cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Extrema of Mass, First Law of Black Hole Mechanics and Staticity Theorem in Einstein-Maxwell-axion-dilaton Gravity
Creators: name: Rogatko, Marek
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using the ADM formulation of the Einstein-Maxwell axion-dilaton gravity we derived the formulas for the variation of mass and other asymptotic conserved quantities in the theory under consideration. Generalizing this kind of reasoning to the initial dota for the manifold with an interior boundary we got the generalized first law of black hole mechanics. We consider an asymptotically flat solution to the Einstein-Maxwell axion-dilaton gravity describing a black hole with a Killing vector field timelike at infinity, the horizon of which comprises a bifurcate Killing horizon with a bifurcate surface. Supposing that the Killing vector field is asymptotically orthogonal to the static hypersurface with boundary S and compact interior, we find that the solution is static in the exterior world, when the timelike vector field is normal to the horizon and has vanishing electric and axion- electric fields on static slices.
description: 17 pages, Revtex, a few comments (introduction) and references added
Tubophorella australis Imamura 1984
Creators: name: Smit, Harry
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Limnesiidae
Tubophorella
Tubophorella australis

description: Tubophorella australis Imamura, 1984
 New records — New South Wales. 0/1/0, School Creek, near Morton NP, 5 Nov. 2001 ; 0/1/0, Upper Kangaroo River, N of Kangaroo Valley, 7 Nov. 2001.
 Distribution — Previously, only known from the holotype female collected in New South Wales.
description: Published as part of Smit, Harry, 2022, New records of water mites of the family Limnesiidae Thor from Australia (Acari: Hydrachnidia), with the description of seven new species, pp. 193-222 in Acarologia 62 (1) on page 218, DOI: 10.24349/yu9v-w0lf, http://zenodo.org/record/7160186
Tessellation-based analysis of impurity clustering in the edge plasma of tokamaks
Creators: name: Lin, Zetao
name: Maurel--Oujia, Thibault
name: Kadoch, Benjamin
name: Benkadda, Saddrudin
name: Schneider, Kai
Publisher: name: arXiv
Year: 2024
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: 76Fxx

description: Confinement quality in fusion plasma is significantly influenced by the presence of heavy impurities, which can lead to radiative heat loss and reduced confinement. This study explores the clustering of heavy impurity, \textit{i.e.}, Tungsten in edge plasma, using high-resolution direct numerical simulations of the Hasegawa--Wakatani equations. We use Stokes number to quantify the inertia of impurity particles. It is found that particle inertia will cause spatial intermittency in particle distribution and the formation of large-scale structures, \textit{i.e.}, the clustering of particles. The degrees of clustering are influenced by Stokes number. To quantify these observations, we apply a modified Voronoi tessellation, which assigns specific volumes to impurity particles. By determining time changes of these volumes, we can calculate the impurity velocity divergence, which allows to assess the clustering dynamics. To quantify the clustering statistically, several approaches are applied, such as probability density function (PDF) of impurity velocity divergence and joint PDF of volume and divergence.
description: 19 pages, 16 figures, 4 tables
Cubic Defects: Comparing the Eight-State-System with its Two-Level-Approximation
Creators: name: Nalbach, P.
name: Terzidis, O.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Substitutional defects in a cubic symmetry (such as a lithium defect in a KCl host crystal) can be modeled appropriately by an eight-state-system. Usually this tunneling degree of freedom is approximated by a two-level-system. We investigate the observable differences between the two models in three contexts. First we show that the two models predict different relations between the temperature dependence of specific heat and static susceptibility. Second we demonstrate that in the presence of external forces (pressure and electric field) the eight-state-system shows features that cannot be understood within the framework of the two-level-approximation. In this context we propose an experiment for measuring the parameter for tunneling along the face diagonal. Finally we discuss the differences between the models appearing for strongly coupled pairs. Geometric selection rules and particular forms of asymmetry lead to clear differences between the two models.
description: 19 pages, Latex, submitted to J. of Phys., some small supplements
title: The Effects of the Diversion Program on Student Resilience
Creators: name: Merrill, Mandi L.
Publisher: name: University of Nevada, Las Vegas
publisherIdentifier: https://ror.org/0406gha72
publisherIdentifierScheme: ROR
Year: 2023

description: The current study examined whether The Diversion Program is associated with an increase in student resilience. Fifty-one students 10- 18 years old participated in this study. Participants completed a resilience measure reflecting the multiple pathways and processes embedded in different contexts. A pretest-posttest design was used to evaluate the effects of the Diversion Program on students' resilience. As predicted, students’ resilience increased significantly from the pretest to the posttest. Results demonstrated the promise that resilience depends more on what we receive than what we have. This study serves as a beginning point to guide future resilience research, practice, and implementation on a broader scale.
Fast algorithms for slow moving asteroids: constraints on the distribution of Kuiper Belt Objects
Creators: name: Whidden, Peter J.
name: Kalmbach, J. Bryce
name: Connolly, Andrew J.
name: Jones, R. Lynne
name: Smotherman, Hayden
name: Bektesevic, Dino
name: Slater, Colin
name: Becker, Andrew C.
name: Ivezić, Željko
name: Jurić, Mario
name: Bolin, Bryce
name: Moeyens, Joachim
name: Förster, Francisco
name: Golkhou, V. Zach
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We introduce a new computational technique for searching for faint moving sources in astronomical images. Starting from a maximum likelihood estimate for the probability of the detection of a source within a series of images, we develop a massively parallel algorithm for searching through candidate asteroid trajectories that utilizes Graphics Processing Units (GPU). This technique can search over 10^10 possible asteroid trajectories in stacks of the order 10-15 4K x 4K images in under a minute using a single consumer grade GPU. We apply this algorithm to data from the 2015 campaign of the High Cadence Transient Survey (HiTS) obtained with the Dark Energy Camera (DECam). We find 39 previously unknown Kuiper Belt Objects in the 150 square degrees of the survey. Comparing these asteroids to an existing model for the inclination distribution of the Kuiper Belt we demonstrate that we recover a KBO population above our detection limit consistent with previous studies. Software used in this analysis is made available as an open source package.
description: Accepted to AJ
Model misspecification when excluding instrumental variables from PS models in settings where instruments modify the effects of covariates on treatment
Creators: name: Brookhart, M.A.
name: Ellis, A.R.
name: Lunt, M.
name: Glynn, R.J.
name: Stürmer, T.
name: Wyss, R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Theory and simulations show that variables affecting the outcome only through exposure, known as instrumental variables (IVs), should be excluded from propensity score (PS) models. In pharmacoepidemiologic studies based on automated healthcare databases, researchers will sometimes use a single PS model to control for confounding when evaluating the effect of a treatment on multiple outcomes. Because these "full" models are not constructed with a specific outcome in mind, they will usually contain a large number of IVs for any individual study or outcome. If researchers subsequently decide to evaluate a subset of the outcomes in more detail, they can construct reduced "outcome-specific" models that exclude IVs for the particular study. Accurate estimates of PSs that do not condition on IVs, however, can be compromised when simply excluding instruments from the full PS model. This misspecification may have a negligible impact on effect estimates in many settings, but is likely to be more pronounced for situations where instruments modify the effects of covariates on treatment (instrument-confounder interactions). In studies evaluating drugs during early dissemination, the effects of covariates on treatment are likely modified over calendar time and IV-confounder interaction effects on treatment are likely to exist. In these settings, refitting more flexible PS models after excluding IVs and IV-confounder interactions can work well. The authors propose an alternative method based on the concept of marginalization that can be used to remove the negative effects of controlling for IVs and IV-confounder interactions without having to refit the full PS model. This method fits the full PS model, including IVs and IV-confounder interactions, but marginalizes over values of the instruments. Fitting more flexible PS models after excluding IVs or using the full model to marginalize over IVs can prevent model misspecification along with the negative effects of balancing instruments in certain settings.
Probabilistic Answer Set Programming with Discrete and Continuous Random Variables
Creators: name: Azzolini, Damiano
name: Riguzzi, Fabrizio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Probabilistic Answer Set Programming under the credal semantics (PASP) extends Answer Set Programming with probabilistic facts that represent uncertain information. The probabilistic facts are discrete with Bernoulli distributions. However, several real-world scenarios require a combination of both discrete and continuous random variables. In this paper, we extend the PASP framework to support continuous random variables and propose Hybrid Probabilistic Answer Set Programming (HPASP). Moreover, we discuss, implement, and assess the performance of two exact algorithms based on projected answer set enumeration and knowledge compilation and two approximate algorithms based on sampling. Empirical results, also in line with known theoretical results, show that exact inference is feasible only for small instances, but knowledge compilation has a huge positive impact on the performance. Sampling allows handling larger instances, but sometimes requires an increasing amount of memory. Under consideration in Theory and Practice of Logic Programming (TPLP).
description: Under consideration in Theory and Practice of Logic Programming (TPLP)
Narosa viridana Talbot 1927
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Limacodidae
Narosa
Narosa viridana

description: Narosa viridana Talbot, 1927
COMMON NAME(S): Slug-caterpillar moth or Cup-cocoon moth.
SYNONYM(S): None.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Cote d’Ivoire, Guinea, Uganda, Zambia.
LOCALITY IN ZAMBIA: ‘Lusaka’, in Lusaka Province.
LARVAL HOSTPLANT(S): Unknown.
SOURCES: De Prins & De Prins 2022; Nair 2007.
Genus Oidemaskelis Bethune-Baker, 1915
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 65, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
title: Beitragsordnung der Studentenschaft der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig, Studentenschaft
Year: 1982
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 2
Using claims data to predict dependency in activities of daily living as a proxy for frailty
Creators: name: Patrick, A.
name: Pate, V.
name: Faurot, K.R.
name: Hanson, L.C.
name: Stürmer, T.
name: Castillo, W.C.
name: Brookhart, M.A.
name: Jonsson Funk, M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Estimating drug effectiveness and safety among older adults in population-based studies using administrative health care claims can be hampered by unmeasured confounding as a result of frailty. A claims-based algorithm that identifies patients likely to be dependent, a proxy for frailty, may improve confounding control. Our objective was to develop an algorithm to predict dependency in activities of daily living (ADL) in a sample of Medicare beneficiaries. Methods: Community-dwelling respondents to the 2006 Medicare Current Beneficiary Survey, >65years old, with Medicare Part A, B, home health, and hospice claims were included. ADL dependency was defined as needing help with bathing, eating, walking, dressing, toileting, or transferring. Potential predictors were demographics, International Classification of Diseases, Ninth Revision Clinical Modification diagnosis/procedure and durable medical equipment codes for frailty-associated conditions. Multivariable logistic regression was used to predict ADL dependency. Cox models estimated hazard ratios for death as a function of observed and predicted ADL dependency. Results: Of 6391 respondents, 57% were female, 88% white, and 38% were ≥80. The prevalence of ADL dependency was 9.5%. Strong predictors of ADL dependency were charges for a home hospital bed (OR=5.44, 95%CI=3.28-9.03) and wheelchair (OR=3.91, 95%CI=2.78-5.51). The c-statistic of the final model was 0.845. Model-predicted ADL dependency of 20% or greater was associated with a hazard ratio for death of 3.19 (95%CI: 2.78, 3.68). Conclusions: An algorithm for predicting ADL dependency using health care claims was developed to measure some aspects of frailty. Accounting for variation in frailty among older adults could lead to more valid conclusions about treatment use, safety, and effectiveness.
Rate-induced biosphere collapse in the Daisyworld model
Creators: name: Arnscheidt, Constantin W.
name: Alkhayuon, Hassan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Dynamical Systems (math.DS)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: There is much interest in the phenomenon of rate-induced tipping, where a system changes abruptly when forcings change faster than some critical rate. Here, we demonstrate and analyse rate-induced tipping in the classic "Daisyworld" model. The Daisyworld model considers a hypothetical planet inhabited only by two species of daisies with different reflectivities, and is notable because the daisies lead to an emergent "regulation" of the planet's temperature. The model serves as a useful thought experiment regarding the co-evolution of life and the global environment, and has been widely used in the teaching of Earth system science.
 We show that sufficiently fast changes in insolation (i.e. incoming sunlight) can cause life on Daisyworld to go extinct, even if life could in principle survive at any fixed insolation value among those encountered. Mathematically, this occurs due to the fact that the solution of the forced (nonautonomous) system crosses the stable manifold of a saddle point for the frozen (autonomous) system. The new discovery of rate-induced tipping in such a classic, simple, and well-studied model provides further supporting evidence that rate-induced tipping -- and indeed, rate-induced collapse -- may be common in a wide range of systems.
description: Final accepted author manuscript
An Optical Study of Two VY Sculptoris-Type Cataclysmic Binary Stars: V704 And and RX J2338+431
Creators: name: Weil, Kathryn E.
name: Thorstensen, John R.
name: Haberl, Frank
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report observations of the known cataclysmic variable star (CV) V704 And, and also confirm that the optical counterpart of the ROSAT Galactic Plane Survey source RX J2338+431 is a heretofore-neglected CV. Photometric and spectroscopic observations from MDM Observatory show both systems to be novalike variables that exhibit dips of 4-5 magnitudes from their mean brightnesses, establishing them as members of the VY~Scl subclass. From high-state emission-line radial velocities, we determine orbital periods of 0.151424(3) d (3.63 hr) for V704 And and 0.130400(1) d (3.13 hr) for RX J2338+431. In V704 And, we find that the H-alpha emission-line measures cluster into distinct regions on a plot of equivalent width versus full width at half-maximum, which evidently correspond to high, intermediate, and low photometric states. This allows us to assign spectra to photometric states when contemporaneous photometry is not available, an apparently novel method that may be useful in studies of other novalikes. Our low-state spectra of RX J2338+431 show features of an M-type secondary star, from which we estimate a distance of 890 +- 200 pc, in good agreement with the Gaia DR2 parallax.
description: Accepted for Astronomical Journal
Calendar time-specific propensity scores and comparative effectiveness research for stage III colon cancer chemotherapy
Creators: name: Mack, C.D.
name: Meyer, A.M.
name: Stürmer, T.
name: Sandler, R.S.
name: Carpenter, W.R.
name: Brookhart, M.A.
name: Glynn, R.J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Purpose: Nonexperimental studies of treatment effectiveness provide an important complement to randomized trials by including heterogeneous populations. Propensity scores (PSs) are common in these studies but may not adequately capture changes in channeling experienced by innovative treatments. We use calendar time-specific (CTS) PSs to examine the effect of oxaliplatin during dissemination from off-label to widespread use. Methods: Stage III colon cancer patients aged 65+ years initiating chemotherapy between 2003 and 2006 were examined using cancer registry data linked with Medicare claims. Two PS approaches for receipt of oxaliplatin versus 5-flourouricil were constructed using logistic models with key components of age, sex, substage, grade, census-level income, and comorbidities: (i) a conventional, year-adjusted PS and (ii) a CTS PS constructed and matched separately within 1-year intervals, then combined. We compared PS-matched hazard ratios (HRs) for mortality using Cox models. Results: Oxaliplatin use increased significantly; 8% (n=86) of patients received it in the first time period versus 52% (n=386) in the last. Channeling by comorbidities, income, and age appeared to change over time. The CTS PS improved covariate balance within calendar time strata and yielded an attenuated estimated benefit of oxaliplatin (HR=0.75) compared with the conventional PS (HR=0.69). Conclusion: In settings where prescribing patterns have changed and calendar time acts as a confounder, a CTS PS can characterize changes in treatment choices and estimating separate PSs within specific calendar time periods may result in enhanced confounding control. To increase validity of comparative effectiveness research, researchers should carefully consider drug lifecycles and effects of innovative treatment dissemination over time.
Leptogamasus Juvara-Bals 1981
Creators: name: Witaliński, Wojciech
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Parasitidae
Leptogamasus

description: Genus Leptogamasus Trägårdh, 1936 sensu Juvara-Balş, 1981
 Type species Leptogamasus suecicus Trägårdh, 1936: 227.
Some taxonomic remarks on the genus and its subgenera were recently published (Witaliński, 2021a).
  Leptogamasus (Leptogamasus) Trägårdh, 1936
 Type species Leptogamasus suecicus Trägårdh, 1936: 227.
description: Published as part of Witaliński, Wojciech, 2022, New Leptogamasus mite species (Parasitiformes: Parasitidae) from Europe. IV. Austria, pp. 228-249 in Acarologia 62 (1) on page 228, DOI: 10.24349/o36f-nsyv, http://zenodo.org/record/7160210
Astraeus X: Indications of a top-heavy initial mass function in highly star-forming galaxies from JWST observations at z>10
Creators: name: Hutter, Anne
name: Cueto, Elie R
name: Dayal, Pratika
name: Gottlöber, Stefan
name: Trebitsch, Maxime
name: Yepes, Gustavo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The James Webb Space Telescope (JWST) has uncovered an abundance of $z>10$ galaxies bright in the ultraviolet (UV) that has challenged traditional theoretical models at high redshifts. Recently, various new models have emerged to address this discrepancy by refining their description of star formation. Here we investigate whether modifications to the stellar initial mass function (IMF) alone can reproduce the $z>10$ UV luminosity functions (UV LFs) when the star formation rate is used as a proxy for the fraction of massive stars. We incorporate an Evolving IMF into the {\sc astraeus} galaxy evolution and reionisation simulation framework, which becomes increasingly top-heavy as the gas density in a galaxy rises above a given threshold. Our implementation accounts for the IMF's effects on supernova (SN) feedback, metal enrichment, and the UV and ionising emissivities. For this Evolving IMF model, we find that (i) the maximum UV luminosity enhancement is twice as large in massive galaxies ($ΔM_\mathrm{UV}\simeq2.6$) than those where star formation is strongly limited by SN feedback ($ΔM_\mathrm{UV}\simeq1.3$); (ii) it successfully reproduces the observed UV LFs at $z=5-15$; (iii) galaxies with top-heavy IMFs exhibit the highest star formation rates, driven by their location in local density peaks, which facilitates higher gas accretion rates; (iv) the $1σ$ variances in the UV luminosity are only slightly higher compared to when assuming a Salpeter IMF, but the $2σ$ variances are significantly increased by a factor of $1.4-2$ boosting the abundance of UV-bright galaxies at $z>10$; (v) reionisation begins earlier with more extended large ionised regions and fewer smaller ones during its initial stages, though these differences diminish at lower redshifts, leading to a similar end of reionisation at $z\simeq5.6$.}
description: 13 pages, 8 figures. Accepted for publication in A&A
Disordered skyrmion phase stabilized by magnetic frustration in a chiral magnet
Creators: name: Karube, K.
name: White, J. S.
name: Morikawa, D.
name: Dewhurst, C. D.
name: Cubitt, R.
name: Kikkawa, A.
name: Yu, X. Z.
name: Tokunaga, Y.
name: Arima, T.
name: Rønnow, H. M.
name: Tokura, Y.
name: Taguchi, Y.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic skyrmions are vortex-like topological spin textures often observed to form a triangular-lattice skyrmion crystal in structurally chiral magnets with Dzyaloshinskii-Moriya interaction. Recently $β$-Mn structure-type Co-Zn-Mn alloys were identified as a new class of chiral magnet to host such skyrmion crystal phases, while $β$-Mn itself is known as hosting an elemental geometrically frustrated spin liquid. Here we report the intermediate composition system Co$_7$Zn$_7$Mn$_6$ to be a unique host of two disconnected, thermal-equilibrium topological skyrmion phases; one is a conventional skyrmion crystal phase stabilized by thermal fluctuations and restricted to exist just below the magnetic transition temperature $T_\mathrm{c}$, and the other is a novel three-dimensionally disordered skyrmion phase that is stable well below $T_\mathrm{c}$. The stability of this new disordered skyrmion phase is due to a cooperative interplay between the chiral magnetism with Dzyaloshinskii-Moriya interaction and the frustrated magnetism inherent to $β$-Mn.
description: 57 pages, 16 figures
Supplementary document for Ptychographic lensless coherent endomicroscopy through a flexible fiber bundle - 6973841.pdf
Creators: name: Weinberg, Gil
name: Kang, Munkyu
name: Choi, Wonjun
name: Choi, Wonshik
name: Katz, Ori
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Supplementary Document
A Note on Einstein Gravity on AdS$_3$ and Boundary Conformal Field Theory
Creators: name: Navarro-Salas, J.
name: Navarro, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We find a simple relation between the first subleading terms in the asymptotic expansion of the metric field in AdS$_3$, obeying the Brown-Henneaux boundary conditions, and the stress tensor of the underlying Liouville theory on the boundary. We can also provide an more explicit relation between the bulk metric and the boundary conformal field theory when it is described in terms of a free field with a background charge.
description: LateX file, 10 pages
title: Dienstvereinbarung über die Weiterbildung für Mitarbeiter der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig
Year: 1982
Subjects: subject: Dienstvereinbarung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 4
Thinning of young cork oak tree plantations: tree competition versus information on cork quality - Desbaste de plantações jovens de sobreiro: competição entre árvores versus informação sobre a qualidade da cortiça
Creators: name: Tomé, Margarida
Publisher: name: Zenodo
Year: 2019
Subjects: cork oak tree; sustainable management; cork harvesting; mortality; resilience; natural regeneration
quality indicators
quality assesment
sobreiro; Gestão sustentável; desbóia; descortiçamento mortalidade; resiliência; regeneração natural
indicadores de qualidade
avaliação da qualidade

description: Presentation on the 5th Portuguese RAIN meeting
title: Ordnung für die elektronische Datenverarbeitung und die Zentrale Einrichtung "Rechenzentrum"
Creators: name: :None
Publisher: name: Technische Universität Braunschweig
Year: 1982
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 5
ISPOR health policy council proposed good research practices for comparative effectiveness research: Benefit or harm?
Creators: name: Carey, T.
name: Stürmer, T.
name: Poole, C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: There are increasing calls for better understanding of “what works” in health care. One of the means for assessing what works is through “comparative effectiveness research” (CER). Ideally, the needed data would come from randomized controlled trials (RCTs) or from natural experiments. RCTs would need to be large, practical clinical trials that compare interventions head-to-head in real clinical settings, using novel approaches to assess clinically relevant outcomes.
The Kinematics of 30 Milky Way Globular Clusters and the Multiple Stellar Populations within
Creators: name: Leitinger, Ellen
name: Baumgardt, Holger
name: Cabrera-Ziri, Ivan
name: Hilker, Michael
name: Carbajo-Hijarrubia, Juan
name: Gieles, Mark
name: Husser, Tim-Oliver
name: Kamann, Sebastian
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The spectroscopic and photometric classification of multiple stellar populations (MPs) in Galactic globular clusters (GCs) has enabled comparisons between contemporary observations and formation theories regarding the initial spatial configurations of the MPs. However, the kinematics of these MPs is an aspect that requires more attention. We investigated the 3D kinematics of 30 Galactic GCs, extending to 3-5 half-light radii, as well as their MPs, in order to uncover clues of the initial conditions of GCs and the MPs within. We have combined Hubble Space Telescope and Gaia DR3 proper motions together with a comprehensive set of line-of-sight velocities to determine the 3D rotation amplitudes, rotation axes, and anisotropy profiles of the clusters. We include radial velocities from new IFU observations of NGC 5024 and an analysis of archival MUSE data of NGC 6101. We compare our kinematic results with structural and orbital parameters of each cluster, reporting the most significant correlations and common features. We find significant rotation in 21 GCs, with no significant differences between the total rotational amplitudes of the MPs, except for NGC 104. We find no significant differences in the position angles or inclination angles. We find that the 3D rotational amplitude is strongly correlated with mass, relaxation time, enriched star fraction and concentration. We determine the anisotropy profiles of each cluster and the MPs where possible. We investigate correlations with the structural parameters, orbital parameters and accretion history of the clusters, finding that the dynamically young clusters with the highest central concentrations of primordial stars show radial anisotropy in their outer regions ($>2$ half-light radii). The dynamically young clusters with a central concentration of enriched stars show significant tangential anisotropy or isotropy in their outer regions.
description: Accepted for publication 13/12/2024 in A&A 33 pages, 34 figures, 5 tables
An unidentified TeV source in the vicinity of Cygnus OB2
Creators: name: Aharonian, F. A.
name: Akhperjanian, A.
name: Beilicke, M.
name: Uchiyama, Y.
name: Takahashi, T.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Deep observation (~113 hrs) of the Cygnus region at TeV energies using the HEGRA stereoscopic system of air Cerenkov telescopes has serendipitously revealed a signal positionally inside the core of the OB association Cygnus OB2, at the edge of the 95% error circle of the EGRET source 3EG J2033+4118, and ~0.5deg north of Cyg X-3. The centre of gravity of the source is RA (J2000): 20hr 32m 07s +-9.2s (stat) +-2.2s (sys), Dec (J2000): +41deg 30' 30" +-2.0' (stat) +-0.4' (sys). The source is steady, has a post-trial significance of +4.6 sigma, indication for extension with radius 5.6' at the ~3sigma level, and has a differential power-law flux with hard photon index of -1.9 +-0.3 (stat) +-0.3 (sys). The integral flux above 1 TeV amounts ~3% that of the Crab. No counterpart for the TeV source at other wavelengths is presently identified, and its extension would disfavour an exclusive pulsar or AGN origin. If associated with Cygnus OB2, this dense concentration of young, massive stars provides an environment conducive to multi-TeV particle acceleration and likely subsequent interaction with a nearby gas cloud. Alternatively, one could envisage gamma-ray production via a jet-driven termination shock.
description: 4 pages, 3 figures, Now accepted in Astronomy & Astrophysics Letters. Minor changes made
The electronic structure of amorphous silica: A numerical study
Creators: name: Koslowski, Thorsten
name: Kob, Walter
name: Vollmayr, Katharina
Publisher: name: arXiv
Year: 1997
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present a computational study of the electronic properties of amorphous SiO2. The ionic configurations used are the ones generated by an earlier molecular dynamics simulations in which the system was cooled with different cooling rates from the liquid state to a glass, thus giving access to glass-like configurations with different degrees of disorder [Phys. Rev. B 54, 15808 (1996)]. The electronic structure is described by a tight-binding Hamiltonian. We study the influence of the degree of disorder on the density of states, the localization properties, the optical absorption, the nature of defects within the mobility gap, and on the fluctuations of the Madelung potential, where the disorder manifests itself most prominently. The experimentally observed mismatch between a photoconductivity threshold of 9 eV and the onset of the optical absorption around 7 eV is interpreted by the picture of eigenstates localized by potential energy fluctuations in a mobility gap of approximately 9 eV and a density of states that exhibits valence and conduction band tails which are, even in the absence of defects, deeply located within the former band gap.
description: 21 pages of Latex, 5 eps figures
Subgroup analyses to determine cardiovascular risk associated with nonsteroidal antiinflammatory drugs and coxibs in specific patient groups
Creators: name: Solomon, D.H.
name: Glynn, R.J.
name: Rothman, K.J.
name: Setoguchi, S.
name: Mogun, H.
name: Schneeweiss, S.
name: Stürmer, T.
name: Avorn, J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Objective. To explore the extent to which clinical characteristics influence the association between cyclooxygenase 2 inhibitors (coxibs) and/or nonselective nonsteroidal antiinflammatory drugs (NSAIDs) and increased cardiovascular disease (CVD) risk in specific patient subgroups. There is substantial concern regarding the potential cardiovascular adverse effects of selective coxibs and nonselective NSAIDs, but many patients with arthritis experience important clinical benefits from these agents. Methods. The study population consisted of Medicare beneficiaries also eligible for a drug benefits program for older adults during the years 1999-2004. We calculated the relative risk (RR) for CVD events (myocardial infarction [MI], stroke, congestive heart failure, and cardiovascular death) among users of coxibs or nonselective NSAIDs in the prior 6 months compared with nonusers. We assessed biologic interaction between these medication exposures and important patient characteristics. Results. In the primary cohort, we identified 76,082 new users of coxibs, 53,014 new users of nonselective NSAIDs, and 46,558 nonusers. Compared with nonusers, the adjusted RR of CVD events for new users of each agent increased for rofecoxib (RR 1.22, 95% confidence interval [95% CI] 1.14, 1.30) and decreased for naproxen (RR 0.79, 95% CI 0.67, 0.93). Several patient characteristics were found to increase the risk of CVD events among users of some agents in both the primary and secondary cohorts, including age ≥80 years, hypertension, prior MI, prior CVD, rheumatoid arthritis, chronic renal disease, and chronic obstructive pulmonary disease. Rofecoxib and ibuprofen appeared to confer an increased risk in multiple patient subgroups. Conclusion. Many nonselective NSAIDs and coxibs are not associated with an increased risk of CVD events. However, several patient characteristics identify important subgroups that may be at an increased risk when using specific agents.
title: Benutzungsordnung für die Zentrale Einrichtung Rechenzentrum der Technischen Universität Braunschweig
Creators: name: :None
Publisher: name: Technische Universität Braunschweig. Rechenzentrum
Year: 1982
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 7
Supplementary document for The importance of temporal variability in the relationship between line height absorption and chlorophyll concentration: a case study from the Northern Gulf of Alaska - 7001436.pdf
Creators: name: Lowin, Benjamin
name: Strom, suzanne
name: Burt, William
name: Kelly, Thomas
name: Rivero-Calle, Sara
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: supplement
Quantum Effects in Ion Transport: A Thermodynamic Resource Theory Approach
Creators: name: Mohammadi, Amin
name: Shafiee, Afshin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In recent years, understanding thermodynamics in the quantum regime has garnered significant attention, driven by advances in nanoscale physics and experimental techniques. In parallel, growing evidence supports the importance of quantum effects in various biological processes, making them increasingly relevant to quantum thermodynamics. In this study, we apply resource theory formulations of thermodynamics to investigate the role of quantum properties in ion transport across cell membranes. Within this framework, quantum properties are treated as resources under generalized thermodynamic constraints in the quantum regime. Specifically, our findings reveal that non-Markovianity, which reflects memory effects in ion transport dynamics, serves as a key quantum resource that enhances the yield and efficiency of the ion transport process. In contrast, quantum coherence, manifested as the superposition of energy states in ion-transport proteins, reduces these metrics but plays a crucial role in distinguishing between ion channels and ion pumps: two distinct types of ion-transport proteins in cell membranes. Finally, we demonstrate that introducing an additional coherent system allows coherence to facilitate the transformation of an ion pump into an ion channel.
description: 9 pages, 3 figures
Cosmic Holography
Creators: name: Bak, Dongsu
name: Rey, Soo-Jong
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A new version of holographic principle for cosmology is proposed, which dictates that particle entropy within `cosmological apparent horizon' should not exceed gravitational entropy associated with the apparent horizon. It is shown that, in the Friedman-Robertson-Walker (FRW) cosmology, the open Universe as well as a restricted class of flat cases are compatible with the principle, whereas closed Universe is not. It is also found that inflationary Universe after the big-bang is incompatible with the cosmic holography.
description: Latex, 8 pages, published version in Class. Quant. Grav
THE INFLUENCE OF THE INCREASED HEIGHT OF THE REINFORCED CONCRETE COLUMNS OF THE ROAD BRIDGE ACROSS THE SOUTH MORAVA IN PREDEJANE, ON THE LOSS OF THE LOCAL STABILITY
Creators: name: Savic, Adrijana
Publisher: name: figshare
Year: 2021
Subjects: subject: 90599 Civil Engineering not elsewhere classified
subject: FOS: Civil engineering

description: The reinforced concrete bridge, founded on the reinforced concrete columns in accordance with Karpoš system, has been damaged due to the river erosion. Probation (trial) bridge testing has been implemented on the load influence V300, due to longitudinal joints (fissure). In this work, there are the results of the testing of the columns in no. 5. series as well as the remedial measures and that's why the bearing capacity of the column is increased.
title: Ordnung für die Zentrale Einrichtung Allgemeiner Hochschulsport der Technischen Universität Braunschweig, der Hochschule für Bildende Künste Braunschweig und der Fachhochschule Braunschweig-Wolfenbüttel
Creators: name: :None
Publisher: name: Technische Universität Braunschweig
Year: 1983
Subjects: subject: Ordnung
subject: 379

description: Hochschulöffentliche Bekanntmachungen der Technischen Universität Braunschweig, vol. 8
Pharmacoepidemiology and "in silico" drug evaluation: is there common ground?
Creators: name: Rothman, K.J.
name: Stürmer, T.
name: Avorn, J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Shortcomings of randomized trials have long been recognized by medical researchers (1,2). These shortcomings include a reduced range of risk factors for the outcome among patients enrolled in pre-approval trials. The reduced range enhances the validity of the trials, but the patient populations are highly selected compared with the broad range of risk factors represented among patients who are eventually treated with the drug. This restriction may reduce the generalizability of the findings from those studied to those with different baseline risks.
Directional scintillation detector for the detection of the wind of WIMPs
Creators: name: Shimizu, Y.
name: Minowa, M.
name: Sekiya, H.
name: Inoue, Y.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The quenching factor of the proton recoil in the stilbene scintillator was measured with a 252Cf neutron source and was found to be 0.1 - 0.17 in the recoil energy range between 300 keV and 3 MeV. It was found to depend on the direction of the recoil proton. The directional anisotropy of the quenching factor could be used to detect the wind of the WIMPs caused by the motion of the earth around the galactic center.
description: 5 pages, 7 figures, LaTeX; Accepted for publication in NIM-A
Modified spin-orbit couplings in uniaxially strained graphene
Creators: name: Rezaei, H.
name: Phirouznia, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Intrinsic and Rashba spin-orbit interactions in strained graphene is studied within the tight-binding (TB) approach. Dependence of Slater-Koster (SK) parameters of graphene on strain are extracted by fitting the \emph{ab initio} band structure to the TB results. A generalized low-energy effective Hamiltonian in the presence of spin-orbit couplings is proposed for strained graphene subjected to an external perpendicular electric field. Dependence of the modified Rashba strength and other parameters of effective Hamiltonian on the strain and electric field are calculated. In order to analyze the influence of the applied strain on the electronic properties of the graphene, one must take into account the lattice deformation, modifications of the hopping amplitudes and shift of the Dirac points. We find that using the strain it is possible to control the strength of Rashba and intrinsic spin-orbit couplings as well as energy gap at the shifted Dirac points. Meanwhile, the strain slightly modifies the topology of low-energy dispersion around the Dirac points. We describe the SOCs induced energy splitting as a function of strain.
Factors that moderate global similarity in initial L3 transfer Intervocalic voiced stops in heritage Spanish/English bilinguals’ L3 Italian
Creators: name: Cabrelli, J
name: Pichan, Carrie
name: Ward, J
name: Rothman, J
name: Serratrice, L
Publisher: name: University of Illinois at Chicago
Year: 2024
Subjects: classificationCode: 5204
subject: Cognitive and computational psychology
classificationCode: 4704
subject: Linguistics
subject: FOS: Languages and literature

description: Much of the formal linguistic research on third language (L3) acquisition has focused on transfer source selection, with the overall finding that (global) structural similarity between the L1/ L2 and L3 is the strongest predictor of initial transfer patterns. Recently, Cabrelli and Pichan (2021) reported data from the production of underlyingly intervocalic voiced stops in L3 Brazilian Portuguese (BP) and L3 Italian that highlight the notion that global similarity is likely moderated by other factors. Specifically, data from heritage Spanish/English bilinguals learning L3 BP reflected reliance on (non-facilitative, but globally more similar) Spanish, while L3 Italian data reflected greater reliance on (facilitative, but globally less similar) English. The current study is a first step towards identifying the source(s) of the disparity, in which we examine the roles of degree of dominance and explicit knowledge in heritage Spanish/English bilinguals. Thirty-four L3 Italian learners completed a delayed repetition task in all three languages. We report English-like patterns that contradict the L3 BP data and cannot be accounted for by degree of dominance or explicit knowledge. We connect these results to existing L3 transfer accounts and the need for further consideration of linguistic and methodological variables, particularly acoustic salience in L3 input and task modality.
Describing Hadronization via Histories and Observables for Monte-Carlo Event Reweighting
Creators: name: Bierlich, Christian
name: Ilten, Phil
name: Menzo, Tony
name: Mrenna, Stephen
name: Szewc, Manuel
name: Wilkinson, Michael K.
name: Youssef, Ahmed
name: Zupan, Jure
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We introduce a novel method for extracting a fragmentation model directly from experimental data without requiring an explicit parametric form, called Histories and Observables for Monte-Carlo Event Reweighting (HOMER), consisting of three steps: the training of a classifier between simulation and data, the inference of single fragmentation weights, and the calculation of the weight for the full hadronization chain. We illustrate the use of HOMER on a simplified hadronization problem, a $q\bar{q}$ string fragmenting into pions, and extract a modified Lund string fragmentation function $f(z)$. We then demonstrate the use of HOMER on three types of experimental data: (i) binned distributions of high level observables, (ii) unbinned event-by-event distributions of these observables, and (iii) full particle cloud information. After demonstrating that $f(z)$ can be extracted from data (the inverse of hadronization), we also show that, at least in this limited setup, the fidelity of the extracted $f(z)$ suffers only limited loss when moving from (i) to (ii) to (iii). Public code is available at https://gitlab.com/uchep/mlhad.
description: 42 pages, 21 figures. Updated version with minor revision recommended by SciPost Physics. Public code available
Performance of propensity score calibration - A simulation study
Creators: name: Glynn, R.J.
name: Schneeweiss, S.
name: Stürmer, T.
name: Avorn, J.
name: Rothman, K.J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Confounding can be a major source of bias in nonexperimental research. The authors recently introduced propensity score calibration (PSC), which combines propensity scores and regression calibration to address confounding by variables unobserved in the main study by using variables observed in a validation study. Here, the authors assess the performance of PSC using simulations in settings with and without violation of the key assumption of PSC: that the error-prone propensity score estimated in the main study is a surrogate for the gold-standard propensity score (i.e., it contains no additional information on the outcome). The assumption can be assessed if data on the outcome are available in the validation study. If data are simulated allowing for surrogacy to be violated, results depend largely on the extent of violation. If surrogacy holds, PSC leads to bias reduction between 32% and 106% (>100% representing overcorrection). If surrogacy is violated, PSC can lead to an increase in bias. Surrogacy is violated when the direction of confounding of the exposure-disease association caused by the unobserved variable(s) differs from that of the confounding due to observed variables. When surrogacy holds, PSC is a useful approach to adjust for unmeasured confounding using validation data.