cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Slow quench dynamics of Mott-insulating regions in a trapped Bose gas
Creators: name: Bernier, Jean-Sebastien
name: Poletti, Dario
name: Barmettler, Peter
name: Roux, Guillaume
name: Kollath, Corinna
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the dynamics of Mott-insulating regions of a trapped bosonic gas as the interaction strength is changed linearly with time. The bosonic gas considered is loaded into an optical lattice and confined to a parabolic trapping potential. Two situations are addressed: the formation of Mott domains in a superfluid gas as the interaction is increased, and their melting as the interaction strength is lowered. In the first case, depending on the local filling, Mott-insulating barriers can develop and hinder the density and energy transport throughout the system. In the second case, the density and local energy adjust rapidly whereas long range correlations require longer time to settle. For both cases, we consider the time evolution of various observables: the local density and energy, and their respective currents, the local compressibility, the local excess energy, the heat and single particle correlators. The evolution of these observables is obtained using the time-dependent density-matrix renormalization group technique and comparisons with time-evolutions done within the Gutzwiller approximation are provided.
description: 15 pages, 13 figures
Magnetized Black Hole on Taub-Nut Instanton
Creators: name: Nedkova, Petya G.
name: Yazadjiev, Stoytcho S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an exact solution to the 5D Einstein-Maxwell-dilaton equations describing a static black hole on Taub-Nut instanton. By construction the solution does not possess a charge, but is magnetized along the compact dimension. As a limit we obtain a new regular solution representing a magnetized Kaluza- Klein monopole. We investigate the relevant physical properties and derive the Smarr-like relations.
description: 14 pages, 1 figure
Recommendations For The Transition To Open Access In Austria / Empfehlungen Für Die Umsetzung Von Open Access In Österreich
Creators: name: Expert Group "National Strategy" Of The Open Access Network Austria (OANA)
name: Universities Austria (Uniko)
Publisher: name: Zenodo
Year: 2016
Subjects: Open Access
Open Science
Open Access Network Austria (OANA)
Universities Austria (uniko)
Austria

description: Based on 16 recommendations, efforts should be made to achieve the following goal:

By 2025, a large part of all scholarly publication activity in Austria should be Open Access. In other words, the final versions of most scholarly publications (in particular all refereed journal articles and conference proceedings) resulting from the support of public resources must be freely accessible on the Internet without delay (Gold Open Access). This goal should be pursued by taking into account the different disciplinary practices and under consideration of the different disciplinary priorisations of Open Access. The resources required to meet this obligation shall be provided to the authors, or the cost of the publication venues shall be borne directly by the research organisations. The necessary funding must be brought in line with the overall funding priorities for research.

Basierend auf 16 Empfehlungen wird empfohlen, folgendes Ziel anzustreben:

Bis 2025 ist ein Gutteil der wissenschaftlichen Publikationstätigkeit in Österreich auf Open Access umgestellt. Das bedeutet, dass die meisten wissenschaftlichen Publikationen (insbesondere referierte Zeitschriftenartikel und Konferenzschriften), die aus Unterstützung mit öffentlichen Mitteln hervorgegangen sind, ohne Zeitverzögerung und in der finalen Version im Internet frei zugänglich sind (Gold Open Access). Dieses Ziel ist unter Berücksichtigung der unterschiedlichen disziplinären Gepflogenheiten und unter Bedachtnahme unterschiedlicher disziplinärer Priorisierungen von Open Access voranzutreiben. Die dafür notwendigen Mittel werden den AutorInnen zur Verfügung gestellt oder die Kosten der Publikationsorgane werden direkt von den Wissenschaftsorganisationen getragen. Die Finanzierung ist in Einklang mit der Priorisierung von Forschungsförderung zu bringen.
description: The first version, published on 30/11/2015, represents recommendations of the expert group "National Strategy" of the Open Access Network Austria (OANA), see: http://dx.doi.org/10.5281/zenodo.34079
This version, published on 23/5/2016, includes amendments of Universities Austria (uniko).

Die erste Version, publiziert am 15.11.2015, stellt die Empfehlungen der ExpertInnengruppe "National Strategie" des Open Access Network Austria dar, siehe: http://dx.doi.org/10.5281/zenodo.33178
Diese Version, publiziert am 23.05.2016, beinhaltet Ergänzungen der Österreichischen Universitätenkonferenz (uniko).
SMA detection of an extreme millimeter flare from the young class III star HD 283572
Creators: name: Lovell, Joshua Bennett
name: Keating, Garrett K.
name: Wilner, David J.
name: Andrews, Sean M.
name: MacGregor, Meredith
name: Rahman, Ramisa Akther
name: Rao, Ramprasad
name: Williams, Jonathan P.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present evidence of variable 1.3 millimeter emission from the 1-3 Myr, SpT G2-G5 class III YSO, HD~283572. HD~283572 was observed on 8 dates with the Submillimeter Array between 2021 December and 2023 May, a total on-source time of 10.2 hours, probing a range of timescales down to 5.2 seconds. Averaging all data obtained on 2022 Jan 17 shows a 4.4 mJy ($8.8σ$) point source detection with a negative spectral index ($α{=}{-2.7}{\pm}1.2$), with peak emission rising to 13.8 mJy in one 3 minute span, and 25 mJy in one 29.7 second integration ($L_ν=4.7\times10^{17}$ erg s$^{-1}$ Hz$^{-1}$). Combining our data for the other 7 dates shows no detection, with an rms noise of 0.24 mJy beam$^{-1}$. The stochastic millimeter enhancements on time frames of seconds--minutes--hours with negative spectral indices are most plausibly explained by synchrotron or gyro-synchrotron radiation from stellar activity. HD 283572's 1.3 mm light-curve has similarities with variable binaries, suggesting HD 283572's activity may have been triggered by interactions with an as-yet undetected companion. We additionally identify variability of HD 283572 at 10 cm, from VLASS data. This study highlights the challenges of interpreting faint mm emission from evolved YSOs that may host tenuous disks, and suggests that a more detailed temporal analysis of spatially unresolved data is generally warranted. The variability of class III stars may open up new ground for understanding the physics of flares in the context of terrestrial planet formation.
description: Accepted for publication in ApJL. 12 pages, inc. 5 figures, 2 tables
Exoplanet Interior Retrievals: core masses and metallicities from atmospheric abundances
Creators: name: Bloot, Sanne
name: Miguel, Yamila
name: Bazot, Michaël
name: Howard, Saburo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The mass and distribution of metals in the interiors of exoplanets are essential for constraining their formation and evolution processes. Nevertheless, with only masses and radii measured, the determination of exoplanet interior structures is degenerate, and so far simplified assumptions have mostly been used to derive planetary metallicities. In this work, we present a method based on a state-of-the-art interior code, recently used for Jupiter, and a Bayesian framework, to explore the possibility of retrieving the interior structure of exoplanets. We use masses, radii, equilibrium temperatures, and measured atmospheric metallicities to retrieve planetary bulk metallicities and core masses. Following results on the giant planets in the solar system and recent development in planet formation, we implement two interior structure models: one with a homogeneous envelope and one with an inhomogeneous one. Our method is first evaluated using a test planet and then applied to a sample of 37 giant exoplanets with observed atmospheric metallicities from the pre-JWST era. Although neither internal structure model is preferred with the current data, it is possible to obtain information on the interior properties of the planets, such as the core mass, through atmospheric measurements in both cases. We present updated metal mass fractions, in agreement with recent results on giant planets in the solar system.
description: Accepted for publication in MNRAS
HDVIO: Improving Localization and Disturbance Estimation with Hybrid Dynamics VIO
Creators: name: Cioffi, Giovanni
name: Bauersfeld, Leonard
name: Scaramuzza, Davide
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Visual-inertial odometry (VIO) is the most common approach for estimating the state of autonomous micro aerial vehicles using only onboard sensors. Existing methods improve VIO performance by including a dynamics model in the estimation pipeline. However, such methods degrade in the presence of low-fidelity vehicle models and continuous external disturbances, such as wind. Our proposed method, HDVIO, overcomes these limitations by using a hybrid dynamics model that combines a point-mass vehicle model with a learning-based component that captures complex aerodynamic effects. HDVIO estimates the external force and the full robot state by leveraging the discrepancy between the actual motion and the predicted motion of the hybrid dynamics model. Our hybrid dynamics model uses a history of thrust and IMU measurements to predict the vehicle dynamics. To demonstrate the performance of our method, we present results on both public and novel drone dynamics datasets and show real-world experiments of a quadrotor flying in strong winds up to 25 km/h. The results show that our approach improves the motion and external force estimation compared to the state-of-the-art by up to 33% and 40%, respectively. Furthermore, differently from existing methods, we show that it is possible to predict the vehicle dynamics accurately while having no explicit knowledge of its full state.
Nahm equations in supersymmetric mechanics
Creators: name: Fedoruk, Sergey
name: Ivanov, Evgeny
name: Lechtenfeld, Olaf
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We elaborate on a novel model of N=4 supersymmetric mechanics with extra spin variables. A dynamical linear (1,4,3) multiplet is coupled to a "semi-dynamical" linear (3,4,1) multiplet representing spin degrees of freedom in a Wess-Zumino action. The unique coupling of these two multiplets relates the dynamical bosonic variable to an arbitrary harmonic function of the SU(2) triplet of spin variables. As we prove at the classical and quantum level, N=4 supersymmetry is equivalent to the Nahm equations for the spin variables, with the dynamical boson as evolution parameter. We treat in detail the one- and two-monopole as well as some special multi-monopole configurations. While one monopole exhibits superconformal OSp(4|2) symmetry and was worked out previously, only N=4, d=1 Poincare supersymmetry survives for multi-monopole configurations.
description: 1+30 pages
Additional file 1 of Semaphorin 3A mediated brain tumor stem cell proliferation and invasion in EGFRviii mutant gliomas
Creators: name: Higgins, Dominique M. O.
name: Maisel Caliva
name: Schroeder, Mark
name: Carlson, Brett
name: Pavan S. Upadhyayula
name: Milligan, Brian D.
name: Cheshier, Samuel H.
name: Weissman, Irving L.
name: Sarkaria, Jann N.
name: Meyer, Fredric B.
name: Henley, John R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer

description: Additional file 1: Supp. Fig. 1. Differentiation of xenografts results in upregulation of lineage markers for GFAP (A), β3-tubulin (B), and O4 (C), with absent Nrp1 (D) as shown by immunostaining (scale bar = 50um A-C; 100um D).
"Reality bites" : attitudes towards gender equality among Icelandic youth
Creators: name: Hjalmsdottir, Andrea
Publisher: name: University of British Columbia
Year: 2009

description: Time has been on the side of egalitarian gender attitudes in industrialized Western countries, and Iceland ranks among the highest nations in terms of economic, educational, political and health equality. Although the dominant discourses have supported the idea that gender equality has already been achieved, or will be with the aging and active participation of future generations, serious gender inequalities persist, including a wide gender pay gap and a relatively traditional division of household labour. In stark contrast with dominant discourse, this thesis supports recent research which has found that young people hold less egalitarian views on gender issues than older generations. While old-fashioned essentialist claims of natural gender remain muted in contemporary public discourse in Iceland, a new type of essentialism has emerged that combines conservative gender attitudes with neo-liberal ideas. This study documents attitudes towards gender equality among 10th grade students in Akureyri, Iceland, through a qualitative analysis of five focus group discussions: two all-boys and two all-girls groups plus one mixed group. The participants’ attitudes toward the gendered division of labour within the public and the private sphere are explored in light of the possible influences of pop culture and contemporary neo-liberal and postfeminist discourses.
Thermonuclear Type-I X-ray Bursts and Burst Oscillations from the Eclipsing AMXP Swift J1749.4-2807
Creators: name: Albayati, A. C.
name: Bult, P.
name: Altamirano, D.
name: Chenevez, J.
name: Guillot, S.
name: Güver, T.
name: Jaisawal, G. K.
name: Malacaria, C.
name: Mancuso, G. C.
name: Marino, A.
name: Ng, M.
name: Sanna, A.
name: Strohmayer, T. E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Swift J1749.4-2807 is the only known eclipsing accreting millisecond X-ray pulsar. In this paper, we report on 7 thermonuclear (Type-I) X-ray bursts observed by NICER during its 2021 outburst. The first 6 bursts show slow rises and long decays, indicative of mixed H/He fuel, whereas the last burst shows fast rise and decay, suggesting He-rich fuel. Time-resolved spectroscopy of the bursts revealed typical phenomenology (i.e., an increase in black body temperature during the burst rise, and steady decrease in the decay), however they required a variable $N_\mathrm{H}$. We found that the values of $N_\mathrm{H}$ during the bursts were roughly double those found in the fits of the persistent emission prior to each burst. We interpret this change in absorption as evidence of burst-disc interaction, which we observe due to the high inclination of the system. We searched for burst oscillations during each burst and detected a signal in the first burst at the known spin frequency of the neutron star (517.92 Hz). This is the first time burst oscillations have been detected from Swift J1749.4-2807. We further find that each X-ray burst occurs on top of an elevated persistent count rate. We performed time-resolved spectroscopy on the combined data of the bursts with sufficient statistics (i.e., the clearest examples of this phenomenon) and found that the black body parameters evolve to hotter temperatures closer to the onset of the bursts. We interpret this as a consequence of an unusual marginally stable burning process similar to that seen through mHz QPOs.
description: accepted for publication in MNRAS, 12 pages, 11 figures
A high-resolution extinction mapping technique for face-on disc galaxies
Creators: name: Vieira, Helena Faustino
name: Duarte-Cabral, Ana
name: Davis, Timothy A.
name: Peretto, Nicolas
name: Smith, Matthew W. L.
name: Querejeta, Miguel
name: Colombo, Dario
name: Anderson, Michael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new dust extinction technique with which we are able to retrieve parsec-scale gas surface density maps for entire nearby galaxies. The method measures the dust attenuation in optical bands on a pixel-by-pixel basis against a smoothed, reconstructed stellar distribution. The contribution of foreground light along the line-of-sight is calibrated using dust emission observations, assuming that the dust sits in a layer close to the mid-plane of the face-on galaxy. Here, we apply this technique to M51 (NGC 5194) as a proof-of-concept, obtaining a resolution of 0.14" (5 pc). Our dust (and gas) surface density map is consistent with independent dust- and CO-based studies at lower resolution. We find that discrepancies between our estimates of surface density and other studies stem primarily from the choice of dust model (i.e. different dust absorption coefficients). When assuming the same dust opacity law, our technique produces surface densities that are consistent with independent studies. This dust extinction technique provides us with gas surface density maps at an unprecedented resolution for full disc coverage studies of nearby galaxies. The resulting well-resolved spatial information opens the possibility for more in-depth examination of the influence of large-scale dynamics (and also stellar feedback mechanisms) on the interstellar medium at parsec-scales, and consequently star formation in nearby galaxies.
description: MNRAS accepted. 15 pages, 12 figures
The cell cycle phenotypes of polyhomeotic are due to loss of DNA damage checkpoints and are suppressed by the cohesin Pds5
Creators: name: Beck, Samantha Anne
Publisher: name: University of British Columbia
Year: 2009

description: The Polycomb group (PcG) are well known as epigenetic silencers of many target genes including important developmental regulators such as the Hox genes. PcG mutants also have mitotic phenotypes, though their cell cycle role is not understood. Depletion of the proximal isoform of the PcG protein Polyhomeotic (PhP) results in chromatin bridges during anaphase and telophase in embryos. PhP binds chromatin during S phase but not during mitosis in early embryos. As transcription rates of embryonic genes are low at this time, we suggest that PhP has a direct role in S phase. Time lapse imaging of php mutants reveals an acceleration of S phase timing, indicating that php regulates S phase length. Mutations in php do not affect DNA synthesis rates, but exhibit impaired ability to block cell cycle progression following exposure to x-rays, consistent with a role for PhP in the DNA damage response. PhP likely plays a direct role in the DNA damage checkpoint during S phase. PhP cofractionates and coimmunoprecipitates with the cohesin protein Pds5. Mutations in Pds5 suppress both the chromatin bridge phenotype and the S phase acceleration in php mutants. Other members of the core cohesin complex, with the exception of the cohesion establishment factor eco do not affect the chromatin bridge phenotype of php mutants. Despite this, the suppression of the S phase phenotypes of php is likely indirect, because Pds5 does not suppress the loss of the DNA damage response in php mutants. Instead, php is epistatic to Pds5 in the DNA damage response, which supports a role for php in the DNA damage checkpoint. The function of the complex containing Pds5 and PhP is likely related to silencing, as Pds5 strongly enhances the homeotic phenotypes of php, and Pds5 localizes to the Polycomb Group Response Elements (PREs) and promoter of the PcG target Ubx. This thesis demonstrates that PhP plays a role in the DNA damage checkpoint during S phase in addition to its role as an epigenetic silencer, and that Pds5 plays a role in silencing of Hox genes in addition to its role in the cell cycle.
Counting spanning trees in a small-world Farey graph
Creators: name: Zhang, Zhongzhi
name: Wu, Bin
name: Lin, Yuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The problem of spanning trees is closely related to various interesting problems in the area of statistical physics, but determining the number of spanning trees in general networks is computationally intractable. In this paper, we perform a study on the enumeration of spanning trees in a specific small-world network with an exponential distribution of vertex degrees, which is called a Farey graph since it is associated with the famous Farey sequence. According to the particular network structure, we provide some recursive relations governing the Laplacian characteristic polynomials of a Farey graph and its subgraphs. Then, making use of these relations obtained here, we derive the exact number of spanning trees in the Farey graph, as well as an approximate numerical solution for the asymptotic growth constant characterizing the network. Finally, we compare our results with those of different types of networks previously investigated.
description: Definitive version accepted for publication in Physica A
X-ray properties of two complementary samples of intermediate Seyfert galaxies
Creators: name: Barba, Benedetta Dalla
name: Foschini, Luigi
name: Berton, Marco
name: Crepaldi, Luca
name: Vietri, Amelia
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the X-ray spectral analysis of two complementary sets of intermediate Seyfert galaxies (ISs). Analyzing X-ray data, we estimate the hydrogen abundance $N_H$ and test its connection with the [O III] luminosity acquired from optical observations. The results confirm the conclusions drawn in a previous study concerning the lack of a direct correlation between the obscuration measure ($N_H$) and the intrinsic characteristics of the active nuclei ([O III] luminosity). Instead, we validate the existence of a correlation between the Seyfert type and the $N_H$ parameter, employing a separation threshold of approximately 10$^{22}$ atoms cm$^{-2}$. Simultaneously, our findings align with prior research, corroborating the relationship between X-ray luminosity and the [O III] luminosity.
Additional file 2 of Semaphorin 3A mediated brain tumor stem cell proliferation and invasion in EGFRviii mutant gliomas
Creators: name: Higgins, Dominique M. O.
name: Maisel Caliva
name: Schroeder, Mark
name: Carlson, Brett
name: Pavan S. Upadhyayula
name: Milligan, Brian D.
name: Cheshier, Samuel H.
name: Weissman, Irving L.
name: Sarkaria, Jann N.
name: Meyer, Fredric B.
name: Henley, John R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer

description: Additional file 2: Supp. Fig 2. BTSCs form invasive tumors in the brain. BTSCs injected into the brain of athymic nude mice formed highly invasive tumors, seen at low (A,B) and high power (C,D) magnification invading across the corpus callosum to the contralateral hemisphere with injection tract (B) and corpus callosum (C) marked by black and gray arrows, respectively. BTSCs also invade into surrounding brain parenchyma from the perimeter of the tumor mass with invading cells marked by white arrows at both low (B) and high (D) magnifications (green = BTSCs labeled with human specific marker STEM121; blue = DAPI labeling total nuclei).
Duffin-Kemmer-Petiau particles are bosons
Creators: name: Bennett, A. F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81S05

description: The parametrized Duffin-Kemmer-Petiau wave equation is formulated here for many relativistic particles of spin-0 or spin-1. The conventional second-quantized or Fock-space proof of the spin-statistics connection requires that the fields of creation and annihilation operators satisfy commutation relations subject to causality conditions. The conditions restrict entanglement to spacelike separations of the order of the Compton wavelength $\hbar/mc$. Relativistic quantum mechanics is used here to prove the symmetry of the wavefunctions for identical particles, following the nonrelativistic argument of Jabs (Found. Phys. 2010, v40, 776--792). First quantization does not require causal commutation relations, and so entanglement is unrestricted.
description: Published article with typographic corrections
Canmore corridor regional trails plan
Creators: name: McCully, Robert Allan
Publisher: name: University of Calgary
Year: 1978
Subjects: subject: GV 191.46 A4 M16 1978 Microfiche
subject: Recreation areas - Planning - Alberta - Canmore corridor
subject: Trails - Alberta - Canmore corridor

description: Bibliography: p. 160-171.
description: Participation in trail activities has increased greatly in the Calgary area. Although many miles of old paths and resource trails exist, they are under-utilized by recreationists as the locations are not generally known, and the trails lack maintenance and conformity with accepted trail standards. The Canmore Corridor was selected as an area with potential to satisfy a portion of the trail needs. This thesis formulates a plan for the development of non-motorized trails in the Canmore Corridor. Recreation use studies were reviewed to identify the trail types required. A survey of trail planning and development efforts indicated the elements necessary for successful trail implementation. The Canmore Corridor's potential for trail development was assessed by considering the following biophysical and cultural factors: topography, drainage, surficial landforms, soils, vegetation, fish and wildlife, climate, land ownership, land use, and historic resources. Criteria for locating trail corridors were established and design specifications outlined for hiking, interpretive, cross-country ski, equestrian, and bicycle trails. The writer conducted an inventory of existing trails and potential trail destinations. Utilizing an overlay mapping process, the areas and routes most sujtable for trail development were identifiect, by overlaying the important biophysical and cultural factors. Based on the results of this synthesis and the trail design criteria, a comprehensive system of 22 trail routes and corridors was proposed for development. The 22 routes were ranked according to development priority. A strategy was then recommended for the implementation of the regional trails plan.
Additional file 3 of Semaphorin 3A mediated brain tumor stem cell proliferation and invasion in EGFRviii mutant gliomas
Creators: name: Higgins, Dominique M. O.
name: Maisel Caliva
name: Schroeder, Mark
name: Carlson, Brett
name: Pavan S. Upadhyayula
name: Milligan, Brian D.
name: Cheshier, Samuel H.
name: Weissman, Irving L.
name: Sarkaria, Jann N.
name: Meyer, Fredric B.
name: Henley, John R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer

description: Additional file 3: Supp. Fig. 3. PCR analysis of mRNA from several GBM xenograft lines, demonstrating expression of Nrp1, PlxnA1, and Sema3A in all lines tested. The genetic background of each is listed below. Black arrows indicate faint bands. (uncropped gels presented in Supp Fig. 8)
Entropy production in non-equilibrium fluctuating hydrodynamics
Creators: name: Gradenigo, Giacomo
name: Puglisi, Andrea
name: Sarracino, Alessandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Fluctuating entropy production is studied for a set of linearly coupled complex fields. The general result is applied to non-equilibrium fluctuating hydrodynamic equations for coarse-grained fields (density, temperature and velocity), in the framework of model granular fluids. We find that the average entropy production, obtained from the microscopic stochastic description, can be expressed in terms of macroscopic quantities, in analogy with linear non-equilibrium thermodynamics. We consider the specific cases of driven granular fluids with two different kinds of thermostat and the homogeneous cooling regime. In all cases, the average entropy production turns out to be the product of a thermodynamic force and a current: the former depends on the specific energy injection mechanism, the latter takes always the form of a static correlation between fluctuations of density and temperature time-derivative. Both vanish in the elastic limit. The behavior of the entropy production is studied at different length scales and the qualitative differences arising for the different granular models are discussed.
description: 16 pages, 3 figures
Studies of ionospheric parameters by means of electron plasma lines observed by EISCAT
Creators: name: Guio, Patrick
Publisher: name: Zenodo
Year: 1998
Subjects: Langmuir waves
Incoherent Scattering
Wave dispersion relation
Ionosphere
Electron velocity distribution function
Suprathermal electron
Heat flow

description: This work presents a study of the electron plasma lines observed by the incoherent scatter radar EISCAT. The work is focusing on two parts. On one hand, the design of a plasma line experiment for the EISCAT system with an improved spatial resolution. On the other hand, the comparison of the plasma line data collected with the EISCAT radar with an improved model for the intensity and the Doppler frequency shift of the plasma lines. In order to improve the spatial resolution of the plasma line experiment we have designed the first experiment that implements the recent technique of alternating code. The experiment has been run successfully with an altitude resolution of 3 km as opposed to 40–50 km obtained with the conventional techniques. Because it is very difficult to construct a self-consistent model of the velocity distribution function encompassing all of the relevant energy range, we have made an ad hoc model by separating the distribution into two parts: the thermal and the supra-thermal population. The thermal population is represented by the Spitzer function that takes into account the effect of an electric field and/or a temperature gradient. The supra-thermal population is derived from the angular energy flux of the supra-thermal electrons calculated by a numerical electron transport model. A numerical code has been developed to calculate the dielectric function and the reduced one-dimensional velocity distribution for any arbitrary two-dimensional velocity distribution which are needed to model the intensity and the Doppler frequency shift of the plasma lines. We have been able to reproduce peculiar features of the intensity as well as the Doppler shift of the plasma lines with data collected with the EISCAT VHF radar. Especially, two sharp peaks in the supra-thermal distribution were identified as the signature of photo-ionisation of N2 and O and were observed in the measured data. The effect of the temperature gradient—which produces a decisive correction to the Doppler shift of the plasma lines—was taken into account more accurately than previously by numerical evaluation of the singular integrals rather than by the use of the first terms of a series expansion as done in other studies. This is important because it has allowed a model for the first time to reproduce accurately the intensity and the Doppler shift of the plasma line as measured by actual experiment.
Exotica in the Globular Cluster M4, Studied with Chandra, HST, and the VLA
Creators: name: Lugger, Phyllis M.
name: Cohn, Haldan N.
name: Heinke, Craig O.
name: Zhao, Jiaqi
name: Zhao, Yue
name: Anderson, Jay
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using the Hubble Ultraviolet Globular Cluster Survey (HUGS) and additional HST archival data, we have carried out a search for optical counterparts to the low-luminosity Chandra X-ray sources in the globular cluster M4 (NGC 6121). We have also searched for optical or X-ray counterparts to radio sources detected by the VLA. We find 24 new confident optical counterparts to Chandra sources for a total of 40, including the 16 previously identified. Of the 24 new identifications, 18 are stellar coronal X-ray sources (active binaries, ABs), the majority located along the binary sequence in a V-I colour-magnitude diagram and generally showing an H-alpha excess. In addition to confirming the previously detected cataclysmic variable (CV, CX4), we identify one confident new CV (CX76), and two candidates (CX81 and CX101). One MSP is known in M4 (CX12), and another strong candidate has been suggested (CX1); we identify some possible MSP candidates among optical and radio sources, such as VLA20, which appears to have a white dwarf counterpart. One X-ray source with a sub-subgiant optical counterpart and a flat radio spectrum (CX8, VLA31) is particularly mysterious. The radial distribution of X-ray sources suggests a relaxed population of average mass ~ 1.2 - 1.5 Msun. Comparing the numbers of ABs, MSPs, and CVs in M4 with other clusters indicates that AB numbers are proportional to cluster mass (primordial population), MSPs to stellar encounter rate (dynamically formed population), while CVs seem to be produced both primordially and dynamically.
description: 30 pages, 12 figures, 2 pages of supplementary material containing finding charts
Military-Civil Fusion Plan embedded in 13th Five Year Plan in China State Digitization
Creators: name: Jim, CPA
Publisher: name: Zenodo
Year: 2021
Subjects: coronavirus
military
China
PLA
military-civil fusion
censorship
information warfare

description: To understand coronavirus's development purpose and its relation with Chinese overall strategy in Military-Civil Fusion, please read the translation of Military-Civil Fusion Plan content embedded in 13th Five Year Plan in China State Digitization which were originally published in Chinese.
Dark matter halo occupation: environment and clustering
Creators: name: Croft, Rupert
name: Di Matteo, Tiziana
name: Khandai, Nishikanta
name: Springel, Volker
name: Jana, Anirban
name: Gardner, Jeffrey
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use a large dark matter simulation of a LambdaCDM model to investigate the clustering and environmental dependence of the number of substructures in a halo. Focusing on redshift z=1, we find that the halo occupation distribution is sensitive at the tens of percent level to the surrounding density and to a lesser extent to asymmetry of the surrounding density distribution. We compute the autocorrelation function of halos as a function of occupation, building on the finding of Wechsler et al. (2006) and Gao and White (2007) that halos (at fixed mass) with more substructure are more clustered. We compute the relative bias as a function of occupation number at fixed mass, finding a strong relationship. At fixed mass, halos in the top 5% of occupation can have an autocorrelation function ~ 1.5-2 times higher than the mean. We also compute the bias as a function of halo mass, for fixed halo occupation. We find that for group and cluster sized halos, when the number of subhalos is held fixed, there is a strong anticorrelation between bias and halo mass. Such a relationship represents an additional challenge to the halo model.
description: 13 pages, 10 figures, MNRAS submitted
Mapping Research Topics on PriceThe to Book Value (PBV) Ratio in Islamic and Conventional Banking: VOSviewer Bibliometric Study and Literature Review
Creators: name: Budianto, Eka Wahyu Hestya
name: Dewi, Nindi Dwi Tetria
Publisher: name: Zenodo
Year: 2023

description: This study aims to determine the research mapping regarding the Price to Book Value (PBV) ratio in Islamic and Conventional Banking using a mix-method approach, namely the VOSviewer bibliometric study and literature review. Data analysis techniques include: (1) mapping the distribution of journal publications around the PBV ratio; (2) mapping the results of the VOSviewer bibliometric visualization around the PBV ratio based on the number of clusters and their items; and (3) mapping research topics around the PBV ratio using a literature review study. The results showed that: (1) based on the distribution of journal publications, there were 385 journal publications regarding the PBV ratio; (2) based on the mapping of the VOSviewer bibliometric study, the network visualization results around the PBV ratio are divided into 4 clusters and 113 topic items; (3) based on the mapping of literature review studies, there are 27 topics around the influence of the PBV ratio and 61 topics about the determinants of the PBV ratio. The implications and contributions of this research are to map research topics around PBV ratios in Islamic and Conventional Banking which are often or rarely researched by researchers so that they can be a reference for subsequent researchers.
Microquasar Cyg X-3 -- a unique jet-wind neutrino factory?
Creators: name: Koljonen, Karri I. I.
name: Satalecka, Konstancja
name: Lindfors, Elina J.
name: Liodakis, Ioannis
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The origin of astrophysical neutrinos is one of the most debated topics today. Perhaps the most robust evidence of neutrino counterpart comes from supermassive black holes in active galactic nuclei associated with strongly collimated outflows, or jets, that can accelerate particles to relativistic energies and produce neutrinos through hadronic interactions. Similar outflows can also be found from X-ray binaries, or `microquasars', that consist of a neutron star or a stellar-mass black hole accreting matter from a non-degenerate companion star. In some cases, these systems can accelerate particles up to GeV energies implying an efficient acceleration mechanism in their jets. Neutrino production in microquasar jets can be expected with suitable conditions and a hadronic particle population. Microquasar Cyg X-3 is a unique, short orbital period X-ray binary hosting a Wolf-Rayet companion star with a strong stellar wind. The interaction of the dense stellar wind with a relativistic jet leads to particle collisions followed by high-energy gamma-ray and potentially neutrino emission. Here, using the 10-year neutrino candidate sample of the IceCube neutrino observatory, we find that the events with the highest spatial association with Cyg X-3 occur during short-lived high-energy gamma-ray flaring periods indicating the possible astrophysical nature of these events.
description: 5 pages, 2 figures, 1 table. This article has been accepted for publication in MNRAS published by Oxford University Press on behalf of the Royal Astronomical Society
Diagnostic line ratios in the IC 1805 optical gas complex
Creators: name: Lagrois, Dominic
name: Joncas, Gilles
name: Drissen, Laurent
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Large HII regions, with angular dimensions exceeding 10 pc, usually enclose numerous massive O-stars. Stellar winds from such stars are expected to play a sizeable role in the dynamical, morphological and chemical evolution of the targeted nebula. Kinematically, stellar winds remain hardly observable i.e., the typical expansion velocities of wind-blown bubbles being often confused with other dynamical processes also regularly found HII regions. However, supersonic shock waves, developed by stellar winds, should favor shock excitation and leave a well-defined spectral signature in the ionized nebular content. In this work, the presence of stellar winds, observed through shock excitation, is investigated in the brightest portions of the Galactic IC 1805 nebula, a giant HII region encompassing at least 10 O-stars from main-sequence O9 to giant and supergiant O4. The use of the imaging Fourier transform spectrometer SpIOMM enabled the simultaneous acquisition of the spectral information associated to the Halpha6563A, [NII]6548, 6584A, and [SII]6716, 6731A ionic lines. Diagnostic diagrams, first introduced by Sabbadin and collaborators, were used to circumscribe portions of the nebula likely subject to shock excitation from other areas dominated by photoionization. The gas compression, expected from supersonic shocks, is investigated by comparing the pre- and post-shocked material's densities computed from the [SII]/[SII] line ratio. The typical [NII]/[NII] line ratio slightly exceeds the theoretical value of 3 expected in low-density regimes. To explain such behavior, a scenario based on collisional de-excitations affecting the [NII]6548A line is proposed.
description: 22 pages, 19 figures, 1 table, Accepted for publication by MNRAS on November 11th 2011
The Ages and Metallicities of the Globular Clusters in the Sparkler
Creators: name: Adamo, Angela
name: Usher, Christopher
name: Pfeffer, Joel
name: Claeyssens, Adélaïde
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: JWST observations of the strongly lensed galaxy The Sparkler have revealed a population of gravitationally bound globular cluster (GC) candidates. Different analyses have resulted in broadly similar ages but significantly different metallicities, questioning the assembly history that has led to the formation of such a population. In this letter, we re-analyse the two sets of photometry available in the literature with the code MCMAME especially tailored to fit physical properties of GCs. We find the ages and metallicities from both datasets are consistent within 1 $σ$ uncertainties. A significant group of GCs is consistent with being old and metal poor ([Fe/H] $\sim -1.7$). For this group, the ages do not converge, hence, we conclude that they are definitively older than 1 Gyr and can be as old as the age of the Universe. The remaining GCs have younger ages and a metallicity spread. The ages and metallicities distribution of GCs in the Sparkler are consistent with those observed in Local Group's galaxies at similar lookback times. Comparing with predictions from E-MOSAICS simulations we confirm that the Sparkler GC population traces the self-enrichment history of a galaxy which might become a few times $10^9$ M$_{\odot}$ massive system at redshift $z = 0$
description: MNRAS letter, accepted for publication
Buoyancy Instabilities in a Weakly Collisional Intracluster Medium
Creators: name: Kunz, Matthew W.
name: Bogdanovic, Tamara
name: Reynolds, Christopher S.
name: Stone, James M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The intracluster medium of galaxy clusters is a weakly collisional, high-beta plasma in which the transport of heat and momentum occurs primarily along magnetic-field lines. Anisotropic heat conduction allows convective instabilities to be driven by temperature gradients of either sign, the magnetothermal instability (MTI) in the outskirts of non-isothermal clusters and the heat-flux buoyancy-driven instability (HBI) in their cooling cores. We employ the Athena MHD code to investigate the nonlinear evolution of these instabilities, self-consistently including the effects of anisotropic viscosity (i.e. Braginskii pressure anisotropy), anisotropic conduction, and radiative cooling. We highlight the importance of the microscale instabilities that inevitably accompany and regulate the pressure anisotropies generated by the HBI and MTI. We find that, in all but the innermost regions of cool-core clusters, anisotropic viscosity significantly impairs the ability of the HBI to reorient magnetic-field lines orthogonal to the temperature gradient. Thus, while radio-mode feedback appears necessary in the central few tens of kpc, conduction may be capable of offsetting radiative losses throughout most of a cool core over a significant fraction of the Hubble time. Magnetically-aligned cold filaments are then able to form by local thermal instability. Viscous dissipation during the formation of a cold filament produces accompanying hot filaments, which can be searched for in deep Chandra observations of nearby cool-core clusters. In the case of the MTI, anisotropic viscosity maintains the coherence of magnetic-field lines over larger distances than in the inviscid case, providing a natural lower limit for the scale on which the field can fluctuate freely. In the nonlinear state, the magnetic field exhibits a folded structure in which the field-line curvature and field strength are anti-correlated.
description: 20 pages, 20 figures, submitted to ApJ; Abstract abridged