 501  198. Nevertheless both these processes act through the same neural pathways available to physiological stimulations. In the economy of nature it seems possible that the alterations in physiology, structure and chemistry seen in these simplified models differ from those in behavioral learning in degree but not necessarily in kind. At least they provide something to look at and to work with. Ultimately they will need to be related to the parametric aspects of behavior disclosed by experimental psychology. 199. The design of a pulser for short pulse durations with substantially rectangular pulse shape requires the use of high-frequency circuit techniques since frequencies as high as 6° to 100 Mc/sec contribute to the pulse shape and the effects of stray capacitances and inductances become serious. 200. For pulses which are definitely not rectangular, the effective or equivalent pulse duration is either the time measured at some fraction of the maximum pulse amplitude that is significant to the particular application, or the time corresponding to a rectangular equivalent of the pulse in question.
Раздел 2. УПРАЖНЕНИЯ НА ГРАММАТИЧЕСКИЕ ТРУДНОСТИ ПЕРЕВОДА(Псевдопростые грамматические формы) 1. After the 1242-nd orbit on November 23, 1962, the command channel ceased responding. 2. Superposition of the falling regions of these curves shows the gain to be independent of rs. 3. In the chapter on experimental techniques, we are given a good insight into many of the special problems that have to be solved. 4. The neutron may be considered in fact as being exposed to a time-dependent electric field. 5. On the basis of the product being a single isomer, the intermediate radical appears to react with iodine. 501 |
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