cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photonics of Time-Varying Media
Creators: name: Galiffi, Emanuele
name: Tirole, Romain
name: Yin, Shixiong
name: Li, Huanan
name: Vezzoli, Stefano
name: Huidobro, Paloma A.
name: Silveirinha, Mário G.
name: Sapienza, Riccardo
name: Alù, Andrea
name: Pendry, J. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Time-varying media have recently emerged as a new paradigm for wave manipulation, thanks to thesynergy between the discovery of novel, highly nonlinear materials, such as epsilon-near-zero materials, and the questfor novel wave applications, such as magnet-free nonreciprocity, multi-mode light shaping, and ultrafast switching. Inthis review we provide a comprehensive discussion of the recent progress achieved with photonic metamaterials whoseproperties stem from their modulation in time. We review the basic concepts underpinning temporal switching and itsrelation with spatial scattering, and deploy the resulting insight to review photonic time-crystals and their emergentresearch avenues such as topological and non-Hermitian physics. We then extend our discussion to account for spa-tiotemporal modulation and its applications to nonreciprocity, synthetic motion, giant anisotropy, amplification andother effects. Finally, we conclude with a review of the most attractive experimental avenues recently demonstrated,and provide a few perspectives on emerging trends for future implementations of time-modulation in photonics.
Detailed information on de novo assemblies of RNAseq data and structural annotation of genome assemblies from Inference of DNA methylation patterns in molluscs
Creators: name: Maenner, Lisa
name: Schell, Tilman
name: Provataris, Panagiotis
name: Haase, Martin
name: Greve, Carola
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: 60408 Genomics

description: Detailed information on de novo assemblies of RNAseq data and structural annotation of genome assemblies
Using coverage-based rarefaction to infer non-random species distributions
Creators: name: Engel, Thore
name: Blowes, Shane A.
name: McGlinn, Daniel J.
name: May, Felix
name: Gotelli, Nicholas J.
name: McGill, Brian J.
name: Chase, Jonathan M.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: β-deviation
subject: β-diversity
subject: coverage
subject: null models
subject: rarefaction
subject: sample completeness
subject: spatial aggregation
subject: species abundance distribution
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Understanding how species are non-randomly distributed in space and how the resulting spatial structure responds to ecological, biogeographic, and anthropogenic drivers is a critical piece of the biodiversity puzzle. However, most metrics that quantify the spatial structure of diversity (i.e., community differentiation), such as Whittaker’s β-diversity, depend on sampling effort and are influenced by species pool size, species abundance distributions, and numbers of individuals. Null models are useful for identifying the degree of differentiation among communities due to spatial structuring relative to that expected from sampling effects, but do not accommodate the influence of sample completeness (i.e., the proportion of the species pool in a given sample). Here, we develop an approach that makes use of individual- and coverage-based rarefaction and extrapolation, to derive a metric, βC, which captures changes in intraspecific aggregation independently of changes in the species pool size. We illustrate the metric using spatially explicit simulations and two case studies: (1) a re-analysis of the “Gentry” plot data set consisting of small forest plots spanning a latitudinal gradient from North to South America and (2) comparing a large plot in high diversity tropical forests of Barro Colorado Island, Panama, with a plot in a lower diversity temperate forest in Harvard Forest, Massachusetts, USA. We find no evidence for systematic changes in spatial structure with latitude in these data sets. As it is rooted in biodiversity sampling theory and explicitly controls for sample completeness, our approach represents an important advance over existing null models for spatial aggregation. Potential applications range from better descriptors of biogeographic diversity patterns to the consolidation of local and regional diversity trends in the current biodiversity crisis.
Proxemics and Social Interactions in an Instrumented Virtual Reality Workshop
Creators: name: Williamson, Julie
name: Li, Jie
name: Vinayagamoorthy, Vinoba
name: Shamma, David A.
name: Cesar, Pablo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.m; J.4

description: Virtual environments (VEs) can create collaborative and social spaces, which are increasingly important in the face of remote work and travel reduction. Recent advances, such as more open and widely available platforms, create new possibilities to observe and analyse interaction in VEs. Using a custom instrumented build of Mozilla Hubs to measure position and orientation, we conducted an academic workshop to facilitate a range of typical workshop activities. We analysed social interactions during a keynote, small group breakouts, and informal networking/hallway conversations. Our mixed-methods approach combined environment logging, observations, and semi-structured interviews. The results demonstrate how small and large spaces influenced group formation, shared attention, and personal space, where smaller rooms facilitated more cohesive groups while larger rooms made small group formation challenging but personal space more flexible. Beyond our findings, we show how the combination of data and insights can fuel collaborative spaces' design and deliver more effective virtual workshops.
description: 20 pages, 9 figures, ACM CHI 2021
A quantum mechanical description of the experiment on the observation of gravitationally bound states
Creators: name: Westphal, Alexander
name: Abele, H.
name: Baessler, S.
name: Nesvizhevsky, V. V.
name: Petukhov, A. K.
name: Protasov, K. V.
name: Voronin, A. Yu.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quantum states in the Earth's gravitational field were observed, when ultra-cold neutrons fall under gravity. The experimental results can be described by the quantum mechanical scattering model as it is presented here. We also discuss other geometries of the experimental setup which correspond to the absence or the reversion of gravity. Since our quantum mechanical model describes, particularly, the experimentally realized situation of reversed gravity quantitatively, we can practically rule out alternative explanations of the quantum states in terms of pure confinement effects.
description: LaTeX, 10 pages, 4 figures, v2: references added
Muon capture in ²⁸Si
Creators: name: Moftah, Belal Ali
Publisher: name: University of British Columbia
Year: 2009

description: A measurement has been made of the angular correlation of the neutrino with a specific nuclear de-excitation γ-ray following exclusive muon capture on ²⁸Si , in order to determine the size of the induced-pseudoscalar coupling constant gp of the weak hadronic current. The correlation is observed via the Doppler-broadened line shape of the 1229 keV ²⁸ Al γ-ray, which is measured using a pair of Comptonsuppressed intrinsic Ge detectors. Significant background suppression is achieved through the use of a coincidence technique in which the 1229 keV γ-ray of interest is 'tagged' by the subsequent 942 keV γ-ray in the cascade, which is detected in an array of 24 NaI(Tl) scintillators. Through a detailed attention to the detectors' response functions as well as the use of background-subtracted spectra, the γ — v correlation coefficient a is found to be 0.360±0.059 i n good agreement with a recent measurement at Dubna. The result obtained yields the value of gp/gA = 0.0±3.2 when compared to the latest calculation of the γ — v angular correlation, suggesting a massive quenching of the induced-pseudoscalar coupling constant in 2 8 S i in comparison with the value expected for a free nucleon. However other available calculations give the values gp/gA — 5.3±2.0 and gp/gA = 4.2±2.5, but the model-dependence of these intriguing results has yet to be assessed fully. A measurement of the correlation coefficient a of the 2171 keV ( 1⁺ → 2⁺) γ-ray has solved the enigma of the unphysical result that was found by a previous experiment. In addition, the lifetime of the 2201 keV ²⁸ Al level has been measured
Variability and Fidelity Limits of Silicon Quantum Gates Due to Random Interface Charge Traps
Creators: name: Wu, Tong
name: Guo, Jing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Silicon offers an attractive material platform for hardware realization of quantum computing. In this study, a microscopic stochastic simulation method is developed to model the effect of random interface charge traps in silicon metal-oxide-semiconductor (MOS) quantum gates. The statistical results show that by using a fast two-qubit gate in isotopically purified silicon, the two-qubit silicon-based quantum gates have the fidelity >98% with a probability of 75% for the state-of-the-art MOS interface quality. By using a composite gate pulse, the fidelity can be further improved to >99.5% with the 75% probability. The variations between the quantum gate devices, however, are largely due to the small number of traps per device. The results highlight the importance of variability consideration due to random charge traps and potential to improve fidelity in silicon-based quantum computing.
description: 4 pages, 5 figures. IEEE Electron Device Letters (2020)
Determination of lipophilic and hydrophilic antioxidant activities in the crude extracts of ten varieties of tomatoes
Creators: name: Phitchan Sricharoen
name: Suchila Techawongstein
name: Saksit Chanthai
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2015
Subjects: ABTS,Antioxidant,DPPH,FRAP,tomato

description: 1, 20, KKU Research Journal
Optimization of Anthocyanin and Effects of Acidulants on Phytochemicals and Antioxidant activities in Purple Waxy Corn Cookies
Creators: name: Hathaigan Kokkaew
name: Nisakorn Srithanyarat
name: Theparit Pitirit
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2015
Subjects: Purple waxy corn,Response surface methodology,Phytochemical,Antioxidant

description: 1, 20, KKU Research Journal
Conservation, preparation and imaging of diverse ambers and their inclusions
Creators: name: Sadowski, Eva-Maria
name: Schmidt, Alexander R.
name: Seyfullah, Leyla J.
name: Solórzano-Kraemer, Mónica M.
name: Neumann, Christian
name: Perrichot, Vincent
name: Hamann, Christopher
name: Milke, Ralf
name: Nascimbene, Paul C.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Amber
subject: Amberization
subject: Fossil tree resins
subject: Deterioration
subject: Diagenesis
subject: Digitization
subject: Epoxy embedding
subject: Museum collections
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: Amber, a natural polymer, is fossil tree resin derived from diverse botanical sources with varying chemical compositions. As such, all amber is susceptible to the effects of light, temperature, relative humidity, and oxygen, as well as exposure to certain chemicals, and will deteriorate over time in collections if left unprotected. Here we review approaches for the conservation, preparation, and imaging of amber specimens and their inclusions, and address indications and causes of amber degradation, as well as recommendations for a suitable storage environment. We also provide updated preparation and embedding protocols, discuss several techniques for imaging inclusions, and address digitization efforts. A stable storage environment is essential to mitigate or avoid deterioration of amber, which often manifests as crazing, spalling, breaking and colour changes. Based on previous conservation studies of fossil resins, we generally recommend storage in a climate-monitored environment with a relative humidity of ca. 50%, 18 °C, and stress that light exposure must be kept to a minimum. For stabilization and anoxic sealing, amber specimens should ideally be embedded in an artificial epoxide resin (EpoTek 301-2 or similar is currently recommended). Amber should not be treated with or stored in vegetable or mineral oils (even for a short time for examination or photography), or come into contact with alcohol, disinfecting agents, hydrogen peroxide, or other destructive solvents or mixtures, since any of these materials can irreversibly damage the amber. Most photography of inclusions for research and digitization purposes can be successfully accomplished using light microscopy. Scanning electron microscopy (SEM) is sometimes used to uncover fine details, but is an invasive method. However, X-ray based methods (utilizing micro computed tomography, or micro-CT) are becoming more frequently used and increasingly indispensable in the examination of minute internal structures of inclusions, and to fully visualize important structures in opaque amber. Micro-CT makes it possible to digitize an inclusion three-dimensionally, and thus enables digital specimen ‘loans’. Light microscopal images are still widely used in the digitization of amber specimens and are an essential alternative to micro-CT imaging when resources or time are limited. Overall, due to the vulnerability of all fossil resins, we recommend that conservation of amber samples and their inclusions be prioritized.
Developing Motion Code Embedding for Action Recognition in Videos
Creators: name: Alibayev, Maxat
name: Paulius, David
name: Sun, Yu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this work, we propose a motion embedding strategy known as motion codes, which is a vectorized representation of motions based on a manipulation's salient mechanical attributes. These motion codes provide a robust motion representation, and they are obtained using a hierarchy of features called the motion taxonomy. We developed and trained a deep neural network model that combines visual and semantic features to identify the features found in our motion taxonomy to embed or annotate videos with motion codes. To demonstrate the potential of motion codes as features for machine learning tasks, we integrated the extracted features from the motion embedding model into the current state-of-the-art action recognition model. The obtained model achieved higher accuracy than the baseline model for the verb classification task on egocentric videos from the EPIC-KITCHENS dataset.
description: Accepted by 25th International Conference on Pattern Recognition (ICPR2020)
Alfie: An Interactive Robot with a Moral Compass
Creators: name: Turan, Cigdem
name: Schramowski, Patrick
name: Rothkopf, Constantin
name: Kersting, Kristian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This work introduces Alfie, an interactive robot that is capable of answering moral (deontological) questions of a user. The interaction of Alfie is designed in a way in which the user can offer an alternative answer when the user disagrees with the given answer so that Alfie can learn from its interactions. Alfie's answers are based on a sentence embedding model that uses state-of-the-art language models, e.g. Universal Sentence Encoder and BERT. Alfie is implemented on a Furhat Robot, which provides a customizable user interface to design a social robot.
One-dimensional nonrelativistic and relativistic Brownian motions: A microscopic collision model
Creators: name: Dunkel, Jörn
name: Hänggi, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study a simple microscopic model for the one-dimensional stochastic motion of a (non)relativistic Brownian particle, embedded into a heat bath consisting of (non)relativistic particles. The stationary momentum distributions are identified self-consistently (for both Brownian and heat bath particles) by means of two coupled integral criteria. The latter follow directly from the kinematic conservation laws for the microscopic collision processes, provided one additionally assumes probabilistic independence of the initial momenta. It is shown that, in the nonrelativistic case, the integral criteria do correctly identify the Maxwellian momentum distributions as stationary (invariant) solutions. Subsequently, we apply the same criteria to the relativistic case. Surprisingly, we find here that the stationary momentum distributions differ slightly from the standard Jüttner distribution by an additional prefactor proportional to the inverse relativistic kinetic energy.
description: version accepted for publication in Physica A; references added
Pseudospin, supersymmetry and the shell structure of atomic nuclei
Creators: name: Typel, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The evolution of single-particle energies with varying isospin asymmetry in the shell model is an important issue when predicting changes in the shell structure for exotic nuclei. In many cases pseudospin partner levels, that are almost degenerate in energy for stable nuclei, are relevant in extracting the size of the shell gaps. A breaking of the pseudospin symmetry can affect the size of these gaps and change the magic numbers accordingly. The strength of the pseudospin splitting is expected to depend in particular on isovector-dependent and tensor contributions to the effective nuclear interaction. A description employing supersymmetric quantum mechanics allows to derive a pseudospin symmetry breaking potential that is regular in contrast to the pseudospin-orbit potential in the conventional relativistic treatment. The derived perturbation potential provides a measure to quantify the symmetry breaking and it can be employed to improve mean-field calculations in order to better reproduce the experimentally observed shell evolution. General potentials with exact pseudospin symmetry are obtained that can be used in relativistic mean-field Hamiltonians.
description: 33 pages, 1 table, 6 figures, additional references, minor corrections, note added in proof, accepted for publication in Nuclear Physics A
Inhaled sphingosine has no adverse side effects in isolated ventilated and perfused pig lungs
Creators: name: Carstens, Henning
name: Kalka, Katharina
name: Verhaegh, Rabea
name: Schumacher, Fabian
name: Soddemann, Matthias
name: Wilker, Barbara
name: Keitsch, Simone
name: Sehl, Carolin
name: Kleuser, Burkhard
name: Wahlers, Thorsten
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Drug delivery
subject: Drug safety
subject: Infectious diseases
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::615 Pharmakologie, Therapeutik

description: Ex-vivo lung perfusion (EVLP) systems like XVIVO are more and more common in the setting of lung transplantation, since marginal donor-lungs can easily be subjected to a performance test or be treated with corticosteroids or antibiotics in high dose regimes. Donor lungs are frequently positive in bronchoalveolar lavage (BAL) bacterial cultures (46–89%) which leads to a donor-to-recipient transmission and after a higher risk of lung infection with reduced posttransplant outcome. We have previously shown that sphingosine very efficiently kills a variety of pathogens, including Pseudomonas aeruginosa, Staphylococcus aureus and epidermidis, Escherichia coli or Haemophilus influenzae. Thus, sphingosine could be a new treatment option with broadspectrum antiinfective potential, which may improve outcome after lung transplantation when administered prior to lung re-implantation. Here, we tested whether sphingosine has any adverse effects in the respiratory tract when applied into isolated ventilated and perfused lungs. A 4-h EVLP run using minipig lungs was performed. Functional parameters as well as perfusate measurements where obtained. Biopsies were obtained 30 min and 150 min after inhalation of sphingosine. Tissue samples were fixed in paraformaldehyde, embedded in paraffin and sectioned. Hemalaun, TUNEL as well as stainings with Cy3-coupled anti-sphingosine or anti-ceramide antibodies were implemented. We demonstrate that tube-inhalation of sphingosine into ex-vivo perfused and ventilated minipig lungs results in increased levels of sphingosine in the luminal membrane of bronchi and the trachea without morphological side effects up to very high doses of sphingosine. Sphingosine also did not affect functional lung performance. In summary, the inhalation of sphingosine results in an increase of sphingosine concentrations in the luminal plasma membrane of tracheal and bronchial epithelial cells. The inhalation has no local side effects in ex-vivo perfused and ventilated minipig lungs.
Lewis Superacidic Tellurenyl Cation-Induced Electrophilic Activation of an Inert Carborane
Creators: name: Hejda, Martin
name: Duvinage, Daniel
name: Lork, Enno
name: Lyčka, Antonín
name: Černošek, Zdeněk
name: Macháček, Jan
name: Makarov, Sergey
name: Ketkov, Sergey
name: Mebs, Stefan
name: Dostál, Libor
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: bond activation
subject: boron
subject: carboranes
subject: Lewis superacids
subject: tellurium
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: The aryltellurenyl cation [2-(tBuNCH)C6H4Te](+), a Lewis super acid, and the weakly coordinating carborane anion [CB11H12](-), an extremely weak Brønsted acid (pK(a)=131.0 in MeCN), form an isolable ion pair complex [2-(tBuNCH)C6H4Te][CB11H12], in which the Brønsted acidity (pK(a) 7.4 in MeCN) of the formally hydridic B-H bonds is dramatically increased by more than 120 orders of magnitude. The electrophilic activation of B-H bonds in the carborane moiety gives rise to a proton transfer from boron to nitrogen at slightly elevated temperatures, as rationalized by the isolation of a mixture of the zwitterionic isomers 12- and 7-[2-(tBuN{H}CH)C6H4Te(CB11H11)] in ratios ranging from 62 : 38 to 80 : 20.
In Memory of Al Cameron
Creators: name: Cowan, John J.
name: Truran, James W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Al Cameron, who died recently (October 3, 2005) at 80, was one of the giants in astrophysics. His insights were profound and his interests were wide-ranging. Originally trained as a nuclear physicist, he made major contributions in a number of fields, including nuclear reactions in stars, nucleosynthesis, the abundances of the elements in the Solar System, and the origin of the Solar System and the Moon. In 1957, Cameron and, independently, Burbidge, Burbidge, Fowler and Hoyle, wrote seminal papers on nuclear astrophysics. Most of our current ideas concerning element formation in stars have followed from those two pioneering and historical works. Al also made many contributions in the field of Solar System physics. Particularly noteworthy in this regard was Cameron's work on the formation of the Moon. Al was also a good friend and mentor of young people. Al Cameron will be missed by many in the community both for his scientific contributions and for his friendship.
description: 8 pages, 6 figures; To appear in the Proceedings of the International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX (2006)
Prediction of Double-Weyl Points in the Iron-Based Superconductor CaKFe$_4$As$_4$
Creators: name: Heinsdorf, N.
name: Christensen, M. H.
name: Iraola, M.
name: Zhang, S.
name: Yang, F.
name: Birol, T.
name: Batista, C. D.
name: Valentí, R.
name: Fernandes, R. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Employing a combination of symmetry analysis, low-energy modeling, and ab initio simulations, we predict the presence of magnetic-field-induced Weyl points close to the Fermi level in CaKFe$_4$As$_4$. Depending on the relative strengths of the magnetic field and of the spin-orbit coupling, the Weyl fermions can carry a topological charge of $\pm1$ or $\pm2$, making CaKFe$_4$As$_4$ a rare realization of a double-Weyl semimetal. We further predict experimental manifestations of these Weyl points, both in bulk properties, such as the anomalous Hall effect, and in surface properties, such as the emergence of prominent Fermi arcs. Because CaKFe$_4$As$_4$ displays unconventional fully-gapped superconductivity below 30 K, our findings open a novel route to investigate the interplay between superconductivity and Weyl fermions.
Using impedance engineering to design better ceramic composites for armour
Creators: name: Teo, Jia Hui
Publisher: name: Imperial College London
Year: 2020

description: This project seeks to investigate the viability of an alternative penetrator-defeating mechanism based on the use of impedance engineering to manage stress wave reflections. Stress waves, especially tensile waves, are problematic for ceramics as ceramics are an order of magnitude weak in tension than in compression. Theoretical calculations and simulations using Spectrum were used to validate the hypothesis. Fabrication of such impedance engineered laminates were shown to be achievable via traditional hot-pressing and robocasting. Fully dense (>99% TD) SiC with solid-state sintering additives were produced using robocasting with a flexural strength of 469 MPa (3PBT) and Young’s Modulus of approximately 430 MPa (ultrasonic techniques). Robocasting of SiC-B4C composites across the entire range of compositions was shown to be possible and pressureless sintered to high densities (>97% TD). Robocasting of ceramics and ceramic matrix composites based on SiC-B4C forms the bulk of the experimental work and is critical in ensuring that they can be deployed in armour applications. Characterisation of the fabricated ceramics showed mechanical properties comparable to other SiC/B4C materials in literature. While success in the ultrasonic characterisation of the interfaces was limited, a deeper understanding of the proposed mechanism was achieved.
Elicitation - switch-reference and time
Creators: name: Anonymous I
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with speaker MPR. Topics covered include switch-reference, attitude reports, the expression of time, and word order with complex nominals.
Quantum heaps, cops and heapy categories
Creators: name: Škoda, Zoran
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 20N10, 16A24

description: A heap is a structure with a ternary operation which is intuitively a group with forgotten unit element. Quantum heaps are associative algebras with a ternary cooperation which are to the Hopf algebras what heaps are to groups, and, in particular, the category of copointed quantum heaps is isomorphic to the category of Hopf algebras. There is an intermediate structure of a cop in monoidal category which is in the case of vector spaces to a quantum heap about what is a coalgebra to a Hopf algebra. The representations of Hopf algebras make a rigid monoidal category. Similarly the representations of quantum heaps make a kind of category with ternary products, which we call a heapy category.
description: 10 pages, an adaptation of an old 2001 preprint
Detecting synchronization of self-sustained oscillators by external driving with varying frequency
Creators: name: Hramov, Alexander E.
name: Koronovskii, Alexey A.
name: Ponomarenko, Vladimir I.
name: Prokhorov, Mikhail D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We propose a method for detecting the presence of synchronization of self-sustained oscillator by external driving with linearly varying frequency. The method is based on a continuous wavelet transform of the signals of self-sustained oscillator and external force and allows one to distinguish the case of true synchronization from the case of spurious synchronization caused by linear mixing of the signals. We apply the method to driven van der Pol oscillator and to experimental data of human heart rate variability and respiration.
description: 9 pages, 7 figures
Eutropis carinata
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Scincidae
Eutropis
Eutropis carinata

description: Eutropis carinata (Schneider 1801):
Commonly observed inside the park basking in open grassland and on rocky substrates. Observed at Kamini Daha, Bhata, Mahadev Khola, Halkhoria Daha, Ghode Masan, Ramauli-Pratappur, Sikaribasb Bhedaha Khola, and Darau Khola. This is one of the most commonly observed skinks in Nepal. However, earlier researchers did not report it from Parsa National Park (Fig. 14).
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 41, DOI: 10.5281/zenodo.11390169
Quantization and Entropy Coding in the Versatile Video Coding (VVC) Standard
Creators: name: Schwarz, Heiko
name: Coban, Muhammed
name: Karczewicz, Marta
name: Chuang, Tzu-Der
name: Bossen, Frank
name: Alshin, Alexander
name: Lainema, Jani
name: Helmrich, Christian R.
name: Wiegand, Thomas
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Versatile video coding (VVC)
subject: quantization
subject: entropy coding
subject: transform coefficient coding
subject: video coding
subject: 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::004 Datenverarbeitung; Informatik

description: The paper provides an overview of the quantization and entropy coding methods in the Versatile Video Coding (VVC) standard. Special focus is laid on techniques that improve coding efficiency relative to the methods included in the High Efficiency Video Coding (HEVC) standard: The inclusion of trellis-coded quantization, the advanced context modeling for entropy coding of transform coefficient levels, the arithmetic coding engine with multi-hypothesis probability estimation, and the joint coding of chroma residuals. Beside a description of the design concepts, the paper also discusses motivations and implementation aspects. The effectiveness of the quantization and entropy coding methods specified in VVC is validated by experimental results.
Securing the Human – Exploring Current Security Awareness among Employees and Finding Ways to Improve it in the Organizational Setting
Creators: name: Sebescen, Nina
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Information science
subject: Information technology
subject: BYOD
subject: Company-issues laptops
subject: Human factors
subject: Passwords
subject: Phishing
subject: Security

description: As organizational security breaches increase, it becomes imperative to understand the factors that lead to these breaches and take the necessary steps to minimize threats. Since employees are considered the weakest link in ensuring the security of corporate data, this paper evaluates various employee characteristics (demographic, company-specific, and skills-based) to understand their relationship with security knowledge and likelihood of becoming a security breach victim. This paper accounts for four different, yet intertwined, security risk areas: phishing, passwords, BYOD and laptop usage in the organizational setting. Findings from a survey of 250 employees at a medium-sized US consulting firm identify higher-risk employees and evaluate the relationship between employee characteristics, understanding of security policies, and security risks. Based on these findings and separate interviews with security experts, the study concludes with a set of recommendations for companies to improve organizational security and reduce risks caused by human factors in securing organizations’ endpoints.
Eutropis dissimilis
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Scincidae
Eutropis
Eutropis dissimilis

description: Eutropis dissimilis (Hallowell 1857):
Recorded from Amlekhgunj-Hattisar, Sikaribaas basking during winter. This species is rarely seen compared to its congenerics in Parsa National Park (Fig. 15).
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 41, DOI: 10.5281/zenodo.11390169
Towards identification of a non-abelian state: observation of a quarter of electron charge at $ν=5/2$ quantum Hall state
Creators: name: Dolev, M.
name: Heiblum, M.
name: Umansky, V.
name: Stern, Ady
name: Mahalu, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The fractional quantum Hall effect, where plateaus in the Hall resistance at values of coexist with zeros in the longitudinal resistance, results from electron correlations in two dimensions under a strong magnetic field. Current flows along the edges carried by charged excitations (quasi particles) whose charge is a fraction of the electron charge. While earlier research concentrated on odd denominator fractional values of $ν$, the observation of the even denominator $ν=5/2$ state sparked a vast interest. This state is conjectured to be characterized by quasiparticles of charge e/4, whose statistics is non-abelian. In other words, interchanging of two quasi particles may modify the state of the system to an orthogonal one, and does not just add a phase as in for fermions or bosons. As such, these quasiparticles may be useful for the construction of a topological quantum computer. Here we report data of shot noise generated by partitioning edge currents in the $ν=5/2$ state, consistent with the charge of the quasiparticle being e/4, and inconsistent with other potentially possible values, such as e/2 and e. While not proving the non-abelian nature of the $ν=5/2$ state, this observation is the first step toward a full understanding of these new fractional charges.
Re-detection and a Possible Time Variation of Soft X-ray Polarisation from the Crab
Creators: name: Feng, Hua
name: Li, Hong
name: Long, Xiangyun
name: Bellazzini, Ronaldo
name: Costa, Enrico
name: Wu, Qiong
name: Huang, Jiahui
name: Jiang, Weichun
name: Minuti, Massimo
name: Wang, Weihua
name: Xu, Renxin
name: Yang, Dongxin
name: Baldini, Luca
name: Citraro, Saverio
name: Nasimi, Hikmat
name: Soffitta, Paolo
name: Muleri, Fabio
name: Jung, Aera
name: Yu, Jiandong
name: Jin, Ge
name: Zeng, Ming
name: An, Peng
name: Brez, Alessandro
name: Latronico, Luca
name: Sgro, Carmelo
name: Spandre, Gloria
name: Pinchera, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Crab nebula is so far the only celestial object with a statistically significant detection in soft x-ray polarimetry, a window that has not been explored in astronomy since the 1970s. However, soft x-ray polarimetry is expected to be a sensitive probe of magnetic fields in high energy astrophysical objects including rotation-powered pulsars and pulsar wind nebulae. Here we report the re-detection of soft x-ray polarisation after 40 years from the Crab nebula and pulsar with PolarLight, a miniature polarimeter utilising a novel technique onboard a CubeSat. The polarisation fraction of the Crab in the on-pulse phases was observed to decrease after a glitch of the Crab pulsar on July 23, 2019, while that of the pure nebular emission remained constant within uncertainty. The phenomenon may have lasted about 100 days. If the association between the glitch and polarisation change can be confirmed with future observations, it will place strong constraints on the physical mechanism of the high energy emission and glitch of pulsars.
description: Authors' version of an article published in Nature Astronomy on 11 May 2020. Link to the paper: https://www.nature.com/articles/s41550-020-1088-1
Van Hove singularity and spontaneous Fermi surface symmetry breaking in Sr3Ru2O7
Creators: name: Yamase, Hiroyuki
name: Katanin, Andrey A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The most salient features observed around a metamagnetic transition in Sr3Ru2O7 are well captured in a simple model for spontaneous Fermi surface symmetry breaking under a magnetic field, without invoking a putative quantum critical point. The Fermi surface symmetry breaking happens in both a majority and a minority spin band but with a different magnitude of the order parameter, when either band is tuned close to van Hove filling by the magnetic field. The transition is second order for high temperature T and changes into first order for low T. The first order transition is accompanied by a metamagnetic transition. The uniform magnetic susceptibility and the specific heat coefficient show strong T dependence, especially a log T divergence at van Hove filling. The Fermi surface instability then cuts off such non-Fermi liquid behavior and gives rise to a cusp in the susceptibility and a specific heat jump at the transition temperature.
description: 11 pages, 4 figures
Rarity: discovering rare cell populations from single-cell imaging data.
Creators: name: Märtens, Kaspar
name: Bortolomeazzi, Michele
name: Montorsi, Lucia
name: Spencer, Jo
name: Ciccarelli, Francesca
name: Yau, Christopher
Publisher: name: The Francis Crick Institute
Year: 2024
Subjects: classificationCode: Gene Expression
subject: Gene Expression
classificationCode: Genetics & Genomics
subject: Genetics & Genomics
classificationCode: Genome Integrity & Repair
subject: Genome Integrity & Repair
classificationCode: Computational & Systems Biology
subject: Computational & Systems Biology

description: MOTIVATION: Cell type identification plays an important role in the analysis and interpretation of single-cell data and can be carried out via supervised or unsupervised clustering approaches. Supervised methods are best suited where we can list all cell types and their respective marker genes a priori, while unsupervised clustering algorithms look for groups of cells with similar expression properties. This property permits the identification of both known and unknown cell populations, making unsupervised methods suitable for discovery. Success is dependent on the relative strength of the expression signature of each group as well as the number of cells. Rare cell types therefore present a particular challenge that is magnified when they are defined by differentially expressing a small number of genes. RESULTS: Typical unsupervised approaches fail to identify such rare subpopulations, and these cells tend to be absorbed into more prevalent cell types. In order to balance these competing demands, we have developed a novel statistical framework for unsupervised clustering, named Rarity, that enables the discovery process for rare cell types to be more robust, consistent, and interpretable. We achieve this by devising a novel clustering method based on a Bayesian latent variable model in which we assign cells to inferred latent binary on/off expression profiles. This lets us achieve increased sensitivity to rare cell populations while also allowing us to control and interpret potential false positive discoveries. We systematically study the challenges associated with rare cell type identification and demonstrate the utility of Rarity on various IMC datasets. AVAILABILITY AND IMPLEMENTATION: Implementation of Rarity together with examples is available from the Github repository (https://github.com/kasparmartens/rarity).
The strangest lifetime: A bizarre story of $τ(Ω_c^0)$
Creators: name: Cheng, Hai-Yang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: For a long time it has been established both experimentally and theoretically that $Ω_c^0$ is shortest-lived among the four singly charmed baryons which decay weakly. The situation was dramatically changed in 2018 when LHCb reported a new measurement of the $Ω_c^0$ lifetime using semileptonic $b$-hadron decays. The value is nearly four times larger than the previous world average of $τ(Ω_c^0)$ and it is confirmed by the most recent LHCb measurement with the prompt production. In this viewpoint article, we review the status and point out that heavy quark expansion (HQE) fails to apply to $Ω_c^0$ to the order of $1/m_c^4$. By demanding a sensible HQE for $Ω_c^0$ will lead to a lifetime of $Ω_c^0$ longer than $Λ_c^+$.
description: 3 pages, 2 figures, viewpoint article for Science Bulletin, references added, typos corrected. arXiv admin note: substantial text overlap with arXiv:2109.01216
Differences in code terminology and frequency of findings in meat inspection of finishing pigs in seven European countries
Creators: name: Alban, Lis
name: Vieira-Pinto, Madalena
name: Meemken, Diana
name: Maurer, Patric
name: Ghidini, Sergio
name: Santos, Susana
name: Laguna, Jaime Gómez
name: Laukkanen-Ninios, Riikka
name: Alvseike, Ole
name: Langkabel, Nina
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: Meat inspection
subject: Modernisation
subject: Codes
subject: Pigs
subject: Condemnation
subject: SWOT analysis
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: The overall objectives of meat inspection are to contribute to food safety, animal welfare, and animal health. In the European Union (EU), there is a request for a modernised meat inspection system that addresses these objectives in a more valid, feasible and cost-effective way than does the traditional system. One part of the modernisation deals with the coding system to register meat inspection findings. Although unified standards are set at the EU level for judgement criteria regarding fitness of meat for consumption, different national systems are in force. The question is the extent of the differences and whether there is a basis for harmonisation. To investigate this, information was gathered about the code systems in Denmark, Finland, Germany, Italy, Norway, Portugal and Spain. Moreover, meat inspection data covering pigs slaughtered in 2019 were collected. A comparison of the number of codes available, the terminology and the frequencies of the findings registered was undertaken. Codes with a similar meaning were grouped. Hereby, two lists were compiled showing the most common codes leading to total and to partial condemnation. Substantial variations in the percentage of condemned pigs and in the terms used were identified, and possible reasons behind this are discussed. Moreover, a strengths-weaknesses-opportunities-threats (SWOT)-like analysis was applied to the coding systems. Finally, the reasons for unfitness of meat given in the EU Food Inspection Regulation 2019/627 were compared to the national code lists. The results show the systems in force varied substantially, and each system had its advantages and disadvantages. The diverse terminology observed made it a challenge to compare data between countries. Development of harmonised terminology for meat inspection findings is suggested, enabling comparison of data between abattoirs, regions, and countries, while respecting the national epidemiological situation, the local food safety culture, and the trade agreements in force.
Immediate Effects of Low-Frequency Repetitive Transcranial Magnetic Stimulation to Augment Task-Specific Training in Sub-acute Stroke
Creators: name: Jenjira Thanakamchokchai
name: Jarugool Tretriluxana
name: Chutima Jalayondeja
name: Narawut Pakaprot
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2015
Subjects: Non-invasive Brain stimulation,Neural plasticity,Task-specific training,Stroke

description: 1, 20, KKU Research Journal
The Participation in Health Promotion of Health Personnel in Community Hospitals Roi Et province, Thailand
Creators: name: Rungnapaporn Prachanai
name: Prachak Bouphan
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2015
Subjects: Community Hospital,Participation in Health Promotion,Health Personnel,Organizational Supports,Motivation

description: 1, 20, KKU Research Journal
Sitana fusca
Creators: name: Bhattarai, Santosh
name: Pokheral, Chiranjibi Prasad
name: Lamichhane, Babu Ram
name: Regmi, Uba Raj
name: Ram, Ashok Kumar
name: Subedi, Naresh
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Agamidae
Sitana
Sitana fusca

description: Sitana fusca (Schleich and Kästle 1998):
This species was described from Bardibas, Mahottari district, Nepal ca. 100 km east of Parsa National Park. This is the first record of Sitana from Parsa National Park. This species was frequently observed at NTNC-Parsa Conservation Program office complex, Bhedaha Khola, and Darau Khola. In June 2016, a gravid female was observed nesting in the office complex, and two hatchlings of same species were encountered in August 2016 (Fig. 13).
description: Published as part of Bhattarai, Santosh, Pokheral, Chiranjibi Prasad, Lamichhane, Babu Ram, Regmi, Uba Raj, Ram, Ashok Kumar & Subedi, Naresh, 2018, Amphibians and reptiles of Parsa National Park, Nepal, pp. 35-48 in Amphibian & Reptile Conservation (e 155) (e 155) 12 (1) on page 41, DOI: 10.5281/zenodo.11390169