cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
In memoriam Vasile Chirica (3.07.1943 – 18.04.2021)
Creators: name: Berzovan, Alexandru
Publisher: name: Zenodo
Year: 2021

description: Anul acesta a fost unul dificil pentru Institutul de Arheologie din Iași, fiind marcat de dispariția unuia dintre membrii săi marcanți, profesorul Vasile Chirica. A fost o lovitură grea nu doar pentru Institut, ci pentru întreaga arheologie din Moldova care a pierdut unul dintre reprezentanții săi de seamă. În acest context, mi-am propus să aștern câteva rânduri despre viața și activitatea sa.
Additional file 1 of Homogenous multifunctional microspheres induce ferroptosis to promote the anti-hepatocarcinoma effect of chemoembolization
Creators: name: Chen, Minjiang
name: Li, Jie
name: Shu, Gaofeng
name: Shen, Lin
name: Qiao, Enqi
name: Zhang, Nannan
name: Fang, Shiji
name: Chen, Xiaoxiao
name: Zhao, Zhongwei
name: Tu, Jianfei
name: Song, Jingjing
name: Du, Yongzhong
name: Ji, Jiansong
Publisher: name: figshare
Year: 2022
Subjects: Biochemistry
Molecular Biology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer

description: Additional file 1: Figure S1. The particle size of MS, ADM-MS and ADM/Fe3O4-MS. The results showed that the prepared MS, ADM-MS and ADM/Fe3O4-MS in this study had relatively uniform particle sizes, and the particle sizes of most microspheres were between 200 to 300 μm, which were 223.3 ± 91.1 μm, 210.8 ± 71.8 μm and 217.7 ± 57.4 μm, respectively. Figure S2. T2-weighted relaxation value of MS, ADM-MS and ADM/Fe3O4-MS with different contents.
Diurnal variations in the stratosphere of the ultrahot giant exoplanet WASP-121b
Creators: name: Mikal-Evans, Thomas
name: Sing, David K.
name: Barstow, Joanna K.
name: Kataria, Tiffany
name: Goyal, Jayesh
name: Lewis, Nikole
name: Taylor, Jake
name: Mayne, Nathan. J.
name: Daylan, Tansu
name: Wakeford, Hannah R.
name: Marley, Mark S.
name: Spake, Jessica J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The temperature profile of a planetary atmosphere is a key diagnostic of radiative and dynamical processes governing the absorption, redistribution, and emission of energy. Observations have revealed dayside stratospheres that either cool or warm with altitude for a small number of gas giant exoplanets, while other dayside stratospheres are consistent with constant temperatures. Here we report spectroscopic phase curve measurements for the gas giant WASP-121b, which constrain stratospheric temperatures throughout the diurnal cycle. Variations measured for a water vapour spectral feature reveal a temperature profile that transitions from warming with altitude on the dayside hemisphere to cooling with altitude on the nightside hemisphere. The data are well explained by models assuming chemical equilibrium, with water molecules thermally dissociating at low pressures on the dayside and recombining on the nightside. Nightside temperatures are low enough for perovskite (CaTiO3) to condense, which could deplete titanium from the gas phase and explain recent non-detections at the day-night terminator. Nightside temperatures are also consistent with the condensation of refractory species such as magnesium, iron, and vanadium. Detections of these metals at the day-night terminator suggest, however, that if they do form nightside clouds, cold trapping does not efficiently remove them from the upper atmosphere. Horizontal winds and vertical mixing could keep these refractory condensates aloft in the upper atmosphere of the nightside hemisphere until they are recirculated to the hotter dayside hemisphere and vaporised.
description: Published in Nature Astronomy (publisher version is Open Access)
In memoriam Alexandru Szentmiklosi (1971-2019)
Creators: name: Georgescu, Andrei
Publisher: name: Zenodo
Year: 2021

description: În acest an, Alexandru Szentmiklosi ar fi împlinit frumoasa vârsta de 50 de ani. Este vârsta la care mulți arheologi încep să valorifice „osânza științifică” (așa cum îi plăcea să spună) acumulată, dar și cercetările arheologice întreprinse. Sanyi, așa cum îi spuneau apropiații, dobândise suficient din ambele. Cariera de arheolog de teren și-a început-o încă din vremea liceului, când a participat pe șantierele mentorului său, Florin Medeleț. Alături de acesta a participat la cercetările de la Remetea Mare, Peciu Nou, Voiteni sau Cugir, preluând de la el meticulozitatea și acribia documentării contextelor arheologice. Experiența sa în săpătură a fost desăvârșită prin participarea în numeroase colaborări internaționale cum ar fi proiectele de la Uivar sau Pecica, în vestul României ori Bartholom berg, în vestul Austriei. Astfel a căpătat experiența necesară demarării unuia dintre cele mai mari proiecte de cercetare arheologică din Banat, cel de la Cornești-Iarcuri. Cercetarea de la Iarcuri a demarat în anul 2007, fiind începută alături de bunul său prieten Bernhard Heeb (Museum für Vor- und Frühgeschichte, Berlin), angrenând de-a lungul anilor numeroase instituții de prestigiu din Europa.
Profesorul Marin Cârciumaru la cea de-a 80-a aniversare: peste 50 de ani de activitate de cercetare arheologică
Creators: name: Elena-Cristina Nițu
name: Cîrstina, Ovidiu
Publisher: name: Zenodo
Year: 2021

description: Pe data de 26 octombrie 2021, profesorul Marin Cârciumaru a împlinit 80 de ani de viață. Și-a sărbătorit aniversarea alături de colaboratori, la puțin timp după finalizarea unei campanii lungi de cercetări arheologice, la care a participat activ, în situl Poiana Cireșului-Piatra Neamț. Pe lângă activitățile pe teren, în prezent este implicat în mai multe proiecte de cercetare, astfel că vârsta nu pare să-și fi lăsat deloc amprenta asupra lui. Noi nu l-am cunoscut altfel decât ca fiind o persoană activă, foarte implicat în cercetările pe care le avea de realizat și, mai ales, în finalizarea și valorificarea lor.
The effect of mood induction on fear reduction
Creators: name: Samson, Deborah Christine Veronica
Publisher: name: University of British Columbia
Year: 2010

description: The present research examined the relationship between mood and fear. A musical mood induction technique was utilized to induced either a happy mood or a sad mood in eighty-four female university students fearful of spiders or snakes. Following mood induction, subjects underwent in vivo systematic desensitization to reduce their fear. Fear levels were reassessed four weeks later and those subjects who showed a return of fear underwent a second session of exposure therapy. Measures of subjective fear and self-efficacy were taken before and after mood induction and again after fear reduction. The length of time taken to reduce fear was also recorded. The findings showed that an induced sad mood led to greater subjective fear and lower self-efficacy compared with an induced happy mood. In addition, an induced sad mood during fear reduction was associated with greater return of fear four weeks later. No difference was found in the length of time taken to reduce fear for happy and sad subjects. This study also addressed the issue of mood state dependency of fear reduction. It was hypothesized that subjects who underwent their second session of fear reduction while in a mood state congruent with that of their first session would show more rapid habituation than those in an incongruent mood state. The results did not support this hypothesis. If the findings of this investigation prove generalizable to clinical depression, they suggest that the most effective approach in treating individuals who are both clinically depressed and anxious may be to treat the depression before beginning exposure to fearful situations or stimuli.
Sampling bias in systems with structural heterogeneity and limited internal diffusion
Creators: name: Onnela, Jukka-Pekka
name: Johnson, Neil F.
name: Gourley, Sean
name: Reinert, Gesine
name: Spagat, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Complex systems research is becomingly increasingly data-driven, particularly in the social and biological domains. Many of the systems from which sample data are collected feature structural heterogeneity at the mesoscopic scale (i.e. communities) and limited inter-community diffusion. Here we show that the interplay between these two features can yield a significant bias in the global characteristics inferred from the data. We present a general framework to quantify this bias, and derive an explicit corrective factor for a wide class of systems. Applying our analysis to a recent high-profile survey of conflict mortality in Iraq suggests a significant overestimate of deaths.
Physical approaches to DNA sequencing and detection
Creators: name: Zwolak, Michael
name: Di Ventra, Massimiliano
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: With the continued improvement of sequencing technologies, the prospect of genome-based medicine is now at the forefront of scientific research. To realize this potential, however, we need a revolutionary sequencing method for the cost-effective and rapid interrogation of individual genomes. This capability is likely to be provided by a physical approach to probing DNA at the single nucleotide level. This is in sharp contrast to current techniques and instruments which probe, through chemical elongation, electrophoresis, and optical detection, length differences and terminating bases of strands of DNA. In this Colloquium we review several physical approaches to DNA detection that have the potential to deliver fast and low-cost sequencing. Center-fold to these approaches is the concept of nanochannels or nanopores which allow for the spatial confinement of DNA molecules. In addition to their possible impact in medicine and biology, the methods offer ideal test beds to study open scientific issues and challenges in the relatively unexplored area at the interface between solids, liquids, and biomolecules at the nanometer length scale. We emphasize the physics behind these methods and ideas, critically describe their advantages and drawbacks, and discuss future research opportunities in this field.
description: 26 pages, 22 figures
The pion's electromagnetic form factor at small momentum transfer in full lattice QCD
Creators: name: Boyle, P. A.
name: Flynn, J. M.
name: Juttner, A.
name: Kelly, C.
name: de Lima, H. Pedroso
name: Maynard, C. M.
name: Sachrajda, C. T.
name: Zanotti, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the electromagnetic form factor of a "pion" with mass m_pi=330MeV at low values of Q^2\equiv -q^2, where q is the momentum transfer. The computations are performed in a lattice simulation using an ensemble of the RBC/UKQCD collaboration's gauge configurations with Domain Wall Fermions and the Iwasaki gauge action with an inverse lattice spacing of 1.73(3)GeV. In order to be able to reach low momentum transfers we use partially twisted boundary conditions using the techniques we have developed and tested earlier. For the pion of mass 330MeV we find a charge radius given by _{330MeV}=0.354(31)fm^2 which, using NLO SU(2) chiral perturbation theory, extrapolates to a value of =0.418(31)fm^2 for a physical pion, in agreement with the experimentally determined result. We confirm that there is a significant reduction in computational cost when using propagators computed from a single time-slice stochastic source compared to using those with a point source; for m_pi=330MeV and volume (2.74fm)^3 we find the reduction is approximately a factor of 12.
description: 20 pages, 3 figures
Towards high-throughput superconductor discovery via machine learning
Creators: name: Xie, Stephen R.
name: Quan, Y.
name: Hire, Ajinkya
name: Fanfarillo, Laura
name: Stewart, G. R.
name: Hamlin, J. J.
name: Hennig, R. G.
name: Hirschfeld, P. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Even though superconductivity has been studied intensively for more than a century, the vast majority of superconductivity research today is carried out in nearly the same manner as decades ago. That is, each study tends to focus on only a single material or small subset of materials, and discoveries are made more or less serendipitously. Recent increases in computing power, novel machine learning algorithms, and improved experimental capabilities offer new opportunities to revolutionize superconductor discovery. These will enable the rapid prediction of structures and properties of novel materials in an automated, high-throughput fashion and the efficient experimental testing of these predictions. Here, we review efforts to use machine learning to attain this goal.
description: Submitted to J. Phys. Cond. Matt. as part of a ROADMAP article on "Designing Room Temperature Superconductors"
КОЛЮЧЕЛИСТНИК, ТУРКЕСТАНСКИЙ МЫЛЬНЫЙ КОРЕНЬ: ХИМИЧЕСКИЙ СОСТАВ И ПРИМЕНЕНИЕ В МЕДИЦИНЕ
Creators: name: Gulomova, N.SH.
Publisher: name: Zenodo
Year: 2023

description: В настоящее время сапонины корней колючелистника качимовидного могут быть использованы в пищевой промышленности в качестве природных эмульгаторов при производстве различных типов майонезной продукции, а также активных пенообразователей при производстве халвы и щипучих напитков, кондитерских кремов, муссов и мороженного. В то же время, создание культивируемой сырьевой базы колючелистника качимовидного сопряжено с немалыми трудностями, невозобновляемость подземных органов и их малодоступность для обширных исследований наладывают определенные ограничения и обуславливают необходимость проведения работ по поиску альтернативных источников.
George-Dan Hânceanu, Angela Simalcsik, Robert Daniel Simalcsik, Vasile Diaconu, Lucian Munteanu, Otilia Mircea, Viorica Vasilache, Arhiepiscopia Romanului și Bacăului. Cimitirul medieval și complexele laice din perimetrul sud-vestic al incintei bisericești: rezultatele cercetării preventive din anul 2015, Brăila, Editura Istros a Muzeului Brăilei "Carol I", Piatra Neamț, Editura "Constantin Matasă", 2021, 786 p. ISBN: 978-606-654-434-4; ISBN: 978-973-7777-60-7
Creators: name: Bacumenco, Ludmila
Publisher: name: Zenodo
Year: 2021

description: Seria lucrărilor consacrate evoluției istorice a Romanului, unul dintre cele mai vechi orașe ale Moldovei medievale, a fost completată recent cu un nou volum, care cuprinde rezultatele cercetării arheologice preventive efectuate în perimetrul cimitirului din incinta Arhiepiscopiei Romanului și Bacăului în anul 2015, având drept autor principal pe colegul George-Dan Hânceanu de la Muzeul de Istorie din Roman.
An Efficient Application of Neuroevolution for Competitive Multiagent Learning
Creators: name: Menon, Unnikrishnan Rajendran
name: Menon, Anirudh Rajiv
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Multiagent Systems (cs.MA)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Multiagent systems provide an ideal environment for the evaluation and analysis of real-world problems using reinforcement learning algorithms. Most traditional approaches to multiagent learning are affected by long training periods as well as high computational complexity. NEAT (NeuroEvolution of Augmenting Topologies) is a popular evolutionary strategy used to obtain the best performing neural network architecture often used to tackle optimization problems in the field of artificial intelligence. This paper utilizes the NEAT algorithm to achieve competitive multiagent learning on a modified pong game environment in an efficient manner. The competing agents abide by different rules while having similar observation space parameters. The proposed algorithm utilizes this property of the environment to define a singular neuroevolutionary procedure that obtains the optimal policy for all the agents. The compiled results indicate that the proposed implementation achieves ideal behaviour in a very short training period when compared to existing multiagent reinforcement learning models.
description: 13 pages, 7 figures, 2 tables
Third Level Trigger for the Fluorescence Telescopes of the Pierre Auger Observatory
Creators: name: Schmidt, A.
name: Asch, T.
name: Gemmeke, H.
name: Kleifges, M.
name: Mathes, H. -J.
name: Menshikov, A.
name: Schüssler, F.
name: Tcherniakhovski, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The trigger system for the Auger fluorescence telescopes is implemented in hard- and software for an efficient selection of fluorescence light tracks induced by high-energy extensive air showers. The algorithm of the third stage uses the multiplicity signal of the hardware for fast rejection of lightning events with above 99% efficiency. In a second step direct muon hits in the camera and random triggers are rejected by analyzing the space-time correlation of the pixels. The trigger algorithm was tested with measured and simulated showers and implemented in the electronics of the fluorescence telescopes. A comparison to a prototype trigger without multiplicity shows the superiority of this approach, e.g. the false rejection rate is a factor 10 lower.
description: 8 pages, 7 figures, to be published in NIM A; 1 typo corrected
Hochschild cohomology and Atiyah classes
Creators: name: Calaque, Damien
name: Bergh, Michel Van den
Publisher: name: arXiv
Year: 2007
Subjects: subject: K-Theory and Homology (math.KT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: In this paper we prove that on a smooth algebraic variety the HKR-morphism twisted by the square root of the Todd genus gives an isomorphism between the sheaf of poly-vector fields and the sheaf of poly-differential operators, both considered as derived Gerstenhaber algebras. In particular we obtain an isomorphism between Hochschild cohomology and the cohomology of poly-vector fields which is compatible with the Lie bracket and the cupproduct. The latter compatibility is an unpublished result by Kontsevich. Our proof is set in the framework of Lie algebroids and so applies without modification in much more general settings as well.
description: Reference to work of Cattaneo, Felder and Willwacher added
Surface charge accumulation on spacers under switching impulses in sulphur hexafluoride gas
Creators: name: Cherukupalli, Sudhakar Ellapragada
Publisher: name: University of British Columbia
Year: 2010

description: Metal encapsulation with compressed sulphur hexafluoride gas insulation has reduced the size of power substations and improved their reliability. Due to the superior insulating properties of this gas, its application in Gas Insulated Transmission lines (GITL) and Gas Insulated Substations (GIS) is increasing. Such systems invariably require solid support spacers for supporting high voltage conductors and for compartmentalizing sections of the systems. It has been found that, although the dielectric strength of sulphur hexafluoride is high compared to other gases, in the presence of a solid spacer, the dielectric integrity of the system is impaired. For DC GIS and GITL, free of any particulate contamination, anomalous flashover during a polarity reversal of the applied voltage has been attributed to charge accumulation on the spacer surface. The present work examines the effect of switching impulse voltages on the charge accumulation on support spacers in sulphur hexafluoride gas and the effect of AC precharging on impulse flashover. The charge accumulation on the spacer has been measured using a capacitive probe. A three-dimensional surface charge simulation technique has been developed to convert the probe potential measurements to an equivalent charge distribution. Electric field variation on the spacer surface due to this computed charge can be then obtained with this program. The results indicate that spacers acquire charges even under impulse voltage application in non-uniform field gaps. These charges affect the prebreakdown phenomenon and the breakdown behavior of spacer gaps. Under AC voltages, spacers in uniform fields do not acquire charges as has been reported by previous investigators. Under non-uniform field conditions however, AC precharging of spacers does affect the impulse flashover. The variation however, seems to fall within the statistical scatter of pure impulse flashover.
Alexandru Szentmiklosi, Așezările culturii Cruceni-Belegiš în Banat. (Editor: Ioan Bejinariu), Editura Mega, Cluj-Napoca 2021, 410 p. text și 193 planșe, ISBN 978-606-020-364-3
Creators: name: Bejinariu, Ioan
Publisher: name: Zenodo
Year: 2021

description: Volumul reprezintă teza de doctorat a regretatului nostru coleg Alexandru Szentmiklosi (1971-2019) susținută la Universitatea „1 Decembrie 1918” din Alba Iulia, inițial sub coordonarea prof. univ. dr. Iuliu Paul, iar după trecerea acestuia în neființă, sub coordonarea prof. univ. dr. Florin Drașoveanu. Decesul prematur al colegului Szentmiklosi, arheolog la Muzeul Național al Banatului din Timișoara, a făcut ca volumul să apară postum, într-o formă aproape neschimbată față de momentul 2009, anul susținerii publice a tezei.
Spectroscopy of the local density-of-states in nanowires using integrated quantum dots
Creators: name: Thomas, Frederick S.
name: Nilsson, Malin
name: Ciaccia, Carlo
name: Jünger, Christian
name: Rossi, Francesca
name: Zannier, Valentina
name: Sorba, Lucia
name: Baumgartner, Andreas
name: Schönenberger, Christian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In quantum dot (QD) electron transport experiments additional features can appear in the differential conductance $dI/dV$ that do not originate from discrete states in the QD, but rather from a modulation of the density-of-states (DOS) in the leads. These features are particularly pronounced when the leads are strongly confined low dimensional systems, such as in a nanowire (NW) where transport is one-dimensional and quasi-zero dimensional lead-states can emerge. In this paper we study such lead-states in InAs NWs. We use a QD integrated directly into the NW during the epitaxial growth as an energetically and spatially well-defined tunnel probe to perform $dI/dV$ spectroscopy of discrete bound states in the `left' and `right' NW lead segments. By tuning a sidegate in close proximity of one lead segment, we can distinguish transport features related to the modulation in the lead DOS and to excited states in the QD. We implement a non-interacting capacitance model and derive expressions for the slopes of QD and lead resonances that appear in two-dimensional plots of $dI/dV$ as a function of source-drain bias and gate voltage in terms of the different lever arms determined by the capacitive couplings. We discuss how the interplay between the lever arms affect the slopes. We verify our model by numerically calculating the $dI/dV$ using a resonant tunneling model with three non-interacting quantum dots in series. Finally, we used the model to describe the measured $dI/dV$ spectra and extract quantitatively the tunnel couplings of the lead segments. Our results constitute an important step towards a quantitative understanding of normal and superconducting subgap states in hybrid NW devices.
description: 11 pages, 4 figures
Additional file 1 of A novel peptide encoded by N6-methyladenosine modified circMAP3K4 prevents apoptosis in hepatocellular carcinoma
Creators: name: Duan, Jin-Ling
name: Chen, Wei
name: Xie, Juan-Juan
name: Zhang, Mao-Lei
name: Nie, Run-Cong
name: Liang, Hu
name: Mei, Jie
name: Han, Kai
name: Xiang, Zhi-Cheng
name: Wang, Feng-Wei
name: Teng, Kai
name: Chen, Ri-Xin
name: Deng, Min-Hua
name: Yin, Yi-Xin
name: Zhang, Nu
name: Xie, Dan
name: Cai, Mu-Yan
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Molecular Biology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Cancer
Virology

description: Additional file 1.
Higgs-strahlung boson production in the presence of a circularly polarized laser field
Creators: name: Ouhammou, M.
name: Ouali, M.
name: Taj, S.
name: Manaut, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the framework of the electroweak standard model, we investigated, in the center of mass frame, the Higgs boson production in the presence of an intense laser field via ${e}^{+} {e}^{-}$ annihilation $({e}^{+} {e}^{-}\rightarrow ZH)$. By comparing our results with those obtained by Djouadi \cite{1} for laser-free process, we show that the circularly polarized laser field affects significantly the $s$-channel Higgs boson production. We find that for a given number of exchanged photons, laser field strength and frequency, the total cross section decreases by several orders of magnitude. These effects of laser field on cross section are found to be consistent with what was found for muon pair production via QED process in the presence of a circularly polarized laser field \cite{2}.
description: 17 pages, 11 figures
Toward an AdS/cold atoms correspondence: a geometric realization of the Schroedinger symmetry
Creators: name: Son, D. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss a realization of the nonrelativistic conformal group (the Schroedinger group) as the symmetry of a spacetime. We write down a toy model in which this geometry is a solution to field equations. We discuss various issues related to nonrelativistic holography. In particular, we argue that free fermions and fermions at unitarity correspond to the same bulk theory with different choices for the near-boundary asymptotics corresponding to the source and the expectation value of one operator. We describe an extended version of nonrelativistic general coordinate invariance which is realized holographically.
description: 14 pages; v2: typos fixed, published version
Current induced resistance change of magnetic tunnel junctions with ultra-thin MgO tunnel barriers
Creators: name: Krzysteczko, Patryk
name: Kou, Xinli
name: Rott, Karsten
name: Thomas, Andy
name: Reiss, Günter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ultra-thin magnetic tunnel junctions with low resistive MgO tunnel barriers are prepared to examine their stability under large current stress. The devices show magnetoresistance ratios of up to 110 % and an area resistance product of down to 4.4 ohm micrometer squared. If a large current is applied, a reversible resistance change is observed, which can be attributed to two different processes during stressing and one relaxation process afterwards. Here, we analyze the time dependence of the resistance and use a simple model to explain the observed behavior. The explanation is further supported by numerical fits to the data in order to quantify the timescales of the involved phenomena.
POTENTIAL INTERACTIONS OF DIETARY CATION-ANION DIFFERENCE AND MONENSIN WITH RESPECT TO FEED EFFICIENCY IN LACTATING DAIRY CATTLE
Creators: name: Weidman, Amy
Publisher: name: Digital Repository at the University of Maryland
Year: 2014
Subjects: subject: Animal sciences

description: The ionophore monensin improves feed efficiency (FE) by increasing sodium uptake in rumen bacteria, which alters rumen fermentation.  Dietary cation-anion difference (DCAD) represents the balance between the dietary strong cations (Na and K) and strong anion (Cl) and increased DCAD also improves FE.  This study tested the interaction of monensin and DCAD using sodium sesquicarbonate and potassium carbonate as the strong ion sources in 18 early to mid-lactation Holstein cows. Monensin, DCAD and the monensin-DCAD interaction had no effect on dry matter intake, milk production and milk composition, and FE.  However, addition of dietary sodium and potassium increased rumen concentrations of those minerals and increased rumen acetate and decreased rumen propionate concentrations.  The effect of sodium on rumen acetate and total VFA concentrations was more pronounced in the monensin diets suggesting an interaction between monensin and DCAD on rumen fermentation.
A visualization approach for discovering colocation patterns
Creators: name: Zhou, Mengjie
name: Ai, Tinghua
name: Wu, Chao
name: Gu, Yuli
name: Wang, Na
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Computational Biology

description: Colocation mining is one of the major spatial data mining tasks. When discovering colocation patterns, spatial statistics or data mining approaches are commonly used. Colocation mining results are typically presented in a textual form and do not provide any spatial information; thus, the results lack an intuitive approach to obtain cognition of colocation rules. Here, we propose a visualization approach to discover colocation patterns for two independent point distributions and generate visual results. This approach makes use of the ability of human color perception. For two geographic features, our approach first generates density surfaces of the input features and then visualizes the density surfaces using a red or green light with different intensities. Then, based on the law of additive color mixing, our approach mixes the colors of the two density surfaces to generate a colocation rule map. The visualization approach can also provide local details of colocation and be used for local colocation analysis. Users can detect colocation patterns and their distribution from the colocation rule maps. We use both synthetic data and real data to test the performance of our approach.
Know Moore About: Research Data Management
Creators: name: Sewell, Claire
name: Theobald, Amy
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: data management
research data
research support

description: Data management is a vital part of all research projects. Done well it can save time and stress as well as making the research process more efficient. This session will introduce participants to the basic elements of managing the information they use and create as part of their projects including how information can be backed up, stored and shared.
Bernstein polynomials, Bergman kernels and toric Kähler varieties
Creators: name: Zelditch, Steve
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: It does not seem to have been observed previously that the classical Bernstein polynomials $B_N(f)(x)$ are closely related to the Bergman-Szego kernels $Π_N$ for the Fubini-Study metric on $\CP^1$: $B_N(f)(x)$ is the Berezin symbol of the Toeplitz operator $Π_N f(N^{-1} D_θ)$. The relation suggests a generalization of Bernstein polynomials to any toric Kahler variety and Delzant polytope $P$. When $f$ is smooth, $B_N(f)(x)$ admits a complete asymptotic expansion. Integrating it over $P$ gives a complete asymptotic expansion for Dedekind-Riemann sums of smooth functions over lattice points in $N P$ related to Euler-MacLaurin sum formulae of Guillemin-Sternberg and others.
description: Fixed some more typos and added some detail
Cervical Remodeling in the Postpartum Period
Creators: name: Villegas-Downs, Michelle
Publisher: name: University of Illinois at Chicago
Year: 2024

description: Objective: Women with a history of spontaneous preterm birth (sPTB) face an increased risk of recurrence. Yet, the factors contributing to the increased risk are unknown, hampering the development of targeted interventions. Noninvasive Quantitative Ultrasound (QUS) has been validated in the characterization of cervical tissue and has the potential to provide information about postpartum cervical remodeling. The objective of this study was to determine the postpartum cervical remodeling trajectories of women over 12 months post-delivery and to determine whether there were differences between women who delivered full-term and spontaneous preterm that were sensitive to QUS biomarkers.
Methods: Data were collected prospectively from 55 women: 41 who delivered full-term and 14 who delivered spontaneously preterm at 6 weeks, 3, 6, 9, and 12 months (±2 weeks) postpartum. Data from QUS biomarkers: Attenuation Coefficient; Backscatter Coefficient; Shear Wave Speed; and Lizzi-Feleppa Slope, Intercept, and Midband were analyzed from the acquired radiofrequency data using a Siemens S2000 ultrasound system with a transvaginal MC 9-4 MHz probe. The biomarkers were analyzed using descriptive statistics and linear mixed-effects models.
Results: QUS biomarkers, Backscatter Coefficient, and Lizzi-Feleppa Intercept showed significant differences during the year after delivery between women who had a full-term birth and sPTB (p<0.05), suggesting that there are differences in the cervical remodeling trajectories between the two groups. All QUS biomarkers demonstrated significant variations between the full-term birth and sPTB groups over time (p<0.05), indicating ongoing cervical remodeling for both groups during the 12-month postpartum period.
Conclusion: QUS biomarkers identified cervical microstructure differences and trajectories in the year after delivery between women who delivered full-term and spontaneous preterm.
UX Research on Conversational Human-AI Interaction: A Literature Review of the ACM Digital Library
Creators: name: Zheng, Qingxiao
name: Tang, Yiliu
name: Liu, Yiren
name: Liu, Weizi
name: Huang, Yun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Early conversational agents (CAs) focused on dyadic human-AI interaction between humans and the CAs, followed by the increasing popularity of polyadic human-AI interaction, in which CAs are designed to mediate human-human interactions. CAs for polyadic interactions are unique because they encompass hybrid social interactions, i.e., human-CA, human-to-human, and human-to-group behaviors. However, research on polyadic CAs is scattered across different fields, making it challenging to identify, compare, and accumulate existing knowledge. To promote the future design of CA systems, we conducted a literature review of ACM publications and identified a set of works that conducted UX (user experience) research. We qualitatively synthesized the effects of polyadic CAs into four aspects of human-human interactions, i.e., communication, engagement, connection, and relationship maintenance. Through a mixed-method analysis of the selected polyadic and dyadic CA studies, we developed a suite of evaluation measurements on the effects. Our findings show that designing with social boundaries, such as privacy, disclosure, and identification, is crucial for ethical polyadic CAs. Future research should also advance usability testing methods and trust-building guidelines for conversational AI.
Large Scale B-Field in Stationary Accretion Disks
Creators: name: Bisnovatyi-Kogan, G. S.
name: Lovelace, R. V. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We reconsider the problem of the formation of a large-scale magnetic field in the accretion disks around black holes. In contrast with previous work we take into account the nonuniform vertical structure of the disk. The high electrical conductivity of the outer layers of the disk prevents the outward diffusion of the magnetic field. This implies a stationary state with a strong magnetic field in the inner parts of the accretion disk close to the black hole.
description: 5 pages, 2 figures
Low-rank optimization for semidefinite convex problems
Creators: name: Journée, M.
name: Bach, F.
name: Absil, P. -A.
name: Sepulchre, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 46N10, 65K05, 65J99

description: We propose an algorithm for solving nonlinear convex programs defined in terms of a symmetric positive semidefinite matrix variable $X$. This algorithm rests on the factorization $X=Y Y^T$, where the number of columns of Y fixes the rank of $X$. It is thus very effective for solving programs that have a low rank solution. The factorization $X=Y Y^T$ evokes a reformulation of the original problem as an optimization on a particular quotient manifold. The present paper discusses the geometry of that manifold and derives a second order optimization method. It furthermore provides some conditions on the rank of the factorization to ensure equivalence with the original problem. The efficiency of the proposed algorithm is illustrated on two applications: the maximal cut of a graph and the sparse principal component analysis problem.
description: submitted
Ab initio investigation of impurity ferromagnetism in the Pd1-xFex alloys: concentration and position dependence
Creators: name: Piyanzina, Irina
name: Gumarov, Amir
name: Yusupov, Roman
name: Khaibullin, Rustem
name: Tagirov, Lenar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present the ab initio results of the structural and magnetic properties of the Pd host matrix implanted with Fe solute atoms at various concentrations. By means of density functional theory we confirm that iron impurities are able to initialize significant magnetization of the Pd atoms, when the impurity consentation exceeds 3 at.%. Besides, we demonstrate that the imposed magnetization depends on impurity positions in the host matrix, in particular, there is a maximum of magnetization for a uniform distribution of the iron impurity.
Data and code for the study: "Responsibility of major emitters for country-level warming and extreme hot years"
Creators: name: Beusch, Lea
name: Nauels, Alexander
name: Gudmundsson, Lukas
name: Gütschow, Johannes
name: Schleussner, Carl-Friedrich
name: Seneviratne, Sonia I.
Publisher: name: Zenodo
Year: 2021

description: Data (MAGICC output) and code (processing python scripts and plotting ipython notebook) for Beusch et al. (2021, Commun. Earth Environ.).
La IA en la investigación académica: Un análisis de sus limitaciones y posibilidades
Creators: name: Sánchez Santamaría, José
Publisher: name: Zenodo
Year: 2025

description: La charla inspiradora en el marco de Seminarios y Charlas inspiradoras de la UNESCO:  “La IA en la investigación académica: Un análisis de sus limitaciones y posibilidades”  tiene como objetivo formar a los investigadores e investigadoras en el uso responsable y crítico de la inteligencia artificial (IA) aplicada a los procesos de investigación. Se abordarán las principales herramientas disponibles (como Litmaps, Elicit, Consensus o ResearchRabbit), sus aplicaciones y sus límites, destacando tanto las ventajas —mayor eficiencia, automatización o precisión— como los riesgos asociados —dependencia tecnológica, sesgos en los datos o falta de transparencia en los modelos. El seminario también fomentará la reflexión ética sobre el impacto social del uso de la IA en la investigación y las responsabilidades de quienes la integran en sus trabajos. A través de casos prácticos y debates, se promoverá la toma de decisiones éticas y la transparencia en los procesos, con el fin de garantizar investigaciones rigurosas, fiables y comprometidas con los principios éticos del ámbito académico.

contacto: Jose.Santamaria@uclm.es
TEACHING LANGUAGE ASPECTS TO PRE-TEENS AND ADOLESCENTS
Creators: name: Ashurova, Khurshida
Publisher: name: Zenodo
Year: 2023

description: This article examines various aspects of language, such as phonetics, morphology and phonology for teaching two groups of learners, to be specific, pre-teens and adolescents. Moreover, article shows a clear comparison of teaching these students since different approaches and methods should be applied based on students’ age and level. Challenges which are faced while preparing materials takes an indispensable role for covering in this research paper.
Hierarchical growing grid networks for skeleton based action recognition
Creators: name: Gharaee, Zahra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, a novel cognitive architecture for action recognition is developed by applying layers of growing grid neural networks.Using these layers makes the system capable of automatically arranging its representational structure. In addition to the expansion of the neural map during the growth phase, the system is provided with a prior knowledge of the input space, which increases the processing speed of the learning phase. Apart from two layers of growing grid networks the architecture is composed of a preprocessing layer, an ordered vector representation layer and a one-layer supervised neural network. These layers are designed to solve the action recognition problem. The first-layer growing grid receives the input data of human actions and the neural map generates an action pattern vector representing each action sequence by connecting the elicited activation of the trained map. The pattern vectors are then sent to the ordered vector representation layer to build the time-invariant input vectors of key activations for the second-layer growing grid. The second-layer growing grid categorizes the input vectors to the corresponding action clusters/sub-clusters and finally the one-layer supervised neural network labels the shaped clusters with action labels. Three experiments using different datasets of actions show that the system is capable of learning to categorize the actions quickly and efficiently. The performance of the growing grid architecture is com-pared with the results from a system based on Self-Organizing Maps, showing that the growing grid architecture performs significantly superior on the action recognition tasks.
Instability of the massive Klein-Gordon field on the Kerr spacetime
Creators: name: Dolan, Sam R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the instability of the massive scalar field in the vicinity of a rotating black hole. The instability arises from amplification caused by the classical superradiance effect. The instability affects bound states: solutions to the massive Klein-Gordon equation which tend to zero at infinity. We calculate the spectrum of bound state frequencies on the Kerr background using a continued fraction method, adapted from studies of quasinormal modes. We demonstrate that the instability is most significant for the $l = 1$, $m = 1$ state, for $M μ\lesssim 0.5$. For a fast rotating hole ($a = 0.99$) we find a maximum growth rate of $τ^{-1} \approx 1.5 \times 10^{-7} (GM/c^3)^{-1}$, at $M μ\approx 0.42$. The physical implications are discussed.
description: Added references. 27 pages, 7 figures
Limits and C*-algebras of low rank or dimension
Creators: name: Brown, Lawrence G.
name: Pedersen, Gert K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L05 (primary) 46M20 (secondary)

description: We explore various limit constructions for C*-algebras, such as composition series and inverse limits, in relation to the notions of real rank, stable rank, and extremal richness. We also consider extensions and pullbacks. We identify some conditions under which the constructions preserve low rank for the C*-algebras or their multiplier algebras. We also discuss the version of topological dimension theory appropriate for primitive ideal spaces of C*-algebras and provide an analogue for rank of the countable sum theorem of dimension theory. As an illustration of how the main results can be applied, we show that a CCR algebra has stable rank one if and only if it has topological dimension zero or one, and we characterize those sigma-unital CCR algebras whose multiplier algebras have stable rank one or extremal richness. (The real rank zero case was already known.)
description: This is the second-to-last of our joint papers and will appear in the Journal of Operator Theory
Spin, Orbital and Charge Order at the Interface between Correlated Oxides
Creators: name: Jackeli, G.
name: Khaliullin, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The collective behavior of correlated electrons in the VO$_2-$interface layer of LaVO$_3$/SrTiO$_3$ heterostructure is studied within a quarter-filled $t_{2g}$-orbital Hubbard model on a square lattice. We argue that the ground state is ferromagnetic driven by the double exchange mechanism, and is orbitally and charge ordered due to a confined geometry and electron correlations. The orbital and charge density waves open gaps on the entire Fermi surfaces of all orbitals. The theory explains the observed insulating behavior of the $p$-type interface between LaVO$_3$ and SrTiO$_3$.
description: 4 pages, 5 figures; revised, to appear in Phys. Rev. Lett