cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Die Teilung des Bachschen Musikaliennachlasses und die Thomana-Stimmen
Creators: name: Glöckner, Andreas
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Bei der Teilung des Bachschen Musikaliennachlasses erbte Anna Magdalena Bach die Stimmensätze zum zweiten Kantatenjahrgang (Choralkantaten). Noch bevor die Witwe ihre Handschriften Anfang 1750 der Thomasschule zu Leipzig übereignete, ließ sie dafür neue Titelumschläge von Angehörigen aus dem engsten Familienkreis anfertigen. Aus der Identifizierung der Titelblattschreiber und weiteren Zusammenhängen ergibt sich September 1750 als Terminus ad quem für die Erbteilung. (Autor, Quelle: Bibliographie des Musikschrifttums online)
description: Bach-Jahrbuch, Bd. 80 (1994)
Soft X-ray characterisation of the long term properties of Supergiant Fast X-ray Transients
Creators: name: Romano, P.
name: Ducci, L.
name: Mangano, V.
name: Esposito, P.
name: Bozzo, E.
name: Vercellone, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform the first high-sensitivity soft X-ray long-term monitoring with Swift/XRT of three relatively unexplored Supergiant Fast X-ray Transients (SFXTs), IGR J08408-4503, IGR J16328-4726, and IGR J16465-4507, whose hard X-ray duty cycles are the lowest measured among the SFXT sample, and compare their properties with those of the prototypical SFXTs. The behaviour of J08408 and J16328 resembles that of other SFXTs, and it is characterized by a relatively high inactivity duty cycle (IDC) and pronounced dynamic range (DR) in the X-ray luminosity. Like the SFXT prototypes, J08408 shows two distinct populations of flares, the first one associated with the brightest outbursts ($L_{\rm X}\gtrsim 10^{35-36}$ erg s$^{-1}$), the second one comprising less bright events with $L_{\rm X}\lesssim$10$^{35}$ erg s$^{-1}$. This double-peaked distribution seems to be a ubiquitous feature of the extreme SFXTs. The lower DR of J16328 suggests it is an intermediate SFXT. We find J16465 is characterized by IDC$\sim$5% and DR$\sim$40, reminiscent of classical supergiant HMXBs. The duty cycles measured with XRT are found to be comparable with those reported previously by BAT and INTEGRAL, when the higher limiting sensitivities of these instruments are taken into account and sufficiently long observational campaigns are available. We prove that no clear correlation exists between the duty cycles of the SFXTs and their orbital periods, which makes it difficult to interpret the SFXT peculiar variability by only using arguments related to the properties of supergiant star winds. Our findings favour the idea that a correct interpretation of the SFXT phenomenology requires a mechanism to strongly reduce the mass accretion rate onto the compact object during most of its orbit around the companion, as proposed in a number of theoretical works. [Abridged]
description: Accepted for publication in Astronomy and Astrophysics. 18 pages, 8 figures, 8 tables
Midregional pro-adrenomedullin plasma concentrations are blunted in severe preeclampsia
Creators: name: Matson, B.C.
name: Valdar, W.
name: Grotegut, C.A.
name: Murtha, A.P.
name: Corty, R.W.
name: Karpinich, N.O.
name: Caron, K.M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Levels of the peptide hormone adrenomedullin (AM) are elevated during normal pregnancy, but whether this differs during complications of pregnancy remains unresolved. AM can be quantified by measuring its preprohormone byproduct, midregional pro-adrenomedullin (MR-proADM). MR-pro ADM has shown prognostic value as a biomarker of heart failure, sepsis, and community-acquired pneumonia. Given the relevance of AM to pregnancy, we tested the hypothesis that MR-proADM provides a biomarker for preeclampsia. We find that MR-proADM plasma concentrations are blunted in severe preeclampsia and that MR-proADM is similarly effective as established biomarkers endoglin and placental growth factor at discriminating patients with severe preeclampsia from controls.
Tomography of Spatial Mode Detectors
Creators: name: Bobrov, Ivan
name: Kovlakov, Egor
name: Markov, Anton
name: Straupe, Stanislav
name: Kulik, Sergey
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Transformation and detection of photons in higher-order spatial modes usually requires complicated holographic techniques. Detectors based on spatial holograms suffer from non-idealities and should be carefully calibrated. We report a novel method for analyzing the quality of projective measurements in spatial mode basis inspired by quantum detector tomography. It allows us to calibrate the detector response using only gaussian beams. We experimentally investigate the inherent inaccuracy of the existing methods of mode transformation and provide a full statistical reconstruction of the POVM (positive operator valued measure) elements for holographic spatial mode detectors.
description: 9 pages, 4 figures
CLE Peptides can Negatively Regulate Protoxylem Vessel Formation via Cytokinin Signaling
Creators: name: Fukuda, Hiroo
name: Kieber, Joseph J.
name: Hirakawa, Yuki
name: Kondo, Yuki
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Cell–cell communication is critical for tissue and organ development. In plants, secretory CLAVATA3/EMBRYO SURROUNDING REGION-related (CLE) peptides function as intercellular signaling molecules in various aspects of tissue development including vascular development. However, little is known about intracellular signaling pathways functioning in vascular development downstream of the CLE ligands. We show that CLE peptides including CLE10, which is preferentially expressed in the root vascular system, inhibit protoxylem vessel formation in Arabidopsis roots. GeneChip analysis displayed that CLE10 peptides repressed specifically the expression of two type-A Arabidopsis Response Regulators (ARRs), ARR5 and ARR6, whose products act as negative regulators of cytokinin signaling. The arr5 arr6 roots exhibited defective protoxylem vessel formation. These results indicate that CLE10 inhibits protoxylem vessel formation by suppressing the expression of type-A ARR genes including ARR5 and ARR6. This was supported by the finding that CLE10 did not suppress protoxylem vessel formation in a background of arr10 arr12, a double mutant of type-B ARR genes. Thus, our results revealed cross-talk between CLE signaling and cytokinin signaling in protoxylem vessel formation in roots. Taken together with the indication that cytokinin signaling functions downstream of the CLV3/WUS signaling pathway in the shoot apical meristem, the cross-talk between CLE and cytokinin signaling pathways may be a common feature in plant development.
cry1 and GPA1 signaling genetically interact in hook opening and anthocyanin synthesis in Arabidopsis
Creators: name: Fox, Ana R.
name: Jones, Alan M.
name: Mazzella, María A.
name: Casal, Jorge J.
name: Muschietti, Jorge P.
name: Soto, Gabriela C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: While studying blue light-independent effects of cryptochrome 1 (cry1) photoreceptor, we observed premature opening of the hook in cry1 mutants grown in complete darkness, a phenotype that resembles the one described for the heterotrimeric G-protein α subunit (GPA1) null mutant gpa1. Both cry1 and gpa1 also showed reduced accumulation of anthocyanin under blue light. These convergent gpa1 and cry1 phenotypes required the presence of sucrose in the growth media and were not additive in the cry1 gpa1 double mutant, suggesting context-dependent signaling convergence between cry1 and GPA1 signaling pathways. Both, gpa1 and cry1 mutants showed reduced GTP-binding activity. The cry1 mutant showed wild-type levels of GPA1 mRNA or GPA1 protein. However, an anti-transducin antibody (AS/7) typically used for plant Gα proteins, recognized a 54 kDa band in the wild type but not in gpa1 and cry1 mutants. We propose a model where cry1-mediated post-translational modification of GPA1 alters its GTP-binding activity.
Effective field theory for radiative corrections to charged-current processes I: Vector coupling
Creators: name: Cirigliano, Vincenzo
name: Dekens, Wouter
name: Mereghetti, Emanuele
name: Tomalak, Oleksandr
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study radiative corrections to low-energy charged-current processes involving nucleons, such as neutron beta decay and (anti)neutrino-nucleon scattering within a top-down effective-field-theory approach. We first match the Standard Model to the low-energy effective theory valid below the weak scale and, using renormalization group equations with anomalous dimensions of $\mathcal{O}(α, αα_s, α^2)$, evolve the resulting effective coupling down to the hadronic scale. Here, we first match to heavy-baryon chiral perturbation theory and subsequently, below the pion-mass scale, to a pionless effective theory, evolving the effective vector coupling with anomalous dimensions of $\mathcal{O}(α, α^2)$ all the way down to the scale of the electron mass, relevant for beta decays. We thus provide a new evaluation of the ``inner" radiative corrections to the vector coupling constant and to the neutron decay rate, discussing differences with the previous literature. Using our new result for the radiative corrections, we update the extraction of the Cabibbo-Kobayashi-Maskawa matrix element $V_{ud}$ from the neutron decay.
description: 40 pages, 3 figures
Signaling via histidine-containing phosphotransfer proteins in Arabidopsis (Plant Signaling and Behavior)
Creators: name: Kieber, Joseph J.
name: Hutchison, Claire E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The Arabidopsis genome encodes a number of proteins with similarity to two-component phosphorelay signaling elements, including hybrid receptor histidine kinases, two classes of response regulator proteins (type-A and type-B ARRs) and a family of six histidine-containing phosphotransfer proteins (AHPs), five of which contain a conserved His residue that is required for phosphorelay signaling. The current model for cytokinin signaling includes a multistep phosphorelay: three histidine kinases and at least five type-B ARRs have been shown to act as positive regulators of cytokinin signaling, while a number of type-A ARRs, and AHP6, act as negative regulators of the pathway. In our recent Plant Cell paper, we provided genetic evidence that at least four AHPs can act as positive regulators of cytokinin signaling, affecting responses to cytokinin in the root and the shoot. In this addendum, we discuss the role of AHPs in cytokinin signaling and speculate on their potential interactions with other signaling pathways in Arabidopsis.
Dimensionality and design of isotropic interactions that stabilize honeycomb, square, simple cubic, and diamond lattices
Creators: name: Jain, Avni
name: Errington, Jeffrey R.
name: Truskett, Thomas M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use inverse methods of statistical mechanics and computer simulations to investigate whether an isotropic interaction designed to stabilize a given two-dimensional (2D) lattice will also favor an analogous three-dimensional (3D) structure, and vice versa. Specifically, we determine the 3D ordered lattices favored by isotropic potentials optimized to exhibit stable 2D honeycomb (or square) periodic structures, as well as the 2D ordered structures favored by isotropic interactions designed to stabilize 3D diamond (or simple cubic) lattices. We find a remarkable `transferability' of isotropic potentials designed to stabilize analogous morphologies in 2D and 3D, irrespective of the exact interaction form, and we discuss the basis of this cross-dimensional behavior. Our results suggest that the discovery of interactions that drive assembly into certain 3D periodic structures of interest can be assisted by less computationally intensive optimizations targeting the analogous 2D lattices.
description: 22 pages (preprint version; includes supplementary information), 5 figures, 3 tables
Learning predictive checklists from continuous medical data
Creators: name: Makhija, Yukti
name: De Brouwer, Edward
name: Krishnan, Rahul G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Checklists, while being only recently introduced in the medical domain, have become highly popular in daily clinical practice due to their combined effectiveness and great interpretability. Checklists are usually designed by expert clinicians that manually collect and analyze available evidence. However, the increasing quantity of available medical data is calling for a partially automated checklist design. Recent works have taken a step in that direction by learning predictive checklists from categorical data. In this work, we propose to extend this approach to accomodate learning checklists from continuous medical data using mixed-integer programming approach. We show that this extension outperforms a range of explainable machine learning baselines on the prediction of sepsis from intensive care clinical trajectories.
description: Extended Abstract presented at Machine Learning for Health (ML4H) symposium 2022, November 28th, 2022, New Orleans, United States & Virtual, http://www.ml4h.cc, 7 pages
Charges, conserved quantities and fluxes in de Sitter spacetime
Creators: name: Poole, Aaron
name: Skenderis, Kostas
name: Taylor, Marika
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the definition of conserved quantities in asymptotically locally de Sitter spacetimes. One may define an analogue of holographic charges at future and past infinity and at other Cauchy surfaces $I_t$ as integrals over the intersection of timelike surfaces $C$ and the Cauchy surface $I_t$. In general, the charges $Q^t$ defined on the Cauchy surface $I_t$ depend on $C$, but if gravitational flux is absent the charges are independent of $C$. On the other hand, if there is a net gravitational flux entering or leaving the spacetime region bounded by $C_1, C_2$ and two Cauchy surfaces then $ΔQ^t(C_1, C_2) = Q^t(C_1)-Q^t(C_2)$ changes by the same amount.
description: v3:journal version
NDR proteins: lessons learned from Arabidopsis and animal cells prompt a testable hypothesis
Creators: name: Jones, Alan M.
name: Mudgil, Yashwanti
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: N-myc downregulated (NDR) genes were discovered more than fifteen years ago. Indirect evidence support a role in tumor progression and cellular differentiation, but their biochemical function is still unknown. Our detailed analyses on Arabidopsis NDR proteins (deisgnated NDR-like, NDL) show their involvement in altering auxin transport, local auxin gradients and expression level of auxin transport proteins. Animal NDL proteins may be involved in membrane recycling of E-cadherin and effector for the small GTPase. In light of these findings, we hypothesize that NDL proteins regulate vesicular trafficking of auxin transport facilitator PIN proteins by biochemically alterating the local lipid environment of PIN proteins.
Bachs Doppelchor "Nun ist das Heil und die Kraft" (BWV 50)
Creators: name: Hofmann, Klaus
Publisher: name: Bach-Jahrbuch
Year: 2018

description: J.S. Bachs orchesterbegleiteter Doppelchor Nun ist das Heil und die Kraft (BWV 50) ist nur in Abschriften von fremder Hand überliefert. Wichtigste Quelle und Grundlage aller übrigen Abschriften ist die Handschrift SBB P 136 von Carl Gotthelf Gerlach. Das Einzelstück gilt seit Spitta als Teil einer verschollenen Michaeliskantate. Um die Zuverlässigkeit der Überlieferung scheint die Bach-Forschung sich lange Zeit keine Gedanken gemacht zu haben. Der erste, der dies tat, war W[illiam] H. Scheide. (Karin Germerdonk, Quelle: Bibliographie des Musikschrifttums online) Vergleiche auch: William H. Scheide: "Nun ist das Heil und die Kraft" BWV 50: Doppelchörigkeit, Datierung und Bestimmung. BJ 1982, S. 81-96 Klaus Stein: Stammt "Nun ist das Heil und die Kraft" (BWV 50) von Johann Sebastian Bach? BJ 1999, S. 51-66 Joshua Rifkin: Siegesjubel und Satzfehler. Zum Problem von "Nun ist das Heil und die Kraft" (BWV 50). BJ 2000, S. 67-86 William H. Scheide: Nochmals BWV 50 "Nun ist das Heil und die Kraft". BJ 2001, S. 117-130
description: Bach-Jahrbuch, Bd. 80 (1994)
The FEI2-SOS5 pathway and CELLULOSE SYNTHASE 5 are required for cellulose biosynthesis in the Arabidopsis seed coat and affect pectin mucilage structure
Creators: name: Western, Tamara L.
name: Kieber, Joseph J.
name: Harpaz-Saad, Smadar
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: A common adaptation in angiosperms is the deposition of hydrophilic mucilage into the apoplast of seed coat epidermal cells during the course of their differentiation. Upon imbibition, seed mucilage, composed mainly of carbohydrates (i.e. pectins, hemicelluloses and glycans) expands rapidly, encapsulating the seed and aiding in seed dispersal and germination. The FEI1/FEI2 receptor-like kinases and the SOS5 extracellular GPI-anchored protein were previously shown to act on a pathway regulating cellulose biosynthesis during Arabidopsis root elongation. In the highlighted study, we demonstrated that FEI2 and SOS5 regulate the production of the cellulosic rays deposited across the inner adherent-layer of seed mucilage. Mutations in either fei2 or sos5 disrupted the formation of rays, which was associated with an increase in the soluble, outer layer of pectin mucilage and accompanied by a reduction in the inner adherent-layer. Mutations in CELLULOSE SYNTHASE 5 also led to reduced rays and mal-partitioning of the pectic component of seed mucilage, further establishing a structural role for cellulose in seed mucilage. Here, we show that FEI2 expressed from a CaMV 35S promoter complemented both root and seed mucilage defects of the fei1 fei2 double mutant. In contrast, expression of FEI1 from a 35S promoter complemented the root, but not the seed phenotype of the fei1 fei2 double mutant, suggesting that unlike in the root, FEI2 plays a unique and non-redundant role in the regulation of cellulose synthesis in seed mucilage. Altogether, these data suggest a novel role for cellulose in anchoring the pectic component of seed mucilage to the seed surface and indicate that the FEI2 protein has a function distinct from that of FEI1, despite the high sequence similarity of these RLKs.
Mechanisms of quasi-van der Waals epitaxy of 3D metallic nanoislands on suspended 2D materials
Creators: name: Reidy, Kate
name: Thomsen, Joachim Dahl
name: Lee, Hae Yeon
name: Zarubin, Vera
name: Yu, Yang
name: Wang, Baoming
name: Pham, Thang
name: Periwal, Priyanka
name: Ross, Frances M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Understanding structure at the interface between two-dimensional (2D) materials and 3D metals is crucial for designing novel 2D/3D heterostructures and improving the performance of many 2D material devices. Here, we quantify and discuss the 2D/3D interface structure and the 3D morphology in several materials systems. We first deposit facetted Au nanoislands on graphene and transition metal dichalcogenides, using measurements of the equilibrium island shape to determine values for the 2D/Au interface energies and examining the role of surface reconstructions, chemical identity, and defects on the grown structures. We then deposit the technologically relevant metals Ti and Nb under conditions where kinetic rather than thermodynamic factors govern growth. We describe a transition from dendritic to facetted islands as a function of growth temperature and discuss the factors determining island shape in these materials systems. Finally, we show that suspended 2D materials enable the fabrication of a novel type of 3D/2D/3D heterostructure and discuss the growth mechanism. We suggest that emerging nanodevices will utilize such versatile fabrication of 2D/3D heterostructures with well-characterized interfaces and morphologies.
The FRB20190520B Sightline Intersects Foreground Galaxy Clusters
Creators: name: Lee, Khee-Gan
name: Khrykin, Ilya S.
name: Simha, Sunil
name: Ata, Metin
name: Huang, Yuxin
name: Prochaska, J. Xavier
name: Tejos, Nicolas
name: Cooke, Jeff
name: Nagamine, Kentaro
name: Zhang, Jielai
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The repeating fast radio burst FRB20190520B is an anomaly of the FRB population thanks to its high dispersion measure (DM$=1205\,$pc/cc) despite its low redshift of $z_\mathrm{frb}=0.241$. This excess has been attributed to a large host contribution of $DM_{host}\approx 900\,$pc/cc, far larger than any other known FRB. In this paper, we describe spectroscopic observations of the FRB20190520B field obtained as part of the FLIMFLAM survey, which yielded 701 galaxy redshifts in the field. We find multiple foreground galaxy groups and clusters, for which we then estimated halo masses by comparing their richness with numerical simulations. We discover two separate $M_{halo} >10^{14}\,M_\odot$ galaxy clusters, at $z=0.1867$ and $z=0.2170$, respectively, that are directly intersected by the FRB sightline within their characteristic halo radius \rvir{}. Subtracting off their estimated DM contributions as well that of the diffuse intergalactic medium, we estimate a host contribution of $DM_{host}=430^{+140}_{-220}\,$pc/cc or $DM_{host}=280^{+140}_{-170}\,$pc/cc (observed frame) depending on whether we assume the halo gas extends to $r_{200}$ or $2\times r_{200}$. This significantly smaller $DM_{host}$ -- no longer the largest known value -- is now consistent with H$α$ emission measures of the host galaxy without invoking unusually high gas temperatures. Combined with the observed FRB scattering timescale, we estimate the turbulent fluctuation and geometric amplification factor of the scattering layer to be $\tilde{F} G\approx4.5 - 11\,(\mathrm{pc^2\;km})^{-1/3}$, suggesting most of the gas is close to the FRB host. This result illustrates the importance of incorporating foreground data for FRB analyses, both for understanding the nature of FRBs and to realize their potential as a cosmological probe.
description: Accepted by ApJL. Interactive figure included (link in text). Note numerical values have changed from v1
Cartoline dal passato. gli album di famiglia. Dalle memorie private alla memoria collettiva [poster]
Cartoline dal passato. gli album di famiglia. Dalle memorie private alla memoria collettiva [poster]
Creators: name: Davide, Diego
Publisher: name: D. Davide, "Cartoline dal passato. gli album di famiglia. Dalle memorie private alla memoria collettiva", in Metti la storia al lavoro! Seconda conferenza italiana di Public History. Pisa, 11-15 giugno 2018
Year: 2025

description: Nel tentativo di introdurre gli studenti allo studio e analisi delle fonti e alla loro storicizzazione, sono stati sollecitati a recuperare e condividere gli album fotografici di famiglia ai fini della realizzazione di un archivio digitale, aperto alla consultazione on line e all’implementazione da parte degli utenti.
The mass-metallicity and fundamental metallicity relations at z>2 using VLT and Subaru near-infrared spectroscopy of zCOSMOS galaxies
Creators: name: Maier, C.
name: Lilly, S. J.
name: Ziegler, B.
name: Contini, T.
name: Montero, E. Perez
name: Peng, Y.
name: Balestra, I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the local universe, there is good evidence that, at a given stellar mass M, the gas-phase metallicity Z is anti-correlated with the star formation rate (SFR) of the galaxies. It has also been claimed that the resulting Z(M,SFR) relation is invariant with redshift - the so-called Fundamental Metallicity Relation (FMR). Given a number of difficulties in determining metallicities, especially at higher redshifts, the form of the Z(M,SFR) relation and whether it is really independent of redshift is still very controversial. To explore this issue at z>2, we used VLT-SINFONI and Subaru-MOIRCS near-infrared spectroscopy of 20 zCOSMOS-deep galaxies at 2.12 galaxies of a given mass have much higher SFRs than the local SDSS galaxies. We find that the zCOSMOS galaxies are consistent with a non-evolving FMR if we use the physically-motivated formulation of the Z(M,SFR) relation from Lilly et al. (2003), but not if we use the empirical formulation of Mannucci et al. (2010).
description: Accepted for publication in ApJ (submitted to ApJ March 4, accepted June 20); 6 figures
Hand gesture recognition using 802.11ad mmWave sensor in the mobile device
Creators: name: Ren, Yuwei
name: Lu, Jiuyuan
name: Beletchi, Andrian
name: Huang, Yin
name: Karmanov, Ilia
name: Fontijne, Daniel
name: Patel, Chirag
name: Xu, Hao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We explore the feasibility of AI assisted hand-gesture recognition using 802.11ad 60GHz (mmWave) technology in smartphones. Range-Doppler information (RDI) is obtained by using pulse Doppler radar for gesture recognition. We built a prototype system, where radar sensing and WLAN communication waveform can coexist by time-division duplex (TDD), to demonstrate the real-time hand-gesture inference. It can gather sensing data and predict gestures within 100 milliseconds. First, we build the pipeline for the real-time feature processing, which is robust to occasional frame drops in the data stream. RDI sequence restoration is implemented to handle the frame dropping in the continuous data stream, and also applied to data augmentation. Second, different gestures RDI are analyzed, where finger and hand motions can clearly show distinctive features. Third, five typical gestures (swipe, palm-holding, pull-push, finger-sliding and noise) are experimented with, and a classification framework is explored to segment the different gestures in the continuous gesture sequence with arbitrary inputs. We evaluate our architecture on a large multi-person dataset and report > 95% accuracy with one CNN + LSTM model. Further, a pure CNN model is developed to fit to on-device implementation, which minimizes the inference latency, power consumption and computation cost. And the accuracy of this CNN model is more than 93% with only 2.29K parameters.
description: 6 pages, 12 figures
De-rendering 3D Objects in the Wild
Creators: name: Wimbauer, Felix
name: Wu, Shangzhe
name: Rupprecht, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: With increasing focus on augmented and virtual reality applications (XR) comes the demand for algorithms that can lift objects from images and videos into representations that are suitable for a wide variety of related 3D tasks. Large-scale deployment of XR devices and applications means that we cannot solely rely on supervised learning, as collecting and annotating data for the unlimited variety of objects in the real world is infeasible. We present a weakly supervised method that is able to decompose a single image of an object into shape (depth and normals), material (albedo, reflectivity and shininess) and global lighting parameters. For training, the method only relies on a rough initial shape estimate of the training objects to bootstrap the learning process. This shape supervision can come for example from a pretrained depth network or - more generically - from a traditional structure-from-motion pipeline. In our experiments, we show that the method can successfully de-render 2D images into a decomposed 3D representation and generalizes to unseen object categories. Since in-the-wild evaluation is difficult due to the lack of ground truth data, we also introduce a photo-realistic synthetic test set that allows for quantitative evaluation.
Unusual Shubnikov-de Haas oscillations in BiTeCl
Creators: name: Martin, C.
name: Suslov, A. V.
name: Buvaev, S.
name: Hebard, A. F.
name: Bugnon, P.
name: Berger, H.
name: Magrez, A.
name: Tanner, D. B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report measurements of Shubnikov-de Haas (SdH) oscillations in single crystals of BiTeCl at magnetic fields up to 31 T and at temperatures as low as 0.4 K. Two oscillation frequencies were resolved at the lowest temperatures, $F_{1}=65 \pm 4$ Tesla and $F_{2}=156 \pm 5$ Tesla. We also measured the infrared optical reflectance $\left(\cal R(ω)\right)$ and Hall effect; we propose that the two frequencies correspond respectively to the inner and outer Fermi sheets of the Rashba spin-split bulk conduction band. The bulk carrier concentration was $n_{e}\approx1\times10^{19}$ cm$^{-3}$ and the effective masses $m_{1}^{*}=0.20 m_{0}$ for the inner and $m_{2}^{*}=0.27 m_{0}$ for the outer sheet. Surprisingly, despite its low effective mass, we found that the amplitude of $F_{2}$ is very rapidly suppressed with increasing temperature, being almost undetectable above $T\approx4$ K.
Children’s peer talk in an early childhood centre as a vehicle for learning language
Creators: name: Carroll, Trevor
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Children’s peer talk has been shown to offer a supportive context for the development of vocabulary and oral language genres such as storytelling and argumentation (for example, Atkins-Burnett et al., 2017; Nicolopoulou et al., 2014; Zadunaisky Ehrlich & Blum-Kulka, 2010). In early childhood education and care (ECEC) settings in Australia, when children turn three years old their opportunities for interacting with peers unsupported by educators increase as they typically move into rooms with lower educator to child ratios. While previous research has focused on older children’s peer talk, little is known about the nature of three-year-old children’s spontaneous, naturally-occurring conversations with their peers in ECEC settings and their potential to promote language learning. Employing systemic functional linguistics (SFL) (Halliday & Matthiessen, 2004), a theory of language as a key social resource for making meaning and learning, this study examined the spontaneous talk of three-year-old children with similar-aged peers that occurred without guidance from an educator in an early childhood setting. Data were gathered through audio-visual recordings of eight focus children (aged between 3 years and 3 months and 3 years and 9 months), involved in everyday activities in an ECEC centre in regional New South Wales, Australia. Episodes of peer talk from these recordings were transcribed verbatim and analysed according to how children used language to represent experience (through process types) and interact with others (through grammatical mood and modality). Beyond the frequency of children’s process type and mood selections, the analysis revealed four main semantic patterns, or registers, of language use in the children’s conversations. The findings show that language plays a central role in three-year-old children’s ability to engage in play and construe different experiences in interaction with their peers. The children’s interactions were also found to be dynamic, with fluid changes in register. This study suggests that peer talk offers opportunities for using and learning language that differ from and therefore need to be intentionally complemented by those associated with educator-child talk.
Ein Quellenfund zur Entstehungsgeschichte der h-Moll-Messe
Creators: name: Wollny, Peter
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Der Artikel stellt eine in Gotha aufgefundene Abschrift des Eingangssatzes des Credo der h-Moll-Messe vor, die aus der Feder Johann Friedrich Agricolas stammt. Diese wird eingehend mit der Handschrift P 180 verglichen. Schließlich werden aus einigen Eigenheiten Folgerungen zur Genese von BWV 232 gezogen.
description: Bach-Jahrbuch, Bd. 80 (1994)
Direct observation of spin-polarised bulk bands in an inversion-symmetric semiconductor
Creators: name: Riley, J. M.
name: Mazzola, F.
name: Dendzik, M.
name: Michiardi, M.
name: Takayama, T.
name: Bawden, L.
name: Granerød, C.
name: Leandersson, M.
name: Balasubramanian, T.
name: Hoesch, M.
name: Kim, T. K.
name: Takagi, H.
name: Meevasana, W.
name: Hofmann, Ph.
name: Bahramy, M. S.
name: Wells, J. W.
name: King, P. D. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Methods to generate spin-polarised electronic states in non-magnetic solids are strongly desired to enable all-electrical manipulation of electron spins for new quantum devices. This is generally accepted to require breaking global structural inversion symmetry. In contrast, here we present direct evidence from spin- and angle-resolved photoemission spectroscopy for a strong spin polarisation of bulk states in the centrosymmetric transition-metal dichalcogenide WSe$_2$. We show how this arises due to a lack of inversion symmetry in constituent structural units of the bulk crystal where the electronic states are localised, leading to enormous spin splittings up to $\sim\!0.5$ eV, with a spin texture that is strongly modulated in both real and momentum space. As well as providing the first experimental evidence for a recently-predicted `hidden' spin polarisation in inversion-symmetric materials, our study sheds new light on a putative spin-valley coupling in transition-metal dichalcogenides, of key importance for using these compounds in proposed valleytronic devices.
description: 6 pages, 4 figures
Variational Quantum Computation of Molecular Linear Response Properties on a Superconducting Quantum Processor
Creators: name: Huang, Kaixuan
name: Cai, Xiaoxia
name: Li, Hao
name: Ge, Zi-Yong
name: Hou, Ruijuan
name: Li, Hekang
name: Liu, Tong
name: Shi, Yunhao
name: Chen, Chitong
name: Zheng, Dongning
name: Xu, Kai
name: Liu, Zhi-Bo
name: Li, Zhendong
name: Fan, Heng
name: Fang, Wei-Hai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Simulating response properties of molecules is crucial for interpreting experimental spectroscopies and accelerating materials design. However, it remains a long-standing computational challenge for electronic structure methods on classical computers. While quantum computers hold the promise to solve this problem more efficiently in the long run, existing quantum algorithms requiring deep quantum circuits are infeasible for near-term noisy quantum processors. Here, we introduce a pragmatic variational quantum response (VQR) algorithm for response properties, which circumvents the need for deep quantum circuits. Using this algorithm, we report the first simulation of linear response properties of molecules including dynamic polarizabilities and absorption spectra on a superconducting quantum processor. Our results indicate that a large class of important dynamical properties such as Green's functions are within the reach of near-term quantum hardware using this algorithm in combination with suitable error mitigation techniques.
description: 22 pages, 4 figures
Minimal influence of G-protein null mutations on ozone-induced changes in gene expression, foliar injury, gas exchange and peroxidase activity in Arabidopsis thaliana L.: Minimal influence of G-proteins on ozone responses
Creators: name: BOOKER, FITZGERALD
name: BURKEY, KENT
name: MORGAN, PATRICK
name: FISCUS, EDWIN
name: JONES, ALAN
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Ozone (O3) uptake by plants leads to an increase in reactive oxygen species (ROS) in the intercellular space of leaves and induces signalling processes reported to involve the membrane-bound heterotrimeric G-protein complex. Therefore, potential G-protein-mediated response mechanisms to O3 were compared between Arabidopsis thaliana L. lines with null mutations in the α- and β-subunits (gpa1-4, agb1-2 and gpa1-4/agb1-2) and Col-0 wild-type plants. Plants were treated with a range of O3 concentrations (5, 125, 175 and 300 nL L−1) for 1 and 2 d in controlled environment chambers. Transcript levels of GPA1, AGB1 and RGS1 transiently increased in Col-0 exposed to 125 nL L−1 O3 compared with the 5 nL L−1 control treatment. However, silencing of α and β G-protein genes resulted in little alteration of many processes associated with O3 injury, including the induction of ROS-signalling genes, increased leaf tissue ion leakage, decreased net photosynthesis and stomatal conductance, and increased peroxidase activity, especially in the leaf apoplast. These results indicated that many responses to O3 stress at physiological levels were not detectably influenced by α and β G-proteins.
Anisotropic resistivity and superconducting instability in ferroelectric metals
Creators: name: Zyuzin, Vladimir A.
name: Zyuzin, Alexander A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a theoretical model of a ferroelectric metal where spontaneous electric polarization coexists with the conducting electrons. In our model we adopt a scenario when conducting electrons interact with two soft transverse optical phonons, generalize it to the case when there is a spontaneous ferroelectric polarization in the system, and show that a linear coupling to the phonons emerges as a result. We find that this coupling results in anisotropic electric transport which has a transverse to the current voltage drop. Importantly, the obtained transverse component of the resistivity has distinct linear dependence with temperature. Moreover, we show that the coupling enhances superconducting transition temperature of the ferroelectric metal. We argue that our results help to explain recent experiments on ferroelectric strontium titanate, as well as provide new experimental signatures to look for.
description: 17 pages, 2 figures
Notizen zu Bachs Quodlibets
Creators: name: Schulze, Hans-Joachim
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Forkels 1802 veröffentlicher Bericht über das Improvisieren von "Simultan-Quodlibets" bei den Familientagen der Bachs wird mit einer ähnlichen Schilderung Reichardts aus dem Jahre 1774 verglichen. Die in der Literatur häufig diskutierte Notiz über die Volksliedzitate im Quodlibet der "Goldberg-Variationen" kann Caspar Siegfried Gähler (1747 - 1825) zugewiesen und um 1800 angesetzt werden. Der Text des lediglich fragmentarisch erhaltenen komponierten - nicht improvisierten - ("Sukzessiv"-) Quodlibets BWV 524 erlaubt einen Vergleich mit den von Gottsched für dieses Genre formulierten Kriterien. (Autor, Quelle: Bibliographie des Musikschrifttums online)
description: Bach-Jahrbuch, Bd. 80 (1994)
A chemical screen for suppressors of the avrRpm1-RPM1-dependent hypersensitive cell death response in Arabidopsis thaliana
Creators: name: Serrano, Mario
name: Kombrink, Erich
name: Dangl, Jeffery L.
name: Schulze-Lefert, Paul
name: Hubert, David A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Arabidopsis thalianaRPM1 encodes an intracellular immune sensor that conditions disease resistance to Pseudomonassyringae expressing the type III effector protein AvrRpm1. Conditional expression of this type III effector in a transgenic line carrying avrRpm1 under the control of a steroid-inducible promoter results in RPM1-dependent cell death that resembles the cell death response of the incompatible RPM1-avrRpm1 plant–bacterium interaction. This line was previously used in a genetic screen, which revealed two genes that likely function in the folding of pre-activation RPM1. We established a chemical screen for small molecules that suppress steroid-inducible and RPM1-avrRpm1-dependent cell death in Arabidopsis seedlings. Screening of a library comprising 6,800 compounds of natural origin identified two trichothecene-type mycotoxins, 4,15-diacetoxyscirpenol (DAS) and neosolaniol (NEO), which are synthesized by Fusarium and other fungal species. However, protein blot analysis revealed that DAS and NEO inhibit AvrRpm1 synthesis rather than suppress RPM1-mediated responses. This inhibition of translational activity likely explains the survival of the seedlings under screening conditions. Likewise, flg22-induced defense responses are also impaired at the translational, but not the transcriptional, level by DAS or NEO. Unexpectedly, both compounds not only prevented AvrRpm1 synthesis, but rather caused an apparent hyper-accumulation of RPM1 and HSP70. The hyper-accumulation phenotype is likely unrelated to the ribotoxic function of DAS and NEO and could be due to an inhibitory activity on the proteolytic machinery of Arabidopsis or elicitor-like activities of type A trichothecenes.Electronic supplementary materialThe online version of this article (doi:10.1007/s00425-010-1105-1) contains supplementary material, which is available to authorized users.
An Efficient and Accurate Memristive Memory for Array-based Spiking Neural Networks
Creators: name: Das, Hritom
name: Febbo, Rocco D.
name: Tushar, SNB
name: Chakraborty, Nishith N.
name: Liehr, Maximilian
name: Cady, Nathaniel
name: Rose, Garrett S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Memristors provide a tempting solution for weighted synapse connections in neuromorphic computing due to their size and non-volatile nature. However, memristors are unreliable in the commonly used voltage-pulse-based programming approaches and require precisely shaped pulses to avoid programming failure. In this paper, we demonstrate a current-limiting-based solution that provides a more predictable analog memory behavior when reading and writing memristive synapses. With our proposed design READ current can be optimized by about 19x compared to the 1T1R design. Moreover, our proposed design saves about 9x energy compared to the 1T1R design. Our 3T1R design also shows promising write operation which is less affected by the process variation in MOSFETs and the inherent stochastic behavior of memristors. Memristors used for testing are hafnium oxide based and were fabricated in a 65nm hybrid CMOS-memristor process. The proposed design also shows linear characteristics between the voltage applied and the resulting resistance for the writing operation. The simulation and measured data show similar patterns with respect to voltage pulse-based programming and current compliance-based programming. We further observed the impact of this behavior on neuromorphic-specific applications such as a spiking neural network
Johann Sebastian Bach als Schüler einer "deutschen Schule" in Eisenach?
Creators: name: Kaiser, Rainer
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Der Beitrag beleuchtet das Eisenacher Schulwesen zu Bachs Jugendzeit und geht dabei der Frage nach, wo Bach sein erforderliches Vorwissen für den ab 1693 belegten Besuch der Lateinschule erhalten haben könnte. Vergleiche auch: Martin Petzoldt: "Ut probus & doctus reddar." Zum Anteil der Theologie bei der Schulausbildung Johann Sebastian Bachs in Eisenach, Ohrdruf und Lüneburg. BJ 1985, S. 7-42 Hans-Joachim Schulze: Johann Christoph Bach (1671 bis 1721), "Organist und Schul Collega in Ohrdruf", Johann Sebastian Bachs erster Lehrer. BJ 1985, S. 55-81
description: Bach-Jahrbuch, Bd. 80 (1994)
Isolation and Identification of Intestinal CYP3A Inhibitors from Cranberry ( Vaccinium macrocarpon ) Using Human Intestinal Microsomes
Creators: name: Paine, Mary
name: Graf, Tyler
name: Brantley, Scott
name: Sy-Cordero, Arlene
name: Kim, Eunkyung
name: Oberlies, Nicholas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Cranberry juice is used routinely, especially among women and the elderly, to prevent and treat urinary tract infections. These individuals are likely to be taking medications concomitantly with cranberry juice, leading to concern about potential drug-dietary substance interactions, particularly in the intestine, which, along with the liver, is rich in expression of the prominent drug metabolizing enzyme, cytochrome P450 3A (CYP3A). Using a systematic in vitro-in vivo approach, a cranberry juice product was identified recently that elicited a pharmacokinetic interaction with the CYP3A probe substrate midazolam in 16 healthy volunteers. Relative to water, a cranberry juice inhibited intestinal first-pass midazolam metabolism. In vitro studies were initiated to identify potential enteric CYP3A inhibitors from cranberry via a bioactivity-directed fractionation approach involving dried whole cranberry [Vaccinium macrocarpon Ait. (Ericaceae)], midazolam, and human intestinal microsomes (HIM). Three triterpenes (maslinic acid, corosolic acid, and ursolic acid) were isolated. The inhibitory potency (IC50) of maslinic acid, corosolic acid, and ursolic acid was 7.4, 8.8, and <10 μM, respectively, using HIM as the enzyme source and was 2.8, 4.3, and <10 μM, respectively, using recombinant CYP3A4 as the enzyme source. These in vitro inhibitory potencies, which are within the range of those reported for two CYP3A inhibitory components in grapefruit juice, suggest that these triterpenes may have contributed to the midazolam-cranberry juice interaction observed in the clinical study.
Finite sample properties of power-law cross-correlations estimators
Creators: name: Kristoufek, Ladislav
Publisher: name: arXiv
Year: 2014
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We study finite sample properties of estimators of power-law cross-correlations -- detrended cross-correlation analysis (DCCA), height cross-correlation analysis (HXA) and detrending moving-average cross-correlation analysis (DMCA) -- with a special focus on short-term memory bias as well as power-law coherency. Presented broad Monte Carlo simulation study focuses on different time series lengths, specific methods' parameter setting, and memory strength. We find that each method is best suited for different time series dynamics so that there is no clear winner between the three. The method selection should be then made based on observed dynamic properties of the analyzed series.
description: 19 pages, 18 tables
Ein unbekanntes Autograph von Wilhelm Friedemann Bach
Creators: name: Wollny, Peter
Publisher: name: Bach-Jahrbuch
Year: 2018

description: Der Beitrag widmet sich zunächst der Frage nach einem "Spätwerk" W. F. Bachs und stellt anschließend eine in der Leipziger Musikbibliothek aufgefundene Quelle vor, die ein bis dato unbekanntes Klavierstück W. F. Bachs (BR A 62) enthält.
description: Bach-Jahrbuch, Bd. 80 (1994)