Given a Hausdorff uniform space $$X$$ with the countable gage of pseudometrics uniformity , we introduce concept approximate variation function $$f$$ mapping subset $$T$$ reals into : this is infimum family Jordan-type variations all functions $$g:T\to X$$ which differ from in each pseudometric, generated by pseudometric gage, not greater than $$\varepsilon>0$$ . We prove following compactness ...

In 1963, Lopez, Edelist, and Katz demonstrated that electrical stimulation could be used for slowing the heart below its spontaneous rate. These workers noted when pacing the heart of a dog that sudden slowing could consistently be produced when the impulse persisted for about 150 m.sec. They were able to show that this effect was due to stimulation at the "make" and the "break" of the impulse,...

Strain measurements must often be made in the presence of electric and/or magnetic fields which can superimpose electrical noise on the measurement signals. If not controlled, the noise can lead to inaccurate results and incorrect interpretation of the strain signals; and, in severe cases, can obscure the strain signals altogether. In order to control the noise level, and maximize the signal-to...

An experimental method is proposed to characterize the hygroscopic swelling of mold compounds. The method utilizes moiré interferometry, which measures in-plane displacements over a relatively large gage length with submicron measurement sensitivity. Deformations caused by the absorption of moisture in mold compounds are analyzed to determine the coefficient of hygroscopic swelling (CHS). The l...

A silicon load cell (force sensor) is presented which is based on a new operating principle. The force is measured by compressing a meander like strain gage. A second strain gage which is not loaded, is used for temperature compensation and for compensation of bending and stretching stresses in the chip. Also, same changes in zero load resistor values are eliminated. It is shown that the output...