Construction of regular polygons.

Typewritten sheets in cover. Thesis (M.A.)--Boston University, 1931. Bibliography: p. 57-5

Interview with Arthur Bruce Boenau, June 9, 2005

Arthur Bruce Boenau was interviewed on June 9, 2005 by Michael Birkner about his life and time as a professor of Political Science at Gettysburg College. He discusses his childhood, his experiences during World War II and the Korean War in the Counterintelligence Corps, and finally his memories of the faculty, administrators, and students at Gettysburg. Length of Interview: 94 minutes Collection Note: This oral history was selected from the Oral History Collection maintained by Special Collections & College Archives. Transcripts are available for browsing in the Special Collections Reading Room, 4th floor, Musselman Library. GettDigital contains the complete listing of oral histories done from 1978 to the present. To view this list and to access selected digital versions please visit -- http://gettysburg.cdmhost.com/cdm/landingpage/collection/p16274coll

Machine learning research 1989-90

Multifunctional knowledge bases offer a significant advance in artificial intelligence because they can support numerous expert tasks within a domain. As a result they amortize the costs of building a knowledge base over multiple expert systems and they reduce the brittleness of each system. Due to the inevitable size and complexity of multifunctional knowledge bases, their construction and maintenance require knowledge engineering and acquisition tools that can automatically identify interactions between new and existing knowledge. Furthermore, their use requires software for accessing those portions of the knowledge base that coherently answer questions. Considerable progress was made in developing software for building and accessing multifunctional knowledge bases. A language was developed for representing knowledge, along with software tools for editing and displaying knowledge, a machine learning program for integrating new information into existing knowledge, and a question answering system for accessing the knowledge base

Oceanic microstructure observed near Bermuda using a towed sensor

Submitted in partial fulfillment of the requirements for the Degree of Doctor of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution June 1973Many hypotheses have been advanced to explain the formation of mixed layers in the ocean; the salt finger type of double-diffusive convection, in particular, has received much attention. Because of their uniquely ordered nature, salt fingers should be readily identifiable in the deep thermocline, if in fact they exist there. A relatively limited experiment could thus produce a definitive evaluation of the importance of salt finger convection in the ocean, at least in certain places and at certain times. Such an evaluation, which would help to direct future work on oceanic microstructure, was the primary objective of this thesis. A secondary and more general objective was to measure the intermittency of mixing events in the ocean; and also, by measuring the RMS gradients of temperature and salinity in such events, to evaluate directly the intensity of vertical mixing. Since a horizontally-towed sensor is essential if salt fingers are to be observed directly, a new instrument has been designed and built which can resolve fractional-centimeter structures of electrical conductivity while being towed at speeds of several knots. The design of this instrument is described in this report. The instrument has been towed in deep water near Bermuda. It is believed that salt fingers were observed in the main thermocline on several occasions; but they were so rare as to be negligible in the total vertical mixing. An analysis of one such possible salt finger event is presented. Numerous other small-scale fluctuations of electrical conductivity were observed, which can be reconciled only with a turbulent model. Intermittency statistics for these events are presented. The eddy diffusivity has been calculated from the data to be approxima tely 0.075 cm2/sec.National Science, Foundation has supported this work under grants number NSF GA - 21172 and NSF GA - 30729 X

Trends in aeropropulsion research and their impact on engineering education

This presentation is concerned with the trends in aeropropulsion both in the U.S. and abroad and the impact of these trends on the educational process in our universities. In this paper, we shall outline the new directions for research which may be of interest to educators in the aeropropulsion field. Awareness of new emphases, such as emission reductions, noise control, maneuverability, speed, etc., will have a great impact on engineering educators responsible for restructuring courses in propulsion. The information presented herein will also provide some background material for possible consideration in the future development of propulsion courses. In describing aeropropulsion, we are concerned primarily with air-breathing propulsion; however many observations apply equally as well to rocket engine systems. Aeropropulsion research needs are primarily motivated by technologies required for advanced vehicle systems and frequently driven by external requirements such as economic competitiveness, environmental concern and national security. In this presentation, vehicle based research is first described, followed by a discussion of discipline and multidiscipline research necessary to implement the vehicle-focused programs. The importance of collaboration in research and the training of future researchers concludes this presentation

Lessons from a laissez-faire payments system: the Suffolk Banking System (1825-58)

A classic example of a privately created interbank payments system was operated by the Suffolk Bank of New England (1825–58). Known as the Suffolk Banking System, it was the nation’s first regionwide net-clearing system for bank notes. While it operated, notes of all New England banks circulated at par throughout the region. Some have concluded from this experience that unfettered competition in the provision of payments services can produce an efficient payments system. But another look at the history of the Suffolk Banking System questions this conclusion. The Suffolk Bank earned extraordinary profits, and note-clearing may have been a natural monopoly. There is no consensus in the literature about whether unfettered operation of markets with natural monopolies produces an efficient allocation of resources. ; Reprinted in Quarterly Review, Fall 2002 (v. 26. no. 4)Suffolk Banking System ; Payment systems

The Suffolk Bank and the Panic of 1837

The Suffolk Bank in Boston is well known as having been the clearinghouse for virtually all the banknotes that circulated in New England between 1836 and 1858. An examination of 19th century bank balance sheets shows that during and after the U.S. banking Panic of 1837, this private commercial bank also provided some services that today are provided by central banks. These include lending reserves to other banks (providing a discount window) and keeping the payments system operating. Because of Suffolk's activities, banks in New England fared better than banks elsewhere during the Panic of 1837. And after the panic, when much of the United States suffered a prolonged economic slowdown, New England fared better than the rest of the country, at least partly because of Suffolk’s central bank-like activities.Bank notes ; Banks and banking - History

In order to form a more perfect monetary union

Why did states agree to a U.S. Constitution that prohibits them from issuing their own money? This article argues that two common answers to this question—a fear of inflation and a desire to control what money qualifies as legal tender—do not fit the facts. The article proposes a better answer: a desire to form a viable monetary union that both eliminates the variability of exchange rates between various forms of money and avoids the seigniorage problem that otherwise occurs in a fixed exchange rate system. Supporting evidence is offered from three periods of U.S. history: the colonial period (1690–1776), the Revolutionary War (1776–83), and the Confederation period (1783–89). This article is adapted from a chapter prepared for a forthcoming book, Varieties of Monetary Reforms: Lessons and Experiences on the Road to Monetary Union, edited by Pierre Siklos, to be published by Kluwer Academic Publishers.Banks and banking - History ; Money theory

Tuberculin diagnostic reactions: 654 cases comprising the conjunctival, cutaneous and percutaneous tests

History of Tuberculin. || Preparation of Koch's Old Tuberculin. || Characters of Tuberculin. || The Evolution of Tuberculin as a Diagnostic Agent.THE CONJUNCTIVAL TEST. || Method of Application || The Reaction. || Time of Reaction. || Nature of the Reaction. || Other Results Obtained, || The Value of the Conjunctival Reaction. || An Unsafe Test. || Reliability. || Conclusions.THE CUTANEOUS REACTION || The tuberculin employed || Application of the test. || The Reaction. || Abnormal Reactions. || Nature of reaction. || Results obtained with the cutaneous reaction. || Value of the test. || ConclusionsTHE PERCUTANEOUS REACTION || Tuberculin Ointment. || Application of the Test. || The Reaction. || Abnormal Reactions. || Value of the Test. || ConclusionsCASES OF CONJUNCTIVAL REACTION. || CASES OF THE CUTANEOUS TEST || CASES OF PERCUTANEOUS TEST |