Nair I, Zhang J
Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
Am J Ind Med. 1995 Jul;28(1):23-39. doi: 10.1002/ajim.4700280103.
Magnetic field strength or its surrogate has been used as the measurement of exposure in all studies involving field exposure. Video display terminals (VDTs) are considered a minor source on this scale because its field strengths lie in the low range of magnetic fields. Several experiments show, however, that field strength may not be the only relevant variable in determining exposure. This paper explores the use of a method based on "effects functions" to determine the extent to which the VDT can be distinguished from other sources. It is shown that VDT exposure may be of consequence if exposure depends on certain types of time variation of the field. Because of the incompleteness of science in this area, this is a demonstration of a method rather than an actual demonstration of VDT as a significant source of exposure.
在所有涉及磁场暴露的研究中，磁场强度或其替代指标一直被用作暴露的测量指标。视频显示终端（VDT）在这个尺度上被认为是一个次要来源，因为其场强处于低磁场范围内。然而，一些实验表明，场强可能不是确定暴露的唯一相关变量。本文探讨了一种基于“效应函数”的方法的应用，以确定VDT与其他来源区分开来的程度。结果表明，如果暴露取决于场的某些类型的时间变化，那么VDT暴露可能会产生影响。由于该领域科学的不完整性，这是一种方法的演示，而不是VDT作为重要暴露源的实际证明。
