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Abstract Building on the innovative design of In-Vacuum APPLE IVUE32, a for 15mm period cryogenic elliptical undulator (CPMUE15) is proposed. The to be developed under ATHENA collaboration. Initially designed provide radiator SINBAD facility at DESY, comparison made an Afterburner device FLASH1.
The importance of reasoning about recognizability has recently been stressed in finding type flaw attacks, in which a protocol message may be forged from another message. However, the problem of deciding recognizability has never been fully exploited. To fill this gap, we present a terminating procedure to decide recognizability under the standard Dolev-Yao model. By incorporating the proposed ...
The Kerberos authentication system, a part of MIT’s Project Athena, has been adopted by other organizations. Despite Kerberos’s many strengths, it has a number of limitations and some weaknesses. Some are due to specifics of the MIT environment; others represent failures in the protocol design. We discuss a number of such problems, and present solutions to some of them. We also demonstrate how ...
Electrostatic discharge (ESD) failure is one of the most important causes of reliability problems, therefore the design and optimization of ESD devices have to be done. To achieve very short time to market and reduce the development effort, one tries to make use of the benefit of simulation tools. However, due to the complex physical mechanism of ESD events and the hard mathematic calculation i...
Production of antihydrogen atoms by mixing antiprotons with a cold, confined, positron plasma depends critically on parameters such as the plasma density and temperature. We discuss nondestructive measurements, based on a novel, real-time analysis of excited, low-order plasma modes, that provide comprehensive characterization of the positron plasma in the ATHENA antihydrogen apparatus. The plas...
Feedback from supernovae (SNe) is an essential mechanism that self-regulates the growth of galaxies, and a better model SN feedback still needed in galaxy formation simulations. In first part this paper, using Eulerian hydrodynamic code Athena++, we find universal scaling relations for time evolution momentum radius superbubble, when are scaled by those at shell-formation time. second develop b...
We describe the algorithm, implementation and numerical tests of a multifluid dust module in Athena++ magnetohydrodynamic (MHD) code. The can accommodate an arbitrary number species interacting with gas via aerodynamic drag (characterized by stopping time), solvers. In particular, we two second-order accurate, two-stage, fully-implicit solvers that are stable stiff regimes including short time ...
A SUMMARY BY DIMITRI P. BERTSEKAS We provide a summary of theoretical concepts and results relating to convex analysis, convex optimization, and duality theory. In particular, we list the relevant definitions and propositions (without proofs) of the author’s book “Convex Optimization Theory,” Athena Scientific, 2009. For ease of use, the chapter, section, definition, and proposition numbers of ...
Shelf-life of scientific discoveries is usually less than few decades because science itself is an ever evolving discipline. Therefore, it is truly remarkable that pyloromyotomy described by Conrad Ramstedt (Fig. 1) is celebrating centennial this year. In October 1912, Ramstedt described the cure of hypertrophic pyloric stenosis (HPS) and that serendipitous discovery has stood the test of 100 y...
ATHENA research program proposes innovative approach to address needs for interoperability of enterprise applications. It addresses in particular the area of Collaborative Product Design, for Aerospace but also other manufacturing sectors. Innovation comes from a holistic approach of the problem at enterprise, knowledge, ICT and semantic levels. It implies simultaneous advanced usage of technol...
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