منابع مشابه
Martin Rama
Tunisia’s unemployment rate has been among the highest in the world for almost two decades. This article claims that such a high rate reflects measurement problems rather than labor market inefficiency. After discussing the reasons why unemployment rates may not be comparable across countries and reviewing the tools that are available to analyze unemployment in a specific country, the article p...
متن کاملRyan Martin
The focus of my research is extremal graph theory and random combinatorial structures. I have also worked in a variety of other areas, including intersecting hypergraphs, the theory of positional games and Ramsey theory. Combinatorics, and particularly graph theory, has a wide variety of applications. My own research in the edit distance of graphs has applications in biology and computer scienc...
متن کاملRay-tracing and Interferometry in Schwarzschild Geometry
Here, we investigate the possible optical anisotropy of vacuum due to gravitational field. In doing this, we provide sufficient evidence from direct coordinate integration of the null-geodesic equations obtained from the Lagrangian method, as well as ray-tracing equations obtained from the Plebanski’s equivalent medium theory. All calculations are done for the Schwarzschild geometry, which resu...
متن کاملSchwarzschild Spacetime without Coordinates
We discuss how to construct the full Schwarzschild (Kruskal-Szekeres) spacetime in one swoop by using the bundle of orthonormal Lorentz frames and the Einstein equation without the use of coordinates. We never have to write down the Kruskal-Szekeres or an equivalent form of the metric. email: [email protected]
متن کاملBill Martin
Bill Martin studied biology at Texas A&M and the University of Hannover. He did his PhD at the Max-Planck Institute for Breeding Research in Cologne under the generous supervision of Heinz Saedler, who discovered the transposons known as IS elements. After fi nishing his PhD in 1988, he did his postdoctoral work on chloroplastcytosol isoenzymes, endosymbiosis, and gene transfer at the Universit...
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ژورنال
عنوان ژورنال: Physics Today
سال: 1997
ISSN: 0031-9228,1945-0699
DOI: 10.1063/1.2833567