This paper presents explicit expressions for the mean sojourn times in a multi-stage tandem queue, with Poisson arrival and general service times, served by a s,ingle server with a cyclic switching rule, M/GI-G2-"'GN/l. The expressions are derived using the results of the two-stage tandem queue, M/GI-G2/1, already considered by some authors and the well-known Pollaczek-Khintchine formula. With ...

Perlick’s classification of (3 + 1)-dimensional spherically symmetric and static spacetimes (M, η = − 1 V dt + g) for which the classical Bertrand theorem holds [Perlick V 1992 Class. Quantum Grav. 9 1009] is revisited. For any Bertrand spacetime (M, η) the term V (r) is proven to be either the intrinsic Kepler– Coulomb or the harmonic oscillator potential on its associated Riemannian 3manifold...

Emittance growth due to intrabeam scattering (IBS) is a major limitation for high energy high density accelerators. The reachable maximum particle density depends strongly on how IBS can be compensated for by electron cooling (EC). Hence calculations of the growth rates of the horizontal and vertical emittances
̇h,v/ h,v and of the (longitudinal) momentum spread
̇ / due to IBS are necessary for...

R. H. Siemann,(‘)t D. G. Cassel,(‘)t G. J. Feldman, (‘It M. S. Alam,(3) R. Aleksan,c2) W. B. Atwood,@) J. Bartelt,c2) J. J. Bisognano,c4) J. R. Boyce,14) D. B. Cline,(‘) G. Coignet,(‘) P. S. Drell,(‘) A. M. Eisner,(‘) A. Fridman,c2) A. A. Garren,(‘) P. Grosse-Wiesmann,(2) D. G. Hitlin,cg) S.-O. Holmgren,(“) H. Kagen,@‘) N. Katayama,c3) H. Koiso,(12) N. B. Mistry,(‘) T Nakada (I31 P. J. Oddone, ...

Prior program representations for genetic programming that incorporated features of modern programming languages solved harder problems than earlier representations, but required more complex genetic operators. We develop the idea of using combinator expressions as a program representation for genetic programming. This representation makes it possible to evolve programs with a variety of progra...

This data article provides the free amino acid contents of Japanese basket clams from different areas of Lake Abashiri and Abashirigawa River, which belong to the same water system. Abashirigawa River flows into the south side of Lake Abashiri and then runs out from the northeast side of the lake. Clams were caught in three different areas in Lake Abashiri (Memanbetsu, Yobito, and Katayama) and...

We develop a closed loop subspace identification method based on stochastic realization theory. Using the preliminary orthogonal decomposition of (Picci and Katayama, 1996b) we show that, under the assumption that the exogenous input is feedback-free and persistently exciting (PE), the identification of closed loop systems is divided into two subproblems: the deterministic identification of the...

However, in many infections the effect on the lymphatics may be both consistent and clinically marked. The lymphadenopathy may be local or generalized and lymphadenopathy is or can be a significant feature of acute HIV infection, primary Herpes simplex, some rickettsial infections, tularaemia, plague, cat-scratch fever due to Bartonella henselae, primary syphilis, lymphogranuloma venereum, chan...

Corrigendum: Length of intact plasma membrane determines the diffusion properties of cellular water Sato Eida, Marc Van Cauteren, Yuka Hotokezaka, Ikuo Katayama, Miho Sasaki, Makoto Obara, Tomoyuki Okuaki, Misa Sumi & Takashi Nakamura Scientific Reports 6:19051; doi: 10.1038/srep19051; published online 11 January 2016; updated on 20 May 2016 This Article contains errors. In Figure 1j, the x-axi...

SUMMARY The BioRuby software toolkit contains a comprehensive set of free development tools and libraries for bioinformatics and molecular biology, written in the Ruby programming language. BioRuby has components for sequence analysis, pathway analysis, protein modelling and phylogenetic analysis; it supports many widely used data formats and provides easy access to databases, external programs...