In 50 minutes,the angle excursion of emergent beam in x direction (horizon direction) is 22 nm/150 nm,in y directioin (vertical direction) is 15 nm/150 mm the displacement excursion of emergent beam in x direction is 26 nm/150 mm,in y direction is 28 nm/150 mm.
The pulse energies of 10P(20), 10R(20), 9P(20) and 9R(20) are 5.8 J, 5.8 J, 5.5 J and 5.6 J respectively, at the repetition rate of 200 Hz. The far-field divergence angles are 1.66 mrad (horizontal) and 1.43 mrad (vertical), namely, about 2 times of diffraction limitation.
In order to deal with large problems, a pair of trust region subproblems in horizontal and vertical subspaces is used to replace the general full trust region subproblem.
The horizontal trust region subproblem in the algorithm is only a general trust region subproblem while the vertical trust region subproblem is defined by a parameter size of the vertical direction subject only to an ellipsoidal constraint.
That is, the plot with the fitted response ? on the horizontal axis and the observed y on the vertical axis can be used to visualize the link function.
Results showed that topographic characteristics and disturbance pattern have much more impacts on the distribution of landscape elements than do horizontal geographical position in the study area.
With respect to horizontal distribution, roots (d>amp;lt;10 mm) under SDI were distributed mainly near the subsurface emitters and the amount of roots in 3 m in a row under SDI were 50% less than under CK.
A method based upon simple diffraction theory is described for the calculation of modified paraboloid reflectors to produce from a point source a shaped beam of arbitrary shape in one plane and uniformly narrow in the perpendicular planes. A specific application of the shaped beam antennas is in connection with radar antennas designed for height finding. In this case the antenna must have a sharp elevation beam for obtaining precise elevation information and a rapid elevation scan. The beam must be relative...
The present paper gives a report on a study of the life his- tory of a destructive pest, Melanauster chinensis Forster, of citrus trees in Foochow during the years 1951 and 1952. It has been found that the adults lay eggs beginning from the last part of May until the end of July. Eggs are inserted in the bark of the tree trunk about 1. 4 inches from the ground. Incubation period lasts from 9 to 14 days. After hatching the young larvae feed under the bark for three or four months. In October they bore into t...
The natural vegetation of Shantung Province, in the north temperate zone, is of the aestisilvae type. As the natural conditions vary in different parts of this province, the vegetation may be divided into the following four regions: 1. Alluvial plain of the Yellow River: This region is located at the northern part of this province. The saline soil is unfavorable for the growth of most plants. The following plants are characteristic: Tamarax chinensis, Apocynum venetum, Suaeda salsa, S. glauca, Artemisin cap...
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