A general method for synthesizing spatial linkages (derived in a previous paper [1]) is applied to the design of various types of binary links and combined link chains. Equations governing those special points and lines which define the link dimensions are derived. Types and order of loci of such special points and lines and the maximum number of design positions for each link are given. Numerical method for computing these special points and lines are discussed, and a numerical example is presented.
A rigid body is studied in a series of different positions. These positions can be finitely separated, infinitesimally separated, or a combination of the two. A general method for determining the locations of points or lines (in the rigid body) which have their different multiple positions satisfying the constraints of binary links or combined link chains is developed. In a companion paper [10] equations governing the locations of these special points and lines are derived.
Tomato fruit firmness is closely associated with its ripeness stage; as the fruit ripens it softens. Correct usage of the UC Fruit Firmness Tester requires that such variables as location of measurement on the fruit, removal of skin, and plunger (tip) diameter be specified. A negative and highly significant correlation (r = −0.75) exists between firmness measurements with the UC Firmness Tester (a destructive method) and the compression testing device (a nondestructive method). Values obtained by both methods were also highly correlated (r = 0.79, UC Firmness Tester; r = −0.81, compression testing device) with subjective evaluation scores based on finger feel. Two possible minimum firmness limits are suggested for tomato fruits at shipping point and at retail.
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