Ethylene derivatives of formula : where Q is an unsubstituted or substituted phenyl or heterocyclic group, especially a 4-thiazolyl, 1- or 3-pyrazolyl, 1,3-oxazol-4-yl, phenyl or pyridyl group; E is a substituent such as a cyano group; A is a substituent such as a 4-pyrazolyl or thiazolyl group; and B is a substituent such as an alkylcarbonyl group. The first step includes determining a set of initial values for parameters, coefficients, and derivatives based upon linear functional relationships. When the user changes the position of the window, the system determines the new position relative to the other windows and reallocates the execution priorities based upon that window’s new position. The apparatus also includes elements which automate the apparatus for creating the elastomeric nonwoven laminate. Using the same primary process for measuring suds lock, load size can also be ascertained. The shielded connector furthermore defines a pair of insulative supporting sections respectively disposed and supported under the positioning brackets thereby forming a positioning device.