二叉排序树上删除结点算法的研究     

黄淑芹  张海 《通化师范学院学报》2014,(12):46-48

详细分析了文献[1]中二叉排序树的查找、插入、删除操作。文献[1]先是实现了查找算法,调用查找算法实现插入操作,当查找不成功时插入结点。对于删除操作,是在二叉排序树上查找成功时删除结点,并详细描述了删除结点时的三种情况,其中分析了双亲结点指针的变化,而在具体实现时没有像插入操作那样直接调用查找算法,而是借助于递归和引用控制删除结点和双亲结点的关系及双亲结点指针的变化,在查找的过程中实现删除,边查找边删除。这种不一致性给很多读者带来了疑惑。该文针对该问题提出基于查找算法的删除算法,该算法显式地体现了删除结点时双亲结点指针的变化,一方面和文字描述部分一致,同时又和插入操作具有统一性,便于读者更好地理解二叉排序树上的删除操作。  相似文献   

新建地方本科院校视觉识别系统评价体系构建研究——以怀化学院为例     

杨丹 《怀化师专学报》2014,(3):116-119

通过对问卷中的数据进行因子分析和处理,找出了在怀化学院视觉识别系统建设中起重要影响作用的因素,确定了视觉识别系统评价指标内容和结构。并进一步计算各因子方差贡献率和因子负荷量在总量中的比例,确定了指标的权重,最终建立了怀化学院视觉识别系统评价指标评价指标体系。  相似文献   

基于虚拟仪器的综合实验室平台探索     

陈学军  徐明铭 《实验室研究与探索》2014,33(10):250-253

针对单一课程实验不利于实验室资源整合,探索和构建一个能够完成多门课程实验的虚拟仪器综合实验室平台,基于校园网实现实验室硬件资源共享,达到学生可通过网络远程操作实验;着重介绍了该综合实验室平台结构模式和平台软件设计,基于虚拟仪器技术,整合现有实验室硬件资源,设计多科性实验模块,最终实现了该综合实验室平台系统。实验结果表明,该综合实验室平台不仅实现了多门课程实验室合并,硬件仪器资源共享,而且促进了实验教学发展,同时还为学生提供了一个可以进行创新实验设计的网络平台。  相似文献   

基于树型结构的数据库管理软件设计     

杨帆  ;沈来信 《黄山高等专科学校学报》2014,(3):38-41

数据库的可视化管理和状态监控在数据库的开发与维护中起到重要的作用,设计一种基于树型结构的友好的用户操作界面,包括数据库的连接、数据库中表、视图、存储过程的各种操作到数据库与表的监控,使得数据库的状态信息和操作过程更加直观.实践表明基于用户友好界面的数据库管理软件有很好地实用性和有效性.  相似文献   

Peer relationships and interaction between students with visual impairments and their sighted peers at Sirigu Senior High School in Ghana     

Alexander Gariba  Adam Awini 《British Journal of Special Education》2023,50(3):355-378

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Complexity of visual learning material moderates the effects of instructor's beat gestures and head nods in video lectures     

《Learning and Instruction》2022

Instructors often show rhythmic movements with speech in video lectures. However, the effects of these movements have not been tested in video lectures with an instructor and visual learning material. Results of Experiment 1 showed students in the beat gestures and head nods conditions showed significantly less attention to the visual learning material, more attention to the instructor, whereas in the beat gestures + head nods condition drew significantly more attention to both. In Experiment 2 we tested whether the complexity of the visual learning material moderated the effects of rhythmic movements on students’ learning. When the presentation was simple, students in the head nods + beat gestures condition showed more positive interaction, and significantly better recall and transfer. The results have implications for video designing: if an instructor and simple learning material are visible, she is encouraged to show beat gestures and head nods to mark important information.  相似文献   

A Take on a Gothic Poem: Tablet Film-making and Literary Texts     

Theo Bryer  Morlette Lindsay  Rebecca Wilson 《Changing English: An International Journal of English Teaching》2014,21(3):235-251

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Perceptual Literacy and the Construction of Significant Meanings within Art Education     

Beatriz Tomsic Cerkez 《The International Journal of Art & Design Education》2014,33(2):272-285

In order to verify how important the ability to process visual images and sounds in a holistic way can be, we developed an experiment based on the production and reception of an art work that was conceived as a multi‐sensorial experience and implied a complex understanding of visual and auditory information. We departed from the idea that to foster processes that encourage constructions of significant meanings it is necessary to abandon vision/audio‐centric notions of objecthood and offer a general definition of the perceptual object. The test was realised between the participants after modifying the performance conditions: some could not see the visuals, some could not hear the sound and others could appreciate the performance as a whole. Considering the results, we could infer that only the possibility to ‘read’ the performance as a whole encouraged construction of significant meanings. It would be possible to upgrade the approach, turning visual literacy into perceptual literacy, to contextualise artistic production that stimulates hybrid sensitive experiences. The education of critical perceivers should also enable transformations in responses to different stimuli. This is important if we consider the individuality of each student, his or her needs, affinities, cultural background, gender and so on.  相似文献   

城市景观设计中的色彩表达     

郭林林 《湖南城市学院学报》2014,(2):55-57

景观设计是在城市环境中各视觉元素与周围空间组织的艺术,也是一种视觉艺术。作为视觉第一要素的色彩在现代城市生活中更是无处不在,因此,色彩是人们感知城市环境的重要因素。  相似文献   

基于自适应步长布谷鸟搜索算法优化的小波加权多模盲均衡算法     

郑亚强 《安徽技术师范学院学报》2014,(2):49-53

为了提高加权多模盲均衡算法对高阶QAM信号的盲均衡性能,本文提出了基于自适应步长布谷鸟搜索算法优化的正交小波加权多模盲均衡算法（ASCS-WT-WMMA）。新算法利用自适应步长布谷鸟搜索算法（ASCS）初始化均衡器的权向量,有效避免了权向量陷入局部极小值;利用小波变换（WT）降低信号自相关性;加权多模盲均衡算法（WMMA）利用由判决符号的指数幂构成的加权项调整代价函数中的模值。水声信道的MATLAB仿真实验结果表明,与小波多模盲均衡算法、小波加权多模盲均衡算法以及布谷鸟搜索算法优化的小波加权多模盲均衡算法比较,该算法收敛速度更快和稳态误差更小。  相似文献