General theory or jointed bow girders

Measuring bow force in bowed string performance: Theory and implementation of a bow force sensor

A sensor has been developed which allows measurement of the force exerted by the bow on the string (bow force) during violin performance. The bow force is deduced from measurement of the transversal force at the termination of the bow hair at the frog. The principle is illustrated with an experiment that demonstrates how the bending of the stick and variations in bow hair tension influence the ...

Response of Fire Exposed Steel Bridge Girders

Model Studies on Plate Girders

Tests on eighteen small scale models which simulate the elastic and post-buckling behaviour of plate girders when subjected to shear loading are reported and discussed. Themodels were fabricated of steel and Araldite; the major aim was to assess whether small scale models can be employed to study shear buckling problems. A secondary object was to examine whether araldite could be used for predi...

Resource-Advantage Theory: A Snake Swallowing Its Tail or a General Theory of Competition?

Deligonul and Qavu^gil (1997) conduct a paradigm-level analysis of resource-advantage (R-A) theory. They argue that (1) Hunt and Morgan (1995) offer resource-advantage theory as a replacement for perfect competition theory, (2) a successful challenger to any theory must come from a new paradigm, (3) but both perfect competition and RA theory come from the same paradigm. Therefore, (4) the repla...

Violin bow vibrations.

The modal frequencies and bending mode shapes of a freely supported tapered violin bow are investigated by finite element analysis and direct measurement, with and without tensioned bow hair. Such computations are used with analytic models to model the admittance presented to the stretched bow hairs at the ends of the bow and to the string at the point of contact with the bow. Finite element co...