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A Lever Long Enough: A History of Columbia's School of by Robert McCaughey

By Robert McCaughey

During this entire social background of Columbia University's institution of Engineering and utilized technological know-how (SEAS), Robert McCaughey combines archival learn with oral testimony and modern interviews to construct either a serious and celebratory portrait of 1 of the oldest engineering colleges within the United States.

McCaughey follows the evolving, sometimes rocky, and now built-in dating among SEAS's engineers and the remainder of the Columbia collage pupil physique, school, and management. He additionally revisits the interplay among the SEAS employees and the population and associations of town of recent York, the place the college has resided because its founding in 1864. He compares the old struggles and achievements of the school's engineers with their present-day battles and accomplishments, and he contrasts their educating and examine methods to these in their friends at different free-standing and Ivy league engineering colleges. What starts as a localized background of a college striving to outline itself inside a school identified for its strengths within the humanities and the social sciences turns into a much broader tale of the transformation of the technologies right into a severe element of American expertise and schooling.

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Extra info for A Lever Long Enough: A History of Columbia's School of Engineering and Applied Science Since 1864

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For simplicity, the impulse functions and plane waves are first analyzed. 1 Impulse Functions The impulse function is typically introduced as a time function in signal analysis and processing, in the form of ∞ δ(t) =  0 t=0 otherwise 23 24 Acoustical Sensing and Imaging with the normalization formula ∫ δ(t) dt = 1 In the field of imaging, the functions include spatial variables, which is in the form of four-dimensional distributions f(x, y, z; t). So, it is necessary to examine the representations and meanings of impulse functions in the space domain.

Subsequently, matched filtering is performed. Step 5: Integration: The final step is to integrate the combined signal twice. The result is a complex number α + jβ, of which the real and imaginary parts are the first two directional cosines. 5 Active Modality In this chapter, a simple technique was presented for bearing-angle estimation for UUV underwater geolocation and navigation. The algorithm was originally designed as the replacement for the conventional peak-phase approach for the systems with twin transmission waveforms and the ­polarity of 180° phase offset.

2 Plane wave with bearing angle θ = 90°. 26 Acoustical Sensing and Imaging wavelength λ. Accordingly, we can represent the wave pattern in the form of  j 2πx  g( x , y ) = A exp   λ  We can also describe it as a coherent pattern with spatial frequency fx = 1/λ. 3. Along the x axis, the period of the single-frequency variation is λ/sin θ, corresponding to the spatial frequency fx = sin θ/λ. If we also examine the distribution along the y axis, we find the period of the coherent wave distribution is λ/cos θ, corresponding to the ­spatial ­frequency f y = cos θ/λ.

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