公共英语新版教材编写体验与认知

为了更好地配合和适应我国公共英语等级考试和教学的发展需要，新版公共英语教材经过重新编写即将面世。该系列教材在第一版的基础上无论从指导思想、内容、以及编排体例上都做出许多新的变化，内容选材上更加注重时代感、启发性、实用性和文化性，编排上追求系统性，科学性，开放性，以及可操作性。全书融入许多新的教学理念，必将更好地应用与服务于我国公共英语教学的实践。     

Anatomical societies find new ways to come together in a post-Covid world

The world has been turned upside down by a global health emergency caused by the Covid-19. Given the high contagiousness of the virus and the need to contain its spread, social distancing rules, self-isolation policies, and geographical lockdowns have been enforced globally. Over the pandemic emergency the majority of the planned in-person meetings and congresses of national and international anatomical societies have been postponed or canceled. It is unclear what the future holds, but times of crisis often present possibilities for re-thinking old ways to achieve a more critical approach. It has become increasingly clear that traditional in-person congress formats of scientific societies need to be reevaluated. Over the past year and a half, two types of congressional modalities have been trialed to address the challenge of the pandemic as far as scientific meetings are concerned: the fully virtual congress, in which case the conference program is live streamed to all of the attendees, and the hybrid congress, in which case some of the attendees physically participate at the congress's venue while others interact via a virtual platform. The current study set out to investigate the technical difficulties, social challenges, costs and sustainability, logistics and management issues linked to holding various types of congresses in the post-Covid world. Anatomical societies throughout the world are actively striving to reshape their response to the current global emergency and to uncover new types of conference modalities in the effort to keep scientific exchange alive and flourishing in the post-Covid era.     

2CUL Slavic: The View So Far

In fall 2016, the Columbia-Cornell collaboration in the area of Slavic & East European resource coordination and sharing celebrated its sixth year. The author reviews particulars of the development, implementation, and function of this program as well as some of the challenges that face such cross-institutional efforts.     

4-16世纪中国史家对于社会结构与历史演进的理解

历史认识中人本思想提升的一个理论结果,是史学家、思想家对于包括社会结构与历史演进等理论的思考获得深入。古代中国史学家、思想家对于社会结构与历史演进的理论思考,与早熟、发达的国家制度有关,与古代中国特有的史官制度及其文化形态、史学文化传统也有密切的关系。从公元4世纪到16世纪这1000多年观念的发展来看,史家对于社会结构的认识,大致延续了《史记》、《汉书》的传统,体现了大体一致的对社会结构的认识,即呈天、地、人、政治、经济、刑法、军事、政治制度、选官制度、文化的结构顺序。随着社会的发展,中国的史学家、思想家对于社会结构及其历史演进的理解亦不断深化,尤其是对社会经济及其历史意义的认识更是日益丰富。     

Science Letters:Discovery of ultrahigh-T spinel-garnet granulite with pure CO_2 fluid inclusions from the Altay orogenic belt, NW China

We first report discovery of the spinel-garnet-orthopyroxene granulite with pure CO2 fluid inclusions from the Fuyun region of the late Paleozoic Altay orogenic belt in Central Asia, NW China. The rock is characterized by an assemblage of garnet, orthopyroxene, spinel, cordierite, biotite, plagioclase and quartz. Symplectites of orthopyroxene and spinel, and orthopyroxene and cordierite indicate decompression under UHT conditions. Mineral chemistry shows that the or-thopyroxenes have high XMg and A12O3 contents (up to 9.23 wt%). Biotites are enriched in TiO2 and XMg and are stable under granulite facies conditions. The garnet and quartz from the rock carry monophase fluid inclusions which show peak melting temperatures of around -56.7℃, indicating a pure CO2 species being presented during the ultrahigh-T metamorphism in the Altay orogenic belt. The inclusions homogenize into a liquid phase at temperatures around 15.3-23.8℃ translating into CO2 densities of the order of 0.86-0.88 g/cm3. Based on prelim     

中国现代思想史上的"陶胡分歧"

陶行知与胡适的分歧贯穿了五四之后的近三十年中国现代思想史上的大事。二人之间的最初教育分歧不在教育观点本身,而是“教育界分歧”,始于1926年“庚款风波”;其次是30年代的政治9牾,基于两种基本爱国观的难于兼容,但非以政见分歧为主要内容;其三,双方主要的、根本的分歧是30年代形成的关于基本价值观——五四价值观的分歧。陶推崇一二九“大众”运动,反思并批判五四“小众”运动;由此出发,陶形成了自己的大众教育观,及总的大众价值体系,全面否定了新文化运动及胡在其中的历史地位。     

略论新文学运动对诗性的轻慢及后果

新诗在将近一百年的发展中,没有能取得古典诗歌那样的成就,原因固然是多方面的,但新文学运动初期轻慢诗性肯定是重要原因。轻慢诗体,将诗与文、诗与(白)话等同,新诗文体一直受到合法性质疑;轻慢诗语,单纯强调语言的工具性,忽视语言的诗性,将诗歌语言与日常语言及口语等同,抛弃语言传统,导致新诗语言浅白,与几千年的诗歌传统脱节;轻慢诗情,或以科学之真否定艺术之情,或缺少节制,走向滥情,致使诗歌矫饰空洞。     

企业数据库安全技术研究

本文分析了数据库系统的不安全因素.在简要介绍JAVA安全体系结构基础上结合JAAS来实现对用户身份的验证和授权以达到保护用户连接的目的、利用JSSE实现SSL隧道封装保护JDBC的传输,接着讨论了利用数据库管理系统提供的一些安全机制来加强数据库的安全.文章最后还提出了对高度机密的数据采用数据库加密的解决方案.     

"3+2"——法国教师教育新模式

“3 2”是法国推进面向21世纪教师教育改革的一种新模式。本文介绍了法国“3 2”新模式实施的背景,剖析了一元化承担初等学校教师和中等学校教师培养与研修的法国“教师教育大学院”(IUFM)的运作特点及其课程设置,并在此基础上探讨了“3 2”模式对我国教师教育模式改革的若干启示。     

N-甲基苯氨基-4,6-二甲氧基-1,3,5三嗪的合成与表征

目的:为了进一步研究与发展均三嗪衍生物的制备方法.方法:在丙酮介质中,三聚氯氰先后与N-甲基苯胺、甲醇反应,合成了N-甲基苯氨基-4,6-二甲氧基-1,3,5三嗪.结果:标题化合物经红外光谱和质谱对它进行了表征,筛选出了最佳的工艺条件.结论:制备方法简单,反应条件温和,效果良好.