行为,即冻结化随机图案模式.计算了平均同步序参量和最大李雅普诺夫指数随耦合强度的变化.结果显示,当耦合强度超过某个阈值后,在给定动力学变量的初始下,系统几乎都能达到完全或部分同步状态,出现冻结化随机图案.这些现象表明,耦合映像格子系统中存在着多个共存的吸引子.因此,其冻结化图案的结构和分布敏感地依赖于格点动力学变量初始值的选取.感兴趣地是,即使当单映像处于混沌状态时,格点间的耦合仍能将系统调制到规则的运动状态,这种特征对于混沌控制具有重要的利用价值.上述丰富动力学行为的出现足由于单映像中不连续性和不可逆性相互作用的结果.

The effect of Lorentz-like force on collective flows of K+in Au+Au collisions at 1.5 Ge V/nucleon

Producing kaon mesons in heavy-ion collisions at beam energies below their threshold energy is an important way to investigate the properties of dense nuclear matter. In this study, based on the newly updated version of the ultrarelativistic quantum molecular dynamics model, we introduce the kaon-nucleon(KN) potential, including both the scalar and vector(also dubbed Lorentz-like)aspects. We revisit the influence of the KN potential on the collective flow of K+mesons produced in Au+Au collisions at Elab= 1.5 Ge V/nucleon and find that the contribution of the newly included Lorentz-like force is very important, particulary for describing the directed flow of K+. Finally, the corresponding Kao S data of both directed and elliptic flows can be simultaneously reproduced well.

AN EFFICIENT RED BLOOD CELL MODEL IN THE FRAME OF IB-LBM AND ITS APPLICATION

A two-dinmnsional red blood cell （RBC） membrane model based on elastic and Euler- Bernoulli beam theories is introduced in the frame of immersed boundary-lattice Boltz- mann method （IB-LBM）. The effect of the flexible membrane is handled by the immersed boundary method in which the stress exerted by the RBC on the ambient fluid is spread onto the collocated grid points near the boundary. The fluid dynamics is obtained by solving the discrete lattice Boltzmann equation. A ＂ghost shape＂, to which the RBC returns when restoring, is introduced by prescribing a bending force along the bound- ary. Numerical examples involving tumbling, tank-treading and RBC aggregation in shear flow and deformation and restoration in poiseuille flow are presented to verify the method and illustrate its efficiency. As an application of the present method, a ten-RBC colony being compressed through a stenotic microvessel is studied focusing the cell-cell interaction strength. Quantitative comparisons of the pressure and velocity on speci- fled microvessel interfaces are made between each aggregation case. It reveals that the stronger aggregation may lead to more resistance against blood flow and result in higher pressure difference at the stenosis.

Theoretical methods for excited state dynamics of molecules and molecular aggregates

This contribution provides a summary of proposed theoretical and computational studies on excited state dynamics in molecular aggregates, as an important part of the National Natural Science Foundation (NNSF) Major Project entitled "Theoretical study of the low-lying electronic excited state for molecular aggregates". This study will focus on developments of novel methods to simulate excited state dynamics of molecular aggregates, with the aim of understanding several important chemical physics processes, and providing a solid foundation for predicting the opto-electronic properties of organic functional materials and devices. The contents of this study include: (1) The quantum chemical methods for electronic excited state and electronic couplings targeted for dynamics in molecular aggregates; (2) Methods to construct effective Hamiltonian models, and to solve their dynamics using system-bath approaches; (3) Non-adiabatic mixed quantum-classic methods targeted for molecular aggregates; (4) Theoretical studies of charge and energy transfer, and related spectroscopic phenomena in molecular aggregates.

Electron-plasmon interaction induced plasmonic-polaron band replication in epitaxial perovskite SrIrO_(3) films

Electron-boson interaction is fundamental to a thorough understanding of various exotic properties emerging in many-body physics. In photoemission spectroscopy, photoelectron emission due to photon absorption would trigger diverse collective excitations in solids, including the emergence of phonons,magnons, electron-hole pairs, and plasmons, which naturally provides a reliable pathway to study electron-boson couplings. While fingerprints of electron–phonon/-magnon interactions in this state-ofthe-art technique have been well investigated, much less is known about electron-plasmon coupling,and direct observation of the band renormalization solely due to electron-plasmon interactions is extremely challenging. Here by utilizing integrated oxide molecular-beam epitaxy and angle-resolved photoemission spectroscopy, we discover the long sought-after pure electron-plasmon couplinginduced low-lying plasmonic-polaron replica bands in epitaxial semimetallic SrIrO_(3) films, in which the characteristic low carrier concentration and narrow bandwidth combine to provide a unique platform where the electron-plasmon interaction can be investigated kinematically in photoemission spectroscopy. This finding enriches the forms of electron band normalization on collective modes in solids and demonstrates that, to obtain a complete understanding of the quasiparticle dynamics in 5 d electron systems, the electron-plasmon interaction should be considered on equal footing with the acknowledged electron–electron interaction and spin–orbit coupling.