关于信息科学和技术中常用量和单位的讨论

对信息科学与技术中所使用的一些量和单位符号进行讨论,并提出了规范化建议.     

自旋1/2量子受激转子中Planck常数调节的整数量子霍尔效应转变的有限尺寸标度分析

量子受激转子(quantum kicked rotor,QKR)是量子混沌研究中的重要模型之一。在自旋1/2的QKR中,调节等效Planck常数可以在动力学局域化相之间实现一系列相变,其形式与整数量子霍尔效应及其平台相变相似。研究这一相变的有限尺寸标度理论,并将其应用于自旋1/2的QKR模型。估计出相变的临界指数为ν=2.62(9),符合整数量子霍尔效应平台转变的普适类。     

美国计算机犯罪立法的发展与启示

计算机犯罪已严重危害了信息系统安全，各国政府也已认识到打击和惩罚计算机犯罪、保护信息系统安全的重要性。美国很早就将保护信息系统安全纳入了法治化的轨道，在打击计算机犯罪中也积累了丰富的经验。文章通过探讨美国计算机犯罪立法的历史沿革和最新发展，对信息系统安全的法治化进程中的规律进行总结，以期为我国的信息法制建设提供借鉴。     

Health science libraries in Sweden: new directions,expanding roles

Librarians in Sweden are facing huge challenges in meeting the demands of their organisations and users. This article looks at four key areas: coping with open science/open access initiatives; increasing demands from researchers for support doing systematic reviews; understanding user experiences in Swedish health science libraries; and the consequences of expanding roles for recruitment and continuing professional development. With regard to changing roles, there is an increasing shift from the generalist towards the expert role. The authors raise the issue as to how to prepare those new to the profession to the changing environment of health science libraries.     

浅析中国英语及其民族特色

随着我国对外开放力度的加大,在世界范围的影响日益扩大,中国英语之语言现象不仅出现的频率越来越高,而且出现的种类也更加纷繁复杂。因此,弄清中国英语的现状、了解其民族特色就显得十分重要。     

战国巨变与欧洲浪漫主义运动的现象关联

战国时代，是最具化发展活力、思想自由的时代。而从十八世纪开始的欧洲浪漫主义运动，为欧洲社会发展、思想进步、化繁荣提供了一个全新的起点。对比两个在空间上和时间上毫无关联的化现象，我们可以发现其中的相似性，进而认识到中西化在发展过程中实现化创新和社会进步的一些必然性的条件。     

三能级原子中相对位相阻尼引起的消相干

本文对量子纯态演化为混合态进行探讨。利用密度矩阵和Kraus理论对相对位相阻尼引起的消相干进行研究,计算出三能级原子相对位相阻尼引起消相干的密度矩阵,根据密度矩阵非对角元衰变规律,得出三能级原子的消相干特性。     

单模激光器的量子理论分析

给出了单模激光器的量子理论．针对两能级原子介质，研究激光器的三种工作状态，并将量子理论结果与兰姆的半经典理论结果进行比较．     

Cheating or cheated? Surviving secondary exit exams in a neoliberal era

Cheating on exams is a rampant and highly developed practice among youth in the Arab world, often involving elaborate networks, advanced technology and adult authorities. Rather than viewing cheating as mere laziness or immorality, this article interrogates the social meanings of cheating by comparing the practices and discourses of cheating on high-stakes high school exit exams – the tawjihi in Jordan and the Baccalauréat in Morocco. Using informal networks to obtain higher grades, and thereby better futures, cheating is one way youth contest the putative meritocracy of the state to reclaim a sense of control over their lives. Ironically, cheaters develop twenty-first century skills of collaboration, networking and creativity outside the school in order to evade the nation’s formal system of educational sorting. We argue that cheating illuminates the declining effectiveness of the public school in the nation-building project and the simultaneous emergence of the outcomes-oriented ‘neoliberal student’.     

量子计算中的一些组合数学问题

文章解决了量子计算中的一些组合数学问题。