Milky Quartz Bipolar Reduction and Lithic Miniaturization: Experimental Results and Archaeological Implications

We present experimental data examining the energetics and identification of axial bipolar reduction in contexts of lithic miniaturization on milky quartz. These experiments answer two specific questions. First, does bipolar reduction provide any benefits over freehand reduction? Second, can axial bipolar reduction be distinguished from freehand reduction? Our data show that bipolar reduction requires significantly less time to reduce a percentage unit of core mass and to produce a millimeter of cutting edge on milky quartz than freehand reduction. Milky quartz bipolar reduction surpasses even the cutting edge production efficiency of obsidian pressure blades. We outline a series of quantitative criteria for identifying bipolar cores and flakes. Our results show that bipolar cores and flakes can be distinguished from those produced using freehand reduction by quantifying platform crushing, distal flake rebound scars, bulb shearing, as well as axial, bipolar, and splintered flake terminations. Our results challenge the widely held perceptions about the wastefulness of bipolar reduction and provide clear guidelines for identifying this reduction strategy in archaeological milky quartz assemblages.     

民国时期华文教育本土化探析——以国语文教材的编写为视角

论文以民国时期大陆学人与东南亚学人所编东南亚华校国语教材为视角,探讨华文教育本土化问题。认为大陆学人所编东南亚华校国语教材的本土化倾向包括选材符合国外实际、稳妥处理敏感话题、教给儿童规范汉语及配以实用方便的教学法;东南亚学人所编东南亚华校国语教材的本土化倾向包括突出第二语言教学的特性、使用外语进行解释及强调国语文的特点。     

抗战时期陕甘宁边区的国民教育

陕甘宁边区的教育经历了曲折的探索过程,从旧教育模式到创立自己的教育模式,由强迫教育到尊重群众的自愿与需要,由包办到民办公助,形成了具有鲜明时代特色的教育体制。、国民教育培养出的毕业生成为社会的有用之才,提高了陕甘宁边区文化程度,培养了大量专门人才。抗战时期陕甘宁边区的教育从抗战的环境和边区的实际出发,坚持教育同抗战、同社会、同生产劳动相结合的方针,为抗战培养人才,消除了群众中的文盲、迷信、不卫生的习惯,解决了群众生产和生活中的实际问题,既推动了边区教育事业的发展,也但排了边区经济、社会的进步,为抗战作出了重要贡献。     

The Dover Boat—a Reconstruction Case-Study

The Bronze-Age Dover boat, reconstructed and published by Owain Roberts in 2004, is discussed in regard to the general considerations of reconstructing ancient boat structures in the previous paper. The archaeological evidence shows that the boat had a bottom shape different from that shown in the 2004 reconstruction, and various other aspects, such as the general shape and strength of the hull and the calculation of potential speed when paddled, are questioned, partly drawing on the author's experience with the reconstruction of the Hjortspring boat. A re-assessment of the evidence is called for before any attempts to build a full-scale version of the Dover boat for sea-trials.
© 2006 The Author     

英语教学史百年回顾——改革运动前后语法翻译法与自然法的变迁

改革运动(Reform Movement)是指1882～1904期间主要在欧洲掀起的外语教学改革。回顾改革运动前后语法翻译法与自然法的变迁,时间跨度在一百年以上,为现在语言教育研究人员提供一些外语教育研究的理论基础,希望语言教学和研究者可以从中找出更多的教学发现从而提高现代语言教学质量。     

中学语文教学与创新教育

创新教育需要渗透到各科教学中。语文学科也毫不例外，并且只有对本学科不断创新，不断注入活水，它才有发展前途，才有存在的必要。语文教学法进行的是母语教学，是一门基础性的、工具性的学科教学。     

Empirical Formulation for Estimating the Fundamental Frequency of Slender Masonry Structures

The fundamental frequency of a structure enables better assessment of its seismic demand for an efficient design and planning of its maintenance and retrofit strategy. The frequency is independent of the type of external loads, however, depends on structural stiffness, mass, damping and boundary conditions. In the case of slender masonry structures such as towers, minarets chimneys, and pagoda temples, it is influenced by mass and stiffness distribution, connection to adjacent structures, material properties, aspect ratio and slenderness ratio. In this present article, the data collected from various literature reviews on the slender masonry structures regarding dynamic, geometrical, and mechanical characteristics have been correlated to identify the major parameters influencing the fundamental frequency of such structures. The database has been used for developing an empirical formulation for predicting the fundamental frequency of such structures. The comparison between the experimental fundamental frequencies and the estimated fundamental frequencies are carried out in order to define reliability and accuracy of these empirical formulae.     

对高校教学管理科学化问题的思考

高校教学管理的科学化是高校教学工作、教学管理工作发展的必然要求,也是高校提高教育质量的基拳保证。本文就高校教学管理科学化的作用、内容、基础、关键、保障等方面进行了粗略的探讨。