279,122 research outputs found
Mary Alexander Senior Recital, May 12, 1959
No full textConcert program for Mary Alexander Senior Recital, May 12,
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Steeplechase photograph from the Alexander G. Olsen Papers
No full textBlack-and-white photograph of horses and riders during steeplechase, from the Alexander G. Olsen Papers, date and location unknown.Alexander G. Olsen graduated from Norwich University with a degree in civil engineering in 1920. Following his graduation, he served in the U. S. Army and was stationed in the Philippines during World War II. He was first report killed, then missing in action, in the Spring of 1942. Transcription of the letter provided by the Olsen family. Transcriptions may be subject to human error
Steeplechase photograph from the Alexander G. Olsen Papers
No full textBlack-and-white photograph of horse and rider during steeplechase, from the Alexander G. Olsen Papers, date and location unknown.Alexander G. Olsen graduated from Norwich University with a degree in civil engineering in 1920. Following his graduation, he served in the U. S. Army and was stationed in the Philippines during World War II. He was first report killed, then missing in action, in the Spring of 1942. Transcription of the letter provided by the Olsen family. Transcriptions may be subject to human error
Steeplechase photograph from the Alexander G. Olsen Papers
No full textBlack-and-white photograph of horses and riders during steeplechase, from the Alexander G. Olsen Papers, date and location unknown.Alexander G. Olsen graduated from Norwich University with a degree in civil engineering in 1920. Following his graduation, he served in the U. S. Army and was stationed in the Philippines during World War II. He was first report killed, then missing in action, in the Spring of 1942. Transcription of the letter provided by the Olsen family. Transcriptions may be subject to human error
Subset Sum Quantumly in 1.17^n
No full textWe study the quantum complexity of solving the subset sum problem, where the elements a_1, ..., a_n are randomly chosen from Z_{2^{l(n)}} and t = sum_i a_i in Z_{2^{l(n)}} is a sum of n/2 elements. In 2013, Bernstein, Jeffery, Lange and Meurer constructed a quantum subset sum algorithm with heuristic time complexity 2^{0.241n}, by enhancing the classical subset sum algorithm of Howgrave-Graham and Joux with a quantum random walk technique. We improve on this by defining a quantum random walk for the classical subset sum algorithm of Becker, Coron and Joux. The new algorithm only needs heuristic running time and memory 2^{0.226n}, for almost all random subset sum instances
Inverse scattering designs of optical waveguides and fibres
No full textOptical fibres and waveguides have become vital components in communication systems ranging from on-chip interconnects in datacentres, to trans-oceanic submarine communication cables. Typically, they are designed in a trial-and-error manner and the objective of this thesis was to investigate their inverse design using a method known as inverse-scattering. In contrast to methods of design optimisation where an initial refractive form of index profile of some kind must be chosen, inverse-scattering makes no such assumptions other than that of which modes are carried by the structure and what their respective propagation constants are.Initially, the control over group-velocity dispersion in a single-mode planar waveguide with fixed propagation constant was investigated by considering the form of the transverse reflection response by which the modal properties of the waveguide may be specified, as discussed in the literature. It was demonstrated that common features of dispersion-engineered waveguides were obtained corroborating their use in the existing literature and further understanding of these features was developed.Extending the study to multimode planar waveguides through the application of an inverse-scattering method rooted in the quantum mechanical community, the properties of multiple guided modes, such as their group-velocities and modal gain were controlled. The realisation that both gain and loss are required in a refractive index profile to have exact equalisation of modal gain across multiple modes was novel and differed from existing approaches using genetic algorithms. In addition to this, the design of waveguide couplers by which power can be transferred from one waveguide to another was considered by an approach differing from that of the increasingly popular supersymmetric (SUSY) approach in the literature.Attention turned to the design of few-mode optical fibres which are at the forefront of technology. Since the planar waveguide designs above were found to contain ‘depressions’ and ‘rings’, similar such features were investigated in an optical fibre based upon the knowledge that there were similarities in the modal intensity profiles of the first few linearly polarised (LP) modes in a fibre, and that of the TE modes in planar waveguides. Core depressions and ‘rod-like’ refractive index perturbations were implemented and found to increase the spacing between mode groups.Following on from the above successes, inverse-scattering techniques were applied directly to the cylindrical symmetry of optical fibres and their associated LP modes. A particular feature of this work was the realisation that the propagation constants of such modes can only be specified at the start of the design process for a fixed value of the azimuthal symmetry of the fibre mode. A finding by other researchers using the SUSY technique had been that the modes in coupled fibres (trunk-partner pairs) could only be ‘matched’ when the azimuthal symmetry of the trunk and partner modes differed. The inverse-scattering method in this thesis, on the other hand, does not have this limitation
Alexander Hamilton: The Unloved and Forgotten Founding Father
No full textAs Americans, we tend to place a high importance on our Founding Fathers. There are streets, schools, monuments, cities, money and more all bearing the name or image of Founding Fathers. In looking at these it becomes apparent that history has not treated all of the Founding Fathers kindly, or equally. Alexander Hamilton, who was undeniably vital to the country?s formation, has become forgotten and actually viewed unfavorably. This negative perception that people have of Alexander Hamilton has been somewhat written about, but among scholars no one has been able to pinpoint its origin. The goal of this paper is to analyze the theories that have been previously written, combined with letters from Hamilton and his peers, in an attempt to come to a conclusion regarding Hamilton's perhaps unfounded bad reputation. Based on this method, a new theory has been found by looking at the previous theories in a new way: as a whole. Alexander Hamilton has come to be regarded with a negative reputation because of his disagreements with Thomas Jefferson, his own personality flaws, combined with Americans tendency to push him away because he reminds us of facts we would rather not remember. Hamilton was also an easy target for those seeking to attack him. This uneven memory of the Founding Fathers is changing though, with new and more truthful biographies about the individuals being published
Alexander Winton driving automobile
No full textReproduction of a photograph depicting inventor Alexander Winton driving a Winton automobile, manufactured in Cleveland, Ohio. The picture is possibly of a failed attempt made by Winton made in May 1901 to drive cross country. Beginning in San Francisco he crossed the Sierra Nevada mountains, but stopped in Nevada due to the difficult desert terrain.
Alexander Winton was born in Grangemouth, Scotland, on June 20, 1860 and died on June 21, 1932
Charlie May Simon materials
No full textThis collection contains materials relating to Arkansas author Charlie May Simon
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