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  • Author(s):
    Thomas A. Stapleford
    Abstract:

    This essay examines the evolution of data-collection practices in American expenditure surveys over much of the twentieth century. Economists conducting expenditure surveys faced one fundamental concern: their success hinged upon the cooperation of interviewees (typically housewives) and the reliability of their testimony. Investigators recognized that both dependencies posed serious problems, and they struggled to devise effective solutions. I argue that over the course of the twentieth cent…

    Date Published:
    2012
  • Author(s):
    Thomas A. Stapleford
    Abstract:

    Prior to the 1960s most American economists rejected hedonic techniques as a solution to the problem of quality change in price indexes. I argue that behind that judgment lay a deeper conceptual divide over how best to define and assess product quality: through expert testing or through market price differentials. Most American economists working on price indexes at the time had ties to the U.S. consumer movement, which emphasized consumer ignorance and promoted expert analysis as the only re…

    Date Published:
    2011
  • Author(s):
    Thomas A. Stapleford
    Abstract:

    This essay explores the history of the 1935-1936 Study of Consumer Purchases, an extraordinary national survey of family incomes and expenditures undertaken by the federal government during the New Deal. Created and administered primarily left-leaning economists, the project was an order of magnitude larger and more complex than any previous expenditure survey and was intended to aid and justify state-led economic planning. Yet it failed to be an effective help to New Deal reformers, proving …

    Date Published:
    2007-09
  • Author(s):
    Daniel Bates, Andrew Sommese, Jonathan Hauenstein
    Abstract:

    Numerical algebraic geometry is the area devoted to the solution and manipulation of polynomial systems by numerical methods, which are mainly based on continuation. Due to the extreme intrinsic parallelism of continuation, polynomial systems may be successfully dealt with that are much larger than is possible with other methods. Singular solutions require special numerical methods called endgames, and the endgames currently used do not take advantage of parallelism. This article gives an ove…

  • Author(s):
    Charles Wampler II, Daniel Bates, Andrew Sommese, Jonathan Hauenstein
    Abstract:

    Dedicated to our collaborator, mentor, and friend, Andrew Sommese, by Bates, Hauenstein, and Wampler on the occasion of his sixtieth birthday.

    When numerically tracking implicitly-defined paths, such as is required for homotopy continuation methods, efficiency and reliability are enhanced by using adaptive stepsize and adaptive multiprecision methods. Both efficiency and reliability can be further improved by adapting precision and stepsize simultaneously. This paper presents a strategy fo…

  • Author(s):
    Charles Wampler, Andrew Sommese, Jonathan Hauenstein
    Abstract:

    Though numerical methods to find all the isolated solutions of nonlinear systems of multivariate polynomials go back 30 years, it is only over the last decade that numerical methods have been devised for the computation and manipulation of algebraic sets coming from polynomial systems over the complex numbers. Collectively, these algorithms and the underlying theory have come to be known as numerical algebraic geometry. Several software packages are capable of carrying out some of the operati…

  • Author(s):
    Daniel Bates, Andrew Sommese, Jonathan Hauenstein
    Abstract:

    Path tracking is the fundamental computational tool in homotopy continuation and is therefore key in most algorithms in the emerging field of numerical algebraic geometry. Though the basic notions of predictor-corrector methods have been known for years, there is still much to be considered, particularly in the specialized algebraic setting of solving polynomial systems. In this article, the effects of the choice of predictor method on the performance of a tracker is analyzed, and details for…

  • Author(s):
    Mark Dehmlow
    Abstract:

    In December of 2014, the University of Notre Dame’s Office of Information Technology (OIT) announced its “Cloud First” strategy. The strategic goal of the initiative is to espouse a technology implementation strategy that lays out a technology adoption strategy with the following order of preferences: 1. Use software provided and hosted by vendors in the cloud, 2. Adopt cloud-based data-centers for implementing what previously had been on-premise solutions, and 3. Reduce local implementations…

  • Author(s):
    Robert Kusmer
    Abstract:

    Notre Dame’s German language and literature librarian Robert Kusmer describes his visit to the 2014 Basel and Vienna book fairs and the trip’s significance to his work in building the German literature collections. This article is also published in the WESS Newsletter 38:2 (Spring 2015).

  • Author(s):
    Robert Kusmer
    Abstract:

    Notre Dame’s German language and literature librarian Robert Kusmer describes his March 2004 trip to the Leipzig Book Fair as a recipient of the Nedbook Northwest Europe Award and its value in developing the German literature collections in Hesburgh Library. This article appeared in the WESS Newsletter 28:1 (Fall 2004)

  • Author(s):
    Robert Kusmer
    Abstract:

    Notre Dame’s German language and literature librarian Robert Kusmer describes his November 2002 trip with colleagues to four major German cities for the purpose of touring prominent libraries, publishing houses and other cultural institutions. Co-sponsored by the Goethe Institut-New York and Bibliothek und Information International, under the auspices of the Association of College and Research Libraries, West European Studies Section, the trip furthered his understanding of the commonali…

  • Author(s):
    David Lloyd
    Abstract:

    The sudden, if predictable, transformation of Ireland from its brief moment as an island of immigrants back into what for so long it always was, a nation of emigrants, demands the re-interrogation of a term that for a brief time came to seem a natural way to address Ireland’s global migrations. The application of the term diaspora to people of Irish descent living outside Ireland is, after all, of relatively recent date and replaces a term that has been quite resonant in the Irish vocabular…

    Date Published:
    2013-04