Fiske Steps and Abrikosov Vortices in Josephson Tunnel Junctions

We present a theoretical and experimental study of the Fiske resonances in the current-voltage characteristics of "small" Josephson junctions with randomly distributed misaligned Abrikosov vortices. We obtained that in the presence of Abrikosov vortices the resonant interaction of electromagnetic waves, excited inside a junction, with the ac Josephson current manifests itself by Fiske steps in a current-voltage characteristics even in the absence of external magnetic field. We found that the voltage positions of the Fiske steps are determined by a junction size, but the Fiske step magnitudes depend both on the density of trapped Abrikosov vortices and on their misalignment parameter. We measured the magnetic field dependence of both the amplitude of the first Fiske step and the Josephson critical current of low-dissipative small $Nb$ based Josephson tunnel junctions with artificially introduced Abrikosov vortices. A strong decay of the Josephson critical current and a weak non-monotonic decrease of the first Fiske step amplitude on the Abrikosov vortex density were observed. The experimentally observed dependencies are well described by the developed theory.Comment: 21 pages, 7 figures, submitted to Physical Review

Phase Locking Between Fiske and Flux-Flow Modes in Coupled Sine-Gordon Systems

We investigate nonlinear resonant modes in coupled sine-Gordon systems with open boundary conditions. The system models coupled Josephson junctions with boundary conditions representing the situation where an external magnetic field is applied. The so-called Fiske modes are found to exist in phase-locked states where the equivalent voltages across the individual coupled Josephson junctions are either identical or identical with opposite signs. The analysis covers all Fiske modes including the flux-flow region. We present a comprehensive comparison between results on analytical treatment and direct numerical simulations of the coupled field equations

PANEL DISCUSSION: THE FEDERAL PROSECUTOR\u27S ROLE IN THE REGULATORY PROCESS

MODERATOR: CharlesM. Carberry PANELISTS: Honorable John S. Martin, Jr., Robert B. Fiske, Jr., Mary Ellen Krist, Ronald K. Noble, Honorable Jed S. Rakoff, Mary Spearin

REPRESENTASI PEKERJA BURUH PEREMPUAN DALAM FILM KISAH 3 TITIK (Analisis Semiotika John Fiske)

Perempuan dalam Film Kisah 3 Titik (Analisis Semotika John Fiske). Tujuan penelitian ini adalah untuk mengetahui bagaimana Representasi pekerja buruh perempuan dalam Film Kisah 3 Titik melalui Analisis Semiotika John Fiske.Teori yang digunakan dalam penelitian ini adalah Teori Analisis Semiotika John Fiske. Objek dari penelitian iniadalah Film Kisah 3 Titik. Penelitian ini menggunakan teknik analisis semiotika John Fiske dimana dalam analisis semiotika John fiske kita akan mengetahui Level realita, representasi dan ideologi yang terdapat dalam Film Kisah 3 Titik. Hasil dari penelitian ini adalah penggambaran realita kehidupan para pekerja buruh perempuan di duniapekerjaan

Features

Robert B. Fiske Jr.., \u2755, and the Fiske Fellows benefits government service; From Russia with...Law: Third-year law student writes pioneering study of the Russian Federation

Error and symmetry analysis of Misner's algorithm for spherical harmonic decomposition on a cubic grid

Computing spherical harmonic decompositions is a ubiquitous technique that arises in a wide variety of disciplines and a large number of scientific codes. Because spherical harmonics are defined by integrals over spheres, however, one must perform some sort of interpolation in order to compute them when data is stored on a cubic lattice. Misner (2004, Class. Quant. Grav., 21, S243) presented a novel algorithm for computing the spherical harmonic components of data represented on a cubic grid, which has been found in real applications to be both efficient and robust to the presence of mesh refinement boundaries. At the same time, however, practical applications of the algorithm require knowledge of how the truncation errors of the algorithm depend on the various parameters in the algorithm. Based on analytic arguments and experience using the algorithm in real numerical simulations, I explore these dependencies and provide a rule of thumb for choosing the parameters based on the truncation errors of the underlying data. I also demonstrate that symmetries in the spherical harmonics themselves allow for an even more efficient implementation of the algorithm than was suggested by Misner in his original paper.Comment: 10 pages, 3 tables, 1 figure. Version 2 has a broader introduction, and includes additional information on choosing parameter

Dominasi Kuasa Kapitalis terhadap Buruh dalam Plot Film Sorry to Bother You Ditinjau melalui Semiotika John Fiske

Penelitian berjudul “Dominasi Kuasa Kapitalis Terhadap Buruh dalam Plot pada Film ‘Sorry to Bother You’ Ditinjau Melalui Semiotika John Fiske” ini bertujuan untuk mencari dominasi kuasa kapitalis terhadap buruh melalui plot dalam film dengan menggunakan three codes of television sebagai bagian dari semiotika milik John Fiske. Penelitian ini merupakan penelitian kualitatif dengan metode deskriptif kualitatif, yakni dengan melakukan pencarian dominasi kuasa oleh kaum kapitalis kepada para buruh pada plot dalam film ‘Sorry to Bother You’. Unit analisis yang akan digunakan adalah scene. Data hasil penelitian kemudian diolah dengan analisis kualitatif, kemudian dikodekan dengan teori three level of social codes John Fiske, sehingga dapat ditarik beberapa kesimpulan. Berdasarkan hasil penelitian, dapat disimpulkan bahwa plot dalam film ‘Sorry to Bother You’ menunjukkan adanya dominasi kuasa oleh perusahaan RegalView dan WorryFree sebagai kaum kapitalis. Teori three codes of television milik John Fiske mengungkapnya melalui tahapan realitas, representasi, dan ideologi.