两矩阵乘积的{1，3M，4N}-逆的反序

利用广义Schur补的极大秩研究了两个矩阵乘积的{1,3M,4N}-逆的反序．给出了反序B{1,3N,4K}A{1,3M,4N}包含于（AB）{1,3M,4K）成立的充分必要条件．     

坡矩阵的广义逆(Ⅰ)

研究坡矩阵的广义逆,给出坡矩阵的{1,3}-广义逆、{1,4}-广义逆和Moore-Penrose广义逆存在的等价条件,并讨论坡矩阵的Moore-Penrose广义逆存在且等于其转置矩阵的充要条件.     

矩阵伪逆的一个等价定义及其应用

在Moore-Penrose逆的4个代数方程中两边取共轭转置,得到与之等价的定义.运用该等价定义,研究了矩阵A的自反广义逆、最小二乘广义逆、极小范数广义逆、Moore-Penrose逆,A{1,2,3}逆、A{1,2,4}逆及A{1,3,4}逆,得到了其间关系的若干充要条件.     

C(*)-代数上的广义逆序律

研究C*-代数上的{1,3}、{1,2,3}-逆和{1,4｝、{1,2,4｝-逆的逆序律成立的等价条件,进而也给出Moore-Penrose逆的逆序律成立的等价条件.     

关于环上矩阵乘积的{1,3}-逆、{1,4}-逆和Moore-Penrose逆的注记

2015年,N. Castro-Gonzalez等给出了环上矩阵P是可逆时矩阵乘积PA是{1,3}-可逆的,AQ是{1,4}-可逆的和PAQ是MP-逆的充要条件及表达式,本文给出了环上矩阵A满足P′PA=A=AQQ′时,矩阵乘积PA是{1,3}-可逆的,AQ是{1,4}-可逆的,PAQ是MP-逆的充要条件及一些注记。     

广义逆矩阵A{1},A{1,3}A{1,4}通式的分块表示

在很多情况下要求给出奇异矩阵或长方矩阵的某种类型的逆矩阵。在不同的目下,它们有不同的逆矩阵,即广义逆矩阵。为了方便以后的计算,主要研究了广义逆矩阵A{1},A{1,3},A{1,4}通式的分块表达形式并给予了证明,然后推出了广义逆矩阵A{1,2,3}的分块表达及特殊情况。     

矩阵的Γ-(i,…,j)逆

对于矩阵的Γ逆,国内外许多专家和学者进行了大量的的研究,特别是关于约束线性方程组,矩阵Γ逆的研究和应用有着非常重要的意义.主要利用的是文献[1]中矩阵的广义奇异值分解,给出了复数域上矩阵A的关于P,Q的一个Γ{1}逆,Γ{1,2}逆,Γ{1,3}逆,Γ{1,4}逆,Γ{1,2,3}逆,Γ{1,2,4}逆存在的充分必要条件和表达的显公式,并且给出了矩阵A的关于P,Q的Γ{2}逆,Γ{2,3}逆,Γ{2,4}逆,Γ{2,3,4}逆存在的显公式,推广了以往文献的结果.     

任意半环上正则元的广义逆

研究了任意半环上正则元的广义逆的存在性.给出了任意半环上正则元的{1,2}-逆存在的一些充分条件,同时给出了{1,2}-逆存在时的表达式.作为{1,2}-逆的特殊情形,刻画了任意半环上正则元的Moore-Penrose逆和群逆的存在性.     

两个矩阵和的｛1,3｝-逆与｛1,4｝-逆

利用矩阵的秩方法与广义Schur补的最大秩与最小秩,研究两个矩阵和的{1,3}-逆与{1,4}-逆分别与各个矩阵的{1,3}-逆与{1,4}-逆的和之间的关系.得到{A(1,3)+B(1,3)}={(A+B)(1,3)}以及{A(1,4)+B(1,4)}={(A+B)(1,4)}成立的充要条件.     

关于环上矩阵的加权Moore-Penrose逆

研究环上矩阵A=GDH(其中G为右高矩阵,H为左高矩阵)相对于M和N的加权Moore-Pen-rose逆,得到带有对合的有单位元的结合环R上的一类可分解矩阵的加权Moore-Penrose逆存在的充要条件及其表达式.     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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。     

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.     

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.