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71.
72.
具有两次透射的无光焦度校正透镜组的准施密特系统 总被引:2,自引:1,他引:1
介绍了一种具有两次透射的无光焦度校正透镜组的准施密特系统及其设计思想和方法,并给出了一个设计结果。焦距2.7m,相对孔径F/5.5,视场角3.42°。在全视场范围内成像质量达到了衍射极限。 相似文献
73.
74.
LUK Hing-Sun 《中国科学A辑(英文版)》2006,(11)
This paper gives an explicit formula for calculating the Webster pseudo torsion for a strictly pseudoconvex pseudo-hermitian hypersurface. As applications, we are able to classify some pseudo torsion-free hypersurfaces, which include real ellipsoids. 相似文献
75.
Gutti Jogesh Babu Yogendra P. Chaubey 《Annals of the Institute of Statistical Mathematics》1996,48(1):75-88
This paper studies regression, where the reciprocal of the mean of a dependent variable is considered to be a linear function of the regressor variables, and the observations on the dependent variable are assumed to have an inverse Gaussian distribution. The large sample theory for the pseudo maximum likelihood estimators is available in the literature, only when the number of replications increase at a fixed rate. This is inadequate for many practical applications. This paper establishes consistency and derives the asymptotic distribution for the pseudo maximum likelihood estimators under very general conditions on the design points. This includes the case where the number of replications do not grow large, as well as the one where there are no replications. The bootstrap procedure for inference on the regression parameters is also investigated.Research supported in part by NSF Grant DMS-9208066.Research supported in part by NSERC of Canada. 相似文献
76.
Chuanyi Zhang 《Czechoslovak Mathematical Journal》1997,47(3):385-394
Vector-valued pseudo almost periodic functions are defined and their properties are investigated. The vector-valued functions contain many known functions as special cases. A unique decomposition theorem is given to show that a vector-valued pseudo almost periodic function is a sum of an almost periodic function and an ergodic perturbation. 相似文献
77.
V K B Kota 《Pramana》1977,9(2):129-140
The single particle SU(3) parentage coefficients are calculated for the case of leading SU(3) representation in the highest
orbital symmetry partition, using the method suggested by Hecht. Tabulations are given for all possible cases of identical
nucleons in η=3 and η=4 shells. 相似文献
78.
79.
Blocking is often used to reduce known variability in designed experiments by collecting together homogeneous experimental units. A common modeling assumption for such experiments is that responses from units within a block are dependent. Accounting for such dependencies in both the design of the experiment and the modeling of the resulting data when the response is not normally distributed can be challenging, particularly in terms of the computation required to find an optimal design. The application of copulas and marginal modeling provides a computationally efficient approach for estimating population‐average treatment effects. Motivated by an experiment from materials testing, we develop and demonstrate designs with blocks of size two using copula models. Such designs are also important in applications ranging from microarray experiments to experiments on human eyes or limbs with naturally occurring blocks of size two. We present a methodology for design selection, make comparisons to existing approaches in the literature, and assess the robustness of the designs to modeling assumptions. 相似文献
80.
In this study, we focus on the solutions of the Li\''enard equation being bounded in the future and characterize the almost automorphic, asymptotically almost automorphic, and weighted pseudo almost automorphic dynamics. An example is presented to illustrate the main findings. 相似文献