29,390 research outputs found
Francis Kaplan, Marx antisémite ?
No full textTollet Daniel. Francis Kaplan, Marx antisémite ?. In: Revue d’histoire moderne et contemporaine, tome 39 N°4, Octobre-décembre 1992. pp. 693-694
Kaplan-Meier graph.
No full textKaplan-Meier graph visualizing the proportion of injury-free runners as a function of follow-up time. The results revealed 32% [95% CI: 26; 37] of the runners sustained injury over the 24 weeks.</p
Report on Meteorological Research March 1, 1935 (m-1)
No full textThe object of the report was to elucidate in detail the various features of the research program in meteorology being carried on at the Daniel Guggenheim Airship Institute in Akron, Ohio. Mr. L. J. Fangman, of the U.S. Weather Bureau, was collaborating with the author in carrying out work such as a study of autographic records of the various meteorological elements during frontal passages with a view to the possible prediction of the intensity of the accompanying disturbance as it may affect the operation of aircraft and a study of atmospheric gustiness with a view to finding the dependence between frequency end amplitude of velocity fluctuations and the vertical temperature and velocity gradients
(Fourth) Report on Meteorological Activities at the DGAI (8-1-36)(Weather Bureau Copy)
No full textThis report is on the investigations of frontal phenomena at the Daniel Guggenheim Airship Institute in Akron, Ohio from January 1, 1935 through August 1, 1936. The investigation was carried out with the cooperation of the U.S. Bureau of Aeronautics, the U.S. Weather Bureau, the California Institute of Technology, and the Guggenheim Airship Institute. Mr. R.C. Robinson of the Weather Bureau cooperated with the author in carrying out the investigation. The object of the investigation was to determine the intensity of the atmospheric disturbances (i.e. rapidity of wind shift and gustiness) accompanying the passage of cold fronts, along with a study of the characteristics of the air masses involved and other features which might affect the intensity of the disturbance. The report treated thirty cold fronts which passed the station during 1935 to 1936
Archives and Images as Repositories of Time, Language, and Forms from the Past: A Conversation with Daniel Eisenberg
No full text
Multiplicative preprojective algebras are 2-Calabi-Yau
No full textWe prove that multiplicative preprojective algebras, defined by
Crawley-Boevey and Shaw, are 2-Calabi-Yau algebras, in the case of quivers
containing unoriented cycles. If the quiver is not itself a cycle, we show that
the center is trivial, and hence the Calabi-Yau structure is unique. If the
quiver is a cycle, we show that the algebra is a non-commutative crepant
resolution of its center, the ring of functions on the corresponding
multiplicative quiver variety with a type A surface singularity. We also prove
that the dg versions of these algebras (arising as certain Fukaya categories)
are formal. We conjecture that the same properties hold for all non-Dynkin
quivers, with respect to any extended Dynkin subquiver (note that the cycle is
the type A case). Finally, we prove that multiplicative quiver varieties-for
all quivers-are formally locally isomorphic to ordinary quiver varieties. In
particular, they are all symplectic singularities (which implies they are
normal and have rational Gorenstein singularities). This includes character
varieties of Riemann surfaces with punctures and monodromy conditions. We
deduce this from a more general statement about 2-Calabi--Yau algebras
(following Bocklandt, Galluzzi, and Vaccarino).Comment: 48 pages, Remarks 1.6 and 4.7 adde
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