多媒体辅助教学漫谈

本文以语文教学为例,语文多媒体教学既有优点,也有缺点,运用多媒体教学利大于弊.因此如何优化语文多媒体教学,使之扬长避短是语文教师今后要努力做的事.     

金庸小说的几点评析

本文从人物塑造、文化修养、语言风格及创作心态四方面对金庸小说进行了分析，进而指出在人物塑造方面的求真、以现代的观点诊释历史、对传统的白话文加以发展及将自由写作的精神与严肃的态度相结合是金庸小说沟通雅俗、超越古今的重要原因。     

网络课件在C程序设计语言教学中的应用

传统的黑白教学方法存在着一些弊端，导致学习效率降低、资源浪费。网络教学这种新型教育模式不仅大大提高了学习效率，而且很大程度地发挥了教育资源的作用。本文以C程序设计语言为例，阐述了制作网络课件的关键技术和实现技巧。     

旅游文学语言的文化价值——以云南红河州为例

旅游文学语言是指旅游文学作品中所使用的、体现文学性与审美性的、独具特色的语言。旅游文学语言中丰富的文化知识、丰厚的文学知识及多彩的民俗风情,对于扩大人们的见闻、增长人们的学识、提高人们的素养、丰富人们的生活,都有直接的作用。旅游文学语言的审美体验、文化韵味大大超过景物古迹本身给人的直接感受,留给人们无穷的回味。历代文人名士在云南红河这片美丽的土地上留下了许多优美的旅游文学作品,这些旅游文学作品中的语言既体现中原文化又体现边地文化的特征,具有独特的美学价值、认识价值、宣传价值和社会价值。     

在语文学习中发展盲生的个性

面向21世纪,培养高素质的创新人才,需要强化个性教育。盲生因其视觉的缺陷,在接受教育时个性发展受到限制。在语文学习中,我们可以从以下四方面来尝试,以便更好地发展盲生的个性。1.丰富内容,使盲生在语文学习时具有选择性。2。留出空间,让盲生在语文学习中独立感悟。3.合理引导,使盲生思维能力自由独特。4.走进生活,让盲生在实践中锻炼个性。     

Application of SDL in the Digital System Design

As a standardized formal language, the SDL has widely been used in the software development. In order to extend its application field, it has been explored to use in hardware design.This paper gives a logical gate circuit-and gate as an example to explain the method of applying SDL to describe and simulate/validate the hardware characters by the SDT tool. The various logic circuits or digital circuits may be made to the SDL packages because the SDL supports the object oriented technology. These packages can be directly invoked in the design of the complex digital system, so it is possible to describe and simulate/validate the complex digital system.The experiment has proved that the application of SDL for hardware design is feasible and rather convenient.     

Reproductive Behavior of Hexaploid/Diploid Wheat Hybrids 1

The bottleneck restricting introgression of useful genes directly from diploid into hexaploid wheats is the low number of BC₁F₁ seeds obtained. In crosses between hexaploid wheat (Triticum aestivum L.; AABBDD) and Aegilops squarrosa L. (DD) or T. urartu Thum. (AA), this bottleneck may be overcome simply by pollinating a sufficient number of F₁ spikes. However, hybrids between hexaploid wheat cultivars (T. aestivum) and T. monococcum L. (AA) generally are highly female-sterile, often having no pistils. One T. monococcum accession, PI 355520, when crossed with T. aestivum, produced hybrids with female fertility in the same range as that of T. aestivum/A. squarrosa or T. aestivum/T. urartu hybrids, ca. 0.5 to 1.0 backcross seed per spike. We found that female fertility was controlled by two duplicate genes in PI 355520, and that this accession can be used as a bridging parent to introgress genes from other T. monococcum accessions into hexaploid wheat. Pairing of homologous chromosomes was less frequent and weaker in such crosses than in T. aestivum/A. squarrosa crosses, but homoeologous bivalents occurred at a rate of almost 0.5 II per cell. Restitution division was detected in crosses involving all three diploid species and was confirmed cytologically in crosses with PI 355520. Chromosome numbers of BC₁F₁ plants ranged from 35 to 67; plants with 49 or more chromosomes occurred at frequencies of 0.09 to 0.21 among progeny of A. squarrosa and T. urartu and 0.29 in progeny of T. aestivum/T. monococcum crosses involving PI 355520. These results are consistent with those of previous studies, demonstrating the potential of direct Hexaploid/diploid crosses for rapidly introgressing useful genes into Hexaploid wheat with minimum disturbance of the background genotype.     

一种基于可编程逻辑器件的液位测量装置的设计

采用CYZ302型液位式传感器和可编程逻辑器件以及数码管来设计硬件,设计了一种液位测量装置。实验分析显示,该设计可以提高测量精度。同时,该系统也可以用于除水之外其他液体的液位测量。实验结果表明,该装置可以满足一般的液位测量要求。     

电控发动机尾气检测与故障诊断的研究

为寻求根据汽车尾气参数来诊断汽车故障的方法，利用径向基函数（RBF）神经网络，对丰田雷克萨斯（LEXUS）400电控发动机进行故障诊断研究。研究结果表明，径向基函数神经网络对发动机故障的诊断是迅速、准确的。