cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On encounter rates in star clusters
Creators: name: Rawiraswattana, Krisada
name: Goodwin, Simon P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Close encounters between stars in star forming regions are important as they can perturb or destroy protoplanetary discs, young planetary systems, and stellar multiple systems. We simulate simple, viralised, equal-mass $N$-body star clusters and find that both the rate and total number of encounters between stars varies by factors of several in statistically identical clusters due to the stochastic/chaotic details of orbits and stellar dynamics. Encounters tend to rapidly `saturate' in the core of a cluster, with stars there each having many encounters, while more distant stars have none. However, we find that the fraction of stars that have had at least one encounter within a particular distance grows in the same way (scaling with crossing time and half-mass radius) in all clusters, and we present a new (empirical) way of estimating the fraction of stars that have had at least one encounter at a particular distance.
description: 12 pages, 5 figures, 4 tables
IMUPoser: Full-Body Pose Estimation using IMUs in Phones, Watches, and Earbuds
Creators: name: Mollyn, Vimal
name: Arakawa, Riku
name: Goel, Mayank
name: Harrison, Chris
name: Ahuja, Karan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Tracking body pose on-the-go could have powerful uses in fitness, mobile gaming, context-aware virtual assistants, and rehabilitation. However, users are unlikely to buy and wear special suits or sensor arrays to achieve this end. Instead, in this work, we explore the feasibility of estimating body pose using IMUs already in devices that many users own -- namely smartphones, smartwatches, and earbuds. This approach has several challenges, including noisy data from low-cost commodity IMUs, and the fact that the number of instrumentation points on a users body is both sparse and in flux. Our pipeline receives whatever subset of IMU data is available, potentially from just a single device, and produces a best-guess pose. To evaluate our model, we created the IMUPoser Dataset, collected from 10 participants wearing or holding off-the-shelf consumer devices and across a variety of activity contexts. We provide a comprehensive evaluation of our system, benchmarking it on both our own and existing IMU datasets.
Splitting the lentils: Clues to galaxy/black hole coevolution from the discovery of offset relations for non-dusty versus dusty (wet-merger-built) lenticular galaxies in the $M_{\rm bh}$-$M_{\rm *,spheroid}$ diagram
Creators: name: Graham, Alister W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This work advances the (galaxy morphology)-dependent (black hole mass, $M_{\rm bh}$)-(spheroid/galaxy stellar mass, $M_*$) scaling relations by introducing `dust bins' for lenticular (S0) galaxies. Doing so has led to the discovery of $M_{\rm bh}$-$M_{\rm *,sph}$ and $M_{\rm bh}$-$M_{\rm *,gal}$ relations for dusty S0 galaxies - built by major wet mergers and comprising half the S0 sample - offset from the distribution of dust-poor S0 galaxies. The situation is reminiscent of how major dry mergers of massive S0 galaxies have created an offset population of ellicular and elliptical galaxies. For a given $M_{\rm bh}$, the dust-rich S0 galaxies have 3 to 4 times higher $M_{\rm *,sph}$ than the dust-poor S0 galaxies, and the steep distributions of both populations in the $M_{\rm bh}$-$M_{\rm *,sph}$ diagram bracket the $M_{\rm bh} \propto M_{\rm *,sph}^{2.27+/-0.48}$ relation defined by the spiral galaxies, themselves renovated through minor mergers. The new relations offer refined means to estimate $M_{\rm bh}$ in other galaxies and should aid with: (i) constructing (galaxy morphology)-dependent black hole mass functions; (ii) estimating the masses of black holes associated with tidal disruption events; (iii) better quantifying evolution in the scaling relations via improved comparisons with high-$z$ data by alleviating the pickle of apples versus oranges; (iv) mergers and long-wavelength gravitational wave science; (v) simulations of galaxy/black hole coevolution and semi-analytic works involving galaxy speciation; plus (vi) facilitating improved extrapolations into the intermediate-mass black hole landscape. The role of the galaxy's environment is also discussed, and many potential projects that can further explore the morphological divisions are mentioned.
description: 18 pages plus references and Appendix
Profiling the epigenetic landscape of the airway epithelium in asthma
Creators: name: Stefanowicz, Dorota
Publisher: name: University of British Columbia
Year: 2014

description: The airway epithelium is the interface between the environment and the submucosa of the lung and thus is the first line of defense against inhaled exogenous agents. In addition to maintaining a structural barrier through homeostasis and repair, the airway epithelium is involved in co-ordination of the mucosal immune response to the inhaled environment. In asthma it is now understood that the airway epithelium is abnormal with dysregulation of genes integral to differentiation, proliferation, and inflammation. Alteration of the chromatin architecture through epigenetic modifications including DNA methylation and histone modifications is reactive to the environment and can establish chromatin states which are permissive or repressive to gene expression. Epigenetic regulation of gene expression is cell specific, as such, it is important to understand epigenetic regulation in cells that are thought to play a central role in asthma. As epigenetic processes are critical to cellular specificity and disease susceptibility the overarching hypothesis of this thesis is that alterations to the epigenome of asthmatic airway epithelial cells contribute to the dysregulation of genes involved in key epithelial functions. To investigate this hypothesis, we performed analysis of DNA methylation, expression of epigenetic modifying genes, and histone acetylation and methylation in airway epithelial cells, airway fibroblasts, and peripheral blood mononuclear cells from asthmatic and healthy subjects. We identified unique signatures of both DNA methylation and expression of epigenetic modifying enzymes in airway epithelial cells and showed that epithelial cells were epigenetically distinct from other cell types. Furthermore, we found that airway epithelial cells from asthmatic subjects displayed changes in DNA methylation, expression of histone kinases, acetylation of lysine 18 on histone 3, and occupancy of this histone modification at genes important to epithelial functions. Therefore, epigenetic differences between tissue types were more evident and plentiful than within cell types highlighting the importance of the epigenome to cell specificity, yet subtle differences within each tissue were determined and may play a role in disease pathogenesis. Thus, these findings enhance our understanding of the unique epigenetic landscape which may contribute to the airway epithelial phenotype in health and disease.
Speculative Capacitation: Remediation, Bioinformatics, and the Politics of Empathy Games
Creators: name: Lipson, Daniel
Publisher: name: University of Chicago
Year: 2018
Subjects: subject: Game Studies
subject: Disability Studies
subject: Remediation
subject: Biomediation
subject: Queer Game Studies
subject: Capacity
subject: Difficulty
subject: Speculation
subject: Empathy Games
subject: Difficulty Genre
subject: Digital Media Theory
subject: Affect Theory

description: Since 2010, there has been a rapid proliferation of political advocacy videogames tackling serious subject matter, particularly issues surrounding class, gender, and disability.  Some, eager to champion such games as signs of the medium’s maturation, have been quick to declare such “empathy games”  as exemplars of what they laud as one of gaming’s medium specific virtues: its supposed ability to “put players in another's shoes.”   Others, particularly critics within Queer Game Studies, have been quick to point out problems with forms of representation meant to evoke empathy.   Turning an eye towards both sets of critical responses, I argue that neither advocates for empathy games nor their queer critics sufficiently take into account the informatic context of empathy games. I assert that disability studies, with its analyses of  of the relationship of technology, body, and cure provides an ideal avenue to explore to critique remediatory fantasies of empathy games beyond the stakes of representational politics.  I describe empathy games as engaging in something I call “speculative capacitation,” a process that brings together speculation as a mode of imagining what it would be like to embodied otherwise and speculation as a means of wealth extraction. I find that linking both aspects of “speculative capacitation” opens a way for scholars to engage in informatic critique that connects forms of game difficulty to broader contexts, such as the biopolitics of machine interfaces and medical actuarial practice. I assert that such an understanding casts difficulty and its affordances in a new light that is necessary to begin disentangling a number of of embedded claims about the possibilities of representation, the value of simulation, the transparency of the body to bioinformatics, and the uses of empathy.
Peltoperlopsis malickyi Stark & Sivec 1999
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Peltoperlidae
Peltoperlopsis
Peltoperlopsis malickyi

description: Peltoperlopsis malickyi Stark & Sivec Peltoperlopsis malickyi Stark & Sivec, 1999. Holotype ♂, Tam Dao, Vietnam (PMSL) Material examined. Vietnam: Vinh Phu, Tam Dao, stream 5 km along forest trail at west end of town, UV light, 7 May 1996, B. Hubley, M. Hanson, ROM 961013, 1 ♀ (ROM). Remarks. This female represents the second collection of P. malickyi but all known specimens are from the Tam Dao area.
description: Published as part of Stark, Bill P. & Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), pp. 104-126 in Illiesia 3 (12) on page 121, DOI: 10.5281/zenodo.4754627
description: {"references": ["Stark, B. P. & I. Sivec. 1999. Peltoperlopsis malickyi, a new species of Oriental Peltoperlidae (Plecoptera). Aquatic Insects, 21: 235 - 240."]}
Analysis of Collectivism and Egoism Phenomena within the Context of Social Welfare
Creators: name: Chebotarev, P. Yu.
name: Loginov, A. K.
name: Tsodikova, Ya. Yu.
name: Lezina, Z. M.
name: Borzenko, V. I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Multiagent Systems (cs.MA)
subject: Social and Information Networks (cs.SI)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 91B12, 91B70

description: Comparative benefits provided by the basic social strategies including collectivism and egoism are investigated within the framework of democratic decision-making. In particular, we study the mechanism of growing "snowball" of cooperation.
description: 12 pages, 5 figures. Translated from Russian. Original Russian Text published in Problemy Upravleniya, 2008, No. 4, pp. 30-37
A class of solutions for Einstein field equations with spatially varying cosmological constant in spherically symmetric anisotropic source
Creators: name: Tiwari, R. N.
name: Ray, Saibal
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work a class of interior solution for Einstein field equations corresponding to a spherically symmetric anisotropic fluid sphere has been obtained under the assumption that the cosmological constant is spatially variable. The solution obtained has the characteristics that the pressure and the cosmological parameter vanish at the centre and at the boundary with a maximum value somewhere inside the body. It has been argued that a variable $ Λ$ is as much important physically in Astrophysics as in Cosmology.
description: 5 Latex pages
Double explosions and jet formation in GRB-supernova progenitors
Creators: name: Lyutikov, Maxim
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Progenitors of long GRBs, and core-collapse supernovae in general, may have two separate mechanisms driving the outflows: quasi-isotropic neutrino-driven supernova explosions followed by a highly collimated relativistic outflow driven by the GRB central engine, a black hole or a magnetar. We consider the dynamics of the second GRB-driven explosion propagating through expanding envelope generated by the passage of the primary supernova shock. Beyond the central core, in the region of steep density gradient created by the SN shock breakout, the accelerating secondary quasi-spherical GRB shock become unstable to corrugation and under certain conditions may form a highly collimated jet, a "chimney", when a flow expands almost exclusively along a nearly cylindrically collimated channel. Thus, weakly non-spherical driving and/or non-spherical initial conditions of the wind cavity may produce highly non-spherical, jetted outflows. For a constant luminosity GRB central engine, this occurs for density gradient in the envelope ρ~ r^{-ω} steeper than ω>4.
COUPA: An Industrial Recommender System for Online to Offline Service Platforms
Creators: name: Xie, Sicong
name: Hu, Binbin
name: Li, Fengze
name: Liu, Ziqi
name: Zhang, Zhiqiang
name: Zhong, Wenliang
name: Zhou, Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Aiming at helping users locally discovery retail services (e.g., entertainment and dinning), Online to Offline (O2O) service platforms have become popular in recent years, which greatly challenge current recommender systems. With the real data in Alipay, a feeds-like scenario for O2O services, we find that recurrence based temporal patterns and position biases commonly exist in our scenarios, which seriously threaten the recommendation effectiveness. To this end, we propose COUPA, an industrial system targeting for characterizing user preference with following two considerations: (1) Time aware preference: we employ the continuous time aware point process equipped with an attention mechanism to fully capture temporal patterns for recommendation. (2) Position aware preference: a position selector component equipped with a position personalization module is elaborately designed to mitigate position bias in a personalized manner. Finally, we carefully implement and deploy COUPA on Alipay with a cooperation of edge, streaming and batch computing, as well as a two-stage online serving mode, to support several popular recommendation scenarios. We conduct extensive experiments to demonstrate that COUPA consistently achieves superior performance and has potential to provide intuitive evidences for recommendation
description: The short version has been accepted by the SIGIR 2023 Industrial track
Participation in school food and nutrition programs and associations with dietary psychosocial and behavioural outcomes among Vancouver students in grades 6-8
Creators: name: Stephens, Teya Anne-Margaret
Publisher: name: University of British Columbia
Year: 2014

description: Background: Diet-related health conditions, including obesity and type 2 diabetes, are a growing concern among Canadian youth. In Canada, there is also a rising interest in the impact of dietary choices on environmental sustainability. Several school food and nutrition programs (SFNPs) have been implemented to improve dietary quality and environmental sustainability, including gardening and food preparation programs. However, limited research has examined the links between participation in SFNPs and dietary psychosocial and behavioural outcomes. Purpose: To examine healthy and environmentally sustainable dietary attitudes, expectations, choices, and practices, and current participation rates in SFNPs among Vancouver students in grades 6-8, and to evaluate whether participation in SFNPs is associated with these outcomes. Methods: A cross-sectional study was conducted in 26 schools in Vancouver from March-June, 2012 (n=937 students). Schools were selected using non-probability sampling. A web-based survey, including a food frequency questionnaire, measured student demographic characteristics, participation in SFNPs, and dietary psychosocial and behavioural outcomes. Rao-Scott corrected chi-square tests were applied to assess associations between SFNPs and outcomes (p<0.05). Results: Less than 50% of students reported participating in SFNP activities, with the exception of recycling (51.2%). Greater than 50% reported the importance of health and environmental sustainability when making food purchases, and agreement that food choices impact health or the environment. However, < 50% of students reported daily intake of most healthy and weekly intake of most environmentally sustainable dietary choices. Approximately 1/3 of students reported weekly purchasing from convenience food establishments. Participation in activities specific to learning about food or nutrition was greater among females, and secondary school students reported greater participation in food-specific activities. Activities specific to learning about food or nutrition demonstrated expected associations with outcomes. Most associations between hands-on food-related activities were in the unanticipated direction. Conclusions: Findings demonstrate marginal participation in SFNPs and intake of healthy and environmentally sustainable dietary choices among Vancouver students. Results also reveal the possible role of activities specific to learning about food or nutrition in promoting healthy and environmentally sustainable diet-related outcomes. Further research on SFNPs to inform curriculum changes could improve student dietary behavioural outcomes, student health, and environmental sustainability.
Spectroelectrochemical characterization of ultrathin organic films deposited on electrode surfaces
Creators: name: Casanova Moreno, Jannu Ricardo
Publisher: name: University of British Columbia
Year: 2014

description: Thin organic layers deposited on electrodes are ubiquitously proposed for a variety of surface-related applications. The quality of these layers is usually assessed by analytical methods that average the measured signal over a large area compared to the molecular scale. This work outlines the use of in-situ fluorescence microscopy as a characterization method by analyzing three examples of such layers. First, a heterogeneous Langmuir layer was physically adsorbed to a gold electrode via the Langmuir-Schaefer method and the effects of the substrate analyzed by comparing the adsorbed layer with the predecessor floating film. Through the use of a dimer-forming fluorophore, substrate mediated condensation was suggested. Second, the reductive desorption of self-assembled monolayers (SAMs) from microelectrodes was used to investigate the movement of the released thiolate molecules. Once in solution, these molecules were found to follow a buoyant movement, consequence of the high local concentration of H₂ resulting from the simultaneous reduction of water under the conditions employed. Finally, a DNA SAM system that has been previously suggested as a biosensing platform was investigated for heterogeneity. It was found that the substrate crystallography had a significant effect on the density and efficiency of potential driven change in conformation of the immobilized probes. Furthermore, a deconvolution method is proposed in order to correct for the effect of the electrode charging time constant on the measurements of the kinetics of the DNA conformation change. Overall, the performed experiments show that in-situ fluorescence microscopy is a useful technique to analyze distance dependent phenomena involving these deposited layers. Moreover, the coupling between electrochemistry and fluorescence allows not only to monitor but also to drive changes in the layers, creating systems capable of studying the dynamics of the deposited films. The inclusion of the proposed technique as a characterization tool during the development of systems based on ultrathin organic films could improve the understanding of the influence of the deposition conditions on the film quality, helping to attain the necessary robustness to make the proposed systems actually achieve their proposed applications.
Dipole blockade in a cold Rydberg atomic sample
Creators: name: Comparat, Daniel
name: Pillet, Pierre
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review here the studies performed about interactions in an assembly of cold Rydberg atoms. We focus more specially the review on the dipole-dipole interactions and on the effect of the dipole blockade in the laser Rydberg excitation, which offers attractive possibilities for quantum engineering. We present first the various interactions between Rydberg atoms. The laser Rydberg excitation of such an assembly is then described with the introduction of the dipole blockade phenomenon. We report recent experiments performed in this subject by starting with the case of a pair of atoms allowing the entanglement of the wave-functions of the atoms and opening a fascinating way for the realization of quantum bits and quantum gates. We consider then several works on the blockade effect in a large assembly of atoms for three different configurations: blockade through electric-field induced dipole, through Förster resonance and in van der Waals interaction. The properties of coherence and cooperativity are analyzed. Finally, we treat the role of dipole-dipole interactions between Rydberg atoms responsible for Penning ionization. The perturbation of the dipole blockade by ions and the evolution of the Rydberg towards an ultracold plasma are discussed.
description: Similar (without Appendix) article have been published in JOSA B, 27, A208 (2010)
Peltoperlopsis spinosa Stark & Sivec 2007, sp. nov.
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Peltoperlidae
Peltoperlopsis
Peltoperlopsis spinosa

description: Peltoperlopsis spinosa sp. nov. (Figs. 62-66) Material examined. Holotype ♂ from Vietnam, Thua Thien-Hue, Bach Ma National Park near jct. Rhodendron and Five Lakes trails, 1200 m, 16 ° 11’ 10” N, 107 ° 50’ 55” E, 16 June 2000, B. Hubley, D.C. Darling, ROM 2000531 (ROM). Adult habitus. Biocellate. Head yellow brown with darker spots anterolateral to ocelli and on central frons distal to M-line. Pronotum yellow brown with scattered pale rugosities (Fig. 62). Wings transparent, veins yellow brown. Legs pale yellow brown. 66 Male. Forewing length 10.5 mm. Tergum 10 bears a dark, posteromesal U-shaped mark (Fig. 63). Basal cercal segment ca. 1.4X long as basal width; segments 2-8 with inner marginal fringe of long thin setae; segments 9-13 bear 1-3 prominent, long, thick setae on dorsal and inner marginal surfaces (Fig. 66). Vesicle ca. 2X wide as long (Fig. 64). Aedeagus membranous, symmetrical and bearing sparse, thin setal like spines in scattered ventral patches (Fig. 65). Female. Unknown. Larva. Unknown. Etymology. The species name refers to the spiny appearance of the male cerci. Diagnosis. This species is generally similar to P. malickyi but is distinguished on the basis of the enlarged setae present on cercal segments 9-13.
description: Published as part of Stark, Bill P. & Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), pp. 104-126 in Illiesia 3 (12) on page 122, DOI: 10.5281/zenodo.4754627
Record statistics for biased random walks, with an application to financial data
Creators: name: Wergen, Gregor
name: Bogner, Miro
name: Krug, Joachim
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We consider the occurrence of record-breaking events in random walks with asymmetric jump distributions. The statistics of records in symmetric random walks was previously analyzed by Majumdar and Ziff and is well understood. Unlike the case of symmetric jump distributions, in the asymmetric case the statistics of records depends on the choice of the jump distribution. We compute the record rate $P_n(c)$, defined as the probability for the $n$th value to be larger than all previous values, for a Gaussian jump distribution with standard deviation $σ$ that is shifted by a constant drift $c$. For small drift, in the sense of $c/σ\ll n^{-1/2}$, the correction to $P_n(c)$ grows proportional to arctan$(\sqrt{n})$ and saturates at the value $\frac{c}{\sqrt{2} σ}$. For large $n$ the record rate approaches a constant, which is approximately given by $1-(σ/\sqrt{2π}c)\textrm{exp}(-c^2/2σ^2)$ for $c/σ\gg 1$. These asymptotic results carry over to other continuous jump distributions with finite variance. As an application, we compare our analytical results to the record statistics of 366 daily stock prices from the Standard & Poors 500 index. The biased random walk accounts quantitatively for the increase in the number of upper records due to the overall trend in the stock prices, and after detrending the number of upper records is in good agreement with the symmetric random walk. However the number of lower records in the detrended data is significantly reduced by a mechanism that remains to be identified.
description: 16 pages, 7 figures
Learnable Pillar-based Re-ranking for Image-Text Retrieval
Creators: name: Qu, Leigang
name: Liu, Meng
name: Wang, Wenjie
name: Zheng, Zhedong
name: Nie, Liqiang
name: Chua, Tat-Seng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Image-text retrieval aims to bridge the modality gap and retrieve cross-modal content based on semantic similarities. Prior work usually focuses on the pairwise relations (i.e., whether a data sample matches another) but ignores the higher-order neighbor relations (i.e., a matching structure among multiple data samples). Re-ranking, a popular post-processing practice, has revealed the superiority of capturing neighbor relations in single-modality retrieval tasks. However, it is ineffective to directly extend existing re-ranking algorithms to image-text retrieval. In this paper, we analyze the reason from four perspectives, i.e., generalization, flexibility, sparsity, and asymmetry, and propose a novel learnable pillar-based re-ranking paradigm. Concretely, we first select top-ranked intra- and inter-modal neighbors as pillars, and then reconstruct data samples with the neighbor relations between them and the pillars. In this way, each sample can be mapped into a multimodal pillar space only using similarities, ensuring generalization. After that, we design a neighbor-aware graph reasoning module to flexibly exploit the relations and excavate the sparse positive items within a neighborhood. We also present a structure alignment constraint to promote cross-modal collaboration and align the asymmetric modalities. On top of various base backbones, we carry out extensive experiments on two benchmark datasets, i.e., Flickr30K and MS-COCO, demonstrating the effectiveness, superiority, generalization, and transferability of our proposed re-ranking paradigm.
description: Accepted by SIGIR'2023
Short-lived Radio Bursts from the Crab Pulsar
Creators: name: Crossley, Jared H.
name: Eilek, Jean A.
name: Hankins, Timothy H.
name: Kern, Jeff S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Our high-time-resolution observations reveal that individual main pulses from the Crab pulsar contain one or more short-lived microbursts. Both the energy and duration of bursts measured above 1 GHz can vary dramatically in less than a millisecond. These fluctuations are too rapid to be caused by propagation through turbulence in the Crab Nebula or the interstellar medium; they must be intrinsic to the radio emission process in the pulsar. The mean duration of a burst varies with frequency as $ν^{-2}$, significantly different from the broadening caused by interstellar scattering. We compare the properties of the bursts to some simple models of microstructure in the radio emission region.
description: 34 pages, 10 figures; accepted for publication in ApJ
Peltoperlopsis swanni Stark & Sivec 2007, sp. nov.
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Peltoperlidae
Peltoperlopsis
Peltoperlopsis swanni

description: Peltoperlopsis swanni sp. nov. (Figs. 67-70) Material examined. Holotype ♂ from Vietnam, Lao Cai, Sapa, large waterfall on road from Sapa to Lai Chau, UV light, 8 May 1995, D. Currie, B. Hubley, J. Swann, ROM 956022 (ROM). Adult habitus. Biocellate. Head brown to yellow brown with pale M-line interrupted by narrow median brown band; area around ocelli pale brown (Fig. 67). Pronotum brown with scattered pale rugosities. Wing membrane pale brown, veins brown. Femora yellow brown, tibiae obscurely banded with broad pale mesal band between small, slightly darker apical bands. 69 Male. Forewing length 11 mm. Tergum 10 with Ushaped brown mark (Fig. 68). Basal cercal segment ca. 1.3X long as basal width; segments clothed laterally with short fringe setae. Vesicle about 2X wide as long (Fig. 69). Apical section of aedeagus deeply bilobed; lobes armed dorsally with tiny spike shaped microtrichia, a marginal patch of long thick setae, and an inner patch of fine brown hair-like spines (Fig. 70); the latter type of spines also occur ventrally in a large marginal patch. Ventral lobes with additional small lobe on each side armed with microtrichia and a patch of triangular spines. Female. Unknown. Larva. Unknown. 68 Etymology. The patronym honors J. Swann, one of the collectors of the holotype. Diagnosis. This species shares the U-shaped tergum 10 feature with P. malickyi but differs from that species in having a smaller and better defined vesicle, shorter cercal fringe setae, and in details of aedeagal armature. Conspicuous among the aedeagal features is the absence of a pair of thin dorsal sclerites as shown by Stark & Sivec (1999) for P. malickyi. The species is also generally similar to P. spinosa but that species has clusters of long bristles on several median cercal segments and long fringe setae on basal cercal segments.
description: Published as part of Stark, Bill P. & Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), pp. 104-126 in Illiesia 3 (12) on pages 123-124, DOI: 10.5281/zenodo.4754627
description: {"references": ["Stark, B. P. & I. Sivec. 1999. Peltoperlopsis malickyi, a new species of Oriental Peltoperlidae (Plecoptera). Aquatic Insects, 21: 235 - 240."]}
Bounds for solid angles of lattices of rank three
Creators: name: Fukshansky, Lenny
name: Robins, Sinai
Publisher: name: arXiv
Year: 2010
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary: 52C07, 05B30, Secondary: 11H06, 51M25

description: We find sharp absolute constants $C_1$ and $C_2$ with the following property: every well-rounded lattice of rank 3 in a Euclidean space has a minimal basis so that the solid angle spanned by these basis vectors lies in the interval $[C_1,C_2]$. In fact, we show that these absolute bounds hold for a larger class of lattices than just well-rounded, and the upper bound holds for all. We state a technical condition on the lattice that may prevent it from satisfying the absolute lower bound on the solid angle, in which case we derive a lower bound in terms of the ratios of successive minima of the lattice. We use this result to show that among all spherical triangles on the unit sphere in $\mathbb R^N$ with vertices on the minimal vectors of a lattice, the smallest possible area is achieved by a configuration of minimal vectors of the (normalized) face centered cubic lattice in $\mathbb R^3$. Such spherical configurations come up in connection with the kissing number problem.
description: 12 pages; to appear in the Journal of Combinatorial Theory A
Performance Evaluation of Regression Models in Predicting the Cost of Medical Insurance
Creators: name: Cenita, Jonelle Angelo S.
name: Asuncion, Paul Richie F.
name: Victoriano, Jayson M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The study aimed to evaluate the regression models' performance in predicting the cost of medical insurance. The Three (3) Regression Models in Machine Learning namely Linear Regression, Gradient Boosting, and Support Vector Machine were used. The performance will be evaluated using the metrics RMSE (Root Mean Square), r2 (R Square), and K-Fold Cross-validation. The study also sought to pinpoint the feature that would be most important in predicting the cost of medical insurance.The study is anchored on the knowledge discovery in databases (KDD) process. (KDD) process refers to the overall process of discovering useful knowledge from data. It show the performance evaluation results reveal that among the three (3) Regression models, Gradient boosting received the highest r2 (R Square) 0.892 and the lowest RMSE (Root Mean Square) 1336.594. Furthermore, the 10-Fold Cross-validation weighted mean findings are not significantly different from the r2 (R Square) results of the three (3) regression models. In addition, Exploratory Data Analysis (EDA) using a box plot of descriptive statistics observed that in the charges and smoker features the median of one group lies outside of the box of the other group, so there is a difference between the two groups. It concludes that Gradient boosting appears to perform better among the three (3) regression models. K-Fold Cross-Validation concluded that the three (3) regression models are good. Moreover, Exploratory Data Analysis (EDA) using a box plot of descriptive statistics ceases that the highest charges are due to the smoker feature.
description: 14 pages, IRCCETE 2023, Ilocos Norte Philippines
Disordered Ground State and Magnetic Field-Induced Long-Range Order in an S=3/2 Antiferromagnetic Honeycomb Lattice Compound Bi3Mn4O12(NO3)
Creators: name: Matsuda, M.
name: Azuma, M.
name: Tokunaga, M.
name: Shimakawa, Y.
name: Kumada, N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Bi3Mn4O12(NO3), in which the Mn4+ ions carry S=3/2, is the first honeycomb lattice system that shows no long-range magnetic order. Using neutron scattering, we have determined that short-range antiferromagnetic correlations develop at low temperatures. Applied magnetic fields induce a magnetic transition, in which the short-range order abruptly expands into a long-range order.
description: 4 pages
Additional file 2 of Tubular epithelial cell-derived extracellular vesicles induce macrophage glycolysis by stabilizing HIF-1α in diabetic kidney disease
Creators: name: Jia, Yijie
name: Chen, Jiaqi
name: Zheng, Zhikang
name: Tao, Yuan
name: Zhang, Shuting
name: Zou, Meina
name: Yang, Yanlin
name: Xue, Meng
name: Hu, Fang
name: Li, Yang
name: Zhang, Qian
name: Xue, Yaoming
name: Zheng, Zongji
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer
subject: Hematology

description: Additional file 2: Figure S1. Wide-field image of EV morphology.
Optically faint X-ray sources in the CDFN: Spitzer constraints
Creators: name: Rovilos, E.
name: Georgantopoulos, I.
name: Akylas, A.
name: Fotopoulou, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the properties of the most optically faint sources in the GOODS-N area (R > 26.5 AB). Such extremely optically faint populations present an uncharted territory despite the fact that they represent an appreciable fraction of the X-ray sources in the GOODS-N field. They are believed to contain either red AGN at moderate redshifts or possibly QSO at very high redshift. We compile our sample by first finding the 3.6um IRAC counterparts of the X-ray sources and searching for the optical counterparts of the IRAC sources. 35 sources do not have counterparts in the R-band Subaru optical images. Of these, 18 have HST-ACS counterparts while the remaining have no optical counterparts. The vast majority of our 35 sources are classified as Extremely Red Objects (EROs) on the basis of their V-K lower limits. Their photometric redshifts show that these populate moderate redshifts (median z~2.8), being markedly different from the already spectroscopically identified population which peaks at z~0.7. The Spitzer-IRAC mid-IR colours of the sources which have no HST counterparts tend to lie within the mid-IR colour diagram AGN "wedge", suggesting either QSO, ULIRG (Mrk231), or early-type galaxy templates at z>3. A large fraction of our sources (17/35), regardless of whether they have HST counterparts, can be classified as mid-IR bright/optically faint sources (Dust Obscured Galaxies) a class which is believed to include many heavily absorbed AGN. The co-added X-ray spectrum of the optically faint sources is very flat having a spectral index of Gamma~0.87, significantly flatter than the spectrum of the X-ray background. The optically faint R>26.5 X-ray sources constitute more than 50% of the total X-ray population at redshifts z>2 bearing important implications for the luminosity function and its evolution; considering X-ray sources with 2
description: Accepted for publication in A&A
Nominalization in the translation of literary prose from Chinese into English: based on the three English versions of Hong lou meng
Creators: name: Hou, Yu
Publisher: name: Macquarie University
Year: 2022
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: This study aims to investigate the use of nominalization in the translation of literary prose works from Chinese into English. Following the definition of English nominalization as a nominalized transform of a finite verbal form and based on complex condensation, this study describes English nominalization as adverbial and in the position of subject and object, condensing finite clausal structures. -- Explicitation in translation, as a potential candidate for the status of translation universal, is currently claimed as one of the most thoroughly studied phenomena in translation studies. However, there is less research on implicitation in translation as a main objective of study. Therefore, this research project decides on implicitation in translation as a direct point of departure. Since English nominalization condenses finite clausal structures, this justifies its analysis in translation as a manifestation of implicitation. -- Based on the use of nominalization mainly in the three English versions of the eighteenth century Chinese classical novel Hong Lou Meng (or Dream of the Red Chamber), and in the English versions of some other Chinese (classical and modern) novels, this study concludes that nominalization in the translation of literary prose from Chinese into English is predominantly used as adverbial, in the form of gerundive nominal, and in narrative. This study also concludes that the use of nominalization in literary prose translation from Chinese into English is potentially triggered by various factors including the grammatical characteristics of the Chinese language, lexicalization, the context and co-text of Chinese source texts, the translator's stylistic considerations, the translator's considerations of syntagmatic economy, social and cultural factors, and the content of the Chinese source texts.
Peltoperlopsis Illies 1966
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Peltoperlidae
Peltoperlopsis

description: Provisional key to Peltoperlopsis males 1 Mainland species; aedeagus symmetrical (Fig. 65) ………………………………………………...……. 2 1’ Island species; aedeagus asymmetrical (Fig. 58) ……………………………...………………………. 5 2 General color dark brown ………………………. 3 2’ General color yellow or pale brown.………….. 4 3 Tergum 10 with U-shaped sclerite; vesicle broadly arcuate, shorter than wide; aedeagus with dorsolateral pair of narrow sclerites; known from Vietnam.………………………………….. malickyi 3’ Tergum 10 apparently without U-shaped sclerite; vesicle longer than wide; known from Yunnan, China ……………………………………... nigrifulva 4 Cercal segments with enlarged dorsal bristles on mid segments (Fig. 66); vesicle broadly arcuate, shorter than wide (Fig. 64); ventroapical aedeagal lobes sparsely armed laterally with fine setal-like spines, apex bilobed (Fig. 65) …………….. spinosa 4’ Cercal segments without conspicuously enlarged dorsal bristles; vesicle about as wide as long (Fig. 69); ventroapical aedeagal lobes armed laterally with dense patch of fine setal-like spines, apex indistinctly lobed (Fig. 70) ……………….. swanni 5 Known from the Philippines …………………….. 6 5’ Known from Borneo …………………………….. 7 6 Sinistral aedeagal lobe weakly sclerotized along ventrolateral margin (Fig. 52); aedeagal lobes armed with small spines and microtrichia (Fig. 55) ………………………………………………. cebuano 6’ Sinistral aedeagal lobe membranous; aedeagal lobes armed with apical patch of cultriform spines ………………………………………….. mindanensis 7 Sinistral aedeagal lobe bifurcate apically and armed with a few large spines at dorsolateral margin (Fig. 46) …………………………... anomala 7’ Sinistral aedeagal lobe trifurcate apically and armed dorsolaterally with small spicules; known from Mt. Kinabalu ………………………… concolor
description: Published as part of Stark, Bill P. & Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), pp. 104-126 in Illiesia 3 (12) on page 125, DOI: 10.5281/zenodo.4754627
GeV Gamma-ray Flux Upper Limits from Clusters of Galaxies
Creators: name: al., M. Ackermann et
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The detection of diffuse radio emission associated with clusters of galaxies indicates populations of relativistic leptons infusing the intracluster medium. Those electrons and positrons are either injected into and accelerated directly in the intracluster medium, or produced as secondary pairs by cosmic-ray ions scattering on ambient protons. Radiation mechanisms involving the energetic leptons together with decay of neutral pions produced by hadronic interactions have the potential to produce abundant GeV photons. Here, we report on the search for GeV emission from clusters of galaxies using data collected by the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope (Fermi) from August 2008 to February 2010. Thirty-three galaxy clusters have been selected according to their proximity and high mass, X-ray flux and temperature, and indications of non-thermal activity for this study. We report upper limits on the photon flux in the range 0.2-100 GeV towards a sample of observed clusters (typical values 1-5 x 10^-9 ph cm^-2 s^-1) considering both point-like and spatially resolved models for the high-energy emission, and discuss how these results constrain the characteristics of energetic leptons and hadrons, and magnetic fields in the intracluster medium. The volume-averaged relativistic-hadron-to-thermal energy density ratio is found to be < 5-10% in several clusters.
description: 9 pages, 3 tables, 1 figure, accepted for publication in ApJ Letters
Effect of operating conditions and particle properties on electrostatics and entrainment in gas-solid fluidized beds
Creators: name: Al-Smari, Turki A
Publisher: name: University of British Columbia
Year: 2014

description: The effects of superfical gas velocity, pressure, and temperature on entrainment and electrostatic charge with glass beads and polyethylene as bed particles were investigated in a fluidization column of 0.15 m inner diameter and 2.0 m height. Four collision probes at different levels, a freeboard sampler, and a current detection pipe measured the electrostatics in the bed, freeboard, and column exit. The entrainment and electrostatic charge inside the bed and freeboard region increased as the superficial gas velocity or pressure increased. Temperature had negligible effect on the entrainment over the limited range studied. However, electrostatic charges decreased and the charge polarity reversed as the bed temperature increased from 20 to 75 °C. The calculated electrostatic forces resulting from fine-fine and fine-coarse particle interactions are comparable to the gravitational force on fine particles in the fluidized bed. Entrainment empirical correlations developed in this work showed much better performance after the effect of electrostatic forces was taken into account, with the entrainment flux deceasing as electrostatic forces increase. The Choi et al. (1999) entrainment correlation shows better prediction of the entrainment flux in our system after the effect of the electrostatic force is considered. The electrostatic charges in the bed decreased with increasing air relative humidity. The charge density of fines decreased and entrainment increased as the air relative humidity increased. The relative humdity had no effect on the charge density or entrainment of polyethylene particles, which can also probably be attributed to the hydrophobic nature of polyethylene. The magnitude of electrostatic charges generated inside the fluidized bed increased slightly as the size of the coarse particles decreased. The entrainment decreased as the coarse particle size decreased. The electrostatic charges increased and entrainment decreased as the coarse particle density increased. The magnitude of electrostatic charges generated inside the fluidized bed increased and entrainment decreased as the fine particle density increased. The electrostatic charges and entrainment also increased as the fine concentration increased. The fines concentration had little or no effect on fines charge densities. Bipolar charging was observed in all experiments with fine particles charged positively, whereas large particles were charged negatively.