bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tunable Optical Properties and Self-Assemblies of a Water-Soluble Perimidinium Imide Dye
Authors: Mahata Kingsuk , Roy Tirupati , Debnath Indraneel 
Published: July 2023

AbstractThe synthesis of unsymmetrically peri-annulated naphthalene dyes, perimidinium imides (PrIm), is reported. Compared with the symmetrical and popular analogous naphthalenediimide dyes, PrIm showed a red-shifted absorption maximum. The water-soluble dyes showed tunable self-assembly behaviors and optical properties. The dyes retain their photoluminescence properties in water.
Proton Bragg curve and energy reconstruction using an online scintillator stack detector
Authors: Istokskaia Valeriia , Lefebvre Benoit , Petringa Giada , Cirrone Pablo , Guarrera Mariacristina , Giuffrida Lorenzo , Versaci Roberto , Olšovcová Veronika , Margarone Daniele 
Published: July 2023

Real-time measurement and characterization of laser-driven proton beams have become crucial with the advent of high-repetition-rate laser acceleration. Common passive diagnostics such as radiochromic film (RCF) are not suitable for real-time operation due to time-consuming post-processing; therefore, a novel approach is needed. Various scintillator-based detectors have recently gained interest as real-time substitutes to RCF—thanks to their fast response for a wide range of dose deposition rates. This work introduces a compact, scalable, and cost-effective scintillator-based device for proton beam measurements in real-time suitable for the laser–plasma environment. An advanced signal processing technique was implemented based on detailed Monte Carlo simulations, enabling an accurate unfolding of the proton energy and the depth–dose deposition curve. The quenching effect was accounted for based on Birks’ law with the help of the Monte Carlo simulations. The detector was tested in a proof-of-principle experiment at a conventional cyclotron accelerating protons up to 35 MeV of energy. The signal comparison with a standard RCF stack was also performed during the test of the device, showing an excellent agreement between the two diagnostics. Such devices would be suitable for both conventional and laser-driven proton beam characterization.
Ethylene-induced improvement in photosynthetic performance of Zanthoxylum armatum under reoxygenation conditions
Authors: Wu Jiaojiao , Wang Jingyan , Wang Peiyun , Su Chengyi , Hui Wenkai , Gong Wei 
Published: July 2023

In this study, we evaluated the photosynthetic performance of Zanthoxylum armatum seedlings to test the tolerance to reoxygenation after waterlogging. The experiment included a control group without waterlogging (NW) and three reoxygenation groups with reoxygenation after 1 day (WR1), 2 days (WR2) and 3 days (WR3). Seedlings were pretreated with concentrations of 0, 200 and 400 μmol L−1 of ethylene. The results showed that reoxygenation after waterlogging for 1–3 days decreased photosynthetic pigments content, enzymes activity, stomatal conductance (Gs), net photosynthetic rate (Pn), transpiration rate (Tr) and water-use efficiency (WUE). However, pretreatment with ethylene increased photosynthetic pigments content, enzymes activity and gas exchange parameters under both NW and WR3 treatments. The chlorophyll fluorescence results showed that the maximum quantum yield of PSII (Fv/Fm) and actual photochemical efficiency of PSII (ΦPSII) remained no significant changes under the NW and WR1 treatments, while they were significantly reduced with an increase in waterlogging days followed by reoxygenation under WR2 and WR3 treatments. Exogenous ethylene inhibited Fv/Fm and the non-photochemical quenching coefficient (NPQ), while enhanced ΦPSII and electron transfer efficiency (ETR) under WR2 treatments. Moreover, the accumulation of exogenous ethylene reduced photosynthetic ability. These findings provide insights into the role of ethylene in enhancing the tolerance of Z. armatum to reoxygenation stress, which could help mitigate the impact of continued climate change.
The ‘Covid-19 presidential genre’
Authors: Mugumya Levis 
Published: July 2023

Abstract
This chapter examines the presidential addresses delivered by the Ugandan president during the Covid-19 lockdown. It invokes genre analysis to examine the nature of the rhetorical moves that characterised the Presidential statements. It also employs critical discourse analysis to examine the linguistic devices that the president invoked during the addresses. Focusing on the extempore narrative episodes emanating from 20 presidential addresses, the chapter explicates the nature of utterances (rebukes, warnings and reassurances) the President made. It demonstrates how the President not only invoked the war rhetoric, metaphors, and proverbs to sustain the attention of his audience but also to explain the science of the new pandemic, justify the continued lockdown and other restrictive measures, and rally support from the citizens.
Shambolic blunder
Authors: Holze Regina 
Published: July 2023

Abstract
During the Covid-19 pandemic, Great Britain’s Prime Minister Johnson had to admit the failure of his measures on several occasions and subsequently change policies. This paper analyses Johnson’s strategies of communicating failure, relying on a corpus of official statements and interviews dating from March 2020 to January 2021. Drawing on methods from corpus-assisted discourse analysis, his main strategies of communicating failure are analysed by identifying typical speech acts and classifying them according to Boin et al.’s accountability model (2017). Additionally, frequent frames are examined with relation to the narrative to which they contribute. Results show a tendency to avoid admitting policy failure and shirk responsibility, complemented by a common reference to the success of previous policies and the need for unity in crisis.
Formulations of risk and responsibility in COVID-19 contact tracing telephone
interactions in Flanders, Belgium
Authors: De Timmerman Romeo , Bafort Anne-Sophie , Van de Geuchte Sofie , Vandenbroucke Mieke , Slembrouck Stef 
Published: July 2023

Abstract
Government responses to the Covid-19 health crisis are composed
of recursively applied stages of risk calculation and management as necessary
processes in the containment of outbreaks. One of the most prominent forms of risk
management in Flanders was contact tracing. It occurs in three variants: (i)
the development and implementation of a smartphone-based contact tracing app, (ii)
regionally-organised contact tracing telephone conversations conducted through
commercially-contracted call centres, and (iii) home visiting by local field agents
of populations who are difficult to reach. This chapter focuses on (ii), due to its
prevalence, and is based on an interactional analysis of a corpus of 220 contact
tracing conversations with index patients that was compiled late 2020 and early
2021. The chapter opens with a discussion of the notions of “Risk Society” and
“responsibilisation” as relevant socio-cultural orientations in the current era of
globalized Late Modernity and “governmentality” as a discursive field. The
regionally-organised contact tracing telephone call can be characterized as a
large-scale, micro-level form of interactionally and dialogically-accomplished risk
management. The genre foregrounds the articulation of multiple dimensions of risk
and responsibility, situated at various levels of social organization and appeal.
The management of risk and responsibility intersects with the accomplishment of the
specific communicative functions of the genre. The contact tracer’s three-fold task
is to (i) gather private information about the index patient’s symptoms and their
contacts during a relevant time period; (ii) provide instructions about quarantine.
In addition, (iii) contact tracers are expected to sustain a caring and empathetic
stance during their interactions with index patients. In this respect, the contact
tracers’ responsibilities include their role as a representative of the government’s
risk-managing response to successive stages of the pandemic. The analysis
illustrates how various formulations of risk and responsibility interrelate with the
communicative goals and the specific interactional demands of contact tracing
telephone conversations.
Risk and responsibility in human-robot interaction
Authors: Fischer Kerstin 
Published: July 2023

Abstract
In this chapter, I argue that interaction researchers have a
large toolbox available to analyze the quality of current human-robot interactions,
allowing us to identify possible risks concerning the introduction of social robots
into our societies. I illustrate how interactional analyses can serve to evaluate
the quality of human-robot interactions on sample studies of an interview
interaction with Sophia the Robot and tutoring interactions of the iCub robot with a
focus on how the interaction partners take each other into account. The results
indicate potential risks even in seemingly enjoyable and tightly coordinated
human-robot interactions, which suggests that interaction researchers may want to
take responsibility for contributing to the risk assessment of introducing social
robots into our social spaces.
Word order in simple sentences of tri-lingual tri-modal deaf students*
Authors: Novogrodsky Rama , Stamp Rose , Shaban-Rabah Sabrin 
Published: July 2023

AbstractThis study explores word order patterns produced by deaf students who use Israeli Sign Language (ISL) and Arabic. Nineteen students participated in a sentence elicitation task in which they retold events portrayed in 24 short videos in three language conditions: signed ISL, spoken Palestinian Arabic and written Modern Standard Arabic. A control group of 19 hearing students was tested in the two Arabic conditions. Results showed that SVO word order was the most frequent in both groups, and in all three languages. SOV word order, which is common in ISL but ungrammatical in Arabic, was produced only by the deaf group. Finally, unique word orders, specific to the signed modality were produced only in the ISL condition. The findings suggest that deaf students are sensitive to the syntactic structures of each language they use and show natural cross-linguistic interaction in their language use.
Statistical analysis of discrete dislocation dynamics simulations: initial structures, cross-slip and microstructure evolution
Authors: Demirci Aytekin , Steinberger Dominik , Stricker Markus , Merkert Nina , Weygand Daniel , Sandfeld Stefan 
Published: July 2023

Abstract
Over the past decades, discrete dislocation dynamics simulations have been shown to reliably predict the evolution of dislocation microstructures for micrometer-sized metallic samples. Such simulations provide insight into the governing deformation mechanisms and the interplay between different physical phenomena such as dislocation reactions or cross-slip. This work is focused on a detailed analysis of the influence of the cross-slip on the evolution of dislocation systems. A tailored data mining strategy using the ‘discrete-to-continuous (D2C) framework’ allows to quantify differences and to quantitatively compare dislocation structures. We analyze the quantitative effects of the cross-slip on the microstructure in the course of a tensile test and a subsequent relaxation to present the role of cross-slip in the microstructure evolution. The precision of the extracted quantitative information using D2C strongly depends on the resolution of the domain averaging. We also analyze how the resolution of the averaging influences the distribution of total dislocation density and curvature fields of the specimen. Our analyzes are important approaches for interpreting the resulting structures calculated by dislocation dynamics simulations.
Tailoring the work function of graphene via defects, nitrogen-doping and hydrogenation: A first principles study
Authors: Dimov Nikolay , Staykov Aleksandar , Kusdhany‬ ‪Muhammad Irfan Maulana , Lyth Stephen M 
Published: July 2023

Abstract
The effect of defects, nitrogen doping, and hydrogen saturation on the work function of graphene is investigated via first principle calculations. Whilst Stone–Wales defects have little effect, single and double vacancy defects increase the work function by decreasing charge density in the π-electron system. Substitutional nitrogen doping in defect-free graphene significantly decreases the work function, because the nitrogen atoms donate electrons to the π-electron system. In the presence of defects, these competing effects mean that higher nitrogen content is required to achieve similar reduction in work function as for crystalline graphene. Doping with pyridinic nitrogen atoms at vacancies slightly increases the work function, since pyridinic nitrogen does not contribute electrons to the π-electron system. Meanwhile, hydrogen saturation of the pyridinic nitrogen atoms significantly reduces the work function, due to a shift from pyridinic to graphitic-type behavior. These findings clearly explain some of the experimental work functions obtained for carbon and nitrogen-doped carbon materials in the literature, and has implications in applications such as photocatalysis, photovoltaics, electrochemistry, and electron field emission.
Influence of vacancy defects on 2D BeN4 monolayer for NH3 adsorption: a density functional theory investigation
Authors: Lakshmy Seetha , Sanyal Gopal , Kalarikkal Nandakumar , Chakraborty Brahmananda 
Published: July 2023

Abstract
Two-dimensional materials have attracted a great deal of interest in developing nanodevices for gas-sensing applications over the years. The 2D BeN4 monolayer, a recently synthesized single-layered Dirac semimetal, has the potential to function as a gas sensor. This study analyzes the NH3 sensing capacity of the pristine and vacancy-induced BeN4 monolayers using first-principles density functional theory (DFT) calculations. As per the results, the NH3 molecule is physisorbed on the pristine BeN4 via weak Van der Waals interaction with a poor adsorption energy of −0.41 eV and negligible charge transfer. Introducing Be vacancy in BeN4 increased the NH3 adsorption energy to −0.83 eV due to the improved charge transfer (0.044 e) from the defective monolayer to the NH3 molecule. The structural stability, sufficient recovery time (74 s) at room temperature, and superior work function sensitivity promise the potential application of defective BeN4 as an NH3 sensor. This research will be a theoretical groundwork for creating innovative BeN4-based NH3 gas sensors.
Ionization detail parameters and cluster dose: a mathematical model for selection of nanodosimetric quantities for use in treatment planning in charged particle radiotherapy
Authors: Faddegon Bruce , Blakely Eleanor A , Burigo Lucas , Censor Yair , Dokic Ivana , Domínguez Kondo Naoki , Ortiz Ramon , Ramos Méndez José , Rucinski Antoni , Schubert Keith , Wahl Niklas , Schulte Reinhard 
Published: July 2023

Abstract

Objective. To propose a mathematical model for applying ionization detail (ID), the detailed spatial distribution of ionization along a particle track, to proton and ion beam radiotherapy treatment planning (RTP). Approach. Our model provides for selection of preferred ID parameters (I

p
) for RTP, that associate closest to biological effects. Cluster dose is proposed to bridge the large gap between nanoscopic I

p
and macroscopic RTP. Selection of I

p
is demonstrated using published cell survival measurements for protons through argon, comparing results for nineteen I

p
: N

k
, k = 2, 3, …, 10, the number of ionizations in clusters of k or more per particle, and F

k
, k = 1, 2, …, 10, the number of clusters of k or more per particle. We then describe application of the model to ID-based RTP and propose a path to clinical translation. Main results. The preferred I

p
were N
4 and F
5 for aerobic cells, N
5 and F
7 for hypoxic cells. Significant differences were found in cell survival for beams having the same LET or the preferred N

k
. Conversely, there was no significant difference for F
5 for aerobic cells and F
7 for hypoxic cells, regardless of ion beam atomic number or energy. Further, cells irradiated with the same cluster dose for these I

p
had the same cell survival. Based on these preliminary results and other compelling results in nanodosimetry, it is reasonable to assert that I

p
exist that are more closely associated with biological effects than current LET-based approaches and microdosimetric RBE-based models used in particle RTP. However, more biological variables such as cell line and cycle phase, as well as ion beam pulse structure and rate still need investigation. Significance. Our model provides a practical means to select preferred I

p
from radiobiological data, and to convert I

p
to the macroscopic cluster dose for particle RTP.
Regions without flux surfaces of given class for magnetic fields in toroidal geometry
Authors: Kallinikos N , MacKay R S , Martínez-del-Río D 
Published: July 2023

Abstract
A converse KAM method for 3D vector fields, establishing regions through which passes no invariant 2-tori transverse to a given direction field, is tested on some helical perturbations of an axisymmetric magnetic field in toroidal geometry. It finds regions corresponding to magnetic islands and chaos for the fieldline flow. The minimization of these regions is proposed as a tool to help in the design of plasma confinement devices of tokamak and stellarator type.
Holographic energy loss near critical temperature in an anisotropic background
Authors: Zhou Qi , Zhang Ben-Wei 
Published: July 2023

Abstract
We study the energy loss of a quark moving in a strongly coupled quark gluon plasma under the influence of anisotropy. The heavy quark drag force, diffusion coefficient, and jet quenching parameter are calculated using the Einstein–Maxwell-dilaton model, where the anisotropic background is characterized by an arbitrary dynamical parameter A. Our findings indicate that as the anisotropic factor A increases, the drag force and jet quenching parameter both increase, while the diffusion coefficient decreases. Additionally, we observe that the energy loss becomes more significant when the quark moves perpendicular to the anisotropy direction in the transverse plane. The enhancement of the rescaled jet quenching parameters near critical temperature T

c
, as well as drag forces for a fast-moving heavy quark is observed, which presents one of the typical features of quantum chromodynamics phase transition.
Show, Don’t Tell: Emotion, Acquaintance and Moral Understanding Through Fiction
Authors: Brick Shannon 
Published: July 2023

Abstract
This paper substantiates a distinction, built out of Gricean resources, between two kinds of communicative act: showing and telling. Where telling that p proceeds by recruiting an addressee’s capacity to recognize trustworthy informants, showing does not. Instead, showing proceeds by presenting an addressee with a consideration that provides reason to believe that p (other than the reason provided by an informant’s credibility), and so recruits their capacity to respond to those reasons. With this account in place, the paper defends an account of one way in which authors can show their readers that certain moral states of affairs obtain both inside, and outside of, their fictions. It is argued, moreover, that this kind of showing gives addressees access to more than just reasons for moral belief–it also gives them access to the sorts of reasons that enable agents to increase their moral understanding. In virtue of these latter capacities, the showing identified is a way of communicating about morality that is markedly different from the sort of moral testimony that many philosophers have been increasingly interested in of late.
Sustained Hypothetical Interventions on Midlife Alcohol Consumption in Relation to All-Cause and Cancer Mortality: The Australian Longitudinal Study on Women’s Health
Authors: Yang Yi , Hodge Allison M , Lynch Brigid M , Dugué Pierre-Antoine , Williamson Elizabeth J , Jayasekara Harindra , Mishra Gita , English Dallas R 
Published: July 2023

Abstract
No randomized controlled trial has evaluated the effect of long-term alcohol interventions on mortality. Results reported in existing observational studies may be subject to selection bias and time-varying confounding. Using data from the Australian Longitudinal Study on Women’s Health 1946–1951 birth cohort, collected regularly from 1996–2016, we estimated all-cause and cancer mortality had women been assigned various alcohol interventions (in categories ranging from 0 to &gt;30 g/day ethanol, or reduced to ≤20 g/day if higher) at baseline, and had they maintained these levels of consumption. The cumulative risks for all-cause and cancer mortality were 5.6% (10,118 women followed for 20 years) and 2.9% (18 years), respectively. For all-cause and cancer mortality, baseline ethanol up to 30 g/day showed lower risk and &gt;30 g/day showed higher risk relative to abstention. Had women sustainedly followed the interventions, a similar relationship was observed for all-cause mortality. However, the negative association observed for intakes ≤30 g/day and positive association for intakes &gt;30 g/day was not evident for cancer mortality. Our findings suggest that all-cause mortality could have been lower than observed if this cohort of women had consumed some alcohol (no more than 30 g/day) rather than no consumption, but cancer mortality might not.
Quantification of bacterial adhesion to tissue in high-throughput kinetics
Authors: Shteindel Nimrod , Gutman Danielle , Atzmon Gil , Gerchman Yoram 
Published: July 2023

Abstract
Bacterial adhesion to tissue is the starting point for many pathogenic processes and beneficial interactions. The dynamics and speed of adhesion (minutes) make high-resolution temporal kinetic data important, but this capability is absent from the current toolset. We present a high-throughput method with a second-to-minute kinetic resolution, testing the adhesion of Pseudomonas aeruginosa PAO1 wild-type, flagella-, pili-, and quorum-sensing mutants to human embryonic kidney (HEK293) cells. Adhesion rates were in good correlation with HEK293 confluence, and the ways in which various bacterial mutations modified adhesion patterns are in agreement with the published literature. This simple assay can facilitate drug screening and treatment development as well as provide a better understanding of the interactions of pathogenic and probiotic bacteria with tissues, allowing the design of interventions and prevention treatments.