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An Ecological Study Of Ditylenchus Dipsaci (Kuhn) Filipjev. In A Field Of Alfalfa, Shu-Ten Tseng
An Ecological Study Of Ditylenchus Dipsaci (Kuhn) Filipjev. In A Field Of Alfalfa, Shu-Ten Tseng
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Ditylenchus dipsaci (Kuhn) Filipjev. is one of the most destructive nematodes to crop plants. It attacks and damages more than 300 species of cultivated and uncultivated plants. The nematode can be differentiated into many races, each of them having a preference for a group or even a single plant species.
Alfalfa stem nematode is one of the races in this species which attacks the above ground portion of alfalfa but does not infest the roots. Larvae of this nematode may migrate from the plant tissue to soil in moist conditions. These nematodes migrate actively to nearby plants or are carried …
A Monte Carlo Study Of Non-Linear Regression Theory, Ya-Ming Liu
A Monte Carlo Study Of Non-Linear Regression Theory, Ya-Ming Liu
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Multiple regression provides the capability of using non-linear functions to fit various curvilinear surfaces. These non-linear functions are, however, linear in the parameters. Non-linear term of the variables such as X2, X3, ln X, X, YX are incorporated in a linear model. For example:
Y = b0 + b1 x1 + b2 x12 + b3 lnx2 + ϵ
Many practical situations require the fitting of mathematical functions which are non-linear in the parameters and perhaps the variables. For example:
Y = b, eb2X + ϵ
A Study Of Adolescents' Reactions To Temporary Absences From Home In A Crisis Situation, Imogene Ward Christensen
A Study Of Adolescents' Reactions To Temporary Absences From Home In A Crisis Situation, Imogene Ward Christensen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This study is a description of the reactions of adolescents, who had opportunities for independence and growth toward maturity as a result of a crisis situation.
Special consideration is given to (a) the variety of heroic and realistic experiences had during the flood; (b) personal and social adjustments in the unique setting of dormitory living (separated from families); and (c) the academic achievements in the emergency learning situation.