bluuebunny/crossref_metadata_2025_split huggingface dataset:
Frustrated quantum magnetism with Bose gases in triangular optical lattices at negative absolute temperatures
Authors: Yamamoto Daisuke , Fukuhara Takeshi , Danshita Ippei 
Published: March 2020

AbstractQuantum antiferromagnets with geometrical frustration exhibit rich many-body physics but are hard to simulate by means of classical computers. Although quantum-simulation studies for analyzing such systems are thus desirable, they are still limited to high-temperature regions, where interesting quantum effects are smeared out. Here we propose a feasible protocol to perform analog quantum simulation of frustrated antiferromagnetism with strong quantum fluctuations by using ultracold Bose gases in optical lattices at negative absolute temperatures. Specifically, we show from numerical simulations that the time evolution of a negative-temperature state subjected to a slow sweep of the hopping energy simulates quantum phase transitions of a frustrated Bose–Hubbard model with sign-inverted hoppings. Moreover, we quantitatively predict the phase boundary between the frustrated superfluid and Mott-insulator phases for triangular lattices with hopping anisotropy, which serves as a benchmark for quantum simulation.
Distributed PV generation estimation using multi‐rate and event‐driven Kalman kriging filter
Authors: Alam SM Shafiul , Florita Anthony R. , Hodge Bri‐Mathias 
Published: March 2020

The ever‐growing penetration of cost‐effective photovoltaic (PV) panels within the distribution grid requires a robust and efficient method for PV system monitoring. Especially, the geographical proximity of PV panels can play an important role in lowering the dimension of measurements required for full system observability. Furthermore, the direct impact of variable cloud formation and uncertain propagation necessitates the development and validation of a spatiotemporal model. Accordingly, this study presents the modelling and validation of the spatiotemporal variability of solar power indices at 1 minute resolution for the scale of a residential neighbourhood. The spatiotemporal model is then applied to a Multi‐Rate and Event‐DRIven Kalman Kriging (MREDRIKK) filter to dynamically estimate behind‐the‐meter PV generation. The Kriging step exploits spatial correlations to estimate PV power output at locations from where measurements are unobserved. The multi‐rate feature of the MREDRIKK filter enables the sampling of measurements at a rate much lower than the temporal dynamics of the associated states. A comprehensive study is undertaken to investigate the effect of multi‐rate and event‐driven measurement updates on the performance of the MREDRIKK filter. In addition, the superior performance of MREDRIKK filter is represented as compared to the persistence method irrespective of the observation size.
Tracking the state transitions in changing-look active galactic nuclei through their polarized-light echoes
Authors: Marin F. , Hutsemékers D. 
Published: March 2020

Context.Variations in the mass accretion rate appear to be responsible for the rapid transitions in spectral type that are observed in increasingly more active galactic nuclei (AGNs). These objects are now labeled “changing-look” AGNs and are key objects for understanding the physics of accretion onto supermassive black holes.Aims.We aim to complement the analysis and interpretation of changing-look AGNs by modeling the polarization variations that can be observed, in particular, polarized-light echoes.Methods.We built a complex and representative model of an AGN and its host galaxy and ran radiative transfer simulations to obtain realistic time-dependent polarization signatures of changing-look objects. Based on actual data, we allowed the system to become several times fainter or brighter within a few years, assuming a rapid change in accretion rate.Results.We obtain time-dependent polarization signatures of distant high-luminosity (quasars) and nearby low-luminosity (Seyferts) changing-look AGNs for a representative set of inclinations. We predict the evolution of the continuum polarization for future polarimetric campaigns with the goal to better understand the physics at work in these objects. We also investigate highly inclined AGNs that experience strong accretion rate variations without appearing to change state. We apply our modeling to Mrk 1018, the best-documented case of a changing-look AGN, and predict a variation in its polarization after the recent dimming of its continuum.Conclusions.We demonstrate that polarization monitoring campaigns that cover the transitions that are observed in changing-look AGNs might bring crucial information on the geometry and composition of all the reprocessing regions within the nucleus. In particular, specific features in the time variation of the polarization position angle can provide a new and efficient method for determining AGN inclinations.
Low Level Continuous Heat Wraps can Increase the Efficiency of Transcutaneous Electrical Nerve Stimulation for Pain Management
Authors: Petrofsky Jerrold , Laymon Michael , Lee Haneul 
Published: March 2020

AbstractBoth transcutaneous electrical nerve stimulation and superficial heat have been used for pain management. While heat has been shown to have a beneficial effect on pain, transcutaneous electrical nerve stimulation remains controversial. The purpose of the present study was to see if heat, when added to transcutaneous electrical nerve stimulation, would provide more consistent relief. A total of 180 subjects participated in this study and were randomly divided into 12 groups. Low level continuous heat was applied while electrical stimulation was applied at 2 intensities, 2 frequencies and with 2 waveforms for 4 h. Outcome measures were subjective pain scale, range of motion of the back and skin blood flow of the back. The control groups had no significant difference in pain, range of motion or skin blood flow comparing the data at the beginning and 4 h after (p> 0.05). There was a small reduction in pain with transcutaneous electrical nerve stimulation alone while all other groups had a significant improvement in range of motion free of pain, reduction in pain, and increase in skin blood flow from the beginning to the end of the 4-hour period. Since transcutaneous electrical nerve stimulation with low level continuous heat showed better outcomes then transcutaneous electrical nerve stimulation alone or low level continuous heat alone, combining the 2 interventions seems to offer better outcomes for pain management for health care professionals.
Acute Cerebellitis and Atypical Posterior Reversible Encephalopathy Syndrome Associated with Methadone Intoxication
Authors: Salloum Shafee , Reyes Irma , Ey Elizabeth , Mayne Dustin , White Kristen 
Published: March 2020

AbstractWe report a case of a 9-year-old boy who presented with altered mental status and ataxia following 3 days of vomiting. Shortly after arrival to our emergency department, he declined and required intubation. The following day, he recovered and was successfully extubated. He was found to be positive for methadone on his urine drug screen. Brain imaging demonstrated a pattern of acute cerebellitis. Following extubation, the patient returned to his normal mental status; however, he began to have consistently elevated blood pressure and bradycardia and subsequent brain imaging showed supratentorial changes that were related to atypical posterior reversible encephalopathy syndrome. Through medical management including high-dose steroids and antihypertensive medications, the patient's blood pressure normalized, and he was eventually discharged home without further complications.
Iatrogenic Radial Arteriovenous Fistula Secondary to Transradial Coronary Angiography: A Case Report
Authors: V. Satish Kumar Rao , Bhyravavajhala Srinivas , Narayanan Ramakrishna , Yerram Sreekanth 
Published: March 2020

AbstractTransradial access is the commonly followed route for performing percutaneous coronary diagnostic and angioplasty interventions. Transradial access has drastically decreased the vascular access site complications when compared with the transfemoral access. Arteriovenous fistula developing at the transradial access site is one of the rare complications. The risk factors and the mechanism of development are not entirely known. We present a rare case of a 63-year-old female developing radiocephalic fistula a few days after transradial coronary angiography and discuss management.The transradial route is preferred for cardiovascular interventions. Complications arising out of this are rare even though this route is widely used. Arteriovenous fistula is one of the rare complications, and the mechanisms causing it are not always clearly evident. This report will elaborate on the possible causes and steps to prevent this complication and help in managing once it occurs.
Virion-incorporated PSGL-1 and CD43 inhibit both cell-free infection and transinfection of HIV-1 by preventing virus–cell binding
Authors: Murakami Tomoyuki , Carmona Nancy , Ono Akira 
Published: March 2020

SignificanceNo host-encoded restriction factor identified thus far inhibits the first step of HIV-1 infection: virus–cell attachment. Here we demonstrate that virion-incorporated host transmembrane proteins PSGL-1 and CD43 inhibit attachment of HIV-1 particles to target cells. This inhibition of virus attachment occurs regardless of molecules mediating virus–cell binding and leads to inhibition of both cell-free infection and bystander cell-mediated transinfection. We also show that coclustering of HIV-1 structural protein Gag with PSGL-1 and subsequent progeny virion release contribute to depletion of PSGL-1 from an infected cell surface. Our study reveals an anti–HIV-1 mechanism in which virion-incorporated host transmembrane proteins block virus attachment. In addition, we report a previously unidentified role for Gag in viral down-regulation of antiviral proteins.
The impact of long-range dispersal on gene surfing
Authors: Paulose Jayson , Hallatschek Oskar 
Published: March 2020

Significance
The expansion of a population into a new area occurs frequently in nature. Examples include epidemic outbreaks, invasions by nonnative species, and colonization of regions rendered hospitable by climate change. Many expansions are driven by long-range migration of organisms or seeds borne by air, water, or traveling hosts. These events amplify the impact of random chance on genetic variation: A lucky individual which reaches unoccupied territory first can have more descendants than subsequent arrivals, even without advantageous mutations. We model the patterns of variation generated by random long-range migration events and study their effects on genetic diversity. Our results elucidate the evolutionary consequences of long-range dispersal and are important for correctly interpreting sources of variation in geographically structured genomic data.
Turkish translations ofLolita
Authors: Denissova Nilüfer 
Published: March 2020

AbstractThis paper presents the results of research on translations of Nabokov’sLolitainto Turkish. Two of the translations were published under different names, but a closer look reveals that these target texts are identical, except for a difference in the character Lolita’s age; she is shown to be twelve in one translation and fourteen in the other. Apart from this, images of body and sex in the text are, to a certain degree, expurgated. Based on the data, I discuss the issues of authorship and (self) censorship in translation, as well as traditional cultural norms and the position of translator when she chooses to adapt to those norms or to question them.
Who wants to be a self-driving car?
Authors: Lee Joey , Groß Benedikt , Reimann Raphael 
Published: March 2020

Abstract
Self-driving cars and autonomous transportation systems are projected to create radical societal changes, yet public
understanding and trust of self-driving cars and autonomous systems is limited. The authors present a new mixed-reality experience designed
to provide its users with insights into the ways that self-driving cars operate. A single-person vehicle equipped with sensors provides its
users with data driven visual feedback in a virtual reality headset to navigate in physical space. The authors explore how immersive
experiences might provide ‘conceptual affordances’ that lower the entry barrier for diverse audiences to discuss complex topics.
Pragmatic evaluation of The BMJ’s visual abstracts
Authors: Stahl-Timmins Will , Black Jonathan , Simpson Paul 
Published: March 2020

Abstract
The British Medical Journal has recently started making visual abstracts to summarise published research studies. These 1024 × 1024 px images give a quick overview of a trial’s participants, design, and key findings. These visual abstracts are designed to help busy health professionals and researchers get a quick overview of newly published research. The present article describes simple pragmatic evaluations of these visual abstracts: analysis of social media stats and an opportunistic reader survey. Our goals were to identify how useful our readers found this new visual format, and whether there were any improvements we could make. The social media stats were initially very promising. Longer term performance over several visual abstracts, however, was not as strong, suggesting a possible halo effect provided by the novelty of a new presentation format. The survey proved to be a quick and valuable way of getting feedback on the design of the initial template, and resulted in several design adjustments.
Finding evidence for a changing society
Authors: Ratia Maura 
Published: March 2020

Abstract
This chapter examines, with the help of collocation analysis, how
patients were viewed in medical texts from 1500 to 1800. Previous studies have suggested
that this period witnessed considerable changes in society. The field of medicine also
underwent major developments during this time, but linguistic analyses have been
lacking. Two corpora were used in the study: the Corpus of Early Modern English
Medical Texts and the Corpus of Late Modern English Medical
Texts, together totaling over 4.2 million words. The results indicate a
development from the patient as an object of various treatments and cures in the early
modern period to patient as experiencer in the late modern period. The
growing importance of hospitals and public health in the latter era also emerges from
the results.
Analyzing change in the American English amplifier system in the fiction
genre
Authors: Schweinberger Martin 
Published: March 2020

Abstract
This study examines the diachronic development of amplification of
adjectives in American English (AmE), specifically in the fiction section of the
Corpus of Historical American English (COHA). The results show that
amplifier use in attributive contexts remains stable, while, in predicative contexts,
so has increased significantly since the 1980s and has replaced
very as the dominant amplifier. This development contrasts with
ongoing change in other regional varieties of English where really,
rather than so, has become the dominant amplifier of adjectives during
the latter half of the 20th century. The results show that so and
very are semantically highly similar and that the increase in
so is mostly based on its co-occurrence with
good.
New developments in the simulation of Rutherford backscattering spectrometry in channeling mode using arbitrary atom structures
Authors: Jin Xin , Crocombette Jean-Paul , Djurabekova Flyura , Zhang Shuo , Nordlund Kai , Garrido Frédérico , Debelle Aurélien 
Published: March 2020

Abstract
As Rutherford backscattering spectrometry in channeling mode (RBS/C) is an efficient technique for characterizing crystallographic defects, its computational simulation has drawn attention over the past several decades. Recently, a RBS/C simulation code based on the binary collision approximation called Rutherford backscattering simulation in arbitrary defective crystals has been suggested and successfully applied to predict the RBS/C spectra from different damaged materials, whose structures were generated in high-dose ion irradiation atomistic simulations. In the present paper, we introduce new developments improving the flexibility of the developed software and its applicability to different types of materials. More precisely, we modified the algorithm describing the slowdown process of backscattered ions, added fitting parameters in the collision partner search routine, modified the routine taking into account target atom thermal vibrations and provided new descriptions of the ion beam divergence. As an example, the effect of the modifications on simulated RBS/C spectra is shown for an 〈011〉-oriented UO2 crystal analyzed with a 3.085 MeV He2+ ion beam. Some of these changes proved necessary to achieve satisfying agreement between simulations and experimental data. Similar observation was made for 〈001〉-oriented Si and 〈001〉-oriented GaAs crystals analyzed with a 1.4 MeV He+ ion beam. In these simulations, the modifications have also resulted in good agreement with experiment.
Blow-up profiles in quasilinear fully parabolic Keller–Segel systems
Authors: Fuest Mario 
Published: March 2020

Abstract
We examine finite-time blow-up solutions

to

in a ball

,

, where D and S generalize the functions

with

. We show that if

as well as

and

is a nonnegative, radially symmetric classical solution to (

) blowing up at

, then there exists a so-called blow-up profile

satisfying

Moreover, for all

with

we can find

such that

for all

.
Dynamics and topology of non-Hermitian elastic lattices with non-local feedback control interactions
Authors: Rosa Matheus I N , Ruzzene Massimo 
Published: March 2020

Abstract
We investigate non-Hermitian elastic lattices characterized by non-local feedback interactions. In one-dimensional lattices, proportional feedback produces non-reciprocity associated with complex dispersion relations characterized by gain and loss in opposite propagation directions. For non-local controls, such non-reciprocity occurs over multiple frequency bands characterized by opposite non-reciprocal behavior. The dispersion topology is investigated with focus on winding numbers and non-Hermitian skin effect, which manifests itself through bulk modes localized at the boundaries of finite lattices. In two-dimensional lattices, non-reciprocity is associated with directional wave amplification. Moreover, the combination of skin effect in two directions produces modes that are localized at the corners of finite two-dimensional lattices. Our results describe fundamental properties of non-Hermitian elastic lattices, and suggest new possibilities for the design of meta materials with novel functionalities related to selective wave filtering, amplification and localization. The considered non-local lattices also provide a platform for the investigation of topological phases of non-Hermitian systems.
Small-signal modeling and parameter extraction method for a multigate GaAs pHEMT switch
Authors: Luo Lin , Liu Jun , Wang Guofang , Wu Yuxing 
Published: March 2020

Abstract
This paper presents an accurate small-signal model for multi-gate GaAs pHEMTs in switching-mode. The extraction method for the proposed model is developed. A 2-gate switch structure is fabricated on a commercial 0.5 μm AlGaAs/GaAs pHEMT technology to verify the proposed model. Excellent agreement has been obtained between the measured and simulated results over a wide frequency range.
High performance GaN-based hybrid white micro-LEDs integrated with quantum-dots
Authors: Xu Feifan , Cen Xu , Liu Bin , Wang Danbei , Tao Tao , Zhi Ting , Wang Qi , Xie Zili , Zhou Yugang , Zheng Youdou , Zhang Rong 
Published: March 2020

Abstract
Hybrid white micro-pillar structure light emitting diodes (LEDs) have been manufacture utilizing blue micro-LEDs arrays integrated with 580 nm CIS ((CuInS2-ZnS)/ZnS) core/shell quantum dots. The fabricated hybrid white micro-LEDs have good electrical properties, which are manifested in relatively low turn-on voltage and reverse leakage current. High-quality hybrid white light emission has been demonstrated by the hybrid white micro-LEDs after a systemic optimization, in which the corresponding color coordinates are calculated to be (0.3303, 0.3501) and the calculated color temperature is 5596 K. This result indicates an effective way to achieve high-performance white LEDs and shows great promise in a large range of applications in the future including micro-displays, bioinstrumentation and visible light communication.
35 km amplifier-less four-level pulse amplitude modulation signals enabled by a 23 GHz ultrabroadband directly modulated laser
Authors: Xiao Yaoping , Liu Yu , Zhang Yiming , Bao Haotian , Zhu Ninghua 
Published: March 2020

Abstract
The 4-level pulse amplitude modulation (PAM4) based on an 23 GHz ultrabroadband directly modulated laser (DML) was proposed. We have experimentally demonstrated that based on intensity modulation and direct detection (IMDD) 56 Gbps per wavelength PAM4 signals transferred over 35 km standard single mode fiber (SSMF) without any optical amplification and we have achieved the bit error rate (BER) of the PAM4 transmission was under 2.9 × 10−4 by using feed forward equalization (FFE).
Warmer climate projections in EC-Earth3-Veg: the role of changes in the greenhouse gas concentrations from CMIP5 to CMIP6
Authors: Wyser Klaus , Kjellström Erik , Koenigk Torben , Martins Helena , Döscher Ralf 
Published: March 2020

Abstract
Climate projections for the 21st century for CMIP6 are warmer than those for CMIP5 despite nominally identical instantaneous radiative forcing. Many climate modeling groups attribute the stronger warming in the CMIP6 projections to the higher climate sensitivity of the new generation of climate models, but here we demonstrate that also changes in the forcing datasets can play an important role, in particular the prescribed concentrations of greenhouse gases (GHG) that are used to force the models. In the EC-Earth3-Veg model the effective radiative forcing (ERF) is reduced by 1.4 W m−2 when the GHG concentrations from SSP5-8.5 (used in CMIP6) are replaced by the GHG concentrations from RCP8.5 (used in CMIP5), and similar yet smaller reductions are seen for the SSP2-4.5/RCP4.5 and SSP1-2.6/RCP2.6 scenario pairs. From the reduced ERF we can estimate the temperature at the end of the century in a full climate simulation with the CMIP6 version of the EC-Earth model but using CMIP5 GHG concentrations instead. For the new SSP5-8.5 and SSP2-4.5 scenarios we find that 50% or more of the temperature increase from CMIP5 to CMIP6 at the end of the century is due to changes in the prescribed GHG concentrations. The implication is that CMIP5 and CMIP6 projections for the 21st century are difficult to compare with each other not only as models differ but also as the forcing conditions are not equal. Therefore, the communication of CMIP6 results to the impact, mitigation and adaptation communities has to be carefully formulated, taking into account the role of the updated GHG concentrations when interpreting the warmer climate projections for the 21st century.