cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Comparison of a Youth and a General Ice Hockey Helmet Test Protocol
Creators: name: Cutler, Jarett
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Youth
Ice Hockey
Head Injury
Test Protocol

description: Ice hockey helmet standards are employed to test ice hockey helmets to ensure that they mitigate the risk of traumatic brain injuries. These standards primarily reflect adult ice hockey players' anthropometrics and play styles; however, they may not address youth ice hockey players anthropometrics and play styles. This study created a youth helmet test protocol using head impact characteristics specific to the Learn to Play (5-8 years old) youth ice hockey age group environment. The youth helmet test protocol was compared to a general helmet test protocol with the head mass, shoulder mass, and impacting velocities modified to reflect real-world conditions. The dependent variables used in the study included peak resultant linear acceleration, peak resultant rotational velocity, peak resultant rotational acceleration, and maximal principal strain (MPS). Two-way ANOVA identified significant interactions between the test protocols and two helmets tested in this study. This was followed by ANOVA to test for significance across the levels of the independent variables followed by paired t-tests to identify significant differences between the test protocols for each dependent variable for the head to boards and shoulder to head condition (p<0.05). The only significant difference identified between the test protocols for the head to ice condition was linear acceleration. The paired t-tests identified significant differences between the two helmets for all dependent variables for the head to ice and head to boards conditions (p<0.05). The results from this study revealed that youth are being exposed to similar amounts of brain trauma when compared to adults for the head to ice event. The head to ice condition is one of the most common types of impact events in the Learn to Play age group supporting the need to consider a youth specific ice hockey helmet standard test. This study demonstrated that the CCM FL 500 provided better protection for youth ice hockey players, and helmet companies could employ similar technologies to better protect youth from the risk of brain injuries.
Radio and X-ray observations of jet ejection in Cygnus X-2
Creators: name: Spencer, R. E.
name: Rushton, A. P.
name: Balucinska-Church, M.
name: Paragi, Z.
name: Schulz, N. S.
name: Wilms, J.
name: Pooley, G. G.
name: Church, M. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The ejection of a relativistic jet has been observed in the luminous Galactic low mass X-ray binary Cygnus X-2. Using high resolution radio observations, a directly resolved ejection event has been discovered while the source was on the Horizontal Branch of the Z-track. Contemporaneous radio and X-ray observations were made with the European VLBI Network at 6 cm and the Swift X-ray observatory in the 0.3 - 10 keV band. This has been difficult to achieve because of the previous inability to predict jet formation. Two sets of ~10 hr observations were spaced 12 hr apart, the jet apparently switching on during Day 1. The radio results show an unresolved core evolving into an extended jet. A preliminary value of jet velocity v/c of 0.33 +/- 0.12 was obtained, consistent with previous determinations in Galactic sources. Simultaneous radio and X-ray lightcurves are presented and the X-ray hardness ratio shows the source to be on the Horizontal Branch where jets are expected. The observations support our proposal that jet formation can in future be predicted based on X-ray intensity increases beyond a critical value.
description: minor changes; accepted for publication in MNRAS (Letters)
Targeted delivery of epirubicin to cancerous cell using copper sulphide nanoparticle coated with polyarginine and 5TR1 aptamer
Creators: name: Alizadeh, Fatemeh
name: Yaghoobi, Elnaz
name: Imanimoghadam, Maryam
name: Ramezani, Mohammad
name: Alibolandi, Mona
name: Abnous, Khalil
name: Taghdisi, Seyed Mohammad
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biochemistry
Space Science
Medicine
Cell Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer
Hematology

description: Chemotherapy has been widely acknowledged as a primary approach for cancer treatment. However, the administration of chemotherapy agents is often limited by their adverse effects that result from an inability to distinguish between healthy and malignant cells. As such, utilising nanocarriers in targeted drug delivery can significantly reduce these side effects while enhancing therapeutic efficacy. Herein, we developed copper sulphide nanoparticles (CuSNPs) loaded with epirubicin (Epi) coated by polyarginine and 5TR1 aptamer (CEPA) to target mucin-1 which is overexpressed on various types of cancer cells. MTT results revealed that CEPA significantly induced cytotoxicity of the drug in desired cell lines (C26 and MCF-7, mucin+) compared to CEPA-treated CHO cells (non-target, mucin−), verifying the targeting ability of CEPA complex. The obtained results from both flow cytometry analysis and cell imaging demonstrated that CEPA complex had successful internalisation in both target cell lines but no internalisation in CHO cell line. The result of in vivo assay showed more tumour inhibition and more accumulation in tumour tissue for CEPA complex in comparison to free Epi. To conclude, the CEPA complex has demonstrated superior efficacy and fewer adverse reactions compared to Epi. This indicates a promising and effective strategy for treating cancer.
Ligand Discrimination in Myoglobin from Linear-Scaling DFT+U
Creators: name: Cole, Daniel J.
name: O'Regan, David D.
name: Payne, Mike C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Myoglobin modulates the binding of diatomic molecules to its heme group via hydrogen-bonding and steric interactions with neighboring residues, and is an important benchmark for computational studies of biomolecules. We have performed calculations on the heme binding site and a significant proportion of the protein environment (more than 1000 atoms) using linear-scaling density functional theory and the DFT+U method to correct for self-interaction errors associated with localized 3d states. We confirm both the hydrogen-bonding nature of the discrimination effect (3.6 kcal/mol) and assumptions that the relative strain energy stored in the protein is low (less than 1 kcal/mol). Our calculations significantly widen the scope for tackling problems in drug design and enzymology, especially in cases where electron localization, allostery or long-ranged polarization influence ligand binding and reaction.
description: 15 pages, 3 figures. Supplementary material 8 pages, 3 figures. This version matches that accepted for J. Phys. Chem. Lett. on 10th May 2012
A valuation theoretic characterization of recursively saturated real closed fields
Creators: name: D'Aquino, Paola
name: Kuhlmann, Salma
name: Lange, Karen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic (math.LO)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 06A05, 12J10, 12J15, 12L12, 13A18

description: We give a valuation theoretic characterization for a real closed field to be recursively saturated. Our result extends the characterization of Harnik and Ressayre \cite{hr} for a divisible ordered abelian group to be recursively saturated.
description: 18 pages
Incongruity of the unified scheme with a 3CRR-like equatorial strong-source sample
Creators: name: Singal, Ashok K.
name: Singh, Raj Laxmi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We examine the consistency of the unified scheme of the powerful extragalactic radio sources with the 408 MHz BRL sample from the equatorial sky region, selected at the same flux-density level as the 3CRR sample. We find that, unlike in the 3CRR sample, a foreshortening in the observed sizes of quasars, expected from the orientation-based unified scheme model, is not seen in the BRL sample, at least in different redshift bins up to z~1. Even the quasar fraction in individual redshift bins up to z~1 does not match with that expected from the unified scheme, where radio galaxies and quasars are supposed to belong to a common parent population at all redshifts. This not only casts strong doubts on the unified scheme, but also throws up an intriguing result that in a sample selected from the equatorial sky region, using almost the same criteria as in the 3CRR sample from the northern hemisphere, the relative distribution of radio galaxies and quasars differs qualitatively from the 3CRR sample.
description: 5 pages, 6 figures, 1 table
Targeted delivery of epirubicin to cancerous cell using copper sulfide nanoparticle coated with polyarginine and 5TR1 aptamer
Creators: name: Alizadeh, Fatemeh
name: Yaghoobi, Elnaz
name: Imanimoghadam, Maryam
name: Ramezani, Mohammad
name: Alibolandi, Mona
name: Abnous, Khalil
name: Taghdisi, Seyed Mohammad
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biochemistry
Space Science
Medicine
Cell Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer

description: Chemotherapy has been widely acknowledged as a primary approach for cancer treatment. However, the administration of chemotherapy agents is often limited by their adverse effects that result from an inability to distinguish between healthy and malignant cells. As such, utilizing nanocarriers in targeted drug delivery can significantly reduce these side effects while enhancing therapeutic efficacy. Herein, we developed copper sulfide nanoparticles (CuSNPs) loaded with epirubicin (Epi) coated by polyarginine and 5TR1 aptamer (CEPA) to target mucin-1 which is overexpressed on various types of cancer cells. MTT results revealed that CEPA significantly induced cytotoxicity of the drug in desired cell lines (C26 and MCF-7, mucin+) compared to CEPA-treated CHO cells (non-target, mucin-), verifying the targeting ability of CEPA complex. The obtained results from both flow cytometry analysis and cell imaging demonstrated that CEPA complex had successful internalization in both target cell lines but no internalization in CHO cell line. The result of in vivo assay showed more tumor inhibition and more accumulation in tumor tissue for CEPA complex in comparison to free Epi. To conclude, the CEPA complex has demonstrated superior efficacy and fewer adverse reactions compared to Epi. This indicates a promising and effective strategy for treating cancer.
Half-Saturation Constants in Functional Responses
Creators: name: Mulder, Christian
name: Hendriks, A. Jan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Our aim is to provide an overview of half-saturation constants reported in literature and to explore their consistency with body size. In many ecological models, intake of nutrients by plants and consumption of food by animals is considered to be a hyperbolic function of the nutrient concentration and the food density, respectively. However, data on the concentration (or density) at which half of the maximum intake rate is reached are scarce, limiting the applicability of the computational models. The meta-analysis was conducted on literature published worldwide. Most studies focused on algae and invertebrates, whereas some included fish, birds and mammals. The half-saturation constants obtained were linked to body size using ordinary regression analysis. The observed trends were compared to those noted in reviews on other density parameters. Half-saturation constants for different clades range within one or two orders of magnitude. Although these constants are inherently variable, exploring allometric relationships across different taxa helps to improve consistent parameterization of ecological models.
description: 6 pages, 4 figures, 1 table
Set intersection problems: Supporting hyperplanes and quadratic programming
Creators: name: Pang, C. H. Jeffrey
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C30, 90C59, 47J25, 47A46, 47A50, 52A20, 41A50, 41A65, 46C05, 49J53, 65K10

description: We study how the supporting hyperplanes produced by the projection process can complement the method of alternating projections and its variants for the convex set intersection problem. For the problem of finding the closest point in the intersection of closed convex sets, we propose an algorithm that, like Dykstra's algorithm, converges strongly in a Hilbert space. Moreover, this algorithm converges in finitely many iterations when the closed convex sets are cones in $\mathbb{R}^{n}$ satisfying an alignment condition. Next, we propose modifications of the alternating projection algorithm, and prove its convergence. The algorithm converges superlinearly in $\mathbb{R}^{n}$ under some nice conditions. Under a conical condition, the convergence can be finite. Lastly, we discuss the case where the intersection of the sets is empty.
description: 25 pages, 3 figures
Universal corrections to the entanglement entropy in gapped quantum spin chains: a numerical study
Creators: name: Levi, Emanuele
name: Castro-Alvaredo, Olalla A.
name: Doyon, Benjamin
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We carry out a numerical study of the bi-partite entanglement entropy in the gapped regime of two paradigmatic quantum spin chain models: the Ising chain in an external magnetic field and the anti-ferromagnetic XXZ model. The universal scaling limit of these models is described by the massive Ising field theory and the SU(2)-Thirring (sine-Gordon) model, respectively. We may therefore exploit quantum field theoretical results to predict the behaviour of the entropy. We numerically confirm that, in the scaling limit, corrections to the saturation of the entropy at large region size are proportional to the Bessel function K0(2mr) where m is a mass scale (the inverse correlation length) and r the length of the region under consideration. The proportionality constant is simply related to the number of particle types in the universal spectrum. This was originally predicted in publications involving two of the current authors for two-dimensional quantum field theories. Away from the universal region our numerics suggest an entropic behaviour following quite closely the quantum field theory prediction, except for extra dependencies on the correlation length.
description: 5 pages, 8 figures
Economic incentives modify agricultural impacts of a regional nuclear war concerning food insecurity and famine
Creators: name: Hochman, Gal
name: Zhang, Hainan
name: Xia, Lili
name: Robock, Alan
name: Aleti, Saketh
name: Van Der Mensbrugghe, Dominique Y.
name: Jagermeyr, Jonas
name: Hochman, Gal
name: Zhang, Hainan
name: Xia, Lili
name: Robock, Alan
name: Aleti, Saketh
name: Van Der Mensbrugghe, Dominique Y.
name: Jagermeyr, Jonas
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: International Relations/Trade
subject: Climate Models
subject: Crop models
subject: Computable General Equilibrium Model
subject: Envisage
subject: Partial equilibrium
subject: Simulated regional nuclear war

description: A nuclear war using less than 1% of the current global nuclear arsenal could produce climate change unprecedented in recorded human history and large impacts on agricultural productivity. These e↵ects would be most severe for the first five years after the nuclear war and may last for more than a decade. This paper calculates how the price and availability of food worldwide would change by employing the Environmental Impact and Sustainability Applied General Equilibrium model. It evaluates how results depend on assumptions about how free trade would continue in a post-war economic environment. The results suggest that preserving the world trading system is key to preventing widespread food shortages as a thriving world trading system minimizes the costs born from disruptions to climate. The analysis shows that the regional nuclear war scenario would a↵ect regional food supply systems, especially in high latitude regions. Although the global average impact on wheat is only a few percentage points, the regional nuclear war leads wheat production in EU 28 countries to plumed, on average, by more than 15%. The model also suggests that regional impacts may result in a plausible domino e↵ect with substantial negative ramifications for local food supplies.
INTERIOR ENVIRONMENT MODELING FOR RESILIENT EXTRA-TERRESTRIAL HABITATS
Creators: name: Lial, Amanda J
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Mechanical engineering not elsewhere classified
Modelling and simulation
Models and simulations of design

description: There are several challenges that occur when creating extraterrestrial structures that are not relevant to terrestrial applications. The Resilient Extra-Terrestrial Habitat Institute is a NASA funded research project focused on developing resilient lunar habitats. In order to develop these deep-space structures, many considerations have to be made to account for scenarios that are not relevant to Earth. Such scenarios include meteorite impacts, moonquakes, radiation, and moon dust accumulation. To observe possible consequences of these disruptions, RETHi established a modular coupled virtual testbed to monitor the effects of different deep-space related situations. MCVT is a computer model of a lunar habitat that uses a system-of-systems approach to examine the impacts of these scenarios. Currently, MCVT is developing methods to confront these extraterrestrial situations by utilizing robotic agents and expanding upon a variety of safety responses to increase resiliency. RETHi also utilizes a cyber physical testbed to run cyber-physical experiments to validate the approaches used in MCVT.
 One of the numerous models in MCVT is the Habitat Interior Environment Model. HIEM monitors the interior environment of the lunar structure using physics-based calculations and inputs from its surroundings. There are three main disturbances that directly affect the interior environment—fire within the dome, meteorite impacts, and airlock failure. Such scenarios either increase or decrease the temperature and pressure. This data is then forwarded to other subsystems for further evaluation. HIEM can be remodeled to fit the pressure box in the cyber physical testbed. By doing so, it is then possible to validate the pressure leakage calculations used in HIEM using experimental data. HIEM is specifically designed to the lunar habitat currently in development; however, the model can be refitted to a variety of applications such as terrestrial, aerospace, space, and marine.
The Fast and Furious Decay of the Peculiar Type Ic Supernova 2005ek
Creators: name: Drout, M. R.
name: Soderberg, A. M.
name: Mazzali, P. A.
name: Parrent, J. T.
name: Margutti, R.
name: Milisavljevic, D.
name: Sanders, N. E.
name: Chornock, R.
name: Foley, R. J.
name: Kirshner, R. P.
name: Filippenko, A. V.
name: Li, W.
name: Brown, P. J.
name: Cenko, S. B.
name: Chakraborti, S.
name: Challis, P.
name: Friedman, A.
name: Ganeshalingam, M.
name: Hicken, M.
name: Jensen, C.
name: Modjaz, M.
name: Perets, H. B.
name: Silverman, J. M.
name: Wong, D. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present extensive multi-wavelength observations of the extremely rapidly declining Type Ic supernova, SN 2005ek. Reaching a peak magnitude of M_R = -17.3 and decaying by ~3 mag in the first 15 days post-maximum, SN 2005ek is among the fastest Type I supernovae observed to date. The spectra of SN 2005ek closely resemble those of normal SN Ic, but with an accelerated evolution. There is evidence for the onset of nebular features at only nine days post-maximum. Spectroscopic modeling reveals an ejecta mass of ~0.3 Msun that is dominated by oxygen (~80%), while the pseudo-bolometric light curve is consistent with an explosion powered by ~0.03 Msun of radioactive Ni-56. Although previous rapidly evolving events (e.g., SN 1885A, SN 1939B, SN 2002bj, SN 2010X) were hypothesized to be produced by the detonation of a helium shell on a white dwarf, oxygen-dominated ejecta are difficult to reconcile with this proposed mechanism. We find that the properties of SN 2005ek are consistent with either the edge-lit double detonation of a low-mass white dwarf or the iron-core collapse of a massive star, stripped by binary interaction. However, if we assume that the strong spectroscopic similarity of SN 2005ek to other SN Ic is an indication of a similar progenitor channel, then a white-dwarf progenitor becomes very improbable. SN 2005ek may be one of the lowest mass stripped-envelope core-collapse explosions ever observed. We find that the rate of such rapidly declining Type I events is at least 1-3% of the normal SN Ia rate.
description: Accepted for publication in ApJ. Please visit http://www.cfa.harvard.edu/~mdrout to hear a sonification of SN2005ek
АНАЛИЗ ВЛИЯНИЯ КРУГОВОЙ ТРЕНИРОВКИ НА ПОДГОТОВКУ БАСКЕТБОЛИСТОВ
Creators: name: Козлова, Галина
Publisher: name: Zenodo
Year: 2023

description: Данная статья представляет обзор влияния круговой тренировки на физическую и техническую подготовку баскетболистов. Рассматриваются основные преимущества использования круговых тренировок, таких как развитие выносливости, силы, гибкости и технических навыков, а также их роль в улучшении спортивных достижений игроков. Автор подчеркивает значимость индивидуального подхода к тренировочному процессу для максимизации выгод от использования данной методики.
Improving Robustness via Disjunctive Statements in Imperative Programming
Creators: name: Kwon, Keehang
name: Hur, Sungwoo
name: Park, Mi-Young
Publisher: name: arXiv
Year: 2012
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: To deal with failures as simply as possible, we propose a new foun- dation for the core (untyped) C, which is based on a new logic called task logic or imperative logic. We then introduce a sequential-disjunctive statement of the form S : R. This statement has the following semantics: execute S and R sequentially. It is considered a success if at least one of S;R is a success. This statement is useful for dealing with inessential errors without explicitly catching them.
A Massive Pulsar in a Compact Relativistic Binary
Creators: name: Antoniadis, John
name: Freire, Paulo C. C.
name: Wex, Norbert
name: Tauris, Thomas M.
name: Lynch, Ryan S.
name: van Kerkwijk, Marten H.
name: Kramer, Michael
name: Bassa, Cees
name: Dhillon, Vik S.
name: Driebe, Thomas
name: Hessels, Jason W. T.
name: Kaspi, Victoria M.
name: Kondratiev, Vladislav I.
name: Langer, Norbert
name: Marsh, Thomas R.
name: McLaughlin, Maura A.
name: Pennucci, Timothy T.
name: Ransom, Scott M.
name: Stairs, Ingrid H.
name: van Leeuwen, Joeri
name: Verbiest, Joris P. W.
name: Whelan, David G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Quantum Gases (cond-mat.quant-gas)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Many physically motivated extensions to general relativity (GR) predict significant deviations in the properties of spacetime surrounding massive neutron stars. We report the measurement of a 2.01 +/- 0.04 solar mass pulsar in a 2.46-hr orbit with a 0.172 +/- 0.003 solar mass white dwarf. The high pulsar mass and the compact orbit make this system a sensitive laboratory of a previously untested strong-field gravity regime. Thus far, the observed orbital decay agrees with GR, supporting its validity even for the extreme conditions present in the system. The resulting constraints on deviations support the use of GR-based templates for ground-based gravitational wave detectors. Additionally, the system strengthens recent constraints on the properties of dense matter and provides insight to binary stellar astrophysics and pulsar recycling.
description: This is the authors' version of the work. The definite version is published in Science Online, 26 April 2013, Vol: 340, Issue: 6131 doi: 10.1126/science.1233232. 54 pages, 18 figures, 4 tables
1887 Michelson-Morley experiment: a new analysis with computer assistance
Creators: name: Zhang, Wen-an
Publisher: name: Zenodo
Year: 2022
Subjects: Michelson-Morley experiment, detection of ether, simulation of experiment

description: The captioned experiment was long in dispute for interpreting its small result compared with the expected measurement. To investigate the origin of those comparison numbers, I simulated the experiment on a computer, from which the path difference between the two arms and the lateral splits between the two coincident beams were obtained for calculating the average fringes. The zeroed results of the simulation fringes after their average treatments and the analyzed root causes that led to such unexpected outcomes revealed the reason why the M-M experiment measured a small result of the fringe shift. Also, scrutinizing its operational method also found that the repeated manual adjustments to the movable mirror certainly brought uncertainty about the accuracy of the original observations. Thus, this work suggests the M-M experiment to be concluded as delivering no result instead of reporting a null result, meaning that Newton's conception of absolute space may still be a valid proposal for the science of physics. In addition, this manuscript also suggests two new ideas to detect the possible existence of absolute space, one is to measure the free-fall acceleration rate variation at different latitudes within certain time intervals, and the other is to conduct radar wave measurements with the proposed melioration, see another preprint by the same author titled "Gravity's fluctuation derives from its speed—a constant to the absolute space assumed" (https://doi.org/10.5281/zenodo.7395522).
Augmented Reality in Astrophysics
Creators: name: Vogt, Frédéric P. A.
name: Shingles, Luke J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Augmented Reality consists of merging live images with virtual layers of information. The rapid growth in the popularity of smartphones and tablets over recent years has provided a large base of potential users of Augmented Reality technology, and virtual layers of information can now be attached to a wide variety of physical objects. In this article, we explore the potential of Augmented Reality for astrophysical research with two distinct experiments: (1) Augmented Posters and (2) Augmented Articles. We demonstrate that the emerging technology of Augmented Reality can already be used and implemented without expert knowledge using currently available apps. Our experiments highlight the potential of Augmented Reality to improve the communication of scientific results in the field of astrophysics. We also present feedback gathered from the Australian astrophysics community that reveals evidence of some interest in this technology by astronomers who experimented with Augmented Posters. In addition, we discuss possible future trends for Augmented Reality applications in astrophysics, and explore the current limitations associated with the technology. This Augmented Article, the first of its kind, is designed to allow the reader to directly experiment with this technology.
description: 15 pages, 11 figures. Accepted for publication in Ap&SS. The final publication will be available at link.springer.com
O SECRETO, O ESCONDIDO, O FURTIVO E A REPÚBLICA
Creators: name: Pavao Santana, Jose Claudio
Publisher: name: Zenodo
Year: 2025

description: Ano 11 – n. 52/2023 – https://doi.org/10.5281/zenodo.8321892

Sem qualquer atenção à postura republicana o presidente da

república, ontem, dia 5 de setembro de 2023 (em pleno século XXI)

resolveu dar um “conselho” ao povo e ao Supremo Tribunal Federal.

Disse de viva voz que o povo não precisa saber como os ministros

votam.
РОЛЬ И ВЛИЯНИЕ ПОДВИЖНЫХ ИГР НА ФИЗИЧЕСКОЕ РАЗВИТИЕ СТУДЕНТОВ: ОСНОВА ЗДОРОВОГО ОБРАЗА ЖИЗНИ
Creators: name: Рузиева, Махлиё
Publisher: name: Zenodo
Year: 2023

description: Статья рассматривает важность и влияние подвижных игр на физическое развитие студентов в университете. Исследование обобщает пользу физической активности через игры на общее здоровье, академическую производительность, социальную интеграцию и психологическое благополучие студентов. Результаты исследования подчеркивают важность подвижных игр как ключевого элемента поддержания здорового образа жизни и благополучия.
Spin interactions in mesons in strong magnetic field
Creators: name: Simonov, Yu. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Spin interactions in relativistic quark-antiquark system in magnetic field is considered in the framework of the relativistic Hamiltonian, derived from the QCD path integral. The formalism allows to separate spin-dependent terms from the basic spin-independent interaction, contained in the Wilson loop, and producing confining and gluon exchange interaction. As a result one obtains relativistic spin-spin interaction $V_{ss}$, generalizing its nonrelativistic analog. It is shown, that in large magnetic field $eB, V_{ss}$ modifies and produces hyperfine shifts which grow linearly with $eB$ and preclude the use of perturbation theory. We also show, that tensor forces for $eB \neq 0$ are active in all meson states, but do not grow with $eB$
description: 26 pages
Compressed correlation functions and fast aging dynamics in metallic glasses
Creators: name: Ruta, B.
name: Baldi, G.
name: Monaco, G.
name: Chushkin, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present x-ray photon correlation spectroscopy measurements of the atomic dynamics in a Zr67Ni33 metallic glass, well below its glass transition temperature. We find that the decay of the density fluctuations can be well described by compressed, thus faster than exponential, correlation functions which can be modeled by the well-known Kohlrausch-Williams-Watts function with a shape exponent β larger than one. This parameter is furthermore found to be independent of both waiting time and wave-vector, leading to the possibility to rescale all the correlation functions to a single master curve. The dynamics in the glassy state is additionally characterized by different aging regimes which persist in the deep glassy state. These features seem to be universal in metallic glasses and suggest a non diffusive nature of the dynamics. This universality is supported by the possibility of describing the fast increase of the structural relaxation time with waiting time using a unique model function, independently of the microscopic details of the system.
description: 7 pages, 4 figures. To be published in J. Chem. Phys
Minería, planificación y gestión de riesgos. Una valoración de organizaciones no-gubernamentales en América Latina y el Caribe
Creators: name: Malavé Figueroa, Adelso Nikolai
Publisher: name: figshare
Year: 2021
Subjects: subject: 60306 Evolutionary Impacts of Climate Change
subject: FOS: Biological sciences
subject: 50101 Ecological Impacts of Climate Change
subject: FOS: Earth and related environmental sciences
subject: 40104 Climate Change Processes
subject: 150205 Investment and Risk Management
subject: FOS: Economics and business
subject: 91405 Mining Engineering
subject: FOS: Environmental engineering

description: e objective of this research was to prepare apreliminary profile about the perception reserved by nongovernmentalorganizations (NGOs) regarding the series ofimpacts of mining extraction, sustainable territorial planningprocesses and disaster risk management, the latter with a focus onresilience and adaptation to climate change in Latin America andthe Caribbean as axes of sustainable development. is purposewas complemented in the literature on sustainability and thepresumed good mining practices promoted by industries in thefield. e study is descriptive, cross-sectional and with a nonexperimentalfield design. A survey based on a Likert scale withacceptable reliability results (α = 0.95; p <0.05) was applied toa sample of non-governmental organizations, using specializedorganizations in at least one of the criteria for inclusion. thereferred topics. It is concluded, firstly, that the average of theNGO evaluations of the socio-environmental impacts revealed anegative level with a severe range and, secondly, that both disasterrisk management and sustainable territorial planning they reflecta regular degree of advancement.
Robust estimators for non-decomposable elliptical graphical models
Creators: name: Vogel, Daniel
name: Tyler, David E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62H12, 62H20, 62F35

description: Asymptotic properties of scatter estimators for elliptical graphical models are studied. Such models impose a given pattern of zeros on the inverse of the shape matrix of an elliptically distributed random vector. In particular, we introduce the class of graphical M-estimators and compare them to plug-in M-estimators. It turns out that, under suitable conditions, both approaches yield the same asymptotic efficiency. Furthermore, the results of this paper apply to both decomposable and non-decomposable graphical models and so generalize the results for decomposable models given by Vogel & Fried (2011) for the plug-in M-estimators.
description: 19 pages, 1 figure, 1 table
3-SINFLARDA TABIIY FANLARNI O'QITISHDA  O'QUVCHILARNI VIRTUAL MUHITGA OLIB KIRISH.
Creators: name: G'aniyeva, Gulhayo
Publisher: name: Zenodo
Year: 2023

description: Bugungi kunda dunyo miqyosida tabiiy fanlarni virtual muhitga olib kirish.multimedia vositalari asosida o'qitishni takomillashtirish, xalqaro baholash dasturlari darsda o'quvchilarni tabiiy-ilmiy savodxonligini oshirish sohasida keng ko'lamli islohotlarni amalga oshirishga bo'lgan ehtiyoj yanada kuchaymoqda. Bu borada samaradorlikka erishish hamda multimedia vositalarining rolini va ta'sirini oshirish, mavjud muammolarni konseptual o'rganish va tahlil qilish mavzuning dolzarbligini belgilaydi.
Ursa Major II - Reproducing the observed properties through tidal disruption
Creators: name: Smith, R.
name: Fellhauer, M.
name: Candlish, G. N.
name: Wojtak, R.
name: Farias, J. P.
name: Blaña, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent deep photometry of the dwarf spheroidal Ursa Major II's morphology, and spectroscopy of individual stars, have provided a number of new constraints on its properties. With a velocity dispersion $\sim$6 km s$^{-1}$, and under the assumption that the galaxy is virialised, the mass-to-light ratio is found to be approaching $\sim$2000 - apparently heavily dark matter dominated. Using N-Body simulations, we demonstrate that the observed luminosity, ellipticity, irregular morphology, velocity gradient, and the velocity dispersion can be well reproduced through processes associated with tidal mass loss, and in the absence of dark matter. These results highlight the considerable uncertainty that exists in measurements of the dark matter content of Ursa Major II. The dynamics of the inner tidal tails, and tidal stream, causes the observed velocity dispersion of stars to be boosted to values of $>$5 km s$^{-1}$ ($>$20 km s$^{-1}$ at times). This effect is responsible for raising the velocity dispersion of our model to the observed values in UMaII. We test an iterative rejection technique for removing unbound stars from samples of UMaII stars whose positions on the sky, and line-of-sight velocities, are provided. We find this technique is very effective at providing an accurate bound mass from this information, and only fails when the galaxy has a bound mass less than 10$%$ of its initial mass. However when $<2%$ mass remains bound, mass overestimation by $>$3 orders of magnitude are seen. Additionally we find that mass measurements are sensitive to measurement uncertainty in line-of-sight velocities. Measurement uncertainties of 1-4 km s$^{-1}$ result in mass overestimates by a factor of $\sim$1.3-5.7.
description: 17 pages, 12 figures, accepted to MNRAS: 23rd, May, 2013
Standardization and firms’ innovative activities within ecosystems : two essays on the Formula One industry
Creators: name: Pyun, Eugene
name: 0000-0001-9142-0091
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Innovation
Standardization
Technology
Ecosystem
Strategy

description: This dissertation studies how standardization can affect ecosystem member organizations’ innovations and performances both in organizational and individual levels. Standardization is an effective coordination tool to help ecosystems overcome coordination challenges by providing compatibility and interoperability within ecosystems. However, to achieve compatibility, standardization needs to fix and limit core technologies and components only to standardized cores and must enforce guidelines to its member organizations. In other words, the coordinating effect of standardization may require hefty prices from its ecosystem. To address the tension between standardization’s positive role as a coordination tool and necessary organizational costs to adopt standards, the current dissertation examines how standardization can influence various aspects of organizational functions. The dissertation is organized as the following. The first section a general introduction and overview of the dissertation. Then the dissertation proceeds to a literature review of relevant prior research on ecosystems and standardization that analyze the theoretical tension between standardization as a coordination tool and required costs to accommodate standards. The chapter will then proceed to identification of research opportunities based on the existing literature. Chapter I then demonstrates the constraining effect of standardization on firms’ innovation through the theoretical lens of knowledge recombination. In addition, using the perspectives of knowledge-based view and organizational change, Chapter II will analyze the disrupting effect of standardization on human capital performances within ecosystem member organizations. Lastly, the dissertation will then provide a conclusion and message of the dissertation. Using data on Formula One motorsports industry regarding standardization which consist of F1 teams’ innovations and drivers’ performances in 1970 - 2020, the dissertation empirically tests the proposed theories. The dissertation utilized machine learning based LDA topic modelling techniques to capture impacts of standardization on components of F1 race cars and track standardization activities among the components. The findings from the empirical analyses of this dissertation demonstrate that standardization can negatively affect various activities of ecosystems’ member organizations.
Theory of Cold Atoms: Basics of Quantum Statistics
Creators: name: Yukalov, V. I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The aim of this Tutorial is to present the basic mathematical techniques required for an accurate description of cold trapped atoms, both Bose and Fermi. The term {\it cold} implies that considered temperatures are low, such that quantum theory is necessary, even if temperatures are finite. And the term {\it atoms} means that the considered particles are structureless, being defined by their masses and mutual interactions. Atoms are {\it trapped} in the sense that they form a finite quantum system, though their number can be very large allowing for the use of the methods of statistical mechanics. This Tutorial is the first part of several tutorials, giving general mathematical techniques for both types of particle statistics. The following tutorials will be devoted separately to Bose atoms and Fermi atoms. The necessity of carefully explaining basic techniques is important for avoiding numerous misconceptions often propagating in literature.
description: Tutorial
Structural proteomics towards studying protein complexes in cellular context
Creators: name: McCafferty, Caitlyn L.
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Structural biology
Computational biology

description: Recent advances in cryo-electron microscopy (cryo-EM) allow for rapid and direct visualization of high-resolution three-dimensional (3D) structures. Unfortunately, current methods are often limited to identification of and structure determination for highly purified protein samples, preventing characterization of protein complex structures in their native form. Being able to determine a protein structure in the native biological “habitat” by imaging, for example, an unpurified cell lysate, is essential to understanding its role in the mechanisms that drive biological processes. Methods such as shotgun-electron microscopy (shotgun-EM) and cryo-electron tomography (cryo-ET) aim to study structural biology in the biological context of the cell, which allows for the definition of native interaction partners and identification of spatial information. However, a major and frequent tradeoff of imaging biological assemblies in a near-native context is a decrease in structure resolution. Integrating cryo-EM with complementary techniques such as mass spectrometry can allow for characterization of protein architectures without purifying for a specific target. Furthermore, protein-protein interactions identified by mass spectrometry or other computational methods, in conjunction with cutting-edge methods for 3D structure determination and prediction, can actually be used to investigate the architecture of multiple distinct protein complexes from a single mixture. Here, I detail computational methods that I have developed for determining protein interaction interfaces based on surface complementarity. This serves as a useful tool for determining how protein subunits may fit together within an EM map. I then describe an approach for using intermolecular evolutionary couplings between amino acids interfaces to assemble proteins into intermediate- to low-resolution EM maps. Because both of these methods are dependent on reliable protein structure, I then used in situ cross-linking mass spectrometry (XL/MS) to evaluate and improve the quality of AlphaFold predicted protein structures. Finally, I present the use of these methods to study native ciliary protein architectures, such as the intraflagellar transport A (IFT-A) complex. Ciliopathies are a class of diseases that arise from dysfunction in cilia. I show that using integrative methods to study the IFT-A architecture allows for the molecular interpretation of disease-associated alleles. The development and integration of these methods provides a toolbox for studying ciliary assemblies in their native environment and interpreting these lower resolution assemblies with the goal of providing a blueprint for the molecular basis of disease.
Supplementary material for the paper "Time-course of antipredator behavioral changes induced by the helminth Pomphorhynchus laevis in its intermediate host Gammarus pulex: the switch in manipulation according to parasite developmental stage differs between behaviors"
Creators: name: Rigaud, Thierry
Publisher: name: Zenodo
Year: 2023

description: Supplementary material including complementary statistical analyses and R codes used in the paper.
Low temperature area-selective atomic layer deposition of NiO, Ni and Pd for next-generation nanomanufacturing
Creators: name: Nallan Chakravarthula, Himamshu
name: 0000-0003-3758-1294
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Atomic layer deposition
Area-selective deposition
Nanomanufacturing

description: Nickel, nickel oxide and palladium are used within various device heterostructures for chemical sensing, solar cells, batteries, etc. There is increasing interest in realizing flexible, low-cost, wearable electronics to enable ubiquitous sensors, next-generation displays, and improved human-machine interfaces. A major hurdle for flexible technology is the development of low temperature fabrication processes for the integration of inorganic devices with polymeric substrates. Here we investigate area-selective atomic layer deposition of NiO performed at 100 °C using bis(N,N'-di-tert-butylacetamidinato)nickel(II) and water on SiO₂ and polystyrene. NiO grows two dimensionally and without nucleation delay on oxide substrates but not on SiN [subscript x] or polystyrene, which require surface treatments such as an Al₂O₃ buffer layer or O₂ plasma treatment to promote NiO nucleation. Additionally, pre-patterned sp² carbon-rich resists inhibit the nucleation of NiO. This way, carbon-free NiO may be patterned. A NiO grid pattern is fabricated as a demonstration. Additionally, thermal reduction of NiO to Ni was explored using H₂ (50-300 mTorr) and thermally generated H-atoms (3×10⁻⁵ Torr chamber pressure). Due to the relatively high free surface energy of metals, Ni films undergo dewetting at elevated temperatures when solid-state transport is enabled. Reduction of NiO to Ni is demonstrated at 100 °C and below using atomic hydrogen, a temperature low enough to be compatible with organic substrate temperature constraints as well as to avoid significant dewetting. Finally, the area-selective atomic layer deposition of Pd by area-activation is studied. Thermal atomic layer deposition of Pd can only proceed at low temperatures on surfaces that can dissociate the coreactant, H₂. Prepatterned Ni functions to catalyze the nucleation of Pd at 100 °C. H-atom reduction of NiO grown by atomic layer deposition can generate an atomically smooth Ni surface, which allows the growth of void-free Pd films. Finally, the area-selective atomic layer deposition of Pd on patterned Ni grid lines is explored.