cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Field-Temperature Phase Diagram and Entropy Landscape of CeAuSb$_2$
Creators: name: Zhao, Lishan
name: Yelland, Edward A.
name: Bruin, Jan A. N.
name: Sheikin, Ilya
name: Canfield, Paul C.
name: Fritsch, Veronika
name: Sakai, Hideaki
name: Mackenzie, Andrew P.
name: Hicks, Clifford W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a field-temperature phase diagram and an entropy map for the heavy fermion compound CeAuSb$_2$. CeAuSb$_2$ orders antiferromagnetically below $T_N=6.6$~K, and has two metamagnetic transitions, at 2.8 and 5.6~T. The locations of the critical endpoints of the metamagnetic transitions, which may play a strong role in the putative quantum criticality of CeAuSb$_2$ and related compounds, are identified. The entropy map reveals an apparent entropy balance with Fermi liquid behavior, implying that above the Néel transition the Ce moments are incorporated into the Fermi liquid. High-field data showing that the magnetic behavior is remarkably anisotropic are also reported.
description: 7 pages, 9 figures
On Davenport Expansions, Popov's formula, and Fine's query
Creators: name: Patkowski, Alexander E
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We establish an explicit connection between a Davenport expansion and the Popov sum. Asymptotic analysis follows as a result of these formulas. New solutions to a query of N.J. Fine are offered, and a proof of Davenport expansions is detailed.
Measurement of the Charge-Averaged Elastic Lepton-Proton Scattering Cross Section by the OLYMPUS Experiment
Creators: name: Bernauer, J. C.
name: Schmidt, A.
name: Henderson, B. S.
name: Ice, L. D.
name: Khaneft, D.
name: O'Connor, C.
name: Russell, R.
name: Akopov, N.
name: Alarcon, R.
name: Ates, O.
name: Avetisyan, A.
name: Beck, R.
name: Belostotski, S.
name: Bessuille, J.
name: Brinker, F.
name: Calarco, J. R.
name: Carassiti, V.
name: Cisbani, E.
name: Ciullo, G.
name: Contalbrigo, M.
name: De Leo, R.
name: Diefenbach, J.
name: Donnelly, T. W.
name: Dow, K.
name: Elbakian, G.
name: Eversheim, P. D.
name: Frullani, S.
name: Funke, Ch.
name: Gavrilov, G.
name: Gläser, B.
name: Görrissen, N.
name: Hasell, D. K.
name: Hauschildt, J.
name: Hoffmeister, Ph.
name: Holler, Y.
name: Ihloff, E.
name: Izotov, A.
name: Kaiser, R.
name: Karyan, G.
name: Kelsey, J.
name: Kiselev, A.
name: Klassen, P.
name: Krivshich, A.
name: Kohl, M.
name: Lehmann, I.
name: Lenisa, P.
name: Lenz, D.
name: Lumsden, S.
name: Ma, Y.
name: Maas, F.
name: Marukyan, H.
name: Miklukho, O.
name: Milner, R. G.
name: Movsisyan, A.
name: Murray, M.
name: Naryshkin, Y.
name: Benito, R. Perez
name: Perrino, R.
name: Redwine, R. P.
name: Piñeiro, D. Rodríguez
name: Rosner, G.
name: Schneekloth, U.
name: Seitz, B.
name: Statera, M.
name: Thiel, A.
name: Vardanyan, H.
name: Veretennikov, D.
name: Vidal, C.
name: Winnebeck, A.
name: Yeganov, V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report the first measurement of the average of the electron-proton and positron-proton elastic scattering cross sections. This lepton charge-averaged cross section is insensitive to the leading effects of hard two-photon exchange, giving more robust access to the proton's electromagnetic form factors. The cross section was extracted from data taken by the OLYMPUS experiment at DESY, in which alternating stored electron and positron beams were scattered from a windowless gaseous hydrogen target. Elastic scattering events were identified from the coincident detection of the scattered lepton and recoil proton in a large-acceptance toroidal spectrometer. The luminosity was determined from the rates of Møller, Bhabha and elastic scattering in forward electromagnetic calorimeters. The data provide some selectivity between existing form factor global fits and will provide valuable constraints to future fits.
description: 6 pages, 3 figures, submitted to PRL
Spiranthes elata var. minutiflora Cogniaux 1893
Creators: name: Steudel, Bastian
name: Appelhans, Marc S.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Spiranthes
Spiranthes elata
Spiranthes elata var. minutiflora cogniaux (1893: 192)

description: Spiranthes elata var. minutiflora Cogniaux (1893: 192)
 Lectotype (designated here): TRINIDAD. S.d., Crueger 54 (GOET 013865!).
 No duplicate of Crueger 54 exists in BR, Cogniaux´s main herbarium (S. De Smedt, pers. comm.). We found a loan request from Cogniaux and a letter in the GOET archives that states that orchids were sent to him for the work on the Flora Brasiliensis. Hence, this specimen represents the only known type material available.
description: Published as part of Steudel, Bastian & Appelhans, Marc S., 2016, Newly discovered orchid types (Orchidaceae) in the Herbarium Gottingense with selected lectotypifications, pp. 235-246 in Phytotaxa 243 (3) on page 237, DOI: 10.11646/phytotaxa.243.3.2, http://zenodo.org/record/13679995
On the Mathematics of Coframe Formalism and Einstein-Cartan Theory -- A Brief Review
Creators: name: Tecchiolli, Manuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This article is a review of what could be considered the basic mathematics of Einstein-Cartan theory. We discuss the formalism of principal bundles, principal connections, curvature forms, gauge fields, torsion form, and Bianchi identities, and eventually, we will end up with Einstein-Cartan-Sciama-Kibble field equations and conservation laws in their implicit formulation.
Spatial+: a novel approach to spatial confounding
Creators: name: Dupont, Emiko
name: Wood, Simon N.
name: Augustin, Nicole
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In spatial regression models, collinearity between covariates and spatial effects can lead to significant bias in effect estimates. This problem, known as spatial confounding, is encountered modelling forestry data to assess the effect of temperature on tree health. Reliable inference is difficult as results depend on whether or not spatial effects are included in the model. The mechanism behind spatial confounding is poorly understood and methods for dealing with it are limited. We propose a novel approach, spatial+, in which collinearity is reduced by replacing the covariates in the spatial model by their residuals after spatial dependence has been regressed away. Using a thin plate spline model formulation, we recognise spatial confounding as a smoothing-induced bias identified by Rice (1986), and through asymptotic analysis of the effect estimates, we show that spatial+ avoids the bias problems of the spatial model. This is also demonstrated in a simulation study. Spatial+ is straight-forward to implement using existing software and, as the response variable is the same as that of the spatial model, standard model selection criteria can be used for comparisons. A major advantage of the method is also that it extends to models with non-Gaussian response distributions. Finally, while our results are derived in a thin plate spline setting, the spatial+ methodology transfers easily to other spatial model formulations.
Equilibrium sampling by re-weighting non-equilibrium simulation trajectories
Creators: name: Yang, Cheng
name: Wan, Biao
name: Xu, Shun
name: Wang, Yanting
name: Zhou, Xin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: With the traditional equilibrium molecular simulations, it is usually difficult to efficiently visit the whole conformational space in complex systems, which are separated into some metastable conformational regions by high free energy barriers. The applied non-equilibrium process in simulations could enhance the transitions among these conformational regions, and the associated non-equilibrium effects can be removed by employing the Jarzynski equality (JE), then the global equilibrium distribution can be reproduced. However, the original JE requires the initial distribution of the non-equilibrium process is equilibrium, which largely limits the application of the non-equilibrium method in equilibrium sampling. By extending the previous method, the reweighted ensemble dynamics (RED), which re-weights many equilibrium simulation trajectories from arbitrary initial distribution to reproduce the global equilibrium, to non-equilibrium simulations, we present a method, named as re-weighted non-equilibrium ensemble dynamics (RNED), to generalize the JE in the non-equilibrium trajectories started from an arbitrary initial distribution, thus provide an efficient method to reproduce the equilibrium distribution based on multiple independent (short) non-equilibrium trajectories. We have illustrated the validity of the RNED in a one-dimensional toy model and in a Lennard-Jones system to detect the liquid-solid phase coexistence.
Spiranthes elata var. ovata Cogniaux 1893
Creators: name: Steudel, Bastian
name: Appelhans, Marc S.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Spiranthes
Spiranthes elata
Spiranthes elata var. ovata cogniaux (1893: 192)

description: Spiranthes elata var. ovata Cogniaux (1893: 192)
 Lectotype (designated here): ARGENTINA. Tartagal: s.d., Lorentz & Hieronymus 959 (GOET 013935!).
 Syntype: ARGENTINA. S.d., Lorentz & Hieronymus 511 (GOET 013936!).
 No type material for this name is present at BR (S. De Smedt, pers. comm.). As mentioned above, Cogniaux received orchid material from GOET for his work on Flora Brasiliensis. We selected specimen GOET 013935 as lectotype because it comprises a whole plant, whereas GOET 013936 consists of only fragments. Bolivia is listed as country of origin for Lorentz & Hieronymus 959 in the protologue instead of Argentina, since the city/area of Tartagal was then part of Bolivia.
description: Published as part of Steudel, Bastian & Appelhans, Marc S., 2016, Newly discovered orchid types (Orchidaceae) in the Herbarium Gottingense with selected lectotypifications, pp. 235-246 in Phytotaxa 243 (3) on page 237, DOI: 10.11646/phytotaxa.243.3.2, http://zenodo.org/record/13679995
The Kostka semigroup and its Hilbert basis
Creators: name: Gao, Shiliang
name: Kiers, Joshua
name: Orelowitz, Gidon
name: Yong, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The Kostka semigroup consists of pairs of partitions with at most r parts that have positive Kostka coefficient. For this semigroup, Hilbert basis membership is an NP-complete problem. We introduce KGR graphs and conservative subtrees, through the Gale-Ryser theorem on contingency tables, as a criterion for membership. In our main application, we show that if a partition pair is in the Hilbert basis then the partitions are at most r wide. We also classify the extremal rays of the associated polyhedral cone; these rays correspond to a (strict) subset of the Hilbert basis. In an appendix, the second and third authors show that a natural extension of our main result on the Kostka semigroup cannot be extended to the Littlewood-Richardson semigroup. This furthermore gives a counterexample to a recent speculation of P. Belkale concerning the semigroup controlling nonvanishing conformal blocks.
description: 27 pages. Conjectures 5.3 and 5.5 have been recently resolved in the affirmative by J. Kim (arXiv:2105.07015). Conjecture 5.8 has been resolved in the negative by the second and third authors in a new Appendix B. This furthermore resolves in the negative a recent speculation of P. Belkale (arXiv:2005.12457v3)
Applications of the multi-sigmoidal deterministic and stochastic logistic models for plant dynamics
Creators: name: Di Crescenzo, Antonio
name: Paraggio, Paola
name: Román-Román, Patricia
name: Torres-Ruiz, Francisco
Publisher: name: arXiv
Year: 2024
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Probability (math.PR)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: 92D25, 60J85, 60J70

description: We consider a generalization of the classical logistic growth model introducing more than one inflection point. The growth, called multi-sigmoidal, is firstly analyzed from a deterministic point of view in order to obtain the main properties of the curve, such as the limit behavior, the inflection points and the threshold-crossing-time through a fixed boundary. We also present an application in population dynamics of plants based on real data. Then, we define two different birth-death processes, one with linear birth and death rates and the other with quadratic rates, and we analyze their main features. The conditions under which the processes have a mean of multi-sigmoidal logistic type and the first-passage-time problem are also discussed. Finally, with the aim of obtaining a more manageable stochastic description of the growth, we perform a scaling procedure leading to a lognormal diffusion process with mean of multi-sigmoidal logistic type. We finally conduct a detailed probabilistic analysis of this process
description: 28 pages, 30 figures
Combined Brillouin light scattering and microwave absorption study of magnon-photon coupling in a split-ring resonator/YIG film system
Creators: name: Klingler, Stefan
name: Maier-Flaig, Hannes
name: Gross, Rudolf
name: Hu, Can-Ming
name: Huebl, Hans
name: Goennenwein, Sebastian T. B.
name: Weiler, Mathias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Microfocused Brillouin light scattering (BLS) and microwave absorption (MA) are used to study magnon-photon coupling in a system consisting of a split-ring microwave resonator and a yttrium iron garnet (YIG) film. The split-ring resonantor is defined by optical lithography and loaded with a 1 $μ$m-thick YIG film grown by liquid phase epitaxy. BLS and MA spectra of the hybrid system are simultaneously recorded as a function of the applied magnetic field magnitude and microwave excitation frequency. Strong coupling of the magnon and photon modes is found with a coupling strength of $g_\text{eff}/2 π= 63$ MHz. The combined BLS and MA data allows to study the continuous transition of the hybridized modes from a purely magnonic to a purely photonic mode by varying the applied magnetic field and microwave frequency. Furthermore, the BLS data represent an up-conversion of the microwave frequency coupling to optical frequencies.
description: 5 pages, 3 figures
Spiranthes hostmannii Reichenbach
Creators: name: Steudel, Bastian
name: Appelhans, Marc S.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Spiranthes
Spiranthes hostmannii

description: Spiranthes hostmannii Reichenbach in Grisebach (1864: 640)
 Holotype: TRINIDAD. S.d., Crueger s.n. (GOET 013864).
 Material of interest: SURINAME. 1843, Hostmann 841 (G 00169118, GH 00104457, P 00340990, P 00340991). SURINAME. 1843, Hostmann 368 (P 00585474).
 The specimen GOET 013864 is the holotype of this species since Grisebach (1864) cited only material collected by Crueger in Trinidad in his protologue. However, it is not clear whether Grisebach saw other material. Hence, we treat this species here in more detail. In the diagnosis of the species Grisebach (1864: 640) does not provide leaf characteristics, indicating that his specimen might be lacking leaves as is the case in GOET 013864. The name Spiranthes hostmannii was obviously used by Reichenbach, but we were not able to find a valid species description. Since Grisebach (1864) used the same species name, one might guess that he had seen the material collected by Hostmann.
description: Published as part of Steudel, Bastian & Appelhans, Marc S., 2016, Newly discovered orchid types (Orchidaceae) in the Herbarium Gottingense with selected lectotypifications, pp. 235-246 in Phytotaxa 243 (3) on page 237, DOI: 10.11646/phytotaxa.243.3.2, http://zenodo.org/record/13679995
Statistical analysis and first-passage-time applications of a lognormal diffusion process withmulti-sigmoidal logistic mean
Creators: name: Di Crescenzo, Antonio
name: Paraggio, Paola
name: Román-Román, Patricia
name: Torres-Ruiz, Francisco
Publisher: name: arXiv
Year: 2024
Subjects: subject: Methodology (stat.ME)
subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 92D25, 60J85, 60J70

description: We consider a lognormal diffusion process having a multisigmoidal logistic mean, useful to model the evolution of a population which reaches the maximum level of the growth after many stages. Referring to the problem of statistical inference, two procedures to find the maximum likelihood estimates of the unknown parameters are described. One is based on the resolution of the system of the critical points of the likelihood function, and the other is on the maximization of the likelihood function with the simulated annealing algorithm. A simulation study to validate the described strategies for finding the estimates is also presented, with a real application to epidemiological data. Special attention is also devoted to the first-passage-time problem of the considered diffusion process through a fixed boundary.
description: 37 pages, 36 figures
Additional file 1 of Telemedicine in the primary care of older adults: a systematic mixed studies review
Creators: name: Ilali, Marwa
name: Le Berre, Mélanie
name: Vedel, Isabelle
name: Khanassov, Vladimir
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1.
A Framework for 3D Tracking of Frontal Dynamic Objects in Autonomous Cars
Creators: name: Lotfi, Faraz
name: Taghirad, Hamid D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Both recognition and 3D tracking of frontal dynamic objects are crucial problems in an autonomous vehicle, while depth estimation as an essential issue becomes a challenging problem using a monocular camera. Since both camera and objects are moving, the issue can be formed as a structure from motion (SFM) problem. In this paper, to elicit features from an image, the YOLOv3 approach is utilized beside an OpenCV tracker. Subsequently, to obtain the lateral and longitudinal distances, a nonlinear SFM model is considered alongside a state-dependent Riccati equation (SDRE) filter and a newly developed observation model. Additionally, a switching method in the form of switching estimation error covariance is proposed to enhance the robust performance of the SDRE filter. The stability analysis of the presented filter is conducted on a class of discrete nonlinear systems. Furthermore, the ultimate bound of estimation error caused by model uncertainties is analytically obtained to investigate the switching significance. Simulations are reported to validate the performance of the switched SDRE filter. Finally, real-time experiments are performed through a multi-thread framework implemented on a Jetson TX2 board, while radar data is used for the evaluation.
A Note on Estimation of Multi-Sigmoidal Gompertz Functions with Random Noise
Creators: name: Román-Román, Patricia
name: Serrano-Pérez, Juan José
name: Torres-Ruiz, Francisco
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60M20, 60J60, 60J70

description: The behaviour of many dynamic real phenomena shows different phases, with each one following a sigmoidal type pattern. This requires studying sigmoidal curves with more than one inflection point. In this work, a diffusion process is introduced whose mean function is a curve of this type, concretely a transformation of the well-known Gompertz model after introducing in its expression a polynomial term. The maximum likelihood estimation of the parameters of the model is studied, and various criteria are provided for the selection of the degree of the polynomial when real situations are addressed. Finally, some simulated examples are presented.
description: 17 pages, 28 figures
Kernel approximation on algebraic varieties
Creators: name: Altschuler, Jason M.
name: Parrilo, Pablo A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Data Structures and Algorithms (cs.DS)
subject: Algebraic Geometry (math.AG)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Low-rank approximation of kernels is a fundamental mathematical problem with widespread algorithmic applications. Often the kernel is restricted to an algebraic variety, e.g., in problems involving sparse or low-rank data. We show that significantly better approximations are obtainable in this setting: the rank required to achieve a given error depends on the variety's dimension rather than the ambient dimension, which is typically much larger. This is true in both high-precision and high-dimensional regimes. Our results are presented for smooth isotropic kernels, the predominant class of kernels used in applications. Our main technical insight is to approximate smooth kernels by polynomial kernels, and leverage two key properties of polynomial kernels that hold when they are restricted to a variety. First, their ranks decrease exponentially in the variety's co-dimension. Second, their maximum values are governed by their values over a small set of points. Together, our results provide a general approach for exploiting (approximate) "algebraic structure" in datasets in order to efficiently solve large-scale data science problems.
Clustering Using Shared Reference Points Algorithm Based On a Sound Data Model
Creators: name: Abbas, Mohamed
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 460308
subject: Pattern recognition

description: A novel clustering algorithm CSHARP is presented for the purpose of finding clusters of arbitrary shapes and arbitrary densities in high dimensional feature spaces. It can be considered as a variation of the Shared Nearest Neighbor algorithm (SNN), in which each sample data point votes for the points in its k-nearest neighborhood. Sets of points sharing a common mutual nearest neighbor are considered as dense regions/ blocks. These blocks are the seeds from which clusters may grow up. Therefore, CSHARP is not a point-to-point clustering algorithm. Rather, it is a block-to-block clustering technique. Much of its advantages come from these facts: Noise points and outliers correspond to blocks of small sizes, and homogeneous blocks highly overlap. The proposed technique is less likely to merge clusters of different densities or different homogeneity. The algorithm has been applied to a variety of low and high dimensional data sets with superior results over existing techniques such as DBScan, K-means, Chameleon, Mitosis and Spectral Clustering. The quality of its results as well as its time complexity, rank it at the front of these techniques.
Stratification in tensor triangular geometry with applications to spectral Mackey functors
Creators: name: Barthel, Tobias
name: Heard, Drew
name: Sanders, Beren
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 18F99

description: We systematically develop a theory of stratification in the context of tensor triangular geometry and apply it to classify the localizing tensor-ideals of certain categories of spectral $G$-Mackey functors for all finite groups $G$. Our theory of stratification is based on the approach of Stevenson which uses the Balmer-Favi notion of big support for tensor-triangulated categories whose Balmer spectrum is weakly noetherian. We clarify the role of the local-to-global principle and establish that the Balmer-Favi notion of support provides the universal approach to weakly noetherian stratification. This provides a uniform new perspective on existing classifications in the literature and clarifies the relation with the theory of Benson-Iyengar-Krause. Our systematic development of this approach to stratification, involving a reduction to local categories and the ability to pass through finite étale extensions, may be of independent interest. Moreover, we strengthen the relationship between stratification and the telescope conjecture. The starting point for our equivariant applications is the recent computation by Patchkoria-Sanders-Wimmer of the Balmer spectrum of the category of derived Mackey functors, which was found to capture precisely the height $0$ and height $\infty$ chromatic layers of the spectrum of the equivariant stable homotopy category. We similarly study the Balmer spectrum of the category of $E(n)$-local spectral Mackey functors noting that it bijects onto the height $\le n$ chromatic layers of the spectrum of the equivariant stable homotopy category; conjecturally the topologies coincide. Despite our incomplete knowledge of the topology of the Balmer spectrum, we are able to completely classify the localizing tensor-ideals of these categories of spectral Mackey functors.
description: 61 pages, minor expository changes
Branching processes in varying environment with generation-dependent immigration
Creators: name: González, Miguel
name: Kersting, Goetz
name: Minuesa, Carmen
name: del Puerto, Inés
Publisher: name: arXiv
Year: 2024
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: A branching process in varying environment with generation-dependent immigration is a modification of the standard branching process in which immigration is allowed and the reproduction and immigration laws may vary over the generations. This flexibility makes the process more appropriate to model real populations due to the fact that the stability in the reproductive capacity and in the immigration laws are not usually fulfilled. In this setting, we study the extinction problem, providing a necessary and sufficient condition for the certain extinction of the population. The asymptotic behaviour of the model is analysed for those processes with critical offspring distributions, according with the classification established in Kersting (2017), and when the immigration means stabilize to a positive value. More specifically, we establish that the asymptotic distribution of the process -- under a suitable normalization -- belongs to the gamma distribution family.
description: 18 pages, 2 figures. This is the preprint version of the paper published in the journal Stochastic Models (see the official journal website at https://doi.org/10.1080/15326349.2019.1575754)
Stelis bidentata Schlechter 1912
Creators: name: Steudel, Bastian
name: Appelhans, Marc S.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Stelis
Stelis bidentata

description: Stelis bidentata Schlechter (1912: 358)
 Lectotype (designated here): GUATEMALA. Alta Vera Paz: in sylvis pr. Tactie, 5000´, June 1880, Türckheim 511 (AMES 00271966).
 Isolectotypes: GUATEMALA. Alta Vera Paz: in sylvis pr. Tactie, 5000´, June 1880, Türckheim 511 (AMES 00104611, GOET 013947!, US 00093539).
 Syntype: GUATEMALA. Coban: 1350 m, December 1906, Türckheim 1842 (AMES 00104610).
The main herbarium of Schlechter was destroyed in World War II in Herbarium Berolinense. There is no material of this species available in Berlin (personal visit of BS). Hence, a lectotype needs to be selected. We selected the specimen AMES 00271966 as lectotype because it contains some flowers and is in better condition than GOET 013947 and US 00093539. The syntype AMES 00104610 consists of a plant fragment lacking flowers. However, on the same sheet there is a photo of the destroyed Berlin specimen and drawings made under the supervision of Schlechter.
description: Published as part of Steudel, Bastian & Appelhans, Marc S., 2016, Newly discovered orchid types (Orchidaceae) in the Herbarium Gottingense with selected lectotypifications, pp. 235-246 in Phytotaxa 243 (3) on page 237, DOI: 10.11646/phytotaxa.243.3.2, http://zenodo.org/record/13679995
Additional file 1 of Abnormal DNA methylation within genes of the steroidogenesis pathway two years after paediatric critical illness and association with stunted growth in height further in time
Creators: name: Vanhorebeek, Ilse
name: Coppens, Grégoire
name: Güiza, Fabian
name: Derese, Inge
name: Wouters, Pieter J.
name: Joosten, Koen F.
name: Verbruggen, Sascha C.
name: Van den Berghe, Greet
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Compiled file with all Additional information: Additional Methods describing the definition of “Syndrome” and a stepwise explanation of the DMRcate method for the identification of differentially methylated DNA regions; Additional Tables listing the genes and number of CpG sites investigated for differential methylation between former PICU patients and healthy children, the differentially methylated regions in former PICU patients versus healthy children, the interaction of differential methylation in former PICU patients versus healthy children with sex and age at exposure, and the analyses of differential methylation between former PICU patients who received glucocorticoids during their stay in the PICU versus those who did not; and Additional Figure summarising a speculative interpretation of potential impact of abnormal DNA methylation within steroidogenic genes on corresponding gene expression.
Metallic Indium Monolayers on Si(111)
Creators: name: Park, Jae Whan
name: Kang, Myung Ho
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Density-functional calculations are used to identify one-atom-thick metallic In overlayers on the Si(111) surface, which have long been sought in quest of the ultimate two-dimensional (2D) limit of free-electron-like metallic properties. We predict two metastable single-layer In phases, one $\sqrt{7}\times\sqrt{3}$ phase with a coverage of 1.4 monolayer (ML; here 1 ML refers to one In atom per top Si atom) and the other $\sqrt{7}\times\sqrt{7}$ phase with 1.43 ML, which indeed match well with experimental evidences. Both phases reveal quasi-1D arrangements of protruded In atoms, leading to 2D-metallic but anisotropic band structures and Fermi surfaces. This directional feature contrasts with the free-electron-like In-overlayer properties that are known to persist up to the double-layer thickness, implying that we may have achieved the 2D limit of free-electron-like In overlayers in previous studies of double-layer In phases.
description: 5 pages, 6 figures
Nonequilibrium thermodynamics of accreted neutron-star crust
Creators: name: Gusakov, Mikhail E.
name: Kantor, Elena M.
name: Chugunov, Andrey I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that, in order to determine the equation of state of the inner crust of an accreting neutron star, one should minimize not the Gibbs free energy, as it is generally assumed in the literature, but a different thermodynamic potential $Ψ$, which tends to the minimum at fixed pressure and neutron chemical potential. Once this potential is specified, one can calculate the heat-release distribution in the stellar crust due to nonequilibrium nuclear reactions induced by accretion of matter onto the neutron-star surface. The results are important for adequate modeling of the accreted crust and interpretation of the observations of accreting neutron stars in low-mass X-ray binaries.
description: 6 pages, accepted for publication in Phys. Rev. D (Letters)
Trichopria prema Nixon 1980
Creators: name: Notton, David G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mymaridae
Trichopria
Trichopria prema

description: Trichopria prema Nixon, 1980: 34.
Valid name
Trichopria prema Nixon, 1980.
Summary of types
Holotype ♀, BMNH number 9.827, by original designation.
Primary type data
Boston Manor/ Mx., ix.1938; Trichopria / prema/ Nixon/ type ♀, 197.
Type locality
England, Middlesex, Boston Manor.
Remarks
The holotype is mounted on a card point, and is entire.
description: Published as part of Notton, David G., 2014, A catalogue of the types of Diapriinae (Hymenoptera, Diapriidae) at the Natural History Museum, London, pp. 1-123 in European Journal of Taxonomy 75 on page 100, DOI: 10.5852/ejt.2014.75, http://zenodo.org/record/3862773
LEAF: Navigating Concept Drift in Cellular Networks
Creators: name: Liu, Shinan
name: Bronzino, Francesco
name: Schmitt, Paul
name: Bhagoji, Arjun Nitin
name: Feamster, Nick
name: Crespo, Hector Garcia
name: Coyle, Timothy
name: Ward, Brian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (cs.LG)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Operational networks commonly rely on machine learning models for many tasks, including detecting anomalies, inferring application performance, and forecasting demand. Yet, model accuracy can degrade due to concept drift, whereby the relationship between the features and the target to be predicted changes. Mitigating concept drift is an essential part of operationalizing machine learning models in general, but is of particular importance in networking's highly dynamic deployment environments. In this paper, we first characterize concept drift in a large cellular network for a major metropolitan area in the United States. We find that concept drift occurs across many important key performance indicators (KPIs), independently of the model, training set size, and time interval -- thus necessitating practical approaches to detect, explain, and mitigate it. We then show that frequent model retraining with newly available data is not sufficient to mitigate concept drift, and can even degrade model accuracy further. Finally, we develop a new methodology for concept drift mitigation, Local Error Approximation of Features (LEAF). LEAF works by detecting drift; explaining the features and time intervals that contribute the most to drift; and mitigates it using forgetting and over-sampling. We evaluate LEAF against industry-standard mitigation approaches (notably, periodic retraining) with more than four years of cellular KPI data. Our initial tests with a major cellular provider in the US show that LEAF consistently outperforms periodic and triggered retraining on complex, real-world data while reducing costly retraining operations.
Cosmological test with the QSO Hubble diagram
Creators: name: Lopez-Corredoira, M.
name: Melia, F.
name: Lusso, E.
name: Risaliti, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A Hubble diagram (HD) has recently been constructed in the redshift range 099% C.L. The Quasi-Steady State Model is excluded at >95% C.L. The remaining four models (Lambda-CDM/wCDM, the R_h=ct Universe, the Friedmann open universe and a Static universe with a linear Hubble law) all pass the test. However, only Lambda-CDM/wCDM and $R_{\rm h}=ct$ also pass the Alcock-Paczynski (AP) test. The optimized parameters in Lambda-CDM/wCDM are Omega_m=0.20^{+0.24}_{-0.20} and w_{de}=-1.2^{+1.6}_{-infinity} (the dark-energy equation-of-state). Combined with the AP test, these values become Omega_m=0.38^{+0.20}_{-0.19} and w_{de}=-0.28^{+0.52}_{-0.40}. But whereas this optimization of parameters in Lambda-CDM/wCDM creates some tension with their concordance values, the $R_{\rm h}=ct$ Universe has the advantage of fitting the QSO and AP data without any free parameters.
description: Accepted to be published in Int. J. Mod. Phys. D
Detecting the historical roots of tribology research: a bibliometric analysis
Creators: name: Elango, Bakthavachalam
name: Bornmann, Lutz
name: Kannan, Govindaraju
Publisher: name: arXiv
Year: 2016
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: In this study, the historical roots of tribology are investigated using a newly developed scientometric method called Referenced Publication Years Spectroscopy. The study is based on cited references in tribology research publications. The Science Citation Index Expanded is used as data source. The results show that RPYS has the potential to identify the important publications : Most of the publications which have been identified in this study as highly cited (referenced) publications are landmark publications in the field of tribology.
description: Accepted for publicaion in the Scientometrics
Violating the KCBS inequality with a toy mechanism
Creators: name: Tezzin, Alisson
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In recent years, much research has been devoted to exploring contextuality in systems that are not strictly quantum, like classical light, and many theory-independent frameworks for contextuality analysis have been developed. It has raised the debate on the meaning of contextuality outside the quantum realm, and also on whether -- and, if so, when -- it can be regarded as a signature of non-classicality. In this paper, we try to contribute to this debate by showing a very simple ``thought experiment'' or ``toy mechanism'' where a classical object (i.e., an object obeying the laws of classical physics) is used to generate experimental data violating the KCBS inequality. As with most thought experiments, the idea is to simplify the discussion and to shed light on issues that in real experiments, or from a purely theoretical perspective, may be cumbersome. We give special attention to the distinction between classical realism and classicality, and to the contrast between contextuality within and beyond quantum theory.
Episodic High Velocity Outflows from V899 Mon: A Constraint On The Outflow Mechanisms
Creators: name: Ninan, J. P.
name: Ojha, D. K.
name: Philip, N. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the detection of large variations in the outflow wind velocity from a young eruptive star, V899 Mon during its ongoing high accretion outburst phase. Such large variations in the outflow velocity (from -722 km s$^{-1}$ to -425 km s$^{-1}$) have never been reported previously in this family of objects. Our continuous monitoring of this source shows that the multi-component, clumpy, and episodic high velocity outflows are stable in the time scale of a few days, and vary over the time scale of a few weeks to months. We detect significant decoupling in the instantaneous outflow strength to accretion rate. From the comparison of various possible outflow mechanisms in magnetospheric accretion of young stellar objects, we conclude magnetically driven polar winds to be the most consistent mechanism for the outflows seen in V899 Mon. The large scale fluctuations in outflow over the short period makes V899 Mon the most ideal source to constrain various magnetohydrodynamics (MHD) simulations of magnetospheric accretion. *footnote: based on observations made with the Southern African Large Telescope (SALT)
description: 7 pages, 7 figures, Accepted for Publication in ApJ
Additional file 1 of Assessing the influencing factors of out-of-pocket costs on tuberculosis in Sichuan Province: a cross-sectional study
Creators: name: Xia, Lan
name: Gao, Lijie
name: Zhong, Yin
name: Wu, Ya
name: He, Jinge
name: Zou, Fengjuan
name: Jian, Ronghua
name: Xia, Sujian
name: Chen, Chuang
name: Zhu, Sui
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
classificationCode: 110309
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Shielding electrostatic fields in polar semiconductor nanostructures
Creators: name: Hönig, G. M. O.
name: Westerkamp, S.
name: Hoffmann, A.
name: Callsen, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Modern opto-electronic devices are based on semiconductor heterostructures employing the process of electron-hole pair annihilation. In particular polar materials enable a variety of classic and even quantum light sources, whose on-going optimisation endeavours challenge generations of researchers. However, the key challenge - the inherent electric crystal polarisation of such materials - remains unsolved and deteriorates the electron-hole pair annihilation rate. Here, our approach introduces a sequence of reverse interfaces to compensate these polarisation effects, while the polar, natural crystal growth direction is maintained provoking a boost in device performance. Former research approaches like growth on less-polar crystal planes or even the stabilization of unnatural phases never reached industrial maturity. In contrast, our solution allows the adaptation of all established industrial processes, while the polarisation becomes adjustable; even across zero. Hence, our approach marks the onset of an entire class of ultra-fast and efficient devices based on any polar material.
description: Institut f\"ur Festk\"orperphysik, Technische Universit\"at Berlin, Hardenbergstr. 36, 10623 Berlin
Measuring Constructive Journalism in Kompas.com’s Climate Change Articles
Creators: name: Prestianta, Albertus
Publisher: name: figshare
Year: 2023
Subjects: Communication studies
Environmental communication

description: Climate change poses a significant threat globally. Due to the heavy nature of the issue, climate change news tends to be very negative. Overly negative news can cause psychological disruption and make people avoid the news. The news media plays a huge role in climate mitigation, adaptation, and people’s perspectives on climate change, making it crucial for them to communicate climate change effectively. Constructive journalism may be the solution to this issue. With constructive journalism, journalists avoid negativity bias by focusing not only on the negatives but also on the solutions and positives when reporting a story. This study conducted a quantitative content analysis on 123 climate change articles reported by Kompas.com in 2020 using the six elements of constructive journalism. This research found that Kompas.com’s climate change articles in 2020 were not constructive. The articles emphasized the consequences of climate change with minimal constructive elements to balance the negativity.
Identity management standards: A literature review
Creators: name: ENTRUST Horizon Europe
Publisher: name: Zenodo
Year: 2023

description:  Year 2023, Volume: 3 Issue: 1, 35 - 46, 30.06.2023

2023 Published by peer-reviewed open access scientific journal, C&I at DergiPark (https://dergipark.org.tr/tr/pub/ci)

ABSTRACT

Electronic identification (eID) and Identity Management (IDM) in the context of information systems is considered of crucial importance for citizen data safety, since it can authorize the proper stakeholders to access sensitive data. The plethora of information systems’ users and devices, the need for increased data confidentiality and integrity, as well as the requirement for proper data exchange considering short-range and long-range distance data exchange protocols and networks, increases the overall necessity for proper IDM mechanisms and techniques. Nevertheless, it needs to be identified that IDM mechanisms are not only security tools that improve technical skill sets, but the leaders towards opportunities that emerge. This manuscript provides an overview of state-of-the-art IDM standards and regulations towards interoperable eID, namely SAML, WS-Federation, OAuth, OpenID, FIDO, and Mobile Connect, including their latest versions. It considers different architectural components and scenarios, covering aspects of multiple domains, with the ability to be exploited across several networking and communication systems.

AUTHORS

Athanasios Kiourtis  , Thanassis Giannetsos , Sofia-anna Menesidou , Argyro Mavrogiorgou , Chrysostomos Symvoulidis , Alessio Graziani , Spyridon Kleftakis , Konstantinos Mavrogiorgos , Nikolaos Zafeiropoulos , Christos-alexandros Gkolias , Dimosthenis Kyriazis
Monte Carlo model for electron degradation in xenon gas
Creators: name: Mukundan, Vrinda
name: Bhardwaj, Anil
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We have developed a Monte Carlo model for studying the local degradation of electrons in the energy range 9-10000 eV in xenon gas. Analytically fitted form of electron impact cross sections for elastic and various inelastic processes are fed as input data to the model. Two dimensional numerical yield spectrum, which gives information on the number of energy loss events occurring in a particular energy interval, is obtained as output of the model. Numerical yield spectrum is fitted analytically, thus obtaining analytical yield spectrum. The analytical yield spectrum can be used to calculate electron fluxes, which can be further employed for the calculation of volume production rates. Using yield spectrum, mean energy per ion pair and efficiencies of inelastic processes are calculated. The value for mean energy per ion pair for Xe is 22 eV at 10 keV. Ionization dominates for incident energies greater than 50 eV and is found to have an efficiency of 65% at 10 keV. The efficiency for the excitation process is 30% at 10 keV.
Additional file 1 of Homelessness in the district of Nipissing of Ontario, Canada before, at the onset and during the COVID-19 pandemic: a trend analysis (2018–2021)
Creators: name: Odd, Megan
name: Erfani, Amir
Publisher: name: figshare
Year: 2023
Subjects: subject: Sociology
subject: FOS: Sociology

description: Appendix A: 2021 Enumeration Survey Questionnaire, Nipissing District, Ontario, Canada.