cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spectral, Spatial, and Time properties of the hydrogen nebula around exoplanet HD209458b
Creators: name: Ben-Jaffel, Lotfi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: All far ultraviolet observations of HD209458 tend to support a scenario in which the inflated hydrogen atmosphere of its planetary companion strongly absorbs the stellar \lya flux during transit. However, it was not clear how the transit absorption depends on the selected wavelength range in the stellar line profile, nor how the atomic hydrogen cloud was distributed spatially around HD209458b. Here we report a sensitivity study of observed time and spectral variations of the stellar flux. In particular, the sensitivity of the absorption depth during transit to the assumed spectral range in the stellar line profile is shown to be very weak, leading to a transit depth in the range $(8.4-8.9)%\pm 2.0%$ for all possible wavelength ranges, and thereby confirming our initially-reported absorption rate. Taking the ratio of the line profile during transit to the unperturbed line profile, we also show that the spectral signature of the absorption by the exoplanetary hydrogen nebula is symmetric and typical of a Lorentzian, optically thick medium. Our results question the adequacy of models that require a huge absorption and/or a strong asymmetry between the blue and red side of the absorption line during transit as no such features could be detected in the HST FUV absorption profile. Finally, we show that standard atmospheric models of HD209458b provide a good fit to the observed absorption profile during transit. Other hybrid models assuming a standard model with a thin layer of superthermal hydrogen on top remain possible.
description: 10 pages, 7 figures, accepted for publication in Astrophysical Journal
Foucault, power/knowledge, and the recent literature on school improvement
Creators: name: Ross, Murray
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines some of the recent literature on school improvement: namely, teacher effectiveness research, school effectiveness research, and four of the commissioned reports on education that were published in the United States during 1983. The analysis relies on a number of central concepts from the social theory of Michel Foucault, in particular his notions of power/knowledge and discipline. It is argued that these bodies of educational research are in themselves either inadequate or inappropriately employed in policy discussions, and that as a result the manipulation of students and teachers seems reasonable and necessary. It is further argued that the teaching practices and educational policies called for in this research are likely to produce unintended, and undesirable consequences which are completely at odds with the stated goals of school improvement.
Additional file 1 of Relationship between renal function and blood pressure dipping status in renal transplant recipients: a longitudinal study
Creators: name: Jaques, David A.
name: Saudan, Patrick
name: Martinez, Chantal
name: Andres, Axel
name: Martin, Pierre-Yves
name: Pechere-Bertschi, Antoinette
name: Ponte, Belen
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: Cancer
subject: Hematology

description: Additional file 1: Supplementary table 1. Patients characteristics according to median eGFR value at T1.
A Unitary Fermi Supersolid: The Larkin-Ovchinnikov Phase
Creators: name: Bulgac, Aurel
name: Forbes, Michael McNeil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present strong theoretical evidence that a Larkin-Ovchinnikov (LOFF/FFLO) pairing phase is favoured over the homogeneous superfluid and normal phases in three-dimensional unitary Fermi systems. Using a Density Functional Theory (DFT) based on the latest quantum Monte-Carlo calculations and experimental results, we show that this phase is competitive over a large region of the phase diagram. The oscillations in the number densities and pairing field have a substantial amplitude, and a period some 3 to 10 times the average interparticle separation. Within the DFT, the transition to a normal polarized Fermi liquid at large polarizations is smooth, while the transition to a fully-paired superfluid is abrupt.
description: 4 pages, 3 figures, RevTeX4. (Minor updates to correspond with published version.)
simulazione dinamica nvh di motopropulsori attraverso metodi avanzati fem - bem - mbs
Creators: name: Fioretto, Giuseppe
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Nel presente elaborato sono stati sviluppati dei modelli di calcolo per l’analisi modale/FEM, acustica/BEM e MBS, di

motopropulsori e di applicazione automobilistica e dei relativi componenti.
Sono stati dapprima considerate delle analisi FEM di alcuni sistemi su citati. Successivamente sono stati condotte

dell’analisi acustiche BEM su alcuni componenti di motori termici. Inoltre sono state condotte delle analisi

multibody su motopropulsori completi. Infine è stato sviluppato un modello di calcolo comprendente un motore a

combustione e un gruppo trasmissione, il quale è stato analizzato integrando i tre metodi di calcolo suddetti.
I risultati numerici di alcuni modelli di calcolo elaborati sono stati confrontati con i rilievi sperimentali

ottenendo una buona correlazione.
INTEGRATIV YONDASHUV ASOSIDA TALABALARNI INNOVATSION KOMPETETLIGINI RIVOJLANTIRISHNING DIDAKTIK IMKONIYATLARI
Creators: name: Soliyev, Eliyor
Publisher: name: Zenodo
Year: 2025

description: Integrativ yondashuvlarning mukammalligini tavsiflarkan,  Jeyms Uilson (Jorj Vashinton Universiteti professori) zamonaviy pedagogikaning yetakchi  va modernizatsiyalashgan unsurlaridan biri deya e’tirof etgan. Ushbu maqolada integrativ yondashuv asosida talabalarni innovatsion kompetetligini rivojlantirishning didaktik imkoniyatlari haqida ma’lumotlar keltirilgan.
The targum (1948:Oct. 1 - 1948:Oct. 29)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1948

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Label-free electrochemiluminescence immunosensor for mucoprotein 1 using a graphene oxide-Ru(Bpy)32+-polyaniline nanocomposite
Creators: name: Ju, Jiali
name: Ding, Qiaoyu
name: Xie, Jianwei
name: Li, Guixin
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Neuroscience
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: A graphene oxide-Ru(bpy)32+-polyaniline-nanocomposite (GO-Ru(bpy)32+-PANI) was prepared to develop a sensitive label-free electrochemiluminescence (ECL) immunosensor for mucoprotein 1 (MUC1). Ru(bpy)32+ and PANI were decorated together on graphene oxide for the first time. The GO-Ru(bpy)32+-PANI material was characterized by scanning electron microscopy (SEM), absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), fluorescence, electrochemical impedance spectroscopy (EIS), and ECL. The GO-Ru(bpy)32+-PANI exhibited excellent stability. The ECL immunosensor for MUC1 was fabricated by covalently immobilizing anti-MUC1 upon GO-Ru(bpy)32+-PANI modified indium-doped tin oxide (ITO) electrode. In the presence of MUC1, a decrease of ECL was observed due to the formation of the anti-MUC1/MUC1 complex. The immunosensor showed a linear relationship from 1 × 10−13 to 1 × 10−7 mg/mL with a detection limit of 8.2 × 10−14 mg/mL. The immunosensor was applied to the determination of MUC1 in human serum.
Quantification of PFAS in Oyster Tissue Using a Rapid QuEChERS Extraction Followed by UPLC-MS/MS Analysis
Creators: name: Campbell, Kaitlyn S.
name: Brandt, Jessica E.
name: Ayers, Sarah A.
name: Stapcinskaite, Sneiguole
name: Perkins, Christopher R.
name: Provatas, Anthony A.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Per- and poly-fluoroalkyl substances (PFAS) are a large group of man-made chemicals that repel oil, stains, grease, and water and are fire resistant. PFAS are known to be persistent in the environment and bioaccumulate in human and animal tissue, soil, and water. To mitigate human exposure to these chemicals, PFAS analysis by ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS) was used to monitor their presence in the environment. This study focused on analyzing oysters harvested from coastal New England for 14 PFAS. The validated method addressed in this study utilized a quick, easy, cheap, effective, rugged, and safe (QuEChERS) approach using various sorbents and showed that the combination of primary secondary amine/graphitized carbon black (PSA/GCB) provided the most effective sample clean-up prior to analysis. The recoveries for the targeted analysis ranged from 61% to 116.3% with relative standard deviations from 2.4% to 13.3% at the 125.0 ng mL−1 analyte level. The method detection limits were from 0.33 ng g−1 to 6.75 ng g−1. In a targeted analysis of five unknown samples, two samples had a detectable level of the legacy compound, perfluorooctanesulfonic acid (PFOS).
Statistical properties of mutualistic-competitive random networks
Creators: name: Martínez-Martínez, C. T.
name: Méndez-Bermúdez, J. A.
name: Peron, Thomas
name: Moreno, Yamir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Mutualistic networks are used to study the structure and processes inherent to mutualistic relationships. In this paper, we introduce a random matrix ensemble (RME) representing the adjacency matrices of mutualistic networks composed by two vertex sets of sizes $n$ and $m-n$. Our RME depends on three parameters: the network size $n$, the size of the smaller set $m$, and the connectivity between the two sets $α$, where $α$ is the ratio of current adjacent pairs over the total number of possible adjacent pairs between the sets. We focus on the the spectral, eigenvector and topological properties of the RME by computing, respectively, the ratio of consecutive eigenvalue spacings $r$, the Shannon entropy of the eigenvectors $S$, and the Randić index $R$. First, within a random matrix theory approach (i.e., a statistical approach), we identify a parameter $ξ\equivξ(n,m,α)$ that scales the average normalized measures $\left< \overline{X} \right>$ (with $X$ representing $r$, $S$ and $R$). Specifically, we show that (i) $ξ\propto αn$ with a weak dependence on $m$, and (ii) for $ξ<1/10$ most vertices in the mutualistic network are isolated, while for $ξ>10$ the network acquires the properties of a complete network, i.e., the transition from isolated vertices to a complete-like behavior occurs in the interval $1/10$ vs. $ξ$ show good correspondence with the properties of real-world networks.
Sensitive and Selective Electrochemical Determination of Thrombin as a Peptide Biomarker by a Multiwalled Carbon Nanotube (MWCNT)/Aptamer/Molecularly Imprinted Polymer (MIP)-Based Biosensor
Creators: name: Turk, Fatih
name: Atilgan, Abdullah
name: Yildirim-Tirgil, Nimet
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Molecularly imprinted polymer (MIP) and DNA aptamers detect targets with high sensitivity and specificity, simulating the structure and function of antibodies and biological receptors. The combination of MIPs and aptamers is being an excellent way to create hybrid alternatives with enhanced attributes and desirable properties. With this motivation, a new method has been developed to produce aptamer/MIP hybrids for protein biomarkers that is simple and reproducible. In addition, multi-walled carbon nanotubes (MWCNTs) were used because of their outstanding chemical/mechanical stability to develop sensitive sensor/biosensors. The MWCNTs/Aptamer/MIP system was characterized using cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Furthermore, atomic force microscopy (AFM) was used for morphological characterization. Thrombin was used as a model peptide for this system with a linear response from 5 pg/mL to 150 pg/mL and a detection limit of 1.4 pg/mL. The system was also tested for selectivity, stability, and practical analysis and showed satisfactory results compared to the literature.
Measuring completion rate in distance education
Creators: name: Wong, Charles Kit Hung
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to create and examine the conceptual and psychometric properties of four components that comprise 'programme outcome' sought by distance educators, and to examine the extent to which student (socio-demographic) and programme (e.g. duration) variables related to them. This ex post facto study utilised the records of 773 correspondence students enrolled at The Chinese University of Hong Kong for the 1984 Summer session and who submitted one or more assignments. Four variables were derived from the data set - completion rate, deviation (lateness in submitting assignments), turnaround (time taken to return marked assignments) and grades. These variables were more conceptually defensible than the NUEA or other formulae typically used to measure 'outcomes'. It was hypothesized that when students had to wait longer for the return of their assignments in the first quarter of the course, completion rate would be lower, but this would not happen after the course was half over. When students were late submitting assignments, it was expected that their completion rate would be lower than those submitting on time. It was found that turnaround had a significant association with completion rate throughout the course. Deviation, that is, delays in submitting assignments, was also related to completion. Each of the four variables had significantly different associations with programme outcome. The measures employed here can be used elsewhere as the data that comprise them are found in the records of most distance education programmes. This should facilitate research in distance education and provide practitioners with a way to monitor programmes.
Additional file 4 of Interfering with the expression of EEF1D gene enhances the sensitivity of ovarian cancer cells to cisplatin
Creators: name: Xu, Qia
name: Liu, Yun
name: Wang, Shenyi
name: Wang, Jing
name: Liu, Liwei
name: Xu, Yin
name: Qin, Yide
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Computational Biology

description: Additional file 4: Table S1. The DNA sequences of EEF1D shRNA and scrambled shRNA.
Microstructural characterization of phospholipid membranes and study of their interaction with peptides and proteins.
Creators: name: Vitiello, Giuseppe
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: In the present thesis, a wide structural and functional study on biomembranes is presented. The research has been focused on the micro- and mesostructure of phospholipid bilayers and on their interactions with different peptides which are involved in important biological process. Particularly, the role of lipid composition and self-organization in regulating the membrane biophysical properties has been investigated.
In particular, the experimental study is aimed to contribute to the analysis of the fine interplay between lipids and proteins/peptides in regulating processes involving biomembranes. The experimental work has been divided in two parts. In the former one, the attention has been focused on the formulation and the contemporary physico-chemical characterization of biomimicking lipid systems, as liposomes and supported lipid bilayers. Different classes of lipids were considered, incluiding zwitterionic and anionic, mono- and bichained, mono-, bi- and polyunsaturated phospholipids. Cholesterol and sphingolipids were also used in order to discriminate the effect of lipid composition in modulating the microstructural properties of lipid bilayers and their mesoscopic organization. In the latter part of the research, the interaction of these lipid systems with peptides deriving from different viral glycoproteins as well as from the A peptide was analyzed.
The whole investigation was realized by a combined experimental approach in which many physico-chemical techniques were used in order to obtain a wide description of the systems structure and behavior. In particular, Electron Spin Resonance (ESR) spectroscopy and Neutron Reflectivity (NR) have provided information about the lipid ordering and dynamics in the bilayer, while spectrofluorimetry and circular dichroism (CD) measurements have allowed the direct monitoring of the peptides behavior in the presence of membrane environment. Finally, Dynamic Light Scattering (DLS) and Small Angle Neutron Scattering (SANS) experiments have permitted a mesoscopic analysis of the different lipid supramolecular aggregates.
Vector Meson Exchange and Radiative Nonleptonic Kaon Decays In ChPT
Creators: name: Li, Liuji
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: ChPT is a powerful tool to study low energy pseudoscalar mesons physics. After a short introduction to ChPT in chapter 1 and its application to radiative nonleptonic Kaon decays in chapter 2, we studied the contribution of vector meson exchang  to the speciﬁc decay $K_S\rightarrow \pi^0 \pi^0 \gamma \gamma$. We fixed two coupling coefficients of $\mathcal{O}(p^6)$ weak effective chiral Lagrangian by using Bose symmetry, gauge symmetry and two bound equations got from experiment NA48. We show that vector meson exchange in weak sector is dominant at $\mathcal{O}(p^6)$, and its contribution cancels the biggest contribution at $\mathcal{O}(p^4)$ about 60%.
Additional file 2 of Assessing the capabilities of 2D fluorescence monitoring in microtiter plates with data-driven modeling for secondary substrate limitation experiments of Hansenula polymorpha
Creators: name: Berg, Christoph
name: Herbst, Laura
name: Gremm, Lisa
name: Ihling, Nina
name: Paquet-Durand, Olivier
name: Hitzmann, Bernd
name: Büchs, Jochen
Publisher: name: figshare
Year: 2024
Subjects: subject: Space Science
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 2: Table S1. Absolute and relative RMSE of calibration and prediction for PLS models of glycerol, CDW, and pH-value. Results are shown for the experiments of this study and the previous study for glycerol variation [41]. The RMSEs for calibration and prediction are shown for the shortest available sampling interval (RMSECal,full, RMSEPred,full). The relative RMSE, shown in brackets, is calculated based on the offline parameter range for the respective experiment.
Lidar study of high density aerosol clouds:
the Aerosol Multi-wavelength Polarization Lidar Experiment
Creators: name: Pisani, Gianluca
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: The lidar technique has demonstrated to be one of the best  tool to measure and monitor optical parameters of the atmosphere. It can be used, in particular, to evaluate optical and micro-physical properties with high spatial and temporal resolution. The presented study is devoted to investigate the possibility to implement an innovative system for the 4D mapping of the atmosphere. This need derives from the observation that sometimes (in presence of high density layers) the traditional instruments cannot follow the dynamic of signals. The experiments carried out with different typology of lidar instruments have finally led to consider as the best solution the adoption of a high repetition rate laser as transmitter. Interesting applications of this new lidar configuration here presented are the monitoring of volcanic plumes and high pollution aerosol layers. Moreover, results of experimental activities concerning the measurements on volcanic plumes are reported. In fact, in April-May 2010 the Napoli EARLINET lidar station was involved in the monitoring of the Eyjafjallajökull ash cloud. Afterwards, in the framework of a scientific collaboration with National Institute of Geophysics and Volcanology, a portable lidar system was mounted on the slope of Mt. Etna to study the possibility to install a permanent lidar station. Finally, preliminary results from the new lidar (named AMPLE) apparatus are shown.
Low-Level Quantification of Cefixime and Cefdinir in Human Plasma Using Ultrasound-and Magnetic-Assisted Dispersive Micro-Solid-Phase Extraction (MSPE) Based upon Carbon Quantum Dots (CQDs) Functionalized with Magnetite/Zeolitic Imidazolate Framework 71/Polypyrrole Combined with High-Performance Liquid Chromatography (HPLC)
Creators: name: Mortazavi, Elnaz Nakhostin
name: Zeeb, Mohsen
name: Homami, Seyed Saied
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified

description: A promising and reusable nanohybrid based on carbon quantum dots immobilized with Fe3O4/zeolitic imidazolate framework-71/polypyrrole (CQD/Fe3O4/ZIF-71/PPy) was fabricated as a sorbent for ultrasound-and magnetic-assisted dispersive micro-solid-phase extraction (US-M-A-DMSPE) followed by high-performance liquid chromatography with ultraviolet detection (HPLC-UV) for simultaneous trace determination of cefixime (CFX) and cefdinir (CFD) in human plasma. In order to improve the contact between the analyte and the sorbent, the surface of the CQDs was modified by individual materials involving zeolitic imidazolate framework and polypyrrole via an in-situ synthesis of ZIF-71 followed by oxidative polymerization of pyrrole. The structure of the prepared sorbent was characterized by x-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Under the optimized conditions, the nanosorbent provided high adsorption and selectivity toward the analytes. The limits of detection for CFX and CFD were 0.15 and 0.04 ng mL−1, respectively. The coefficients of determination (r2) were between 0.990 and 0.993, with dynamic ranges of 0.5–1750.0 and 0.2–1500.0 ng mL−1. The method was used for quantifying CFX and CFD in plasma samples to evaluate the pharmacokinetic aspects, including the half-life (T½), the time to reach the maximum concentration (Tmax), the maximum plasma concentration (Cmax), area under the curve (AUC0-24) and area under the curve at infinite time (AUC0-∞). Reliable reproducibility as the intra- assay (≤ 6.3%) and inter-assay (≤ 8.7%) together with reasonable accuracy (≤ 8.8%) were obtained.
MICROBIOTA INTESTINALE,  ENTEROORMONI, ALCUNE CITOKINE PRO-INFIAMMATORIE  IN DIFFERENTI CONDIZIONI NUTRIZIONALI   (INFLUENZA SU ALCUNI PARAMETRI CLINICI, BIOCHIMICI E FUNZIONALI)
Creators: name: Del Piano, Concetta
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: Il nostro studio si propone di valutare le possibili correlazioni esistenti tra  gli Acidi Grassi a Catena Corta fecali (SCFA) prodotti dal microbiota intestinale, la struttura epatica valutata con ultrasonografia, alcuni parametri espressione del metabolismo, alcuni enterormoni e citochine, in 4 gruppi di pazienti differenti per lo stato nutrizionale ed in un gruppo controllo.
Charm and beauty in the deconfined plasma from quenched lattice QCD
Creators: name: Ding, Heng-Tong
name: Kaczmarek, Olaf
name: Lorenz, Anna-Lena
name: Ohno, Hiroshi
name: Sandmeyer, Hauke
name: Shu, Hai-Tao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present continuum extrapolated results of charmonium and bottomonium correlators in the vector channel at several temperatures below and above $T_c$. The continuum extrapolation jointly performed with the interpolations to have physical values of $J/ψ$ and $Υ$ masses in the confined phase is based on calculations on several large quenched isotropic lattices using clover-improved Wilson valence fermions carrying different quark masses. The extrapolated lattice correlators are confronted with perturbation theory results incorporating resummed thermal effects around the threshold from pNRQCD and vacuum asymptotics above the threshold. An additional transport peak is modelled below the threshold allowing for an estimate of the diffusion coefficients for charm and bottom quarks. We find that charmonium correlators in the vector channel can be well reproduced by perturbative spectral functions above $T_c$ where no resonance peaks for $J/ψ$ are needed at and above 1.1 $T_c$, while for bottomonium correlators a resonance peak for $Υ$ is still needed up to 1.5 $T_c$. By analyzing the transport contribution to the correlators we find that the drag coefficient of a charm quark is larger than that of a bottom quark.
description: published version
Characterization of Pepper Ripeness in the Field Using Hyperspectral Imaging (HSI) with Back Propagation (BP) Neural Network and Kernel Based Extreme Learning Machine (KELM) Models
Creators: name: Wu, Xuejun
name: Wu, Xuemei
name: Huang, Huacheng
name: Zhang, Fugui
name: Wen, Yuxin
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Neuroscience
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified

description: Due to the economic differences of chili peppers at different maturity levels and the absence of differentiation of maturity in existing harvesting processes, it is crucial to accurately identify the maturity during harvesting for improving economic benefits. This paper investigated pepper maturity recognition models using hyperspectral technology to realize intelligent pepper harvesting with high accuracy and monitor maturity. Hyperspectral data (400–1000 nm) for field line peppers were collected, preprocessed using normalization, Savitzky-Golay convolutional smoothing, and standard normal variable transformation and subsequently used to train back propagation neural network (BP) and kernel based extreme learning machine (KELM) models. Principal component analysis (PCA) was used to reduce data dimensionality and identify characteristic spectral wavelengths for pepper maturity at 862.2, 676.9, 578.1, and 980.7 nm; and BP, PCA-BP, KELM, and PCA-KELM models were subsequently established. The precision for the KELM and PCA-KELM models (99.5% and 97.3%, respectively) was superior to the other two models; however, the PCA-KELM model used only four of the feature wavelengths as inputs, hence it required only 1/44 the data compared with the KELM model. Thus, the PCA-KELM model achieved high recognition accuracy and training speed, offering an effective method to discriminate pepper ripeness based on hyperspectral features.
A Holographic Dual of Bjorken Flow
Creators: name: Kinoshita, Shunichiro
name: Mukohyama, Shinji
name: Nakamura, Shin
name: Oda, Kin-ya
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose a consistent setup for a holographic dual of Bjorken flow of strongly coupled large-Nc N=4 SYM-theory plasma. We employ Eddington-Finkelstein type coordinates for the dual geometry, and we propose a late-time expansion there. We construct the dual geometry order by order, and we show that the transport coefficients are determined by the regularity of the geometry. We also show that the dual geometry has an apparent horizon hence an event horizon, which covers the singularity at the origin. We prove that the dual geometry is regular at all orders under an appropriate choice of the transport coefficients. Our model is a concrete well-defined example of time-dependent AdS/CFT.
description: 50 pages. v2: typos corrected, a reference added
Anisotropic Multi-layer Elliptical Waveguides Incorporating Graphene Layers: A Novel Analytical Model
Creators: name: Heydari, Mohammad Bagher
name: Samiei, Mohammad Hashem Vadjed
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: This article aims to propose a novel analytical model for anisotropic multi-layer elliptical structures incorporating graphene layers. The multi-layer structure is formed of various magnetic materials. An external magnetic bias has been applied in the axial direction. A graphene layer, with isotropic surface conductivity, has been sandwiched between two adjacent anisotropic materials. A novel matrix representation has been derived to find the propagation parameters of the multi-layer structure. Two exemplary important cases of the proposed general structure, as waveguides, have been investigated to show, first the validity of our proposed analytical model, and second, the richness of the general structure. The analytical and simulation results show an excellent agreement. A very large value of the figure of merit (FOM), e.g. FOM=110, is achieved for the second structure for the chemical potential and external magnetic bias of 0.9 ev and 1T, respectively. Our general structure and its analytical model can be exploited to design innovative THz devices such as absorbers, couplers, and cloaks.
description: This is a pre-print version of an article published in IEEE Transactions on Magnetics. The final authenticated version is available online at: https://doi.org/10.1109/TMAG.2020.3025502
Pressure-induced Superconductivity in CaLi2
Creators: name: Matsuoka, T.
name: Debessai, M.
name: Hamlin, J. J.
name: Gangopadhyay, A. K.
name: Schilling, J. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A search for superconductivity has been carried out on the hexagonal polymorph of Laves-phase CaLi2, a compound for which Feng, Ashcroft, and Hoffmann predict highly anomalous behavior under pressure. No superconductivity is observed above 1.10 K at ambient pressure. However, high-pressure ac susceptibility and electrical resistivity studies to 81 GPa reveal bulk superconductivity in CaLi2 at temperatures as high as 13 K. The normal-state resistivity shows a dramatic increase with pressure.
description: bulk superconductivity in CaLi2 now confirmed
Effective Constraints for Quantum Systems
Creators: name: Bojowald, Martin
name: Sandhoefer, Barbara
name: Skirzewski, Aureliano
name: Tsobanjan, Artur
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: An effective formalism for quantum constrained systems is presented which allows manageable derivations of solutions and observables, including a treatment of physical reality conditions without requiring full knowledge of the physical inner product. Instead of a state equation from a constraint operator, an infinite system of constraint functions on the quantum phase space of expectation values and moments of states is used. The examples of linear constraints as well as the free non-relativistic particle in parameterized form illustrate how standard problems of constrained systems can be dealt with in this framework.
description: 40 pages
Enhanced Beam Deflection in Bent Crystals using Multiple Volume Reflection
Creators: name: Breese, M B H
name: Biryukov, V M
Publisher: name: arXiv
Year: 2007
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: This paper presents simulations of the trajectories of high-energy ions through several bent crystal layers. At certain layer alignments volume reflection occurs from each layer and the resultant multiple volume reflection angle is correspondingly increased, along with the range of entrance angles over which ions undergo volume reflection. Another feature is that the range of entrance angles for which bent crystal channeling occurs is also increased in passing through several bent layers. The use of several bent crystal layers to produce multiple volume reflection provides an alternative approach to the design of a space shield or radiation protection at accelerators based on bent crystals.
description: Submiitted to Nuclear Instruments and Methods B
Heat transport in liquid water from first-principles and deep-neural-network simulations
Creators: name: Tisi, Davide
name: Zhang, Linfeng
name: Bertossa, Riccardo
name: Wang, Han
name: Car, Roberto
name: Baroni, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We compute the thermal conductivity of water within linear response theory from equilibrium molecular dynamics simulations, by adopting two different approaches. In one, the potential energy surface (PES) is derived on the fly from the electronic ground state of density functional theory (DFT) and the corresponding analytical expression is used for the energy flux. In the other, the PES is represented by a deep neural network (DNN) trained on DFT data, whereby the PES has an explicit local decomposition and the energy flux takes a particularly simple expression. By virtue of a gauge invariance principle, established by Marcolongo, Umari, and Baroni, the two approaches should be equivalent if the PES were reproduced accurately by the DNN model. We test this hypothesis by calculating the thermal conductivity, at the GGA (PBE) level of theory, using the direct formulation and its DNN proxy, finding that both approaches yield the same conductivity, in excess of the experimental value by approximately 60%. Besides being numerically much more efficient than its direct DFT counterpart, the DNN scheme has the advantage of being easily applicable to more sophisticated DFT approximations, such as meta-GGA and hybrid functionals, for which it would be hard to derive analytically the expression of the energy flux. We find in this way, that a DNN model, trained on meta-GGA (SCAN) data, reduce the deviation from experiment of the predicted thermal conductivity by about 50%, leaving the question open as to whether the residual error is due to deficiencies of the functional, to a neglect of nuclear quantum effects in the atomic dynamics, or, likely, to a combination of the two.
Optimal Control Theory for Continuous Variable Quantum Gates
Creators: name: Wu, Rebing
name: Chakrabarti, Raj
name: Rabitz, Herschel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We apply the methodology of optimal control theory to the problem of implementing quantum gates in continuous variable systems with quadratic Hamiltonians. We demonstrate that it is possible to define a fidelity measure for continuous variable (CV) gate optimization that is devoid of traps, such that the search for optimal control fields using local algorithms will not be hindered. The optimal control of several quantum computing gates, as well as that of algorithms composed of these primitives, is investigated using several typical physical models and compared for discrete and continuous quantum systems. Numerical simulations indicate that the optimization of generic CV quantum gates is inherently more expensive than that of generic discrete variable quantum gates, and that the exact-time controllability of CV systems plays an important role in determining the maximum achievable gate fidelity. The resulting optimal control fields typically display more complicated Fourier spectra that suggest a richer variety of possible control mechanisms. Moreover, the ability to control interactions between qunits is important for delimiting the total control fluence. The comparative ability of current experimental protocols to implement such time-dependent controls may help determine which physical incarnations of CV quantum information processing will be the easiest to implement with optimal fidelity.
description: 39 pages, 11 figures
Graphene-silicon device for visible and infrared photodetection
Creators: name: Pelella, Aniello
name: Grillo, Alessandro
name: Faella, Enver
name: Luongo, Giuseppe
name: Askari, Mohammad Bagher
name: Di Bartolomeo, Antonio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The fabrication of graphene-silicon (Gr-Si) junction inolves the formation of a parallel metal-insulator-semiconductor (MIS) structure, which is often disregarded but plays an important role in the optoelectronic properties of the device. In this work, the transfer of graphene onto a patterned n-type Si substrate, covered by $Si_3N_4$, produces a Gr-Si device in which the parallel MIS consists of a $Gr-Si_3N_4-Si$ structure surrounding the Gr-Si junction. The Gr-Si device exhibits rectifying behavior with a rectification ratio up to $10^4$. The investigation of its temperature behavior is necessary to accurately estimate the Schottky barrier height at zero bias, $ϕ_{b0}=0.24 eV$, the effective Richardson's constant, $A^*=7 \cdot 10^{-10} AK^{-2}cm^{-2}$, and the diode ideality factor n=2.66 of the Gr-Si junction. The device is operated as a photodetector in both photocurrent and photovoltage mode in the visible and infrared (IR) spectral regions. A responsivity up to 350 mA/W and external quantum efficiency (EQE) up to 75% is achieved in the 500-1200 nm wavelength range. A decrease of responsivity to 0.4 mA/W and EQE to 0.03% is observed above 1200 nm, that is in the IR region beyond the silicon optical bandgap, in which photoexcitation is driven by graphene. Finally, a model based on two back-to-back diodes, one for the Gr-Si junction. the other for the $Gr-Si_3N_4-Si$ MIS structure, is proposed to explain the electrical behavior of the Gr-Si device.
A citation analysis of "Adult education quarterly" 1971-1986
Creators: name: Kavanagh, Richard Owen
Publisher: name: University of British Columbia
Year: 2010

description: Adult education has long been described as an emerging discipline, but there has been little empirical study of its emergence. This study examined 'emergence' by monitoring that particular knowledge base which is unique to adult education. Studies concerned with the theory and practice of adult education are a quantifiable indicator of unique knowledge about adult education. Evidence that researchers in adult education increasingly cite the work of other researchers in adult education would support the contention that the body of knowledge in adult education is growing. The articles published in Adult Education Quarterly between 1971 and 1986 were analyzed using citation analysis methodology. The frequency of citation to previous adult education studies (primary literature) as opposed to citation of studies peripheral to an adult education context (secondary literature) was determined. Distinguishing between citation categories was carried out by analyzing each title cited. The phenomenon of concern in the cited article was interpreted from the words used in the title, and coded dichotomously as 'primary literature' or 'secondary literature'. Each coded item was then recorded under named authors; thus, the cited author was credited for total frequency cited along with the coded category of writing (author of primary literature or author of secondary literature). Reliability measures performed for intra-judge consistency (recoding data), and inter-judge agreement (independent coding of data) resulted in differences in coding of less than four percent for the former, and nine percent with the latter. Validity of the procedures used in coding cited authors was tested by comparing results obtained to a 'standard'. 'Independent experts' were asked to identify from a list of the twenty most cited authors from each four volume period, those who were "primarily known for their adult education activities." The study's coding outcome of these authors compared with the expert's 'standard' resulted in greater than 75 percent agreement. With 4700 citations classified, it was found that a rising percentage of citations were to the "authors of primary literature"; from 41 percent of all citations in the first half of the study period (1971-1978), to 46 percent in the last half (1979-1986). A further breakdown showed the percentage of citations to "primary literature journals" also increasing; from 31 percent of all journals cited in '1971-1978' to 39 percent in '1979-1986'. As the scope of literature analyzed was exclusively from one North American journal, results need to be regarded with this limitation in mind. However, the empirical evidence of an increasing 'primary literature' base in adult education research suggests emergence of the field. Implications for future research are discussed in light of this and previous studies.
Controllable finite ultra-narrow quality-factor peak in a perturbed Dirac-cone band structure of a photonic crystal slab
Creators: name: Song, Alex Y.
name: Kalapala, Akhil Raj Kumar
name: Gibson, Ricky
name: Reilly, Kevin James
name: Rotter, Thomas
name: Addamane, Sadhvikas
name: Wang, Haiwen
name: Guo, Cheng
name: Balakrishnan, Ganesh
name: Bedford, Robert
name: Zhou, Weidong
name: Fan, Shanhui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that by using a perturbed photonic Dirac-cone, one can realize ultra-narrow and finite Q-factor peak in the wavevector space, with both the peak value and the width separately tunable. We also discuss a lower bound in the minimal viable width given a peak Q-value while maintaining sufficient Q differentiation among modes. The strong angular and frequency Q-selection finds applications in optical devices where strong angle- and frequency-selection is needed.
description: 6 pages, 4 figures
Template for a "Research Footprint": An overview of a researcher's online academic presence
Creators: name: Deutz, Daniella Bayle
name: Wien, Charlotte
Publisher: name: Zenodo
Year: 2019
Subjects: h-index, metrics, scopus, WoS, PURE

description: What do you look like as a researcher, when someone external to your institute looks you up online?

A "Research Footprint" provides a researcher with an immediate and visual overview of their online academic presence. We show what the researcher's metrics look like on the most widely used citation databases: Scopus, Web of Science (WoS) and Google Scholar. We limit the Research Footprint to the most basic personal metrics: Number of publications, number of open access publications, number of citations, times cited per year, and the h-index. We check whether the researcher has created and maintained the most important author identifiers: ORCID, ScopusID and ResearcherID (Publons), and linked them to our institutional repository based on PURE.

We collect all this data as a kicking off point for a 1-on-1 discussion with the researcher. In that discussion we go through the importance of Author Identifiers and check whether all their publications are properly claimed on Scopus, WoS and Google Scholar. Finally, we give them the tools to maintain their profiles on their own to ensure that when external parties look them up, they find an accurate representation of the researcher's publication data.

These are the template files we developed at the University of Southern Denmark to generate the Research Footprint. They include a Disclaimer and a GDPR statement. The publication data can be collected in the provided Excel file and then copied over to the Word file.
Anisotropic plasmons in a two-dimensional electron gas with spin-orbit interaction
Creators: name: Badalyan, S. M.
name: Matos-Abiague, A.
name: Vignale, G.
name: Fabian, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-orbit coupling induced anisotropies of plasmon dynamics are investigated in two-dimensional semiconductor structures. The interplay of the linear Bychkov-Rashba and Dresselhaus spin-orbit interactions drastically affects the plasmon spectrum: the dynamical structure factor exhibits variations over several decades, prohibiting plasmon propagation in specific directions. While this plasmon filtering makes the presence of spin-orbit coupling in plasmon dynamics observable, it also offers a control tool for plasmonic devices. Remarkably, if the strengths of the two interactions are equal, not only the anisotropy, but all the traces of the linear spin-orbit coupling in the collective response disappear.
description: 4 figures