cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Song Sketches of Hugo Wolf
Creators: name: Youens, Susan
Publisher: name: Columbia University
Year: 1990
Subjects: Music
Biography

description: This articles takes a look at the composer Hugo Wolf who was rumored to create symphonies in a frenzy during one sitting. The author refutes this rumor by analyzing notes and half-finished symphonies created by Wolf and comparing these works to those which he published. The conclusion argues against the romanticizing legend of Wolf composing in a manic frenzy, without need of sketching, of revision, or compositional labor of any kind. Musical decisions both pre- and postdated the sketches that are observed within the article. The changes between the sketches and the final versions testify to Wolf's continuous refinement of each work. The glimpse that these sketches offer of Wolf at work is more compelling and provocative than the romantic evocation of mystical, unmediated inspiration.
Sonnenfleckenzeichnung Nr. 28225.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.09.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Sonnenfleckenzeichnung Nr. 28162.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.05.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
title: Kurzer Abriß als Leitfaden zur Beurtheilung der Bestrebungen und Grundsätze des "Allgemeinen deutschen Vereins zum Schutze vaterländischer Arbeit"; [1848]
title: [Frankfurt a/m. den 14 November 1848]
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Lithographie in deutscher Kurrentschrift
Near-Core Acoustic Glitches are Not Oscillatory: Consequences for Asteroseismic Probes of Convective Boundary Mixing
Creators: name: Lindsay, Christopher J.
name: Ong, J. M. Joel
name: Basu, Sarbani
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Asteroseismology has been used extensively in recent years to study the interior structure and physical processes of main sequence stars. We consider prospects for using pressure modes (p-modes) near the frequency of maximum oscillation power to probe the structure of the near-core layers of main sequence stars with convective cores by constructing stellar model tracks. Within our mass range of interest, the inner turning point of p modes as determined by the JWKB approximation evolves in two distinct phases during the main sequence, implying a sudden loss of near-core sensitivity during the discontinuous transition between the two phases. However, we also employ non-JWKB asymptotic analysis to derive a contrasting set of expressions for the effects that these structural properties will have on the mode frequencies, which do not encode any such transition. We show analytically that a sufficiently near-core perturbation to the stellar structure results in non-oscillatory, degree-dependent perturbations to the star's oscillation mode frequencies, contrasting with the case of an outer glitch. We also demonstrate numerically that these near-core acoustic glitches exhibit strong angular degree dependence, even at low degree, agreeing with the non-JWKB analysis, rather than the degree-independent oscillations which emerge from JWKB analyses. These properties have important implications for using p-modes to study near-core mixing processes for intermediate-mass stars on the main sequence, as well as for the interpretation of near-center acoustic glitches in other astrophysical configurations, such as red giants.
description: 14 pages, 5 figures, Accepted for publication in ApJ: April 12, 2023
Biomedicinsko inženjerstvo: Primena istraživanja u kosmičkoj medicini
Creators: name: Miljković, Nadica
Publisher: name: Zenodo
Year: 2022
Subjects: biosignali
biomedicinski signali
EKG
EMG
EGG
električna stimulacija
psychology
automotive
space medicine
biosignals
biomedical signals
electrical stimulation
psihologija
kosmička medicina
automobilska industrija

description: Prezentacija za predavanje po pozivu koja je održana 29. novembra 2022. godine tokom BNE 2022 (eng. Brand New Engineers) "Od integrala do inženjera" konferencije u organizaciji Udruženja studenata elektrotehnike – Lokalnog komiteta Beograd. Rezime predavanja Cilj predavanja je da se predstave pravci istraživanja i razvoja u biomedicinskom inženjerstvu sa praktičnim primerima iz autorkinog iskustva i sa primenom u kosmičkoj medicini. U predavanju će biti prikazano kakve posledice boravak u svemiru može imati po ljude i kakav je značaj primene istraživanja iz oblasti biomedicinskog inženjerstva. Tokom predavanja će biti predstavljeni osnovni koncepti za merenje električnih potencijala skeletnih mišića – elektromiografija (EMG), električnih potencijala srca – elektrokardiografija (EKG) i električnih potencijala glatkih mišića želuca – elektrogastrografija (EGG). Pored prikaza metoda za analizu i merenje elektrofizioloških signala, predavanje će uključiti i primenu električne stimulacije u medicini sa posebnim akcentom na zdravlje kosmonauta. Na kraju, predavanje će uključiti i primenu telemedicine u svemiru koja predstavlja značajan element za razmenu informacija u kosmičkoj medicini. NAPOMENA: Ovo predavanje predstavlja skraćeno i modifikovano predavanje “Biomedicinsko inženjerstvo: Primena istraživanja u medicine, psihologiji, automobilskoj industriji i kosmičkoj medicini” koje je autorka održala 27.10.2021. u Laboratoriji za fiziku 010 Instituta za nuklearne nauke Vinča Univerziteta u Beogradu koje se nalazi kao posebna verzija Zenodo repozitorijuma (https://zenodo.org/record/5599796).
description: Title in English: "Biomedical engineering: Application in space medicine"
Sonnenfleckenzeichnung Nr. 28231.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.10.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
La Política y los Intereses Extranjeros: Un Artículo de Luis Cabrera
Creators: name: Piccato, Pablo A.
Publisher: name: Columbia University
Year: 2001
Subjects: subject: History
subject: Political science
subject: FOS: Political science

description: En la sección de documentos Pablo Piccato nos presenta con una carta de Luis Cabrera publicada en el periódico La Vanguardia en 1920. La carta es un esfuerzo por presentar la opinión de Cabrera sobre la si-tuación política mexicana dos meses después del asesinato de Carranza y el ocaso de la carrera política de Cabrera. La carta sitúa de manera fascinante el “lugar” desde donde Cabrera está escribiendo.
Sonnenfleckenzeichnung Nr. 28170.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 19.06.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Acoustophoretic Waltz: a Contactless Exothermal Reaction
Creators: name: Foresti, Daniele
name: Poulikakos, Dimos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The fluid dynamics video shows the acoustophoretic handling of a metal sodium chunks and a water droplets before, during and after mixing. The violent exothermal reaction between solid and liquid introduces an additional phase (hydrogen gas). We developed a unique concept for using ultrasound to stably levitated and move along a plane multiple objects in air, independently from their electromagnetic nature and aspect ratio. This contactless material handling can be extended to hazardous, chemical or radioactive samples.
description: Videos
Joint study of genetic regulators for expression traits related to breast cancer
Creators: name: Zheng, Tian
name: Wang, Shuang
name: Cong, Lei
name: Ding, Yuejing
name: Ionita-Laza, Iuliana
name: Lo, Shaw-Hwa
Publisher: name: Columbia University
Year: 2007
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biometry
subject: Breast--Cancer--Genetic aspects

description: The mRNA expression levels of genes have been shown to have discriminating power for the classification of breast cancer. Studying the heritability of gene expression levels on breast cancer related transcripts can lead to the identification of shared common regulators and inter-regulation patterns, which would be important for dissecting the etiology of breast cancer.
We applied multilocus association genome-wide scans to 18 breast cancer related transcripts and combined the results with traditional linkage scans. Regulatory hotspots for these transcripts were identified and some inter-regulation patterns were observed. We also derived evidence on interacting genetic regulatory loci shared by a number of these transcripts.
In this paper, by restricting to a set of related genes, we were able to employ a more detailed multilocus approach that evaluates both marginal and interaction association signals at each single-nucleotide polymorphism. Interesting inter-regulation patterns and significant overlaps of genetic regulators between transcripts were observed. Interaction association results returned more expression quantitative trait locus hotspots that are significant.
Constructing gene association networks for rheumatoid arthritis using the backward genotype-trait association (BGTA) algorithm
Creators: name: Ding, Yuejing
name: Cong, Lei
name: Ionita-Laza, Iuliana
name: Lo, Shaw-Hwa
name: Zheng, Tian
Publisher: name: Columbia University
Year: 2007
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biometry

description: Rheumatoid arthritis (RA, MIM 180300) is a common and complex inflammatory disorder. The North American Rheumatoid Arthritis Consortium (NARAC) data, as part of the Genetic Analysis Workshop 15 data, consists of both genome scan and candidate gene studies on RA patients.
We applied the backward genotype-trait association (BGTA) algorithm to capture marginal and gene × gene interaction effects of multiple susceptibility loci on RA disease status. A two-stage screening approach was used for the genome scan, whereas a comprehensive study of all possible subsets was conducted for the candidate genes. For the genome scan, we constructed an association network among 39 genetic loci that demonstrated strong signals, 19 of which have been reported in the RA literature. For the candidate genes, we found strong signals for PTPN22 and SUMO4. Based on significant association evidence, we built an association network among the loci of PTPN22, PADI4, DLG5, SLC22A4, SUMO4, and CARD15. To control for false positives, we used permutation tests to constrain the family-wise type I error rate to 1%.
Using the BGTA algorithm, we identified genetic loci and candidate genes that were associated with RA susceptibility and association networks among them. For the first time, we report possible interactions between single-nucleotide polymorphisms/genes, which may be useful for biological interpretation.
High Energy Heavy Ion Beam Enhanced Adhesion of Gold Films to GaAs
Creators: name: Paine, Scott Nelson
Publisher: name: California Institute of Technology
Year: 1984
Subjects: high energy heavy ion beams
GaAs
Applied Physics
gold films

description: Improvement of the adhesion of gold films to GaAs substrates by irradiation with a beam of high energy heavy ions was studied by Scotch Tape, scrub, and scratch test methods. Simple measurements of the effect of irradiation on the electrical contact properties of the Au/GaAs interface were also made. Substrate materials were taken from four differently doped GaAs wafers, thus providing a selection of substrate electronic properties.

The results indicate dependence of the ion dose threshold for improved adhesion on the bulk electronic properties of the substrate.
Detector Design and Performance Analysis for Target Detection in Subspace Interference
Creators: name: Liu, Weijian
name: Liu, Jun
name: Liu, Tao
name: Chen, Hui
name: Wang, Yong-Liang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applications (stat.AP)
subject: Other Statistics (stat.OT)
subject: FOS: Computer and information sciences

description: It is often difficult to obtain sufficient training data for adaptive signal detection, which is required to calculate the unknown noise covariance matrix. Additionally, interference is frequently present, which complicates the detecting issue. We provide a two-step method, termed interference cancellation before detection (ICBD), to address the issue of signal detection in the unknown Gaussian noise and subspace interference. The first involves projecting the test and training data to the interference-orthogonal subspace in order to suppress the interference. Utilizing traditional adaptive detector design ideas is the next stage. Due to the smaller dimension of the projected data, the ICBD-based detectors can function with little training data. The ICBD has two additional benefits over traditional detectors. Lower computational burden and proper operation with interference being in the training data are two additional benefits of ICBD-based detectors over conventional ones. We also give the statistical properties of the ICBD-based detectors and demonstrate their equivalence with the traditional ones in the special case of a large amount of training data containing no interference
description: This manuscript is submitted to IEEE SPL with paper ID SPL-35580-2023 and the decision "AQ - Publish In Minor, Required Changes"
title:  quadruple helix approach to the Regional Innovation System in Corner Brook and surrounding area: case study of a local innovation project applying waste heat from Corner Brook Pulp & Paper Limited for greenhouse operations
Creators: name: Bayramov, Elmaddin
Publisher: name: Memorial University of Newfoundland
Year: 2022

description: The Regional Innovation System (RIS) model provides important insights into the innovation performance of regions by investigating the interaction of organizations with each other and their environment in these regions. There is a lack of literature on RIS in resource-dependent rural and peripheral regions. This thesis contributes to our understanding of RIS in resource-based regions by investigating the interaction between the quadruple helix of government, post-secondary institutions, the private sector, and community organizations to investigate the current state of RIS in Corner Brook and its surrounding area in Newfoundland and Labrador (NL). To achieve this, this study uses context analysis and a case study approach. The thesis reveals a number of challenges and opportunities to further develop RIS in the region. The findings suggest that there is a lack of interaction among key quadruple helix actors of RIS in Corner Brook and its surrounding area, especially between the private sector and other actors of the quadruple helix. On the other hand, strong knowledge infrastructure, the presence of enough support organizations, rich natural resources, quality transportation infrastructure, and close-knit ties within the small community offer good prospects for the future of RIS in the region. Findings from the case study indicate that, although establishing cross-sectoral partnerships with the quadruple helix actors can be challenging and time-consuming, the application of this approach to develop innovation-based projects could offer tremendous benefits to the region. Based on the findings, recommendations are provided for each category of actors involved in the quadruple helix approach to encourage innovations in Corner Brook and the surrounding area.
Sonnenfleckenzeichnung Nr. 28215.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.09.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Self-Interference Cancellation with Phase Noise Induced ICI Suppression for Full-Duplex Systems
Creators: name: Ahmed, Elsayed
name: Eltawil, Ahmed M.
name: Sabharwal, Ashutosh
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: One of the main bottlenecks in practical full-duplex systems is the oscillator phase noise, which bounds the possible cancellable self-interference power. In this paper, a digitaldomain self-interference cancellation scheme for full-duplex orthogonal frequency division multiplexing systems is proposed. The proposed scheme increases the amount of cancellable selfinterference power by suppressing the effect of both transmitter and receiver oscillator phase noise. The proposed scheme consists of two main phases, an estimation phase and a cancellation phase. In the estimation phase, the minimum mean square error estimator is used to jointly estimate the transmitter and receiver phase noise associated with the incoming self-interference signal. In the cancellation phase, the estimated phase noise is used to suppress the intercarrier interference caused by the phase noise associated with the incoming self-interference signal. The performance of the proposed scheme is numerically investigated under different operating conditions. It is demonstrated that the proposed scheme could achieve up to 9dB more self-interference cancellation than the existing digital-domain cancellation schemes that ignore the intercarrier interference suppression.
description: To be presented in Global Telecommunications Conference (GLOBECOM 2013). arXiv admin note: text overlap with arXiv:1307.3796
Sonnenfleckenzeichnung Nr. 28213.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.09.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
MPEC 2023-V116 : 2023 VM3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VM3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Strong and Rapid X-ray Variability of the Super-Eddington Accreting Quasar SDSS J081456.10+532533.5
Creators: name: Huang, Jian
name: Luo, Bin
name: Brandt, W. N.
name: Du, Pu
name: Garmire, Gordon P.
name: Hu, Chen
name: Liu, Hezhen
name: Ni, Qingling
name: Wang, Jian-Min
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report strong and rapid X-ray variability found from the super-Eddington accreting quasar SDSS J081456.10+532533.5 at $z=0.1197$. It has a black-hole mass of $2.7\times10^{7}{M_{\odot}}$ and a dimensionless accretion rate of $\approx4$ measured from reverberation-mapping observations. It showed weak X-ray emission in the 2021 February Chandra observation, with the 2 keV flux density being $9.6^{+11.6}_{-4.6}$ times lower compared to an archival Swift observation. The 2 keV flux density is also $11.7^{+9.6}_{-6.3}$ times weaker compared to the expectation from its optical/UV emission. In a follow-up XMM-Newton observation 32 days later, the 2 keV flux density increased by a factor of $5.3^{+6.4}_{-2.4}$, and the spectra are best described by a power law modified with partial-covering absorption; the absorption-corrected intrinsic continuum is at a nominal flux level. Nearly simultaneous optical spectra reveal no variability, and there is only mild long-term optical/infrared variability from archival data (with a maximum variability amplitude of $\approx50\%$). We interpret the X-ray variability with an obscuration scenario, where the intrinsic X-ray continuum does not vary but the absorber has variable column density and covering factor along the line of sight. The absorber is likely the small-scale clumpy accretion wind that has been proposed to be responsible for similar X-ray variability in other super-Eddington accreting quasars.
description: 16 pages, 8 figures, accepted for publication in ApJ
Latent demographic profile estimation in hard-to-reach groups
Creators: name: McCormick, Tyler H.
name: Zheng, Tian
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Statistics
subject: FOS: Mathematics

description: The sampling frame in most social science surveys excludes members of certain groups, known as hard-to-reach groups. These groups, or subpopulations, may be difficult to access (the homeless, e.g.), camouflaged by stigma (individuals with HIV/AIDS), or both (commercial sex workers). Even basic demographic information about these groups is typically unknown, especially in many developing nations. We present statistical models which leverage social network structure to estimate demographic characteristics of these subpopulations using Aggregated relational data (ARD), or questions of the form “How many X’s do you know?” Unlike other network-based techniques for reaching these groups, ARD require no special sampling strategy and are easily incorporated into standard surveys. ARD also do not require respondents to reveal their own group membership. We propose a Bayesian hierarchical model for estimating the demographic characteristics of hard-to-reach groups, or latent demographic profiles, using ARD. We propose two estimation techniques. First, we propose a Markov-chain Monte Carlo algorithm for existing data or cases where the full posterior distribution is of interest. For cases when new data can be collected, we propose guidelines and, based on these guidelines, propose a simple estimate motivated by a missing data approach. Using data from McCarty et al. [Human Organization 60 (2001) 28–39], we estimate the age and gender profiles of six hard-to-reach groups, such as individuals who have HIV, women who were raped, and homeless persons. We also evaluate our simple estimates using simulation studies.
Sonnenfleckenzeichnung Nr. 28205.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.08.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Discovering pure gene-environment interactions in blood pressure genome-wide association studies data: a two-step approach incorporating new statistics
Creators: name: Wang, Maggie Haitan
name: Huang, Chien-Hsun
name: Zheng, Tian
name: Lo, Shaw-Hwa
name: Hu, Inchi
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biometry

description: Environment has long been known to play an important part in disease etiology. However, not many genome-wide association studies take environmental factors into consideration. There is also a need for new methods to identify the gene-environment interactions. In this study, we propose a 2-step approach incorporating an influence measure that capturespure gene-environment effect. We found that pure gene-age interaction has a stronger association than considering the genetic effect alone for systolic blood pressure, measured by counting the number of single-nucleotide polymorphisms (SNPs)reaching a certain significance level. We analyzed the subjects by dividing them into two age groups and found no overlap in the top identified SNPs between them. This suggested that age might have a nonlinear effect on genetic association. Furthermore, the scores of the top SNPs for the two age subgroups were about 3times those obtained when using all subjects for systolic blood pressure. In addition, the scores of the older age subgroup were much higher than those for the younger group. The results suggest that genetic effects are stronger in older age and that genetic association studies should take environmental effects into consideration, especially age.
Reinforced optimal control
Creators: name: Bayer, Christian
name: Belomestny, Denis
name: Hager, Paul
name: Pigato, Paolo
name: Schoenmakers, John G. M.
name: Spokoiny, Vladimir
Publisher: name: Weierstrass Institute
Year: 2020
Subjects: subject: Reinforced regression
subject: least squares Monte Carlo
subject: stochastic optimal control
subject: 91G20
subject: 93E24

description: Least squares Monte Carlo methods are a popular numerical approximation method for solving stochastic control problems. Based on dynamic programming, their key feature is the approximation of the conditional expectation of future rewards by linear least squares regression. Hence, the choice of basis functions is crucial for the accuracy of the method. Earlier work by some of us [Belomestny, Schoenmakers, Spokoiny, Zharkynbay, Commun. Math. Sci., 18(1):109?121, 2020] proposes to reinforce the basis functions in the case of optimal stopping problems by already computed value functions for later times, thereby considerably improving the accuracy with limited additional computational cost. We extend the reinforced regression method to a general class of stochastic control problems, while considerably improving the method?s efficiency, as demonstrated by substantial numerical examples as well as theoretical analysis.
Optimal control theory for quantum-classical systems: Ehrenfest Molecular Dynamics based on time-dependent density-functional theory
Creators: name: Castro, Alberto
name: Gross, E. K. U.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We derive the fundamental equations of an optimal control theory for systems containing both quantum electrons and classical ions. The system is modeled with Ehrenfest dynamics, a non-adiabatic variant of molecular dynamics. The general formulation, that needs the fully correlated many-electron wave function, can be simplified by making use of time-dependent density-functional theory. In this case, the optimal control equations require some modifications that we will provide. The abstract general formulation is complemented with the simple example of the H$_2^+$ molecule in the presence of a laser field.
Optimization of Cooling System of Transformer by Altering the Geometry of Fins
Creators: name: Farhan, Muhammad
name: Hameed, Muhammad Saad
Publisher: name: figshare
Year: 2020
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Distribution transformers are an essential component employed widely in electrical power transmission systems. Heat generation in summer due to overloading on these transformers, is a critical problem especially in developing countries like Pakistan. These transformers are designed to operate within specific temperature range. The significant factors involved in temperature rise are; quantity of oil, geometric parameters of tank and fins as well as heat transfer coefficients of their materials and coatings. Improper heat dissipation causes frequent tripping, degrades the insulation quality and decreases the transformer’s operational life. Therefore, efficient cooling is an essential requirement for its durable operation. The main objective, of this paper, is to enhance the heat transfer rate of domestic transformers by optimizing the fin design using numerical analysis approach to study its overall performance and life expectancy. The proposed fin geometry has very little research up till now. A comparison of results is performed between conventional and optimized designs in terms of optimum number of fins required for specific overloading conditions. The proposed fin design of transformer for improved cooling process would be helpful, in decreasing annual expenditures being spent by the government on frequent malfunctioning of transformers.
Investigating Time Evolution of Thermal Emission from the Putative Neutron Star in SN 1987A for 50+ Years
Creators: name: Dohi, Akira
name: Greco, Emanuele
name: Nagataki, Shigehiro
name: Ono, Masaomi
name: Miceli, Marco
name: Orlando, Salvatore
name: Olmi, Barbara
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Observations collected with the Atacama Large Millimeter/submillimeter Array (ALMA) and analysis of broadband X-ray spectra have recently suggested the presence of a central compact object (CCO) in SN 1987A. However, no direct evidence of the CCO has been found yet. Here we analyze Chandra X-ray observations of SN 1987A collected in 2007 and 2018, and synthesize the 2027 Chandra and 2037 Lynx spectra of the faint inner region of SN 1987A. We estimate the temporal evolution of the upper limits of the intrinsic luminosity of the putative CCO in three epochs (2018, 2027 and 2037). We find that these upper limits are higher for higher neutron star (NS) kick velocities due to the increased absorption from the surrounding cold ejecta. We compare NS cooling models with both the intrinsic luminosity limits obtained from the X-ray spectra, and the ALMA constraints with the assumption that the observed blob of SN 1987A is primarily heated by thermal emission. We find that the synthetic Lynx spectra are crucial to constrain physical properties of the CCO, which will be confirmed by future observations in the 2040s. We draw our conclusions based on two scenarios, namely the non-detection and detection of NS by Lynx. If the NS is not detected, its kick velocity should be ~700 km/s. Furthermore, the non-detection of the NS would suggest rapid cooling processes around the age of 40 years, implying strong crust superfluidity. Conversely, in the case of NS detection, the mass of the NS envelope must be high.
description: 37 pages, 17 figures, 6 tables, accepted for publication in ApJ
A massless neutrino and lepton mixing patterns from finite discrete subgroups of U(3)
Creators: name: Joshipura, Anjan S.
name: Patel, Ketan M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Finite discrete subgroups of $U(3)$ as possible flavour symmetries $G_f$ for a massless neutrinos with predictive mixing angles are studied. This is done by assuming that a residual symmetry $S_ν$ appropriate for describing a massless neutrino is contained in $G_f$. It is shown that all the groups $G_f$ admitting three dimensional faithful irreducible representation and generated from a specific set of $3\times 3$ matrices imply only one of the three flavour compositions for the massless state namely, unmixed, maximally mixed with equal probabilities and bimaximally mixed with probabilities (0,1/2,1/2) and their permutations. This result holds irrespective of the order of $G_f$ and the choice of $S_ν$ within it. All of these lead to unfavourable leading order prediction for the solar mixing angle. Neutrino mixing pattern is then numerically investigated in case of subgroups of $U(3)$ with order less than 512 and it is found that only one of these can lead to a massless neutrino and leading order predictions for all the mixing angles close to their experimental values. Ways to correct for the solar angle prediction are proposed and two concrete examples giving the observed mixing pattern are discussed.
description: 22 pages, minor changes, version accepted for publication in JHEP
Svenja Nagel, Isis im Römischen Reich. 2 Teilbde. Bd. 1: Die Göttin im griechisch-römischen Ägypten. Bd. 2: Adaption(en) des Kultes im Westen. (Philippika. Altertumskundliche Abhandlungen, Bd. 109.) Wiesbaden, Harrassowitz 2019
Creators: name: Herklotz, Friederike
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: 930 Geschichte des Altertums bis ca. 499

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
Sonnenfleckenzeichnung Nr. 28202.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.08.1990, erstellt von Hans Ulrich Keller.
Zusätzlich ist vermerkt: Sonnenturm
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Coelostat/Teleskop: Das Sonnenlicht wurde über einen Coelostat in eine Vertikalachse, anschliessend von einem Umlenkungsspiegel durch ein Horizontalteleskop gelenkt, und von dessen Okular auf das vertikal fixierte "Sonnenblatt" projiziert.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
Coexistence of cluster spin glass and superconductivity in Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ for $0.060 \leq x \leq 0.071$
Creators: name: Dioguardi, A. P.
name: Crocker, J.
name: Shockley, A. C.
name: Lin, C. H.
name: Shirer, K. R.
name: Nisson, D. M.
name: Lawson, M.
name: apRoberts-Warren, N.
name: Canfield, P. C.
name: Bud'ko, S. L.
name: Ran, S.
name: Curro, N. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present 75As nuclear magnetic resonance data from measurements of a series of Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ crystals with $0.00 \leq x \leq 0.075$ that reveals the coexistence of frozen antiferromagnetic domains and superconductivity for $0.060 \leq x \leq 0.071$. Although bulk probes reveal no long range antiferromagnetic order beyond $x = 0.06$, we find that the local spin dynamics reveal no qualitative change across this transition. The characteristic domain sizes vary by more than an order of magnitude, reaching a maximum variation at $x = 0.06$. This inhomogeneous glassy dynamics may be an intrinsic response to the competition between superconductivity and antiferromagnetism in this system.
description: 8 pages, 5 figures, accepted to Phys. Rev. Lett. Oct. 14, 2013
Sonnenfleckenzeichnung Nr. 28108.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.01.1990, erstellt von Hans Ulrich Keller
Creators: name: Eidgenössische Sternwarte in Zürich (ETH Zürich bzw. vor 1911 Polytechnikum)
Publisher: name: [s.n.]
Year: 1990

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der ehem. Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Zusätzlich notiert: Tabelle mit den statistischen Angaben, für die Werte g, f und mit einer Spalte für A: von blossem Auge sichtbare Flecken, beobachtet mit Hilfe eines korrekt-reduzierenden optischen Filters (naked eye sunspots).
Beobachtungstätigkeit am erwähnten Ort im Auftrag des Schweizerischen Militärdepartements, Bundesamt für Übermittlungstruppen (BAUEM): Zählungen am Fraunhoferschen Normalrefraktor und Zeichnungen am Zeiss-Coudé-Refraktor
A review of macroeconomic models for the WEFE nexus assessment
Creators: name: Castelli, Chiara
name: Castellini, Marta
name: Ciola, Emanuele
name: Gusperti, Camilla
name: Romani, Ilenia Gaia
name: Vergalli, Sergio
name: Castelli, Chiara
name: Castellini, Marta
name: Ciola, Emanuele
name: Gusperti, Camilla
name: Romani, Ilenia Gaia
name: Vergalli, Sergio
Publisher: name: Unknown
Year: 2022
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Research Methods/ Statistical Methods
subject: Resource /Energy Economics and Policy
subject: agent-based
subject: computable general equilibrium
subject: dynamic stochastic general equilibrium
subject: integrated assessment
subject: macroeconomic models
subject: water-energy-food ecosystems nexus

description: The Water, Energy, Food and Ecosystems (WEFE) nexus refers to the system of complex and highly non-linear interconnections between these four elements. It now represents the basic framework to assess and design policies characterized by an holistic environmental end economical perspective. In this work, we provide a systematic review of the macroeconomic models investigating its components as well as combinations of them and their interlinkages with the economic system. We focus on four different types of macroeconomic models: Computable General Equilibrium (CGE) models, Integrated Assessment Models (IAMs), Agent-based Models (ABMs), and Dynamic Stochastic General Equilibrium (DSGE) models. On the basis of our review, we find that the structure of IAMs is currently the most used to represent the nexus complexity, while DSGE models focus only on single components but appear to be better suited to account for the randomization of exogenous shocks. CGE models and ABMs could be more effective on the side of the policy perspective. Indeed, the former can account for interlinkages across sectors and countries, while the latter can define theoretical frameworks that better approximate reality.
Signatures of Fractional Quantum Anomalous Hall States in Twisted MoTe2 Bilayer
Creators: name: Cai, Jiaqi
name: Anderson, Eric
name: Wang, Chong
name: Zhang, Xiaowei
name: Liu, Xiaoyu
name: Holtzmann, William
name: Zhang, Yinong
name: Fan, Fengren
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Ran, Ying
name: Cao, Ting
name: Fu, Liang
name: Xiao, Di
name: Yao, Wang
name: Xu, Xiaodong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The interplay between spontaneous symmetry breaking and topology can result in exotic quantum states of matter. A celebrated example is the quantum anomalous Hall (QAH) state, which exhibits an integer quantum Hall effect at zero magnetic field thanks to its intrinsic ferromagnetism. In the presence of strong electron-electron interactions, exotic fractional-QAH (FQAH) states at zero magnetic field can emerge. These states could host fractional excitations, including non-Abelian anyons - crucial building blocks for topological quantum computation. Flat Chern bands are widely considered as a desirable venue to realize the FQAH state. For this purpose, twisted transition metal dichalcogenide homobilayers in rhombohedral stacking have recently been predicted to be a promising material platform. Here, we report experimental signatures of FQAH states in 3.7-degree twisted MoTe2 bilayer. Magnetic circular dichroism measurements reveal robust ferromagnetic states at fractionally hole filled moiré minibands. Using trion photoluminescence as a sensor, we obtain a Landau fan diagram which shows linear shifts in carrier densities corresponding to the v=-2/3 and -3/5 ferromagnetic states with applied magnetic field. These shifts match the Streda formula dispersion of FQAH states with fractionally quantized Hall conductance of -2/3$e^2/h$ and -3/5$e^2/h$, respectively. Moreover, the v=-1 state exhibits a dispersion corresponding to Chern number -1, consistent with the predicted QAH state. In comparison, several non-ferromagnetic states on the electron doping side do not disperse, i.e., are trivial correlated insulators. The observed topological states can be further electrically driven into topologically trivial states. Our findings provide clear evidence of the long-sought FQAH states, putting forward MoTe2 moiré superlattices as a fascinating platform for exploring fractional excitations.
description: 15 pages, 4 figures, v2: extended data (6 figures) is added. Comments are welcome