全文获取类型
收费全文 | 8760篇 |
免费 | 168篇 |
国内免费 | 26篇 |
专业分类
化学 | 5409篇 |
晶体学 | 71篇 |
力学 | 145篇 |
数学 | 1355篇 |
物理学 | 1974篇 |
出版年
2020年 | 79篇 |
2019年 | 69篇 |
2017年 | 64篇 |
2016年 | 141篇 |
2015年 | 108篇 |
2014年 | 145篇 |
2013年 | 280篇 |
2012年 | 279篇 |
2011年 | 325篇 |
2010年 | 187篇 |
2009年 | 186篇 |
2008年 | 271篇 |
2007年 | 284篇 |
2006年 | 272篇 |
2005年 | 267篇 |
2004年 | 259篇 |
2003年 | 227篇 |
2002年 | 218篇 |
2001年 | 151篇 |
2000年 | 188篇 |
1999年 | 147篇 |
1998年 | 121篇 |
1997年 | 106篇 |
1996年 | 143篇 |
1995年 | 177篇 |
1994年 | 164篇 |
1993年 | 141篇 |
1992年 | 163篇 |
1991年 | 144篇 |
1990年 | 124篇 |
1989年 | 134篇 |
1988年 | 130篇 |
1987年 | 121篇 |
1986年 | 116篇 |
1985年 | 171篇 |
1984年 | 133篇 |
1983年 | 156篇 |
1982年 | 166篇 |
1981年 | 145篇 |
1980年 | 139篇 |
1979年 | 152篇 |
1978年 | 120篇 |
1977年 | 125篇 |
1976年 | 107篇 |
1975年 | 93篇 |
1974年 | 120篇 |
1973年 | 123篇 |
1972年 | 66篇 |
1971年 | 78篇 |
1966年 | 64篇 |
排序方式: 共有8954条查询结果,搜索用时 15 毫秒
1.
2.
Michel Weber 《Transactions of the American Mathematical Society》2006,358(2):911-936
We apply a majorizing measure theorem of Talagrand to obtain uniform bounds for sums of random variables satisfying increment conditions of the type considered in Gál-Koksma Theorems. We give some applications.
3.
Werner Leißner 《Results in Mathematics》1991,20(1-2):530-537
4.
We relate the Schramm–Loewner Evolution processes (SLE) to highest-weight representations of the Virasoro Algebra. The restriction properties of SLE that have been recently derived in [19] play a crucial role. In this setup, various considerations from conformal field theory can be interpreted and reformulated via SLE. This enables one to make a concrete link between the two-dimensional discrete critical systems from statistical physics and conformal field theory. To cite this article: R. Friedrich, W. Werner, C. R. Acad. Sci. Paris, Ser. I 335 (2002) 947–952. 相似文献
5.
6.
O. Kortner M.P. Locher V.E. Markushin P. Weber O. Wigger 《The European Physical Journal C - Particles and Fields》2002,25(3):353-360
We study correlations in the exclusive reaction at rest with complete reconstruction of the kinematics for each event. The inclusive distribution is fairly flat at small
invariant mass of the pion pair while a small enhancement in the double differential distribution is observed for small invariant
masses of both pion pairs. Dynamical models with resonances in the final state are shown to be consistent with the data while
the stochastic HBT mechanism is not supported by the present findings.
Received: 26 February 2002 / Revised version: 22 July 2002 / Published online: 30 August 2002 相似文献
7.
Michel Weber 《Results in Mathematics》2005,47(3-4):340-354
Under a very moderate assumption on the Fourier coefficients of a periodic function, we show the convergence almost everywhere of the sequence of averages of its associated Riemann sums. The structure of the set of averages is analyzed by proving a spectral regularization type inequality, which allows to control the corresponding Littlewood-Paley square function. 相似文献
8.
9.
Viviane Van Hoof Hugo Cluckers Vera Verhaeghe An Hennebel Marleen Truyens Edith Van Loock Pierre Rombouts Dirk Maes Jan Van Elven Katrien Lesage Mark Flothmann Lieve Nijs Filip Colpaert Werner Vercammen Dominique Bolain 《Accreditation and quality assurance》2004,10(1-2):55-59
In response to a change of the Belgian National Directives whereby hospital laboratories became responsible for all point-of-care testing (POCT) performed within hospital walls a standardized and automated POC glucose-testing system was implemented in our hospital. The system consists of 50 AccuCheck Inform instruments (Roche Diagnostics, Vilvoorde, Belgium), 50 docking stations, a DataCare Server, and connections to the medical laboratory information system (MOLIS, Sysmex, Barchon, Belgium) and to the hospital information system. Implementation involved many parties and extensive preparation and communication. Key issues were bar-coded patient and user identification, training, and responsibilities. One year after the hospital wide implementation of this system the quality of POC glucose testing has significantly increased, thereby improving patient safety. This study describes a stepwise change over involving the medical laboratory and with a focus on hands-on quality.Presented at the ninth conference on Quality in the Spotlight, 18–19 March 2004, Antwerp, Belgium. 相似文献
10.
Kenneth Weber Vilmar Trevisan Luiz Felipe Martins 《Journal of Algorithms in Cognition, Informatics and Logic》2005,54(2):152-167
This paper describes the first algorithm to compute the greatest common divisor (GCD) of two n-bit integers using a modular representation for intermediate values U, V and also for the result. It is based on a reduction step, similar to one used in the accelerated algorithm [T. Jebelean, A generalization of the binary GCD algorithm, in: ISSAC '93: International Symposium on Symbolic and Algebraic Computation, Kiev, Ukraine, 1993, pp. 111–116; K. Weber, The accelerated integer GCD algorithm, ACM Trans. Math. Softw. 21 (1995) 111–122] when U and V are close to the same size, that replaces U by (U−bV)/p, where p is one of the prime moduli and b is the unique integer in the interval (−p/2,p/2) such that . When the algorithm is executed on a bit common CRCW PRAM with O(nlognlogloglogn) processors, it takes O(n) time in the worst case. A heuristic model of the average case yields O(n/logn) time on the same number of processors. 相似文献