cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Generalization of the Periodic Orbit Dividing Surface in Hamiltonian Systems with three or more degrees of freedom -- I
Creators: name: Katsanikas, M.
name: Wiggins, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We present a method that generalizes the periodic orbit dividing surface construction for Hamiltonian systems with three or more degrees of freedom. We construct a torus using as a basis a periodic orbit and we extend this to a $2n-2$ dimensional object in the $2n-1$ dimensional energy surface. We present our methods using benchmark examples for two and three degree of freedom Hamiltonian systems to illustrate the corresponding algorithm for this construction. Towards this end we use the normal form quadratic Hamiltonian system with two and three degrees of freedom. We found that the periodic orbit dividing surface can provide us the same dynamical information as the dividing surface constructed using normally hyperbolic invariant manifolds. This is significant because, in general, computations of normally hyperbolic invariant manifolds are very difficult in Hamiltonian systems with three or more degrees of freedom. However, our method avoids this computation and the only information that we need is the location of one periodic orbit.
description: 26 pages, 8 figures, accepted for publication in the International Journal of Bifurcation and Chaos
ARCADE: Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission
Creators: name: Kogut, A.
name: Fixsen, D.
name: Fixsen, S.
name: Levin, S.
name: Limon, M.
name: Lowe, L.
name: Mirel, P.
name: Seiffert, M.
name: Singal, J.
name: Lubin, P.
name: Wollack, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission (ARCADE) is a balloon-borne instrument designed to measure the temperature of the cosmic microwave background at centimeter wavelengths. ARCADE searches for deviations from a blackbody spectrum resulting from energy releases in the early universe. Long-wavelength distortions in the CMB spectrum are expected in all viable cosmological models. Detecting these distortions or showing that they do not exist is an important step for understanding the early universe. We describe the ARCADE instrument design, current status, and future plans.
description: 12 pages, 6 figures. Proceedings of the Fundamental Physics With CMB workshop, UC Irvine, March 23-25, 2006, to be published in New Astronomy Reviews
Tidal Deformability of Quark Stars with Repulsive Interactions
Creators: name: Albino, M. B.
name: Fariello, R.
name: Navarra, F. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In an early work, we applied a QCD-based equation of state to the study of the stellar structure of self-bound strange stars, obtaining sequences with maximum masses larger than two solar masses and radii ranging from 8 to 12 Km. In this work, we update the previous calculations and compare them with the most recent data, including the very recent determination of the mass and radius of the massive pulsar PSR J0740+6620 performed by the NICER and XMM-Newton Collaborations. Our equation of state is similar to the MIT bag model one, but it includes repulsive interactions, which turn out to be essential to reproduce the accumulated experimental information. We find that our EOS is still compatible with all astrophysical observations but the parameter window is now narrower.
description: 15 pages, 5 figures
Thermal dissipation in quantum turbulence
Creators: name: Kobayashi, Michikazu
name: Tsubota, Makoto
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The microscopic mechanism of thermal dissipation in quantum turbulence has been numerically studied by solving the coupled system involving the Gross-Pitaevskii equation and the Bogoliubov-de Gennes equation. At low temperatures, the obtained dissipation does not work at scales greater than the vortex core size. However, as the temperature increases, dissipation works at large scales and it affects the vortex dynamics. We successfully obtained the mutual friction coefficients of the vortex dynamics as functions of temperature, which can be applied to the vortex dynamics in dilute Bose-Einstein condensates.
description: 4 pages, 6 figures, submitted to APS
84 Χρόνια Εθνική Ομάδα Μπάσκετ Ανδρών: Αγώνες και Γεγονότα που επηρέασαν τη πορεία της
Creators: name: Λέντερης, Ιωάννης Διονυσίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εθνική Ομάδα Μπάσκετ
Μπάσκετ
Έκθεση
Greek National Basketball Team
Basket
Exhibition

description: Η διατριβή μου σχετίζεται με μια πρόταση έκθεσης για την ιστορία της εθνικής ομάδας μπάσκετ, μιας από τις πιο αναγνωρίσιμες αθλητικές ομάδες της χώρας. Ωστόσο, πέρα από τiς επιτυχίες η όχι μέσα στο γήπεδο, η Εθνική Ομάδα Μπάσκετ δεν είναι ανεξάρτητη στη χώρα και πολλές φορές υπήρξαν παράγοντες και γεγονότα που την επηρέασαν και συνεχίζουν να το κάνουν. Οι κυβερνητικές πολιτικές, τα οικονομικά δεδομένα καθώς και άλλοι κοινωνικοί παράγοντες επηρέασαν άμεσα ή έμμεσα το «ταξίδι» της είτε με θετικό είτε αρνητικό τρόπο ώστε να φτάσει σήμερα για να θεωρείται μία από τις ισχυρότερες ομάδες μπάσκετ παγκοσμίως. Υπάρχει λοιπόν μια παράλληλη αφήγηση του αθλητισμού και άλλων παραγόντων που την επηρέασαν. Η χρονολογική αφήγηση της έκθεσης ξεδιπλώνεται από τα πρώτα χρόνια του μπάσκετ στην Ελλάδα και τελειώνει με την τελευταία επίσημη εκδήλωση στην οποία συμμετείχε η ομάδα.
description: Αγγλική Περίληψη. My dissertation is related to a proposal for an exhibition for the history of the national basketball team, one of the most recognizable sports teams in the country. However, beyond the success or not inside the court, the National Basketball Team is not independent in the country and many times there have been factors and events that have influenced it and continue to do so. Government policies, economic data as well other social factors directly or indirectly influenced its «journey» either in a positive or negative way to reach today to be considered one of the strongest basketball teams worldwide. So there is a parallel narrative of sports and other factors that influenced it. The chronological narrative of the exhibition unfolds from the first years of basketball in Greece and ends with the last official event in which the team participated.
description: Σε συνεργασία με: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
The minimal model of fermionic dark matter
Creators: name: Kim, Yeong Gyun
name: Lee, Kang Young
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the minimal extension of the Standard Model with fermionic cold dark matter. The interactions between the dark matter and the Standard Model matters are described by the non-renormalizable dimension-5 term. We show that the measured relic abundance of the cold dark matter can be explained in our model and predict the direct detection cross section. The direct search of the dark matter provides severe constraints on the mass and coupling of the minimal fermionic dark matter with respect to the Higgs boson mass.
description: 6 pages, 2 figures
Musawwarat es Sufra Museum
Creators: name: Aldenhoven, Katharina
name: Hinterhuber, Veronica
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 15 (2004): Der Antike Sudan
Remote Monitoring of Patient Respiration with Mask Attachment -- A Pragmatic Solution for Medical Facilities
Creators: name: Koh, Vivian Ci Ai
name: Ang, Yi Yang
name: Ser, Wee
name: Tan, Rex Xiao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Remote monitoring of vital signs in infectious patients minimizes the risks of viral transmissions to healthcare professionals. Evidence indicates that donning face masks reduces the risk of viral transmissions and is now the norm in medical facilities. We propose attaching an acoustic-sensing device onto face masks to assist medical facilities in monitoring patients' respiration remotely. Usability and functionality studies of the modified face mask were evaluated on 16 healthy participants, who were blindfolded throughout the data collection. Around half of the participants noticed the difference between the modified and unmodified masks but they also reported there was no discomfort in using the modified mask. Respiratory rates of the participants were evaluated for one minute and the mean error of respiratory rate was found to be 2.0 +/- 1.3 breath per minute. As all participants were healthy, the wheeze detection algorithm was assessed by playing 176 wheezes and 176 normal breaths through a foam mannequin. The recordings were played at three different times to account for varying environmental noise. The overall accuracy of the wheeze detection algorithm was 91.9%. The current findings support and suggest the use of the mask attachment in medical facilities.
description: Published on Inventions, 10 pages
Additional file 1 of Gut microbiota is causally associated with poststroke cognitive impairment through lipopolysaccharide and butyrate
Creators: name: Wang, Huidi
name: Zhang, Mingsi
name: Li, Jie
name: Liang, Jianhai
name: Yang, Mengjia
name: Xia, Genghong
name: Ren, Yueran
name: Zhou, Hongwei
name: Wu, Qiheng
name: He, Yan
name: Yin, Jia
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Neuroscience
subject: Chemical Sciences not elsewhere classified
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Hematology

description: Additional file 1: Table S1. Characteristics of the patients. Table S2. Multivariate logistic regression analyses.
Manifestations of non-zero Majorana CP violating phases in oscillations of supernova neutrinos
Creators: name: Popov, Artem
name: Studenikin, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate effects of non-zero Dirac and Majorana CP violating phases on neutrino-antineutrino oscillations in a magnetic field of astrophysical environments. It is shown that in the presence of strong magnetic fields and dense matter, non-zero CP phases can induce new resonances in the oscillations channels $ν_e \leftrightarrow \barν_e$, $ν_e \leftrightarrow \barν_μ$ and $ν_e \leftrightarrow \barν_τ$. We also consider all other possible oscillation channels with $ν_μ$ and $ν_τ$ in the initial state. The resonances can potentially lead to significant phenomena in neutrino oscillations accessible for observation in experiments. In particular, we show that neutrino-antineutrino oscillations combined with Majorana-type CP violation can affect the $\barν_e$/$ν_e$ ratio for neutrinos coming from the supernovae explosion. This effect is more prominent for the normal neutrino mass ordering. The detection of supernovae neutrino fluxes in the future experiments, such as JUNO, DUNE and Hyper-Kamiokande, can give an insight into the nature of CP violation and, consequently, provides a tool for distinguishing the Dirac or Majorana nature of neutrinos.
description: 14 pages in LaTex, 8 figures
Όψεις της αθηναϊκής ζωής στο πεζογραφικό έργο του Γεράσιμου Βώκου της δεκαετίας του 1890
Creators: name: Λαζαρίδη, Δανάη Χαράλαμπου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Γεράσιμος Βώκος
Αστική πεζογραφία
Αθήνα
Gerasimos Vokos
Urban literature
Αthens

description: Ο στόχος που θέτει η παρούσα εργασία είναι η διερεύνηση όψεων της πρωτεύουσας στο πεζογραφικό έργο του Γεράσιμου Βώκου τη δεκαετία του 1890. Το corpus των εξεταζόμενων κειμένων συνίσταται σε έργα εκδομένα αλλά και ανέκδοτα, τα οποία είναι καρπός της στενής συνεργασίας που ανέπτυξε ο δημοσιογράφος-λογοτέχνης με τον ημερήσιο τύπο. Στο πρώτο μέρος επιχειρείται η παρουσίαση της πορείας που διέγραψε η έρευνα γύρω από την ελληνική αστική πεζογραφία της περιόδου και τίθενται ορισμένα ζητήματα ορισμού της λογοτεχνίας της πόλης. Ακολούθως, στο δεύτερο μέρος γίνεται απόπειρα ανάγνωσης και ερμηνείας των έργων του Βώκου υπό το πρίσμα των πολλαπλών εγγραφών του άστεως σε αυτά. Μέσα από την παρουσίαση αναδύεται, τελικά, η πρωτεϊκή ουσία της Αθήνας, η οποία ως αντικείμενο λογοτεχνικής αναπαράστασης δομείται συνεχώς κάτω από την επίδραση της συγγραφικής πρόθεσης και ιδεολογίας.
description: This paper aims to examine aspects of the Greek capital, Athens, as it concerns Gerasimos Vokos’ prose work in the 1890 decade. The corpus of relevant texts consists of pieces not only officially published in books but also of others, that remain published only in the daily press, which is the field that the reporter-writer was most active in. The first part presents the progress of the research on Greek urban literature of the period and tries to define the literary genre that focuses on the depiction of the city. The second part deals with an attempt to interpret Vokos’ work from the perspective of multiple reflection of the city life in it. Finally, through the whole dissertation there emerges the protean character of Athens, meaning that, as an object of literary representation, is being transformed under the impact of the author’s intention and ideology.
An attampt to measure the electron temperature of a Xenon Chloride excimer laser discharge plasma by Thomson scattering
Creators: name: Hughes, Michael K. Y.
Publisher: name: University of British Columbia
Year: 2008

description: An electronic timing system was developed so that a commercial Nd:YAG regenerative amplifier could be triggered remotely with a BNC cable and pushbutton switch. This system was used to accurately time a Xenon Chloride transverse discharge laser to the short, high power Nd:YAG pulse to within 5 ns. Attempts were made to determine the electron velocity distribution of the discharge plasma of this Xenon Chloride laser using the method of Thomson scattering. The Thomson scattering parameter a was 0.22. A short, 532 nm pulse was injected into the excimer laser and the backscattered light was analysed. The scattered beam was imaged onto the entrance slit of a spectrometer and the spectrally dispersed output was collected by either a streak camera or a photomultiplier array. The injection laser pulses were produced by amplifying the 100 Ps pulses from a modelocked Nd:YAG laser in a regenerative amplifier giving probe pulses of approximately 40 mJ in 100 Ps at the excimer laser. Aside from the signal intensity at shifted wavelengths which was measured to give an estimate of the electron temperature, the relative timing of the probe pulse to the excimer current was measured to give a time profile of the temperature. The injection pulse power and excimer laser current were also needed to ensure that results behaved as predicted in relation to these parameters. The temperature measurements proved to be impossible due to extremely high noise levels, a lack of resolution of the spectrometer and possibly laser heating effects.
Additional file 2 of BAMscale: quantification of next-generation sequencing peaks and generation of scaled coverage tracks
Creators: name: Pongor, Lorinc S.
name: Gross, Jacob M.
name: Vera Alvarez, Roberto
name: Murai, Junko
name: Jang, Sang-Min
name: Zhang, Hongliang
name: Redon, Christophe
name: Fu, Haiqing
name: Huang, Shar-Yin
name: Thakur, Bhushan
name: Baris, Adrian
name: Marino-Ramirez, Leonardo
name: Landsman, David
name: Aladjem, Mirit I.
name: Pommier, Yves
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Statistics
subject: FOS: Mathematics
subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 2. Fig. S1. Benchmarking and comparison of different tools using ATAC-seq data. A) Peak quantification performance using bedtools and BAMscale (1, 4 and 8 execution threads). B) Comparison of raw read counts between bedtools and BAMscale in six ATAC-seq samples. C) IGV screenshot of a peak overestimated by bedtools in all samples, where read pairs align to different chromosomes. Fig. S2. Colocalization of ATAC-seq peaks. Peaks with > threefold opening had increased colocalization with H3K4me3 and H3K9ac compared to peaks with weaker or no increase. Fig. S3. Changes in histone ChIP-seq signal between MV4-11 and MV4-11R cells. A) H3K27me3 signal decreased, B) H3K27ac signal increased, and C) H3K4me3 signal did not change in the MV4-11R cells compared to the MV4-11 cells. Fig. S4. Stranded and unstranded RNA-seq coverage tracks created with BAMscale. Fig. S5. Comparison of deposited END-seq and OK-seq data reprocessed with BAMscale.
Efficient steady state entanglement generation in strongly driven coupled qubits
Creators: name: Gramajo, Ana Laura
name: Domínguez, Daniel
name: Sánchez, María José
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on a mechanism to optimize the generation of steady-state entanglement in a system of coupled qubits driven by microwave fields. Due to the interplay between Landau-Zener-Stückerlberg pumping involving three levels and a subsequent fast relaxation channel, which is activated by tuning the qubits-reservoir couplings, a maximally entangled state can be populated. This mechanism does not require from the fine-tuning of multiphoton-resonances but depends on the sign of the qubit-qubit coupling. In particular, we find that by a proper design of the system parameters and the driving protocol, the two-qubits steady-state concurrence can attain values close to 1 in a wide range of driving amplitudes. Our results may be useful to gain further insight into entanglement control and manipulation in dissipative quantum systems exposed to strong driving.
description: 12 pages, 12 figures
Neuere Untersuchungen der Bestattungen im Wadi es-Sufra
Creators: name: Jeuthe, Clara
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 15 (2004): Der Antike Sudan
Phaseless auxiliary-field quantum Monte Carlo calculations with planewaves and pseudopotentials--applications to atoms and molecules
Creators: name: Suewattana, Malliga
name: Purwanto, Wirawan
name: Zhang, Shiwei
name: Krakauer, Henry
name: Walter, Eric J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The phaseless auxiliary-field quantum Monte Carlo (AF QMC) method [S. Zhang and H. Krakauer, Phys. Rev. Lett. 90, 136401 (2003)] is used to carry out a systematic study of the dissociation and ionization energies of second-row group 3A-7A atoms and dimers, Al, Si, P, S, Cl. In addition, the P_2 dimer is compared to the third-row As_2 dimer, which is also triply-bonded. This method projects the many-body ground state by means of importance-sampled random walks in the space of Slater determinants. The Monte Carlo phase problem, due to the electron-electron Coulomb interaction, is controlled via the phaseless approximation, with a trial wave function |Psi_T>. As in previous calculations, a mean-field single Slater determinant is used as |Psi_T>. The method is formulated in the Hilbert space defined by any chosen one-particle basis. The present calculations use a planewave basis under periodic boundary conditions with norm-conserving pseudopotentials. Computational details of the planewave AF QMC method are presented. The isolated systems chosen here allow a systematic study of the various algorithmic issues. We show the accuracy of the planewave method and discuss its convergence with respect to parameters such as the supercell size and planewave cutoff. The use of standard norm-conserving pseudopotentials in the many-body AF QMC framework is examined.
description: 12 pages, 6 figures
Fast Barycentric-Based Evaluation Over Spectral/hp Elements
Creators: name: Laughton, Edward
name: Zala, Vidhi
name: Narayan, Akil
name: Kirby, Robert M.
name: Moxey, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: As the use of spectral/$hp$ element methods, and high-order finite element methods in general, continues to spread, community efforts to create efficient, optimized algorithms associated with fundamental high-order operations have grown. Core tasks such as solution expansion evaluation at quadrature points, stiffness and mass matrix generation, and matrix assembly have received tremendousattention. With the expansion of the types of problems to which high-order methods are applied, and correspondingly the growth in types of numerical tasks accomplished through high-order methods, the number and types of these core operations broaden. This work focuses on solution expansion evaluation at arbitrary points within an element. This operation is core to many postprocessing applications such as evaluation of streamlines and pathlines, as well as to field projection techniques such as mortaring. We expand barycentric interpolation techniques developed on an interval to 2D (triangles and quadrilaterals) and 3D (tetrahedra, prisms, pyramids, and hexahedra) spectral/$hp$ element methods. We provide efficient algorithms for their implementations, and demonstrate their effectiveness using the spectral/$hp$ element library Nektar++.
description: 28 pages, 9 figures, 2 tables, submitted to Journal of Scientific Computing
Neue Erkenntnisse zur Wasserversorgung von Musawwarat es Sufra (I)
Creators: name: Scheibner, Thomas
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 15 (2004): Der Antike Sudan
Correlation between lepton flavor violation and B_{(d,s)} - \bar{B}_{(d,s)} mixing in SUSY GUT
Creators: name: Cheung, Kingman
name: Kang, Sin Kyu
name: Kim, C. S.
name: Lee, Jake
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the recent measurements of the B_s-\bar{B}_s mass difference from the D0 and CDF collaborations, we probe new physics effects in the B_q-\bar{B}_q mixing within the context of the supersymmetric grand unified model (SUSY GUT). We find that new physics effects in B_{s(d)}-\bar{B}_{s(d)} mixing lead to the correlated information in the branching fractions of the lepton flavor violating decays, which may serve as a test of the SUSY GUT. We also discuss the implication of such new physics effects on the quark-lepton complementarity in the neutrino mixings.
description: Added some remarks on RG effects on the GUT relations and corrected typos
On the size of Kakeya sets in finite fields
Creators: name: Dvir, Zeev
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Classical Analysis and ODEs (math.CA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 52C17

description: A Kakeya set is a subset of F^n, where F is a finite field of q elements, that contains a line in every direction. In this paper we show that the size of every Kakeya set is at least C_n * q^n, where C_n depends only on n. This improves the previously best lower bound for general n of ~q^{4n/7}.
description: Improved bound and added references
Direct optical excitation of a fullerene-incarcerated metal ion
Creators: name: Jones, Mark A G
name: Porfyrakis, Kyriakos
name: Briggs, G Andrew D
name: Taylor, Robert A
name: Ardavan, Arzhang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The endohedral fullerene Er3N@C80 shows characteristic 1.5 micron photoluminescence at cryogenic temperatures associated with radiative relaxation from the crystal-field split Er3+ 4I13/2 manifold to the 4I15/2 manifold. Previous observations of this luminescence were carried out by photoexcitation of the fullerene cage states leading to relaxation via the ionic states. We present direct non-cage-mediated optical interaction with the erbium ion. We have used this interaction to complete a photoluminescence-excitation map of the Er3+ 4I13/2 manifold. This ability to interact directly with the states of an incarcerated ion suggests the possibility of coherently manipulating fullerene qubit states with light.
Tore und Säulen
Creators: name: Eigner, Dieter
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 15 (2004): Der Antike Sudan
The MicroJansky Radio Galaxy Population
Creators: name: Barger, A. J.
name: Cowie, L. L.
name: Wang, W. -H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use highly spectroscopically complete observations of the radio sources from the VLA 1.4 GHz survey of the HDF-N region to study the faint radio galaxy population and its evolution. We spectrally classify the sources into four spectral types: absorbers, star formers, Seyfert galaxies, and broad-line AGNs, and we analyze their properties by type. We supplement the spectroscopic redshifts with photometric redshifts measured from the rest-frame UV to MIR spectral energy distributions. Using deep X-ray observations of the field, we do not confirm the existence of an X-ray-radio correlation for star-forming galaxies. We also do not observe any correlations between 1.4 GHz flux and R magnitude or redshift. We find that the radio powers of the host galaxies rise dramatically with increasing redshift, while the optical properties of the host galaxies show at most small changes. Assuming that the locally determined FIR-radio correlation holds at high redshifts, we estimate total FIR luminosities for the radio sources. We note that the FIR luminosity estimates for any radio-loud AGNs will be overestimates. Considering only the radio sources with quasar-like bolometric luminosities, we find a maximum ratio of candidate highly-obscured AGNs to X-ray-luminous (>10^42 ergs/s) sources of about 1.9. We use source-stacking analyses to measure the X-ray surface brightnesses of various X-ray and radio populations. We find the contributions to the 4-8 keV light from our candidate highly-obscured AGNs to be very small, and hence these sources are unable to account for the light that has been suggested may be missing at these energies.
description: 20 pages, Accepted by The Astrophysical Journal (scheduled for 1 Jan 2007), color figures 2 and 3 can be found at http://www.astro.wisc.edu/~barger/radiopaper.html
Braneworlds in six dimensions: new models with bulk scalars
Creators: name: Koley, Ratna
name: Kar, Sayan
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Six dimensional bulk spacetimes with 3-- and 4--branes are constructed using certain non--conventional bulk scalars as sources. In particular, we investigate the consequences of having the phantom (negative kinetic energy) and the Brans--Dicke scalar in the bulk while obtaining such solutions. We find geometries with 4--branes with a compact on--brane dimension (hybrid compactification) which may be assumed to be small in order to realize a 3--brane world. On the other hand, we also construct, with similar sources, bulk spacetimes where a 3--brane is located at a conical singularity. Furthermore, we investigate the issue of localization of matter fields (scalar, fermion, graviton, vector) on these 3-- and 4--branes and conclude with comments on our six dimensional models.
description: 24 pages, 1 figure, Replaced to match version published in Class. Quant. Grav
Pygmy resonances probed with electron scattering
Creators: name: Bertulani, C. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Pygmy resonances in light nuclei excited in electron scattering are discussed. These collective modes will be explored in future electron-ion colliders such as ELISe/FAIR (spokesperson: Haik Simon - GSI). Response functions for direct breakup are explored with few-body and hydrodynamical models, including the dependence upon final state interactions.
description: Invited talk at the 2nd Int. Conf. on "Collective Motion in Nuclei under Extreme Conditions" (COMEX 2), June 20 - 23, 2006, Sankt Goar, Germany, to be published in Nuclear Physics A
Nuclear spin population and its control toward initialization using an all-electrical sub-micron scale nuclear magnetic resonance device
Creators: name: Ota, T.
name: Yusa, G.
name: Kumada, N.
name: Miyashita, S.
name: Hirayama, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the nuclear spin population in a GaAs quantum well structure and demonstrate its initialization using an all-electrical nuclear magnetic resonance (NMR) device. In our device, nuclear spins are dynamically polarized in a sub-micron scale region defined by split gates. The nuclear spin populations under various polarization conditions are estimated from resistively-detected pulsed NMR spectra. We find that nuclear spin populations are determined by electron spin configurations. By applying radio frequency pulses to the strongly polarized nuclear spins, we demonstrate the creation of two-qubit effective pure states, which is a crucial step toward NMR quantum computation.
description: 6 pages, 3 figures, Accepted for publication in App. Phys. Lett
The structure of electrical double layer formed on the kaolinite surface in the mixed system of cationic polyacrylamide and lead(II) ions
Creators: name: Fijałkowska, Gracja
name: Wiśniewska, Małgorzata
name: Szewczuk-Karpisz, Katarzyna
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: adsorption, zeta potential, kaolinite, electrical double layer, surface charge density, Pb(II) ions, cationic PAM

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
Effective action of string theory at order $α'$ in the presence of boundary
Creators: name: Garousi, Mohammad R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, using the assumption that the string theory effective action at the critical dimension is background independent, the classical on-shell effective action of the bosonic string theory at order $α'$ in a spacetime manifold without boundary has been reproduced, up to an overall parameter, by imposing the $O(1,1)$ symmetry when the background has a circle. In the presence of the boundary, we consider a background which has boundary and a circle such that the unit normal vector of the boundary is independent of the circle. Then the $O(1,1)$ symmetry can fix the bulk action without using the lowest order equation of motion. Moreover, the above constraints and the constraint from the principle of the least action in the presence of boundary can fix the boundary action, up to five boundary parameters. In the least action principle, we assume that not only the values of the massless fields but also the values of their first derivatives are arbitrary on the boundary. We have also observed that the cosmological/one-dimensional reduction of the leading order action in the presence of the Hawking-Gibbons boundary term, produces zero boundary action. Imposing this as another constraint on the boundary couplings at order $α'$, we find the boundary action up to two parameters. For a specific value for these two parameters, the gravity couplings in the boundary become the Chern-Simons gravity plus another term which has the Laplacian of the extrinsic curvature.
description: 30 pages, Latex file, no figure; v7:extend the cosmological reduction to the general one-dimensional reduction which includes timelike or spacelike boundary
Kinetics of the collisionless expansion of spherical nanoplasmas
Creators: name: Peano, F.
name: Peinetti, F.
name: Mulas, R.
name: Coppa, G.
name: Silva, L. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The collisionless expansion of spherical plasmas composed of cold ions and hot electrons is analyzed using a novel kinetic model, with special emphasis on the influence of the electron dynamics. Simple, general laws are found, relating the relevant expansion features to the initial conditions of the plasma, determined from a single dimensionless parameter. A transition is identified in the behavior of the ion energy spectrum, which is monotonic only for high electron temperatures, otherwise exhibiting a local peak far from the cutoff energy.
description: 10 pages, 6 figures, to appear in Physical Review Letters
Aspects of Puff Field Theory
Creators: name: Ganor, Ori J.
name: Hashimoto, Akikazu
name: Jue, Sharon
name: Kim, Bom Soo
name: Ndirango, Anthony
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe some features of the recently constructed "Puff Field Theory," and present arguments in favor of it being a field theory decoupled from gravity. We construct its supergravity dual and calculate the entropy of this theory in the limit of large 't Hooft coupling. We also determine the leading irrelevant operator that governs its deviation from N=4 super Yang-Mills theory.
description: 31 pages, 1 figure
Chandra probes the X-ray variability of M51 ULX-7: evidence of propeller transition and X-ray dips on orbital periods
Creators: name: Vasilopoulos, G.
name: Koliopanos, F.
name: Haberl, F.
name: Treiber, H.
name: Brightman, M.
name: Earnshaw, H. P.
name: Gúrpide, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the temporal properties of the ULX pulsar M51 ULX-7 inferred from the analysis of the 2018-2020 Swift/XRT monitoring data and archival Chandra data obtained over a period of 33 days in 2012. We find an extended low flux state, which might be indicative of propeller transition, lending further support to the interpretation that the NS is rotating near equilibrium. Alternatively, this off state could be related to a variable super-orbital period. Moreover, we report the discovery of periodic dips in the X-ray light curve that are associated with the binary orbital period. The presence of the dips implies a configuration where the orbital plane of the binary is closer to an edge on orientation, and thus demonstrates that favorable geometries are not necessary in order to observe ULX pulsars.These characteristics are similar to those seen in prototypical X-ray pulsars like Her X-1 and SMC X-1 or other ULX pulsars like NGC 5907 ULX1.
description: 11 pages, 5 figures, Accepted to APJ
Generalized geometry, equivariant $\bar{\partial}\partial$-lemma, and torus actions
Creators: name: Lin, Yi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C15, 53C55, 53D20

description: In this paper we first consider the Hamiltonian action of a compact connected Lie group on an $H$-twisted generalized complex manifold $M$. Given such an action, we define generalized equivariant cohomology and generalized equivariant Dolbeault cohomology. If the generalized complex manifold $M$ satisfies the $\bar{\partial}\partial$-lemma, we prove that they are both canonically isomorphic to $(S\g^*)^G\otimes H_H(M)$, where $(S\g^*)^G$ is the space of invariant polynomials over the Lie algebra $\g$ of $G$, and $H_H(M)$ is the $H$-twisted cohomology of $M$. Furthermore, we establish an equivariant version of the $\bar{\partial}\partial$-lemma, namely $\bar{\partial}_G\partial$-lemma, which is a direct generalization of the $d_Gδ$-lemma for Hamiltonian symplectic manifolds with the Hard Lefschetz property. Second we consider the torus action on a compact generalized Kähler manifold which preserves the generalized Kähler structure and which is equivariantly formal. We prove a generalization of a result of Carrell and Lieberman in generalized Kähler geometry. We then use it to compute the generalized Hodge numbers for non-trivial examples of generalized Kähler structures on $\C¶^n$ and $\CP^n$ blown up at a fixed point.
description: to appear in the Journal of Geometry and Physics, 27 pages, a few typos and small mistakes corrected, added a few more references
Bericht über die archäologischen Untersuchungen im Hof 120 der Großen Anlage von Musawwarat es Sufra
Creators: name: Karberg, Tim
Publisher: name: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V.
Year: 2021

description: Der Antike Sudan. Mitteilungen der Sudanarchäologischen Gesellschaft zu Berlin e. V., Nr. 15 (2004): Der Antike Sudan
Grammatical elicitation: Verb paradigms
Creators: name: Palacio, Frank
name: Robertson, Allegra
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: cab

description: Wraps up odds and ends concerning verb paradigms. Verbs are elicited with positive and negative polarity, and in declarative and interrogative moods, and with a variety of tense-aspect-modality values.
Grammatical elicitation: Verb paradigms
Creators: name: Palacio, Frank
name: Björklund, Anna
name: Dabkowski, Maksymilian
name: Elias, Alexander
name: López Márquez, Wendy
name: Michael, Lev
name: Montaño Ramírez, Tzintia
name: Robertson, Allegra
name: Robinson, Dakota
name: Wellstood, Zachary
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: cab

description: Includes grammaticality judgements and elicited dialogues focused on stative and active verbs in (mainly) future perfect and progressive contexts. Verbs are elicited with positive and negative polarity, and in declarative and interrogative moods.
All-Order Quartic Couplings in Highly Symmetric D-brane-Anti-D-brane Systems
Creators: name: Hatefi, Ehsan
name: Sundell, Per
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute six-point string amplitudes for the scattering of one closed string Ramond-Ramond state, two tachyons, and two gauge fields in the worldvolume of D-brane-anti-D-brane systems in the Type II superstring theories. From the resulting S-matrix elements, we read off the precise form of the couplings, including their exact numerical coefficients, of two tachyons and two gauge fields in the corresponding highly symmetric effective field theory (EFT) Lagrangian in the worldvolume of D-brane-Anti-D-brane to all orders in $α'$, which modify and complete previous proposals. We verify that the EFT reproduces the infinite collection of stringy gauge field singularities in dual channels. Inspired by interesting similarities between the all-order highly symmetric EFTs and holographic duals of Vasiliev's higher spin gravities à là Nilsson and Vasiliev, we make a proposal for tensionless limits of D-brane-anti-D-brane systems.
description: V4: clarifications added. Published version in JHEP
Metabolic remodeling in hiPSC-derived myofibers carrying the m.3243A>G mutation.
Creators: name: Valdebenito, Gabriel E
name: Chacko, Anitta R
name: Chung, Chih-Yao
name: Sheshadri, Preethi
name: Chi, Haoyu
name: O'Callaghan, Benjamin
name: Madej, Monika J
name: Houlden, Henry
name: Rouse, Hannah
name: Morales, Valle
name: Bianchi, Katiuscia
name: Tedesco, Francesco Saverio
name: Pitceathly, Robert DS
name: Duchen, Michael R
Publisher: name: The Francis Crick Institute
Year: 2025
Subjects: classificationCode: Stem Cells
subject: Stem Cells
classificationCode: Neurosciences
subject: Neurosciences
subject: FOS: Clinical medicine
classificationCode: Human Biology & Physiology
subject: Human Biology & Physiology
classificationCode: Microfabrication & Bioengineering
subject: Microfabrication & Bioengineering
classificationCode: Cell Biology
subject: Cell Biology

description: Mutations in mitochondrial DNA cause severe multisystem disease frequently associated with muscle weakness. The m.3243A>G mutation is the major cause of mitochondrial encephalomyopathy lactic acidosis and stroke-like episodes (MELAS). Experimental models that recapitulate the disease phenotype in vitro for disease modeling or drug screening are very limited. We have therefore generated hiPSC-derived muscle fibers with variable heteroplasmic mtDNA mutation load without significantly affecting muscle differentiation potential. The cells exhibit physiological characteristics of muscle fibers and show a well-organized myofibrillar structure. In cells carrying the m.3243A>G mutation, the mitochondrial membrane potential and oxygen consumption were reduced in relation to the mutant load. We have shown through proteomic, phosphoproteomic, and metabolomic analyses that the m.3243A>G mutation variably affects the cell phenotype in relation to the mutant load. This variation is reflected by an increase in the NADH/NAD+ ratio, which in turn influences key nutrient-sensing pathways in the myofibers. This model enables a detailed study of the impact of the mutation on cellular bioenergetics and on muscle physiology with the potential to provide a platform for drug screening.
DAN-Net: Dual-Domain Adaptive-Scaling Non-local Network for CT Metal Artifact Reduction
Creators: name: Wang, Tao
name: Xia, Wenjun
name: Huang, Yongqiang
name: Sun, Huaiqiang
name: Liu, Yan
name: Chen, Hu
name: Zhou, Jiliu
name: Zhang, Yi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Metal implants can heavily attenuate X-rays in computed tomography (CT) scans, leading to severe artifacts in reconstructed images, which significantly jeopardize image quality and negatively impact subsequent diagnoses and treatment planning. With the rapid development of deep learning in the field of medical imaging, several network models have been proposed for metal artifact reduction (MAR) in CT. Despite the encouraging results achieved by these methods, there is still much room to further improve performance. In this paper, a novel Dual-domain Adaptive-scaling Non-local network (DAN-Net) for MAR. We correct the corrupted sinogram using adaptive scaling first to preserve more tissue and bone details as a more informative input. Then, an end-to-end dual-domain network is adopted to successively process the sinogram and its corresponding reconstructed image generated by the analytical reconstruction layer. In addition, to better suppress the existing artifacts and restrain the potential secondary artifacts caused by inaccurate results of the sinogram-domain network, a novel residual sinogram learning strategy and nonlocal module are leveraged in the proposed network model. In the experiments, the proposed DAN-Net demonstrates performance competitive with several state-of-the-art MAR methods in both qualitative and quantitative aspects.
description: 29 pages, 11 figures
Mechanical principles of dynamic terrestrial self-righting using wings
Creators: name: Li, Chen
name: Kessens, Chad C.
name: Fearing, Ronald S.
name: Full, Robert J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: Terrestrial animals and robots are susceptible to flipping-over during rapid locomotion in complex terrains. However, small robots are less capable of self-righting from an upside-down orientation compared to small animals like insects. Inspired by the winged discoid cockroach, we designed a new robot that opens its wings to self-right by pushing against the ground. We used this robot to systematically test how self-righting performance depends on wing opening magnitude, speed, and asymmetry, and modeled how kinematic and energetic requirements depend on wing shape and body/wing mass distribution. We discovered that the robot self-rights dynamically using kinetic energy to overcome potential energy barriers, that larger and faster symmetric wing opening increases self-righting performance, and that opening wings asymmetrically increases righting probability when wing opening is small. Our results suggested that the discoid cockroach's winged self-righting is a dynamic maneuver. While the thin, lightweight wings of the discoid cockroach and our robot are energetically sub-optimal for self-righting compared to tall, heavy ones, their ability to open wings saves them substantial energy compared to if they had static shells. Analogous to biological exaptations, our study provided a proof-of-concept for terrestrial robots to use existing morphology in novel ways to overcome new locomotor challenges.