Browsing by Subject "maps"

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AMS :: ATX November 2011 Blog Archive
(2011-11) Department of American Studies
AMS :: ATX is a blog dedicated to representing the many activities and interests of the department of American Studies at The University of Texas at Austin. Together with the department’s Twitter feed, this blog exists to serve the AMS and Austin communities by acting as a hub for up-to-date information on events and opportunities at UT and beyond. This archive includes the following blog posts: Faculty Research: Randy Lewis' "The Compassion Manifesto" (November 1, 2011); Grad Research: A Map of Classic Arcades (November 3, 2011); Faculty Research: Janet Davis on the Circus (November 4, 2011); Undergrad Research: On Jack Kerouac and Sports (November 8, 2011); 5 Questions with Dr. Janet Davis (November 10, 2011); Watch This: Dr. Julia Mickenberg on Book TV (November 15, 2011); Read this: "Main Currents," American Studies Fall 2011 Newsletter (November 17, 2011); Watch This: Dr. Elizabeth Engelhardt on Fox's Good Day Austin (November 22, 2011).
AMS :: ATX September 2011 Blog Archive
(2011-09) Department of American Studies
AMS :: ATX is a blog dedicated to representing the many activities and interests of the department of American Studies at The University of Texas at Austin. Together with the department’s Twitter feed, this blog exists to serve the AMS and Austin communities by acting as a hub for up-to-date information on events and opportunities at UT and beyond. This archive includes the following blog posts: 12 Twitterers American Studies Folks Should Follow (September 1, 2011); Faculty Research: Radical Children's Literature Now! (September 7, 2011); 5 Questions with Department Chair Steven Hoelscher (September 8, 2011); 5 Maps for the Visually Inclined (September 14, 2011); Watch This: Bodega Down Bronx (September 16, 2011); AMS Events this Week (September 20, 2011); 5 Questions wiht Dr. Randy Lewis (September 21, 2011); Grad Research: War Documentaries and [Un]realism (September 27, 2011).
Austin Restricted: Progressivism, Zoning, Private Racial Covenants, and the Making of a Segregated City
(2012) Tretter, Eliot M.
In many respects, the story of racial segregation in Austin, Texas, is not unique. It is the story of nearly every major city in the United States, especially those in the South and all major cities in Texas (Massey and Denton 1993 pgs. 17-58; Wade 1971). In the latter portion of the 19th century, non-whites, especially African-Americans (but not Hispanics), could be found in most neighborhoods in Austin. However, by 1940, African-Americans and Hispanics were overwhelmingly spatially segregated in an isolated section of the city known as East Austin. As Sara Lucy observed in 1939, “The city’s Negro population is not large compared to many other populous Texas cites, nor is its Mexican population. Both races, through natural choice, are largely segregated in their sections of the city” (Lucy 1938). The segregation of non-whites was far from voluntary, as I will show, and for more than 60 years, until about the 2000 census, the patterns of race and housing that had been locked in during the early period of the 20th century remained largely unchanged; only recently have these geographies become undone by private urban revitalization efforts broadly classified as gentrification (Tretter Forthcoming).
Boundaries of Siegel Disks: Numerical Studies of their Dynamics and Regularity
(2008-09) de la Llave, Rafael; Petrov, Nikola P.; de la Llave, Rafael
Siegel disks are domains around fixed points of holomorphic maps in which the maps are locally linearizable (i.e., become a rotation under an appropriate change of coordinates which is analytic in a neighborhood of the origin). The dynamical behavior of the iterates of the map on the boundary of the Siegel disk exhibits strong scaling properties which have been intensively studied in the physical and mathematical literature. In the cases we study, the boundary of the Siegel disk is a Jordan curve containing a critical point of the map (we consider critical maps of different orders), and there exists a natural parametrization which transforms the dynamics on the boundary into a rotation. We compute numerically this parameterization and use methods of harmonic analysis to compute the global Holder regularity of the parametrization for different maps and rotation numbers. We obtain that the regularity of the boundaries and the scaling exponents are universal numbers in the sense of renormalization theory (i.e., they do not depend on the map when the map ranges in an open set), and only depend on the order of the critical point of the map in the boundary of the Siegel disk and the tail of the continued function expansion of the rotation number. We also discuss some possible relations between the regularity of the parametrization of the boundaries and the corresponding scaling exponents. (C) 2008 American Institute of Physics.
Directions for Plotting Earthquyake Beachballs in ArcGIS and Matlab
(Institute for Geophysics, 2018) Norton, Ian O.
Effective transport barriers in nontwist systems
(2012-09) Szezech, J. D.; Caldas, I. L.; Lopes, S. R.; Morrison, P. J.; Viana, R. L.; Morrison, P. J.
In fluids and plasmas with zonal flow reversed shear, a peculiar kind of transport barrier appears in the shearless region, one that is associated with a proper route of transition to chaos. These barriers have been identified in symplectic nontwist maps that model such zonal flows. We use the so-called standard nontwist map, a paradigmatic example of nontwist systems, to analyze the parameter dependence of the transport through a broken shearless barrier. On varying a proper control parameter, we identify the onset of structures with high stickiness that give rise to an effective barrier near the broken shearless curve. Moreover, we show how these stickiness structures, and the concomitant transport reduction in the shearless region, are determined by a homoclinic tangle of the remaining dominant twin island chains. We use the finite-time rotation number, a recently proposed diagnostic, to identify transport barriers that separate different regions of stickiness. The identified barriers are comparable to those obtained by using finite-time Lyapunov exponents.
Letter from Sinclair Hood to William C. Brice, March 18, 1976
(1976-03-18) Hood, Sinclair
Letter to B.Coleman Renick from H.B. Stenzel on 1932-03-14
(1932-03-14) Stenzel, Henryk B.
Letter to C.L. Moody from H.B. Stenzel on 1938-04-20
(1938-04-20) Stenzel, H.B.
Letter to Chester R. Longwell from H.B. Stenzel on 1939-05-22
(1939-05-22) Stenzel, H.B.
Letter to E.H. Sellards from B.Coleman Renick on 1931-01-15
(1931-01-15) Renick, B.Coleman
Letter to E.H. Sellards from H.B. Stenzel on 1944-04-26
(1944-04-26) Stenzel, Henryk B.
Letter to Elvin M. Hurlbut, Jr. from H.B. Stenzel on 1944-08-28
(1944-08-28) Stenzel, Henryk B.
Letter to F.S. MacNeil from H.B. Stenzel on 1947-09-29
(1947-09-29) Stenzel, H.B.
Letter to Fritz Mueller from H.B. Stenzel on 1937-09-02
(1937-09-02) Stenzel, H.B.
Letter to G.H. White from H.B. Stenzel on 1937-07-21
(1937-07-21) Stenzel, Henryk B.
Letter to Grover E. Murray from H.B. Stenzel on 1953-05-15
(1953-05-15) Stenzel, H.B.
Letter to H. B. Stenzel from M. N. Broughton on 1938-06-23
(1938-06-23) Broughton, M. N.
Letter to H.B. Stenzel from A.I. Levorsen on 1940-09-16
(1940-09-16) Levorsen, A.I.
Letter to H.B. Stenzel from Bill Sharp on 1950-10-25
(1950-10-25) Sharp, Bill