cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tuning degree distributions of scale-free networks
Creators: name: Leary, C. C.
name: Schwehm, M.
name: Eichner, M.
name: Duerr, H. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Scale-free networks are characterized by a degree distribution with power-law behavior and have been shown to arise in many areas, ranging from the World Wide Web to transportation or social networks. Degree distributions of observed networks, however, often differ from the power-law type and data based investigations require modifications of the typical scale-free network. We present an algorithm that generates networks in which the skewness of the degree distribution is tuneable by modifying the preferential attachment step of the Barabasi-Albert construction algorithm. Skewness is linearly correlated with the maximal degree of the network and, therefore, adequately represents the influence of superspreaders or hubs. By combining our algorithm with work of Holme and Kim, we show how to generate networks with skewness gamma and clustering coefficient kappa, over a wide range of values.
description: 13 pages, 5 figures. Submitted to Physical Review E; references added, intro rewritten
The Westerbork SINGS Survey: I. Overview and Image Atlas
Creators: name: Braun, Robert
name: Oosterloo, Tom
name: Morganti, Raffaella
name: Klein, Uli
name: Beck, Rainer
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have obtained moderately deep radio continuum imaging at 18 and 22cm with the Westerbork array of 34 nearby galaxies drawn from the Spitzer SINGS and Starburst samples to enable complimentary analysis. The sub-sample have an optical major axis diameter in excess of 5 arcmin and are North of Declination 12.5 deg. Sub-sample galaxies span a very wide range of morphological types and star formation rates. Resolved detection was possible for every galaxy. This constitutes a first time detection at GHz radio frequencies for about half of the sample. Analysis of both total intensity and polarization properties of the sample will be published in companion papers. Both the HI and OH main-lines of the target galaxies were within the observed band-pass, albeit with only coarse velocity resolution. Only two low mass elliptical galaxies were undetected in HI. Four of the sub-sample galaxies were detected in OH main-line absorption, including two new detections. The results are presented in the form of an image atlas for which a standard transfer function and image size are used throughout and whereby the radio continuum, DSS optical and integrated HI are displayed side-by-side. Continuum and HI line photometry are tabulated for all targets.
description: 18 pages, 10 figures, accepted for publication in A&A
Ten simple rules for starting FAIR discussions in your community
Creators: name: Plomp, Esther
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: Lecture at Jülich Open Science Speaker Series (Jülich, Germany),
description: This lecture is a summary of the 'Ten simple rules for starting FAIR discussions in your community' article that provides guidance on how to start up discussions around the implementation of the FAIR principles (Findable, Accessible, Interoperable, Reusable). This includes discussions on how to standardise research workflows to facilitate interoperability. This work will be particularly relevant if you are unsure where to start, who to involve, what the benefits and barriers of standardisation are, and little work has been done in your discipline to standardise research workflows. These ten rules aim to support you to more effectively engaging your community with discussions on standardisation and practical implementation of the FAIR principles.
The impact of limited time resolution on the forward-scattering polarization in the solar Sr I 4607 Å line
Creators: name: Alemán, T. del Pino
name: Bueno, J. Trujillo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Theoretical investigations predicted that high spatio-temporal resolution observations in the Sr I 4607 A line must show a conspicuous scattering polarization pattern at the solar disk-center, which encodes information on the unresolved magnetism of the inter-granular photospheric plasma. Here we present a study of the impact of limited time resolution on the observability of such forward scattering (disk-center) polarization signals. Our investigation is based on three-dimensional radiative transfer calculations in a time-dependent magneto-convection model of the quiet solar photosphere, taking into account anisotropic radiation pumping and the Hanle effect. This type of radiative transfer simulation is computationally costly, reason why the time variation had not been investigated before for this spectral line. We compare our theoretical results with recent disk-center filter polarimetric observations in the Sr I 4607 A line, showing that there is good agreement in the polarization patterns. We also show what we can expect to observe with the Visible Spectro-Polarimeter at the upcoming Daniel K. Inouye Solar Telescope.
description: 11 pages, 10 figures, accepted for publication in the Astrophysical Journal
A periodic microfluidic bubbling oscillator: insight into the stability of two-phase microflows
Creators: name: Raven, Jan-Paul
name: Marmottant, Philippe
Publisher: name: arXiv
Year: 2006
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This letter describes a periodically oscillating microfoam flow. For constant input parameters, both the produced bubble volume and the flow rate vary over a factor two. We explicit the link between foam topology alternance and flow rate changes, and construct a retroaction model where bubbles still present downstream determine the volume of new bubbles, in agreement with experiment. This gives insight into the various parameters important to maintain monodispersity and at the same time shows a method to achieve controlled polydispersity.
description: 4 pages
Anisotropic Responses of a Ti-6Al-4V alloy, and development of a strain rate and temperature dependent yield criterion and constitutive model for HCP alloys
Creators: name: Yu, Shaojuan
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: Anisotropy
Assymetry
FEA
Mechanical Response
Ti Alloy
Yield Criterion

description: The deformation induced anisotropic mechanical responses of an electron beam single melt Ti-6Al-4V alloy are characterized over wide ranges of strain rates, temperatures and hydrostatic pressures, along different directions. Based on the experimental observation, the KHL model is used to predict the observed mechanical behaviors. Close agreement is found between the predicted results and the experimental observations. Based on the experimental results, a yield criterion is proposed to describe the anisotropy and tension compression asymmetry characteristics of this alloy. In the proposed anisotropic yield criterion, a novel method is introduced to decouple the anisotropy and tension compression asymmetry characteristics; the anisotropic coefficients and tension compression asymmetry parameter can be determined independently. The KHL model is used as the hardening response, and subsequently used to determine the material constants in the proposed yield criterion. Moreover, the newly proposed yield criterion is used to correlate the yield loci of the Ti-6Al-4V alloy at different strain levels, strain rates and temperatures. Excellent agreement between predicted yield surfaces and corresponding experimental data is obtained  A generalized anisotropic associative constitutive model is established for anisotropic metals with tension-compression asymmetry. The stress strain hardening behavior of the Ti-6Al-4V alloy, based on KHL constitutive model, is adopted to include the influences of strain rate and temperature on the plastic deformation of the material. The newly proposed yield criterion is introduced to predict the initial yield and subsequent working-hardening surfaces of the Ti alloy under loading conditions. Based on the associative flow rule, the KHL hardening model and the newly proposed yield criterion are combined into the anisotropic, strain rate and temperature dependent associative constitutive model. A user defined material subroutine (UMAT) for ABAQUS, is programmed based on the backward Euler's stress integration and radial return mapping techniques. By establishing the finite element models and implementing the UMAT in ABAQUS, the mechanical responses of the Ti alloy under uniaxial loadings are simulated. Moreover, the validity of the proposed associative constitutive model and the UMAT is further verified by comparing the simulation and experimental results on the mechanical response of the alloy under multiaxial loading conditions.
Perturbation waves in proteins and protein networks: Applications of percolation and game theories in signaling and drug design
Creators: name: Antal, Miklos A.
name: Bode, Csaba
name: Csermely, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The network paradigm is increasingly used to describe the dynamics of complex systems. Here we review the current results and propose future development areas in the assessment of perturbation waves, i.e. propagating structural changes in amino acid networks building individual protein molecules and in protein-protein interaction networks (interactomes). We assess the possibilities and critically review the initial attempts for the application of game theory to the often rather complicated process, when two protein molecules approach each other, mutually adjust their conformations via multiple communication steps and finally, bind to each other. We also summarize available data on the application of percolation theory for the prediction of amino acid network- and interactome-dynamics. Furthermore, we give an overview of the dissection of signals and noise in the cellular context of various perturbations. Finally, we propose possible applications of the reviewed methodologies in drug design.
description: 14 pages, 3 figures, 1 table, 80 references
Jiamusi pulsar observations: III. Nulling of 20 pulsars
Creators: name: Wang, P. F.
name: Han, J. L.
name: Han, L.
name: Cai, B. Y.
name: Wang, C.
name: Wang, T.
name: Chen, X.
name: Zhou, D. J.
name: Yu, Y. Z.
name: Han, J.
name: Xu, J.
name: Gao, X. Y.
name: Hong, T.
name: Hou, L. G.
name: Dong, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Most of pulsar nulling observations were conducted at frequencies lower than 1400~MHz. We aim to understand the nulling behaviors of pulsars at relatively high frequency, and to check if nulling is caused by a global change of pulsar magnetosphere. 20 bright pulsars are observed at 2250~MHz with unprecedented lengths of time by using Jiamusi 66m telescope. Nulling fractions of these pulsars are estimated, and the null and emission states of pulses are identified. Nulling degrees and scales of the emission-null pairs are calculated to describe the distributions of emission and null lengths. Three pulsars, PSRs J0248+6021, J0543+2329 and J1844+00, are found to null for the first time. The details of null-to-emission and emission-to-null transitions within pulse window are first observed for PSR J1509+5531, which is a small probability event. A complete cycle of long nulls for hours is observed for PSR J1709-1640. For most of these pulsars, the K-S tests of nulling degrees and nulling scales reject the hypothesis that null and emission are of random processes at high significance levels. Emission-null sequences of some pulsars exhibit quasi-periodic, low-frequency or featureless modulations, which might be related to different origins. During transitions between emission and null states, pulse intensities have diverse tendencies for variations. Significant correlations are found for nulling fraction, nulling cadence and nulling scales with the energy loss rate of the pulsars. Combined with the nulling fractions reported in literatures for 146 nulling pulsars, we found that statistically large nulling fractions are more tightly related to pulsar period than to characteristic age or energy loss rate.
description: 30 pages, 13 figures, 3 appendices, accepted for publication in A&A
Pentacyclic triterpenes as bioactive compounds isolated from Mauritia flexuosa L. f. acting against the Alzheimer’s disease
Creators: name: Ticona, Luis Apaza
name: Sánchez-Corral, Javier Sánchez
name: Shi, Yamin Zou
name: Lozano, Natalia Montoto
name: Barillas, Karla Slowing
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biochemistry
Cell Biology
Neuroscience
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer
Science Policy

description: Alzheimer’s disease is a significant concern due to its high prevalence and the limitations of current treatments. In our research, we investigated Mauritia flexuosa, a medicinal plant traditionally used for headaches, to identify active compounds with potential anti-Alzheimer’s effects. Three pentacyclic triterpenes were isolated through column chromatography and characterised from the dichloromethane/methanol extract from Mauritia flexuosa (DCMEMf), with (3β)-3-hydroxy-11-oxours-12-en-28-oic acid (3) showing the highest in vitro activity in the HMC3 and SVG p12 cell lines. Compound 3 inhibited the pharmacological targets NF-κB, PGE2, IDO1, and EGFR with IC50 values of 9.83, 3.86, 1.63 μM, and 49.57 nM, respectively, attributed to a hydroxyl group at the C-3 position of its structure. These findings suggest the potential of these compounds in treating neurological diseases, including headaches, and offer promising prospects for the development of new therapies against Alzheimer’s.
Analytical and Numerical Investigation of Structural Damage Detection and High-Dimensional Dynamic Response of Nonlinear and Time-Varying Systems
Creators: name: Xu, Guangyao
Publisher: name: Maryland Shared Open Access Repository
Year: 2007
Subjects: Damage Detection
Distributed Structural System
Nonlinear and Time-Varying System
Incremental Harmonic Balance Method
Ill-conditioned System equations
Enrich Measurement Information by Modifying Tested Structure in a Controlled Manner
Engineering, Mechanical (0548)
Engineering, Civil (0543)
Engineering, Industrial (0546)

description: This dissertation is concerned with two challenging areas of vibrations research: 1) inverse modeling for vibration-based structural damage detection, and 2) high-dimensional dynamic response of nonlinear and time-varying distributed structures. In the first area, we address structural damage detection using changes of natural frequencies, treatment of non-uniqueness of solutions, and treatment of ill-conditioned systems. A robust iterative algorithm is developed and applied to identify the locations and extent of damage in slender structures using only the changes in their first several natural frequencies. The algorithm, which combines a first-order, multiple-parameter perturbation method and the generalized inverse method, is tested extensively through experimental and numerical means on cantilever beams with different damage scenarios. A new method is developed to enrich the measurement information by modifying the structure in a controlled manner. A new method using singular value decomposition is developed to handle the ill-conditioned system equations when they occur. In the second area, we consider the high-dimensional, nonlinear and time-varying dynamic response of distributed systems with small bending stiffness, such as elevator cables and memory tapes. The effects of bending stiffness, different trial functions, number of trial functions used, and boundary conditions on the dynamics characteristics of cables with small bending stiffness are investigated. Furthermore, a nonlinear model of a friction-guided translating beam with a stationary load system, a boundary excitation, and a periodically varying transport speed is developed. The Incremental Harmonic Balance (IHB) method is extended for the first time on high-dimensional models of a distributed structural system. It is demonstrated that this method can successfully handle a variety of problems, including linear and nonlinear frequency response analyses, system optimization, determination of parametric instability region boundaries, determination of periodic responses for parametrically-excited nonlinear systems, and determination of periodic responses of linear and nonlinear systems under combined parametric and forced excitations. For the distributed system considered here, results show that a large number of trial functions in the spatial discretization are often required to yield the converged solutions; in addition to quantitative inaccuracy, low-dimensional models of the distributed system can lead to qualitatively misleading predictions.
Vacuum Polarization Effects on Flat Branes due to a Global Monopole
Creators: name: de Mello, E. R. Bezerra
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we analyse the vacuum polarization effects associated with a massless scalar field in the higher-dimensional spacetime. Specifically we calculate the renormalized vacuum expectation value of the square of the field, $_{Ren}$, induced by a global monopole in the "braneworld" scenario. In this context the global monopole lives in a $n=3$ dimensional sub-manifold of the higher-dimensional (bulk) spacetime, and our Universe is represented by a transverse flat $(p-1)-$ dimensional brane. In order to develop this analysis we calculate the general Green function admitting that the scalar field propagates in the bulk. Also a general curvature coupling parameter between the field and the geometry is assumed. We explicitly show that the vacuum polarization effects depend crucially on the values attributed to $p$. We also investigate the general structure of the renormalized vacuum expectation value of the energy-momentum tensor, $_{Ren.}$, for $p=3$.
description: 21 pages, 1 figure. Accepted for publication in PRD
Spectral band selection for vegetation properties retrieval using Gaussian processes regression
Creators: name: Verrelst, Jochem
name: Rivera, Juan Pablo
name: Gitelson, Anatoly
name: Delegido, Jesus
name: Moreno, José
name: Camps-Valls, Gustau
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: With current and upcoming imaging spectrometers, automated band analysis techniques are needed to enable efficient identification of most informative bands to facilitate optimized processing of spectral data into estimates of biophysical variables. This paper introduces an automated spectral band analysis tool (BAT) based on Gaussian processes regression (GPR) for the spectral analysis of vegetation properties. The GPR-BAT procedure sequentially backwards removes the least contributing band in the regression model for a given variable until only one band is kept. GPR-BAT is implemented within the framework of the free ARTMO's MLRA (machine learning regression algorithms) toolbox, which is dedicated to the transforming of optical remote sensing images into biophysical products. GPR-BAT allows (1) to identify the most informative bands in relating spectral data to a biophysical variable, and (2) to find the least number of bands that preserve optimized accurate predictions. This study concludes that a wise band selection of hyperspectral data is strictly required for optimal vegetation properties mapping.
Fledgling on board: a review of over-water offspring ferrying behaviour in waterbirds and its potential ecological correlates
Creators: name: O’Leathlobhair, Juniper L.
name: Goldberg, Daniel L.
name: Jadin, Robert C.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Ferrying, the behaviour in which waterbirds transport their offspring on their backs while in the water, is a captivating behaviour that wildlife photographers and filmmakers frequently highlight in calendars, wildlife documentaries, magazines and nature photography books. In the avian research sphere, however, only a handful of studies have investigated this behaviour, leaving much remaining to be understood about its evolution. One pattern that appears to emerge at a cursory glance is that the species that ferry tend to also be diving species. We sought to build a dataset of species that ferry and compare its occurrence to five ecological factors: diving, coloniality, territoriality, parental care type, and clutch size. Finally, we found that ferrying has originated at least four times within Anseriformes and has also been lost in two separate lineages of waterfowl. We suggest that a variety of avian life history factors may have influenced the evolution of ferrying behaviour and should be the focus of future research on this topic.
Mobile learning as instruction prompt guidance to support the inquiry-based learning process: an experimental study on primary school students.
Creators: name: MARTIN, ELENA
name: CASTÉRA, JÉRÉMY
name: CHENEVAL-ARMAND, HÉLÈNE
name: MARCHI, SABRINA
name: BRANDT-POMARES (France), PASCALE
Publisher: name: Review of Science, Mathematics and ICT Education
Year: 2024
Subjects: Mobile learning, learning experience, learning outcomes, inquiry learning, Primary school students

description: The effect of guidance for supporting student inquiry-based learning in a computer learning environment has been investigated. However, the effect of mobile learning guidance tools during an inquiry-based learning session in a non-virtual learning environment has rarely been investigated. The aim of this study was to investigate the impact of mobile learning guidance tools specifically on the learning experience and learning outcomes of primary students involved in an inquiry physical (non-virtual learning) science training session. A control group was involved in a conventional learning inquiry-based learning and an experimental group used mobile learning guidance for studying astronomy during an inquiry-based learning session. The findings showed that the mobile learning approach improves the learning experience of primary students, regardless of their initial knowledge of the subject studied. The mobile learning and the conventional approaches significantly improved primary students’ learning outcomes with no clear benefit for either condition.
description: Review of Science, Mathematics and ICT Education, Forthcoming papers
Canonical Scalar Field Inflation with String and $R^2$-Corrections
Creators: name: Odintsov, S. D.
name: Oikonomou, V. K.
name: Fronimos, F. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Assuming that a scalar field controls the inflationary era, we examine the combined effects of string and $f(R)$ gravity corrections on the inflationary dynamics of canonical scalar field inflation, imposing the constraint that the speed of the primordial gravitational waves is equal to that of light's. Particularly, we study the inflationary dynamics of an Einstein-Gauss-Bonnet gravity in the presence of $αR^2$ corrections, where $α$ is a free coupling parameter. As it was the case in the pure Einstein-Gauss-Bonnet gravity, the realization that the gravitational waves propagate through spacetime with the velocity of light, imposes the constraint that the Gauss-Bonnet coupling function $ξ(ϕ)$ obeys the differential equation $\ddotξ=H\dotξ$, where $H$ is the Hubble rate. Subsequently, a relation for the time derivative of the scalar field is extracted which implies that the scalar functions of the model, which are the Gauss-Bonnet coupling and the scalar potential, are interconnected and simply designating one of them specifies the other immediately. In this framework, it is useful to freely designate $ξ(ϕ)$ and extract the corresponding scalar potential from the equations of motion but the opposite is still feasible. We demonstrate that the model can produce a viable inflationary phenomenology and for a wide range of the free parameters. Also, a mentionable issue is that when the coupling parameter $α$ of the $R^2$ correction term is $α<10^{-3}$ in Planck Units, the $R^2$ term is practically negligible and one obtains the same equations of motion as in the pure Einstein-Gauss-Bonnet theory, however the dynamics still change, since now the time derivative of $\frac{\partial f}{\partial R}$ is nonzero.
description: AoP Accepted-Abstract is reduced due to arXiv limitations
Observations of High-Redshift X-Ray Selected Clusters with the Sunyaev-Zel'dovich Array
Creators: name: Muchovej, Stephen
name: Carlstrom, John E.
name: Cartwright, John
name: Greer, Christopher
name: Hawkins, David
name: Hennessy, Ryan
name: Joy, Marshall
name: Lamb, James W.
name: Leitch, Erik M.
name: Loh, Michael
name: Miller, Amber D.
name: Mroczkowski, Tony
name: Pryke, Clem
name: Reddall, Ben
name: Runyan, Marcus
name: Sharp, Matthew
name: Wood, David
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report measurements of the Sunyaev-Zel'dovich (SZ) effect in three high-redshift (0.89 < z < 1.03), X-ray selected galaxy clusters. The observations were obtained at 30 GHz during the commissioning period of a new, eight-element interferometer -- the Sunyaev-Zel'dovich Array (SZA) -- built for dedicated SZ effect observations. The SZA observations are sensitive to angular scales larger than those subtended by the virial radii of the clusters. Assuming isothermality and hydrostatic equilibrium for the intracluster medium, and gas-mass fractions consistent with those for clusters at moderate redshift, we calculate electron temperatures, gas masses, and total cluster masses from the SZ data. The SZ-derived masses, integrated approximately to the virial radii, are 1.9 ^{+0.5}_{-0.4}x10^{14} solar masses for CLl1415.1+3612, 3.4^{+0.6}_{-0.5}x10^{14} solar masses for CL1429.0+4241, and 7.2^{+1.3}_{-0.9}x10^{14} solar masses for CL1226.9+3332. The SZ-derived quantities are in good agreement with the cluster properties derived from X-ray measurements.
description: 20 pages, 3 figures
DRL-FAS: A Novel Framework Based on Deep Reinforcement Learning for Face Anti-Spoofing
Creators: name: Cai, Rizhao
name: Li, Haoliang
name: Wang, Shiqi
name: Chen, Changsheng
name: Kot, Alex Chichung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Inspired by the philosophy employed by human beings to determine whether a presented face example is genuine or not, i.e., to glance at the example globally first and then carefully observe the local regions to gain more discriminative information, for the face anti-spoofing problem, we propose a novel framework based on the Convolutional Neural Network (CNN) and the Recurrent Neural Network (RNN). In particular, we model the behavior of exploring face-spoofing-related information from image sub-patches by leveraging deep reinforcement learning. We further introduce a recurrent mechanism to learn representations of local information sequentially from the explored sub-patches with an RNN. Finally, for the classification purpose, we fuse the local information with the global one, which can be learned from the original input image through a CNN. Moreover, we conduct extensive experiments, including ablation study and visualization analysis, to evaluate our proposed framework on various public databases. The experiment results show that our method can generally achieve state-of-the-art performance among all scenarios, demonstrating its effectiveness.
description: Accepted by IEEE Transactions on Information Forensics and Security. Code will be released soon
Arrhenophagus chionaspidis Aurivillius 1888
Creators: name: Suh, Soo-Jung
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Encyrtidae
Arrhenophagus
Arrhenophagus chionaspidis

description: 7. Arrhenophagus chionaspidis Aurivillius (Fig. 5)
 Diagnosis. Body dark brown; antennae, ocelli, tegula, and legs yellowish brown; forewing hyaline with marginal fringe short, marginal, postmarginal, and stigma veins absent; clypeal margin of mouth strongly emarginated at base of each mandible; antenna five-segmented, three funicle segments narrow and aneliform, clava large and unsegmented; mesonotum and axillae reticulate, scutellum protruding posteriorly with fine sculpture; gaster slightly shorter than thorax, ovipositor about two-thirds length of middle tibia; tarsi four-segmented.
 Material examined. Korea. GG: 476 Dongtanjiseong-ro, Yeongtong-gu, Suwon-si, 2 females, ex. P. cockerelli on T. cuspidata, 11-vii-2014 (S.J. Suh). CN: 260 Unkyo-ri, Dupo-myeon, Asan-si, 28 females, ex. P. cockerelli on T. cuspidata, 3-vii-2016 (S.J. Suh). GN: Dusan-ri, Munsan-eup, Jinju-si, 4 females, ex. P. cockerelli on D. kaki, 28-iv-2015 (B.G. Jeong).
description: Published as part of Suh, Soo-Jung, 2018, Parasitoids (Hymenoptera: Chalcidoidea) reared from Pseudaulacaspis cockerelli (Cooley) (Hemiptera: Coccoidea) in the Republic of Korea, pp. 1-6 in Insecta Mundi 612 on pages 3-4, DOI: 10.5281/zenodo.3697168
Just-in-Time Learning for Bottom-Up Enumerative Synthesis
Creators: name: Barke, Shraddha
name: Peleg, Hila
name: Polikarpova, Nadia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: A key challenge in program synthesis is the astronomical size of the search space the synthesizer has to explore. In response to this challenge, recent work proposed to guide synthesis using learned probabilistic models. Obtaining such a model, however, might be infeasible for a problem domain where no high-quality training data is available. In this work we introduce an alternative approach to guided program synthesis: instead of training a model ahead of time we show how to bootstrap one just in time, during synthesis, by learning from partial solutions encountered along the way. To make the best use of the model, we also propose a new program enumeration algorithm we dub guided bottom-up search, which extends the efficient bottom-up search with guidance from probabilistic models. We implement this approach in a tool called Probe, which targets problems in the popular syntax-guided synthesis (SyGuS) format. We evaluate Probe on benchmarks from the literature and show that it achieves significant performance gains both over unguided bottom-up search and over a state-of-the-art probability-guided synthesizer, which had been trained on a corpus of existing solutions. Moreover, we show that these performance gains do not come at the cost of solution quality: programs generated by Probe are only slightly more verbose than the shortest solutions and perform no unnecessary case-splitting.
description: Accepted at OOPSLA 2020
Fingerprints of the electron skew-scattering on paramagnetic impurities in semiconductor systems
Creators: name: Rakitskii, M. A.
name: Denisov, K. S.
name: Rozhansky, I. V.
name: Averkiev, N. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we argue that the electron skew-scattering on paramagnetic impurities in non-magnetic systems, such as bulk semiconductors, possesses a remarkable fingerprint allowing to differentiate it directly from other microscopic mechanisms of the emergent Hall response. We demonstrate theoretically that the exchange interaction between the impurity magnetic moment and mobile electrons leads to the emergence of an electric Hall current persisting even at zero electron spin polarization. We describe two microscopic mechanisms behind this effect, namely the exchange interaction assisted skew-scattering and the conversion of the SHE induced transverse spin current to the charge one owing to the difference between the spin-up and spin-down conductivities. We propose an essentially all-electric scheme based on a spin-injection ferromagnetic-semiconductor device which allows one to reveal the effect of paramagnetic impurities on the Hall phenomena via the detection of the spin polarization independent terms in the Hall voltage.
Chartocerus subaenus
Creators: name: Suh, Soo-Jung
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Signiphoridae
Chartocerus
Chartocerus subaenus

description: 8. * Chartocerus subaenus (Förster) (Fig. 6)
 Diagnosis. Body glossy black except all tarsi yellowish, fore tibiae pale; mandible bidentate; antenna seven-segmented (1,1,4,1), funicle four-segmented; pronotum half or less as long as mesoscutum; forewing with alternating broad hyaline and dark bands, hindwing hyaline; forewing with fringe shorter than 1/2 width of the wing; basitarsus of middle leg clearly shorter than tibia; metasoma subequal in length to the head and mesosoma combined; male genitalia about 1/2 length of middle tibia, ventral surface of phallobase with distinct longitudinal thickening at midline, running from between bases of digiti almost to apex, digitus with apical denticle about 1/3 its length; tarsi five-segmented.
 Material examined. Korea. GB: 80 Daehak-ro, Buk-gu, Daegu-si, 1 female and 1 male, ex. P. cockerelli on L. obtusifolium, 27-vii-2014 (S.J. Suh).
 Remarks. This species is recorded for the first time in Korea.
description: Published as part of Suh, Soo-Jung, 2018, Parasitoids (Hymenoptera: Chalcidoidea) reared from Pseudaulacaspis cockerelli (Cooley) (Hemiptera: Coccoidea) in the Republic of Korea, pp. 1-6 in Insecta Mundi 612 on page 4, DOI: 10.5281/zenodo.3697168
Ecology and distribution of the Mediterranean Dondice trainitoi Furfaro and Mariottini, 2020 (Mollusca: Nudibranchia)
Creators: name: Furfaro, Giulia
name: Solca, Michele
name: Vitale, Fabio
name: Piraino, Stefano
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: During scientific technical dives in a marine animal forest (MAF) environment, the nudibranch Dondice trainitoi Furfaro & Mariottini 2020 was recorded on a rocky bottom at 50 m depth in the Salento Peninsula, Southern Italy, Eastern Mediterranean Sea. Further in situ explorations and broad bibliographic research within both the scientific and grey literature revealed that D. trainitoi is widely distributed across the Mediterranean Sea, despite what was previously known. Herein are the first records for the Adriatic Sea and the Apulia region of Italy, together with the deepest record of this species. An analysis of collected samples and both in situ and laboratory photographs of the hydrozoan colonies associated with D. trainitoi revealed its ecology and trophic behaviour; we conclude that the hydrozoan Obelia bidentata Clark, 1875 is its preferred prey, but that it also feeds on the athecate hydroid Eudendrium glomeratum Picard, 1952. These findings shed some light on the little-known ecology and distribution, on both a geographical and a bathymetric scale, of this species, which are fundamental to increasing knowledge on Mediterranean biodiversity and its ecosystem functions.
The fate of the false vacuum: Finite temperature, entropy and topological phase in quantum simulations of the early universe
Creators: name: Ng, King Lun
name: Opanchuk, Bogdan
name: Thenabadu, Manushan
name: Reid, Margaret
name: Drummond, Peter D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Despite being at the heart of the theory of the "Big Bang" and cosmic inflation, the quantum field theory prediction of false vacuum tunneling has not been tested. To address the exponential complexity of the problem, a table-top quantum simulator in the form of an engineered Bose-Einstein condensate (BEC) has been proposed to give dynamical solutions of the quantum field equations. In this paper, we give a numerical feasibility study of the BEC quantum simulator under realistic conditions and temperatures, with an approximate truncated Wigner (tW) phase-space method. We report the observation of false vacuum tunneling in these simulations, and the formation of multiple bubble 'universes' with distinct topological properties. The tunneling gives a transition of the relative phase of coupled Bose fields from a metastable to a stable 'vacuum'. We include finite temperature effects that would be found in a laboratory experiment and also analyze the cut-off dependence of modulational instabilities in Floquet space. Our numerical phase-space model does not use thin-wall approximations, which are inapplicable to cosmologically interesting models. It is expected to give the correct quantum treatment including superpositions and entanglement during dynamics. By analyzing a nonlocal observable called the topological phase entropy (TPE), our simulations provide information about phase structure in the true vacuum. We observe a cooperative effect in which the true vacua bubbles representing distinct universes each have one or the other of two distinct topologies. The TPE initially increases with time, reaching a peak as the multiple universes are formed, and then decreases with time to the phase-ordered vacuum state. This gives a model for the formation of universes with one of two distinct phases, which is a possible solution to the problem of particle-antiparticle asymmetry.
Technology Acceptance and Information System Success Affecting Intentionto Use with User's Satisfaction as a Mediator: A Case Study of Krungthai NEXT application
Creators: name: Nipon Buaban
Publisher: name: Business Administration Kasetsart University
Year: 2023
Subjects: Information Quality, Intention to Use, Technology Acceptance, User Satisfaction

description: Kasetsart Applied Business Journal, 17, 27, 1_20
Deep Generative Modeling in Network Science with Applications to Public Policy Research
Creators: name: Hartnett, Gavin S.
name: Vardavas, Raffaele
name: Baker, Lawrence
name: Chaykowsky, Michael
name: Gibson, C. Ben
name: Girosi, Federico
name: Kennedy, David P.
name: Osoba, Osonde A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Network data is increasingly being used in quantitative, data-driven public policy research. These are typically very rich datasets that contain complex correlations and inter-dependencies. This richness both promises to be quite useful for policy research, while at the same time posing a challenge for the useful extraction of information from these datasets - a challenge which calls for new data analysis methods. In this report, we formulate a research agenda of key methodological problems whose solutions would enable new advances across many areas of policy research. We then review recent advances in applying deep learning to network data, and show how these methods may be used to address many of the methodological problems we identified. We particularly emphasize deep generative methods, which can be used to generate realistic synthetic networks useful for microsimulation and agent-based models capable of informing key public policy questions. We extend these recent advances by developing a new generative framework which applies to large social contact networks commonly used in epidemiological modeling. For context, we also compare and contrast these recent neural network-based approaches with the more traditional Exponential Random Graph Models. Lastly, we discuss some open problems where more progress is needed.
description: 77 pages, 38 figures. This article is a RAND Working Report. v2: corrected typo in metadata
Two new species of the genus Quindina Roewer, 1914 (Opiliones: Nomoclastidae) from Colombia: phylogenetic relationships and notes on their nest architecture
Creators: name: Betancourt-Caicedo, Alejandro
name: Vásquez-Ordóñez, Aymer Andrés
name: Pinto-da-Rocha, Ricardo
name: Cabra-García, Jimmy
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Quindina Roewer, 1914 is a nomoclastid genus with 11 described species behaviourally characterised by its remarkable nest-building behaviour. In this paper we describe two new Colombian species of the genus from the western range of the Northern Andes, based on genital morphology and external characters. In addition, we explore their phylogenetic relationships using a phenotypic matrix with 96 characters, three newly proposed, and 55 terminals including all described species of Quindina and a wide outgroup sample across the suborder Laniatores. Quindina sanantonio sp. n. (type locality: Valle del Cauca, Santiago de Cali, San Antonio Forest) can be diagnosed by having two olive-green patches behind the ocularium and on the lateral portion of areas II and III, connected on the posterior margin of area III. Quindina horologium sp. n. (type locality: Risaralda, Santuario, Planes de San Rafael) can be diagnosed by having an hourglass-shaped dorsal pattern, beginning as two emerald-green patches next to the ocularium and continuing to the posterior margin of area III. Both species build nests without walls on the underside of leaves (ie flattened nest type), a previously unknown nest architecture for the genus. The phylogenetic analysis confirmed the monophyly of Quindina. The two new species, herein described, were recovered as basally branching within the genus. The inferred ancestral state for the nest architecture was the flattened nest type. We provide an updated key for the Colombian species of the genus Quindina and an updated distribution map. http://www.zoobank.org/urn:lsid:zoobank.org:pub:4C811186-3FAC-4F65-81BD-A5720513551E.
Cartan calculi on the quantum superplane
Creators: name: Celik, Salih
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 20G42; 58B32

description: Cartan calculi on the extended quantum superplane are given. To this end, the noncommutative differential calculus on the extended quantum superplane is extended by introducing inner derivations and Lie derivatives.
Landscape dynamics of the boreal mixedwood forest
Creators: name: Cumming, Steven G.
Publisher: name: University of British Columbia
Year: 2009

description: The mixedwood forest is a broad transitional area of intermingled deciduous and ever-green coniferous forest found along the southern extent of the boreal forest in western Canada. Extensive timber harvesting is a recent development in the mixedwood region. This thesis contributes to the scientific foundation of sustainable forest management in the mixedwood by describing the natural dynamics of a 73,000 km2 study area in northeastern Alberta. Large scale patterns in species composition and in the age and size structures of forest stand populations show that the forest in not an equilibrial, or shifting mosaic steady state, landscape. The age structure of the forest and the relative abundances of aspen and white spruce are not constant over time. Trends in fire size distributions and in rates of fire extinguishment, and a re-gression of monthly area burned on monthly weather, imply that fire suppression has reduced the mean proportional area burned per annum (r) by a factor of three since the late 1970s, but had negligible effect before 1960. Statistical models of fire size and composition, developed from mapped fires, predict the total size and composition of all known fires from 1940-1993. Over this interval, and corrected for fire suppression, r — 0.004, or one fifth the previously accepted rate. I conclude that the forest is older than generally believed. Extreme fire years and "background" years are of approx-imately equal importance, in terms of total area burned, but fire years more strongly influence large scale landscape pattern. The rate r varies with forest cover type, from 0.0027 for aspen to 0.007 for some coniferous types. I conclude that fire hazard increases along some successional pathways, which may be the mechanism by which landscape disequilibrium is maintained. Accumulated adjacent stem mortality forms small canopy gaps in young aspen stands. The gaps exhibit elevated recruitment of aspen and other shade-intolerant hardwoods. The age and size structures of older aspen stands, and an analysis of extensive forest inventory data, show that uneven-aged aspen stands are abundant, a finding consistent with gap dynamics. Simulation studies, and the statistics of some age-verification data, show that unexpectedly old aspen stands probably exist, which is consistent with the analysis of fire history. In these stands, the mean or maximum age of canopy trees are negatively biased estimators of the time that has elapsed since a stand-initiating fire.