- dy: Dy ＝【化學】 dysprosium. dy ＝penny.
The probability of finding the particle in the volume element at point(x. y. z. )with edges dx. dy. dz is as follows.
The global convergence of a new kind of dy - conjugate gradient method
Dy model crawler plastic traction engine
The thesis is based on income question, forest coverage rate and grop production. to beging with, date envelopment analysis is proved that it can be applicated into grain for green in shan - bei district, and then in view of the fact, seven esential factors which have influence on the project are found out : expense of dam, expense of crop, expense of cash tree, expense of defense tree, other economic crop, expense of grass and graziery ; and the output factors include : income of gdp, pure income per captia, the area of decreasing land loss, graziery income, crop production, income of tree, the totle income of economic crop. after the date of each facts are puted into dea model, unefficiencial decision making units ( dmu ) found. the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure. at the same time, taking into account some possible problems in or after grain for green in shan - bei district, the thesis bring out some propesal to improve the circ umstance, enhance the life level and put the relation of population, resource and circumstance into a healthy orbit
The old goat who i found expiring, dy d in the mouth of the cave, the next day after i made this discovery ; and i found it much easier to dig a great hole there, and throw him in, and cover him with earth, than to drag him out ; so i interr d him there, to prevent the offence to my nose