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王玉霞 《楚雄师范学院学报》2007,22(6):7-11
自相似分形集的构造在实际中没有一个行之有效的方法。在这篇文章中,针对一类自相似分形集的构造做了研究,提出了从自相似压缩映射的不动点集出发,可方便地构造其自相似分形集,并用若干实例说明此方法。 相似文献
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《赣南师范学院学报》2016,(6):45-49
作为一类复杂目标,飞机的非刚体颤动、姿态角变化以及机上活动部件的旋转都将对低分辨雷达回波产生复杂的非线性调制,对回波进行分形建模可以对产生回波结构的动力学特征进行精细刻画.在介绍自仿射分形理论的基础上,采用自仿射分形表示方法对实测低分辨雷达飞机目标回波数据进行了建模,并对自仿射分形特征在常规低分辨雷达体制下目标分类和辨识中的应用进行了研究.实验结果表明,自仿射分形表示方法可以对低分辨雷达飞机目标回波进行有效建模,且自仿射分形特征可以有效地用于飞机目标的分类和识别. 相似文献
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王春敏 《佳木斯教育学院学报》2013,(5):475-477
混合多重分形分析主要研究有限个概率测度的同步行为,自共形测度是共形映射下的测度不变量.本文给出了有限个随机自共形测度的混合多重分形的描述及相关性质. 相似文献
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在二纺相空间对高能强子-强子碰撞末态粒子的阶乘矩进行了研究,验证了高能粒子碰撞末态粒子相间二维自仿射分形的性质,测定了其分形指数。 相似文献
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分形(Fractal)哲学 总被引:1,自引:0,他引:1
刘和平 《河北师范大学学报(哲学社会科学版)》1994,(3)
本文论述分形哲学研究的必要性和历史意义,围绕着分形哲学的核心概念──信息论述分形哲学的基本原理,以期初步完成分形哲学体系的奠基性研究。 相似文献
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构造了一类自相似分形 ,利用满足开集条件的压缩自相似映射的性质 ,给出它们的Hausdorff维数s =ln6k/ln( 1/ε) . 相似文献
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分形几何学作为当今活跃在科学领域和风靡世界的新理论与新学科,它也是一种方法论。分形作为一门新兴的交叉学科满足了艺术多元化的需求。分形图案将几何美学与视觉形态融为一体。分形几何学利用其的自相似性,可以构造出千变万化而又具有任意高分辨率结构的艺术图案,被民众广泛关注。分形几何学作为科学与艺术交融的载体,已成为当今世界科学文化发展的一大热点。 相似文献
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费聿辉 《临沂师范学院学报》2001,23(5):1-3
从主客体关系来看,现象是认识活动的直接对象物,是主客体相互作用的直接产物。 现象的生成条件是:第一,客观条件。包括物自体(客观事物)、时间、空间和环境等。第二,主体条件。 指主体的感官功能、心理、情绪、意志、知识和理性等。第三,观察仪器对于现象的生成具有重要意义。 相似文献
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James P. McDaniel 《Quarterly Journal of Speech》2013,99(1):48-66
This essay attempts to counter the dreariness of postmodern critique and culture by locating the vital force of phantasy, rhetoric, argument, hope, and memory in contemporary public affairs. More particularly, it engages recent controversies about collective memory and the FDR memorial statue especially to generate a greater sensitivity to the fact that we are agents (and not just dupes) of history. The body, symbolic and material, is a core site for the history, theory, and practice of democracy, I argue, and is the hard kernel of collective identification and division. Methodologically, the essay fuses Aristotle and Lacan's ideas about phantasy as a perceptual device, which gages and creates public and personal desire, as an analytic frame for the study of public discourse. 相似文献
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Information is presented about the organization of graduate studies, based on questionnaire responses of 582 coordinators of Canadian graduate programs. These coordinators, who were representative of disciplines and geographic regions, provided information about a wide range of matters, including enrolments, staff, admissions, supervision, research, publications, financial support, teaching experience, and completion rates and times. Many substantial differences were noted among the percentage frequencies of responses for departments classified by discipline and size. For example, students were perceived to choose their doctoral theses topics themselves much more frequently in education, social sciences, and humanities than in engineering, medical sciences, physical sciences, and biological sciences. Also, departments with smaller numbers of full-time graduate students tended to provide all doctoral students, with some teaching experience to a greater extent than did larger departments. 相似文献
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《British Journal of Educational Studies》1997,45(1):83-116
Buckingham, David Moving Images: Understanding Children's Emotional Responses to Television
Aldrich, Richard (ed) In History and in Education: Essays presented to Peter Gordon
Kohli, Wendy (ed) Critical Conversations in Philosophy of Education
Griffiths, Morwenna Feminisms and the Self: the web of identity
Fryer, Marilyn Creative Teaching and Learning
Atkinson, Paul; Davies, Brian and Delamont, Sara (eds) Discourse and Reproduction: Essays in Honour of Basil Bernstein
Slee, Roger Changing Theories and Practices of Discipline
Woods, Peter and Jeffrey, Bob Teachable Moments: The Art of Teaching in Primary Schools
Best, Ron (ed) Education, Spirituality and the Whole Child
Bassey, Michael Creating Education Through Research
Higham, Jeremy; Sharp, Paul and Yeomans, David The Emerging 16–19 Curriculum: Policy and Provision
Bruner, Jerome The Culture of Education
Halsall, Rob and Cockett, Mike (eds) Education and Training: Chaos or Coherence
McBride, Rob (ed) Teacher Education Policy
Wideen, Marvin F. and Grimmett, Peter P. (eds) Changing Times in Teacher Education
Nixon, Jon; Martin, Jane; McKeown, Penny and Ranson, Stewart Encouraging Learning: towards a theory of the learning school
Gewirtz, Sharon; Ball, Stephen, J. and Bowe, Richard Markets, Choice and Equity in Education 相似文献
Aldrich, Richard (ed) In History and in Education: Essays presented to Peter Gordon
Kohli, Wendy (ed) Critical Conversations in Philosophy of Education
Griffiths, Morwenna Feminisms and the Self: the web of identity
Fryer, Marilyn Creative Teaching and Learning
Atkinson, Paul; Davies, Brian and Delamont, Sara (eds) Discourse and Reproduction: Essays in Honour of Basil Bernstein
Slee, Roger Changing Theories and Practices of Discipline
Woods, Peter and Jeffrey, Bob Teachable Moments: The Art of Teaching in Primary Schools
Best, Ron (ed) Education, Spirituality and the Whole Child
Bassey, Michael Creating Education Through Research
Higham, Jeremy; Sharp, Paul and Yeomans, David The Emerging 16–19 Curriculum: Policy and Provision
Bruner, Jerome The Culture of Education
Halsall, Rob and Cockett, Mike (eds) Education and Training: Chaos or Coherence
McBride, Rob (ed) Teacher Education Policy
Wideen, Marvin F. and Grimmett, Peter P. (eds) Changing Times in Teacher Education
Nixon, Jon; Martin, Jane; McKeown, Penny and Ranson, Stewart Encouraging Learning: towards a theory of the learning school
Gewirtz, Sharon; Ball, Stephen, J. and Bowe, Richard Markets, Choice and Equity in Education 相似文献
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在网络安全中,越来越多的系统受到木马攻击,网络安全受到极大的冲击。本文作者希望通过对木马的攻击机制、攻击特点、攻击力、攻击步骤、伪装方法、传播途径、启动方式等进行全面的剖析,力求寻找在伪装、传播、启动等方面的共性,以进一步研究、制订出一整套新的、简便的、具有可操作性的木马检测、清除、诱捕及其防御策略。 相似文献
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井焕茹 《黑龙江教育学院学报》2005,24(2):147-148,150
在日语中,一个句子中同时出现两个以上“”或者“”的情况是屡见不鲜的。当一个句子里同时有两个“”时,只能有一个提示主题(大主语),另一个只能表示对比,起强调作用。当强调的内容是状态、存在、动作等的主体(小主语)时,小主语用“”,强调的内容是谓语部分时,小主语用“”。当一个句子中同时有两个“”时,大主语的“”表示排他,是句子叙述的重点,强调在一定范围中,被判断状态、存在、动作的主体只有“”或者在一定范围中的最甚者;小主语的“”只单纯表示被判断状态、存在、动作的主体。 相似文献
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吕志江 《江苏广播电视大学学报》2011,(5):50-53
具有功能教化性、选题灵活性、内容独特性、场景庄重性、视听公益性等特征的公众讲座,是城乡社区教育的有利载体,是时代主题宣示的有效方式,是公众素养教育的有益形式,是构建和谐社会的有力手段。举办公众讲座要遵循导向性、贴近性、序列性、时令性、可听性等原则,采取思想理论引领和各类知识普及相结合、域外讲座资源和域内讲座资源相结合、知名学者和草根人士相结合、固定讲坛与流动巡讲相结合、财政拨款与社会捐助相结合等策略方法。 相似文献
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实践的自由与美的范畴 总被引:10,自引:0,他引:10
张玉能 《华中师范大学学报(人文社会科学版)》2003,42(1):47-53
人,作为个体的生存,从实践(以物质生产为中心)出发才逐步生成,而在实足走向创造的过程中,人们才不断达到一定的自由境界。正是人的实践-创造的自由使自然人化,人也人化,从而产生出人对现实的审美关系;这种审美关系体现对象之上就是美,而体现在人本身之上则是美感。人类的实践-创造的自由同样是一个历时性的过程和一个共时性的结构,因此,它不仅有不同的自由程度和不同的自由境界,而且还有自由,反自由,不自由,准自由等几个维度;与这些不同的自由给度相关便形成了美,丑,柔美,刚美,悲剧性,喜剧性,滑稽,幽默的相应的美的范畴,并形成各个美的范畴之间的过渡,转化,对应等关系,从而形成一个完整的美的范畴体系。 相似文献