排序方式: 共有135条查询结果,搜索用时 15 毫秒
41.
图的包装是一重要的图论概念并有着多方面的应用,本文用矩阵方法讨论图的包装问题,得到了两个同阶图可包装的充要条件. 相似文献
42.
高翔 《中国教育技术装备》2003,(7):25-26
介绍了用Authorware制作课件的最后一项打包与发行工作中容易出现的错误信息及须注意的问题。 相似文献
43.
给出了同阶图对{(p,p-1),(p,p-2)}及同阶树与(p,p-2)图可包装的充要条件。 相似文献
44.
针对矩形布局中的空间处理问题,根据布局空间的结构特点及变化规律,提出采用可行域算法求解矩形布局问题,并利用Visual C++6.0编程工具开发出具有实用意义的矩形智能布局系统。实例表明,该方法可以提高矩形布局问题的求解效率。 相似文献
45.
人生本身是戏剧的.从捕捉人生世相中的矛盾冲突,描摹客观性戏剧场面,传递人物戏剧性言行,构建诗剧等四个方面.我们可以清晰地看到,叶延滨在以情取胜的创作理念之后,逐渐呈现出追求以理取胜的诗美风格.诗人在戏剧性因素的生成、表现、途径等方面均做了不少积极的艺术探索,在戏剧冲突与诗歌力量的结合上标示了叶延滨诗作所达到的崭新高度. 相似文献
46.
47.
Steven W. Holloway 《Cataloging & classification quarterly》2013,51(7):571-591
AbstractLibrary of Congress Subject Headings (LCSH) geographic headings for the Southern Levant mirror the political investment of Congress and the American public in Middle East politics over the last thirty years. These LCSH headings contrast markedly with those established in other national libraries and independent value vocabularies, and global opinion regarding the legal status of the occupied territories. The author offers ways that libraries can “decolonize” their metadata in service of Sanford Berman's “access and equity.” 相似文献
48.
郭春霞 《苏州市职业大学学报》2014,(4):54-57
利用packing维数这一工具定义水平集Kα的(q,τ)-packing熵,并给出对于水平集Kα的packing熵与(q,τ)-packing二者之间的关系. 相似文献
49.
赵孟懿 《佳木斯教育学院学报》2012,(12):210-211
目前高职院校包装设计专业办学条件上、人才培养目标上、师资上普遍存在着问题,培养出来的学生缺乏实践操作能力,难以符合当今社会对人才培养的要求。包装设计是一门实践性很强的课程,重在培养学生的设计思维和动手能力。为此,教师首先转变教学观念,让教学面向生产,面向市场,最大限度地缩小课堂教学与实际工作的距离。 相似文献
50.
Li Wang Yu Li Xiao-Yu Yang Bo-Bo Zhang Nelle Ninane Henk J Busscher Zhi-Yi Hu Cyrille Delneuville Nan Jiang Hao Xie Gustaaf Van Tendeloo Tawfique Hasan Bao-Lian Su 《国家科学评论(英文版)》2021,8(4)
Like nanomaterials, bacteria have been unknowingly used for centuries. They hold significant economic potential for fuel and medicinal compound production. Their full exploitation, however, is impeded by low biological activity and stability in industrial reactors. Though cellular encapsulation addresses these limitations, cell survival is usually compromised due to shell-to-cell contacts and low permeability. Here, we report ordered packing of silica nanocolloids with organized, uniform and tunable nanoporosities for single cyanobacterium nanoencapsulation using protamine as an electrostatic template. A space between the capsule shell and the cell is created by controlled internalization of protamine, resulting in a highly ordered porous shell-void-cell structure formation. These unique yolk-shell nanostructures provide long-term cell viability with superior photosynthetic activities and resistance in harsh environments. In addition, engineering the colloidal packing allows tunable shell-pore diameter for size-dependent permeability and introduction of new functionalities for specific molecular recognition. Our strategy could significantly enhance the activity and stability of cyanobacteria for various nanobiotechnological applications. 相似文献