从世界平面发展史谈现代平面设计的民族化和国际化

随着市场经济的逐步发展 ,平面设计的国际化趋势日益凸显。在这过程中 ,平面设计又因国际化而出现了趋同化 ,其原因就在于忽略了平面设计本身的民族化特点。本文从世界平面设计的发展史角度论述了平面设计初期的民族化特点 ,以及在日益发展的国际化过程中 ,仍具有民族化特点     

西南地区层状地貌之研究

层状地貌的广泛分布形成了西南地区的一个主要特;证据表明本区发育了一级夷平面,二～三级剥蚀面及多级河流(湖滨)阶地,并构成了三种层状地貌结构,即:夷平面—剥蚀面—湖滨阶地—湖积平原—湖泊;夷平面—剥蚀面—河流阶地;夷平面—剥蚀面。     

西方美术史中的摄影与绘画

从历史的角度谈绘画与摄影之间相互纠葛与互相依赖关系 ,并预示现代艺术的发展将绘画与摄影两种平面艺术融合的可能     

金属目标在聚焦天线焦平面上的散射

研究了目标在聚焦口径天线焦点的散射问题。以一个金属目标和一个理想口径组成的系统为例，阐明了这类散射问题的电磁过程。研究结果表明，选择适当的口径分布，可以大大提高目标回波强度。文中给出大量计算结果，并对不同的口径分布做了比较，得到了若干具有工程意义的重要结论。     

构成在艺术设计中的重要性

三大构成被看作是现代艺术设计的流通语言,是视觉传达艺术重要的创作手法,是学生从基础绘画到艺术设计转换的重要阶段。学习构成其最终目的是拓展学生的设计思维、掌握理性和感性相结合的设计方法,为今后的专业设计奠定坚实的基础。构成教学,它涵盖了平面、色彩、空间等多个方面的内容,并且在平面设计和立体设计中均有具体体现。教师应该在教学中做好思想工作,让学生认识到构成在艺术设计专业中的重要性。     

Statistical techniques in stereology

Stereology typically concerns estimation of properties of a geometric structure from plane section information. This paperprovides a brief review of some statistical aspects of this rapidly developing field, with some reference to applications in the earth sciences. After an introductory discussion of the scope of stereology, section 2 briefly mentions results applicable when no assumptions can be made about the stochastic nature of the sampled matrix, statistical considerations then arising solelyfrom the ‘randomness’ of the plane section. The next two sections postulate embedded particles of specific shapes, the particular case of spheres being discussed in some detail.

References are made to results for ‘thin slices’ and other prob-ing mechanisms. Randomly located convex particles, of otherwise arbitrary shape, are discussed in section 5 and the review concludes with a specific application of stereological ideas to some data on neolithic mining.     

Finding a Noncrossing Steiner Forest in Plane Graphs Under a 2-Face Condition

Let G = (V,E) be a plane graph with nonnegative edge weights, and let be a family of k vertex sets , called nets. Then a noncrossing Steiner forest for in G is a set of k trees in G such that each tree connects all vertices, called terminals, in net N _i, any two trees in do not cross each other, and the sum of edge weights of all trees is minimum. In this paper we give an algorithm to find a noncrossing Steiner forest in a plane graph G for the case where all terminals in nets lie on any two of the face boundaries of G. The algorithm takes time if G has n vertices and each net contains a bounded number of terminals.     

The Incremental Group Testing Model for Gap Closing in Sequencing Long Molecules

In this paper, we propose the incremental group testing model for the gap closing problem, which assumes that we can tell the difference between the outcome of testing a subset S, and the outcome of testing S {x}. We also give improvements over currently best results in literature for some other models.     

结构助词“的”的使用规律

对结构助词“的”的使用规律。从句子、语义、语用三个平面加以考察。“的”的取舍对句法、语义结构关系产生影响时，必须用“的”；对句法、语义结构的改变没有影响时，“的”的取舍由语用上的需要决定。“的”的取舍在句法、语义规则上具有强制性，在语用规则上具有选择性。