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1.
考虑定义在整点格网Ld上的参数为p的上临界Bernoulli渗流,研究无穷大开簇上构型的发生情况.用Λn表示一个给定的构型P在限制于框B(n)=[-n,n]d中的无穷大开簇上发生的次数,得到了关于Λn的强大数律和中心极限定理.  相似文献   

2.
分别对基于本原多项式的线性反馈移位寄存器结构进行设计,验证其能否生成M序列.对比可生成伪随机序列的寄存器与可生成M序列的硬件结构是否相同以及所生成的序列的周期性.验证本原多项式及其互补多项式均可生成M序列.验证内接型LFSR结构和外接型LFSR结构没有影响M序列的生成.验证了基于非本原多项式设计的线性反馈移位寄存器的序列周期数<2n-1,为非M序列.通过使用ModelSim仿真器进行仿真,仿真结果验证了本课题设计的正确性和有效性.  相似文献   

3.
文章把极限的夹逼准则思想应用到抛物型偏微分方程,通过引进上下解,构造出一串单调非增的上解序列和一串单调非减的下解序列,证明了半线性抛物型偏微分方程初边值问题解存在的唯一性。  相似文献   

4.
波罗的海好望角型船运价指数波动分析   总被引:2,自引:2,他引:0  
为提高国际干散货航运市场预测的可靠性,通过对国际干散货航运市场中波罗的海好望角型船市场运价指数(Baltic Capesize Index,BCI)序列以及对数收益率序列的平稳性、异方差性进行分析和检验,验证了BCI半月对数序列存在单位根,是非平稳序列,服从随机游走的假设.对BCI半月对数收益率序列进行单位根检验的结果表明,BCI半月对数收益率序列是平稳的.通过使用GARCH(1,1)模型分析发现,BCI半月对数收益率序列有明显的波动集聚效应.结论可用于国际干散货航运市场预测方法的改善.  相似文献   

5.
从代数角度讨论了加法型组合生成器输出序列的密码学特性,得到了其输出序列具有较长的周期、较高的线性复杂度、尖锐的自相关特性和弱的互相关特性,并具有相关免疫性等结果.  相似文献   

6.
为对远期运费协议(Forward Freight Agreement,FFA)市场的相关性进行研究,选取波罗的海干散货运价指数(Baltic Dry Index,BDI)及FFA市场的巴拿马型船期租航线运价和灵便型船期租运价为研究对象,先用AR(p)-GARCH模型对序列进行拟合,建立拟合后的残差序列的Copula模型,通过Copula模型对序列的相关程度和相关模式进行分析.结果表明,FFA市场内部不同航线远期运价之间相关性很强,并且存在很强的尾部相关性;BDI现货指数与远期运价的相关性弱,尾部相关性也较弱.  相似文献   

7.
Miracast技术的诞生,对当前普遍使用的"基础型"班班通多媒体教学播放设备的更新与换代给予了强大的技术支持。文中对Miracast技术的由来,怎样利用Miracast技术搭建新一代"智慧型"班班通多媒体教学播放平台及"智慧型"的多媒体教学播放平台的优点进行了分析与梳理。  相似文献   

8.
利用COⅠ的通用引物,采用PCR法对黑带食蚜蝇(Episyrphus balteatus)线粒体DNA序列进行扩增、测序及比对;4个不同地区的种群分析结果表明:1共获得1041个bp的DNA序列,A、T、G、C的比例分别为40.2%、30.1%、13.1%、16.6%,表现出明显的A+T偏倚性;2经过与GENEBANK已知序列比对,该片断位于线粒体的COⅠ~tRNALEU~COⅡ区域;3共检测到8处(N=20)碱基变异,已经产生了遗传差异,形成1个共有单倍型、7个特有单倍型;4NETWORK分析表明,已经产生明显的遗传分化.  相似文献   

9.
本文根据一个正序列{y_n}满足差分不等式 y_(n+1)≤Q_ny_n-F_n所得的结论,对一类中立型非线性差分方程推导了正解不存在定理。  相似文献   

10.
高通量测序技术通过几个间段的发展已经能够产生海量的基因组序列。与此同时,高通量测序技术本身也深刻地改变着作物育种的策略和途径:分子标记的辅助选择将极大地提高育种的选择效率;基于重测序技术的单倍型分析能够快速准确地研究种质资源;对没作物进行从头测序,提供大量的序列信息用于育种实践。  相似文献   

11.
Since the late 1960s,culture has been considered tighter with communication.Culture IS based on the community of communication.Communication involves people and their environment.Thus culture is an important factor in communication.Today with modem economic and technological development,intercultural communication is mole important than ever before. When people from different cultural background communicate with each other,their social stereotype pattern of behavior, their habits of language and thought differ from one another,because these are the possible factors that affect intercultural communications.Culture norms also change,culture may be transferred as signs but we have to study and understand the above carefially.  相似文献   

12.
The thesis mainly discusses the character of the heroine in Charlotte Brontes famous novel "Jane Eyre". There are three major parts-introduction,analysis which is the main body of the thesis,and conclusion.Jane Eyre,the heroine,is a new woman image who requires independence equality and freedom.The thesis just analyzes Janes these rebellious characters through four peroods of her experiences.First,in her childhood,she has shown her rebellious spirit.As an orphan,Jane suffers a lot of misery.Not only her aunt treats her cruelly,her cousins despise her,but also do servants have a prejudice against her.In Janes immature heart, she is unwilling to bear ill treatment.She rebels them bravely.Second,when she studies at Lowood,her rebellious spirit is exposed furtherly.Her view doest stay in Mrs Reeds,instead turns to the whole society.She makes hypocrisy of so-called charity to be discovered completely.At the same time,she declares her independent,equal rebellious thought to her friend-Helldn who endures oppression willingly.Third,she,as a governess in Thornfield Hall falls in love with Rochester-her master.During this period,her thought grows into maturity.Thought she loves him passionately,she never loses her dignity and independence for him.When she knows his mad wife still lives,she makes up her mind to leave him.For she doesnt want to become his mistress.Fourth,her refusal of St Johns proposal of marriage depicts Janes character.She knows John does not love her at all and his purpose of marriage is only to perform his great task missionary.Jane does want to become a sacrifice.She breaks traditional morality,then she goes back to Rochester.  相似文献   

13.
The context of a word consists of the other words surrounding it and the situation in which it is used.When we come across a new word in our reading,instead of looking it up in a dictionary for its definition,we can guess its meaning from its context.  相似文献   

14.
当代中国武术经历了时代的沧桑和变迁,在历经了文化和历史的发展与洗礼之后,依然发展、繁衍至今。在这样一个漫长的过程中,伴随着以社会环境和社会人群价值取向为主的变迁与变化,当代中国武术的发展与当代社会的发展正逐渐的呈现出某些相背离和不和谐的表象。通过研究,我们发觉中国武术中原本一些内在的东西正在不断的被遗忘,正在不断的流逝。本文试从中国武术在当代发展中的问题境域入手,解读中国武术在当今世界和社会中存在的一些问题,希望能够从中找到中国武术发展的"合法性"或"合时性"的内在依据,以挺立中国武术的脊梁。  相似文献   

15.
Introduction Whatisculture?Toputitsimply,culturemeansthe totalwayoflifeofaperson.Thissimpledefinitionimplies thatculturereferstothepattersofcustoms,traditions,socialhabits,values,beliefsandlanguageofasociety.As cultureissoinclusive,itincludesvirtuallyeverythingthat agroupofpeoplethink,say,doandmake.Followingthedefinitionofsociologists,theterm culturereferstothetotalpatternofbeliefs,customs,institutions,objects,andcharacterizesthelifeofhuman community.“Cultureconsistsofallthesharedproductsof …  相似文献   

16.
"Midnight"is a poem written by Archibald·Lampman,a Canadian poet,who loved nature very much,but his poor health prevents him from being very active in the outdoor life.So he is often the quite,thoughtful observer of nature in his poems.This article mainly talks about how to appreciate the poem in the following aspects:word selecting,rhyme,sentence structure and atmosphere.After reading this poem,we cannot get rid of the air of horror and mystery."Midnight" reveals another aspect of the nature:wild,rough and unknown.There is something else in the nature that can awe human beings even though we don't know what it is.  相似文献   

17.
Chapter Ⅰ Introduction Sitting in the rocking chair,Carrie dreams her future.This is the deep impression the novel"Sister Carrie"gives us,which is written by Theodore Dreiser(1871-1945),the great American realism writer.  相似文献   

18.
国外锻炼行为理论研究综述   总被引:22,自引:2,他引:22  
正确认识和促进与健康有关的锻炼行为必须以合理的理论为基础。对国外锻炼心理学领域与健康有关的锻炼行为理论和模型:健康信念模型、保护动机模型、合理行为模型、计划行为模型、自我决定模型、社会认知模型、自我效能模型和跨理论模型进行分析,评价其成功和不足的地方。在前人研究的基础上提出态度-行为综合模型作为研究锻炼行为参与新的研究方向。  相似文献   

19.
我国普通高等院校体育教育效果调查与分析   总被引:8,自引:0,他引:8  
以全国高等教育科学"十五"规划重点课题<对我国普通高校体育教育效果的调查>调查结果为依据,通过调查大学生对高校体育教育的态度、认识水平、学习的获得和养成性等方面情况,分析了21世纪初以"健康第一"为指导思想的高校体育教育对在校大学生的作用和影响,发现和揭示了高校体育教育过程中存在于深层与潜在的问题,并以此为基础,对高等学校体育教育的效果进行客观评价,为推进高等院校体育的进一步改革提供依据.  相似文献   

20.
同义词的语用研究   总被引:1,自引:0,他引:1  
从语义学的角度来研究同义词只是同义词研究的出发点和基础,我们必须在此基础上进一步研究在实际的语言交流和运用中如何得体而恰当地运用同义词。同义词的语用研究把同义词的研究范畴从传统的语义学研究范畴延伸到了语用学、修辞学、心理学等研究范畴,因为这些学科本身就是密切联系的。只有这样,同义词———这些看似“相似的词语”才能有用武之地,才能丰富和美化我们的表达,使我们的语言表达准确而得体。  相似文献   

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