A recently proposed gedanken experiment [G.Z. Machabeli and A.D. Rogava. Phys. Rev. A 50, 98 (1994)], exhibiting surprising behavior, is reexamined. A description of this behavior in terms of the laboratory inertial frame is presented, avoiding uncertainties arising due to a definition of a centrifugal force in relativity. The surprising analogy with the radial geodesic motion in Schwarzschild ...

Two-photon collisions provide an ideal laboratory for testing lnany features of quantum chromodynamics, espaially the interplay between the vector-meson-dominated and point-like hadronic interactions of the photon. A number of QCD applications are discussed, including: jet and single-particle production at large transverse momentum; the photon structure function and its relationship to the y + ...

We construct a dynamic model of Holdup by applying a framework in capital accumulation games, and derive the Markov perfect equilibrium of the game. Firmsf specific investments for the current period affect the relational skill (state variable) in the next period. Therefore, firms decide their individual investment levels taking into account their impact on strategic interactions from the next...

This article reflects on several recent advances in the studies of structure and dynamics of cluster anions, both as unique species and as a conceptual bridge between isolated molecules and the condensed phase. Applications involving photofragment and photodetachment spectroscopy, as well as femtosecond timeresolved experiments, are described. Special emphasis is given to the effects of microsc...

Feedback of class memberships is incorporated into multimodal pattern classifiers and their unsupervised learning algorithm is presented. Classification decision at low levels is revised by the feedback information which also enables the reconstruction of patterns at low levels. The effects of the feedback are examined for the McGurk effect by using a simple model. key words: multimodal pattern...

By making use of the path-integral duality transformation, string representation of the Abelianprojected SU(3)-QCD with the Θ-term is derived. Besides the short-range (self-)interactions of quarks (which due to the Θ-term acquire a nonvanishing magnetic charge, i.e. become dyons) and electric Abrikosov-Nielsen-Olesen strings, the resulting effective action contains also a long-range topological...

A theoretical study is presented for interactions between surface acoustic waves ~SAWs! and a two-dimensional electron gas ~2DEG! in the presence of spin-orbit ~SO! interaction ~SOI! induced by the Rashba effect. It is found that the presence of the SOI in a 2DEG can open up new channels for electronic transitions. As a result, an enhanced absorption of the SAWs by a 2DEG can be achieved throug...

The kinetics of Cu, Cd and Pb accumulation by the macroalga, Fucus ceranoides, was studied under simulated estuarine conditions. Accumulation of Cu and Pb proceeded via a pseudo-first-order reaction that was reversible, suggesting desorption or efflux of accumulated metal, with forward rate constants on the order of 0.1 h 1. For both metals, reaction reversibility increased and the equilibrium ...

I develop a model of an R&D race with knowledge accumulation. My model does not inherit the memorylessness property of the exponential distribution that troubles existing models of R&D races. Hence, firms’ knowledge stocks are no longer irrelevant to their behavior during the R&D race, and knowledge accumulation has strategic implications. In this more general setting, I obtain results that sta...

We analyze the charges carried by loops of string in models with non-abelian local discrete symmetry. The charge on a loop has no localized source, but can be detected by means of the Aharonov—Bohm interaction of the loop with another string. We describe the process of charge detection, and the transfer of charge between point particles and string loops, in terms of gauge-invariant correlation ...