量子信息实验设计的算符分析

定义了适用于单光子两偏振态的升降算符，并利用Fock空间算符的线性变换理论，研究了BS，PBS，半波片，四分之一波片以及 H 变换等，得出了它们的算符表示，找到了新的实验表述方式，从新的角度讨论了量子信息实验，如Teleportation，分析了光子输出的各态的几率.由此总结出了一种研究和设计量子信息实验的有效方法.      

阅读中外经典，享受读书乐趣

我们开展题为“阅读中国经典，与学生积淀传统文化，以及民族情感研究”的师生读经典诵经典活动以来，对教师而言，增强了人文底蕴．树立了高尚的师德，提高了语文教学水平，丰富了教育生活。对学生而言，促进了“精神发育”，培养了优良品德，提高了能力。     

明代中后期奢靡之风对社会发展的影响

明代中后期，消费凸显奢靡之风。尽管它冲击了封建礼制，有利于当时服务业与文化的发展，诱发了鲜活有力的新思想的萌生，但是它奔迟滞了明代中后期的社会发展。消费奢靡诱发了人们的消费欲望，使社会经济畸形发展，导致了重财重利的社会风：气，助长了统治阶级的贪欲，激化了阶级矛盾，是明代灭亡的重要因素之一。     

嵌套式建模支持

阐述了人的建模思维机制。引入等价关系和划分作为问题粒度研究的基础，定义了逆商集，使之与商集一起，构成了对问题不同粒度的完整描述，并讨论了粒度的性质，借助拓扑分析，给出了问题可分解、可细化和粗化、细化等一系列定义，在问题簇和模型簇概念的基础上，提出了嵌套式建模（支持）作为面向复杂系统的建模支持方法论，具体给出了其实施步骤，这是一个人机交互的启发式过程，将嵌套式建模与传统式建模作了比较，此外还作了若干说明。     

基于编码的生僻汉字输入方法理论与测试研究

在BNF范式编码的基础上，深入讨论了生僻汉字数字化处理问题。根据对生僻汉字部件的统计和分析，本文提出了基于编码的生僻汉字输入方法，建立了相应的生僻汉字部件库，实现了生僻汉字的数字存储和显示。此外，应用测试用例自动生成的方法，对输入方法进行了测试，表明该方法具有造字速度快，应用范围广，与现有字体兼容性强等优点，从而为生僻汉字的数字化提出了一个新的解决方案。     

一次迷失航向的科学实验

在上“电磁铁”这节课时，我先向同学们介绍了电磁铁的装置，然后便让同学们分组实验，来亲手做一做，看看大铁钉是不是能像磁铁一样吸起人头针。同学们马上就活动开了，不一会儿，同学们惊喜地发现他们做的电磁铁果真能吸起人头针了，“老师，我们组的电磁铁吸了5根大头针”，“老师，我们组吸了3根”，“我们组吸了6根”，“我们组2根”……     

碳酸钠半微量合成的优化

本文论述了以粗盐和碳酸氢铵为原料，经过粗盐的提纯，复分解等系列反应，以半微量的操作方法，合成碳酸钠。减少了药品用量，缩短了反应时间，降低了环境污染，严格训练了学生的操作技能，使学生的综合能力得到较大的提高。     

发展循环经济促进可持续发展

列举了发达国家为了经济的可持续发展，通过建立法律法规和优惠政策，保证循环经济的发展，促进了这些国家再生资源产业发展的事实和数据，分析了造成我国目前环境问题的成因，阐述了我国发展循环经济的重要意义，并提出了发展循环经济，促进可持续发展的建议。     

含冲击的车内道路噪声主动控制系统

针对道路噪声主动控制系统中，冲击噪声引起的鲁棒性问题，提出了一种对冲击噪声的主动控制方法。首先，进行了道路噪声采集试验，选取了4个最佳参考信号位置，并采集了道路冲击噪声的数据。然后，基于多通道自适应滤波算法，提出了归一化多通道自适应滤波算法和符号算法相结合的冲击噪声主动控制算法。其次，基于提出的冲击噪声主动控制算法，搭建了道路噪声主动控制系统仿真模型，使用采集到的冲击噪声信号和加速度信号进行了仿真分析。最后，使用选取的4个加速度信号和1个扬声器，控制驾驶员处的道路噪声，进行了道路冲击噪声主动控制试验，验证了方法的有效性。与原有算法相比，该算法的稳定性和降噪效果得到了较大的提升。     

北京教育学院“名校长工作室”研究员（连载十）

张佳春同志是北京市通州区运河中学校长兼党总支书记。20余年的校长经历，使他积累了丰富的办学经验，凝成了鲜明的办学思想，确立了高远的办学目标。他坚持“一切为了学生发展”的办学宗旨，以“创建人民满意的教育”为目标，构建了“以人为本”的管理模式。在他的领导下，学校营造了和谐发展的教育环境，构建了和谐发展的管理模式，打造了和谐发展的教师队伍，     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to