Section 1 Soil three phases Constitution Soil density and bulk density (一) Soil density( or Particle density) Soil density is the density of the solid soil particles only; the measurement does not include water weight or pore (air)space. The dominant soil minerals-quartz, feldspars micas, and clay minerals-

Structure Market supply Short-run- supply and equilibrium Long -run- supply and equilibrium Long -run- implications for taxation Fixed inputs and economic rent(经济租金)

Structure The cost minimization problem Average costs Returns to scale and total and average costs Short run and long run costs

History and development of Endocrinology(1) Roughly a hundred years ago, Starling coined the term hormone to describe secretin, a substance secreted by the small intestine into the blood stream to stimulate pancreatic secretion. In his Croonian Lectures, Starling considered the endo- crine and nervous systems as two distinct mechanisms for coordination and control of organ function. Thus, endocrinology found its first home in the discipline of mammalian physiology

Contents Dominant strategy Nash equilibrium Prisoner's' dilemma and repeated games Multiple equilibria and sequential games Pure and mixed strategies

Individuals who achieve goals and results with and through other people by making decisions, allocating resources, and directing activities

Some languages have different forms or you French‘ tu/vous”. German“ du sie for example). These may originally have indicated number(vous\and\Sie\) used for plural forms but now show different levels of formality with\tu and\a'\ being more familiar,“\vos” and\Sie” more polite

Language is an essential and important part of a given culture and the impact of culture up a given language is something intrinsic and indispensable

Objective 1 Definition types and mechanism of osteoporosis 2 Diagnosis, prevention and treatment of osteoporosis 3 Etiology and epidemiology of osteoporosis

Cambridge MA 02139-4307 USA Copyright 2003 Massachusetts Institute of Technology Contents 8 Fitting, Fairing and Generalized Cylinders 8. 1 Least Squares Method of Curve Fitting 8.2 Fairing of Curves and Surfaces 8.2.1 Properties and Definition