创设生物学信息结构图 强化长时记忆

通过创设生物学信息结构图,包括环形脑图、问题导引式知识结构图等,将知识梳理成环状分支,直观、形象地展示知识的内在联系,构建知识框架模型,再现趣味化学习情景,可强化学生的长时记忆,提高生物学知识的学习效率。

应用三重构图指导学生习作

三重构图是指意义构图、方法构图和信息构图。意义构图是指学生在图中绘制出自己写文章的目的,为习作选材确定范围。方法构图是让学生了解各类习作的一般性规律,掌握具体的习作方法,学会自主构图、据图作文。信息构图是以简洁、明了的关键词、图组、符号等表现头脑中出现的写作内容,从而直观地呈现习作的表层信息。这三个方面在绘制时螺旋交叉、互相联系,重视学生写作思维过程的展现、习作目标的整合、习作策略的掌握,使学生轻松愉快地达成习作任务,促进习作教学的"轻负高效"。

Registration Method for CT-MR Image Based on Mutual Information

Medical image registration is important in many medical applications. Registration method based on maximization of mutual information of voxel intensities is one of the most popular methods for 3-D multi-modality medical image registration. Generally, the optimization process is easily trapped in local maximum, resulting in wrong registration results. In order to find the correct optimum, a new multi-resolution approach for brain image registration based on normalized mutual information is proposed. In this method, to eliminate the effect of local optima, multi-scale wavelet transformation is adopted to extract the image edge features. Then the feature images are registered, and the result at this level is taken as the initial estimate for the registration of the original images. Three-dimensional volumes are used to test the algorithm. Experimental results show that the registration strategy proposed is a robust and efficient method which can reach sub-voxel accuracy and improve the optimization speed.

一种基于熵值的装备维修性评价模型

本文提出了一种基于熵值的装备维修性综合评价模型,该模型包括评价指标的熵值度量模型、装备维修信息结构图和行为控制图以及基于熵值的评价指标聚合模型等3个方面。本研究首先在分析装备维修一般过程和维修性评价内容的基础上,构建了定性指标和定量指标相结合的装备维修性评价指标体系,分析了维修任务复杂度、维修保障复杂度和基于熵值的维修效果的涵义;其次,给出了定性指标的熵值、定量指标的熵值以及基于权值的装备维修性熵值等计算方法;最后,给出一个装备维修性熵值评价的算例。算例结果表明,所提方法能够结合综合维修任务、维修保障和维修效果等多种影响因素进行装备维修性评价,不仅可以根据熵值大小对装备维修性水平进行高低排序,还可以分析影响装备维修性水平的瓶颈因素。

Development of 57 Novel Polymorphic Microsatellite Markers in Half-Smooth Tongue Sole(Cynoglossus semilaevis)

Half-smooth tongue sole (Cynoglossus semilaevis) is a promising species for aquaculture in China.The wild population of C. semilaevis is under threat from environmental factors. Microsatellite markers are very suitable for assessing genetic diversity. Four microsatellite-enriched libraries of half smooth tongue sole (Cynoglossus semilaevis) were constructed,from which 57 polymorphic microsatellites were isolated and characterized.The polymorphism of these microsatellites was assessed by genotyping in 30 individual fish.The number of alleles ranged from 2 to 11, with an average of 4.614 alleles per locus.The values of observed and expected heterozygosities ranged from 0.1000 to 1.0000 and from 0.0966 to 0.8847 respectively. Polymorphism information content (PIC) ranged from 0.0905 to 0.862.These markers would be useful for population structure assessment,genetic linkage map construction and parentage analysis for this species.

华语喜剧电影海报艺术特征分析

华语喜剧电影以其独特的特点受到中国大众的喜爱，电影海报是电影信息的集合，优秀的电影海报设计有助于电影更好地进行商业宣传，提升知名度。如何科学合理地整合影片信息，进行海报设计是值得思考的问题。本文通过对喜剧电影海报的构图信息、文字、色彩、风格、心理学等信息的分析，探究华语喜剧电影的艺术特征，为今后的电影海报设计提供经验和借鉴。