FCC Record


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Telecommunication, Parts 80 to End


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The Code of Federal Regulations is a codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the United States Federal Government.




Frequency and Time


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Experimental and Applied Mechanics, Volume 4


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Experimental and Applied Mechanics, Volume 4: Proceedings of the 2012 Annual Conference on Experimental and Applied Mechanics, the fourth volume of seven from the Conference, brings together 54 contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Experimental and Applied Mechanics, including papers on: Fracture & Fatigue Microscale & Microstructural Effects in Fatigue & Fracture Material Applications Composite Characterization Using Digital Image Correlation Techniques Multi-Scale Simulation and Testing of Composites Residual Stress Inverse Problems/Hybrid Methods Nano-Composites Microstructure Material Characterization Modeling and Uncertainty Quantification Impact Behavior of Composites




Seismic Exploration Methods


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This book describes the seismic methods used in geophys ical exploration for oil and gas in a comprehensive, non rigorous, mathematical manner. I have used it and its predecessors as a manual for short courses in seismic methods, and it has been extensively revised time and again to include the latest advances in our truly remark able science. I once called it, "Advanced Seismic Inter pretation," but the geophysicists who attended the courses always wondered when I was going to start dis cussing interpretation. They discovered at the end that I never did discuss interpretation as they knew it. No men tion was made of reflection picking, posting times, map ping, contouring, and things they already knew perfectly well. Instead, I discussed Fourier transforms, sampling theory, impulse responses, distortion operators, Wiener filters, noise in f-k space, velocity spectra, wave-equation migration, and direct detection of hydrocarbons as each of these topics appeared on the seismic scene. I wanted the geophysicists to think beyond the routine ofinterpre tation, to develop a better understanding of why seismic sections look as they do, to have a better feel for what digital processing is doing, for good or evil, to the seismic data. I attempted to stretch their minds. Whitehead said it best: "A mind once stretched by a new idea can never shrink to its former dimension. " May this book be a suc cessful mind-stretcher. R. L.







The Varieties of Orthographic Knowledge


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The role of orthography in reading and writing is not a new topic of inquiry. For example, in 1970 Venezky made a seminal contribution with The Structure of English Orthography in which he showed how both sequential redundancy (probable and permissible letter sequences) and rules of letter-sound correspondence contribute to orthographic structure. In 1972 Kavanagh and Mattingly edited Language by Eye and by Ear which contained important linguistic studies of the orthographic system. In 1980 Ehri introduced the concept of orthographic images, that is, the representation of written words in memory, and proposed that the image is created by an amalgamation of the word's orthographic and phonological In 1981 Taylor described the evolution of properties. orthographies in writing systems-from the earliest logographies for pictorial representation of ideas to syllabaries for phonetic representation of sounds to alphabets for phonemic representation of sounds. In 1985 Frith proposed a stage model for the role of orthographic knowledge in development of word recognition: Initially in the logographic stage a few words can be recognized on the basis of partial spelling information; in the alphabetic stage words are recognized on the basis of grapheme-phoneme correspondence; in the orthographic stage spelling units are recognized automatically without phonological mediation. In 1990 Adams applied connectionism to an analysis of the orthographic processing of skilled readers: letter patterns emerge from the association units linking individual letters.




Federal Register


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I am heartily ashamed


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The second installment in Gavin K. Watt's Revolutionary War trilogy, I am heartily ashamed picks up where A dirty, trifling piece of business leaves off. It's a new year with new challenges. An incredibly fierce Canadian winter was endured before raiding was resumed against the enemy's frontiers. The rebels' Mohawk region defence soon fell into disarray when two colonels jousted for control. Continued negotiations encouraged Vermont to not support the rebellion and the republic became a haven for loyalists escaping persecution. Vermont's adherents even felt free to militarily challenge New York. After the poor results of Ross's October raid, Haldimand chose to alter his strategy. For years, his native allies had sent small war parties against the frontiers and, that summer, he gave command of large projects to First Nations leaders whose methods greatly challenged the rebels. A new British ministry announced a cessation of arms in July, soon followed by peace talks. Despite the ceasefire, Washington ordered an attack on the new British post at Oswego, which failed miserably. When Haldimand discovered that the treaty's articles threatened the security of Canada and made no provisions for the natives or loyalists, he confessed, "My soul is completely bowed down with grief... I am heartily ashamed."




Heinrich Hertz: Classical Physicist, Modern Philosopher


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The sub-title of this symposium is accurate and, in a curious way, promises more than it states: Classical Physicist, Modem Philosopher. Heinrich Hertz, as the con summate experimentalist of 19th century technique and as brilliant clarifying critic of physical theory of his time, achieved one of the fulfilments but at the same time opened one of the transition points of classical physics. Thus, in his 'popular' lecture 'On the Relations Between Light and Electricity' at Heidelberg in the Fall of 1889, Hertz identified the ether as henceforth the most fundamental problem of physics, as the conceptual mystery but also the key to understanding mass, electric ity, and gravity. Of Hertz's demonstration of electric waves, Helmholtz told the Physical Society of Berlin: "Gentlemen! I have to communicate to you today the most important physical discovery of the century. " Hertz, philosophizing in his direct, lucid, pithy style, once wrote "We have to imagine". Perhaps this is metaphysics on the horizon? In the early pages of his Principles of Mechanics, we read A doubt which makes an impression on our mind cannot be removed by calling it metaphysical: every thoughtful mind as such has needs which scientific men are accustomed to denote as metaphysical. (PM23) And at another place, concerning the terms 'force' and 'electricity' and the alleged mystery of their natures, Hertz wrote: We have an obscure feeling of this and want to have things cleared up.




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