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1.
实值函数的McShane积分是一种Riemann型绝对积分,它等价于Lebesque积分,向量值函数的McShane积分是实值函数McShane积分在Banach空间中的推广,它与实函数McShane积分有较大的差别,讨论了向量值函数McShane积分的收敛性问题,证明了一致收敛定理,平均收敛定理,特别地,当X^*的单位球*弱列紧时,控制收敛定理也成立。  相似文献   

2.
将文献中在有限维Banach空间给出的集值上鞅存在Ries‘z分解的充要条件推广到无限维Banach空间,同时在条件相当弱的情形下,得到了一个近似于Ries’z分解形式的结论。  相似文献   

3.
三种小鼠血液生理生化正常值的测定   总被引:18,自引:4,他引:14  
本文通过对三种小鼠-BALB/c、C57BL/6J近交系小鼠和昆明远交群小鼠的血液学和血液生化指标进行测定。其结果:⑴血液学指标:BALB/c近交系小鼠的嗜中性白细胞、淋巴细胞雌雄间差异显著;C57BL/6J近交系小鼠、昆明小鼠雌雄间差异不显著;昆明小鼠的白细胞比BALB/c、C57BL/6J近交系小鼠的低;BALB/c近交系小鼠的单核细胞、嗜酸性白细胞、嗜碱性白细胞记数比C57BL/6J近交系小  相似文献   

4.
将文献中在有限维Banach空间给出的集值上鞅存在Ries'z分解的充要条件推广到无限维Banach空间,同时在条件相当弱的情形下,得到了一个近似于Ries'z分解形式的结论.  相似文献   

5.
应用连续函数的性质和闭区间套定理证明cauchy中值定理。  相似文献   

6.
文章对Banach空间中的独立随机无序列给出了一个有用的不等式,由此得到了B值随机向量的Marcinkiewicz强大数定律成立的充分必要条件。  相似文献   

7.
本文提出一种新的计算复矩阵奇异值的Jacobi型方法-对角元实数化方法,新方法可以避免施工繁杂的运算;减少了计算量,克服了循环Jacobi法的某些困难;而且保存了Jacobi型方法固有的高度并行性,数值例子表明对角元实数化方法是有效的。  相似文献   

8.
证明了与Marcinkiewicz-Zygmund不等式类似的B值随机变元不等式,应用这一结果,我们获得一些关于B值随机变元序列几乎必然收敛及完全收敛的结果  相似文献   

9.
引入“双向SC性质”的概念;对于具有双向SC性质的矩阵A,论证了以下事实:若A的奇异值σ位于Gerschgorin型包含区间的边界上,则σ必位于每一个Gerschgorin型区间的端点上.  相似文献   

10.
讨论了取值于Banach空间的有界集值测度,获得了集值测定的选择定理,并讨论了具有RN性质的Banach上有界集值工的紧性及弱紧性。  相似文献   

11.
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.  相似文献   

12.
The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.  相似文献   

13.
大肠杆菌pheA与tyrB基因的克隆与串联表达   总被引:3,自引:0,他引:3  
为探讨用基因工程的手段改良苯丙氨酸的发酵菌株,采用聚合酶链反应(PCR)的方法,从大肠杆菌总DNA中克隆得到了编码苯丙氨酸合成途中的两个关键酶基因-即分枝酸变位酶(CM)/预苯酸脱水酶(PD)基因pheA与苯丙氨酸转氨酶(PAT)基因tyrB,在大肠杆菌中进行了这两个基因的单个和串联表达。pheA和tyrB基因分别都能在λ噬菌体的PR启动子之后得到较大量的表达,在SDS-PAGE上出现清晰的条带,  相似文献   

14.
介绍了四川溲疏属植物20种,5变种及1栽培变型,每种均有文献考证、学名订正、特征集要及产地和生境,新分类群D.leiboeneie P.He et L.C.Hu, D.piloea var.longiloba P.He et L.C.Hu,D.jinyangensis P.He eL L.C.Hu及D.longifolia var.deneitomentosa P.He et L.C.Hu均有详细拉丁文描述并附模式标本照片,还记录了两个四川省新分布种:D.bodiaieri Rehd.,D.rehderiana C.K.Schn.,对伞花亚组Subsect Cymosae Rehd.中建立的新系(Ser.Multiradiatae P.He,Ser.Pauciradiatae P.He)作了拉丁文补充描述。  相似文献   

15.
Java这门编程语言以及相关技术的使用得到快速的增长;现在大约有700多万台计算机正在运行Java应用程序,有近100万的Java开发人员,世界上所有的企业中,几乎有一半正在开发 Java应用程序。Java成功的理由是很自然的,Java是真正与平台无关的,它是适合于任何操作系统的一种通用的编程语言;Java是完全面向对象的,这在软件工程和组件技术方面有了很大的进步;Java的安全模型是成熟的,这与其他容易感染病毒的模型系统形成了鲜明的对比。  相似文献   

16.
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.  相似文献   

17.
阳蝇属是蝇科最大的属之一,迄今全世界已知阳蝇属约666种,分布于世界各大地理区。近年来对阳蝇属种团和类群的研究,发现在我国阳蝇属中存在一些异名问题。在我国阳蝇属已知226种中,发现小兴安阳蝇(Helina xiaoxinganna Xue,2001)、茂县阳蝇(Helina maoxianica Feng,2008)、后曲阳蝇(Helina postiflexa Xue,Feng& Tong,2008)、团宝山阳蝇(Helina tuanbaoshanica Feng,2007)、兴凯阳蝇(Helina xingkaihuica Feng& Ye,2007)和错那阳蝇(Helinacuonaica Feng&Xu,2008)等6个种存在同物异名问题,并根据模式标本及原始文献,指出了同物异名的理由,明确给予了订正。  相似文献   

18.
为了采用全有限差分方法进行涡轮气热弹耦合计算,研究了固体弹性应力场计算的物理模型,给出了任意曲线坐标系下的控制方程.同时研究了定常问题的有限差分求解方法和边界条件的给定,编制了定常问题的应力场求解程序;并通过对具有解析解的受集中载荷的悬臂梁和一端受径向集中力的曲梁进行数值计算来验证该固体弹性应力场的求解方法.结果表明,边界条件的二阶精度处理的格式所得结果与解析解数据吻合得较好,而一阶精度格式结果与解析解有较大的误差.  相似文献   

19.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

20.
记述我国蜈蚣目Scolopendromorph耳孔蜈蚣亚科Otosigminae耳孔蜈蚣属Otostigmus(耳孔蜈蚣亚属Otostigmus)6种.其中对平耳孔蜈蚣Otostigmus(Otostigmuts)politus Karsch、糙耳孔蜈蚣O.(O.)scaber Porat和多刺耳孔蜈蚣O.(O.)aculeatus Hasse进行了重新描述;马氏耳孔蜈蚣O.(O.)martensi Lewis和贝氏耳孔蜈蚣O.(O.)beroni Lewis为2个我国新记录;刘易斯耳孔蜈蚣O.(O.)lewisi sp.nov.为1新种.附有各种特征图,并编制了种检索表.  相似文献   

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