Electronic amplifier with power supply switching Patent

Increasing power conversion efficiency of electronic amplifiers by power supply switchin

Statement of Andrew M. Kramer on Behalf of the Management Lawyers Working Group Before the Commission on the Future of Worker-Management Relations

Testimony_Kramer_090894.pdf: 276 downloads, before Oct. 1, 2020

One Big Thing: Suffering as the Path to New Life in Crime and Punishment

After spending a whole semester reading and thinking about Dostoevsky, the main thing that has struck me about him is his treatment of the theme of suffering. Despite, and even through, his extremely complicated characters and events, he nevertheless focuses his novels, particularly Crime and Punishment, on presenting a nuanced yet unified picture of suffering. After a brief analysis of several of the relevant characters and plot points, his thoughts on what suffering does to and for the individual will be presented. In contrast to our culture’s almost idolization of suffering as an experience which gives one instant respect, authority, and a platform, Dostoevsky’s perspective is honest, informed, pragmatic, and thoroughly Christian

NNLO contributions to jet photoproduction and determination of \alpha_s

We present the first calculation of inclusive jet photoproduction with next-to-next-to-leading order (NNLO) contributions, obtained from a unified threshold resummation formalism. The leading coefficients for direct photoproduction are computed analytically. Together with the coefficients pertinent to parton-parton scattering, they are shown to agree with those appearing in our full next-to-leading order calculations. For hadron-hadron scattering, numerical agreement is found with a previous calculation of jet production at the Tevatron. We show that the direct and resolved NNLO contributions considerably improve the description of final ZEUS data on jet photoproduction and that the error on the determination of the strong coupling constant is significantly reduced.Comment: 4 pages, 3 figure

Surface structure of i-Al(68)Pd(23)Mn(9): An analysis based on the T*(2F) tiling decorated by Bergman polytopes

A Fibonacci-like terrace structure along a 5fold axis of i-Al(68)Pd(23)Mn(9) monograins has been observed by T.M. Schaub et al. with scanning tunnelling microscopy (STM). In the planes of the terraces they see patterns of dark pentagonal holes. These holes are well oriented both within and among terraces. In one of 11 planes Schaub et al. obtain the autocorrelation function of the hole pattern. We interpret these experimental findings in terms of the Katz-Gratias-de Boisseu-Elser model. Following the suggestion of Elser that the Bergman clusters are the dominant motive of this model, we decorate the tiling T*(2F) by the Bergman polytopes only. The tiling T*(2F) allows us to use the powerful tools of the projection techniques. The Bergman polytopes can be easily replaced by the Mackay polytopes as the decoration objects. We derive a picture of ``geared'' layers of Bergman polytopes from the projection techniques as well as from a huge patch. Under the assumption that no surface reconstruction takes place, this picture explains the Fibonacci-sequence of the step heights as well as the related structure in the terraces qualitatively and to certain extent even quantitatively. Furthermore, this layer-picture requires that the polytopes are cut in order to allow for the observed step heights. We conclude that Bergman or Mackay clusters have to be considered as geometric building blocks of the i-AlPdMn structure rather than as energetically stable entities

Survival probability in diffractive dijet photoproduction

We confront the latest H1 and ZEUS data on diffractive dijet photoproduction with next-to-leading order QCD predictions in order to determine whether a rapidity gap survival probability of less than one is supported by the data. We find evidence for this hypothesis when assuming global factorization breaking for both the direct and resolved photon contributions, in which case the survival probability would have to be E_T^jet-dependent, and for the resolved or in addition the related direct initial-state singular contribution only, where it would be independent of E_T^jet.Comment: 8 pages, 7 figures, to appear in the proceedings of the 2008 CERN-DESY workshop on "HERA and the LHC