cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The conditional Lyapunov exponents and synchronisation of rotating turbulent flows
Creators: name: Li, Jian
name: Tian, Mengdan
name: Li, Yi
name: Si, Wenwen
name: Mohammed, Huda Khaleel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The synchronisation between rotating turbulent flows in periodic boxes is investigated numerically. The flows are coupled via a master-slave coupling, taking the Fourier modes with wavenumber below a given value $k_m$ as the master modes. It is found that synchronisation happens when $k_m$ exceeds a threshold value $k_c$, and $k_c$ depends strongly on the forcing scheme. In rotating Kolmogorov flows, $k_cη$ does not change with rotation in the range of rotation rates considered, $η$ being the Kolmogorov length scale. Even though the energy spectrum has a steeper slope, the value of $k_cη$ is the same as that found in isotropic turbulence. In flows driven by a forcing term maintaining constant energy injection rate, synchronisation becomes easier when rotation is stronger. $k_cη$ decreases with rotation, and it is reduced significantly for strong rotations when the slope of the energy spectrum approaches $-3$. It is shown that the conditional Lyapunov exponent for a given $k_m$ is reduced by rotation in the flows driven by the second type of forcing, but it increases mildly with rotation for the Kolmogorov flows. The local conditional Lyapunov exponents fluctuate more strongly as rotation is increased, although synchronisation occurs as long as the average conditional Lyapunov exponents are negative. We also look for the relationship between $k_c$ and the energy spectra of the Lyapunov vectors. We find that the spectra always seem to peak around $k_c$, and synchronisation fails when the energy spectra of the conditional Lyapunov vectors have a local maximum in the slaved modes.
Agent-based neutral competition in two-community networks
Creators: name: Ishida, Kota
name: Oborny, Beata
name: Gastner, Michael T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Competition between alternative states is an essential process in social and biological networks. Neutral competition can be represented by an unbiased random drift process in which the states of vertices (e.g., opinions, genotypes, or species) in a network are updated by repeatedly selecting two connected vertices. One of these vertices copies the state of the selected neighbor. Such updates are repeated until all vertices are in the same "consensus" state. There is no unique rule for selecting the vertex pair to be updated. Real-world processes comprise three limiting factors that can influence the selected edge and the direction of spread: (1) the rate at which a vertex sends a state to its neighbors, (2) the rate at which a state is received by a neighbor, and (3) the rate at which a state can be exchanged through a connecting edge. We investigate how these three limitations influence neutral competition in networks with two communities generated by a stochastic block model. By using Monte Carlo simulations, we show how the community structure and update rule determine the states' success probabilities and the time until a consensus is reached. We present a heterogeneous mean-field theory that agrees well with the Monte Carlo simulations. The effectiveness of the heterogeneous mean-field theory implies that quantitative predictions about the consensus are possible even if empirical data (e.g., from ecological fieldwork or observations of social interactions) do not allow a complete reconstruction of all edges in the network.
description: 13 pages, 4 figures, to be published in Physical Review E
Suzaku Observation of 30Dor C: A Supernova Remnant with the Largest Non-Thermal Shell
Creators: name: Yamaguchi, Hiroya
name: Bamba, Aya
name: Koyama, Katsuji
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper reports on the Suzaku results of thermal and non-thermal features of 30 Dor C, a supernova remnant (SNR) in a superbubble of the Large Magellanic Cloud (LMC). The west rim exhibits a non-thermal X-ray spectrum with no thermal component. A single power-law model is rejected but a power-law model with spectral cutoff is accepted. The cutoff frequency of $(3-7)\times 10^{17}$ Hz is the highest among the shell type SNRs like SN 1006 ($\sim 6\times 10^{16}$ Hz), and hence 30 Dor C would be the site of the highest energy accelerator of the SNR shock. The southeast (SE) and northeast (NE) rims have both the thermal and non-thermal components. The thin-thermal plasmas in the both rims are in collisional ionization equilibrium state. The electron temperature of the plasma in the SE rim ($kT_e \sim 0.7$ keV) is found to be higher than the previously reported value. The power-law index from SE is nearly the same as, while that from the NE is larger than that of the West rim. The SNR age would be in the range of $(4-20)\times 10^3$ yr. Thus, 30 Dor C is likely to be the oldest shell-like SNR with non-thermal emission.
description: 7pages, 6 figures, accepted for publication in PASJ
A Simplified Framework for Air Route Clustering Based on ADS-B Data
Creators: name: Duong, Quan
name: Tran, Tan
name: Pham, Duc-Thinh
name: Mai, An
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The volume of flight traffic gets increasing over the time, which makes the strategic traffic flow management become one of the challenging problems since it requires a lot of computational resources to model entire traffic data. On the other hand, Automatic Dependent Surveillance - Broadcast (ADS-B) technology has been considered as a promising data technology to provide both flight crews and ground control staff the necessary information safely and efficiently about the position and velocity of the airplanes in a specific area. In the attempt to tackle this problem, we presented in this paper a simplified framework that can support to detect the typical air routes between airports based on ADS-B data. Specifically, the flight traffic will be classified into major groups based on similarity measures, which helps to reduce the number of flight paths between airports. As a matter of fact, our framework can be taken into account to reduce practically the computational cost for air flow optimization and evaluate the operational performance. Finally, in order to illustrate the potential applications of our proposed framework, an experiment was performed using ADS-B traffic flight data of three different pairs of airports. The detected typical routes between each couple of airports show promising results by virtue of combining two indices for measuring the clustering performance and incorporating human judgment into the visual inspection.
A Region Void of Irregular Satellites Around Jupiter
Creators: name: Haghighipour, N.
name: Jewitt, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An interesting feature of the giant planets of our solar system is the existence of regions around these objects where no irregular satellites are observed. Surveys have shown that, around Jupiter, such a region extends from the outermost regular satellite Callisto, to the vicinity of Themisto, the innermost irregular satellite. To understand the reason for the existence of such a satellite-void region, we have studied the dynamical evolution of Jovian irregulars by numerically integrating the orbits of several hundred test particles, distributed in a region between 30 and 80 Jupiter-radii, for different values of their semimajor axes, orbital eccentricities, and inclinations. As expected, our simulations indicate that objects in or close to the influence zones of the Galilean satellites become unstable because of interactions with Ganymede and Callisto. However, these perturbations cannot account for the lack of irregular satellites in the entire region between Callisto and Themisto. It is suggested that at distances between 60 and 80 Jupiter-radii, Ganymede and Callisto may have long-term perturbative effects, which may require the integrations to be extended to times much longer than 10 Myr. The interactions of irregular satellites with protosatellites of Jupiter at the time of the formation of Jovian regulars may also be a destabilizing mechanism in this region. We present the results of our numerical simulations and discuss their applicability to similar satellite void-regions around other giant planets.
description: 21 pages, 9 figures, 2 tables, accepted for publication in the Astronomical Journal
Exact eigenstates of extended SU($N$) Hubbard models: Generalizations of $η$-pairing states with $N$-particle off-diagonal long-range order
Creators: name: Yoshida, Hironobu
name: Katsura, Hosho
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider $N$-particle generalizations of $η$-pairing states in a chain of $N$-component fermions and show that these states are exact (high-energy) eigenstates of an extended SU($N$) Hubbard model. We compute the singlet correlation function of the states and find that its behavior is qualitatively different for even and odd $N$. When $N$ is even, these states exhibit off-diagonal long-range order in $N$-particle reduced density matrix. On the other hand, when $N$ is odd, the correlations decay exponentially with distance in the bulk, but end-to-end correlations do not vanish in the thermodynamic limit. Finally, we prove that these states are the unique ground states of suitably tailored Hamiltonians.
description: 10 pages, 4 figures, 1 table
A sample of mJy radio sources at 1.4 GHz in the Lynx and Hercules fields - I. Radio imaging, multicolour photometry and spectroscopy
Creators: name: Rigby, E. E.
name: Snellen, I. A.
name: Best, P. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: With the goal of identifying high redshift radio galaxies with FRI classification, here are presented high resolution, wide-field radio observations, near infra-red and optical imaging and multi-object spectroscopy of two fields of the Leiden-Berkeley Deep Survey. These fields, Hercules.1 and Lynx.2, contain a complete sample of 81 radio sources with S(1.4 GHz) > 0.5 mJy within 0.6 square degrees. This sample will form the basis for a study of the population and cosmic evolution of high redshift, low power, FRI radio sources which will be presented in Paper II. Currently, the host galaxy identification fraction is 86% with 11 sources remaining unidentified at a level of r > 25.2 mag (Hercules; 4 sources) or r > 24.4 mag (Lynx; 7 sources) or K > 20 mag. Spectroscopic redshifts have been determined for 49% of the sample and photometric redshift estimates are presented for the remainder of the sample.
description: Accepted by MNRAS; 24 pages, 7 figures. A full version, including figures is available at http://www.roe.ac.uk/~eer/eer_paper.ps
Microscopic Theory of the Magnetic Susceptibility of Insulators
Creators: name: Duff, Alistair H.
name: Lau, Aidan
name: Sipe, J. E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a general theory of the magnetic susceptibility of insulators that can be extended to treat spatially varying and finite frequency fields. While there are existing results in the literature for the zero frequency response that appear to be in disagreement with each other, we show that the apparent differences between them vanish with the use of various sum rules, and that our result is in agreement with them. Although our strategy is based on the use of Wannier functions, we show that our result can be written in a ``gauge invariant" form involving Bloch functions. We can write it as the sum of terms that involve the diagonal elements of the Berry connection, and this decomposition is particularly useful in considering the limit of isolated molecules. But these contributions can be repackaged to give a form independent of those diagonal elements, which is thus generally more suitable for numerical computation. We consider an h-BN model to demonstrate the practical considerations in building a model and making calculations within this formalism.
description: 15+7 pages, 1 figure Updated version: Some algebraic details have been moved to a supplemental arXiv posting, and clarifying statements added in various sections
Measurements of cell survival at low doses of radiation
Creators: name: Brosing, Juliet Wain
Publisher: name: University of British Columbia
Year: 2010

description: The effect of low closes of radiation is of primary importance if we wish to understand the basic mechanisms of radiation damage. In vitro experiments performed at clinically relevant doses can also lead to better understanding of radiotherapy protocols and fractionation regimes. The availability of accurate data at low doses can facilitate the examination of survival models which describe dose-effect relationships. Most cellular radiobiology experiments are performed at high doses (3 to 30 Cray). The errors in these experiments, while acceptable at high doses, are too large to allow determination of radiobiological parameters, such as oxygen enhancement ratio (OER) and relative biological effectiveness (RBE), at low doses (0 to 3 Cray). These experiments are limited in the low dose region because we are measuring only the surviving fraction, in a population of predominantly surviving cells, and because there is an uncertainty of 10 to 15% in the number of cells plated. We have developed a technique to assay cell survival at low doses. The exact number of cells plated is determined microscopically. After incubation, the number of killed cells and the number of surviving cells are both determined, by microscopic examination. While extremely labour intensive, this technique yields survival data, in the low dose region, which is much more accurate than the data obtained using classical methods. This technique can be used to measure many radiobiological parameters. We have chosen to examine the effect of oxygen at low doses. Our results clearly demonstrate that, for asynchronous Chinese Hamster Ovary (CHO) cells, the radiosensitizing effect of oxygen is reduced at lower doses. A Picker X-ray source (280 kVp, HVL 1.7 mm Cu) was used for these experiments. The choice of a survival model has important implications in the low dose region. The predictions of three different survival models regarding the effect of oxygen at low doses are discussed. This technique can be used to complement the classical "high dose assay" to obtain data that encompasses a large dose range. This will be especially valuable, for example, when attempting to fully describe radiobiological parameters, or when examining survival models.
Cross-correlation of Planck CMB lensing with DESI galaxy groups
Creators: name: Sun, Zeyang
name: Yao, Ji
name: Dong, Fuyu
name: Yang, Xiaohu
name: Zhang, Le
name: Zhang, Pengjie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We measure the cross-correlation between galaxy groups constructed from DESI Legacy Imaging Survey DR8 and \emph{Planck} CMB lensing, over overlapping sky area of 16876 $\rm deg^2$. The detections are significant and consistent with the expected signal of the large-scale structure of the universe, over group samples of various redshift, mass, richness $N_{\rm g}$ and over various scale cuts. The overall S/N is 40 for a conservative sample with $N_{\rm g}\geq 5$, and increases to $50$ for the sample with $N_{\rm g}\geq 2$. Adopting the \emph{Planck} 2018 cosmology, we constrain the density bias of groups with $N_{\rm g}\geq 5$ as $b_{\rm g}=1.31\pm 0.10$, $2.22\pm 0.10$, $3.52\pm 0.20$ at $0.1
description: 13 pages, 19 figures; Accepted by MNRAS
The LSPE-Strip beams
Creators: name: Realini, S.
name: Franceschet, C.
name: Villa, F.
name: Sandri, M.
name: Addamo, G.
name: Alonso-Arias, P.
name: Bersanelli, M.
name: Cuttaia, F.
name: Jones, M.
name: Maris, M.
name: Mena, F. P.
name: Mennella, A.
name: Molina, R.
name: Morgante, G.
name: Tomasi, M.
name: Zannoni, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: In this paper we describe the design and characterization of the optical system of LSPE/Strip, a coherent polarimeter array that will observe the microwave sky from the Teide Observatory in Tenerife in two frequency bands centred at 43 and 95 GHz through a dual-reflector crossed-Dragone telescope of 1.5 m aperture. In general, optical systems composed by a telescopefeed array assembly have non-idealities that might limit their ability to perform high-precision measurements. It is thus necessary to understand, characterize and properly control these systematic effects. For this reason, we performed electromagnetic simulations to characterize angular resolution, sidelobes, main beam symmetry, polarization purity and feedhorns orientation. The results presented in this paper will be an essential input for further optical studies and for the LSPE/Strip data analysis. Ultimately, they will be used to assess the impact of optical systematic effects on the scientific results.
description: 18 pages, 13 figures
Is novelty predictable?
Creators: name: Fannjiang, Clara
name: Listgarten, Jennifer
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Biomolecules (q-bio.BM)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Machine learning-based design has gained traction in the sciences, most notably in the design of small molecules, materials, and proteins, with societal implications spanning drug development and manufacturing, plastic degradation, and carbon sequestration. When designing objects to achieve novel property values with machine learning, one faces a fundamental challenge: how to push past the frontier of current knowledge, distilled from the training data into the model, in a manner that rationally controls the risk of failure. If one trusts learned models too much in extrapolation, one is likely to design rubbish. In contrast, if one does not extrapolate, one cannot find novelty. Herein, we ponder how one might strike a useful balance between these two extremes. We focus in particular on designing proteins with novel property values, although much of our discussion addresses machine learning-based design more broadly.
Staticity and regularity for zero rest-mass fields near spatial infinity on flat spacetime
Creators: name: Gasperin, Edgar
name: Kroon, Juan A. Valiente
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Linear zero-rest-mass fields generically develop logarithmic singularities at the critical sets where spatial infinity meets null infinity. Friedrich's representation of spatial infinity is ideally suited to study this phenomenon. These logarithmic singularities are an obstruction to the smoothness of the zero-rest-mass field at null infinity and, in particular, to peeling. In the case of the spin-2 field it has been shown that these logarithmic singularities can be precluded if the initial data for the field satisfies a certain regularity condition involving the vanishing, at spatial infinity, of a certain spinor (the linearised Cotton spinor) and its totally symmetrised derivatives. In this article we investigate the relation between this regularity condition and the staticity of the spin-2 field. It is shown that while any static spin-2 field satisfies the regularity condition, not every solution satisfying the regularity condition is static. This result is in contrast with what happens in the case of General Relativity where staticity in a neighbourhood of spatial infinity and the smoothness of the field at future and past null infinities are much more closely related.
description: 21 pages
Stochastic time-dependent current-density functional theory: a functional theory of open quantum systems
Creators: name: D'Agosta, R.
name: Di Ventra, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The dynamics of a many-body system coupled to an external environment represents a fundamentally important problem. To this class of open quantum systems pertains the study of energy transport and dissipation, dephasing, quantum measurement and quantum information theory, phase transitions driven by dissipative effects, etc. Here, we discuss in detail an extension of time-dependent current-density-functional theory (TDCDFT), we named stochastic TDCDFT [Phys. Rev. Lett. {\bf 98}, 226403 (2007)], that allows the description of such problems from a microscopic point of view. We discuss the assumptions of the theory, its relation to a density matrix formalism, and the limitations of the latter in the present context. In addition, we describe a numerically convenient way to solve the corresponding equations of motion, and apply this theory to the dynamics of a 1D gas of excited bosons confined in a harmonic potential and in contact with an external bath.
description: 17 pages, 7 figures, RevTex4; few typos corrected, a figure modified
Distributions of parity differences and biases in partitions into distinct parts
Creators: name: Man, Siu Hang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: For a partition $λ\vdash n$, we let $\operatorname{pd}(λ)$, the parity difference of $λ$, be the number of odd parts of $λ$ minus the number of even parts of $λ$. We prove for $c_0\in\mathbb{R}$ an asymptotic expansion for the number of partitions of $n$ into distinct parts with normalised parity difference $n^{- 1/4}\operatorname{pd}(λ)$ greater than $c_0$ as $n\to \infty$. As a corollary, we find the distribution of the parity differences and parity biases for partitions of $n$ into distinct parts. We also establish analogous results for generalised parity differences modulo $N$.
description: Accepted version, 24 pages, 4 figures
Stroborineceras felis Korn & Bockwinkel 2022, gen. et sp. nov.
Creators: name: Korn, Dieter
name: Bockwinkel, Jürgen
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Nautilida
Trigonoceratidae
Stroborineceras
Stroborineceras felis

description: Stroborineceras felis gen. et sp. nov.
urn:lsid:zoobank.org:act: 406664D9-FD31-430B-8988-AD7510B6B36A
Fig. 8, Table 3
Diagnosis
Species of Stroborineceras gen. nov. with weakly depressed, rounded-pentagonal whorl profile (ww/wh ~1.20), venter concave, ventrolateral shoulder angular. Whorls not embracing. Ornament with five faint spiral ridges located on the flank.
Etymology
From the Latin ‘ felis ’, meaning ‘cat’ and referring to the characteristic whorl profile resembling a cat’s head.
Type material
Holotype ALGERIA • Mouydir, south of Oued Temertasset (locality MOU-D1); Argiles de Teguentour (Upper Pericyclus-Progoniatites Assemblage; early late Tournaisian); Korn et al. 2002 Coll.; illustrated in Fig. 8A; MB.C.30454.
Description
Holotype MB.C.30454 is a phragmocone fragment of slightly less than 90 degrees in length (Fig. 8A). It reaches a whorl height of 13 mm and the profile is weakly depressed (ww/wh = 1.22). The characteristic whorl profile has the outline of a cat’s head shape (Fig. 8B); its general shape is rounded-pentagonal. The venter is concavely incurved and is bordered by the very prominent, angular ventrolateral shoulder. The profile is widest at the middle of the whorl height; from here the flanks converge with a slight concave incurvation. The dorsum is broadly rounded. On the flank about five spiral lines are visible; they become weaker towards the dorsum. The suture line shows a deep, almost semicircular external lobe, a subacute ventrolateral saddle, a shallow, very broadly rounded lateral lobe and a very broad, low internal saddle (Fig. 8C).
Remarks
Stroborineceras felis gen. et sp. nov. differs from S. insalahensis gen. et sp. nov. by the less depressed whorl profile (ww/wh ~ 1.25 in S. felis gen. et sp. nov. but ~ 1.55 in S. insalahensis gen. et sp. nov.), by the concave venter (flattened or weakly convex in S. felis gen. et sp. nov.) and by the considerably weaker spiral lines (coarse and sharp in S. insalahensis gen. et sp. nov.).
description: Published as part of Korn, Dieter & Bockwinkel, Jürgen, 2022, Early Carboniferous nautiloids from the Central Sahara, southern Algeria, pp. 67-108 in European Journal of Taxonomy 831 on pages 78-79, DOI: 10.5852/ejt.2022.831.1871, http://zenodo.org/record/6885198
Coupling nanomechanical cantilevers to dipolar molecules
Creators: name: Singh, S.
name: Bhattacharya, M.
name: Dutta, O.
name: Meystre, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the coupling of a nanomechanical oscillator in the quantum regime with molecular (electric) dipoles. We find theoretically that the cantilever can produce single-mode squeezing of the center-of-mass motion of an isolated trapped molecule and two-mode squeezing of the phonons of an array of molecules. This work opens up the possibility of manipulating dipolar crystals, which have been recently proposed as quantum memory, and more generally, is indicative of the promise of nanoscale cantilevers for the quantum detection and control of atomic and molecular systems.
description: 3 figures, 4pages
TKS V. Twin sub-Neptunes Transiting the Nearby G Star HD 63935
Creators: name: Scarsdale, Nicholas
name: Murphy, Joseph M. Akana
name: Batalha, Natalie M.
name: Crossfield, Ian J. M.
name: Dressing, Courtney D.
name: Fulton, Benjamin
name: Howard, Andrew W.
name: Huber, Daniel
name: Isaacson, Howard
name: Kane, Stephen R.
name: Petigura, Erik A.
name: Robertson, Paul
name: Roy, Arpita
name: Weiss, Lauren M.
name: Beard, Corey
name: Behmard, Aida
name: Chontos, Ashley
name: Christiansen, Jessie L.
name: Ciardi, David R.
name: Claytor, Zachary R.
name: Collins, Karen A.
name: Collins, Kevin I.
name: Dai, Fei
name: Dalba, Paul A.
name: Dragomir, Diana
name: Fetherolf, Tara
name: Fukui, Akihiko
name: Giacalone, Steven
name: Gonzales, Erica J.
name: Hill, Michelle L.
name: Hirsch, Lea A.
name: Jensen, Eric L. N.
name: Kosiarek, Molly R.
name: de Leon, Jerome P.
name: Lubin, Jack
name: Lund, Michael B.
name: Luque, Rafael
name: Mayo, Andrew W.
name: Močnik, Teo
name: Mori, Mayuko
name: Narita, Norio
name: Nowak, Grzegorz
name: Pallé, Enric
name: Rabus, Markus
name: Rosenthal, Lee J.
name: Rubenzahl, Ryan A.
name: Schlieder, Joshua E.
name: Shporer, Avi
name: Stassun, Keivan G.
name: Twicken, Joe
name: Wang, Gavin
name: Wohler, Bill
name: Yahalomi, Daniel A.
name: Jenkins, Jon
name: Latham, David W.
name: Ricker, George R.
name: Seager, S.
name: Vanderspek, Roland
name: Winn, Joshua N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the discovery of two nearly identically-sized sub-Neptune transiting planets orbiting HD 63935, a bright ($V=8.6$ mag), sun-like ($T_{eff}=5560K$) star at 49 pc. TESS identified the first planet, HD 63935 b (TOI-509.01), in Sectors 7 and 34. We identified the second signal (HD 63935 c) in Keck HIRES and Lick APF radial velocity data as part of our followup campaign. It was subsequently confirmed with TESS photometry in Sector 34 as TOI-509.02. Our analysis of the photometric and radial velocity data yields a robust detection of both planets with periods of $9.0600 \pm 0.007$ and $21.40 \pm 0.0019$ days, radii of $2.99 \pm 0.14$ and $2.90 \pm 0.13$ $R_\oplus$, and masses of $10.8 \pm 1.8$ and $11.1 \pm 2.4$ $M_\oplus$. We calculate densities for planets b and c consistent with a few percent of the planet mass in hydrogen/helium envelopes. We also describe our survey's efforts to choose the best targets for JWST atmospheric followup. These efforts suggest that HD 63935 b will have the most clearly visible atmosphere of its class. It is the best target for transmission spectroscopy (ranked by Transmission Spectroscopy Metric, a proxy for atmospheric observability) in the so-far uncharacterized parameter space comprising sub-Neptune-sized (2.6 $R_\oplus$ $
description: 22 pages, 12 figures, published in AJ
Chaotic Scattering in the Regime of Weakly Overlapping Resonances
Creators: name: Dietz, B.
name: Friedrich, T.
name: Harney, H. L.
name: Miski-Oglu, M.
name: Richter, A.
name: Schaefer, F.
name: Weidenmueller, H. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We measure the transmission and reflection amplitudes of microwaves in a resonator coupled to two antennas at room temperature in the regime of weakly overlapping resonances and in a frequency range of 3 to 16 GHz. Below 10.1 GHz the resonator simulates a chaotic quantum system. The distribution of the elements of the scattering matrix S is not Gaussian. The Fourier coefficients of S are used for a best fit of the autocorrelation function if S to a theoretical expression based on random--matrix theory. We find very good agreement below but not above 10.1 GHz.
The Monitor project: JW 380 -- a 0.26, 0.15 Msol pre main sequence eclipsing binary in the Orion Nebula Cluster
Creators: name: Irwin, Jonathan
name: Aigrain, Suzanne
name: Hodgkin, Simon
name: Stassun, Keivan G.
name: Hebb, Leslie
name: Irwin, Mike
name: Moraux, Estelle
name: Bouvier, Jerome
name: Alapini, Aude
name: Alexander, Richard
name: Bramich, D. M.
name: Holtzman, Jon
name: Martin, Eduardo L.
name: McCaughrean, Mark J.
name: Pont, Frederic
name: Verrier, P. E.
name: Osorio, Maria Rosa Zapatero
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a low-mass (0.26 +/- 0.02, 0.15 +/- 0.01 Msol) pre-main-sequence eclipsing binary with a 5.3 day orbital period. JW 380 was detected as part of a high-cadence time-resolved photometric survey (the Monitor project) using the 2.5m Isaac Newton Telescope and Wide Field Camera for a survey of a single field in the Orion Nebula Cluster (ONC) region in V and i bands. The star is assigned a 99 per cent membership probability from proper motion measurements, and radial velocity observations indicate a systemic velocity within 1 sigma of that of the ONC. Modelling of the combined light and radial velocity curves of the system gave stellar radii of 1.19 +0.04 -0.18 Rsol and 0.90 +0.17 -0.03 Rsol for the primary and secondary, with a significant third light contribution which is also visible as a third peak in the cross-correlation functions used to derive radial velocities. The masses and radii appear to be consistent with stellar models for 2-3 Myr age from several authors, within the present observational errors. These observations probe an important region of mass-radius parameter space, where there are currently only a handful of known pre-main-sequence eclipsing binary systems with precise measurements available in the literature.
description: 11 pages, 9 figures, accepted for publication in MNRAS
The management of an international joint venture : the case of the long beach coal terminal
Creators: name: Olsen, Laurence Roach
Publisher: name: University of British Columbia
Year: 2010

description: Personalized Blocking is one method of allocating flight crew (pilots and flight attendants) to the various flights operated by an airline. An existing computer system for Personalized Blocking is the focus of the study. This system, which is used by CP AIR in Vancouver, has a number of weaknesses inherent in the basic algorithms. These shortcomings are analyzed in detail and suggestions for their solution are given. For two of the three weaknesses analyzed, the solutions suggested have been implemented. The problem of Personalized Blocking is described in terms of a Binary Integer Linear Program. The shortcomings in the system are described in terms of some simple examples. Simple algorithms are used to indicate deficiencies in the original system and to analyze solutions for these deficiencies. Comparison of results using the original system and the revised system are presented. Recommendations for further improvements to the system are made.
Weisskopf units for neutron-proton pair transfers
Creators: name: Lay, J. A.
name: Ayyad, Y.
name: Macchiavelli, A. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We introduce the concept of neutron-proton two-particle units ($np$-Weisskopf units) to be used in the analysis of the ($^3$He,$p)$ and $(p,^3$He) \added{reactions on nuclei} along the N=Z line. These are presented for the conditions relevant to the $(n,j,\ell$) orbits expected from $^{16}$O to $^{100}$Sn. As is the case of the Weisskopf units for electromagnetic transitions, the $np$-WU's will provide a simple, yet robust, measure of isoscalar and isovector $np$ pairing collective effects.
description: 5 pages, 3 figures
Two-spin subsystem entanglement in spin 1/2 rings with long range interactions
Creators: name: Gaudiano, M.
name: Osenda, O.
name: Raggio, G. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the two-spin subsystem entanglement for eigenstates of the Hamiltonian \[ H= \sum_{1\leq j< k \leq N} (\frac{1}{r_{j,k}})^α {\mathbf σ}_j\cdot {\mathbf σ}_k \] for a ring of $N$ spins 1/2 with asssociated spin vector operator $(\hbar /2){\bf σ}_j$ for the $j$-th spin. Here $r_{j,k}$ is the chord-distance betwen sites $j$ and $k$. The case $α=2$ corresponds to the solvable Haldane-Shastry model whose spectrum has very high degeneracies not present for $α\neq 2$. Two spin subsystem entanglement shows high sensistivity and distinguishes $α=2$ from $α\neq 2$. There is no entanglement beyond nearest neighbors for all eigenstates when $α=2$. Whereas for $α\neq 2$ one has selective entanglement at any distance for eigenstates of sufficiently high energy in a certain interval of $α$ which depends on the energy. The ground state (which is a singlet only for even $N$) does not have entanglement beyond nearest neighbors, and the nearest neighbor entanglement is virtually independent of the range of the interaction controlled by $α$.
description: 16 figures
Convergence of generalized Orlicz norms with lower growth rate tending to infinity
Creators: name: Bertazzoni, Giacomo
name: Harjulehto, Petteri
name: Hästö, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 49J45 (46E35)

description: We study convergence of generalized Orlicz energies when the lower growth-rate tends to infinity. We generalize results by Bocea--Mihăilescu (Orlicz case) and Eleuteri--Prinari (variable exponent case) and allow weaker assumptions: we are also able to handle unbounded domains with irregular boundary and non-doubling energies.
Opere della fortificazione permanente della frontiera orientale Architetture, tecniche costruttive e prospettive di recupero
Creators: name: Petriccione, Livio
Publisher: name: La Rivista di Engramma
Year: 2021
Subjects: Fortification
Bunker
Cold War
Concrete
Hypogeum

description: The article presents the research results concerning the architectural and construction issues of the military fortifications built during the Cold War. These buildings, conceived as a ‘diffused and continuous’ defensive system, strongly characterized the landscape of Friuli Venezia Giulia. Developed by scientific accuracy, the study concerns the technical features and the placement distributed along the eastern border. It began with the analysis of the original projects, now declassified, then examining in an organic and correlated way, the typological and formal characteristics, materials and building technologies. Lastly, the possible refurbishment and reuse of this particular heritage are analysed.
Phase diagram for quantum Hall states in graphene
Creators: name: Wang, Jianhui
name: Iyengar, A.
name: Fertig, H. A.
name: Brey, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate integer and half-integer filling states (uniform and unidimensional stripe states respectively) for graphene using the Hartree-Fock approximation. For fixed filling factor, the ratio between the scales of the Coulomb interaction and Landau level spacing $g=(e^2/ε\ell)/(\hbar v_F/\ell)$, with $\ell$ the magnetic length, is a field-independent constant. However, when $B$ decreases, the number of filled negative Landau levels increases, which surprisingly turns out to decrease the amount of Landau level mixing. The resulting states at fixed filling factor $ν$ (for $ν$ not too big) have very little Landau level mixing even at arbitrarily weak magnetic fields. Thus in the density-field phase diagram, many different phases may persist down to the origin, in contrast to the more standard two dimensional electron gas, in which the origin is surrounded by Wigner crystal states. We demonstrate that the stripe amplitudes scale roughly as $B$, so that the density waves ``evaporate'' continuously as $B\to 0$. Tight-binding calculations give the same scaling for stripe amplitude and demonstrate that the effect is not an artifact of the cutoff procedure used in the continuum calculations.
description: 9 pages, 6 figures, 3 tables, submitted to Physical Review B
ЗАКРЕПЛЕНИЕ КОНСТИТУЦИОННЫХ ПРИНЦИПОВ В УГОЛОВНОМ ПРАВЕ ИСПАНИИ
Creators: name: ШЕСТАК Виктор Анатольевич
name: ПЛУТАЛОВСКАЯ Юлия Александровна
Publisher: name: Образование и право
Year: 2020
Subjects: принципы права
уголовное право
конституционное право
доктрина
Испания
правовое государство

description: В статье проанализированы материальные и процессуальные принципы, закрепленные в Конституции 1978 г. и Уголовном кодексе Испании и составляющие основу испанского уголовного права. Авторы рассматривают природу принципов права с точки зрения испанской правовой доктрины, выделяют особенности и закономерности закрепления правовых принципов в Основном законе Испании и Уголовном кодексе. Актуальность подобного исследования обусловлена фундаментальным значением конституционных принципов в уголовной сфере, особенно в контексте становления демократического правового государства. Рассмотрены такие принципы, как законность, равенство граждан перед законом; запрет дискриминации; принцип физической и моральной неприкосновенности; запрет пыток и бесчеловечного и унижающего достоинство обращения; принцип охраны и защиты прав и свобод; принцип неприкосновенности жилища; право на тайну переписки, телеграфной, почтовой и телефонной связи; право на юридическую защиту; принцип устности и публичности (гласности) судебного разбирательства; презумпция невиновности; принцип независимости и несменяемости судей; отправление правосудия только судом; принцип вины. Произведенное исследование позволяет сделать вывод о перечислении в законодательстве Испании базовых принципов уголовного права и, таким образом, о закреплении основ правового государства.
Angular emission patterns of remnant black holes
Creators: name: Li, Xiang
name: Sun, Ling
name: Lo, Rico Ka Lok
name: Payne, Ethan
name: Chen, Yanbei
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The gravitational radiation from the ringdown of a binary black hole merger is described by the solution of the Teukolsky equation, which predicts both the temporal dependence and the angular distribution of the emission. Many studies have explored the temporal feature of the ringdown wave through black hole spectroscopy. In this work, we further study the spatial distribution, by introducing a global fitting procedure over both temporal and spatial dependences, to propose a more complete test of General Relativity. We show that spin-weighted spheroidal harmonics are the better representation of the ringdown angular emission patterns compared to spin-weighted spherical harmonics. The differences are distinguishable in numerical relativity waveforms. We also study the correlation between progenitor binary properties and the excitation of quasinormal modes, including higher-order angular modes, overtones, prograde and retrograde modes. Specifically, we show that the excitation of retrograde modes is dominant when the remnant spin is anti-aligned with the binary orbital angular momentum. This study seeks to provide an analytical strategy and inspire the future development of ringdown test using real gravitational wave events.
description: 35 pages (17 in the main text), 25 figures (13 in the main text)
title: Energy Poverty in Europe – a forsaken problem with many facets: A case study of energy-poor households in Luxembourg
Creators: name: Michel, Mèlanie
Publisher: name: TU Wien
Year: 2021
Subjects: subject: energy poverty
subject: sustainable growth
subject: energy justice
subject: socio-economic energy
subject: Luxembourg

description: The socio-economic problem of energy poverty has received wide recognition, especially since 1991 (European Commission n.d.b), through the development of the first unofficial definition by Dr Brenda Broadman (Moore 2012, 19). However, in Luxembourg, the wealthiest EU country, the problem of energy poverty lacks serious awareness and research. The in adequate approach to this complex issue by politicians and researchers alike led to the creation of a massive data gap. The importance of tackling energy povertylies in its multidimensional nature, as this social issue directly ties to financial injustice,social exclusion, and climate change. Consequently, this socio-economic issue seriously hinders social and sustainable development as it triggers social exclusion, increases vulnerability, and reduces well-being.This study aims to paint a picture of the specificities of energy poverty in Luxembourg,what indicators have been applied till now, expose the energy poverty data gap that has developed due to lacking research and political initiative, and intends to uncover what life as an energy-poor household is like, specifically regarding behavioural changes triggered by precariousness. An extensive literature review was performed combined with in-person interviews with individuals affected by energy poverty and vulnerability toget insight into Luxembourg's specificities of energy poverty. An in-depth analysis of the interview responses was undertaken by using energy poverty indicators and statistical concepts.The results suggest that the conditions of the Luxembourgish housing market,specifically the inadequate handling of the housing crisis, is a key component of the energy poverty in Luxembourg. Existing research and the interviewees of this small-scale investigation have reported the following problems that contribute to the worsening of energy poverty and social exclusion in Luxembourg: a severe lack of policies regarding real estate speculation, property taxation and housing quality, a lack of sanctions for landlords who exploit tenants, especially the lower-income ones, a shame fulundersupply of low-cost, social and public housing, unscathed racism and discrimination on the housing market, and, lastly, limited financial aid programs combined with inefficient bureaucratic processes. Luxembourg’s failing housing policy has proven the limits of the free-market and neo-liberal notions when it comes to closing the gap between rich and poor. On this basis, the concept of inclusive and sustainable growth needs to be considered when designing mitigation policies to combat energy poverty.
Metzgeria pubescens Raddi 1818
Creators: name: Sukkharak, Phiangphak
name: Chantanaorrapint, Sahut
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Marchantiophyta
Jungermanniopsida
Metzgeriales
Metzgeriaceae
Metzgeria
Metzgeria pubescens

description: Metzgeria pubescens (Schrank) Raddi (1818: 35).
Basionym:— Jungermannia pubescens Schrank (1792: 231).
Type: AUSTRIA.“An feuchten, schattingen Kalkfelsen der Gebirge um Salzburg.” Sauter [Rabenh., Hep. Europ. (Exs.) no. 84] (neotype: W designated by Grolle & So (2002)).
Metzgeria pubescens, like M. kinabaluensis, is distinguishing by pointed straight hairs densely covering both surfaces of thallus and margin. The species is widely Holarctic (Masuzaki et al. 2010). In Thailand, M. pubescens was reported as Apometzgeria pubescens by Kitakawa (1969). Although the specimen referable to M. pubescens in Thailand is not available for this study, the phytogeographical distribution suggests that it belongs to M. kinabaluensis. Metzgeria pubescens, therefore, is excluded from the country.
description: Published as part of Sukkharak, Phiangphak & Chantanaorrapint, Sahut, 2020, The liverwort genus Metzgeria (Metzgeriaceae, Marchantiophyta) in Thailand, pp. 251-262 in Phytotaxa 441 (3) on page 260, DOI: 10.11646/phytotaxa.441.3.2, http://zenodo.org/record/13872573
The Cosmic Horseshoe: Discovery of an Einstein Ring around a Giant Luminous Red Galaxy
Creators: name: Belokurov, V.
name: Evans, N. W.
name: Moiseev, A.
name: King, L. J.
name: Hewett, P. C.
name: Pettini, M.
name: Wyrzykowski, L.
name: McMahon, R. G.
name: Smith, M. C.
name: Gilmore, G.
name: Sanchez, S. F.
name: Udalski, A.
name: Koposov, S.
name: Zucker, D. B.
name: Walcher, C. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of an almost complete Einstein ring of diameter 10" in Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5). Spectroscopic data from the 6m telescope of the Special Astrophysical Observatory reveals that the deflecting galaxy has a line-of-sight velocity dispersion in excess of 400 km/s and a redshift of 0.444, whilst the source is a star-forming galaxy with a redshift of 2.379. From its color and luminosity, we conclude that the lens is an exceptionally massive Luminous Red Galaxy (LRG) with a mass within the Einstein radius of 5 x 10^12 solar masses. This remarkable system provides a laboratory for probing the dark matter distribution in LRGs at distances out to 3 effective radii, and studying the properties of high redshift star-forming galaxies.
description: ApJ (Letters), in press
The eosinophilic variant of chronic myeloid leukemia
Creators: name: Langabeer, Stephen E.
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: chronic myeloid leukemia
eosinophilic variant
tyrosine kinase inhibitor

description: EXCLI Journal; 20:Doc1608; ISSN 1611-2156