cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
2D kinematic signatures of boxy/peanut bulges
Creators: name: Iannuzzi, Francesca
name: Athanassoula, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the imprints of boxy/peanut structures on the 2D line-of-sight kinematics of simulated disk galaxies. The models under study belong to a family with varying initial gas fraction and halo triaxiality, plus few other control runs with different structural parameters; the kinematic information was extracted using the Voronoi-binning technique and parametrised up to the fourth order of a Gauss-Hermite series. Building on a previous work for the long-slit case, we investigate the 2D kinematic behaviour in the edge-on projection as a function of the boxy/peanut strength and position angle; we find that for the strongest structures the highest moments show characteristic features away from the midplane in a range of position angles. We also discuss the masking effect of a classical bulge and the ambiguity in discriminating kinematically this spherically-symmetric component from a boxy/peanut bulge seen end-on. Regarding the face-on case, we extend existing results to encompass the effect of a second buckling and find that this phenomenon spurs an additional set of even deeper minima in the fourth moment. Finally, we show how the results evolve when inclining the disk away from perfectly edge-on and face-on. The behaviour of stars born during the course of the simulations is discussed and confronted to that of the pre-existing disk. The general aim of our study is providing a handle to identify boxy/peanut structure and their properties in latest generation IFU observations of nearby disk galaxies.
description: 27 pages, 32 figures. Accepted for publication in MNRAS. High-resolution version and supplementary material will be available on the journal's website
Stacking point source search for a neutrino contribution at 22 track-like HESE positions using six years of IceCube data
Creators: name: Menne, Thorben
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Neutrinoastronomie
subject: Punktquelle
subject: Stacking
subject: Neutrino astronomy
subject: Point source
subject: IceCube
subject: 530
subject: Neutrinoastronomie
subject: Punktquelle
subject: IceCube

description: In this thesis, an approach is presented to probe the locations of track-like high energy starting events (HESE) for an additional clustering of neutrino events within six years of IceCube neutrino data at these positions. Two unbinned Likelihood stacking analyses using both a time-dependent, per-burst and a steady-state neutrino emission scenario are performed. This is done to be sensitive to a collection of weak fluxes, undetectable on their own and to test a rather broad regime of emission scenarios in the light of the unknown, underlying sources types. In both analyses, no significant excess of an additional neutrino contribution was found. However, a slight over-fluctuation of about 1 𝜎 in the largest tested time window, with a width of five days, and about 0.7 𝜎 in the time-integrated analysis is measured. This mildly indicates a connection to the recent measurement of a correlation between the flaring Blazar TXS 0506+056 and an extremely high energy neutrino starting event, where evidence was found for an additional neutrino emission on timescales of about 110 days, right in between the tested emission scenarios in this thesis.
description: In dieser Arbeit wird die Suche nach einem Neutrinofluss an den Positionen von hochenergetischen, im Detektor startenden Neutrinoereignissen, High Energy Starting Events (HESE), in sechs Jahren IceCube Neutrino Daten beschrieben. Es wird ein ungebinnter, gestackter Likelihood-Ansatz benutzt, um nach zusätzlichen Neutrinoereignissen zu suchen, die räumlich korreliert zu den HESE-Ereignissen erzeugt wurden. Da die potentiellen Quellen, aus denen die HESE Ereignisse stammen können unbekannt sind, wird sowohl ein zeitabhängiges, als auch ein stetiges Emissionsszenario getestet. In beiden Analysen konnte kein signifikantes Signal gefunden werden. Allerdings zeigt sowohl die zeitabhängige Messung mit etwa 1 𝜎 im größten getesteten Zeitfenster, mit einer Breite von fünf Tagen, als auch die zeitintegrierte Messung mit 0.7 𝜎 eine leichte Überfluktuation. Beide Ergebnisse lassen sich damit in den Rahmen der kürzlich entdeckten Korrelation eines extrem hochenergetischen Neutrinos und der erhöhten Aktivität des Blazars TXS 0506+056, bei der eine zusätzliche Neutrinoemission auf einer Zeitskala von etwa 110 Tagen nachgewiesen wurde, einfügen.
Strongly first-order electroweak phase transition by relatively heavy additional Higgs bosons
Creators: name: Kanemura, Shinya
name: Tanaka, Masanori
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss first-order electroweak phase transition in models with extended Higgs sectors for the case with relatively heavy additional scalar bosons. We first show that, by the combination of the sphaleron decoupling condition, perturbative unitarity and vacuum stability, mass upper bounds on additional scalar bosons can be obtained at the TeV scale even at the alignment limit where the lightest Higgs boson behaves exactly like the SM Higgs boson at tree level. We then discuss phenomenological impacts of the case with the additional scalar bosons with the mass near 1 TeV. Even when they are too heavy to be directly detected at current and future experiments at hadron colliders, the large deviation in the triple Higgs boson coupling can be a signature for first-order phase transition due to quantum effects of such heavy additional Higgs bosons. On the other hand, gravitational waves from the first-order phase transition are found to be weaker in this case as compared to that with lower masses of additional scalar bosons.
description: 24 pages, 5 figures, Version accepted for publication in Phys. Rev. D
Tunable non-Lifshitz-Kosevich temperature dependence of Shubnikov-de Haas oscillation amplitudes in SmSb
Creators: name: Zhang, Wei
name: Kuo, C. N.
name: Kuo, S. T.
name: So, Chun Wa
name: Xie, Jianyu
name: Lai, Kwing To
name: Yu, Wing Chi
name: Lue, C. S.
name: Po, Hoi Chun
name: Goh, Swee K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Lifshitz-Kosevich (LK) theory is the pillar of magnetic quantum oscillations, which have been extensively applied to characterize a wide range of metallic states. In this study, we focus on the Shubnikov-de Haas (SdH) effect observed in SmSb, a rare-earth monopnictide. We observed a significant departure from the expected LK theory near $T_N=2.4$~K: both a peak-like anomaly and an enhancement in the temperature dependence of quantum oscillation amplitude are seen in SmSb. Moreover, we discovered a remarkable sensitivity of the SdH amplitudes to sample purity. By adjusting the sample purity, we were able to tune the temperature dependence of the $α$ band's SdH amplitudes from a peak-like anomalous behavior to an enhancement. Therefore, SdH oscillations from the $α$ band connect the two well-known non-LK behaviours, controllable through varying the sample purity, paving the way for developing further understanding of the mechanism leading to the anomalous quantum oscillations.
description: 4 figures
Sensitivity of superconducting states to the impurity location in layered materials
Creators: name: Zinkl, Bastian
name: Ramires, Aline
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The family of multi-layered superconductors derived from the doped topological insulator Bi$_2$Se$_3$ has been found to be unusually robust against non-magnetic disorder. Recent experimental studies have highlighted the fact that the location of impurities could play a critical role for this puzzling robustness. Here we investigate the effects of four different types of impurities, on-site, interstitial, intercalated and polar, on the superconducting critical temperature. We find that different components of the scattering potential are active depending on the impurity configuration and choice of orbitals for the effective low-energy description of the normal state. For the specific case of Bi$_2$Se$_3$-based superconductors, we find that only the symmetric share of impurity configurations contribute to scattering, such that polar impurities are completely inactive. We also find that a more dominant mass-imbalance term in the normal-state Hamiltonian can make the superconducting state more robust to intercalated impurities, in contrast to the case of on-site or interstitial impurities.
Numerical Simulation of Focused Shock Shear Waves in Soft Solids and a Two-Dimensional Nonlinear Homogeneous Model of the Brain
Creators: name: Pinton,
name: Coulouvrat,
name: Giammarinaro,
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Shear waves that propagate in soft solids, such as the brain, are strongly nonlinear and can develop into shock waves in less than one wavelength. We hypothesize that these shear shock waves could be responsible for certain types of traumatic brain injuries (TBI) and that the spherical geometry of the skull bone could focus shear waves deep in the brain, generating diffuse axonal injuries. Theoretical models and numerical methods that describe nonlinear polarized shear waves in soft solids such as the brain are presented. They include the cubic nonlinearities that are characteristic of soft solids and the specific types of nonclassical attenuation and dispersion observed in soft tissues and the brain. The numerical methods are validated with analytical solutions, where possible, and with self-similar scaling laws where no known solutions exist. Initial conditions based on a human head X-ray microtomography (CT) were used to simulate focused shear shock waves in the brain. Three regimes are investigated with shock wave formation distances of 2.54 m, 0.018 m, and 0.0064 m. We demonstrate that under realistic loading scenarios, with nonlinear properties consistent with measurements in the brain, and when the shock wave propagation distance and focal distance coincide, nonlinear propagation can easily overcome attenuation to generate shear shocks deep inside the brain. Due to these effects, the accelerations in the focal are larger by a factor of 15 compared to acceleration at the skull surface. These results suggest that shock wave focusing could be responsible for diffuse axonal injuries.
Noise induced stabilization of chaotic free-running laser diode
Creators: name: Virte, Martin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In this paper, we investigate theoretically the stabilization of a free-running vertical-cavity surface-emitting laser exhibiting polarization chaos dynamics. We report the existence of a boundary isolating the chaotic attractor on one side and a steady-state on the other side, and identify the unstable periodic orbit playing the role of separatrix. In addition, we highlight a small range of parameters where the chaotic attractor passes through this boundary, and therefore where chaos only appears as a transient behaviour. Then, including the effect of spontaneous emission noise in the laser, we demonstrate that, for realistic levels of noise, the system is systematically pushed over the separating solution. As a result, we show that the chaotic dynamics cannot be sustained unless the steady-state on the other side of the separatrix becomes unstable. Finally, we link the stability of this steady-state to a small value of the birefringence in the laser cavity and discuss the significance of this result on future experimental work.
description: accepted manuscript in Chaos: An interdisciplinary journal of Nonlinear Science, 8 pages, 7 figures
การวิเคราะห์ปัจจัยขับเคลื่อนการเปลี่ยนแปลงการใช้ประโยชน์ที่ดินในพื้นที่ลุ่มน้ำลำเสียวน้อย
Creators: name: ศันสนีย์ อรัญวาสน์
Publisher: name: คณะบริหารการพัฒนาสิ่งแวดล้อม สถาบันบัณฑิตพัฒนบริหารศาสตร์
Year: 2022
Subjects: ปัจจัยขับเคลื่อน
การเปลี่ยนแปลงการใช้ที่ดิน
กรอบแนวคิดDPSIR
ลุ่มน้ำลำเสียวน้อย

description: วารสารการจัดการสิ่งแวดล้อม, 18, 2, 58-77
Papaver pinnatifidum Moris, Fl. Sardoa
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Ranunculales
Papaveraceae
Papaver
Papaver pinnatifidum

description: Papaver pinnatifidum Moris, Fl. Sardoa 1: 74(–75). 1837. [21–30 April 1837]
 Ind. Loc.:—“Inter segetes frequens”. [SAR]
 Type:—Not designated.
 Compiled by:— G. Vacca
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on page 121, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
Infrared Excess of a Large OB Star Sample
Creators: name: Deng, Dingshan
name: Sun, Yang
name: Wang, Tianding
name: Wang, Yuxi
name: Jiang, Biwei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The infrared excess from OB stars are commonly considered as contributions from ionized stellar wind or circumstellar dust. With the newly published LAMOST-OB catalog and GOSSS data, this work steps further on understanding the infrared excess of OB stars. Based on a forward modeling approach comparing the spectral slope of observational Spectral Energy Distributions (SED) and photospheric models, 1147 stars are found to have infrared excess from 7818 stars with good-quality photometric data. After removing the objects in the sightline of dark clouds, 532 ($\sim7\%$) B-type stars and 118 ($\sim23\%$) O-type stars are identified to be true OB stars with circumstellar infrared excess emission. The ionized stellar wind model and the circumstellar dust model are adopted to explain the infrared excess, and Bayes Factors are computed to quantitatively compare the two. It is shown that the infrared excess can be accounted for by the stellar wind for about 65\% cases in which 33\% by free-free emission and 32\% by synchrotron radiation. Other 30\% sources could have and 4\% should have a dust component or other mechanisms to explain the sharply increase flux at $λ> 10μ$m. The parameters of dust model indicate a large-scale circumstellar halo structure which implies the origin of the dust from the birthplace of the OB stars. A statistical study suggests that the proportion with infrared excess in OB stars increases with stellar effective temperature and luminosity, and that there is no systematic change of the mechanism for infrared emission with stellar parameters.
description: Accepted for publication in the ApJ (July 13, 2022). 17 pages, 9 figures. Typos corrected, authors info updated
Evidence From Intermediate-Depth Earthquakes of Slab-Derived Fluids Beneath the Taupō Volcanic Zone
Creators: name: Mark, OK
name: Illsley-Kemp, Finnigan
name: Townend, John
name: Barker, Simon
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2024
Subjects: classificationCode: 3705
subject: Geology
subject: FOS: Earth and related environmental sciences
classificationCode: 3706
subject: Geophysics
classificationCode: 37
subject: Earth sciences
classificationCode: 3703
subject: Geochemistry

description: Ahi Tupua, the central section of the Taupō Volcanic Zone in the central North Island of New Zealand, encompasses Taupō and Ōkataina calderas and has been the most frequently active and productive silicic magma system worldwide during the Quaternary. The entire Taupō Volcanic Zone is underlain by the Hikurangi Subduction Zone where a Large Igneous Province, the Hikurangi Plateau, is being subducted, but Ahi Tupua exhibits much higher rates of magma output than either the northern or the southern sections. Trace element signatures of Ahi Tupua eruptive products suggest that both decompression melting and flux melting play a role in this rifted arc setting, with fluid flux signatures being more prevalent in regions of active caldera volcanism. Intermediate-depth (50–300 km) earthquakes provide a means of studying faulting and fluid flow processes within and around the subducting slab beneath Ahi Tupua. Using data from the national seismic network and a 13-station temporary network (“ECLIPSE”), we repick and relocate 397 intermediate-depth earthquakes of magnitudes M2.5+ that occurred in a 29-month interval, and compute focal mechanisms for a subset of 47 earthquakes. We observe some seismicity that may be within the mantle wedge but most of the relocated earthquakes occur within the crust and uppermost mantle of the subducted slab and exhibit a weak transition from predominantly normal-faulting in the slab crust to predominantly reverse-faulting in the slab mantle. No double seismic zone is observed beneath Ahi Tupua. These observations are consistent with dehydration of the slab and flow of slab-derived fluids along existing faults into the mantle wedge, that drives flux melting and accounts for the distinctive geochemical signatures and voluminous output of Ahi Tupua calderas.
Self-organized lasers of reconfigurable colloidal assemblies
Creators: name: Trivedi, Manish
name: Saxena, Dhruv
name: Ng, Wai Kit
name: Sapienza, Riccardo
name: Volpe, Giorgio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Biological cells self-organize into living materials that uniquely blend structure with functionality and responsiveness to the environment. The integration of similar life-like features in man-made materials remains challenging, yet desirable to manufacture active, adaptive and autonomous systems. Here we show the self-organization of programmable random lasers from the reversible out-of-equilibrium self-assembly of colloids. Random lasing originates from the optical amplification of light undergoing multiple scattering within the dissipative colloidal assemblies and therefore is crucially dependent on their self-organization behavior. Under external light stimuli, these dynamic random lasers are responsive and present a continuously tunable laser threshold. They can thus reconfigure and cooperate by emulating the ever-evolving spatiotemporal relationship between structure and functionality typical of living matter.
Hyperuniform Jammed Sphere Packings Have Anomalous Material Properties
Creators: name: Dale, Jack R.
name: Sartor, James D.
name: Dennis, R. Cameron
name: Corwin, Eric I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A spatial distribution is hyperuniform if it has local density fluctuations that vanish in the limit of long length scales. Hyperuniformity is a well known property of both crystals and quasicrystals. Of recent interest, however, is disordered hyperuniformity: the presence of hyperuniform scaling without long-range configurational order. Jammed granular packings have been proposed as an example of disordered hyperuniformity, but recent numerical investigation has revealed that many jammed systems instead exhibit a complex set of distinct behaviors at long, emergent length scales. We use the Voronoi tesselation as a tool to define a set of rescaling transformations that can impose hyperuniformity on an arbitrary weighted point process, and show that these transformations can be used in simulations to iteratively generate hyperuniform, mechanically stable packings of athermal soft spheres. These hyperuniform jammed packings display atypical mechanical properties, particularly in the low-frequency phononic excitations, which exhibit an isolated band of highly collective modes and a band-gap around zero frequency.
Practice Reflection 1 - Working in a Team of Teams
Creators: name: Ozies, Jaala
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 470101
subject: Communication studies
classificationCode: 350707
subject: Leadership
classificationCode: 390403
subject: Educational administration, management and leadership
classificationCode: 350710
subject: Organisational behaviour
classificationCode: 330205
subject: Building organisational studies
classificationCode: 350713
subject: Project management

description: This reflective piece written in August 2024 during my Master of Social Work Studies at the University of Queensland, explores my role as a Coordinator at the UQ Neurodivergent Hub and my journey toward improving communication within a "team of teams" structure. The reflection highlights the challenges and opportunities associated with working within multiple teams that collectively contribute to the Hub's overarching goals. Through identifying gaps in communication, particularly due to my four-day work week, I initiated weekly updates to ensure transparency, accountability, and connection among team members and program participants. This practice not only enhances team cohesion but also supports the success and sustainability of our underfunded programs by keeping all stakeholders informed and engaged. The reflection underscores the importance of effective communication in fostering a supportive and collaborative environment and outlines my commitment to continuously improving my communication skills to better serve the UQ Neurodivergent Hub's strategic outcomes.
Lorentz contraction of the equal-time Bethe-Salpeter amplitude in two-dimensional massless quantum electrodynamics
Creators: name: Radozycki, Tomasz
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Lorentz transformation properties of the equal-time bound-state Bethe-Salpeter amplitude in the two-dimensional massless quantum electrodynamics (the so called Schwinger Model) are considered. It is shown that while boosting a bound state (a `meson') this amplitude is subject to approximate Lorentz contraction. The effect is exact for large separations of constituent particles (`quarks'), while for small distances the deviation is more significant. For this phenomenon to appear, the full} function, i.e. with the inclusion of all instanton contributions has to be considered. The amplitude in each separate topological sector does not exhibit such properties.
description: 9 pages, 4 figures, Revtex
Non-Invasive Ventilation in the Prehospital Emergency Setting: A Systematic Review and Meta-Analysis
Creators: name: Scquizzato, Tommaso
name: Imbriaco, Guglielmo
name: Moro, Federico
name: Losiggio, Rosario
name: Cabrini, Luca
name: Consolo, Filippo
name: Landoni, Giovanni
name: Zangrillo, Alberto
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Noninvasive ventilation is a well-established treatment for acute respiratory failure, being increasingly applied in the prehospital setting. This systematic review and meta-analysis aims to investigate whether early prehospital initiation of noninvasive ventilation reduces mortality compared to standard oxygen therapy. We searched PubMed, EMBASE, and the Cochrane Central Register of Controlled Trials from inception to February 7th, 2022, for studies comparing prehospital noninvasive ventilation performed by emergency medical services versus standard oxygen therapy in patients with acute respiratory failure. The primary outcome was mortality at the longest follow-up available. We included ten randomized studies and two quasi-randomized studies for a total of 1485 patients. Prehospital treatment with noninvasive ventilation compared with standard oxygen therapy did not significantly reduce mortality at the longest follow-up available (107/810 [13%] vs 114/772 [15%]; RR = 0.89; 95% CI, 0.70–1.13; P = 0.34; I2=24%). The endotracheal intubation rate was reduced when receiving prehospital noninvasive ventilation (38/776 [4.9%] vs 81/743 [11%]; RR = 0.44; 95% CI, 0.31–0.63; P < 0.001; I2=0%; number needed to treat 17). The intensive care admission rate (114/532 [21%] vs 129/507 [25%]; RR = 0.85; 95% CI, 0.69–1.04; P = 0.11; I2=0%) and length of hospital stay (mean difference=-1.29 days; 95% CI, −3.35–0.77; P = 0.21; I2=82%) were similar between groups. Adults with acute respiratory failure treated in the prehospital setting with noninvasive ventilation had a lower risk of intubation than those managed with standard oxygen therapy, with similar risk of death, intensive care admission, and length of hospital stay. PROSPERO CRD42021284947
Spectroscopic Confirmation of the Dwarf Galaxies Hydra II and Pisces II and the Globular Cluster Laevens 1
Creators: name: Kirby, Evan N.
name: Simon, Joshua D.
name: Cohen, Judith G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Keck/DEIMOS spectroscopy of stars in the recently discovered Milky Way satellites Hydra II, Pisces II, and Laevens 1. We measured a velocity dispersion of 5.4 (+3.6 -2.4) km/s for Pisces II, but we did not resolve the velocity dispersions of Hydra II or Laevens 1. We marginally resolved the metallicity dispersions of Hydra II and Pisces II but not Laevens 1. Furthermore, Hydra II and Pisces II obey the luminosity-metallicity relation for Milky Way dwarf galaxies ( = -2.02 +/- 0.08 and -2.45 +/- 0.07, respectively), whereas Laevens 1 does not ( = -1.68 +/- 0.05). The kinematic and chemical properties suggest that Hydra II and Pisces II are dwarf galaxies, and Laevens 1 is a globular cluster. We determined that two of the previously observed blue stars near the center of Laevens 1 are not members of the cluster. A third blue star has ambiguous membership. Hydra II has a radial velocity = 303.1 +/- 1.4 km/s, similar to the leading arm of the Magellanic stream. The mass-to-light ratio for Pisces II is 370 (+310 -240) M_sun/L_sun. It is not among the most dark matter-dominated dwarf galaxies, but it is still worthy of inclusion in the search for gamma rays from dark matter self-annihilation.
description: Accepted to ApJ. v2 has been revised in response to the referee's report
Imaging and simulation of Achilles tendon dynamics: Implications for walking performance in the elderly
Creators: name: Thelen, Darryl G.
name: Franz, Jason R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The Achilles tendon (AT) is a complex structure, consisting of distinct fascicle bundles arising from each triceps surae muscle that may act as mechanically independent structures. Advances in tissue imaging are rapidly accelerating our understanding of the complexities of functional Achilles tendon behavior, with potentially important implications for musculoskeletal injury and performance. In this overview of our recent contributions to these efforts, we present the results of complementary experimental and computational approaches to investigate AT behavior during walking and its potential relevance to reduced triceps surae mechanical performance due to aging. Our experimental evidence reveals that older tendons exhibit smaller differences in tissue deformations than young adults between regions of the AT presumed to arise from the gastrocnemius and soleus muscles. These observations are consistent with a reduced capacity for inter-fascicle sliding within the AT, which could have implications for the mechanical independence of the triceps surae muscles. More uniform AT deformations are also correlated with hallmark biomechanical features of elderly gait – namely, a loss of net ankle moment, power, and positive work during push-off. Simulating age-related reductions in the capacity for inter-fascicle sliding in the AT during walking predicts detriments in gastrocnemius muscle-tendon mechanical performance coupled with underlying shifts in fascicle kinematics during push-off. AT compliance, also suspected to vary due to age, systematically modulates those effects. By integrating in vivo imaging with computational modeling, we have gained theoretical insight into multi-scale biomechanical changes due to aging, hypotheses regarding their functional effects, and opportunities for experiments that validate or invalidate these assertions.
Bowen's equations for upper metric mean dimension with potential
Creators: name: Yang, Rui
name: Chen, Ercai
name: Zhou, Xiaoyao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Firstly, we introduce a new notion called induced upper metric mean dimension with potential, which naturally generalizes the definition of upper metric mean dimension with potential given by Tsukamoto to more general cases, then we establish variational principles for it in terms of upper and lower rate distortion dimensions and show there exists a Bowen's equation between induced upper metric mean dimension with potential and upper metric mean dimension with potential. Secondly, we continue to introduce two new notions, called BS metric mean dimension and Packing BS metric mean dimension on arbitrary subsets, to establish Bowen's equations for Bowen upper metric mean dimension and Packing upper metric mean dimension with potential on subsets. Besides, we also obtain two variational principles for BS metric mean dimension and Packing BS metric mean dimension on subsets. Finally, the special interest about the Bowen upper metric mean dimension of the set of generic points of ergodic measures are also involved.
description: many typos and mistakes are corrected
An Asymmetric SIMP Dark Matter Model
Creators: name: Ho, Shu-Yu
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper, we construct the first asymmetric strongly interacting massive particles (SIMP) dark matter (DM) model, where a new vector-like fermion and a new complex scalar both having nonzero chemical potentials can be asymmetric DM particles. After the spontaneous breaking of a U(1)$^{}_\textsf{D}$ dark gauge symmetry, these two particles can have accidental $\mathbb{Z}^{}_4$ charges making them stable. By adding one more complex scalar as a mediator between the SIMP DM, the relic density of DM is determined by $3 \to 2$ and two-loop induced $2 \to 2$ annihilations in this model. On the other hand, the SIMP DM can maintain kinetic equilibrium with the thermal bath until the DM freeze-out temperature via the new gauge interaction. Interestingly, this model can have a bouncing effect on DM, whereby the DM number density rises after the chemical freeze-out of DM. With this effect, the prediction of the DM self-interacting cross section in this model can be consistent with astrophysical observations, and the ratio of the DM energy density to the baryonic matter energy density can be explained by primordial asymmetries. We also predict the DM-electron elastic scattering cross section that can be used to test this model in future projected experiments.
description: 19 pages, 7 figures, 2 tables. Matches published version
Plantago cupanii Guss., Fl. Sicul. Prodr.
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Lamiales
Plantaginaceae
Plantago
Plantago cupanii

description: Plantago cupanii Guss., Fl. Sicul. Prodr. 1: 190. 1827. [1 October 1827]
 Ind. Loc.:—“In pascuis elatioribus montosis; Madonie, Monti di Mistretta, di Capizzi, di Caronia, di Montalbano, di Noara”. SIC
 Type:—Not designated.
 Note:—According to Arts. 60.8 & 60.9 of the ICN, the spelling of the specific epithet originally published as “ cupani ” is to be corrected in “ cupanii ”.
 Compiled by:— A. Santangelo
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on page 128, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
Ultraviolet ISM Diagnostics for Star-Forming Galaxies I. Tracers of Metallicity and Extinction
Creators: name: Zetterlund, Erika
name: Levesque, Emily M.
name: Leitherer, Claus
name: Danforth, Charles W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have observed a sample of 14 nearby ($z \sim 0.03$) star-forming blue compact galaxies in the rest-frame far-UV ($\sim1150-2200 Å$) using the Cosmic Origins Spectrograph on the Hubble Space Telescope. We have also generated a grid of stellar population synthesis models using the Starburst99 evolutionary synthesis code, allowing us to compare observations and theoretical predictions for the SiIV_1400 and CIV_1550 UV indices; both are comprised of a blend of stellar wind and interstellar lines and have been proposed as metallicity diagnostics in the UV. Our models and observations both demonstrate that there is a positive linear correlation with metallicity for both indices, and we find generally good agreement between our observations and the predictions of the Starburst99 models. By combining the rest-frame UV observations with pre-existing rest-frame optical spectrophotometry of our blue compact galaxy sample, we also directly compare the predictions of metallicity and extinction diagnostics across both wavelength regimes. This comparison reveals a correlation between the UV absorption and optical strong-line diagnostics, offering the first means of directly comparing ISM properties determined across different rest-frame regimes. Finally, using our Starburst99 model grid we determine theoretical values for the short-wavelength UV continuum slope, $β_{18}$, that can be used for determining extinction in rest-frame UV spectra of star-forming galaxies. We consider the implications of these results and discuss future work aimed at parameterizing these and other environmental diagnostics in the UV as well as the development of robust comparisons between ISM diagnostics across a broad wavelength baseline.
description: Accepted to ApJ. 26 pages, 6 figures, 8 tables
Feel the Tension: Manipulation of Deformable Linear Objects in Environments with Fixtures using Force Information
Creators: name: Süberkrüb, Finn
name: Laezza, Rita
name: Karayiannidis, Yiannis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Humans are able to manipulate Deformable Linear Objects (DLOs) such as cables and wires, with little or no visual information, relying mostly on force sensing. In this work, we propose a reduced DLO model which enables such blind manipulation by keeping the object under tension. Further, an online model estimation procedure is also proposed. A set of elementary sliding and clipping manipulation primitives are defined based on our model. The combination of these primitives allows for more complex motions such as winding of a DLO. The model estimation and manipulation primitives are tested individually but also together in a real-world cable harness production task, using a dual-arm YuMi, thus demonstrating that force-based perception can be sufficient even for such a complex scenario.
description: 2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Enhancing cosmic shear with the multi-scale lensing PDF
Creators: name: Giblin, Benjamin
name: Cai, Yan-Chuan
name: Harnois-Déraps, Joachim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We quantify the cosmological constraining power of the `lensing PDF' - the one-point probability density of weak lensing convergence maps - by modelling this statistic numerically with an emulator trained on $w$CDM cosmic shear simulations. After validating our methods on Gaussian and lognormal fields, we show that `multi-scale' PDFs - measured from maps with multiple levels of smoothing - offer considerable gains over two-point statistics, owing to their ability to extract non-Gaussian information: for a mock Stage-III survey, lensing PDFs yield 33\% tighter constraints on the clustering parameter $S_8=σ_8\sqrt{Ω_{\rm m}/0.3}$ than the two-point shear correlation functions. For Stage-IV surveys, we achieve $>$90\% tighter constraints on $S_8$, but also on the Hubble and dark energy equation of state parameters. Interestingly, we find improvements when combining these two probes only in our Stage-III setup; in the Stage-IV scenario the lensing PDFs contain all information from the standard two-point statistics and more. This suggests that while these two probes are currently complementary, the lower noise levels of upcoming surveys will unleash the constraining power of the PDF.
description: 18 pages, 9 figures, accepted for publication in MNRAS
Impact of H$_{\rm 2}$-driven star formation and stellar feedback from low-enrichment environments on the formation of spiral galaxies
Creators: name: Valentini, Milena
name: Dolag, Klaus
name: Borgani, Stefano
name: Murante, Giuseppe
name: Maio, Umberto
name: Tornatore, Luca
name: Granato, Gian Luigi
name: Ragone-Figueroa, Cinthia
name: Burkert, Andreas
name: Ragagnin, Antonio
name: Rasia, Elena
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The reservoir of molecular gas (H$_{\rm 2}$) represents the fuel for the star formation (SF) of a galaxy. Connecting the star formation rate (SFR) to the available H$_{\rm 2}$ is key to accurately model SF in cosmological simulations of galaxy formation. We investigate how modifying the underlying modelling of H$_{\rm 2}$ and the description of stellar feedback in low-metallicity environments (LMF, i.e. low-metallicity stellar feedback) in cosmological, zoomed-in simulations of a Milky Way-size halo influences the formation history of the forming, spiral galaxy and its final properties. We exploit two different models to compute the molecular fraction of cold gas (f$_{\rm H_{\rm 2}}$): $i)$ the theoretical model by Krumholz et al. (2009b) and $ii)$ the phenomenological prescription by Blitz & Rosolowsky (2006). We find that the model adopted to estimate f$_{\rm H_{\rm 2}}$ plays a key role in determining final properties and in shaping the morphology of the galaxy. The clumpier interstellar medium (ISM) and the more complex H$_{\rm 2}$ distribution that the Krumholz et al. (2009b) model predicts result in better agreement with observations of nearby disc galaxies. This shows how crucial it is to link the SFR to the physical properties of the star-forming, molecular ISM. The additional source of energy that LMF supplies in a metal-poor ISM is key in controlling SF at high redshift and in regulating the reservoir of SF across cosmic time. Not only is LMF able to regulate cooling properties of the ISM, but it also reduces the stellar mass of the galaxy bulge. These findings can foster the improvement of the numerical modelling of SF in cosmological simulations.
description: accepted for publication in MNRAS
Polygonum bellardii All., Fl. Pedem.
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Polygonaceae
Polygonum
Polygonum bellardii

description: Polygonum bellardii All., Fl. Pedem. 2: 207(–208; 3: 12, pl. 90 fig. 2). 1785. [April–July 1785]
 Ind. Loc.:—“In arvis inter Bussolino, e Bardassan primo vere florens” [after typification]. PIE
 Type (lectotype designated by Raffaelli 1979: 333):— ITALY. Inveni in campis Bardassani / prope vil[la] d. Medici Bauvani (TO).
 Note:—According to Arts. 60.8 & 60.9 of the ICN, the spelling of the specific epithet originally published as “ Bellardi ” is to be corrected in “ bellardii ”.
 Compiled by:— A. Alessandrini
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on page 131, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
Resonant $s$-channel dark matter annihilation at NLO
Creators: name: Laine, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Studies of dark matter annihilation through an $s$-channel resonance are often based on recipes such as a narrow width approximation or real intermediate state subtraction. We review a recipe-free formalism that can be implemented at the NLO level in the full theory, and ensures the cancellation of mass singularities. Its basic ingredients can be formulated in the relativistic regime, but we show that the procedure simplifies if we go to the non-relativistic one and assume the presence of kinetic equilibrium. The latter case is illustrated for scalar singlet dark matter with $m_{\rm S}^{ } \simeq 60$ GeV, freezing out at $T \simeq (1-3)$ GeV, re-confirming the viability of this scenario with couplings tiny enough to evade experimental constraints.
description: 20 pages. v2: typos fixed, clarifications added
Exactly Solvable 1D Quantum Models with Gamma Matrices
Creators: name: Chugh, Yash
name: Dhochak, Kusum
name: Divakaran, Uma
name: Narayan, Prithvi
name: Pal, Amit Kumar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we write exactly solvable generalizations of 1-dimensional quantum XY and Ising-like models by using $2^d$-dimensional Gamma ($Γ$) matrices as the degrees of freedom on each site. We show that these models result in quadratic Fermionic Hamiltonians with Jordan-Wigner like transformations. We illustrate the techniques using a specific case of 4-dimensional $Γ$ matrices and explore the quantum phase transitions present in the model.
description: 25 Pages, 4 Figures
สภาพปัจจุบันและสภาพที่พึงประสงค์ของการพัฒนาโรงเรียนสิ่งแวดล้อมศึกษา เพื่อการพัฒนาที่ยั่งยืน สังกัดสำนักงานเขตพื้นที่การศึกษามัธยมศึกษากรุงเทพมหานคร เขต 2
Creators: name: ชินกฤต ศรีสุข
Publisher: name: คณะบริหารการพัฒนาสิ่งแวดล้อม สถาบันบัณฑิตพัฒนบริหารศาสตร์
Year: 2022
Subjects: โรงเรียนสิ่งแวดล้อมศึกษา
การพัฒนาที่ยั่งยืน
มัธยมศึกษา

description: วารสารการจัดการสิ่งแวดล้อม, 18, 2, 78-95
Testing dark energy after pre-recombination early dark energy
Creators: name: Wang, Hao
name: Piao, Yun-Song
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the studies on pre-recombination early dark energy (EDE), the evolution of Universe after recombination is usually regarded as $ΛCDM$-like, which corresponds that the equation of state of dark energy responsible for current accelerated expansion is $w=-1$. However, in realistic models, $w$ might be evolving. We consider the parametrizations of $w$ with respect to the redshift $z$ in Axion-like EDE and AdS-EDE models, respectively. We performed the Monte Carlo Markov chain analysis with recent cosmological data, and found that the bestfit $w(z)$ is compatible with $w_0=-1,w_a=0$ (the cosmological constant) and the evolution of $w$ is only marginally favored, which so has little effect on lifting the bestfit value of ${H_0}$.
description: 18 pages, 7 figures