Force and thermal effect are dominant in giving rise to variation of bearing dynamic stiffness vibration. On the basis test theoretical analysis, vibration model angle contact ball considering friction state is established. Firstly, based on quasi-statics hydrodynamic lubrication theory, motion force relation between each parts determined by effect. Secondly, power consumption calculated adopti...

1. Overview Comparative statics (called sensitivity analysis in engineering fields) means characterizing how the endogenous outcomes of a model change with its exogenous parameters. The " statics " in the name is because one is simply comparing two versions of the model, for two different values of exogenous parameters, rather than tracing out a dynamic process of change. One can do comparative...

Learning in the subject of Engineering Statics deserves significant attention. First, Statics lays the foundation for subsequent courses, namely Dynamics and Strength of Materials, both of which rely heavily on free body diagrams and on recognizing the combined effect of forces. While there are new ideas which are emphasized in engineering dynamics, instructors in this subject inevitably find t...

My dissertation consists of three chapters. Chapters 1 and 2 both address extensions to existing monotone comparative statics results for constrained optimization problems using lattice programming techniques. Chapter 3 applies monotone comparative statics results to the question how environmental regulation affects investment in innovation in imperfectly competitive markets. Generally we can d...