Four XMM-Newton X-ray observations of the central region of the Andromeda Galaxy (M31) have revealed an X-ray source that varies in luminosity over ∼1–3 10 38 erg s −1 between observations and also displays significant variability over timescales of a few hundred seconds. The power density spectra of lightcurves obtained in the 0.3–10 keV energy band from the three EPIC instruments on board XMM...

Information flow policies (labels and lattices) are not stated in terms that administrators and developers articulate security goals (natural language). This raises an important question central to the proposed investigation, “how do you translate higher level policies into information flow implementation?” Our approach is to develop models and algorithms that enable this translation. Consider ...

In this paper, we determine geometric information on slope lengths of a large class of knots in the 3–sphere, based only on dia-grammatical properties of the knots. In particular, we show such knots have meridian length strictly less than 4, and we find infinitely many families with meridian length approaching 4 from below. Finally, we present an example to show that, in contrast to the case of...

Abstract Introduction Although the precise mechanisms by which anesthetics induce unconsciousness are unknown, there is evidence that shared brain circuits engaged during sleep and general anesthesia. The parafacial zone (PZ) of brainstem has recently been identified as a sleep-promoting region. Specifically, GABAergic neurons in PZ (PZ-GABA) active non-REM sleep. role PZ-GABA anesthetic-induce...

In [1], Berger and Colmez introduced a theory of families of étale (φ,Γ)-modules associated to families of p-adic Galois representations. Inspired by their works, we consider families of φ-modules over a reduced affinoid algebra where the base is fixed by Frobenius actions. We prove some results in this framework including the semicontinuity of variation of HN-polygons. These results will be ap...