全文获取类型
收费全文 | 86篇 |
免费 | 0篇 |
国内免费 | 2篇 |
专业分类
化学工业 | 3篇 |
金属工艺 | 4篇 |
轻工业 | 2篇 |
石油天然气 | 3篇 |
无线电 | 4篇 |
一般工业技术 | 17篇 |
冶金工业 | 26篇 |
自动化技术 | 29篇 |
出版年
2014年 | 1篇 |
2012年 | 2篇 |
2010年 | 2篇 |
2009年 | 1篇 |
2008年 | 1篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2002年 | 1篇 |
2001年 | 2篇 |
1999年 | 1篇 |
1998年 | 9篇 |
1997年 | 5篇 |
1996年 | 5篇 |
1995年 | 4篇 |
1994年 | 5篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 3篇 |
1990年 | 6篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 2篇 |
1985年 | 3篇 |
1984年 | 4篇 |
1983年 | 1篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1969年 | 3篇 |
1968年 | 2篇 |
1966年 | 1篇 |
排序方式: 共有88条查询结果,搜索用时 0 毫秒
1.
We present a method for analyzing the convergence properties of nonlinear dynamical systems yielding second-order bounds on the domain of attraction of an asymptotically stable equilibrium point and on the time of convergence in the estimated domain. We show that under certain conditions on the system, there exists an analytic solution to the corresponding optimization problem. The method is applied in analyzing the dynamics of a neural network model. 相似文献
2.
M Baram 《Canadian Metallurgical Quarterly》1996,104(7):704-707
3.
The existence of nanometer-thick amorphous equilibrium films at metal-ceramic interfaces has been experimentally verified for the Au–Al2O3 system. The films were formed using a novel experimental approach, in which thin sputtered films of Au were dewetted on a sapphire substrate which was previously partially wetted with drops of anorthite glass (CaO–2SiO2–Al2O3). High-resolution transmission electron microscopy and qualitative analytical transmission electron microscopy were used to confirm the existence of the amorphous films. In addition, positive and relatively large Hamaker constants were calculated for the Au-film-Al2O3 interface, which indicates the existence of an attractive van der Waals force which stabilizes the film, similar to equilibrium films at grain boundaries in ceramics. A ∼ 1 nm thick surface film was also detected on the (0001) surface of sapphire substrates partially wetted by anorthite glass. The refractive index required to stabilize the surface films, via a positive Hamaker constant, is explored. 相似文献
4.
5.
The consistency of maximum likelihood and related Bayesian estimates for a general class of observation sequences is treated, following a result by P. E. Caines. The condition for consistency is then interpreted in terms of the statistics associated with linear systems driven by white Gaussian inputs, to establish a verifiable condition for the identifiability of such systems on finite sets of mathematical representations. 相似文献
6.
Centrifuge melt spinning (CMS) is a technique used for the production of rapidly solidified metallic ribbons, in which the
liquid metal is ejected centrifugally from a rotating crucible onto a quenching copper rim which rotates in the direction
opposite the crucible. A numerical model has been developed to describe the hydraulic features of the alloy melt stream, together
with the heat flow in the solidifying melt. The model takes into account, among other things, the dragging mechanism caused
by the counter-rotation of the casting crucible and the quenching rim, the additional spreading velocity imparted to the melt
by centrifugal forces developing on the rotating rim, the increase of heat transfer in the melt due to convection, and the
changes of the viscosity of the melt with temperature. Comparison of the mathematical model with experimental results obtained
for an Al-12 at. pct Ge alloy indicates that CMS is characterized by heat-transfer coefficients ranging from 3 to 11 * 106 W m−2 K−1 depending mainly on the velocities of the casting crucible and the rim. The effect of various process parameters, such as
crucible and rim velocities, on the dimensions of the obtained ribbons and the effect of the enhanced heat flow in the melt
on the reduction of thermal gradients in the ribbon are presented. 相似文献
7.
8.
The least-squares transformation of a discrete-time multivariable linear system into a desired system by convolving the first with a polynomial system yields optimal polynomial solutions to the problems of system compensation, inversion, and approximation. The polynomial coefficients are obtained from the solution of a normal linear matrix equation whose coefficients are shown to be the weighting patterns of certain linear systems. These can then be used in the recursive solution of the normal equation 相似文献
9.
The reduced-order representation of possibly nonstationary observations of Markovian processes with additive measurement noise is considered. A canonical variable model reduction scheme is derived in a geometric setting. 相似文献
10.