The Power Control Rack: A Modular Solution for Building Power Systems

LDRD proposal presentation to ETA ALD at LBNL. Proposing use of SST to create a modular efficient single point of common coupling for buildings

The Last Act of Revolution, A Chamber Opera in One Act

The Last Act of Revolution is a one-act chamber opera scored for two sopranos, tenor, baritone, and piano. The libretto, written by Lucas Richmond, is based on historical events surrounding the suicide of Ulrike Meinhof, a key member of the militant Red Army Faction, also known as the Baader-Meinhof Gang. The opera takes place during the final hours of Meinhof's life and explores the psychological dimensions of political violence. The setting is the high security wing of Stammheim prison where the leadership of the RAF are being held during trial. Their specialized "prison within the prison" consists of several cells, all connected to a common room where they may meet for certain hours of the day to plan their defense. Only the common room and Ulrike's cell are represented. The time is the afternoon and evening of May 8th, 1976. When looking for musical inspiration for The Last Act of Revolution I turned to the Bertolt Brecht's play Die Maßnahme, which the members of the RAF quoted with some frequency. Hanns Eisler wrote several songs and incidental music for the play; a number of these songs are quoted throughout the opera and partially form the basis of its leitmotivic structure. The quoted songs (and the measures of their first appearance in the opera) are as follows: "Andere die Welt, sie braucht es" (mm. 83-85, 150-151) "Lob der illegalen Arbeit" (mm. 118-122), and "Solidaritätslied" (mm. 169-170). The leitmotif associated with Ulrike is derived from "Andere die Welt, sie braucht es." Transformations of this motif can be tracked in APPENDIX II, which includes a near-quotation of the original song (mm. 877-879). APPENDIX II also illustrates first instances of other significant leitmotifs; "Solidarity," is a modified quotation of the Brecht-Eisler "Solidaritätslied," as well as comprising the genesis of "Lighting the Way." "Andreas/Swine" and "Ulrike's Disgust" are original melodies. "Vile Acts" is an additional quotation from "Andere die Welt, sie braucht es." The harmonic content of the music is linked to characters and actions in the drama. Much of the harmonic material is derived from aspects of the hexatonic collection. The pc set (01245789) in the opening passage of the piece (mm. 1-32, typically associated with Andreas) is a hexatonic superset. Discussion of the hijacking plot is often accompanied by pure hexatonic passages (mm. 211-212), as well as a pitch field comprised of two hexatonic sets (mm. 229-243). The motif "Lighting the Way" when sung by Ulrike, occurs in the key of A major. This motif appears in Ulrike's Scene III aria "The revolution falters" which, when compared with the prevailing F minor harmony of the aria, produces a hexatonic relationship. The "Solidarity" motif is often accompanied by an A/Eb harmony that forms an octatonic collection (mm. 287-290); this particular harmony/collection (often absent the "solidarity" motif) accompanies discussions of solidarity and the revolution

Growth, properties and magnetism of CaKFe4As4

CaKFe4As4 is a new stoichiometric member of the iron-based superconductors (FeSCs) which is a superconductor below 35 K. In this thesis I outline how single crystals of this material are grown for the first time and their basic properties. I discuss how substituting Ni or Co for Fe stabilizes antiferromagnetism at the expense of superconductivity. I reveal how the crystal structure of CaKFe4As4 leads to the observed hedgehog spin-vortex crystal magnetic order instead of the magnetic structures adopted by the other FeSCs. Finally, I propose a series of new magneto-elastic couplings in this new magnetic structure

Survey of Water and Ammonia in Nearby galaxies (SWAN): Resolved Ammonia Thermometry, and Water and Methanol Masers in IC 342, NGC 6946 and NGC 2146

The Survey of Water and Ammonia in Nearby galaxies (SWAN) studies atomic and molecular species across the nuclei of four star forming galaxies: NGC\,253, IC\,342, NGC\,6946, and NGC\,2146. As part of this survey, we present Karl G. Jansky Very Large Array (VLA) molecular line observations of three galaxies: IC\,342, NGC\,6946 and NGC\,2146. NGC\,253 is covered in a previous paper. These galaxies were chosen to span an order of magnitude in star formation rates and to select a variety of galaxy types. We target the metastable transitions of ammonia NH$_{3}$(1,1) to (5,5), the 22\,GHz water (H$_2$O) ($6_{16}-5_{23}$) transition, and the 36.1\,GHz methanol (CH$_3$OH) ($4_{-1}-3_{0}$) transition. {We use the NH$_{3}$\ metastable lines to perform thermometry of the dense molecular gas.} We show evidence for uniform heating across the central kpc of IC\,342 with two temperature components for the molecular gas, similar to NGC 253,} of 27\,K and 308\,K, and that the dense molecular gas in NGC\,2146 has a temperature $<$86 K. We identify two new water masers in IC\,342, and one new water maser in each of NGC\,6946 and NGC\,2146. The two galaxies NGC\,253 and NGC\,2146, with the most vigorous star formation, host H$_2$O kilomasers. Lastly, we detect the first 36\,GHz CH$_3$OH\ masers in IC\,342 and NGC\,6946. For the four external galaxies the total CH$_3$OH\ luminosity in each galaxy suggests a correlation with galactic star formation rate, whereas the morphology of the emission is similar to that of HNCO, a weak shock tracer

Wetting and Reactive Air Brazing of BSCF for Oxygen Separation Devices

The goals of this project are to develop a Reactive Air Brazing (RAB) alloy and process for joining Barium strontium cobalt ferrite (BSCF), and to develop a fundamental understanding of the wettability and microstructral development due to reaction kinetics in BSCF/Ag-MexOy systems.https://digitalcommons.mtech.edu/urp_aug_2013/1003/thumbnail.jp

Fast Sequence Component Analysis for Attack Detection in Synchrophasor Networks

Modern power systems have begun integrating synchrophasor technologies into part of daily operations. Given the amount of solutions offered and the maturity rate of application development it is not a matter of "if" but a matter of "when" in regards to these technologies becoming ubiquitous in control centers around the world. While the benefits are numerous, the functionality of operator-level applications can easily be nullified by injection of deceptive data signals disguised as genuine measurements. Such deceptive action is a common precursor to nefarious, often malicious activity. A correlation coefficient characterization and machine learning methodology are proposed to detect and identify injection of spoofed data signals. The proposed method utilizes statistical relationships intrinsic to power system parameters, which are quantified and presented. Several spoofing schemes have been developed to qualitatively and quantitatively demonstrate detection capabilities.Comment: 8 pages, 4 figures, submitted to IEEE Transaction