Browsing by Subject "University of Michigan"

Now showing 1 - 5 of 5
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    Biogeochemical patterns and processes in buoyant, deep-sea hydrothermal plumes
    (2011-08-11) Wendt, Kathleen
    Along the global mid-ocean ridge, sub-seafloor hydrothermal circulation results in the exchange of heat and chemical species between seawater and the ocean crust. The resulting thermally and geochemically altered fluids are vented at the seafloor. The mixing of cold, oxic deep-ocean waters with hydrothermal fluids creates plumes with physically and chemically dynamic features. Hydrothermal plumes represent a globally distributed interface where marine hydrothermal circulation exerts its biogeochemical influence on elemental budgets of ocean basins. The goal of the present study is to describe the microbiological niches created by physical and geochemical gradients in plumes. One of our central hypotheses is that microorganisms respond to and alter the geochemistry of hydrothermal plumes. To achieve this goal and test our hypothesis, a field study was undertaken at the Eastern Lau Spreading Center (ELSC). While multiple vent sites along the ELSC are included in the larger study, here we report on an integrated, biogeochemical investigation of a single buoyant plume within ABE vent field. A series of replicate sample sets were collected by in situ filtration at 0.5m, 40m, 200m within a buoyant plume using the ROV JASON. Above plume background and near bottom background sample sets were also collected. Hydrothermal plume particles in sample replicates or splits have been queried for bulk geochemistry, particle-by-particle mineralogy, and microbial community composition. These three data streams are being evaluated individually to characterize the geochemical and microbiological changes throughout the plume with respect to above and below plume backgrounds. In addition, an iterative and integrated analysis is being used to compare: (1) calculated mineralogy to direct measurements; and (2) predicted energy yields from chemoautotrophy to observed microbial composition.
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    Burroughs B 5000 Conference
    (Charles Babbage Institute, 1985-09-06) Waychoff, Richard; Turner, Lloyd; Rosin, Robert F.; Pearson, Ralph W.; Oliphint, G. Clark; MacKenzie, F. Brad; MacDonald, Ray W.; MacDonald, Duncan N.; Lonergan, William D.; Kreuder, Norman L.; King, Paul D.; Hootman, Joseph T.; Hauck, Erwin A.; Hale, John E.; Galler, Bernard A., 1928-; Ford, James; Eppert, Ray R., 1902-; Dent, Benjamin A.; Dahm, David M.; Creech, Bobby A.; Collins, George A.; Berce, Henri; Barton, Robert S.
    The Burroughs 5000 computer series is discussed by individuals responsible for its development and marketing from 1957 through the 1960s in a conference sponsored by AFIPS and Burroughs Corporation. In the first session the technical aspects of the B 5000 and 5500 are discussed by a group of managers, engineers, and consultants. Topics include: the state of the industry in the late 1950s; the 5000's predecessors, particularly the ElectroData 101 and 201, B 205, and B 220; factors influencing the decision to produce the B 5000; reasons for designing the machine for ALGOL rather than FORTRAN and the effect of this decision on the computer's development and sales. The group reviews the MCP operating system, PERM, Polish notation, descriptors, stacks, the BALGOL compiler, and other innovations of the computer. In the second session, the same group discusses the development of the B 5000 into a product, including the effect of the administrative organization on the project; the relations between hardware and software engineers; the interaction of project personnel and upper-level management, field marketing, and customers; the COBOL processor, the head protract disk system; the operating system; ALGOL; and documentation of the computer. In the third session managers, sales personnel, and customers of the B 5000 discuss Burroughs' product line before the 200 and 5000 series computers; sales training and market reaction to the B 5000; acceptance of B 5000s at Ohio Oil Company and Stanford University; its rejection by the University of Michigan; reasons why the B 5000 was not marketed overseas; and Burroughs' presidents Raymond Eppert and Ray MacDonald. Technical session participants included: Robert S. Barton, Bobby A. Creech, David M. Dahm, Benjamin A. Dent, Bernard A. Galler, John E. S. Hale, Erwin A. Hauck, Paul D. King, Norman Kreuder, William Lonergan, Duncan MacDonald, F. Brad MacKenzie, G. Clark Oliphint, Robert F. Rosin, Lloyd Turner, and Richard Waychoff. Marketing session participants included: Henri Berce, George A. Collins, James Ford, Bernard A. Galler, John E. S. Hale, Joseph T. Hootman, Paul D. King, F. Brad MacKenzie, Ralph W. Pearson, and Robert F. Rosin.
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    Oral history interview with Bernard A. Galler
    (Charles Babbage Institute, 1991-08) Galler, Bernard A., 1928-
    In this wide-ranging interview, Galler describes the development of computer science at the University of Michigan from the 1950s through the 1980s and discusses his own work in computer science. Prominent subjects in Galler's description of his work at Michigan include: his arrival and classes with John Carr, research use of International Business Machines (IBM) and later Amdahl mainframe computers, the establishment of the Statistical Laboratory in the Mathematics Dept., the origin of the computer science curriculum and the Computer Science Dept. in the 1950s, interactions with Massachusetts Institute of Technology and IBM about timesharing in the 1960s, the development of the Michigan Algorithm Decoder, and the founding of the MERIT network. Galler also discusses Michigan's relationship with ARPANET, CSNET, and BITNET. He describes the atmosphere on campus in the 1960s and early 1970s and his various administrative roles at the university. Galler discusses his involvement with the Association for Computing Machinery, the American Federation of Information Processing Societies, the founding of the Charles Babbage Institute, and his work with the Annals of the History of Computing. He describes his consultative work with Israel and his consulting practice in general, his work as an expert witness, and his interaction with the Patent Office on issues surrounding the patenting of software and his role in the establishment of the Software Patent Institute.
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    Oral history interview with Fran Chessler
    (Charles Babbage Institute, 2016-01-14) Chessler, Fran
    Fran Chessler attended the University of Michigan as a General Motors Scholar, majoring in mathematics and psychology and graduating in 1970. She went to work at Bell Labs Naperville, working on assembly-language programming to collect call data for 1ESS. She discusses the gender biases in the STA and MTS hiring grades. Promoted to MTS she did a master’s at Northwestern University. She discusses affirmative action and the distinct culture of Bell Labs Indian Hill/Naperville. In part owing to connections from the Men and Women in the Work Environment workshops, she moved to the computer center department doing systems programming on IBM computers. She describes an effective management style by her supervisor, Dana Dunn. She moved into a department chief position at Western Electric’s network system division, and compares affirmative action there to Bell Labs. In the mid-1980s she experienced unsettled times in AT&T computer systems, then returned to Bell Labs (all in Chicago) as a supervisor. In moving to the business side as senior product manager, she completed an executive MBA at Northwestern University; and retired from AT&T in 2001. This material is based on work funded by the Alfred P. Sloan Foundation award B2014-07 “Tripling Women’s Participation in Computing (1965-1985).”
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    Oral history interview with Jo Anne Miller
    (Charles Babbage Institute, 2016-01-04) Miller, Jo Anne
    Jo Anne Miller graduated in December 1967 with a degree in mathematics from the University of Michigan, where she had experience with computer programming. She took a job in Boston at GTE Sylvania working on military projects, then moved to St. Louis (when her husband was drafted) and ran a computer center at Parks College of St. Louis University, then did research at University of Colorado where she worked on a Master’s degree. She was recruited (a second time) by Bell Labs and began work at Bell Labs Naperville in March 1976, as a Member of Technical Staff working in software restructuring for electronic switching systems. She describes her experience with affirmative action, the women’s movement, and work culture and career expectations at Bell Labs. In 1978 she became a technical supervisor for 5ESS software development, relating short-term rotational experiences with installing 5ESS in California and in southern Illinois. She describes challenges advocating for part-time managerial positions, child care, and suggests there were changes in the support for affirmative action in the 1980s. Working for the Western Electric organization in the mid-1980s, she completed an executive MBA at the University of Chicago. After leaving Bell she became involved with MentorNet in 2003 and in investing in women-backed businesses. This material is based on work funded by the Alfred P. Sloan Foundation award B2014-07 “Tripling Women’s Participation in Computing (1965-1985).”