Read or Download Design Essentials: The Quilters Guide PDF

Similar needlecrafts & textile crafts books

Additional info for Design Essentials: The Quilters Guide

Example text

Hence, with increasing 0, the rate of increase of lln decreases and lln itself approaches a constant value. al relation between the value of lln in the steady state (llnsl ) and olKI for Langevin chains. The above applies to steady-state flow but the spinning process is in the non-steady state in terms of molecular orientation. Thus, lln is always smaller than lln Sl . 58 Textile Spinning, Weaving and Designing Assuming a single delay time D~nlDt 't, = (~nst- ~n)/'t then through crIKT, ~nst is a function (and through T, function) of position and time.

The base of rules has a tree structure. This structure highlights the backward chaining in relation to the forward chaining, but the latter remains possible. So, suggesting hypotheses and validating values can be proposed for some properties and this makes it possible to operate the inference engine by changing at will the initial state of the base of knowledge and of the pile of hypotheses to suggest. Inference engines. It is a deductive computer system which exploits the knowledge of the previous base by considering them as data and therefore as different types of knowledge which are likely to be changed.

The nucleation rate of polymers at a constant temperature is greatly accelerated by molecular orientation. For the present, however, there is no generai formula expressing the quantitative relation between the crystallisation rate and molecular orientation. Furthermore, the crystallisation under molecular orientation may be different from ordinary unoriented crystallisation, which is expressed in terms of the nucleation rate, the growth rate of the nucleus and the mode of geometrical growth. At any rate, the process of structural change in oriented crystallisation has never been clarified.

Download PDF sample