cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Synthesis and properties of a sterically crowded triarylphosphine bearing an ester group
Creators: name: Sasaki, Shigeru
name: Yoshifuji, Masaaki
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Developmental Biology
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: A sterically crowded triarylphosphine bearing an ester group, (4-ethoxycarbonyl-2,6-diisopropylphenyl)bis(2,4,6-triisopropylphenyl)phosphine, was synthesized by the lithiation of the corresponding (bromoaryl)phosphine followed by the reaction with excess diethyl carbonate. The ester was obtained as lemon yellow crystals and exhibits the blueshifted UV-Vis absorption and fluorescence as compared with the orange-colored corresponding aldehyde and ketone. The effect of the substitution of an ester group on the photophysical and redox properties of the sterically crowded triarylphosphine is discussed, and the properties of the sterically crowded triarylphosphines bearing an aldehyde, a ketone, and an ester groups are briefly reviewed.
title: Αξιολόγηση εκπαιδευτικής διαδικασίας με τη χρήση πολυκριτήριας ανάλυσης αποφάσεων
title: Evaluation of educational process using multicritera decision analysis
Creators: name: Βαγιωνακης Δημητριος-Στυλιανος
Publisher: name: Technical University of Crete
Year: 2024

description: Η μέθοδος MUSA, (Multicritera Satisfaction Analysis) είναι μια πολυκριτήρια μέθοδος για τη μέτρηση και ανάλυση της ικανοποίησης των πελατών. Ανήκει στην κατηγορία των αναλυτικών-συνθετικών προσεγγίσεων και έχει ως στόχο την εκτίμηση ενός συλλογικού μοντέλου προτιμήσεων πελατών με βάση δεδομένα που έχουν συλλεγεί από έρευνες ικανοποίησης. Είναι μια αποτελεσματική μέθοδος μέτρησης και ανάλυσης της ικανοποίησης πελατών, η οποία χρησιμοποιείται συνεχώς, στο πεδίο της ανάλυσης της ικανοποίησης (satisfaction analysis). Γενικότερα, η MUSA, είναι μια μέθοδος ανάλυσης προτιμήσεων, η
οποία μέσω της ποιοτικής (μη μονότονης) παλινδρόμησης (ordinal regression), αποσκοπεί στην εύρεση μιας συλλογικής συνάρτησης αξιών (ή χρησιμότητας).
Ένας από τους βασικότερους άξονες της εύρυθμης λειτουργίας της Ανώτατης Εκπαίδευσης, είναι η αποτίμηση και η διασφάλιση της ποιότητας της εκπαιδευτικής διαδικασίας. Αυτή επιτυγχάνεται, μέσω συστηματικών διαδικασιών εσωτερικής αξιολόγησης σε όλα τα
ακαδημαϊκά επίπεδα. Βασικό εργαλείο και σημείο έναρξης των περισσοτέρων διαδικασιών αυτών, είναι η συλλογή δεδομένων (ποιοτικών και ποσοτικών), τόσο από το διδακτικό προσωπικό, όσο και από την φοιτητική κοινότητα. Πιο συγκεκριμένα, η αξιολόγηση από τους φοιτητές επιτυγχάνεται με την συμπλήρωση ειδικά διαμορφωμένων ερωτηματολογίων. Προκειμένου να εξαχθεί ένα ασφαλές συμπέρασμα, από τα δεδομένα αυτά, θα γίνει η προσαρμογή και εφαρμογή της μεθόδου MUSA, και πιο συγκεκριμένα της παραλλαγής της MUSA+, στις ανάγκες της προβληματικής αυτής.
Looking Outside the Window: Wide-Context Transformer for the Semantic Segmentation of High-Resolution Remote Sensing Images
Creators: name: Ding, Lei
name: Lin, Dong
name: Lin, Shaofu
name: Zhang, Jing
name: Cui, Xiaojie
name: Wang, Yuebin
name: Tang, Hao
name: Bruzzone, Lorenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Long-range contextual information is crucial for the semantic segmentation of High-Resolution (HR) Remote Sensing Images (RSIs). However, image cropping operations, commonly used for training neural networks, limit the perception of long-range contexts in large RSIs. To overcome this limitation, we propose a Wide-Context Network (WiCoNet) for the semantic segmentation of HR RSIs. Apart from extracting local features with a conventional CNN, the WiCoNet has an extra context branch to aggregate information from a larger image area. Moreover, we introduce a Context Transformer to embed contextual information from the context branch and selectively project it onto the local features. The Context Transformer extends the Vision Transformer, an emerging kind of neural network, to model the dual-branch semantic correlations. It overcomes the locality limitation of CNNs and enables the WiCoNet to see the bigger picture before segmenting the land-cover/land-use (LCLU) classes. Ablation studies and comparative experiments conducted on several benchmark datasets demonstrate the effectiveness of the proposed method. In addition, we present a new Beijing Land-Use (BLU) dataset. This is a large-scale HR satellite dataset with high-quality and fine-grained reference labels, which can facilitate future studies in this field.
Dual Aspect Self-Attention based on Transformer for Remaining Useful Life Prediction
Creators: name: Zhang, Zhizheng
name: Song, Wen
name: Li, Qiqiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Remaining useful life prediction (RUL) is one of the key technologies of condition-based maintenance, which is important to maintain the reliability and safety of industrial equipments. Massive industrial measurement data has effectively improved the performance of the data-driven based RUL prediction method. While deep learning has achieved great success in RUL prediction, existing methods have difficulties in processing long sequences and extracting information from the sensor and time step aspects. In this paper, we propose Dual Aspect Self-attention based on Transformer (DAST), a novel deep RUL prediction method, which is an encoder-decoder structure purely based on self-attention without any RNN/CNN module. DAST consists of two encoders, which work in parallel to simultaneously extract features of different sensors and time steps. Solely based on self-attention, the DAST encoders are more effective in processing long data sequences, and are capable of adaptively learning to focus on more important parts of input. Moreover, the parallel feature extraction design avoids mutual influence of information from two aspects. Experiments on two widely used turbofan engines datasets show that our method significantly outperforms the state-of-the-art RUL prediction methods.
Instrument for simultaneous measurement of Seebeck coefficient and thermal conductivity in the temperature range 300-800 K with python interfacing
Creators: name: Sk, Shamim
name: Pandey, Abhishek
name: Pandey, Sudhir K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Fabrication and characterization of instrument for high-temperature simultaneous measurement of Seebeck coefficient (S) and thermal conductivity ($κ$) has been carried out with python automation. The steady-state based Fourier's law of thermal conduction is employed for $κ$ measurement. The parallel thermal conductance technique is implemented for heat loss measurement. Introducing the thin heater and insulating heater base minimize the heat loss and make the way easier to arrive at high temperature. Measurement of S is carried out using differential method. Same thermocouples are used to measure temperature as well as voltage for S measurement. Care of temperature dependent S of thermocouple has also been taken. Simple design, small size, lightweightmake this instrument more robust. All the components for making sample holder are easily available in the market and can be replaced as per the user demand. This instrument can measure samples with various dimensions and shapes in the temperature range 300 $-$ 800 K. The instrument is validated using different class of samples, such as nickel, gadolinium, Fe$_{2}$VAl and LaCoO$_{3}$. Wide range of S from $\sim$ $-$20 to $\sim$600 $μ$V/K and $κ$ from $\sim$1.1 to $\sim$23.5 W/m-K are studied. The measured values of S and k are in good agreement with the reported data.
On the Representation of Clicks
Creators: name: Bradlow, Ann R.
Publisher: name: Zenodo
Year: 1992

description: At the level of phonetic description, click consonants involve a double articulation, and a timing of articulatory gestures which results in an ingressive, velaric airstream mechanism. Phonological analyses regarding the linguistic representation of clicks vary in the status - major or minor - they afford each of the two place of articulation specifications. These segments are typologically unusual in that they occur only in certain language families of southern and eastern Africa. This paper combines information about the phonetic description and phonological patterning of clicks, with typological universals of doubly articulated segments, to argue that clicks are back consonants with a secondary front closure. The most complex and extensive inventory of click consonants described in the literature is found in !XOO, a Bushman language spoken in Botswana and Namibia. This language has a total of 80 distinctive clicks, being almost double the number of clicks in Zunhoisi (also known as !Xu), the next most extensive click language. Due to this complexity, !XOO is a particularly interesting language to study, and owing to the extensive fieldwork of Dr. Anthony Traill, data on this language is readily available. For these reasons, this paper will focus primarily on data from !Xoo. The remainder of this paper is structured as follows. In section 1, I provide a brief phonetic description of clicks. Section 2 reviews the main points of the various phonological feature analyses of clicks. Section 3 discusses the notion of primary and secondary articulations and how it bears on the representation of clicks. This section also proposes an analysis of clicks in which they are represented as back consonants with a secondary front articulation. Section 4 discusses the clicks of the Khoisan language, !XOO, and their relationship to the non-click consonants of the language. The comparison of the click and non-click systems of this language will be shown to provide further support for the analysis proposed in section 3. Finally, section 5 provides a summary and conclusions of the discussion.
description: This paper is copyrighted, and is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) - see https://creativecommons.org/licenses/by-nc-nd/4.0/
Cyclophora suppunctaria
Creators: name: Fernández Vidal, Eliseo H.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Cyclophora
Cyclophora suppunctaria

description: Cyclophora suppunctaria (Zeller, 1847)
 A Coruña: Playa Lago, 2 ♀♀, 3-V-2014 (l), (ds), FRM ; 1 ♂ y 2 ♀♀, 10-V-2014 (g), (l), ( ♀♀ ds), FRM .
  Cyclophora punctaria (Linnaeus, 1758) A Coruña: Playa Lago, 1  ♂, 18-V-2014 (t).
description: Published as part of Fernández Vidal, Eliseo H., 2015, Nuevas adiciones a los geométridos de Galicia (España, N. O. Península Ibérica). (Lepidoptera: Geometridae)., pp. 261-276 in Arquivos Entomolóxicos 13 on page 268, DOI: 10.5281/zenodo.12714803
Friedel Oscillations and superconducting-gap enhancement by impurity scattering
Creators: name: Stosiek, Matthias
name: Baretzky, Clemens
name: Balashov, Timofey
name: Evers, Ferdinand
name: Wulfhekel, Wulf
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Experiments observe an enhanced superconducting gap over impurities as compared to the clean-bulk value. In order to shed more light on this phenomenon, we perform simulations within the framework of Bogoliubov-deGennes theory applied to the attractive Hubbard model. The simulations qualitatively reproduce the experimentally observed enhancement effect; it can be traced back to an increased particle density in the metal close to the impurity site. In addition, the simulations display significant differences between a thin (2D) and a very thick (3D) film. In 2D pronounced Friedel oscillations can be observed, which decay much faster in (3D) and therefore are more difficult to resolve. Also this feature is in qualitative agreement with the experiment.
Stellarator coil design using cubic splines for improved access on the outboard side
Creators: name: Lonigro, N.
name: Zhu, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In recent years many efforts have been undertaken to simplify coil designs for stellarators due to the difficulties in fabricating non-planar coils. The FOCUS code removes the need for a winding surface and represents the coils as arbitrary curves in 3D. In the following work, the implementation of a spline representation for the coils in FOCUS is described, along with the implementation of a new engineering constraint to design coils with a straighter outer section. The new capabilities of the code are shown as an example on HSX, NCSX, and a prototype quasi-axisymmetric reactor-sized stellarator. The flexibility granted by splines along with the new constraint will allow for stellarator coil designs with improved accessibility and simplified maintenance
description: Submitted to Nuclear Fusion
Phase-Aberration Correction in Shear-wave Elastography Imaging Using Local Speed-of-Sound Adaptive Beamforming
Creators: name: Chintada, Bhaskara Rao
name: Rau, Richard
name: Goksel, Orcun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Shear-wave Elastography Imaging (SWEI) is a noninvasive imaging modality that provides tissue elasticity information by measuring the travelling speed of an induced shear-wave. It is commercially available on clinical ultrasound scanners and popularly used in the diagnosis and staging of liver disease and breast cancer. In conventional SWEI methods, a sequence of acoustic radiation force (ARF) pushes are used for inducing a shear-wave, which is tracked using high frame-rate multi-angle plane wave imaging (MA-PWI) to estimate the shear-wave speed (SWS). Conventionally, these plane waves are beamformed using a constant speed-of-sound (SoS), assuming an a-priori known and homogeneous tissue medium. However, soft tissues are inhomogeneous, with intrinsic SoS variations. In this work, study the SoS effects and inhomogeneities on SWS estimation, using simulation and phantoms experiments with porcine muscle as an abbarator, and show how these aberrations can be corrected using local speed-of-sound adaptive beamforming. For shear-wave tracking, we compare standard beamform with spatially constant SoS values to software beamforming with locally varying SoS maps. We show that, given SoS aberrations, traditional beamforming using a constant SoS, regardless of the utilized SoS value, introduces a substantial bias in resulting SWS estimations. Average SWS estimation disparity for the same material was observed over 4.3 times worse when a constant SoS value is used compared to that when a known SoS map is used for beamforming. Such biases are shown to be corrected by using a local SoS map in beamforming, indicating the importance of and a need for local SoS reconstruction techniques.
Singular quasilinear elliptic problems with convection terms
Creators: name: Guarnotta, Umberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J57, 35J60, 35J62, 35J75, 35J92

description: In this paper we present some very recent results regarding existence, uniqueness, and multiplicity of solutions for quasilinear elliptic equations and systems, exhibiting both singular and convective reaction terms. The importance of boundary conditions (Dirichlet, Neumann, or Robin) is also discussed. Existence is achieved via sub-supersolution and truncation techniques, fixed point theory, nonlinear regularity, and set-valued analysis, while uniqueness and multiplicity are obtained by monotonicity arguments.
A- and B-fluorinated aminophosphonates–Synthesis and properties
Creators: name: Kaźmierczak, Marcin
name: Kubicki, Maciej
name: Koroniak, Henryk
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Interest in synthesis of fluorinated aminophosphonates has grown significantly in recent years due to their promising applications in medicinal and bioorganic chemistry. We report herein efficient and general methods for the synthesis of α- and β-monofluorinated aminophosphonates. Series of β-fluoro aminophosphonates were prepared in nucleophilic DAST-mediated fluorination of α-hydroxyphosphonates. The Horner–Wadsworth–Emmons reaction between carbonyl compounds containing an amino group and lithiated tetraethyl fluoromethylenediphosphonate was used in the synthesis of α-fluorinated-γ-aminophosphonates. Futhermore, this protocol was efficiently applied in the synthesis of dipeptide analogues α-fluorinated-γ-aminophosphonates.
Rhodometra sacraria
Creators: name: Fernández Vidal, Eliseo H.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Rhodometra
Rhodometra sacraria

description: Rhodometra sacraria (Linnaeus, 1767)
 A Coruña: Playa Lago, 1 ♀, 23-VI-2014, (t), (ds, ls).
  Cataclysme uniformata (Bellier, 1862) Lugo: supra Carbedo, 3  ♂♂, 24-VIII-2014 (t).
  En Redondo et al. (2009: 173) se indica por primera y ̇nica vez su presencia en Galicia mediante un punto ubicado en el nordeste orensano, marcado en el mapa que presentan de su distribución geográfica ibérica. En el que se presenta en Hausmann & Vidalepp (2012: 46) se repite dicha ubicación para este interesante endemismo ibérico que alcanza a poblar el sudeste pirenaico francés.
 Citamos ahora esta especie por primera vez de una localización gallega concreta, resultando nueva para la provincia de Lugo.
description: Published as part of Fernández Vidal, Eliseo H., 2015, Nuevas adiciones a los geométridos de Galicia (España, N. O. Península Ibérica). (Lepidoptera: Geometridae)., pp. 261-276 in Arquivos Entomolóxicos 13 on page 268, DOI: 10.5281/zenodo.12714803
Open and distance learning (ODL) wellbeing investigation within the Global South
Creators: name: Graham, Marien
name: Magare, Ishmael
name: Eloff, Irma
Publisher: name: University of Pretoria
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: This study explored the relationship between demographic variables and student well-being in Open and Distance Learning (ODL) using the PERMA framework. PERMA = Positive emotions (PE), Engagement (EN), Relationships (REL), Meaning (MNG), and Accomplishment (ACC). The data is provided in Microsoft Excel format. There are two tabs. The tab titled "Data" has the variables that needed to be re-coded (the original variables and the re-coded variables), whereas the tab titled "Description" explains how and why re-coding was necessary.
Circuitos combinaciones. Reglas de diseño
Creators: name: Machado, Felipe
Publisher: name: Zenodo
Year: 2020
Subjects: Electrónica Digital
Bloques combinacionales
Puertas lógicas

description: Presentación de clase con el resumen de qué es un circuito combinacional y qué reglas se deben seguir para su diseño: Cómo conectar los componentes No hacer bucles Video de la presentación disponible: https://youtu.be/7qJSQClaSyk
Modeling silo clogging with nonlocal granular rheology
Creators: name: Dunatunga, Sachith
name: Kamrin, Ken
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Granular flow in a silo demonstrates multiple nonlocal rheological phenomena due to the finite size of grains. We solve the Nonlocal Granular Fluidity (NGF) continuum model in quasi-2D silo geometries and evaluate its ability to predict these nonlocal effects, including flow spreading and, importantly, clogging (arrest) when the opening is small enough. The model is augmented to include a free-separation criterion and is implemented numerically with an extension of the trans-phase granular flow solver described in arXiv:1411.5447, to produce full-field solutions. The implementation is validated against analytical results of the model in the inclined chute geometry, such as the solution for the $H_{\mathrm{stop}}$ curve for size-dependent flow arrest, and the velocity profile as a function of layer height. We then implement the model in the silo geometry and vary the apparent grain size. The model predicts a jamming criterion when the opening competes with the scale of the mean grain size, which agrees with previous experimental studies, marking the first time to our knowledge that silo jamming has been achieved with a continuum model. For larger openings, the flow within the silo obtains a diffusive characteristic whose spread depends on the model's nonlocal amplitude and the mean grain size. The numerical tests are controlled for grid effects and a comparison study of coarse vs refined numerical simulations shows agreement in the pressure field, the shape of the arch in a jammed silo configuration, and the velocity field in a flowing configuration.
description: 30 pages, 10 figures
The Bilabial Fricatives in Ewe: Innovation or Retention?
Creators: name: Capo, Hounkpati B. C.
Publisher: name: Zenodo
Year: 1992

description: Ewe is usually offered as a classical example of a language with a phonemic
 contrast between bilabial and labio-dental fricatives. As more and more datahave become available on neighboring languages, a Gbe unit has been set up
 as one of the intermediary nodes between Kwa (ultimately dominated by Niger-Congo via Atlantic-Congo via Volta-Congo) and Eue, such that it also dominates F:m. Gen-Mina, Gun, etc. The obvious question is whether the famous contrast was attested in Proto-Gbe. While exploring alternative views, the present paper argues that there was a contrast between the antecedents of these sounds, but that the bilabial fricatives, as presently attested in Eue, have been innovated. It also touches upon issues related to the hierarchical representation of features and their contents.
description: This paper is copyrighted, and is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) - see https://creativecommons.org/licenses/by-nc-nd/4.0/ A first draft of this paper was read at a meeting of the Tuesday Colloquium at the Department of Modern Languages and Linguistics, Cornell University. I am very grateful for comments received at that time, especially from Carol Rosen, Abby Cohn, and Nick Clements. Thanks are also due to the Fulbright Foundation for enabling me to spend a year at Cornell as a Scholar-in-Residence (1990-91).
Information Scrambling with Conservation Laws
Creators: name: Kudler-Flam, Jonah
name: Sohal, Ramanjit
name: Nie, Laimei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The delocalization or scrambling of quantum information has emerged as a central ingredient in the understanding of thermalization in isolated quantum many-body systems. Recently, significant progress has been made analytically by modeling non-integrable systems as stochastic systems, lacking a Hamiltonian picture, while honest Hamiltonian dynamics are frequently limited to small system sizes due to computational constraints. In this paper, we address this by investigating the role of conservation laws (including energy conservation) in the thermalization process from an information-theoretic perspective. For general non-integrable models, we use the equilibrium approximation to show that the maximal amount of information is scrambled (as measured by the tripartite mutual information of the time-evolution operator) at late times even when a system conserves energy. In contrast, we explicate how when a system has additional symmetries that lead to degeneracies in the spectrum, the amount of information scrambled must decrease. This general theory is exemplified in case studies of holographic conformal field theories (CFTs) and the Sachdev-Ye-Kitaev (SYK) model. Due to the large Virasoro symmetry in 1+1D CFTs, we argue that, in a sense, these holographic theories are not maximally chaotic, which is explicitly seen by the non-saturation of the second Rényi tripartite mutual information. The roles of particle-hole and U(1) symmetries in the SYK model are milder due to the degeneracies being only two-fold, which we confirm explicitly at both large- and small-$N$. We reinterpret the operator entanglement in terms the growth of local operators, connecting our results with the information scrambling described by out-of-time-ordered correlators, identifying the mechanism for suppressed scrambling from the Heisenberg perspective.
description: 49 pages, including 6 figures and 5 appendices. Updated with minor revisions
Polarization of gravitational waves from helical MHD turbulent sources
Creators: name: Pol, Alberto Roper
name: Mandal, Sayan
name: Brandenburg, Axel
name: Kahniashvili, Tina
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use direct numerical simulations of decaying primordial hydromagnetic turbulence with helicity to compute the resulting gravitational wave (GW) production and its degree of circular polarization. We find a clear dependence of the polarization of the resulting GWs on the fractional helicity of the turbulent source and we show that driven magnetic fields produce GWs more efficiently than magnetic fields that are initially present, leading to larger spectral amplitudes. The helicity does not have a huge impact on the maximum spectral amplitude in any of the two types of turbulence considered. However, the GW spectrum at wave numbers away from the peak becomes smaller for larger values of the magnetic fractional helicity. The degree of circular polarization approaches zero at frequencies below the peak, and reaches its maximum at the peak. At higher frequencies, it stays finite if the magnetic field is initially present, and it approaches zero if it is driven. We predict that the spectral peak of the GW signal can be detected by LISA if the turbulent energy density is at least $\sim 3\%$ of the radiation energy density, and the characteristic scale is a hundredth of the horizon at the electroweak scale. We show that the resulting GW polarization is unlikely to be detectable by the anisotropies induced by our proper motion in the dipole response function of LISA. Such signals can, however, be detectable by cross-correlating data from the LISA-Taiji network for turbulent energy densities of $\sim 5\%$, and fractional helicity of 0.5 to 1. Second-generation space-based GW detectors, such as BBO and DECIGO, would allow for the detection of a larger range of the GW spectrum and smaller amplitudes of the magnetic field.
description: 49 pages, 18 figures, 1 table, accepted in JCAP
A fresh look at participation of phosphorus atom in conjugation
Creators: name: Katsyuba, Sergey A.
name: Burganov, Timur I.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Science Policy

description: The strength of conjugation between the lone pair on phosphorus atom and aryl, alkenyl and styryl moieties of several phosphines has been quantitatively characterized by the use of Raman intensities of the bands of the above-mentioned substituents. It is shown that conjugation in the phosphines produces an intensification of Raman bands and a simultaneous bathochromic shift of the electronic absorption spectra for all the phosphines, except of phenylphosphine PhPH2, where the lone pair on PIII does not conjugate with phenyl moiety. Nevertheless, the lone pair is able to conjugation within more expanded aromatic π-systems, and the conjugational effects are strongly enhanced as π-system of arylphosphines expands.
Eulithis prunata
Creators: name: Fernández Vidal, Eliseo H.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Eulithis
Eulithis prunata

description: Eulithis prunata (Linnaeus, 1758)
  Lugo: supra Carbedo, 2  ♂♂, 24-VIII-2014 (t). (Fig. 5a y b).
  Nueva para Galicia. Como lugar más proximo a su territorio ha sido citada del Gerês (Portugal) lindando con el Xurés (Ourense). En el mapa presentado en Redondo et al. (2009: 194) se indica su presencia en puntos de la Cordillera Cantábrica (macizo central, vertientes leonesa y asturiana) como área más occidental ibérica poblada por esta especie con la excepción de la reseñada localización lusa; idéntica distribución geográfica ibérica se contempla en Hausmann & Vidalepp (2012: 259). El mapa presentado en Leraut (2009: 618), manchando toda la Península Ibérica, induce a confusión sumado a que se reseña que “In Europe almost everywhere”, lo que sólo es cierto para gran parte de la Europa transpirenaica. Por supuesto que en Galicia puede descartarse que esta conspicua especie sea coṁn; probablemente su distribución se limite a sus áreas montanas meridionales y orientales, aunque nosotros nunca la hemos detectado en los Ancares ni en el área del macizo de Trevinca. En los valles leoneses de San Emiliano, Luna y Arbás está ampliamente distribuida pero estimamos que no es abundante porque sólo la hemos recolectado ocasionalmente, varios años de junio a agosto.
description: Published as part of Fernández Vidal, Eliseo H., 2015, Nuevas adiciones a los geométridos de Galicia (España, N. O. Península Ibérica). (Lepidoptera: Geometridae)., pp. 261-276 in Arquivos Entomolóxicos 13 on page 269, DOI: 10.5281/zenodo.12714803
Eulithis populata
Creators: name: Fernández Vidal, Eliseo H.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Eulithis
Eulithis populata

description: Eulithis populata (Linnaeus, 1758)
 Lugo: Alto do Couto, 1 ♂, 23-VIII-2014 (t), (Fig. 5c).
  Nueva para Galicia. Como localización más cercana a territorio gallego ha sido citada del Gerês (Portugal) y está indicada del área zamorana de Sanabria con un punto en el mapa presentado en Redondo et al. (2009: 194).
description: Published as part of Fernández Vidal, Eliseo H., 2015, Nuevas adiciones a los geométridos de Galicia (España, N. O. Península Ibérica). (Lepidoptera: Geometridae)., pp. 261-276 in Arquivos Entomolóxicos 13 on page 270, DOI: 10.5281/zenodo.12714803
Exponents of Diophantine approximation in dimension two for a general class of numbers
Creators: name: Poëls, Anthony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 11J13, Secondary 11H06, 11J82

description: We study the Diophantine properties of a new class of transcendental real numbers which contains, among others, Roy's extremal numbers, Bugeaud-Laurent Sturmian continued fractions, and more generally the class of Sturmian type numbers. We compute, for each real number $ξ$ of this set, several exponents of Diophantine approximation to the pair $(ξ,ξ^2)$, together with $ω_2^*(ξ)$ and $\widehatω_2^*(ξ)$, the so-called ordinary and uniform exponent of approximation to $ξ$ by algebraic numbers of degree $\leq 2$. As an application, we get new information on the set of values taken by $\widehatω_2^*$ at transcendental numbers, and we give a partial answer to a question of Fischler about his exponent $β_0$.
description: 28 pages, 2 figures
Pyrido-anellated 1,3-azaphospholes-current state and future challenges
Creators: name: Adam, Mohamed S. S.
name: Ghalib, Mohammed
name: Palm, Gottfried J.
name: Jones, Peter G.
name: Heinicke, Joachim W.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: A short overview of the syntheses, properties and some reactions of pyrido-anellated 1.3-azaphospholes is presented. Except for 2-phosphaindolizines, which have been intensively studied with respect to syntheses, electrophilic substitution and cycloadditions, this is a class of compound that has still been only sparingly investigated. Preliminary results and hints as to possible perspectives are included to encourage further research on these novel P,N hybrid ligands.
Analytic and asymptotically flat hairy (ultra-compact) black-hole solutions and their axial perturbations
Creators: name: Bakopoulos, Athanasios
name: Nakas, Theodoros
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we consider a very simple gravitational theory that contains a scalar field with its kinetic and potential terms minimally coupled to gravity, while the scalar field is assumed to have a coulombic form. In the context of this theory, we study an analytic, asymptotically flat, and regular (ultra-compact) black-hole solutions with non-trivial scalar hair of secondary type. At first, we examine the properties of the static and spherically symmetric black-hole solution -- firstly appeared in 1504.08209 [gr-qc] -- and we find that in the causal region of the spacetime the stress-energy tensor, needed to support our solution, satisfies the strong energy conditions. Then, by using the slow-rotating approximation, we generalize the static solution into a slowly rotating one, and we determine explicitly its angular velocity $ω(r)$. We also find that the angular velocity of our ultra-compact solution is always larger compared to the angular velocity of the corresponding equally massive slow-rotating Schwarzschild black hole. In addition, we investigate the axial perturbations of the derived solutions by determining the Schrödinger-like equation and the effective potential. We show that there is a region in the parameter space of the free parameters of our theory, which allows for the existence of stable ultra-compact black hole solutions. Specifically, we calculate that the most compact and stable black hole solution is 0.551 times smaller than the Schwarzschild one, while it rotates 2.491 times faster compared to the slow-rotating Schwarzschild black hole. Finally, we present without going into details the generalization of the derived asymptotically flat solutions to asymptotically (A)dS solutions.
description: 23 pages, 8 figures, title changed, analysis extended, references updated, typos corrected, matches published version (to appear in JHEP)
Chloroclysta siterata
Creators: name: Fernández Vidal, Eliseo H.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Chloroclysta
Chloroclysta siterata

description: Chloroclysta siterata (Hufnagel, 1767)
 A Coruña: Trasanquelos, 1 ♂, 8-II-2008 (g), (l).
 Ejemplar con sus marcas alares muy difuminadas, de ahí que hayamos procedido a análisis genital para asegurar su determinación.
description: Published as part of Fernández Vidal, Eliseo H., 2015, Nuevas adiciones a los geométridos de Galicia (España, N. O. Península Ibérica). (Lepidoptera: Geometridae)., pp. 261-276 in Arquivos Entomolóxicos 13 on page 270, DOI: 10.5281/zenodo.12714803
Facilitating ecological weed management decisions by assessing risk-benefit tradeoffs
Creators: name: S. Zwickle
name: R. Wilson
name: D. Bessette
name: C. Herms
name: D. Doohan
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: We used the mental models research method to generate a conceptual map of how Midwest farmers use knowledge, experience, and individual perceptions of weed-related risk to make weed management decisions. We discovered that Midwest farmer knowledge of ecological weed management practices is robust, and that the difficult tradeoffs farmers make regarding cultivation, cover crops, and soil health determine what weed management practices they use. Midwest farmers balance the risks of cultivation and implementation of cover crops with their valuable benefits to soil health and weed suppression. Developing a decision support tool that provides a baseline of scientific evidence and that offers flexibility based on farmers’ experiences and values will clarify these tradeoffs and guide effective decision making.
Engineered Near and Far Field Optical Response of Dielectric Nanostuctures using Focused Cylindrical Vector Beams
Creators: name: Montagnac, Martin
name: Agez, Gonzague
name: Patoux, Adelin
name: Arbouet, Arnaud
name: Paillard, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Near- and far-field optical properties of silicon nanostructures under linear polarization (Gaussian beam), and azimuthally or radially focused cylindrical vector beams are investigated by finite-difference time-domain method (FDTD) in Meep open-source software. A python toolkit allowing FDTD simulations in Meep for using those excitation sources is provided. In addition to the preferential excitation of specific electric or magnetic resonance modes as function of the excitation beam polarization, it is shown in the case of spheroids that shape anisotropy affects the resonance wavelength and the dipole orientation of the magnetic or electric dipole mode. For radial or linear polarization, the electric dipole resonance is split by an anapole mode depending on the spheroid symmetry axis with respect to the electric field orientation. Finally, the optical properties in both far-field (scattering pattern) and near-field (electric and magnetic field hot spots) can be tuned by changing the excitation polarization at a fixed wavelength and selecting properly the spheroid shape and dimensions. These numerical simulations can be extended to more complex shapes, or fabrication-friendly nanostructures such as nanocylinders with circular or elliptic sections.
Dynamic changes in circulating miRNA levels in response to antitumor therapy of lung cancer
Creators: name: Ponomaryova, Anastasia A.
name: Morozkin, Evgeny S.
name: Rykova, Elena Y.
name: Zaporozhchenko, Ivan A.
name: Skvortsova, Tatyana E.
name: Аlexey Y. Dobrodeev
name: Zavyalov, Alexander A.
name: Tuzikov, Sergey A.
name: Vlassov, Valentin V.
name: Cherdyntseva, Nadezhda V.
name: Laktionov, Pavel P.
name: Choinzonov, Evgeny L.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: Plant Biology

description: Purpose: Expression levels of cancer-associated microRNAs were reported to be altered in serum/plasma samples from lung cancer patients compared with healthy subjects. The purpose of this study was to estimate the value of five selected miRNAs plasma levels as markers of response to antitumor therapy in lung cancer patients. Materials and Methods: Expression levels of miR-19b, miR-126, miR-25, miR-205, and miR-125b have been evaluated by quantitative reverse transcription PCR versus control miR-16 in blood plasma samples from 23 lung cancer (LC) patients. Plasma samples were obtained from LC patients before treatment (untreated-UT), within 30 days after completing two courses of chemotherapy (postchemotherapy-PC) and 15 days after surgery (postoperative-PO). Results: Repeated Measures ANOVA demonstrated that miR-19b expression levels were decreased in PC and increased in PO samples. These changes were characterized by a significant quadratic trend (p = 0.03). Expression levels of miR-125b increased both after chemotherapy and again after surgery and demonstrated a significant linear trend (p = 0.03). The miR-125b/miR-19b ratio changed during the course of the antitumor treatment with a significant linear trend (p = 0.04). Individual analysis in the groups of patients with partial response to chemotherapy and patients with stable or progressive disease showed different trends for miR-19b, miR-125b, and miR-125b/miR-19b ratio between the groups. The Kaplan–Meier survival curves demonstrated an association of miR-125b/miR-19b ratio value with the survival time without the tumor relapse (p < 0.1). Conclusions: Dynamic change of trends for miR-19b and miR-125b expression levels and miR-125b/miR-19b ratio in the blood plasma have shown a potentiality to discriminate types of response to antitumor therapy in lung cancer patients. Further in-depth investigation is needed to establish a direct link the miRNAs expression levels in blood plasma with therapy response and patient's survival.
Stochastic model of T Cell repolarization during target elimination (II)
Creators: name: Hornak, Ivan
name: Rieger, Heiko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Cytotoxic T lymphocytes (T cells) and natural killer cells form a tight contact, the immunological synapse (IS), with target cells, where they release their lytic granules containing perforin/granzyme and cytokine containing vesicles. During this process the cell repolarizes and moves the microtubule organizing center (MTOC) towards the IS. In the first part of our work we developed a a computational model for the molecular-motor-driven motion of the MT cytoskeleton during T cell polarization and analyzed effects of cortical sliding and capture-shrinkage mechanisms. Here we use this model to analyze the dynamics of the MTOC repositioning in situations in which a) the IS is in an arbitrary position with respect to the initial position of the MTOC and b) the T cell has two IS at two arbitrary positions. In the case of one IS, we found that the initial position determines which mechanism is dominant and that the time of repositioning does not rise monotonously with the MTOC-IS distance. In the case of two IS, we observe several scenarios that have also been reported experimentally: the MTOC alternates stochastically (but with a well defined average transition time) between the two IS; it wiggles in between the two IS without transiting to one of the two; or it is at some point pulled to one of the two IS and stays there. Our model allows to predict which scenario emerges in dependency of the mechanisms in action and the number of dyneins present. We report that the presence of capture-shrinkage mechanism at least in one IS is necessary to assure the transitions in every cell configuration. Moreover, the frequency of transitions does not decrease with the distance between the two IS and is the highest when both mechanisms are present in both IS.
Efficient Alternative Finite Difference WENO Schemes for Hyperbolic Conservation Laws
Creators: name: Balsara, Dinshaw S.
name: Bhoriya, Deepak
name: Shu, Chi-Wang
name: Kumar, Harish
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65M06, 65M22, 65N06, 35Q35, 76T10, 76M20

description: Higher order finite difference Weighted Essentially Non-Oscillatory (WENO) schemes for conservation laws are extremely popular because, for multidimensional problems, they offer high order accuracy at a fraction of the cost of finite volume WENO or DG schemes. Such schemes come in two formulations. The very popular classical finite difference WENO (FD-WENO) method (Shu and Osher, J. Comput. Phys., 83 (1989) 32-78) relies two reconstruction steps applied to two split fluxes. However, the method cannot accommodate different types of Riemann solvers and cannot preserve free stream boundary conditions on curvilinear meshes. This limits its utility. The alternative finite difference WENO (AFD-WENO) method can overcome these deficiencies, however, much less work has been done on this method. The reasons are three-fold. First, it is difficult for the casual reader to understand the intricate logic that requires higher order derivatives of the fluxes to be evaluated at zone boundaries. The analytical methods for deriving the update equation for AFD-WENO schemes are somewhat recondite. To overcome that difficulty, we provide an easily accessible script that is based on a computer algebra system in Appendix A of this paper. Second, the method relies on interpolation rather than reconstruction, and WENO interpolation formulae have not been documented in the literature as thoroughly as WENO reconstruction formulae. In this paper, we explicitly provide all necessary WENO interpolation formulae that are needed for implementing AFD-WENO up to ninth order. The third reason is that AFD-WENO requires higher order derivatives of the fluxes to be available at zone boundaries. Since those derivatives are usually obtained by finite differencing the zone-centered fluxes, they become susceptible to a Gibbs phenomenon when the solution ...
description: Accepted in Communications on Applied Mathematics and Computation
Mesotype didymata
Creators: name: Fernández Vidal, Eliseo H.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Mesotype
Mesotype didymata

description: Mesotype didymata (Linnaeus, 1758)
 Lugo: Alto do Couto, 1 ♂, 23-VIII-2014 (g), (t); 1 ♀, 30-VIII-2014 (t). (Fig. 6b).
  Ambos ejemplares muy volados y desescamados. Nueva para Galicia, de donde no se nos hace nada sorpresiva su presencia dado que está citada del área leonesa adyacente a la lucense del Caurel seġn el mapa presentado en Redondo et al. (2009: 217), así como del área del Gerês en el norte de Portugal casi lindando con el Xurés orensano.
description: Published as part of Fernández Vidal, Eliseo H., 2015, Nuevas adiciones a los geométridos de Galicia (España, N. O. Península Ibérica). (Lepidoptera: Geometridae)., pp. 261-276 in Arquivos Entomolóxicos 13 on page 271, DOI: 10.5281/zenodo.12714803