全文获取类型
收费全文 | 139篇 |
免费 | 18篇 |
国内免费 | 12篇 |
专业分类
力学 | 63篇 |
综合类 | 3篇 |
数学 | 78篇 |
物理学 | 25篇 |
出版年
2024年 | 1篇 |
2023年 | 1篇 |
2021年 | 1篇 |
2020年 | 2篇 |
2019年 | 2篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2016年 | 5篇 |
2015年 | 2篇 |
2014年 | 4篇 |
2013年 | 7篇 |
2012年 | 5篇 |
2011年 | 6篇 |
2010年 | 5篇 |
2009年 | 5篇 |
2008年 | 4篇 |
2007年 | 7篇 |
2006年 | 5篇 |
2005年 | 12篇 |
2004年 | 9篇 |
2003年 | 12篇 |
2002年 | 10篇 |
2001年 | 9篇 |
2000年 | 10篇 |
1999年 | 3篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1993年 | 3篇 |
1992年 | 4篇 |
1991年 | 3篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1986年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1980年 | 2篇 |
1957年 | 1篇 |
排序方式: 共有169条查询结果,搜索用时 15 毫秒
161.
162.
唐驾时 《应用数学和力学(英文版)》2000,21(10):1153-1160
IntroductionThestudyoftheapproximatesolutionofstronglynonlinearsystemsisstillthemaintaskinthenonlineardynamicalregion .TherearematuremethodsincludingthedevelopedKBMmethod[1],themodifiedLPmethod[2 ]andthestroboscopicmethod[3]etal.However,whenthesemethodsarea… 相似文献
163.
W. M. Yang 《International Journal of Computational Fluid Dynamics》2013,27(9):643-648
This study investigates the instability analysis of modulated Taylor vortices flow by utilising a numerical method. Based on the consideration that the outer cylinder is fixed and the inner cylinder rotates at a non-zero averaged speed under varying modulated amplitudes and frequencies, the flow is converted from one-dimension Couette flow to Taylor vortices. When the modulated amplitude is greater than 1 and the rotation speed of the inner cylinder exceeds the threshold value for one-dimensional flow, the flow will be more stable at intermediate and high frequencies. When the modulated amplitude is sufficiently large and the inner cylinder rotates at medium frequency, subharmonic flow arises. 相似文献
164.
Raphaële Supper 《Positivity》2005,9(4):645-665
For functions u subharmonic in the unit ball BN of
, this paper compares the growth of the repartition function of their Riesz measure μ with the growth of u near the boundary
of BN. Cases under study are:
and
, with A, B, γ positive constants and
if N=2 or
if N≥ 3. This paper contains several integral results, as for instance: when ∫BN u+(x)[-ω′(|x|2)]dx < +∞ for some positive decreasing C1 function ω, it is proved that
. 相似文献
165.
强流射频电子直线加速器中的分频预聚束器的研制 总被引:1,自引:1,他引:0
本文介绍了中国原子能科学研究院FEL工程中的分频预聚束器的物理设计、加工、特性参数测量情况。研制结果表明,理论设计与参数测量的结果基本符合。 相似文献
166.
We obtain criteria for harmonicity and subharmonicity of a function in a domain in R
d
, d2, in terms of special Arens–Singer and Jensen measures. We also establish a criterion for (sub-)harmonicity of a -subharmonic function in terms of the associated Riesz charge and special Arens–Singer and Jensen functions. To this end, we use the theorem of this article on continuation of (sub-)harmonic functions to polar sets. 相似文献
167.
1.IntroductionABrusselatorisoneofthebestexaminedmodelchemicalreactionswhichconsistsoffourstepsItisshowninFig.1schematicallyandisrepreselltedbythefollowingsetofequationsffevedFebruary6,1995.*~workissupportedbytheNationalNaturalScienceFOundationmanYuan"TermsinChina.ThemodelweadoptistheoneduetoPrigogine,Lefever,andNicolis(Brusselator)t'.Fig.1.'TheschematicdiagramofBrusselmodel(AdditionalcirculararrowsrepreseDttheexistenceofautocatalysis.)Herexandystandfortheconcentrationsofreferencereacta… 相似文献
168.
本文证明了n-维(n≥2)Euclidean空间的上半空间中Poisson积分在无穷远点处的增长性质.同时将这个性质推广到次调和函数中去,其概括了解析函数和调和函数的增长性质. 相似文献
169.
Mohamed El Kadiri 《Journal of Mathematical Analysis and Applications》2011,381(2):706-723
A weak and a strong concept of plurifinely plurisubharmonic and plurifinely holomorphic functions are introduced. Strong will imply weak. The weak concept is studied further. A function f is weakly plurifinely plurisubharmonic if and only if it is locally bounded from above in the plurifine topology and f°h is finely subharmonic for all complex affine-linear maps h. As a consequence, the regularization in the plurifine topology of a pointwise supremum of such functions is weakly plurifinely plurisubharmonic, and it differs from the pointwise supremum at most on a pluripolar set. Weak plurifine plurisubharmonicity and weak plurifine holomorphy are preserved under composition with weakly plurifinely holomorphic maps. 相似文献