Resolution improvements in dipolar resonant excitation have been examined in a round-rod quadrupolar collision cell for values of the Mathieu characteristic exponent beta equal to n/p, where n and m are small integers (prime beta values) versus other beta values where n and p are not small (ordinary beta values). The trajectories of ions moving in the time-varying electric fields of a quadrupol...

Zero-inflated time series data are commonly encountered in many applications, including climate and ecological modeling, disease monitoring, manufacturing defect detection, and traffic monitoring. Such data often leads to poor model fitting using standard regression methods because they tend to underestimate the frequency of zeros and the magnitude of non-zero values. This paper presents an int...

Figures 1 and 2 shows the …rst drop price against values in the clock auctions for Rs and Es separately, along with the equilibrium bid functions.1 There is a mass of zero, or close to zero, bids on the part of Rs with values in the interval [0, 50] as the theory predicts: R’s with values less than or equal to 50 dropped at or before the clock auction started 28.8% of the time.2 There are also ...

Building on works of Berthé–Steiner–Thuswaldner and Fogg–Nous, we show that the two-dimensional torus, Lebesgue almost every translation admits a natural coding such associated subshift satisfies Boshernitzan criterion. As consequence, for these torus translations, quasi-periodic potential can be approximated uniformly by one which Schrödinger operator has Cantor spectrum zero measure. We also ...

We have measured the characteristics of a superconducting radio-frequency resonator in an external magnetic field. The magnetic field strength has been varied with 10 mT resolution between zero and 6 T. The resonance frequency and the quality factor of the resonator have been found to change significantly as a function of the magnetic field strength. Both parameters show a hysteresis effect whi...

1 Introduction The best algorithms for lossless compression of text are those which adapt to the text being compressed 1]. Two classes of such adaptive techniques are commonly used. One class matches the text against a dictionary of strings seen and transforms the text into a list of indices into the dictionary. These techniques are usually formulated as a variant on Ziv-Lempel (LZ) compression...