Ghibertis Hommage an Brunelleschi. Der Wettbewerb um neue Bronzeportale und die Paradiestüren am Florentiner Baptisterium

Die hinterbliebenen Wettbewerbreliefs für neue Bronzeportale des Florentiner Baptisteriums aus dem Jahr 1401 werden erneut einer Analyse unterzogen unter Berücksichtigung einiger kunsttheoretischer Aspekte Leon Battista Albertis. Dabei fallen Parallelen auf zwischen den Positionen Filippo Brunelleschis und Albertis, die sich grundsätzlich von den Prämissen Lorenzo Ghibertis unterscheiden. Letzterer scheint jedoch das Bronzerelief seines Rivalen nie zu vergessen. An zwei Szenen seiner über 20 Jahre später begonnenen sog. Paradiestür lassen sich direkte Űbernahmen aus der Tafel seines Konkurrenten sowie ein indirekt, kunsttheoretisch verwandter Ansatz in der Darstellungsweise aufzeigen, der für Ghibertis Anerkennung der künstlerischen Ideen und Erfindungen Brunelleschis spricht

Trial by Ambush or Avalanche - The Discovery Debacle

I fell in love with the law in 1946, during my first week in law school. It has been a torrid affair ever since. Ever since has entailed seven years of law practice followed by thirty-two years of law professing, eight of these as a dean. Against this backdrop of fealty, I had occasion recently to encounter the legal process as it presently, honest-to-God, exists. This encounter was not as a lawyer, not as a law professor, not as a consultant, not, that is, as a professional impersonally involved, but as the father of the mother in a child-custody case. It was a client exposure. I came away from the experience not merely angry and disillusioned, but outraged. Why

Voluntary Impartial Review of Labor: Some Reflections

The purpose of this paper is to examine the emerging concept of voluntary impartial review of the decisions of organizational tribunals passing upon internal disputes. Attention will center on the application of this concept to labor unions - the only area in which it has yet been tried

Thermomechanical characterization and modeling of cold-drawing of poly(ethylene Terephthalate)

The tensile testing of amorphous polyethylene terephthalate is observed until failure by IR thermography and optical strain measurement. The deformation can be subdivided in six deformation phases: elastic deformation, neck formation with a localized sharp temperature rise, neck propagation, which is also known as cold-drawing, with heat generation in a transition zone, crack initialization with local heating, crack growth, and rupture. These deformation phases are showing different mechanical and thermal reactions to the deformation. The initial and drawn samples are studied with differential scanning calorimetry. Alongside heating due to the dissipation of mechanical energy, latent heat due to strain-induced crystallization was detected. While the material is cold-drawn, a high dependence on the crosshead speed is found for the heat generation as well as the draw ratio, mechanical response, and morphological changes due to orientation and crystallization. For cold-drawing, a thermomechanical model is introduced, which is based on the first law of thermodynamics and reproduces the temperature distribution along the sample

Maximum Alpha to Minimum Fission Pulse Amplitude for a Parallel-Plate and Hemispherical Cf-252 Ion-Chamber Instrumented Neutron Source

In an instrumented Cf-252 neutron source, it is desirable to distinguish fission events which produce neutrons from alpha decay events. A comparison of the maximum amplitude of a pulse from an alpha decay with the minimum amplitude of a fission pulse shows that the hemispherical configuration of the ion chamber is superior to the parallel-plate ion chamber