吻鮈、圆筒吻鮈和福建纹胸鮡脾脏的组织学初步观察

吻鮈和圆筒吻鮈脾脏的组织结构很接近,均没有脾小梁和明显脾小结,红髓和白髓混合程度高,椭圆体明显。福建纹胸鮡脾脏具有明显的索状小梁;淋巴细胞的聚集程度较高,红髓和白髓的区分较明显。三种鱼脾脏组织中的黑色素巨噬细胞团均无周边层包裹。     

语篇分析与大学俄语写作教学

写作能力的培养是大学俄语教学中一个重要的环节在写作教学中，除了教授学生利用准备的词句来表达自己的思想，突出主题外，还要使学生采用一定的写作手法，按一定的逻辑顺序将符合文章主题的各种信息材料组织成主题突出，语义连贯，结构严谨，文章流畅的篇章结构。本文从培养学生的句子意识，段落意识和篇章意识三个方面来探讨提高写作能力问题。     

Aggregating concept map data to investigate the knowledge of beginning CS students

Concept maps have a long history in educational settings as a tool for teaching, learning, and assessing. As an assessment tool, they are predominantly used to extract the structural configuration of learners’ knowledge. This article presents an investigation of the knowledge structures of a large group of beginning CS students. The investigation is based on a method that collects, aggregates, and automatically analyzes the concept maps of a group of learners as a whole, to identify common structural configurations and differences in the learners’ knowledge. It shows that those students who have attended CS education in their secondary school life have, on average, configured their knowledge about typical core CS/OOP concepts differently. Also, artifacts of their particular CS curriculum are visible in their externalized knowledge. The data structures and analysis methods necessary for working with concept landscapes have been implemented as a GNU R package that is freely available.     

从布尔巴基学派的兴衰看数学结构学说的生命力

通过对数学结构学说的基本内容的简要介绍,着重对其产生、发展、衰落的短暂历史进行述评,分析这一学说在当今数学教学与研究中仍然发挥着独特的重要作用。     

紫藤和凌霄花的输水结构与水流速度的初步研究

用热脉冲技术，测定了2种藤本植物紫藤(Wistaria Sinensis)和凌霄花(Campsis Chinensis)茎干的液流速度。对两种植物的输水结构进行了解剖学研究，结果表明，两种植物一天中的液流速度变化小，维持在较高速度值上，径向液流速最大值的位点均位于靠近形成层的区域。二者输水结构也表现出了相似的特征，两树种的液流速度与其解剖结构有密切的关系。     

Development of Light Weight Structures to Provide Blast-Resistant Designs

In the past, blast-resistant designs for structures were often constructed with massive type structural systems, which relied more on brute strength than on finesse to achieve the required blast resistance. However, structures composed of COLD-FORMED steel components, such as sheet metal and metal studs, have shown great promise in providing blast resistance with the added benefits of low cost and ease of construction. Some examples of using such structures to provide containment for package handling facilities (PHF) are described in the paper for situations where blast containment is needed, such as a potential package bomb being discovered during the package vetting process. Results from tests and analytic data are used to illustrate aspects of design peculiar to such types of applications. Designs for specific capacities of PHF are described.     

从中希比较探究古希腊怀疑主义成因

怀疑主义在西方哲学史上占有十分重要的位置，而古希腊的怀疑主义是近代西方怀疑主义的渊源。从地理环境、经济结构和社会政治结构等三个方面进行中希之间的横向比较。以此剖析古希腊怀疑主义的成因。怀疑主义是推动西方社会发展的重要思想动力之一。怀疑主义的缺乏是导致中国古代社会长期陷入凝滞状态的思想原因之一。     

论信息化对我国产业结构的优化

调整和优化产业结构是十五期间经济发展的主线。本文认为，世纪之交国际国内经济的重大变化，决定了运用信息化优化产业结构具有客观必要性。信息技术、信息产业所具有的高渗透性、生长性，决定了它对产业结构调整、升级有着不可替代的作用。并提出了加快信息化、优化产业结构的对策建议。     

平板-异形柱结构设计方法的研究

阐述了平板—异形柱结构的适用范围、结构选型、材料选择、截面尺寸的确定和结构的内力分析方法,在此基础上得出了平板—异形柱结构构件的配筋计算方法和配筋构造要求,以供设计人员参考。     

浅谈砖砌体裂缝的起因与防治

根据建筑设计、施工经验,对砖墙体在地基不均匀沉降、温度变化、集中荷载作用下所引起的各种裂缝进行分析研究,提出防治的措施和建议,以供参考。