cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A 1.2mm MAMBO/IRAM-30m Survey of Dust Emission from the Highest Redshift PSS Quasars
Creators: name: Omont, A.
name: Cox, P.
name: Bertoldi, F.
name: McMahon, R. G.
name: Carilli, C.
name: Isaak, K. G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report 250 GHz (1.2mm) observations of redshift > 3.8 quasars from the Palomar Sky Survey (PSS) sample, using the Max-Planck Millimetre Bolometer (MAMBO) array at the IRAM 30-metre telescope. Eighteen sources were detected and upper limits were obtained for 44 with 3-sigma flux density limits in the range 1.5-4 mJy. Adopting typical dust temperatures of 40-50K, we derive dust masses of ~10^8-10^9 M_sun and far-infrared luminosities of order 10^13 L_sun. We suggest that a substantial fraction of this luminosity arises from young stars, implying star formation rates approaching 10^3 M_sun/yr or more. The high millimetre detection rate supports current views on a connection between AGN and star forming activity, suggesting a parallel evolution of the central black hole and of the stellar core of a galaxy, although their growth-rate ratio seems higher than the mass ratio observed in nearby galaxies. The observed, exceptionally bright objects may trace the peaks of the primordial density field, the cores of future giant ellipticals
description: 11 pages, 3 Postscript figures, minor changes. Accepted for publication in Astronomy and Astrophysics Journal
The Global Content, Distribution, and Kinematics of Interstellar O VI in the Large Magellanic Cloud
Creators: name: Howk, J. Christopher
name: Sembach, Kenneth R.
name: Savage, Blair D.
name: Massa, Derck
name: Friedman, Scott D.
name: Fullerton, Alex W.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present FUSE observations of interstellar O VI absorption towards 12 early-type stars in the Large Magellanic Cloud (LMC). O VI 1031.926 Ang absorption at LMC velocities is seen towards all 12 stars. The observed columns are in the range log N(O VI)=13.9 to 14.6, with a mean of 14.37. The observations probe several sight lines projected onto known superbubbles, but these show relatively little (if any) enhancement in O VI column density compared to sight lines towards relatively quiescent regions of the LMC. The observed LMC O VI absorption is broad, with Gaussian dispersions of 30 to 50 km/sec, implying temperatures T
description: Accepted for publiction in the ApJ. 39 pages, including 9 figures and 6 tables. Version with full resolution figures available at http://fuse.pha.jhu.edu/~howk/Papers/
Fast Conformal Bootstrap and Constraints on 3d Gravity
Creators: name: Afkhami-Jeddi, Nima
name: Hartman, Thomas
name: Tajdini, Amirhossein
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The crossing equations of a conformal field theory can be systematically truncated to a finite, closed system of polynomial equations. In certain cases, solutions of the truncated equations place strict bounds on the space of all unitary CFTs. We describe the conditions under which this holds, and use the results to develop a fast algorithm for modular bootstrap in 2d CFT. We then apply it to compute spectral gaps to very high precision, find scaling dimensions for over a thousand operators, and extend the numerical bootstrap to the regime of large central charge, relevant to holography. This leads to new bounds on the spectrum of black holes in three-dimensional gravity. We provide numerical evidence that the asymptotic bound on the spectral gap from spinless modular bootstrap, at large central charge $c$, is $Δ_1 \lesssim c/9.1$.
description: 31 pages, 5 figures
Paraperithous gnathaulax
Creators: name: Çoruh, S.
name: Özbek, H.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Paraperithous
Paraperithous gnathaulax

description: Paraperithous gnathaulax (THOMSON 1877)
Body black; areolet rectangle, Intercubitus II. not interrupted (fig. 15a); IV. segments of metatibiae very short (fig. 15b); lower valves of ovipositor neither apically broadened nor concealing the apex of upper valve; upper valve with a dorsolateral row denticles (fig. 15c).
D i s t r i b u t i o n: Belgium, Bulgaria, Czech Republic, Finland, France, Germany, Great Britain, Hungary, Latvia, Norway, Poland, Romania, Russia, Slovakia, Sweden, Switzerland, The Netherlands (ANONYMOUS 2007).
M a t e r i a l: Erzurum: İspir, 1400 m, 8.VII.1994,. Kars: Sarıkamış, Karakurt, 1500 m, 15.VII.2003,, 19.VII.2003,.
 R e m a r k: this species obtained from Saperda populnea L. (Coleoptera: Cerambycidae) feeding on Populus spp. in Karakurt.
description: Published as part of Çoruh, S. & Özbek, H., 2008, A faunistic and systematic study on Pimplinae (Hymenoptera Ichneumonidae) in Eastern and Northeastern parts of Turkey, pp. 419-462 in Linzer biologische Beiträge 40 (1) on page 428, DOI: 10.5281/zenodo.5427877
The Palomar/MSU Nearby Star Spectroscopic Survey III: Chromospheric Activity, M-dwarf Ages and the Local Star Formation History
Creators: name: Gizis, J. E.
name: Reid, I. N.
name: Hawley, S. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high-resolution echelle spectroscopy of 676 nearby M dwarfs. Our measurements include radial velocities, equivalent widths of important chromospheric emission lines, and rotational velocities for rapidly rotating stars. We identify several distinct groups by their H alpha properties, and investigate variations in chromospheric activity amongst early (M0-M2.5) and mid (M3-M6) dwarfs. Using a volume-limited sample together with a relationship between age and chromospheric activity, we show that the rate of star formation in the immediate Solar Neighbourhood has been relatively constant over the last 4 Gyr. In particular our results are inconsistent with recent large bursts of star formation. We use the correlation between H alpha activity and age as a function of colour to set constraints on the properties of L and T dwarf secondary components in binary systems. We also identify a number of interesting stars, including rapid rotators, radial velocity variables, and spectroscopic binaries.
description: accepted for A.J., 80 pages with large tables
A note on the long neck principle and spectral width inequality of geodesic collar neighborhoods
Creators: name: Liu, Daoqiang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The main purpose of this short note is to derive some generalizations of the long neck principle and give a spectral width inequality of geodesic collar neighborhoods. Our results are obtained via the spinorial Callias operator approach. An important step is to introduce the relative Gromov-Lawson pair on a compact manifold with boundary, relative to a background manifold.
description: Final version, to appear in the Proceedings of the American Mathematical Society
Late time evolution of a nonminimally coupled scalar field system
Creators: name: Shahalam, M.
name: Myrzakulov, R.
name: Khlopov, Maxim Yu.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revisit the dynamics of a nonminimally coupled scalar field model in case of $F(ϕ)R$ coupling with $F(ϕ)= 1-ξϕ^2 $, and the potentials $V(ϕ) = V_0 (1+ ϕ^p)^2$, $V(ϕ)= V_0 e^{λϕ^2}$. We use an autonomous system to bring out new asymptotic regimes, and find stable de-Sitter solution. Under the chosen functional form of $F(ϕ)$ and steep exponential potentials, a true de-Sitter solution is trivially satisfied for which the equation of state $w_ϕ\simeq -1$, the effective gravitational constant $G_{eff}$ and field $ϕ$ are constant that has been missed in the power law case and our previous study.
description: 9 pages, 3 caption figures
Communicating The Business Model at a Swedish Start-Up: An Interpretive Study
Creators: name: Havemo, Emelie
Publisher: name: Journal of Business Models
Year: 2019

description: Purpose: Although the notion of articulating and communicating ideas is central to theories of business models, the current literature has scarcely explored how business models are used and communicated by practitioners. The label “business model” itself can both organize and construct beliefs and actions. The purpose of this paper is to explore the roles of practitioner-described business models by using an interpretive approach. Design/Methodology/Approach: The study is based on the case study of a Swedish technology start-up with a business model labelled “hardware plus software”. The firm’s conceptualizations of this business model in public and non-public sources were analysed in order to show how a practitioner-described business model was used. Findings and Contributions: The business model label can be used at different organizational levels using different levels of abstraction, and may include multiple—and sometimes conflicting—perspectives. The paper shows how a practitioner-defined business model label served as a communication device by supporting three roles: communicating strategy, learning from others, and articulating identity. Originality/Value: The study introduces the notion of the business model as a communication device by showing how the label itself both enables and constrains interpretations of the firm in practice. The finding of parallel representations contradicts the implicit assumption that firms refer to a “single business model” by showing the diversity of articulations of the business model depending on the time frame, the role of the communicator, and communication arenas.
description: Journal of Business Models, Årg. 7 Nr. 2 (2019): Journal of Business Models
High Resolution X-ray Spectroscopic Constraints on Cooling-Flow Models for Clusters of Galaxies
Creators: name: Peterson, J. R.
name: Kahn, S. M.
name: Paerels, F. B. S.
name: Kaastra, J. S.
name: Tamura, T.
name: Bleeker, J. A. M.
name: Ferrigno, C.
name: Jernigan, J. G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high resolution X-ray spectra of 14 putative cooling-flow clusters of galaxies obtained with the Reflection Grating Spectrometer on XMM-Newton. The clusters in the sample span a large range of temperatures and mass deposition rates. Various of these spectra exhibit line emission from O VIII, Ne X, Mg XII & XI, Al XIII & XII, Si XIV & XIII, N VII, and C VI as well as all Fe L ions. The spectra exhibit strong emission from cool plasma at just below the ambient temperature, $T_0$, down to $T_0/2$, but also exhibit a severe deficit of emission, relative to the predictions of the isobaric cooling-flow model at lower temperatures ($
description: 22 pages, 8 figures, submitted to ApJ
T-Branes and $G_2$ Backgrounds
Creators: name: Barbosa, Rodrigo
name: Cvetič, Mirjam
name: Heckman, Jonathan J.
name: Lawrie, Craig
name: Torres, Ethan
name: Zoccarato, Gianluca
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Compactification of M- / string theory on manifolds with $G_2$ structure yields a wide variety of 4D and 3D physical theories. We analyze the local geometry of such compactifications as captured by a gauge theory obtained from a three-manifold of ADE singularities. Generic gauge theory solutions include a non-trivial gauge field flux as well as normal deformations to the three-manifold captured by non-commuting matrix coordinates, a signal of T-brane phenomena. Solutions of the 3D gauge theory on a three-manifold are given by a deformation of the Hitchin system on a marked Riemann surface which is fibered over an interval. We present explicit examples of such backgrounds as well as the profile of the corresponding zero modes for localized chiral matter. We also provide a purely algebraic prescription for characterizing localized matter for such T-brane configurations. The geometric interpretation of this gauge theory description provides a generalization of twisted connected sums with codimension seven singularities at localized regions of the geometry. It also indicates that geometric codimension six singularities can sometimes support 4D chiral matter due to physical structure "hidden" in T-branes.
description: v2: 47 pages, 3 figures, references and clarifications added, typos corrected
Project Care: Empowering Elderly Chronic Disease Patients to Better Understand and Manage Their Treatment Plans Through Enhanced Patient-Centric Services and Systems
Creators: name: Choi, Suzanne
name: Rodriguez-Eng, Laura
Publisher: name: Carnegie Mellon University
Year: 2019
Subjects: Design

description: The purpose of this thesis project was to explore the relationship and communication between physicians, patients, and caregivers, and reexamine the implementation strategies for post-acute care treatment plans. Our goals were to understand (1) the difficulties that elderly patients with chronic conditions face (2) to design an intervention that would help them to better understand, implement, and manage their chronic conditions at home. The risk of developing a chronic condition, such as heart disease or diabetes, is based on both genetic makeup and lifestyle behaviors. While individuals are not able to control their genetic predisposition, it is widely known that common lifestyle behaviors, such as exercise and diet, can contribute to the reduced risk of the development and progression of chronic diseases. Effectiveness of communication and individualized planning greatly influence a patient’s motivation and ability to adhere to their treatment plans at home. However, due to the limited appointment time and infrequent interactions, healthcare providers struggle to gain a holistic understanding of their patients resulting in treatments and care that can feel impersonal. Based on this we looked to address “how might we empower elderly chronic patients to better understand and manage their treatment plan at home?” Through research and design, we discovered it starts by improving the patient-physician relationship through patient-centric services and systems that allow greater autonomy in their treatment plans, health, and lifestyles. Our project, Care Clinic, is a reimagining of the primary care clinic check-in process and waiting room experience. With digital touch points and a welcoming environment, Care Clinic provides an opportunity to gain a holistic picture of the patient, while encouraging positive and supportive social interactions, with the ultimate goal of improving the patient’s receptiveness, attitude and impression of their overall care.
Endromopoda arundinator
Creators: name: Çoruh, S.
name: Özbek, H.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Endromopoda
Endromopoda arundinator

description: Endromopoda arundinator (FABRICIUS) 1804
D i s t r i b u t i o n: Austria, Belgium, Belgium, Bulgaria, Corsica, Czech Republic, France, Germany, Great Britain, Hungary, Italy, Latvia, Moldova, Norway, Poland, Romania, Russia, Sardinia, Slovakia, Sweden, The Netherlands, former Yugoslavia, Near East, North Africa, Oriental Region (ANONYMOUS 2007).
M a t e r i a l: Erzurum: Kargapazarı Dağları, Radar Yolu, 2700 m, 25.VII.2001,, Pasinler, Tarımsal Araştırma Enstitüsü Arazisi, 1750 m, 22.IX.2003,, Kars: Sarıkamış, Karakurt, TCK Çeşmesi, 18.VIII.2004,.
description: Published as part of Çoruh, S. & Özbek, H., 2008, A faunistic and systematic study on Pimplinae (Hymenoptera Ichneumonidae) in Eastern and Northeastern parts of Turkey, pp. 419-462 in Linzer biologische Beiträge 40 (1) on page 429, DOI: 10.5281/zenodo.5427877
Value Creation in Business Models is Based on Intellectual Capital – and Only Intellectual Capital!
Creators: name: Nielsen, Christian
name: Dane-Nielsen, Henrik
Publisher: name: Journal of Business Models
Year: 2019

description: This chapter applies the lens of emergentism and emergent properties to the understanding of value propositions, value creation, value delivery and value realization. It argues that none of the building blocks typically asserted with business models are of any value without the underlying intellectual capital to apply them and furthers this understanding through a series of case examples. This chapter enhances our understanding of the role of intellectual capital in the value creation of business models and argues that intellectual capital is the foundation of business models.
description: Journal of Business Models, Årg. 7 Nr. 2 (2019): Journal of Business Models
Dynamical preparation of a topological state and out of equilibrium bulk boundary correspondence in a SSH chain under periodic driving
Creators: name: Bandyopadhyay, Souvik
name: Dutta, Amit
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Exploiting the possibility of temporal variation of the winding number, we have prepared a SSH chain in its {\it stroboscopic} topological state, starting from the trivial one, by application of a periodic perturbation. The periodic driving, we employ here, is adiabatically switched on to break the particle-hole symmetry and generate a chiral mass term in the effective Floquet Hamiltonian; consequently the Floquet Hamiltonian also gets deformed without crossing the gapless quantum critical point. The particle hole symmetry is subsequently restored in the Floquet Hamiltonian by adiabatically switching off a part of the periodic potential. Thereafter, the Floquet Hamiltonian develops a symmetry protected non-trivial topological winding number. Furthermore, we also observe stroboscopic topologically protected localised edge states in a long open chain and show that a bulk boundary correspondence survives a unitary non-equilibrium situation in 1D BDI Hamiltonians. Moreover, considering an extended SSH chain with higher neighbour hoppings, we dynamically prepare the system in a stroboscopic out-of-equilibrium topological insulator state starting from a metallic regime. At the same time, we establish the dynamical preparation of higher winding phases in an extended SSH chain with stroboscopic bulk-boundary correspondence in the non-equilibrium state of the system.
description: Expanded version; 11 pages, 6 figures
Dust-enshrouded Asymptotic Giant Branch Stars in the Solar Neighbourhood
Creators: name: Olivier, Enrico A.
name: Whitelock, Patricia
name: Marang, Fred
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A study is made of a sample of 58 dust-enshrouded Asymptotic Giant Branch (AGB) stars (including 2 possible post AGB stars), of which 27 are carbon-rich and 31 are oxygen-rich. These objects were originally identified by Jura & Kleinmann as nearby (within about 1 kpc of the sun) AGB stars with high mass-loss rates, greater than 1E-6 solar masses per year. Ground-based near-infrared photometry, data obtained by IRAS and kinematic data from the literature are combined to investigate the properties of these stars. The light amplitude in the near-infrared is found to be correlated with period, and this amplitude decreases with increasing wavelength. Statistical tests show that there is no reason to suspect any difference in the period distributions of the carbon- and oxygen-rich stars for periods less than 1000 days, and no carbon-rich star has a period longer than 1000 days. The colours are consistent with those of cool stars with evolved circumstellar dust-shells. Luminosities and distances are estimated using a period-luminosity relation. Mass-loss rates, estimated from the 60 micron fluxes, show a correlation with pulsation period and is tightly correlated with the K-[12] colour. The kinematics and scale-height of the sample shows that the sources with periods less than 1000 days must have low mass main-sequence progenitors. It is argued that the three oxygen-rich stars with periods over 1000 days probably had intermediate mass main-sequence progenitors with remaining stars having an average progenitor mass of about 1.3 solar masses. The average lifetime of stars in this phase is estimated to be about 4.0E4 years, indicating they will undergo at most one more thermal pulse before leaving the AGB.
description: 27 pages, 20 figures, accepted for MNRAS
Ring momentum distributions as a general feature of Vlasov dynamics in the synchrotron dominated regime
Creators: name: Bilbao, Pablo. J.
name: Ewart, Robert J.
name: Assunçao, Francisco
name: Silva, Thales
name: Silva, Luis O.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study how radiation reaction leads plasmas initially in kinetic equilibrium to develop features in momentum space, such as anisotropies and population inversion, resulting in a ring-shaped momentum distribution that can drive kinetic instabilities. We employ the Landau-Lifshiftz radiation reaction model for a plasma in a strong magnetic field, and we obtain the necessary condition for the development of population inversion, we show that isotropic Maxwellian and Maxwell-Jüttner plasmas, with thermal temperature $T>m_e c^2/\sqrt{3}$, will develop a ring-like momentum distribution. The timescales and features for forming ring-shaped momentum distributions, the effect of collisions and non-uniform magnetic fields are disscussed, and compared with typical astrophysical and laboratory plasmas parameters. Our results show the pervasiveness of ring-like momentum distribution functions in synchrotron dominated plasma conditions.
description: 10 pages, 3 Figures, Under consideration for PoP
H2 and CO emission from disks around TTauri and HerbigAe pre-main-sequence stars and from debris disks around young stars: warm and cold circumstellar gas
Creators: name: Thi, W. F.
name: van Dishoeck, E. F.
name: Blake, G. A.
name: van Zadelhoff, G. J.
name: Horn, J.
name: Becklin, E. E.
name: Mannings, V.
name: Sargent, A. I.
name: Ancke, M. E. van den
name: Natta, A.
name: Kessler, J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present ISO-SWS observations of H2 pure-rotational line emission from the disks around low and intermediate mass pre-main-sequence stars as well as from young stars thought to be surrounded by debris disks. We detect `warm' (T ~ 100-200 K) H2 gas around many sources, including tentatively the debris-disk objects. The mass of this warm gas ranges from ~1E-4 Solar mass up to 8E-3 Solar mass, and can constitute a non-negligible fraction of the total disk mass. Complementary single-dish 12CO 3-2, 13CO 3-2 and 12CO 6-5 observations have been obtained as well. These transitions probe cooler gas at T ~ 20-80 K. Most objects show a double-peaked CO emission profile characteristic of a disk in Keplerian rotation, consistent with interferometer data on the lower-J lines. The ratios of the 12CO 3-2/ 13CO 3-2 integrated fluxes indicate that 12CO 3-2 is optically thick but that 13CO 3-2 is optically thin or at most moderately thick. The 13CO 3-2 lines have been used to estimate the cold gas mass. If a H2/CO conversion factor of 1E4 is adopted, the derived cold gas masses are factors of 10-200 lower than those deduced from 1.3 millimeter dust emission assuming a gas/dust ratio of 100,in accordance with previous studies. The warm gas is typically 1-10 % of the total mass deduced from millimeter continuum emission, but can increase up to 100% or more for the debris-disk objects. Thus, residual molecular gas may persist into the debris-disk phase. No significant evolution in the H2, CO or dust masses is found for stars with ages in the range of 1E6-1E7 years, although a decrease is found for the older debris-disk star beta Pictoris. Existing models fail to explain the amount of warm gas quantitatively.
description: 49 pages, 14 figures, accepted for publication in ApJ main journal
Magnetic helicity in stellar dynamos: new numerical experiments
Creators: name: Brandenburg, A.
name: Dobler, W.
name: Subramanian, K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The theory of large scale dynamos is reviewed with particular emphasis on the magnetic helicity constraint in the presence of closed and open boundaries. In the presence of closed or periodic boundaries, helical dynamos respond to the helicity constraint by developing small scale separation in the kinematic regime, and by showing long time scales in the nonlinear regime where the scale separation has grown to the maximum possible value. A resistively limited evolution towards saturation is also found at intermediate scales before the largest scale of the system is reached. Larger aspect ratios can give rise to different structures of the mean field which are obtained at early times, but the final saturation field strength is still decreasing with decreasing resistivity. In the presence of shear, cyclic magnetic fields are found whose period is increasing with decreasing resistivity, but the saturation energy of the mean field is in strong super-equipartition with the turbulent energy. It is shown that artificially induced losses of small scale field of opposite sign of magnetic helicity as the large scale field can, at least in principle, accelerate the production of large scale (poloidal) field. Based on mean field models with an outer potential field boundary condition in spherical geometry, we verify that the sign of the magnetic helicity flux from the large scale field agrees with the sign of alpha. For solar parameters, typical magnetic helicity fluxes lie around 10^{47} Mx^2 per cycle.
description: 23 pages, 27 figures, Astron. Nachr
Finite propagation speed for solutions of the wave equation on metric graphs
Creators: name: Kostrykin, Vadim
name: Potthoff, Jürgen
name: Schrader, Robert
Publisher: name: Freie Universität Berlin
Year: 2012
Subjects: subject: 500 Naturwissenschaften und Mathematik::530 Physik

description: We provide a class of self-adjoint Laplace operators −Δ on metric graphs with the property that the solutions of the associated wave equation satisfy the finite propagation speed property. The proof uses energy methods, which are adaptations of corresponding methods for smooth manifolds.
On the formation of a $33\,M_{\odot}$ black hole in a low-metallicity binary
Creators: name: El-Badry, Kareem
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A $33\,M_\odot$ black hole (BH) was recently discovered in an 11.6-year binary only 590 pc from the Sun. The system, Gaia BH3, contains a $0.8\,M_\odot$ low-metallicity giant ($\rm [M/H]=-2.2$) that is a member of the ED-2 stellar stream. This paper investigates whether the system could have formed via isolated binary evolution. I construct evolutionary models for metal-poor massive stars with initial masses ranging from $35-55\,M_{\odot}$, which reach maximum radii of $1150-1800\,R_{\odot}$ as red supergiants. I then explore what combinations of initial orbit, mass loss, and natal kick can produce the period and eccentricity of Gaia BH3. Initial orbits wide enough to accommodate the BH progenitor as a red supergiant can match the observed period and eccentricity, but only if the BH formed with a significant natal kick ($v_{\rm kick}\gtrsim 20\, {\rm km\,s^{-1}}$). These models are disfavored because such a kick would have ejected the binary from the ED-2 progenitor cluster. I conclude that Gaia BH3 likely formed through dynamical interactions, unless the BH progenitor did not expand to become a red supergiant. Only about 1 in 10,000 stars in the solar neighborhood have metallicities as low as Gaia BH3. This suggests that BH companions are dramatically over-represented at low-metallicity, though caveats related to small number statistics apply. The fact that the luminous star in Gaia BH3 has been a giant -- greatly boosting its detectability -- only for $\sim$1% of the time since the system's formation implies that additional massive BHs remain to be discovered with only moderately fainter companions. Both isolated and dynamically-formed BH binaries with orbits similar to Gaia BH3 are likely to be discovered in Gaia DR4.
description: 9 pages, 5 figures, accepted to OJAp. Significant changes since v1
title: Assessing the Impact of a Transforming Care Initiative in the Australian Context
Creators: name: Burston, Sarah Elizabeth Ann
Publisher: name: Griffith University
Year: 2015
Subjects: subject: Nursing care
subject: Pressure ulcers
subject: Inpatiient accidents

description: Hospitalised patients experience harm as a consequence of adverse events, including inpatient falls and hospital-acquired pressure ulcers. Nurses are attempting to address this situation with the development of international initiatives aimed at improving the safety and quality of nursing care. Evidence to support the implementation of these initiatives is limited, yet widespread implementation continues. The aim of this study was to understand the implementation, impact and sustainment of an initiative to transform nursing care in four acute medical-surgical units. The focus of the initiative was to provide a patient centred framework to improve the safety and quality of nursing care. A number of interventions were implemented such as clinical bedside handover and rounding. This study was conducted in two phases. Phase One used a non-equivalent control group design with historical controls and an uncontrolled interrupted time series. More than 10,000 patients discharged between July 2008 and December 2010 were included. Patients discharged during the initial three months of implementation, were excluded. Two nurse-sensitive indicators were used as outcome measures; inpatient falls and hospital-acquired pressure ulcers. Coded administrative data were analysed using statistical process control to identify changes in the nurse-sensitive indicators over time.
Urometopus asiaticus Colonnelli 2011, comb. nov.
Creators: name: Colonnelli, Enzo
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Urometopus
Urometopus asiaticus

description: Urometopus asiaticus (Formánek, 1910), comb. nov.
 Omias asiaticus Formánek, 1910: 242.
 Taxonomy. Roman Borovec (pers. comm.) drew my attention to the description of Omias asiaticus Formánek, 1910 which is surely an Urometopus because of its striate frons and epifrons (FORMÁNEK 1910). Although apparently the type (s) are not in the NMPC, possibly borrowed by someone, there is no doubt that this species must be moved to Urometopus as Urometopus asiaticus (Formánek, 1910), comb. nov. from Omias Germar, 1817.
description: Published as part of Colonnelli, Enzo, 2011, Notes on the taxonomy of Urometopus with description of a new species from northern Turkey (Coleoptera: Curculionidae), pp. 675-686 in Acta Entomologica Musei Nationalis Pragae 51 (2) on page 682, DOI: 10.5281/zenodo.5329638
Affordances for Multi-device Gestural Interactions in Augmented Reality
Creators: name: Shengzhi Wu
Publisher: name: Carnegie Mellon University
Year: 2019
Subjects: Design

description: This thesis research explores augmented reality (AR) gestural interface design for multi-device controls (e.g. smart lights, smart speakers, computer displays, tablets, etc.) This design problem encounters three significant challenges. First, AR gestural interface design is still an emerging technology, with which most users are not familiar. It, therefore, requires the design must communicate intuitively even to novice users. Second, people have various mental models of interacting with different devices, and the design needs to keep their mental model consistent. Third, gestural interfaces initially hold various constraints, such as inaccurate tracking, lack of tactile feedback, and more easily to cause user fatigue.

To address all those problems, this thesis adopts the existing theory of affordances to AR interaction design and explores the new potential design paradigms for future AR gestural interface. The study leverages a photo diary study for user inquiry, and designs 24 working prototypes for user testing and iterating. Ultimately I proposes five design recommendations that can inspire future work in this domain. The recommendations include a five-element framework for managing perceived affordances in AR, a conceptual model of hand-space and world-space interaction, harnessing metaphors and physical affordances for multi-device controls, and empowering the abstract with embodiment & materialization.
title: Health economic assessment of revision total knee replacement in Australia
Creators: name: Okafor, Charles E
Publisher: name: Griffith University
Year: 2023
Subjects: subject: knee revision
subject: arthroplasty
subject: economic evaluation
subject: registry

description: The growing burden and disability due to revision total knee arthroplasty (rTKA) is of concern to the patients, healthcare payers, healthcare providers, and health policymakers. The joint replacement registry (JRR) which is an observational data repository has a principal objective to define, improve and maintain the quality of arthroplasty outcomes. This thesis aimed to estimate the cost-of-illness of the disease in Australia for fiscal planning, the value-for-money of rTKA procedures, and the valuefor- money of the registry. [...]
Reactive Composition of UAV Delivery Services in Urban Environments
Creators: name: Lee, Woojin
name: Shahzaad, Babar
name: Alkouz, Balsam
name: Bouguettaya, Athman
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We propose a novel failure-aware reactive UAV delivery service composition framework. A skyway network infrastructure is presented for the effective provisioning of services in urban areas. We present a formal drone delivery service model and a system architecture for reactive drone delivery services. We develop radius-based, cell density-based, and two-phased algorithms to reduce the search space and perform reactive service compositions when a service failure occurs. We conduct a set of experiments with a real drone dataset to demonstrate the effectiveness of our proposed approach.
description: 14 pages, 18 figures. This is an accepted paper and it is going to appear in IEEE Transactions on Intelligent Transportation Systems (T-ITS)
Cosmology of Bianchi type-I metric using renormalization group approach for quantum gravity
Creators: name: Mandal, Rituparna
name: Gangopadhyay, Sunandan
name: Lahiri, Amitabha
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the anisotropic Bianchi type-I cosmological model at late times, taking into account quantum gravitational corrections in the formalism of the exact renormalization group flow of the effective average action for gravity. The cosmological evolution equations are derived by including the scale dependence of Newton's constant $G$ and cosmological constant $Λ$. We have considered the solutions of the flow equations for $G$ and $Λ$ at next to leading order in the infrared cutoff scale. Using these scale dependent $G$ and $Λ$ in Einstein equations for the Bianchi-I model, we obtain the scale factors in different directions. It is shown that the scale factors eventually evolve into FLRW universe for known matter like radiation. However, for dust and stiff matter we find that the universe need not evolve to the FLRW cosmology in general, but can also show Kasner type behaviour.
description: 20 pages Latex, manuscript revised and comments added
MOESM2 of Whole blood vs PBMC: compartmental differences in gene expression profiling exemplified in asthma
Creators: name: He, Daniel
name: Yang, Chen
name: Sahin, Basak
name: Singh, Amrit
name: Shannon, Casey
name: Oliveria, John-Paul
name: Gauvreau, Gail
name: Tebbutt, Scott
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2. Differentially expressed genes between allergic asthmatics and healthy controls in PBMC and whole blood samples. Comparison of gene expression between asthmatics and healthy controls using linear modeling (FDR cutoff set at 0.25).
Exclusion limits on the WIMP-nucleon cross-section from the Cryogenic Dark Matter Search
Creators: name: CDMS Collaboration
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Cryogenic Dark Matter Search (CDMS) employs low-temperature Ge and Si detectors to search for Weakly Interacting Massive Particles (WIMPs) via their elastic-scattering interactions with nuclei while discriminating against interactions of background particles. For recoil energies above 10 keV, events due to background photons are rejected with >99.9% efficiency, and surface events are rejected with >95% efficiency. The estimate of the background due to neutrons is based primarily on the observation of multiple-scatter events that should all be neutrons. Data selection is determined primarily by examining calibration data and vetoed events. Resulting efficiencies should be accurate to about 10%. Results of CDMS data from 1998 and 1999 with a relaxed fiducial-volume cut (resulting in 15.8 kg-days exposure on Ge) are consistent with an earlier analysis with a more restrictive fiducial-volume cut. Twenty-three WIMP candidate events are observed, but these events are consistent with a background from neutrons in all ways tested. Resulting limits on the spin-independent WIMP-nucleon elastic-scattering cross-section exclude unexplored parameter space for WIMPs with masses between 10-70 GeV c^{-2}. These limits border, but do not exclude, parameter space allowed by supersymmetry models and accelerator constraints. Results are compatible with some regions reported as allowed at 3-sigma by the annual-modulation measurement of the DAMA collaboration. However, under the assumptions of standard WIMP interactions and a standard halo, the results are incompatible with the DAMA most likely value at >99.9% CL, and are incompatible with the model-independent annual-modulation signal of DAMA at 99.99% CL in the asymptotic limit.
description: 40 pages, 49 figures (4 in color), submitted to Phys. Rev. D; v.2:clarified conclusions, added content and references based on referee's and readers' comments; v.3: clarified introductory sections, added figure based on referee's comments
Line-of-sight velocity distributions of low-luminosity elliptical galaxies
Creators: name: Halliday, C.
name: Davies, Roger L.
name: Kuntschner, Harald
name: Birkinshaw, M.
name: Bender, Ralf
name: Saglia, R. P.
name: Baggley, Glenn
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The shape of the line-of-sight velocity distribution (LOSVD) is measured for a sample of 14 elliptical galaxies, predominantly low-luminosity ellipticals. The sample is dominated by galaxies in the Virgo cluster but also contains ellipticals in nearby groups and low density environments. The parameterization of the LOSVD due to Gerhard and van der Marel and Franx is adopted, which measures the asymmetrical and symmetrical deviations of the LOSVD from a Gaussian by the amplitudes h3 and h4 of the Gauss-Hermite series. Rotation, velocity dispersion, h3 and h4 are determined as a function of radius for both major and minor axes. Non-Gaussian LOSVDs are found for all galaxies along the major axes. Deviations from a Gaussian LOSVD along the minor axis are of much lower amplitude if present at all. Central decreases in velocity dispersion are found for three galaxies. Two galaxies have kinematically-decoupled cores: NGC 4458 and the well-known case of NGC 3608.
description: Accepted for publication in MNRAS, 18 pages, 20 figures, LaTeX
Development of realistic simulations for the polarization of the cosmic microwave background
Creators: name: Monelli, Marta
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Polarization of the cosmic microwave background (CMB) can help probe cosmic inflation (via primordial $B$ modes) and test parity-violating physics (via cosmic birefringence), but realizing the potential of these opportunities requires precise control and mitigation of systematic effects. To this end, some experiments (including LiteBIRD) will use rotating half-wave plates (HWPs) as polarization modulators. Ideally, this choice should remove the $1/f$ noise component in the observed polarization and reduce intensity-to-polarization leakage, but any real HWP is characterized by non-idealities that, if not properly treated in the analysis, can lead to new systematics. In this thesis, after briefly introducing the science case, we discuss the macro steps that make up any CMB experiment, introduce the HWP, and present a new time-ordered data (TOD) simulation pipeline tailored to a LiteBIRD-like experiment that returns TOD and binned maps for realistic beams and HWPs. We show that the simulation framework can be used to study how the HWP non-idealities affect the measured cosmic birefringence angle, resulting in a few degrees bias for a realistic choice of HWP. We also derive analytical formulae to model the observed temperature and polarization maps and test them against the simulations. Finally, we present a simple, semi-analytical end-to-end model to propagate the non-idealities through the macro-steps that make up any CMB experiment (observation of multi-frequency maps, foreground cleaning, and power spectra estimation) and compute the HWP-induced bias on the estimated tensor-to-scalar ratio, $r$, finding that the HWP leads to underestimating $r$. We also show how gain calibration of the CMB temperature can be used to partially mitigate the non-idealities' effect and present a set of recommendations for the HWP design that can help maximize the benefits of gain calibration. [abridged]
description: PhD thesis. Abstract abridged for arXiv submission
Ressourcen sichtbar machen 2.0. Ein familienorientierter Ansatz für die Zusammenarbeit mit Eltern
Creators: name: Meister, Erna
name: Roth Carizzoni, Nicole
Publisher: name: Zenodo
Year: 2021
Subjects: Sonderpädagogik
Fototagebuch
Kindergarten
Studiengang Sonderpädagogik Vertiefungsrichtung Heilpädagogische Früherziehung
Masterarbeit

description: Der Begriff «Zusammenarbeit mit Eltern» verweist auf das Verständnis einer gleichwertigen Kooperation. Im Sinne der Familienorientierung als bewusste Ausrichtung auf das gewohnte Umfeld des Kindes wird ein gemeinsames digitales Fototagebuch entwickelt und in einem Kindergarten erprobt. Auf einer digitalen und passwortgeschützten Plattform teilen Eltern und Fachpersonen über einen bestimmten Zeitraum Fotos und kurze Videos des Kindes in einem engagierten Moment (Laevers, 2007). Das Kind äussert sich in einem Lerngespräch zu ausgewählten Fotos. Aus den Kommentaren des Kindes über sein Lernen und Können sowie den dazugehörigen Bildern wird anschliessend ein analoges «Könnerbuch» (Leu et al., 2010) erstellt. Das Produkt wird von Eltern, Fachpersonen und Autorinnen bewertet. Das Fototagebuch wird als attraktiv, effizient, vertrauensstärkend und wirkungsvoll für die weitere Förderung beurteilt.
Thermal conductivity of superfluid $^3$He-B in a tubular channel down to 0.1$T_c$ at the $^4$He crystallization pressure
Creators: name: Riekki, T. S.
name: Tuoriniemi, J. T.
name: Sebedash, A. P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We studied the thermal conductivity of superfluid $^3$He in a 2.5 mm effective diameter and 0.15 m long channel connecting the two volumes of our experimental assembly. The main volume contained pure solid $^4$He, pure liquid $^3$He and saturated liquid $^3$He-$^4$He mixture at varying proportions, while the separate heat-exchanger volume housed sinter and was filled by liquid $^3$He. The system was cooled externally by a copper nuclear demagnetization stage, and, as an option, internally by the adiabatic melting of solid $^4$He in the main volume. The counterflow effect of superfluid just below the transition temperature $T_c$ resulted in the highest observed conductivity about five times larger than that of the normal fluid at the $T_c$. Once the hydrodynamic contribution had practically vanished below $0.5T_c$, we first observed almost constant conductivity nearly equal to the normal fluid value at the $T_c$. Finally, below about $0.3T_c$, the conductivity rapidly falls off towards lower temperatures.
description: 11 pages, 4 figures, 1 table
Personal data as a resource to transform the business model in a service ecosystem
Creators: name: Huhtala, Tero Tapio
Publisher: name: Journal of Business Models
Year: 2019

description: Purpose - Services are evolving from generic to personalized, and the reverse use of customer data has been discussed in both academia and industry for the past few years. The aim of this study is to understand how personal data is working as a resource for business model transformation in emerging service ecosystems. Design/methodology/approach - The primary data was gathered over the time in the recorded and transcripted workshops, in which future personal data-based services were conceptualized by analyzing future scenarios from a business perspective. Findings - The results have implications to theory and practice, indicating that adopting personal data management principles requires transformation of the business model, which, if successfully managed, may provide access to more resources, potential to offer better value, and additional customer channels. Research limitations/implications – Being a single case study imposes restrictions to the generalizability of the results. Expanding the scope of this study to include actors from different sectors would improve the validity of the research. Social implications - The study views the future business landscape with human centered personal data management lenses. The exploration of the effects of an approach that benefits both people and businesses provides a positive societal aspect. Originality/value - While a few studies have examined the linkage between business models and personal data usage, no empirical studies have looked at how a company should change their business model due to new data access. This paper shows one way to think about this issue.
description: Journal of Business Models, Årg. 7 Nr. 2 (2019): Journal of Business Models