F. Rohrlich has recently published two papers, including the paper under review, advocating a particular delay-differential equation as an approximate equation of motion for classical charged particles, which he characterizes as providing a “fully acceptable classical electrodynamics”. This Comment notes some mathematical and physical problems with this equation. It points out that most of the ...

The concept of sustainability has been highly valued by all aspects life, while the supply chain plays a critical role in production and logistics. Supply management (SCM) is continuously transformed information technology (IT). purpose this study to review discuss effect technology-based SCM on sustainability. This paper conducted systematic literature collecting author-anchored keywords from ...

TESLA-FEL Report 2005-09 J. Sekutowicz, J. Iversen, G. Kreps, W.-D. Möller, W. Singer, X. Singer Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22603 Hamburg, Germany I. Ben-Zvi, A. Burrill, J. Smedley, T. Rao Brookhaven National Laboratory, Upton, NY 11973, USA M. Ferrario* Istituto Nazionale di Fisica Nucleare, Via E. Fermi 40, 00044 Frascati, Italy P. Kneisel Thomas Jefferson National Ac...

Two computational methods for pruning a reassigned spectrogram to show only quasisinusoidal components, or only impulses, or both, are presented mathematically and provided with step-by-step algorithms. Both methods compute the second-order mixed partial derivative of the short-time Fourier transform phase, and rely on the conditions that components and impulses are each well-represented by rea...

B. Ziaja,1,2,* H. N. Chapman,1,3 R. Santra,1,4 T. Laarmann,5 E. Weckert,5 C. Bostedt,6 and T. Möller7 1Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, D-22607 Hamburg, Germany 2Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, PL-31-342 Kraków, Poland 3Department of Physics, University of Hamburg, Luruper Chaussee 149, D-227...

Samples of soil, water, aluminum, copper and iron were irradiated in the stray radiation field generated by the interaction of a 28.5 GeV electron beam in a copper-dump in the Beam Dump East facility at SLAC. The specific activity induced in the samples was measured by gamma spectroscopy and other techniques. In addition, the isotope production in the samples was calculated with detailed Monte ...

First-principles calculations based on density functional theory, both with the local density approximation (LDA) and with generalized gradient corrections (GGA), have been used to simulate solid and liquid MgO in direct coexistence in the range of pressure 0 < or = p < or = 135 GPa. The calculated LDA zero pressure melting temperature is T(LDA)m = 3110 +/- 50 K, in good agreement with the expe...

In unicellular organisms, synonymous codon bias is correlated with the level of gene expression [1]. The codon bias becomes stronger in genes with higher expression levels. It becomes weaker but still remains in genes with lower expression levels. The bias means that synonymous codons are not used at random. In highly expressed genes, the synonymous codon usage is mainly determined by an abunda...

Hyogo Ion Beam Medical Center, 1-2-1, Kouto, Shingu-cho, Ibo-gun, Hyogo, 679-5165, Japan Toyama National College of Technology, 1-2 Ebie-Neriya, Imizu, Toyama, 933-0293, Japan University of California San Francisco, San Francisco, CA, 94143-1708, USA Ashikaga Institute of Technology, 268-1, Omae-cho, Ashikaga, Tochigi, 326-8558, Japan National Institute for Radiology Science, 4-9-1, Anagawa, In...

The present state of the art in photoinjector designs will be presented in this review. We will discuss both proposed and operational photoinjectors with operating frequencies from L-band (1.424 GHz) to X-band (11.424 GHz). Also a novel pulsed DC gun will be presented. All the RF photoinjector discussed here use an emittance compensation scheme [1] [2] to align the different slices of the the e...