15,480 research outputs found
Analysis of the spin structure function and twist-3 operators
We discuss the spin-dependent structure function in the
framework of the operator product expansion. It is noted that the anomalous
dimensions and coefficient functions for the twist-3 gluon-field-dependent
operators depend on the choice of the operator basis. The role played by the
operators proportional to the equation of motion is clarified.Comment: 10 pages, Latex, 1 figure (.ps files) appended after \end{document}
as an uuencoded compressed tar fil
The use of the chatter mode in self-adaptive systems
Chatter mode is used advantageously if the ideal model dynamics is described by a switching function, the chatter mode is reached quickly and then sustained, the chatter frequency is reduced, and any zero in the plant transfer function is cancelled
Partial twists and exotic Stein fillings
We give an algorithm which produces infinitely many pairwise exotic Stein
fillings of the same contact 3-manifolds, applying positive allowable Lefschetz
fibrations over the disk. As a corollary, for a large class of Stein fillings,
we realize the topological invariants (i.e. fundamental group, homology group,
homology group of the boundary, and intersection form) of each filling as those
of infinitely many pairwise exotic Stein fillings. Furthermore, applying the
algorithm, we produce various contact 3-manifolds of support genus one each of
which admits infinitely many pairwise exotic Stein fillings.Comment: 42 pages, 18 figures, minor improvement
Employment Quota System in Japan
Employment_QuotaJapanNo83.pdf: 2485 downloads, before Oct. 1, 2020
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