一类半参数回归模型二阶段估计的渐近理论

考虑回归模型yi＝xiβ＋g（ti）＋ei，1≤i≤n，g为R1上未知函数，β为p×1维待估参数向量．基于近邻权函数利用文献[1]中给出的方法建立了β和g的估计量βn，gn，并且证明了它们具有很好的大样本性质     

扩张映射的带有收敛速度的高维中心极限定理

摘要：设M是紧致连通的光滑的黎曼流形，X∪→U∪→M，T：X→X上的扩张映射，g是X上的Holder连续函数，m是g的平衡态，假设f：X→R^d，其每个分量fi是Holder连续函数，且∫Xfidm=0。如果f是每个分量fi是上同调不相关的，那么存在一个正定对称矩阵σ^2，使得f^n/√n=f＋f。T＋…＋f。T^n-1/√n关于m依分布收敛于期望向量为0、协方差矩阵为σ^2的n维Gauss随机变量，进一步，存在一个实数A〉0使得，对任意整数n≥1，有不等式 П（m＊（f^n/√n）,N（0,σ^2）≤A/√n，其中，m＊（f^n/√n）表示f^n/√n关于m的分布，П（＊，＊）是Prokhorov度量。     

乘积矩阵的奇异值估计

本文给ｍ个矩阵乘积的奇异值估计：ｍ∑ｊ＝１ｉ（ｊ）＝（ｍ－１）ｎ＋ｉ＾ｍａｘ（ｍ）Ⅱ（ｊ＝１）σ＾（ｊ）ｉ（ｊ）≤σｉ≤（ｍ）∑（ｊ＝１）＝ｉ＋ｍ－１ｍｉｎ＾（ｍ）Ⅱ（ｊ＝１）σ＾（ｊ）,ｉ（ｊ）,１≤ｉ≤ｎ同时给出了（ｋ）∑（ｉ＝１）σｉ,＾（ｋ）Ⅱ（ｉ＝１）σｉ的一个下界。     

一类非线性对称方程组解集的结构

主要讨论了非线性对称方程组S1＝S2＝…＝Sλ－1＝Sλ＋2…＝Sn＝Sn 1(1≤λ≤n），(Sk=x1^k x2^k … xm^k,k＝0，1，2…）的非零解，并指出其解集的结构。     

线图泛圈性的一个充分条件

本文的主要结果是：设G是n≥60阶连通图，且G是Hamilton图．若G满足下列条件之一（1）若g＝3且■e∈E（G），有d（e）≥（2n-9）／5，（2）若g≥4且■e1，e2∈E（G），e1与e2不相交，有d（e1）＋d（e2）≥2（2n-9）／5，则L（G）是泛图的。     

一类二阶中立型时滞微分方程的振动准则

本文主要利用H（ t,s）型函数和广义Riccati变换技巧,建立二阶中立型时滞拟线性微分方程[r（t）｜x′（t）｜γ－1x′（t）]′＋q0（t）｜y（t －σ）｜γ－1y（t －σ）＋q1（t）｜y（t －σ1）｜α－1y（t －σ1）＋q2（t）｜y（t －σ2）｜β－1y（t －σ2）＝0．其中x（t）＝y（t）＋p（t）y（t－τ）,在0≤p（t）≤1的新的振动准则．     

Kn—e图中的路因子

G是一个Kn-e图,e∈E（Ka）。设σ2（G）表示不相邻顶点度和的最小值．令｜V（G）｜=n=∑^ki=1 a,并且σ2（G）≥,n＋k-1．证明对于图G中任意的k个顶点v1,v2,…vk。存在点不相交的路P1,P2,…Pk,使得对于1≤i≤k,都有｜V（Pi）｜=ai．并且vi是Pi的一个端点．     

在矩控制下 B-值随机Dirichlet级数的(P,q)(R)级和(P,q)(R)型

该文研究了在条件：0≤（d^2）（σ^2）n=d^2 E｜｜Zn｜｜^2≤E^2｜｜Zn｜｜〈＋∞下,在全平面上收敛的B-值随机Dirichlet级数的（p,g）（R）级和（p,q）（R）型,证明了B-值随机Dirichlet级数{^∞∑（n=0）}Zn（ω）（e^-λ）（n^s）a.s．与级数{^∞∑（n=0）}^～σn（e^-λ）（n^s）具有相同的（p,g）（R）级和（p,q）（R）型.     

六角系统的点强全色数

对图G及正整数k,映射σ：VUE→{1,2,…,k}满足：（1）任意e1,e2∈VUE,如果e1,e2是相邻或相关联的,则有σ（e1）≠σ（e2）;（2）对u,v,w∈V（G）,uw,vw∈E（G）,uv￠E（G）有σ（u）≠σ（v）,则称σ为G的一个k-点强全染色,并且xτ^vs（G）={k｜存在G的k点强全染色},称为G的点强全色数．研究了六色系统图G的点强全色数,得到△（G）＋l≤xτ^vs;（G）≤△（G）＋2,其中△（G）,xτ^vs（G）分别表示G的最大度和点强全色数．     

关于广义位数码和的一个注记

给定非负实数b1〈b2〈b3〈…〈bk,称它们是B-数码．设n=bi1bi2…bij,1≤ij≤k,j=1,2,3,…,称s（n）=bi1＋bi2＋…＋bij是n的B-数码和．对于给定的x=bi1bi2…bij,b1≤bij≤bk,j=0,1,2,…,n,给出了∑n≤x s（n）和∑n≤x s^2（n）的一个估计．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

The Analects and the Moment in Peking——The influence of a Confucian education system on the personality formation,the way of thinking and the fate of the main characters

0.Preface China has long been boasting of its colorful and immense culture which comprises of Taoism,Confucianism and Buddhism.The interwoven influence among the religions on Chinese way of thinking,on the nation＇s behavior in their social life throughout the long history is beyond list.