cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Magnetic moments of the spin-$\frac{3}{2}$ doubly charmed baryons in covariant baryon chiral perturbation theory
Creators: name: Shi, Rui-Xiang
name: Geng, Li-Sheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Inspired by the discovery of the spin-$\frac{1}{2}$ doubly charmed baryon $Ξ_{cc}^{++}$ and the subsequent theoretical studies of its magnetic moments, we study the magnetic moments of its spin-$\frac{3}{2}$ heavy quark spin symmetry counterparts, up to the next-to-leading order in covariant baryon chiral perturbation theory (BChPT) with the extended-on-mass-shell renormalization (EOMS) scheme. With the tree-level contributions fixed by the quark model while the two low energy constants (LECs) $C$ and $H$ controlling the loop contributions determined in two ways: the quark model (case 1) and lattice QCD simulations together with the quark model (case 2), we study the quark mass dependence of the magnetic moments and compare them with the predictions of the heavy baryon chiral perturbation theory (HB ChPT). It is shown that the difference is sizable in case 1, but not in case 2 due to the smaller LECs $C$ and $H$, similar to the case of spin-$\frac{1}{2}$ doubly charmed baryons. Second, we predict the magnetic moments of the spin-$\frac{3}{2}$ doubly charmed baryons and compare them with those of other approaches. The predicted magnetic moments in case 2 for the spin-$\frac{3}{2}$ doubly charmed baryons are closer to those of other approaches. In addition, the large differences in case 1 and case 2 for the predicted magnetic moments may indicate the inconsistency between the quark model and the lattice QCD simulations, which should be checked by future experimental or more lattice QCD data.
description: a sign problem corrected, and comparion with the lattice QCD data added
3-OGC: Catalog of gravitational waves from compact-binary mergers
Creators: name: Nitz, Alexander H.
name: Capano, Collin D.
name: Kumar, Sumit
name: Wang, Yi-Fan
name: Kastha, Shilpa
name: Schäfer, Marlin
name: Dhurkunde, Rahul
name: Cabero, Miriam
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the third Open Gravitational-wave Catalog (3-OGC) of compact-binary coalescences, based on the analysis of the public LIGO and Virgo data from 2015 through 2019 (O1, O2, O3a). Our updated catalog includes a population of 57 observations, including four binary black hole mergers that had not previously been reported. This consists of 55 binary black hole mergers and the two binary neutron star mergers GW170817 and GW190425. We find no additional significant binary neutron star or neutron star--black hole merger events. The most confident new detection is the binary black hole merger GW190925\_232845 which was observed by the LIGO Hanford and Virgo observatories with $\mathcal{P}_{\textrm{astro}} > 0.99$; its primary and secondary component masses are $20.2^{+3.9}_{-2.5} M_{\odot}$ and $15.6^{+2.1}_{-2.6} M_{\odot}$, respectively. We estimate the parameters of all binary black hole events using an up-to-date waveform model that includes both sub-dominant harmonics and precession effects. To enable deep follow-up as our understanding of the underlying populations evolves, we make available our comprehensive catalog of events, including the sub-threshold population of candidates, and the posterior samples of our source parameter estimates.
description: 17 pages, 5 figures, 4 tables, v3 updated to match ApJ accepted version. Supplementary material at https://github.com/gwastro/3-ogc
Pion decay model of TIBET-AS$γ$ PeV gamma-ray signal
Creators: name: Koldobskiy, Sergey
name: Neronov, Andrii
name: Semikoz, Dmitri
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Tibet-AS$γ$ collaboration has recently reported a measurement of diffuse $γ$-ray flux from the outer Galactic disk in the energy range reaching PeV. We complement this measurement with the Fermi/LAT measurement of the diffuse flux from the same sky region and study the pion decay model of the combined Fermi/LAT+Tibet-AS$γ$ spectrum. We find that within such a model the average cosmic ray spectrum in the outer Galactic disk has the same characteristic features as the local cosmic ray spectrum. In particular, it experiences a hardening at several hundred GV rigidity and a knee feature in the PV rigidity range. The slope of the average cosmic ray spectrum above the break is close to the locally observed slope of the helium spectrum $γ\simeq 2.5$, but is harder than the slope of the local proton spectrum in the same rigidity range. Although the combination of Fermi/LAT and Tibet-AS$γ$ data points to the presence of the knee in the average cosmic ray spectrum, the quality of the data is not yet sufficient for the study of knee shape and cosmic ray composition.
description: 5 pages, 2 figures
Elongation Index (Fiji script)
Creators: name: Guiet, Romain
name: Burri, Olivier
name: Girgin, Mehmet Ugur
name: Lutolf, Matthias
Publisher: name: Zenodo
Year: 2021
Subjects: ImageJ
Fiji
ActionBar
BIOP Basics
Organoid
Elongation index

description: A minimal example used in the articles (Girgin et al 2020 and Girgin et al 2021), with an example image, a Fiji script, a step-by-step document
The spin-flip phenomenon in supermassive black hole binary mergers
Creators: name: Gergely, László Á.
name: Biermann, Peter L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Massive merging black holes will be the primary sources of powerful gravitational waves at low frequency, and will permit to test general relativity with candidate galaxies close to a binary black hole merger. In this paper we identify the typical mass ratio of the two black holes but then show that the distance when gravitational radiation becomes the dominant dissipative effect (over dynamical friction) does not depend on the mass ratio. However the dynamical evolution in the gravitational wave emission regime does. For the typical range of mass ratios the final stage of the merger is preceded by a rapid precession and a subsequent spin-flip of the main black hole. This already occurs in the inspiral phase, therefore can be described analytically by post-Newtonian techniques. We then identify the radio galaxies with a super-disk as those in which the rapidly precessing jet produces effectively a powerful wind, entraining the environmental gas to produce the appearance of a thick disk. These specific galaxies are thus candidates for a merger of two black holes to happen in the astronomically near future.
description: v3: 36 pages, 1 figure; discussion on the validity of the model and estimates for the angular value of the spin-flip added to Section 5; v4: minor changes, 2 new references, published version
Spectral analysis of climate dynamics with operator-theoretic approaches
Creators: name: Froyland, Gary
name: Giannakis, Dimitrios
name: Lintner, Benjamin
name: Pike, Maxwell
name: Slawinska, Joanna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Earth's climate system is a classical example of a multiscale, multiphysics dynamical system with an extremely large number of active degrees of freedom, exhibiting variability on scales ranging from micrometers and seconds in cloud microphysics, to thousands of kilometers and centuries in ocean dynamics. Yet, despite this dynamical complexity, climate dynamics is known to exhibit coherent modes of variability. A primary example is the El Niño Southern Oscillation (ENSO), the dominant mode of interannual (3-5 yr) variability in the climate system. The objective and robust characterization of this and other important phenomena presents a long-standing challenge in Earth system science, the resolution of which would lead to improved scientific understanding and prediction of climate dynamics, as well as assessment of their impacts on human and natural systems. Here, we show that the spectral theory of dynamical systems, combined with techniques from data science, provides an effective means for extracting coherent modes of climate variability from high-dimensional model and observational data, requiring no frequency prefiltering, but recovering multiple timescales and their interactions. Lifecycle composites of ENSO are shown to improve upon results from conventional indices in terms of dynamical consistency and physical interpretability. In addition, the role of combination modes between ENSO and the annual cycle in ENSO diversity is elucidated.
description: 41 pages, 12 figures, 2 tables
SEEDisCS II. Molecular gas in galaxy clusters and their large scale structure: low gas fraction galaxies, the case of CL1301.7$-$1139
Creators: name: Spérone-Longin, D.
name: Jablonka, P.
name: Combes, F.
name: Castignani, G.
name: Krips, M.
name: Rudnick, G.
name: Desjardins, T.
name: Zaritsky, D.
name: Finn, R. A.
name: De Lucia, G.
name: Desai, V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This paper is the second of a series that tackles the properties of molecular gas in galaxies residing in clusters and their related large-scale structures. Out of 21 targeted fields, 19 galaxies were detected in CO(3-2) with the Atacama Large Millimeter Array (ALMA), including two detections within a single field. These galaxies are either bona fide members of the CL1301.7$-$1139 cluster ($z=0.4828$, $σ_{cl}=681$ km s$^{-1}$), or located within $\sim 7 \times R_{200}$, its virial radius. They have been selected to sample the range of photometric local densities around CL1301.7$-$1139, with stellar masses above log($M_{\rm star}$) = 10, and to be located in the blue clump of star-forming galaxies derived from the $u$, $g$, and $i$ photometric bands. Unlike previous works, our sample selection does not impose a minimum star formation rate or detection in the far-infrared. As such and as much as possible, it delivers an unbiased view of the gas content of normal star-forming galaxies at $z \sim 0.5$. Our study highlights the variety of paths to star formation quenching, and most likely the variety of physical properties (i.e. temperature, density) of the corresponding galaxy's cold molecular gas. Just as in the case of CL1411.1$-$1148, although to a smaller extent, we identify a number of galaxies with lower gas fraction than classically found in other surveys. These galaxies can still be on the star-forming main sequence. When these galaxies are not inside the cluster virialised region, we provide hints that they are linked to their infall regions within $\sim 4 \times R_{200}$.
description: 15 pages, 11 figures, accepted for publication in A&A. arXiv admin note: text overlap with arXiv:2012.09592
Pseudo-Nambu-Goldstone Dark Matter Model Inspired by Grand Unification
Creators: name: Abe, Yoshihiko
name: Toma, Takashi
name: Tsumura, Koji
name: Yamatsu, Naoki
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A pseudo-Nambu-Goldstone boson (pNGB) is an attractive candidate for dark matter (DM) due to the simple evasion of the current severe limits of DM direct detection experiments. One of the pNGB DM models has been proposed based on a {\it gauged} $U(1)_{B-L}$ symmetry. The pNGB has long enough lifetime to be a DM and thermal relic abundance of pNGB DM can be fit with the observed value against the constraints on the DM decays from the cosmic-ray observations. The pNGB DM model can be embedded into an $SO(10)$ pNGB DM model in the framework of an $SO(10)$ grand unified theory, whose $SO(10)$ is broken to the Pati-Salam gauge group at the unified scale, and further to the Standard Model gauge group at the intermediate scale. Unlike the previous pNGB DM model, the parameters such as the gauge coupling constants of $U(1)_{B-L}$, the kinetic mixing parameter of between $U(1)_Y$ and $U(1)_{B-L}$ are determined by solving the renormalization group equations for gauge coupling constants with appropriate matching conditions. From the constraints of the DM lifetime and gamma-ray observations, the pNGB DM mass must be less than $\mathcal{O}(100)$$\,$GeV. We find that the thermal relic abundance can be consistent with all the constraints when the DM mass is close to half of the CP even Higg masses.
description: 26 pages, 6 tables, 5 figures; typos corrected; some figures replaced; some references and paragraphs added; accepted for publication in Physical Review D
Soonspot: Software to Determine Areas and Sunspot Positions
Creators: name: Galaviz, P.
name: Carrasco, V. M. S.
name: Sánchez-Bajo, F.
name: Gallego, M. C.
name: Vaquero, J. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A new software (Soonspot) for the determination of the heliographic coordinates and areas of sunspots from solar images is presented. This program is very user-friendly and the accuracy of its results has been checked by using solar images provided by the Debrecen Photoheliographic Data (DPD). Due to its applicability in the studies of historical solar observations, the program has been used to analyze the solar drawings carried out by Hevelius in the 17th century.
Partition Functions of Chern-Simons Theory on Handlebodies by Radial Quantization
Creators: name: Porrati, Massimo
name: Yu, Cedric
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use radial quantization to compute Chern-Simons partition functions on handlebodies of arbitrary genus. The partition function is given by a particular transition amplitude between two states which are defined on the Riemann surfaces that define the (singular) foliation of the handlebody. The final state is a coherent state while on the initial state the holonomy operator has zero eigenvalue. The latter choice encodes the constraint that the gauge fields must be regular everywhere inside the handlebody. By requiring that the only singularities of the gauge field inside the handlebody must be compatible with Wilson loop insertions, we find that the Wilson loop shifts the holonomy of the initial state. Together with an appropriate choice of normalization, this procedure selects a unique state in the Hilbert space obtained from a Kähler quantization of the theory on the constant-radius Riemann surfaces. Radial quantization allows us to find the partition functions of Abelian Chern-Simons theories for handlebodies of arbitrary genus. For non-Abelian compact gauge groups, we show that our method reproduces the known partition function at genus one.
description: 32 pages, 1 figure. V2: added references, published version
Number of Sunspot Groups from the Galileo-Scheiner controversy revisited
Creators: name: Carrasco, V. M. S.
name: Gallego, M. C.
name: Vaquero, J. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We revise the sunspot observations made by Galileo Galilei and Christoph Scheiner in the context of their controversy on the nature of sunspots. Their sunspot records not included in the current sunspot group database, used as a basis to calculate the sunspot group number, are analyzed. Within the documentary sources consulted in this work, we can highlight the sunspot observations by Scheiner included in the letters sent under the pseudonym Apelles to Marcus Welser and the first sunspot observations made by Galileo, which can be consulted in Le opere di Galileo Galilei. These sunspot observations would extend the temporal coverage for these two observers and filling some gaps in the current group database in the earliest period where the data available is sparse. Moreover, we have detected changes in the quality of the sunspot drawings made by Galileo and Scheiner in their observation series affecting to the number of groups recorded by the two observers. We also compare these records with sunspot observations made by other astronomers of that time. According to this comparison and regarding the same observation days, Scheiner was generally the astronomer who reported more sunspot groups while Harriot, Cigoli, and Galileo recorded a similar number of groups. We conclude these differences are mainly because of the observational method used by the observers.
Top off the unparticle
Creators: name: Choudhury, Debajyoti
name: Ghosh, Dilip Kumar
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The existence of an exactly scale invariant sector possessing a non-trivial infrared fixed point at a higher energy scale and its possible communication with the Standard Model particles through a heavy messenger sector has been shown to lead to curious unparticle effects. We demonstrate that top physics at the Tevatron can already constrain such theories. We also consider possible improvements at the LHC and delineate some striking signatures.
description: 5 pages
Vesicle budding induced by binding of curvature-inducing proteins
Creators: name: Noguchi, Hiroshi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Vesicle budding induced by protein binding that generates an isotropic spontaneous curvature is studied using a mean-field theory. Many spherical buds are formed via protein binding. As the binding chemical potential increases, the proteins first bind to the buds and then to the remainder of the vesicle. For a high spontaneous curvature and/or high bending rigidity of the bound membrane, it is found that a first-order transition occurs between a small number of large buds and a large number of small buds. These two states coexist around the transition point. The proposed scheme is simple and easily applicable to many interaction types, so we investigate the effects of inter-protein interactions, the protein-insertion-induced changes in area, the variation of the saddle-splay-modulus, and the area-difference-elasticity energy. The differences in the preferred curvatures for curvature sensing and generation are also clarified.
description: 14 pages, 17 figures
Thermoelectric response near a quantum critical point: the case of CeCoIn5
Creators: name: Izawa, K.
name: Behnia, K.
name: Matsuda, Y.
name: Shishido, H.
name: Settai, R.
name: Onuki, Y.
name: Flouquet, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a study of thermoelectric coefficients in CeCoIn_5 down to 0.1 K and up to 16 T in order to probe the thermoelectric signatures of quantum criticality. In the vicinity of the field-induced quantum critical point, the Nernst coefficient nu exhibits a dramatic enhancement without saturation down to lowest measured temperature. The dimensionless ratio of Seebeck coefficient to electronic specific heat shows a minimum at a temperature close to threshold of the quasiparticle formation. Close to T_c(H), in the vortex-liquid state, the Nernst coefficient behaves anomalously in puzzling contrast with other superconductors and standard vortex dynamics.
description: 4 pages, 4 figures,final published version
Heavy quark transport coefficients in a viscous QCD medium with collisional and radiative processes
Creators: name: Shaikh, Adiba
name: Kurian, Manu
name: Das, Santosh K.
name: Chandra, Vinod
name: Dash, Sadhana
name: Nandi, Basanta K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The heavy quark drag and momentum diffusion coefficients in the presence of both the collisional and radiative processes have been studied in a hot viscous QCD medium. The thermal medium effects are incorporated by employing the effective fugacity quasiparticle model based on the lattice QCD equation of state. Viscous effects are embedded into the heavy quark transport through the near-equilibrium distribution functions of the constituent medium particles of the quark-gluon plasma. The viscous corrections to the momentum distributions have been estimated from the effective Boltzmann equation. The effect of shear viscous correction to drag and diffusion is investigated by considering the soft gluon radiation by heavy quarks along with the elastic collisional processes of the heavy quark with the light quarks and gluons within the QGP medium. The momentum and temperature dependence of the heavy quark transport coefficients are seen to be sensitive to the viscous coefficient of the QGP for the collisional and radiative processes. The collisional and radiative energy loss of the heavy quark in the viscous quark-gluon plasma has also been explored.
description: 12 pages, 6 figures, published version
Sunspot Records by Antonio Colla just after the Dalton Minimum
Creators: name: Carrasco, V. M. S.
name: Bertolin, C.
name: Domínguez-Castro, F.
name: de Ferri, L.
name: Gallego, M. C.
name: Vaquero, J. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Antonio Colla was a meteorologist and astronomer who made sunspot observations at the Meteorological Observatory of the Parma University (Italy). He carried out his sunspot records from 1830 to 1843, just after the Dalton Minimum. We have recovered 71 observation days for this observer. Unfortunately, many of these records are qualitative and we could only obtain the number of sunspot groups and/or single sunspots from 25 observations. However, we highlight the importance of these records because Colla is not included in the sunspot group database as an observer and, therefore, neither his sunspot observations. According to the number of groups, the sunspot observations made by Colla are similar as several observers of his time. For common observation day, only Stark significantly recorded more groups than Colla. Moreover, we have calculated the sunspot area and positions from Colla's sunspot drawings concluding that both areas and positions recorded by this observer seem unreal. Therefore, Colla's drawings can be interpreted such as sketches including reliable information on the number of groups but the information on sunspot areas and positions should not be used for scientific purposes.
Fractalization drives crystalline states in a frustrated spin system
Creators: name: Sebastian, Suchitra E.
name: Harrison, N.
name: Sengupta, P.
name: Batista, C. D.
name: Francoual, S.
name: Palm, E.
name: Murphy, T.
name: Marcano, N.
name: Dabkowska, H. A.
name: Gaulin, B. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We measure a sequence of quantum Hall-like plateaux at 1/q: 9 >= q >= 2 and p/q = 2/9 fractions in the magnetisation with increasing magnetic field in the geometrically frustrated spin system SrCu2(BO3)2. We find that the entire observed sequence of plateaux is reproduced by solving the Hofstadter problem on the system lattice when short-range repulsive interactions are included, thus providing a sterling demonstration of bosons confined by a magnetic and lattice potential mimicking fermions in the extreme quantum limit.
description: 14 pages, 3 figures
Dissipative dynamics of superfluid vortices at non-zero temperatures
Creators: name: Berloff, Natalia G.
name: Youd, Anthony J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the evolution and dissipation of vortex rings in a condensate at non-zero temperature, in the context of the classical field approximation, based on the defocusing nonlinear Schrödinger equation. The temperature in such a system is fully determined by the total number density and the number density of the condensate. A vortex ring is introduced into a condensate in a state of thermal equilibrium, and interacts with non-condensed particles. These interactions lead to a gradual decrease in the vortex line density, until the vortex ring completely disappears. We show that the square of the vortex line length changes linearly with time, and obtain the corresponding universal decay law. We relate this to mutual friction coefficients in the fundamental equation of vortex motion in superfluids.
description: 4 pages, 3 figures
Generating discrete-time constrained random walks and Lévy flights
Creators: name: De Bruyne, Benjamin
name: Majumdar, Satya N.
name: Schehr, Gregory
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce a method to exactly generate bridge trajectories for discrete-time random walks, with arbitrary jump distributions, that are constrained to initially start at the origin and return to the origin after a fixed time. The method is based on an effective jump distribution that implicitly accounts for the bridge constraint. It is illustrated on various jump distributions and is shown to be very efficient in practice. In addition, we show how to generalize the method to other types of constrained random walks such as generalized bridges, excursions, and meanders.
description: 18 pages, 11 figures
Node similarity within subgraphs of protein interaction networks
Creators: name: Penner, Orion
name: Sood, Vishal
name: Musso, Gabe
name: Baskerville, Kim
name: Grassberger, Peter
name: Paczuski, Maya
Publisher: name: arXiv
Year: 2007
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We propose a biologically motivated quantity, twinness, to evaluate local similarity between nodes in a network. The twinness of a pair of nodes is the number of connected, labeled subgraphs of size n in which the two nodes possess identical neighbours. The graph animal algorithm is used to estimate twinness for each pair of nodes (for subgraph sizes n=4 to n=12) in four different protein interaction networks (PINs). These include an Escherichia coli PIN and three Saccharomyces cerevisiae PINs -- each obtained using state-of-the-art high throughput methods. In almost all cases, the average twinness of node pairs is vastly higher than expected from a null model obtained by switching links. For all n, we observe a difference in the ratio of type A twins (which are unlinked pairs) to type B twins (which are linked pairs) distinguishing the prokaryote E. coli from the eukaryote S. cerevisiae. Interaction similarity is expected due to gene duplication, and whole genome duplication paralogues in S. cerevisiae have been reported to co-cluster into the same complexes. Indeed, we find that these paralogous proteins are over-represented as twins compared to pairs chosen at random. These results indicate that twinness can detect ancestral relationships from currently available PIN data.
description: 10 pages, 5 figures. Edited for typos, clarity, figures improved for readability
ปัจจัยที่สัมพันธ์กับความร่วมมือในการจัดการน้ำท่วมระหว่างองค์กรปกครองส่วนท้องถิ่นและชุมชน กรณีศึกษาพื้นที่น้ำท่วมซ้ำซากในลุ่มน้ำปากพนัง จังหวัดนครศรีธรรมราช
Creators: name: กิตติศักดิ์ แสงทอง และ อิศรัฏฐ์ รินไธสง
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2557
Subjects: องค์ประกอบ, ตัวชี้วัด, ความร่วมมือ, การจัดการน้ำท่วม

description: 1, 7, วารสารเทคโนโลยีภาคใต้
ความพึงพอใจของผู้รับบริการ กรณีศึกษาเทศบาลตำบลนาขยาด อำเภอควนขนุน จังหวัดพัทลุง
Creators: name: เสาวรัตน์ บุษรานนท์ และ อารดา ลีชุติวัฒน์
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2557
Subjects: ความพึงพอใจ, ผู้รับบริการ, เทศบาล

description: 1, 7, วารสารเทคโนโลยีภาคใต้
Critical edge behavior in unitary random matrix ensembles and the thirty fourth Painleve transcendent
Creators: name: Its, A. R.
name: Kuijlaars, A. B. J.
name: Ostensson, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 15A52, 33E17, 34M55

description: We describe a new universality class for unitary invariant random matrix ensembles. It arises in the double scaling limit of ensembles of random $n \times n$ Hermitian matrices $Z_{n,N}^{-1} |\det M|^{2α} e^{-N \Tr V(M)} dM$ with $α> -1/2$, where the factor $|\det M|^{2α}$ induces critical eigenvalue behavior near the origin. Under the assumption that the limiting mean eigenvalue density associated with $V$ is regular, and that the origin is a right endpoint of its support, we compute the limiting eigenvalue correlation kernel in the double scaling limit as $n, N \to \infty$ such that $n^{2/3}(n/N-1) = O(1)$. We use the Deift-Zhou steepest descent method for the Riemann-Hilbert problem for polynomials on the line orthogonal with respect to the weight $|x|^{2α} e^{-NV(x)}$. Our main attention is on the construction of a local parametrix near the origin by means of the $ψ$-functions associated with a distinguished solution of the Painleve XXXIV equation. This solution is related to a particular solution of the Painleve II equation, which however is different from the usual Hastings-McLeod solution.
description: 51 pages, 6 figures
Lysmata bahia Rhyne & Lin 2006
Creators: name: Pachelle, Paulo P. G.
name: Anker, Arthur
name: Mendes, Cecili B.
name: Bezerra, Luis E. A.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Hippolytidae
Lysmata
Lysmata bahia

description: Lysmata bahia Rhyne & Lin, 2006
 Lysmata bahia Rhyne & Lin 2006: 191, figs. 16–18, pl. 1F, 2.
 Material examined. Brazil, Ceará: 1 hermaphrodite, LABOMAR-UFC 18, Fortaleza, Praia do Meireles, coll. unknown, 18.ix.1967.
 Distribution. Western Atlantic: Caribbean Sea (Panama) and Brazil (Ceará, Sergipe, Bahia, Rio de Janeiro, São Paulo) (Rhyne & Lin 2006; Baeza 2008; Barros-Alves et al. 2015; present study).
 Remarks. The Ceará material identified as Lysmata wurdemanni (Gibbes, 1850) by Fausto-Filho (1970a) was re-identified as L. bahia during the present study, representing a new record of this species for the state of Ceará and the northern-most record in Brazil.
description: Published as part of Pachelle, Paulo P. G., Anker, Arthur, Mendes, Cecili B. & Bezerra, Luis E. A., 2016, Decapod crustaceans from the state of Ceará, northeastern Brazil: an updated checklist of marine and estuarine species, with 23 new records, pp. 1-63 in Zootaxa 4131 (1) on page 16, DOI: 10.11646/zootaxa.4131.1.1, http://zenodo.org/record/400297
An Expert system to predict the ecological effects of prescribed fire
Creators: name: Johnston, Michael Macfarlane
Publisher: name: University of British Columbia
Year: 2010

description: This thesis reports the results of a project to develop an expert system to predict the ecological effects of prescribed fire. The central goal of this project was to examine the suitability of the prescribed burning domain for the application of expert systems technology and to recommend a strategy for further research in this area. With the sponsorship of the Protection Branch of the BC Forest Service, several experts were contacted in order to ask for their participation in the Fire Effects Expert System project. Five different experts were consulted and several different conceptual models of the domain were developed. The limiting factor concept was used to model the effects of prescribed fire on the direct and indirect growth factors. A prototype of the Fire Effects system was eventually constructed using the VP-EXPERT software package. Many difficulties in using expert systems technology in the prescribed burning domain were identified. These difficulties include: conflicting viewpoints amongst the different experts, uncertainty of knowledge concerning fire effects, and lack of upper management commitment to the project. However, many favourable factors were identified and these include: the scarcity of domain experts, the qualitative nature of the decisions, the large solution space of the problems, and the existence of a large amount of narrow domain-specific knowledge. Several uses for the Fire Effects system were proposed. These uses include: aiding foresters in developing fire prescriptions, educating forest managers, and serving as a basis for group discussions concerning fire effects. A strategy for further research in the prescribed burning domain was also proposed. The principal features of this strategy are to plan and coordinate the development of expert systems at a high management level, to draw extensively on academic work in the area, and to develop specific standards pertaining to all site information data that is collected by the Forest service.
Improving Magnetic Resonance Imaging with Smart and Thin Metasurfaces
Creators: name: Stoja, Endri
name: Konstandin, Simon
name: Philipp, Dennis
name: Wilke, Robin N.
name: Betancourt, Diego
name: Bertuch, Thomas
name: Jenne, Juergen
name: Umathum, Reiner
name: Guenther, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Over almost five decades of development and improvement, Magnetic Resonance Imaging (MRI) has become a rich and powerful, non-invasive technique in medical imaging, yet not reaching its physical limits. Technical and physiological restrictions constrain physically feasible developments. A common solution to improve imaging speed and resolution is to use higher field strengths, which also has subtle and potentially harmful implications. However, patient safety is to be considered utterly important at all stages of research and clinical routine. Here we show that dynamic metamaterials are a promising solution to expand the potential of MRI and to overcome some limitations. A thin, smart, non-linear metamaterial is presented that enhances the imaging performance and increases the signal-to-noise ratio in 3T MRI significantly (up to eightfold), whilst the transmit field is not affected due to self-detuning and, thus, patient safety is also assured. This self-detuning works without introducing any additional overhead related to MRI-compatible electronic control components or active (de-)tuning mechanisms. The design paradigm, simulation results, on-bench characterization, and MRI experiments using homogeneous and structural phantoms are described. The suggested single-layer metasurface paves the way for conformal and patient-specific manufacturing, which was not possible before due to typically bulky and rigid metamaterial structures.
description: 24 pages, 13 figures
Revisiting the Amplitude of Solar Cycle 9: The Case of Sunspot Observations by W.C. Bond
Creators: name: Carrasco, V. M. S.
name: Gallego, M. C.
name: Arlt, R.
name: Vaquero, J. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: William Cranch Bond, director of the Harvard College Observatory in mid-19th century, carried out detailed sunspot observations during the period 1847-1849. We highlight Bond was the observer with the highest daily number of sunspot groups observed in Solar Cycle 9 recording 18 groups on 26 December 1848 according to the current sunspot group database. However, we have detected significant mistakes in these counts due to the use of sunspot position tables instead of solar drawings. Therefore, we have revisited the sunspot observations made by Bond, establishing a new group counting. Our new counts of the sunspot groups from Bond's drawings indicate that solar activity was previously overestimated. Moreover, after this new counting, Bond would not be the astronomer who recorded the highest daily group number for Solar Cycle 9 but Schmidt with 16 groups on 14 February 1849. We have also indicated the new highest annual group numbers recorded by any observer for the period 1847-1849 in order to correct those values applied in the "brightest star" method, which is used as a rough indicator of the solar activity level. Furthermore, a comparison between Bond's sunspot records and the sunspot observations made by Schwabe and Wolf is shown. We conclude that the statistics of Wolf and Bond are similar regarding to the group count. Additionally, Schwabe was able to observe smaller groups than Bond.
Swampland de Sitter Conjectures in No-Scale Supergravity Models
Creators: name: Rasulian, Ida M.
name: Torabian, Mahdi
name: Velasco-Sevilla, Liliana
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is challenging to construct explicit and controllable models that realize de Sitter solutions in string compactifications. This difficulty is the main motivation for the Refined de Sitter Conjecture and the Trans-Planckian Censorship Conjecture which forbid stable de Sitter solutions but allow metastable, unstable and rolling solutions in a theory consistent with quantum gravity. Inspired by this, we first study a toy de Sitter No-Scale Supergravity model and show that for particular choices of parameters it can be consistent with the Refined de Sitter Conjecture and the Trans-Planckian Censorship Conjecture. Then we modify the model by adding rolling dynamics and show that the theory can become stable along the imaginary direction, where it would otherwise be unstable. We extend the model to multi-field rolling and de Sitter fields, finding the parameter space where they can be compatible with the Refined de Sitter Conjecture . The modified models with rolling fields can be used to construct Quintessence models to accommodate the accelerating expansion of the Universe.
description: 18 pages, 4 figures. Updated with version matching the published version. References added and minor typos corrected
Radius measurement in binary stars: simulations of intensity interferometry
Creators: name: Rai, Km Nitu
name: Basak, Soumen
name: Saha, Prasenjit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Mass and radius measurements of stars are important inputs for models of stellar structure. Binary stars are of particular interest in this regard, because astrometry and spectroscopy of a binary together provide the masses of both stars as well as the distance to the system, while interferometry can both improve the astrometry and measure the radii of the stars. In this work we simulate parameter recovery from intensity interferometry, especially the challenge of disentangling the radii of two stars from their combined interferometric signal. Two approaches are considered: separation of the visibility contributions of each star with the help of differing brightness ratios at different wavelengths, and direct fitting of the intensity correlation to a multi-parameter model. Full image reconstructions is not attempted. Measurement of angular radii, angular separation and first-order limb-darkening appears readily achievable for bright binary stars with current instrumentation.
description: 12 pages, 11 figures
Vibrational effects on low-temperature properties of molecular conductors
Creators: name: Mravlje, Jernej
name: Ramsak, Anton
name: Zitko, Rok
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We calculate characteristic correlation functions for the Anderson model with additional phonon-assisted coupling to the odd conduction channel. This model describes, for example, the behavior of a molecule embedded between two electrodes in linear transport experiments where the position of the molecule with respect to the leads affects the tunneling amplitudes. We use variational projection-operator method and numerical renormalization group (NRG) method. The spin is Kondo screened either by even or odd conduction channel depending on the gate voltage and electron-phonon coupling. However, in all regimes the gate-voltage dependence of the zero temperature conductance is found to be qualitatively the same as in the model with no coupling to the vibrational mode.
description: 2 pages, 3 figures, to be presented on "The International Conference on Strongly Correlated Electron Systems" SCES'07, May 13-18, Houston, USA
Developing an assessment protocol for sexually abused adolescents in treatment programs : a single case study of the process
Creators: name: Kastens, Ingrid
Publisher: name: University of British Columbia
Year: 2010

description: This thesis evolved as part of a practice-thesis combination option for the completion of the degree of Master in Social Work. The purpose of combining research with practice was to allow for a learning experience in each area. Both the practice and research were conducted within Nisha Children's Society. (Nisha Society is a non-profit organization dedicated to the provision of high quality professional treatment and counselling services for adolescents and families. See Appendix A for a more detailed de script ion.) The major work of the thesis focused on developing a practical and useful assessment process designed to give a better picture of sexually abused adolescents who end up in treatment programs. Not a great deal is known about which sexually abused adolescents will require intensive treatment programs, and which ones will not. It is of concern that the professional community does not have a good picture of who the sexually abused adolescents who have serious emotional and behavioural problems really are in terms of socio-demographics, developmental status, and emotional health. A need exists to clarify which instruments would provide the most crucial information. There is also a need to clarify the role of personal attributes and the role of characteristics of the environment as they both impact on the stress-coping and resiliency attributes of adolescents in treatment. In order to effectively counsel or plan for sexually abused adolescents, we need to better understand sexual abuse as one of several possible pre- and/or co-existing sources of individual stress or trauma. The assessment design used an ecological or stress-coping model of abuse framed within a normative developmental perspective. The thesis focused on developing the assessment protocol, rather than on the impact of child sexual abuse on adolescents. Thus a very large and time consuming part of the research has been the selecting of the seemingly best suited measures. The measures and framework chosen, and the rationale for these choices are described in detail within this report. The final chapters of this thesis focus on the findings of the "trial run"/single case study and the implications for social work.
Mass Outflows from Dissipative Shocks in Hot Accretion Flows
Creators: name: Fukumura, Keigo
name: Kazanas, Demosthenes
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider stationary, axisymmetric hydrodynamic accretion flows in Kerr geometry. As a plausible means of efficiently separating a small population of nonthermal particles from the bulk accretion flows, we investigate the formation of standing dissipative shocks, i.e. shocks at which fraction of the energy, angular momentum and mass fluxes do not participate in the shock transition of the flow that accretes onto the compact object but are lost into collimated (jets) or uncollimated (winds) outflows. The mass loss fraction (at a shock front) is found to vary over a wide range (0 - 95%) depending on flow's angular momentum and energy. On the other hand, the associated energy loss fraction appears to be relatively low (<1%) for a flow onto a non-rotating black hole case, whereas the fraction could be an order of magnitude higher (<10%) for a flow onto a rapidly-rotating black hole. By estimating the escape velocity of the outflowing particles with a mass-accretion rate relevant for typical active galactic nuclei, we find that nearly 10% of the accreting mass could escape to form an outflow in a disk around a non-rotating black hole, while as much as 50% of the matter may contribute to outflows in a disk around a rapidly-rotating black hole. In the context of disk-jet paradigm, our model suggests that shock-driven outflows from accretion can occur in regions not too far from a central engine. Our results imply that a shock front under some conditions could serve as a plausible site where (nonthermal) seed particles of the outflows (jets/winds) are efficiently decoupled from bulk accretion.
description: 25 pages, 10 black&white figures, Accepted to ApJ
Humanistic Aspects of Text and Image Interpretation: Five Lectures
Creators: name: Legewie, Heiner
Publisher: name: Zenodo
Year: 2024
Subjects: Paradigms in social research, computer-aided qualitative data analysis, ATLAS.ti, understanding the other, hermeneutics, semiotics, signs and meaning, communication theory, Morelli method, serendipity, open artwork, theory of meaning, brain and consciousness, qualia, phenomenology of the lifeworld, artificial intelligence, large language models, theory of communicative action, qualitative projects, discovery of new theories, abduction, grounded theory

description: In this lecture series I would like to take you on a journey through the interdisciplinary foundations of interpreting qualitative data as text and images - from hermeneutics, semiotics and phenomenology to the theory of communicative action. So this is not about the many individual methods of text and image interpretation, for which there are excellent introductions, individual presentations and handbook articles, and webinars.

The fifth lecture describes the ‘philosophy’ of qualitative projects; it is about the logic of discovering new insights and about the grounded as a comprehensive project strategy.

My aim is to make this lecture series an exciting intellectual adventure and to provide you with a rich background knowledge of text and image interpretation. Along the way, you will gain insights into existential questions such as the position of consciousness in the material world or the prerequisites for understanding others and communication.

In all of this, I will endeavour to convey even sophisticated theoretical approaches in an understandable way.
Imaginary chemical potentials and the phase of the fermionic determinant
Creators: name: Conradi, Simone
name: D'Elia, Massimo
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A numerical technique is proposed for an efficient numerical determination of the average phase factor of the fermionic determinant continued to imaginary values of the chemical potential. The method is tested in QCD with eight flavors of dynamical staggered fermions. A direct check of the validity of analytic continuation is made on small lattices and a study of the scaling with the lattice volume is performed.
description: 6 pages, 6 figures