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In this document, we investigate a method to detect overlapping communities in undirected graphs. This project is ongoing work in collaboration1 with Trevor Steil at Lawrence Livermore National Laboratory (LLNL).
Josephson junctions $\($JJs$\)$ are indispensable elements for superconducting quantum electronics. There is a growing need to develop processes for high quality JJs. Here we explore the growth of Ta oxide as a dielectric barrier for Metal-Oxide-Metal overlap JJ implementations. We study films of Ta oxides prepared with reactive magnetron sputtering. TaOx is grown on silicon and Ta films with varying RF power and oxygen concentrations. Tuning these parameters allows us to control the rate of deposition as well as composition of polycrystalline Ta oxides needed to meet our dielectric requirements for Josephson Junctions.
Robotic fiber positioner (RFP) arrays are becoming heavily adopted in wide-field massively multiplexed spectroscopic survey instruments. RFP arrays decrease nightly operational overheads through rapid reconfiguration between fields and exposures. In comparison to similar instruments, SDSS-V has selected a very dense RFP packing scheme where any point in a field is typically accessible to three or more robots. This design provides flexibility in target assignment. However, the task of collisionless trajectory planning is especially challenging. We present two multiagent distributed control strategies that are highly efficient and computationally inexpensive for determining collision-free paths for RFPs in heavily overlapping workspaces. We demonstrate that a reconfiguration path between two arbitrary robot configurations can be efficiently found if a “folded” state, in which all robot arms are retracted and aligned in a lattice-like orientation, is inserted between the initial and final states. Although developed for SDSS-V, the approach we describe is generic and thus applicable to a wide range of RFP designs and layouts. Robotic fiber positioner technology continues to advance rapidly, and in the near future ultra-densely packed RFP designs may be feasible. Our algorithms are especially capable in routing paths in very crowded environments, where we see efficient results even in regimes significantly more crowded than the SDSS-V RFP design.
L/k electron capture ratios and electron capture/positron emission ratios that include effects of electron exchange and imperfect atomic overlap
Spectral transmittance of mixture of carbon monoxide and nitrous oxide for overlapping absorption bands
Overlapping of bands of nitrogen oxide, CO and carbon dioxide in 4.5 micron region determined for inversion experiments
Crater overlap on lunar near side around Tycho
Ultrasonic pulse-echo-overlap method modified for simultaneous measurement of time delay and relative voltages in determining sound velocities and attenuation of solids
Atmospheric IR spectra determination from transmission functions overlapping effects of atmospheric gases
Lunar near side crater overlap, considering formation of Tycho Association
Singlet-singlet energy transfer kinetics dependence on emission and absorption spectra overlap via dipole-dipole interaction
Trajectory computation technique for three-body motion is based on analytical derivation and empirical validation of pseudostate theory. Application of technique yields ''overlapped conic'' trajectories with error magnitudes only 20 percent as great as those of patched conic trajectories.
Diatomic nitrogen ions branch overlapping, discussing rotational line structure in first negative system vibrational bands
Mariners 6 and 7 orbits determination by weighted least squares estimation based on common surface features in overlapping TV pictures
Characteristics of antenna horn feeds consisting of central horn with overlapping peripheral horns
Rigorous adjustment algorithms are discussed which extract hidden information contained in overlapping photographs of star fields. In particular, the development of adequate physical and statistical models is emphasized.
The different methods of reducing measurements on photographic plates by the overlap methods are compared. An attempt is made to distinguish the methods accepted by most astronomers from those not generally agreed upon and from those that are still being studied. Questions examined are: organization of future works, improvement of AGK2 and AGK3, and solutions for the astrographic catalog, as well as considerations of some empirical methods.
A theta pinch has been employed to investigate satellites to the H-like and He-like ion resonance lines of boron and carbon. Identification of the spectra shows an overlap of the Ar IX, Ar XI, and Ar XII lines with the predicted satellite wavelengths, and it is concluded that many of the previously reported satellite lines are due to argon impurities.