TWO COLOR MUTATIONS OF RATS WHICH SHOW PARTIAL COUPLING.

TWO COLOR MUTATIONS OF RATS WHICH SHOW PARTIAL COUPLING.
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显示部分耦合的大鼠的两种颜色突变。

DOI:
10.1126/science.42.1075.193
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发表时间:
1915
期刊:
影响因子:
56.9
通讯作者:
S. Wright
S. Wright
中科院分区:
综合性期刊1区
文献类型:
--
作者:
W. Castle;S. Wright

文献摘要

被引文献

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标记。特别是一位发言者,由于几次听询的结果,在上半年被评为10%。在不同的发言者中,有六个人在两个学期都听到了,因此比其他人更直接可比。他们第一学期的平均成绩是64%,第二种是百分之九十二。也就是说,在第一学期,每三个单词中就有一个以上是听不懂的,而在第二学期,只有大约十二个单词中有一个是听不懂的。在座位V上的效果更加惊人。在处理小教堂之前,平均可听度为71%,这与在更远的距离上完全相同,表明稍微靠近说话者所获得的优势完全被混响的干扰所抵消。注意力,就像在AA座位上一样,是小心的或紧张的。治疗后,平均听力提高到近96%,几乎完美的听力,在大多数情况下,注意力被认为是容易的。在Q座位上,离扬声器大约55英尺,可听度从第一学期的平均95%上升到第二学期的100%。结果总结如下,以便于比较。
marked. One speaker in particular, as the result of several hearings, in the first half-year was rated at 10 per cent., in the second at 76 per cent. Of the different speakers, six were heard in both of the semesters, and are thus more directly comparable than the others. Their average for the first semester was 64 per cent., for the second, 92 per cent., that is, while during the first semester more than one word out of every three was unintelligible, only about one in twelve was unheard in the second. The effect was even more striking in seat V. Before the treatment of the chapel the average audibility was 71 per cent., exactly the same as at the greater distance, showing that the advantage gained by a somewhat nearer approach to the speaker was completely nullified by the disturbances from reverberation. The attention, as in the seat AA, was careful or strained. After the treatment the average audibility rose to nearly 96 per cent., nearly perfect hearing, and the attention in most cases was noted as easy. I n seat Q, about fifty-five feet from the speaker, the audibility rose from an average of 95 per cent. in the first semester to 100 per cent. in each separate case in the second. The results are summarized below for more easy comparison.