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Search Results: 1 - 10 of 285625 matches for " 李永 "
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PA误差下的半参数回归模型小波估计的强相合性
Strong Consistency of Wavelet Estimation in a Semiparametric Regression Model under PA Sequence Errors
 [PDF]

李佳,
Pure Mathematics (PM) , 2012, DOI: 10.12677/PM.2012.24027
Abstract: 本文讨论了误差为正相协(PA)序列的半参数回归模型,在适当的条件下,利用小波估计方法研究了参数分量和非参数分量的小波估计量的强相合性。
Consider a semiparametric regression model with PA sequence errors. In this paper, we study the strong consistency of the wavelet estimators for parameter component  and non-parameter component  under suitable conditions.
电冲击下功能梯度压电带中裂纹尖端热效应
Thermal Effect of Functionally Graded Piezoelectric Materials with Crack by Electric Shock
 [PDF]

,
International Journal of Mechanics Research (IJM) , 2012, DOI: 10.12677/ijm.2012.11001
Abstract:

摘 要:本文探讨在高电冲击载荷作用下,压电介质中裂纹尖端的热效应问题的奇异积分方程方法,通过引入热源功率,利用绝热近似,由简化的热传导方程得到了裂纹尖端在电冲击作用下短时间范围的温度场。通过构造位错密度函数,并利用Laplace变换和Fourier变换将原方程转化为Cauchy核的奇异积分方程,进而利用Chebyshev多项式展开以及Gauss-Chebyshev积分公式对该奇异积分方程进行数值求解,同时讨论了裂纹尺寸对温度升高值和升高区域大小的影响。

Abstract: With the global implementation of the “Framework Convention on Tobacco Control”, tobacco industry in different countries would meet more pressure in future development to a certain extent. This essay is based on Kunming flue-cured acquisition data 2006-2010 combined with quality control theory, non- constant process of quality control and logistic non-linear regression analysis to examine annual acquisition trend in history multi-levelly and multi-dimensionally and to excavate current situation deeply so as to discover natural discipline in flue-cured production, then establish an effective quality control index system of tobacco acquisition course assisted by current demands, which could lay the foundation for ensuring the acquisition process being accomplished efficiently and enhancing the ability of supplying high grade tobacco leaves, as well as strengthen the core competencies of Yunnan tobacco industry.

CVaR度量在极值理论中的应用
Application of CVaR Metric in Extreme Value Theory
 [PDF]

姚竟,
Pure Mathematics (PM) , 2016, DOI: 10.12677/PM.2016.62014
Abstract:
近半个世纪以来,随着经济的全球化和多元化,金融风险的度量逐渐受到金融界以及经济学者的关注。90年代后,新型风险管理工具VaR(在险价值)测量方法逐步发展起来,以它能够科学、准确、综合的度量风险值而倍受国际金融界的青睐。但在极端事件发生期,VaR的度量准确性不如CVaR(条件在险价值)。本文意在研究CVaR度量在极值理论上的应用。
Since the last half a century, with the globalization and diversification of economy, the financial risk measurement has gradually been concerned by the financial and economic scholars. After the 1990s, the new risk management tool, VaR (value at risk) measurement method has been devel-oped gradually, which can measure risk value scientifically, accurately and comprehensively, and it is welcomed in the international financial community, but in extreme event, the accuracy of VaR is less than that of CVaR (conditional value at risk). This paper is intended to study the application of CVaR measure in extreme value theory.
高水位软土地区地下室抗浮设计的探讨
Discussion on Anti-Floating Design of Basement in the Area with High Water Level and Soft Soil
 [PDF]

, 兴甲
Hans Journal of Civil Engineering (HJCE) , 2016, DOI: 10.12677/HJCE.2016.55026
Abstract:
根据沿海高水位软土地区特点,提出了合理确定抗浮设防水位的原则。对各种抗浮措施进行归纳,并提出其适用条件。给出了抗拔桩数量的计算公式,并针对钻孔灌注桩抗拔桩的配筋计算和裂缝控制提出了自己的观点。本文还对抗浮区桩基础包络设计提出具体设计建议。
According to characteristics of the coastal area with high water level and soft soil, the principle of reasonable determining anti-floating fortification ground water level was put forward. A variety of anti-floating measures were summarized, and its applicable conditions were advanced. The formula that is used for calculating quantity of tension pile was given, and some personal views about reinforcement calculation and crack control were presented. In this paper, some detailed design suggestions on pile foundation enveloping design in the area of anti-floating were raised as well.
无粘结预应力现浇空心板楼盖在高层建筑中的应用

工业建筑 , 2003, DOI: 10.13204/j.gyjz200308028
Abstract: 着重介绍无粘结预应力现浇空心板在高层建筑中的应用。对现浇空心板的截面选择、内力计算、预应力钢筋和非预应力钢筋的确定进行了详细分析。对于解决高层建筑中的大跨度结构和降低层高等问题进行了有益的探索
大底盘多塔结构的方案设计

工业建筑 , 2002, DOI: 10.13204/j.gyjz200207009
Abstract: 着重介绍星城广厦结构方案的设计思路和设计方法。对大底盘多塔结构中设沉降缝、后浇带和不设沉降缝、后浇带的做法进行了分析。对采用不同的基础形式来控制基础的差异沉降进行了计算比较。确定合理的地基处理方案和基础形式。根据上部建筑不同的使用要求采用了特殊的结构形式,如密肋板、扁梁、桁架增柱、箱型转换层等
探究南通民间蓝印花布

东南文化 , 2005,
Abstract: ????探究南通民间蓝印花布的历史渊源、工艺流程和美学价值,探究南通对民间蓝印花布的保护做法和引发的思考,旨在提高我们对保护民间蓝印花布重要性的认识,使民间蓝印花布得到更有力的保护和健康的发展。
从朝集使到进奏官——兼谈中国古代的“驻京办事处”

天府新论 , 2011,
Abstract: 朝集使和进奏官分别在唐前、后期中央与地方信息交流过程中发挥过重要作用。从朝集使到进奏官的变化,不仅是唐代中央与地方信息交流方式的变化,更是唐代社会政治秩序与权力格局演变的缩影。若将时段拉长,把朝集使、进奏官同战国秦汉以来即存在的上计吏加以对比考察,还可从中窥探中国古代地方政府"驻京办事处"的历史演进。
磁性纳米材料在肿瘤靶向治疗中的应用
Application of Magnetic Nano-Materials in Tumor Targeted Therapy
 [PDF]

, 姜炜, 凤生
Journal of Advances in Physical Chemistry (JAPC) , 2012, DOI: 10.12677/JAPC.2012.13005
Abstract:
纳米磁靶向给药系统是将纳米技术、生物技术及磁靶向技术有机结合,借助纳米磁性材料良好的磁靶向性,通过外加磁场定位,将药物选择性地聚集于病灶部位,在细胞或亚细胞水平上发挥药效作用。本文详细介绍了纳米磁性材料应用于肿瘤磁靶向治疗中的研究进展,并对其发展前景进行了展望。
The targeted drug delivery system is the combination of nanotechnology, biotechnology and magnetic targeting technology. Combined with excellent magnetic targeted property, the drug is gathered selectively at the lesion site by an external magnetic field and shows effect at the cellular or subcellular level. The application of nano-magnetic materials to tumor magnetic targeted therapy is generalized in detail and the future prospect of them is also presented in this paper.
胺的合成反应综述
The Summary of the Synthesis of Amines
 [PDF]

, 荣疆
Studies in Synthetic Chemistry (SSC) , 2016, DOI: 10.12677/SSC.2016.42002
Abstract:
胺作为一类非常有效的药物官能团,存在于大多数药物结构之上。本文总结现有胺的合成的主要方法,以及探索寻找新的胺的合成方法。
Amines, as a class of very effective drug functional groups, exist on most pharmaceutical struc-tures. In this paper, we summarize the main methods for the synthesis of existing amines, and explore the methods for the synthesis of novel amines.
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