نتایج جستجو برای: wire line logs
تعداد نتایج: 449312 فیلتر نتایج به سال:
A method of measuring the power line wire sag using optical sensors that are insensitive to high electromagnetic fields was proposed. The advantage of this technique is that it is a non-invasive measurement of power line wire elongation using a unique optomechanical system. The proposed method replaces the sag of the power line wire with an extension of the control sample and then an expansion ...
Reactive power in balanced and unbalanced lines constitutes the main problem that is examined in this article. We will describe a balanced line as a line with differential input and output signals. Unbalanced lines, such as the SWER scheme, have to cope with the reactive power problem. However, this problem does not exist in the one wire balanced B-Line scheme. In addition, various methods of g...
Digitized spark-chamber systems using wire arrays are being used for increas ingly complex types of events; their chief virtue is the provision of "on-line II informa tion on the progre ss of the experiment, which we inte rpret as rapid enough to aIIow the results obtained to influence the future course of the experiment. Such on-line operation can also be obtained by several other methods fo...
In this paper a one dimentional position-sensitive X-ray gas detector has been designed, simulated and constructed based on Multi Wire Proportional Chamber (MWPC) with delay line position readout. These kinds of detectors are useful in soft X-ray imaging and are capable of being extended to two dimensions position readout easily. The position resolution of this detector is estimated to be 230µm...
The KEK Accelerator test facility (ATF) [1] extraction line laser-wire system has been upgraded last year allowing the measurement of micron scale transverse size electron beams. The most recent measurements using the upgraded system are presented. The ATF-II extraction line design [2] call for the major upgrade of the existing laser-wire system. We report on the hardware upgrades, including th...
1 INTRODUCTION Electric power utilities have sustained significant damage from lightning. The occurrence of line faults is one result of lightning damage. To prevent it, power utilities adopt various measures of protection from lightning. Transmission line overhead ground wires greatly contribute to a decrease in the number of line faults by preventing direct hits to the power lines. Lightning ...
The human visual system can interpret two dimensional (2-D) line drawings like the Necker cube as three dimensional (3-D) wire frames. We focus attention on a principle to minimize the entropy of angle distribution between line segments in a 3-D wire frame as a concrete definition of the law of pragnanz in Gestalt Psychology. And we implement the principle with the perceptual preference of plan...
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