Tracer of electrical conduit or pipes

Device matches ends of a buried conduit, transversing an inaccessible area, without cutting the current

Can Hiring Quotas Work? The Effect Of The Nitaqat Program On The Saudi Private Sector

This paper studies the effects of quota-based labor regulations on firms in the context of Saudi Arabia\u27s Nitaqat program, which imposed quotas for Saudi hiring at private firms. I use a comprehensive firm-level administrative dataset and exploit kinks in hiring incentives generated by the quotas to estimate the effects of this policy. I find that the program increased native employment at substantial cost to firms, as demonstrated by increasing exit rates and decreasing total employment at surviving firms. Firms without any Saudi employees at the onset of the program appear to bear most of these costs

Conceptual design for spacelab pool boiling experiment

A pool boiling heat transfer experiment to be incorporated with a larger two-phase flow experiment on Spacelab was designed to confirm (or alter) the results of earth-normal gravity experiments which indicate that the hydrodynamic peak and minimum pool boiling heat fluxes vanish at very low gravity. Twelve small sealed test cells containing water, methanol or Freon 113 and cylindrical heaters of various sizes are to be built. Each cell will be subjected to one or more 45 sec tests in which the surface heat flux on the heaters is increased linearly until the surface temperature reaches a limiting value of 500 C. The entire boiling process will be photographed in slow-motion. Boiling curves will be constructed from thermocouple and electric input data, for comparison with the motion picture records. The conduct of the experiment will require no more than a few hours of operator time

Graph for locked rotor current

Graph determines effect of stalled motor on a distribution system and eliminates hand calculation of amperage in emergencies. Graph is useful to any manufacturer, contractor, or maintenance department involved in electrical technology

Combining remotely sensed and other measurements for hydrologic areal averages

A method is described for combining measurements of hydrologic variables of various sampling geometries and measurement accuracies to produce an estimated mean areal value over a watershed and a measure of the accuracy of the mean areal value. The method provides a means to integrate measurements from conventional hydrological networks and remote sensing. The resulting areal averages can be used to enhance a wide variety of hydrological applications including basin modeling. The correlation area method assigns weights to each available measurement (point, line, or areal) based on the area of the basin most accurately represented by the measurement. The statistical characteristics of the accuracy of the various measurement technologies and of the random fields of the hydrologic variables used in the study (water equivalent of the snow cover and soil moisture) required to implement the method are discussed