全文获取类型
收费全文 | 174篇 |
免费 | 5篇 |
国内免费 | 12篇 |
专业分类
化学 | 1篇 |
综合类 | 3篇 |
数学 | 158篇 |
物理学 | 29篇 |
出版年
2022年 | 1篇 |
2021年 | 3篇 |
2020年 | 7篇 |
2019年 | 2篇 |
2018年 | 2篇 |
2017年 | 2篇 |
2014年 | 5篇 |
2013年 | 47篇 |
2012年 | 12篇 |
2011年 | 8篇 |
2010年 | 1篇 |
2009年 | 13篇 |
2008年 | 11篇 |
2007年 | 10篇 |
2006年 | 6篇 |
2005年 | 3篇 |
2004年 | 3篇 |
2003年 | 6篇 |
2002年 | 5篇 |
2001年 | 7篇 |
2000年 | 6篇 |
1999年 | 7篇 |
1998年 | 7篇 |
1997年 | 4篇 |
1996年 | 6篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1976年 | 1篇 |
排序方式: 共有191条查询结果,搜索用时 15 毫秒
31.
We derive an equation for the acceleration of a fluid element in the spherical gravitational collapse of a bounded compact object made up of an imperfect fluid. We show that non-singular as well as singular solutions arise in the collapse of a fluid initially at rest and having only a tangential pressure. We obtain an exact solution of the Einstein equations, in the form of an infinite series, for collapse under tangential pressure with a linear equation of state. We show that if a singularity forms in the tangential pressure model, the conditions for the singularity to be naked are exactly the same as in the model of dust collapse. 相似文献
32.
Yanhua Wang Shuyuan He Lixing Zhu Kam C. Yuen 《Probability Theory and Related Fields》2007,138(1-2):235-267
For censored response variable against projected co-variable, a generalized linear model with an unknown link function can
cover almost all existing models under censorship. Its special cases include the accelerated failure time model with censored
data. Such a model in the uncensored case is called the single-index model in econometrics. In this paper, we systematically
study the asymptotic properties. We derive the central limit theorem and the law of the iterated logarithm for an estimator
of the direction parameter. We also obtain the optimal convergence rate of an estimator of the unknown link function in the
model.
相似文献
33.
R. Meinel 《Annalen der Physik》2004,13(10):600-603
It is shown that the extreme Kerr black hole, i.e. the one with the maximal angular momentum for a given mass, is the only candidate for a black hole limit of rotating fluid bodies in equilibrium. 相似文献
34.
35.
REMARKS ON h-TRANSFORM AND DRIFT 总被引:1,自引:1,他引:0
Ying Jiangang 《数学年刊B辑(英文版)》1998,19(4):473-478
51.h-TransformsInthispaperwearegoingtogiveaformulacharacterizingRevuzmeasuresunderhtrallsform.AssumethatXisarightMarkovprocesswithstatespace(E,B)whichismel,rizable,constructedonthecanonicalspacefiofrightcontinuouspaths,and(Pt)and(Ua)arethesemigroupandresolventofXrespectively.LethbeanexcessivefunctionandletEh:={0相似文献
36.
本文给出随机删失场合下非参数回归函数的一类核估计,得到核估计的强相合性,并证得对数律。 相似文献
37.
Lennart Bondesson 《Linear and Multilinear Algebra》2013,61(3):239-247
A nonsymmetric N?×?N matrix with elements as certain simple functions of N distinct real or complex numbers r 1, r 2, …, rN is presented. The matrix is special due to its eigenvalues???the consecutive integers 0,1,2, …, N?1. Theorems are given establishing explicit expressions of the right and left eigenvectors and formulas for recursive calculation of the right eigenvectors. A special case of the matrix has appeared in sampling theory where its right eigenvectors, if properly normalized, give the inclusion probabilities of the conditional Poisson sampling design. 相似文献
38.
39.
通过用方差定义左右修正量,将点值不确定推理真值传播计算方法推广到区间值情形,提出了一种区间值不确定推理真值传播计算方法.本文所提出的方法表达式简单,易于理解与计算. 相似文献
40.
A basis for the right quantum algebra and the “1=q” principle 总被引:1,自引:0,他引:1
We construct a basis for the right quantum algebra introduced by Garoufalidis, Lê and Zeilberger and give a method making
it possible to go from an algebra subject to commutation relations (without the variable q) to the right quantum algebra by means of an appropriate weight-function. As a consequence, a strong quantum MacMahon Master
Theorem is derived. Besides, the algebra of biwords is systematically in use.
相似文献