Investigation of weld joint detection capabilities of a coaxial weld vision system

This report describes the second phase of a series of evaluations of a vision-based welding control sensor for the Space shuttle Main Engine Robotic Welding System. The robotic welding system is presently under development at the Marshall Space Flight Center. This evaluation determines the factors influencing the minimum joint gap required for consistent detection of the weld joint

Density fluctuations and the structure of a nonuniform hard sphere fluid

We derive an exact equation for density changes induced by a general external field that corrects the hydrostatic approximation where the local value of the field is adsorbed into a modified chemical potential. Using linear response theory to relate density changes self-consistently in different regions of space, we arrive at an integral equation for a hard sphere fluid that is exact in the limit of a slowly varying field or at low density and reduces to the accurate Percus-Yevick equation for a hard core field. This and related equations give accurate results for a wide variety of fields

Improved AURA k-Nearest Neighbour approach

The k-Nearest Neighbour (kNN) approach is a widely-used technique for pattern classification. Ranked distance measurements to a known sample set determine the classification of unknown samples. Though effective, kNN, like most classification methods does not scale well with increased sample size. This is due to their being a relationship between the unknown query and every other sample in the data space. In order to make this operation scalable, we apply AURA to the kNN problem. AURA is a highly-scalable associative-memory based binary neural-network intended for high-speed approximate search and match operations on large unstructured datasets. Previous work has seen AURA methods applied to this problem as a scalable, but approximate kNN classifier. This paper continues this work by using AURA in conjunction with kernel-based input vectors, in order to create a fast scalable kNN classifier, whilst improving recall accuracy to levels similar to standard kNN implementations

Seam tracking performance of a Coaxial Weld Vision System and pulsed welding

This report describes a continuation of a series of tests on the Coaxial Weld Vision System at MSFC. The ability of the system to compensate for transients associated with pulsed current welding is analyzed. Using the standard image processing approach for root pass seam tracking, the system is also tested for the ability to track the toe of a previous weld bead, for tracking multiple pass weld joints. This Coaxial Weld Vision System was developed by the Ohio State University (OSU) Center for Welding Research and is a part of the Space Shuttle Main Engine Robotic Welding Development System at MSFC

The Life of Joseph F. Gammon

Joseph F. Gammon, a native of Halifax, Nova Scotia, Canada and a carpenter by trade came to Savannah, Georgia during the first half of the nineteenth century,probably around 1827 and remained in Savannah until his death in 1865. He married a woman from Savannah with whom he apparently had six children; only one of whom- survived him. After the death of his first wife, Sarah, of pleurisy in 1853; he married Miss Elizabeth Whitten· of Newburyport, Massachusetts in 1854 but the marriage was a brief one as she died of consumption, or tuberculosis, in 1858! Fourteen months later, Gammon was married a third and final time to Miss Margaret McDod of Philadelphia, Pennsyl vania who survived him!\u27 In addition to Joseph, his brother, Benjamin, and two sisters, susan and EliEbetb, also came from Nova Scotia to make Savannah their new home i. Benjamin, also a carpenter, and fifteen years his brother\u27s junior!\u27 inherited Joseph\u27s carpentry tools!upon his death. Professiaially, it is possible that Joseph and, perhaps, his brother Benjamin as well were involved in some aspect of ship building, it being one of the most important industries of Nova Scotia at the t i me coupled with Savannah\u27s importance as a commercial port!\u27 Although little information can be obtained concerning Gammon\u27s professional life, he was evidently prosperous, having accumulated a personal estate worth,· at the time of his death, ·nearly $23,000, which included a good deal of real estate situated in the heart of Savannah \u27https://digitalcommons.georgiasouthern.edu/sav-bios-lane/1082/thumbnail.jp

Befehl 1st Befehl

Over the years educators have railed against poor scholarship, lack of interest, poor grammar and the general incompetence or ineptness of students. Many of these criticisms were correctly laid at the door of students. The attitudes developed early in life, nurtured in elementary and secondary schools and ripened in undergraduate colleges and universities, were often harvested by the graduate schools. These attitudes, good or bad but more often merely neutral, would supply a list of almost inexhaustible possibilities. It is this writer\u27s purpose to focus in on four which, because of their influence upon law students, can be carried on into the practice of law with adverse effect. These are lack of imagination, absence of creativeness; lack of concern about people, whether individually or in the larger term-the human condition; and a mercenary Philistinism

Book Review

Review of the book “The Law of the European Economic Community-A Commentary on the EEC Treaty” by Hans Smit and Peter Herzog

Comparative Law of Privacy

At this time there is little doubt that the right of privacy is well established in most American jurisdictions. In Europe the situation is much the same. There the concept of Fault and Moral Injury affords the proper climate for its further development and continued protection. The fact that Continental countries have difficulty in tacking down the concept to a particular category of right, and even, sometimes, to a particular article in their Code, is, after all, inconsequential. Only in England is the right slow to come into its own, but the increasing awareness of the English Bench and Bar that there should be such a right would appear to be the harbinger for future recognition and protection. However, due to a certain traditional reluctance on the part of the English judges to blaze new trails in this area, it is more likely that the firs tbreakthrough of this right will come from Parliament

Comparative Law of Privacy

At this time there is little doubt that the right of privacy is well established in most American jurisdictions. In Europe the situation is much the same. There the concept of Fault and Moral Injury affords the proper climate for its further development and continued protection. The fact that Continental countries have difficulty in tacking down the concept to a particular category of right, and even, sometimes, to a particular article in their Code, is, after all, inconsequential. Only in England is the right slow to come into its own, but the increasing awareness of the English Bench and Bar that there should be such a right would appear to be the harbinger for future recognition and protection. However, due to a certain traditional reluctance on the part of the English judges to blaze new trails in this area, it is more likely that the firs tbreakthrough of this right will come from Parliament