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Reverse correlation was used in conjunction with ternary white noise to estimate the first-order spatiotemporal receptive-field structure of LGN cells in the anesthetized, paralyzed cat. Based on a singular-value decomposition of these data, we conclude that most LGN cells are approximately space-time separable. An analysis of the timecourses of the first(More)
Instruments in the #ute family, unlike most wind instruments, are played with the input of the instrument open to the atmosphere. Consequently, they operate at minima in the spectrum of acoustic input impedance. Detailed examination of these minima requires measurements with large dynamic range, which is why the #ute has not been hitherto investigated in(More)
In accumulating a sum such as in a numerical integration with a large number of intervals, the sum itself becomes much larger than the individual addends. This may produce a less accurate sum as the number of intervals is increased.Separate variables can be established as accumulators to hold partial sums within various distinct intervals. Thus, the(More)
This paper discusses limitations of programming aptitude tests. The use of multiple-choice type questions, the testwiseness of the college graduate group, and the inclusion of questions of mathematical information tend to diminish the effectiveness of such tests as predictors of success in business programming. Timed tests favor the faster worker over the(More)
Hurricane-force wind speeds can have a large societal impact and in this paper microwave C-band cross-polarized (VH) signals are investigated to assess if they can be used to derive extreme wind-speed conditions. European satellite scatterometers have excellent hurricane penetration capability at C-band, but the vertically (VV) polarized signals become(More)
A unique feature of this test is that it consists of only three problems. The second problem, moreover, depends on the first and the third problem depends on the two earlier ones. Each of the problems is more intricate than the preceding one. Although one hour of working time has proved adequate for about half the number of students who have taken the test,(More)
This test was used in an experimental form in varying numbers by a total of 14 companies and government agencies that had administered the test and provided information subsequently on their supervisors' rankings of the persons tested after receiving our rankings based on the persons' performance on the test. The supervisors' evaluations were based on the(More)
An earlier version of this test, Experimental Form A, was administered to 295 programming students in 7 participating schools. The test books were then returned to the author for grading. The results showed Pearson coefficients of correlation between the test rankings and the grades in the programming courses ranging from .14 to .69 for the 192 men students(More)