bluuebunny/crossref_metadata_2025 huggingface dataset:
Cicero’s De Officiis, politeness and modern conduct manuals
Authors: Hall Jon
Published: March 2023

This paper considers the guidelines for polite conversation and appropriate comportment presented in Cicero’s
philosophical treatise De Officiis (44 bce), examining them in the light of recent scholarship on modern
conduct manuals (e.g., Terkourafi [2011], Alfonzetti [2016], Culpeper [2017] and Paternoster and Saltamacchia [2017]). In particular, it considers: (1) Cicero’s attempt to impose order on
conversational practices; (2) his guidelines on rebuking others appropriately (a topic often omitted from modern manuals); (3) the
ways in which his views on conversation coincide with modern theories of politeness; (4) his association of polite manners with
moral behaviour and social class; and (5) the role of caricature in his depictions of inappropriate behaviour.
A culture of “pleasing”?
Authors: Held Gudrun
Published: March 2023

This paper seeks to explain the development of European politeness as a result of courtly behaviour where
“complaisance” played an important role. As traces left in the so-called “language of politeness” of numerous European
linguacultures show, mutual “pleasing” determined social performance in hierarchically organised societies by merging aesthetic
concepts of form and order with ethical values of benevolence and charity. An analysis of the lexical item
placere (‘to please’) in Early Modern Italian and French documents highlights the existence of six different
formulaic usages, characterised by a high consistency in frequency, evolution and diffusion all over Europe. Appearing mainly in
connection with interactive moves where will is at stake, placere-formulae represent co-operative means, which
ease social relationships by conditioning and “embellishing” directives with different elements of social
decorum. As acts of submission originating in the Medieval ars dictandi, they became integrated
over time into the French dogma of “polished” conversation as an elitist “art de plaire” (Faret 1665). From France they spread into the European courts establishing a conception of politeness that has been
underestimated in pragmatics so far.
The neural correlates of second language syntax
Authors: Veisi Soheila , Samar Reza Ghaffar
Published: March 2023

An important dimension that characterizes the contextual differences in second language acquisition (SLA) is the
degree to which instruction is implicit or explicit. However, whether these differences in
context play a role in determining the neural activity to process L2 grammar has not been well characterized. The present study
investigated this issue by comparing the neural regions activated in response to novel L2 syntactic rules acquired under
conditions of implicit and explicit instruction. In addition, participants’ declarative and procedural memories were measured to
better understand the mediating effect of memory during learning under different conditions. Explicitly and implicitly instructed
learners showed statistically indistinguishable behavioral performance. Region of interest (ROI) analysis also revealed that the
task activated both declarative and procedural memory structures suggesting that instructional context did not affect the
recruitment of memory systems when processing L2 syntax.
Variations of polyphony in blogs
Authors: Bondi Marina , Nocella Jessica Jane
Published: March 2023

This paper looks at dialogicity in the Slow Art Day blog and focuses on the way the representation of participants encodes the complexity of the communicative action through a polyphony of textual voices. By focusing on posts from the pandemic years (2020 and 2021), and contrasting them with the previous period, we carry out a collocation analysis and a study of semantic preferences (Sinclair 2004) to explore how writers present themselves and how they interact with the reader and other textual voices in a context of cultural intermediation. By looking at forms of address and of self-mention, we trace how this blog enacts different forms of dialogic action with its readers and stakeholders in the extended situational context.
The affordances of an intercultural e-portfolio
Authors: Hanukaev Anastasia
Published: March 2023

This paper explores teachers’ perceptions of the affordances of an e-portfolio of intercultural competence (EPIC). The EPIC was implemented during an 8-week intervention carried out in a Norwegian lower secondary school. Data were collected from various sources (e.g., learners’ texts, focus group interviews), but this paper draws on the data from three individual teacher interviews conducted in the spring semester 2018. This study extends our understanding of the way an e-portfolio can be integrated into the English as a foreign language (EFL) classroom as a tool for promoting intercultural competence. The findings underscore the affordances of the e-portfolio to track the learners’ reflections on their own complex selves and others; moreover, the use of the e-portfolio enabled the teachers to create flexible and varied learning spaces, which in turn provided opportunities for intercultural language learning. Pedagogical implications are provided on how foreign language (FL) teachers might support intercultural competence development through the use of the e-portfolio.
El análisis pragmalingüístico al servicio de la traducción
Authors: Ramos Sañudo Ana María
Published: March 2023

El objetivo de nuestro trabajo es demostrar que el análisis pragmalingüístico debe constituir una herramienta más para el traductor. De hecho, puede resultar indispensable a la hora de buscar la mejor equivalencia de marcadores discursivos fraseológicos como il n’y a pas à dire, cuya traducción del francés al español supone una gran complejidad por diferentes razones: la imposibilidad de efectuar una traducción literal de la secuencia, la coexistencia de una secuencia que funciona libremente junto a la secuencia fijada como marcador epistémico, y las limitaciones que presentan los recursos lexicográficos y traductológicos consultados. Para hacer frente a estas dificultades, proponemos apoyarnos en las conclusiones del análisis pragmalingüístico de la unidad en la lengua de origen, lo que pondrá de manifiesto las particularidades de su funcionamiento discursivo y permitirá establecer una serie de equivalencias válidas para su traducción al español.
Construcción de un corpus escrito y una ontología de errores ortográficos del chabacano zamboangueño
Authors: Himoro Marcelo Yuji , Pareja-Lora Antonio
Published: March 2023

El chabacano zamboangueño es una lengua criolla filipina, de base española, hablada como lengua materna por más de
400.000 personas (datos de 2010). No obstante, su grafía normalizada es relativamente reciente (de 2014). Este artículo presenta
una investigación destinada a la identificación y anotación semiautomática de los errores cometidos por sus hablantes al escribir,
según la ortografía normativa. En primer lugar, detallamos los criterios aplicados en la construcción de un corpus de más de 8
millones de palabras del zamboangueño escrito y los géneros que lo componen, así como los formatos utilizados para codificarlo. En
segundo lugar, describimos el proceso seguido para (1) el estudio de los errores y problemas ortográficos presentes en este
corpus; (2) el desarrollo de una taxonomía elaborada para su mejor representación y clasificación; y (3) su formalización mediante
una ontología. Por último, discutimos el resultado principal de este trabajo: un corpus de zamboangueño escrito, con sus errores
ortográficos clasificados y anotados semiautomáticamente con enlaces a la ontología y sus formas corregidas correspondientes.
Estas anotaciones nos permitirán a corto plazo analizar de manera más sistemática y profunda las faltas de ortografía cometidas
por los usuarios del zamboangueño.
Proteolytic regulation of a galectin-3/Lrp1 axis controls osteoclast-mediated bone resorption
Authors: Zhu Lingxin , Tang Yi , Li Xiao-Yan , Kerk Samuel A. , Lyssiotis Costas A. , Sun Xiaoyue , Wang Zijun , Cho Jung-Sun , Ma Jun , Weiss Stephen J.
Published: March 2023

Bone-resorbing osteoclasts mobilize proteolytic enzymes belonging to the matrix metalloproteinase (MMP) family to directly degrade type I collagen, the dominant extracellular matrix component of skeletal tissues. While searching for additional MMP substrates critical to bone resorption, Mmp9/Mmp14 double-knockout (DKO) osteoclasts—as well as MMP-inhibited human osteoclasts—unexpectedly display major changes in transcriptional programs in tandem with compromised RhoA activation, sealing zone formation and bone resorption. Further study revealed that osteoclast function is dependent on the ability of Mmp9 and Mmp14 to cooperatively proteolyze the β-galactoside–binding lectin, galectin-3, on the cell surface. Mass spectrometry identified the galectin-3 receptor as low-density lipoprotein-related protein-1 (Lrp1), whose targeting in DKO osteoclasts fully rescues RhoA activation, sealing zone formation and bone resorption. Together, these findings identify a previously unrecognized galectin-3/Lrp1 axis whose proteolytic regulation controls both the transcriptional programs and the intracellular signaling cascades critical to mouse as well as human osteoclast function.
The gravito-electromagnetic approximation to the gravimagnetic dipole and its velocity rotation curve
Authors: Govaerts Jan
Published: March 2023

In view of the observed flat rotation curves of spiral galaxies and motivated by the simple fact that within Newtonian gravity a stationary axisymmetric mass distribution or dark matter vortex of finite extent readily displays a somewhat flattened out velocity rotation curve up to distances comparable to the extent of such a vortex transverse to the galaxy’s disk, the possibility that such a flattening out of rotation curves may rather be a manifestation of some stationary axisymmetric space-time curvature of purely gravitational character, without the need of some dark matter particles, is considered in the case of the gravimagnetic dipole carrying opposite Newman–Unti–Tamburino charges and in the tensionless limit of its Misner string, as an exact vacuum solution to Einstein’s equations. Aiming for a first assessment of the potential of such a suggestion easier than a full-fledged study of its geodesics, the situation is analysed within the limits of weak field gravito-electromagnetism and nonrelativistic dynamics. Thereby leading indeed to interesting and encouraging results.
Gravitational duality, Palatini variation and boundary terms: a synopsis
Authors: Lindström Ulf , Sarıoğlu Özgür
Published: March 2023

We consider f(R) gravity and Born–Infeld–Einstein (BIE) gravity in formulations where the metric and connection are treated independently and integrate out the metric to find the corresponding models solely in terms of the connection, the archetypical treatment being that of Eddington–Schrödinger (ES) duality between cosmological Einstein and Eddington theories. For dimensions

D
≠
2

, we find that this requires f(R) to have a specific form which makes the model Weyl invariant, and that its Eddington reduction is then equivalent to that of BIE with certain parameters. For D = 2 dimensions, where ES duality is not applicable, we find that both models are Weyl invariant and equivalent to a first order formulation of the bosonic string. We also discuss the form of the boundary terms needed for the variational principle to be well defined on manifolds with non-null boundaries. This requires a modification of the Gibbons–Hawking–York (GHY) boundary term for gravity. This modification also means that the dualities between metric and connection formulations are consistent and include the boundary terms.
Second release of the CoRe database of binary neutron star merger waveforms
Authors: Gonzalez Alejandra , Zappa Francesco , Breschi Matteo , Bernuzzi Sebastiano , Radice David , Adhikari Ananya , Camilletti Alessandro , Vivekanandji Chaurasia Swami , Doulis Georgios , Padamata Surendra , Rashti Alireza , Ujevic Maximiliano , Brügmann Bernd , Cook William , Dietrich Tim , Perego Albino , Poudel Amit , Tichy Wolfgang
Published: March 2023

We present the second data release of gravitational waveforms from binary neutron star (BNS) merger simulations performed by the Computational Relativity (CoRe) collaboration. The current database consists of 254 different BNS configurations and a total of 590 individual numerical-relativity simulations using various grid resolutions. The released waveform data contain the strain and the Weyl curvature multipoles up toℓ=m=4. They span a significant portion of the mass, mass-ratio, spin and eccentricity parameter space and include targeted configurations to the events GW170817 and GW190425.CoResimulations are performed with 18 different equations of state, seven of which are finite temperature models, and three of which account for non-hadronic degrees of freedom. About half of the released data are computed with high-order hydrodynamics schemes for tens of orbits to merger; the other half is computed with advanced microphysics. We showcase a standard waveform error analysis and discuss the accuracy of the database in terms of faithfulness. We present ready-to-use fitting formulas for equation of state-insensitive relations at merger (e.g. merger frequency), luminosity peak, and post-merger spectrum.
A flexible strain sensor based on MXene/AgNW composite film with extremely high sensitivity and low strain range for real-time health monitoring and thermal management
Authors: Qin Wenfeng , Geng Junheng , Lin Chuanxi , Xue Yunsheng , Zhong Mian , Zou Yao , Liu Guochun , Zhang Ting
Published: March 2023

Flexible electronic devices have received increasing attention due to their potential applications in wearable human motion and healthcare monitoring and thermal management. Nevertheless, flexible electronic devices for more precise health monitoring of human physiological movement under low strain are still a pressing issue to solve. Herein, a wearable flexible strain sensor with a three-dimensional (3D) conductive network is developed for healthcare monitoring and thermal management by embedding silver nanowires (AgNWs) and Ti3C2T
x
MXene composite films into a polydimethylsiloxane matrix. The sensor can be utilized for human health monitoring, pulse detection at the wrist, and breathing monitoring of human physiological movement due to its low strain detection capacity (0.05% strain) and high sensitivity (gauge factor up to 9472). The primary detection range of the sensor is 0%–1% of tiny strains. Moreover, the exceptional electric heating and optothermal effect supported by the AgNWs and MXene protects human health in extremely cold environments. The MXene/AgNW strain sensor with high sensitivity under low strain has great potential for more precise health monitoring of human physiological movements and thermal management.
Intelligent electromagnetic mapping via physics driven and neural networks on frequency selective surfaces
Authors: Miao Wuxia , Zhang Lamei , Zou Bin , Ding Ye
Published: March 2023

The high mapping efficiency between various structures and electromagnetic (EM) properties of frequency selective surfaces (FSSs) is the state-of-the-art in the EM community. The most straightforward approaches for beam analysis depend on measurements and conventional EM calculation methods, which are inefficient and time-consuming. Equivalent circuit models (ECMs) with excellent intuitiveness and simplicity have been put forward extensively. Despite several applications, bottlenecks in ECM still exist, i.e. the application scope is restricted to narrow bands and specific structures, which is triggered by the ignorance of EM nonlinear coupling. In this study, for the first time, a lightweight physical model based on neural network (ECM-NN) is proposed , which exhibits great physical interpretability and spatial generalization abilities. The nonlinear mapping relationship between structure and beam behavior is interpreted by corresponding simulations. Specifically, two deep parametric factors obtained by multi-layer perceptron networks are introduced to serve as the core of lightweight strategies and compensate for the absence of nonlinearity. Experimental results of single square loop (SL) and double SL indicate that compared with related works, better agreements of the frequency responses and resonant frequencies are achieved with ECM-NN in broadband (0–30 GHz) as well as oblique incident angles (0°–60°). The average accuracy of the mapping is higher than 98.6%. The findings of this study provide a novel strategy for further studies of complex FSSs.
Frequency-selective valley edge routing of elastic wave in topological phononic crystals with different symmetries
Authors: Yao Long-chao , Hsieh Kuan-Hong , Chiu Shih-Chia , Li Hong-kang , Huo Shao-yong , Fu Chun-ming
Published: March 2023

The control of propagation direction or path of edge states is difficult when the chirality of the excitation source and the boundary structures are determined. Here, we studied a frequency-selective routing for elastic wave based on two types of topological phononic crystals (PnCs) with different symmetries. By constructing multiple types of interfaces between different PnCs structures with distinct valley topological phases, the valley edge states of elastic wave could be realized at different frequencies in the band gap. Meanwhile, based on the simulation of topological transport, it is found that the routing path of elastic waves valley edge states highly depends on the operating frequency and the inputting port of the excitation source. By varying the excitation frequency, the transport path can be switched. The results provide a paradigm for the control of elastic wave propagation paths that could be employed for designing the frequency-dependent ultrasonic division devices.
Measuring elastic parameters of transversely isotropic materials by cylindrical indentation
Authors: Liao Yanguo , Xie Shuibo
Published: March 2023

Based on the cylindrical indentation experiments, a novel model for characterizing the elastic mechanical property of transversely isotropic materials has been established. The cylindrical indentation of transversely isotropic materials was theoretically and dimensionally analyzed. Three-dimensional (3D) indentation experiments that encompass the wide range of transversely isotropic material parameters were simulated by finite element. The effect of each parameter (transversely isotropic Young’s modulus, EP
, longitudinal Young’s modulus, EL
, longitudinal shear modulus, GL
, and loading orientation angle, α) on the normalized indentation modulus was investigated. Then, the dimensionless analytical relationship between indentation moduli and elastic parameters was obtained at three different indentation orientations

α
=

0

∘

, 45

∘

,

and 90

∘

. Several groups of transversely isotropic materials were selected as input parameters to carry out numerical indentation experiments for the error analysis. The sensitivity of the calculated elastic parameters to the experimental data was analyzed. Simultaneously, the technique was used in the particular case of a Zinc single-crystal material, and the accuracy of these derived formulas was verified. The good agreement shows that the proposed method is reliable and could be applied to characterize the elastic parameters of transversely isotropic materials.
Radially inward particle transport driven by low-frequency instability in cylindrical magnetized plasma
Authors: Liu Hao , Yu Yi , Xiao Chenyu , Yuan Zihao , Wang Huajie , Nie Lin , Ke Rui , Long Ting , Gong Shaobo , Xu Min
Published: March 2023

Net radially inward turbulent particle flux was observed in a linear plasma device, the linear experimental advanced device (LEAD). The amplitude of the inward particle flux is comparable with outward particle flux. The inward particle flux peak value locates in the outer E

r
shear layer. Cross-phase evolution dominates the radial evolution of particle flux from outward to inward. In the frequency domain, a 1 kHz mode contributes most of the inward particle flux. Frequency-resolved energy transfer analysis infers that this mode obtains energy nonlinearly from very low frequency fluctuations below 0.5 kHz. Moreover, turbulence spreading could also transfer energy to the position where the inward flux peak locates from nearby positions, and thus acts as a nonlocal, nonlinear drive for the 1 kHz mode.
Tuning microwave losses in superconducting resonators
Authors: Gurevich Alex
Published: March 2023

The performance of superconducting resonators, particularly cavities for particle accelerators and micro cavities and thin film resonators for quantum computations and photon detectors, has been improved substantially by recent material treatments and technological advances. As a result, the niobium cavities have reached the quality factors

Q
∼

10

11

at 1–2 GHz and 1.5 K and the breakdown radio-frequency (rf) fields H close to the dc superheating field of the Meissner state. These advances raise the questions of whether the state-of-the-art cavities are close to the fundamental limits, what these limits actually are, and to what extent the Q and H limits can be pushed by the materials nano structuring and impurity management. These issues are also relevant for many applications using high-Q thin film resonators, including single-photon detectors and quantum circuits. This topical review outlines basic physical mechanisms of the rf nonlinear surface impedance controlled by quasiparticles, dielectric losses and trapped vortices, as well as the dynamic field limit of the Meissner state. Sections cover methods of engineering an optimum quasiparticle density of states and superfluid density to reduce rf losses and kinetic inductance by pairbreaking mechanisms related to magnetic impurities, rf currents, and proximity-coupled metallic layers at the surface. A section focuses on mechanisms of residual surface resistance, which dominates rf losses at ultra low temperatures. Microwave losses of trapped vortices and their reduction by optimizing the concentration of impurities and pinning potential are also discussed.
Sequential color ghost imaging based on compressed sensing algorithm of post-processing measurement matrix
Authors: Wang Yujie , Liu Yang , Bai Xing , Yu Zhan , Chen Xingyu , Yuan Sheng , Zhou Xin
Published: March 2023

Compressed sensing algorithm can be used in color ghost imaging to restore the image of object at the less demand of measurements times. However, the quality of the reconstructed color image is usually not satisfactory. In this paper, we propose a sequential color ghost imaging method that can complete color ghost imaging in a simple architecture and improve the quality of color image, which is optimize compressed sensing that can get better result of compressed sensing algorithm by post-processing the measurement matrix and establishing a new compressed sensing process. Under the condition of the same measurement times and reconstruction algorithm, compared with the unpost-processing one, the quality and detail of reconstructed image by the post-processing measurement matrix is quite improved especially with the increase of measurement times. Discussions on factors affecting the quality of the new compressed sensing process, such as the number of measurement and the detection noise intensity, are also conducted. Numerical simulation and physical experiment verified our proposed method.
Photodetecting properties on Sn-doped Bi2S3 thin film fabricated by nebulizer spray pyrolysis technique
Authors: Ganesh V , AlAbdulaal T H , Yahia I S
Published: March 2023

Metal chalcogenides have recently gained intensive attention due to their tunable bandgap energy, optoelectronic characteristics, and exceptional optical absorption. Because of the potential advantage of photodetectors, photovoltaic, holographic recording systems, and field-effect transistors, bismuth tri-sulfide (Bi2S3) crystals, in particular, have attracted a lot of focus in scientific research. In this study, the low-cost nebulizer spray technique was employed to synthesize the proposed Bi2S3:Sn thin films on glass substrates, varying the Sn doping concentrations in Bi2S3 films (from 1 to 3%). The crystallites of the orthorhombic-structured polycrystalline Bi2S3 films were all oriented in the same direction (130). According to the XRD spectra, preferred orientation and crystalline quality were improved by Sn doping concentrations up to 2%, but, above 2% of the Sn doping ratio, the structural properties were decreased. With increasing Sn-doping levels, the estimated direct band gap (Eg) of the Bi2S3:Sn films decreased, reaching a low value of 2.01 eV at 2% Sn and then rising. A field emission scanning electron microscope (FESEM) was applied to determine the size and shape of the grains in prepared Sn: Bi2S3 films.The 2% Sn-doped Bi2S3 thin film may be more appropriate for high-speed optoelectronic devices due to its high responsivity (1.24 AW−1), external quantum efficiency (40%), and detectivity properties (1.83 × 1010Jones). A potential mechanism for photodetector performance in the presence of air and UV radiation was also discussed in the present work for the proposed Sn: Bi2S3 thin films.
Cosmological distances with general-relativistic ray tracing: framework and comparison to cosmographic predictions
Authors: Macpherson Hayley J.
Published: March 2023

In this work we present the first results from a new ray-tracing tool to calculate
cosmological distances in the context of fully nonlinear general relativity. We use this tool to
study the ability of the general cosmographic representation of luminosity distance, as truncated
at third order in redshift, to accurately capture anisotropies in the “true” luminosity
distance. We use numerical relativity simulations of cosmological large-scale structure formation
which are free from common simplifying assumptions in cosmology. We find the general, third-order
cosmography is accurate to within 1% for redshifts to z ≈ 0.034 when sampling scales
strictly above 100 h
-1 Mpc, which is in agreement with an earlier prediction. We find the
inclusion of small-scale structure generally spoils the ability of the third-order cosmography to
accurately reproduce the full luminosity distance for wide redshift intervals, as might be
expected. For a simulation sampling small-scale structures, we find a ∼ ±5% variance in
the monopole of the ray-traced luminosity distance at z ≈ 0.02. Further, all 25 observers
we study here see a 9–20% variance in the luminosity distance across their sky at z ≈
0.03, which reduces to 2–5% by z ≈ 0.1. These calculations are based on simulations and
ray tracing which adopt fully nonlinear general relativity, and highlight the potential importance
of fair sky-sampling in low-redshift isotropic cosmological analysis.
Anomalous photoluminescence enhancement and resonance charge transfer in type-II 2D lateral heterostructures
Authors: Zhao Chun-Yan , Li Sha-Sha , Yan Yong
Published: March 2023

Type-II band alignment can realize the efficient charge transfer and separation at the semiconductor heterointerface, which results in photoluminescence (PL) quenching. Recently, several researches demonstrated great enhancement of localized PL at the interface of type-II two-dimensional (2D) heterostructure. However, the dominant physical mechanism of this enhanced PL emission has not been well understood. In this work, we symmetrically study the exciton dynamics of type-II lateral heterostructures of monolayer MoS2 and WS2 at room temperatures. The strong PL enhancement along the one-dimensional (1D) heterointerface is associated with the trion emission of the WS2 shell, while a dramatic PL quenching of neutral exciton is observed on the MoS2 core. The enhanced quantum yield of WS2 trion emission can be explained by charge-transfer-enhanced photoexcited carrier dynamics, which is facilitated by resonance hole transfer from MoS2 side to WS2 side. This work sheds light on the 1D exciton photophysics in lateral heterostructures, which has the potential to lead to new concepts and applications of optoelectronic device.
Effect of magnetic field on expansion of ferrofluid-encapsulated microbubble
Authors: Du Zhiwei , Li Fan , Pan Ruiqi , Mo Runyang , Wang Chenghui
Published: March 2023

Magnetic microbubbles (MMBs) have great potential applications in drug delivery and target therapy because they can be controlled by magnetic fields. In this paper, dynamic equations are derived by Lagrangian formalism and the behavior of MMBs subject to a combination field of magnetic and ultrasound field in an incompressible infinite fluid is analyzed numerically. The results show that the magnetic field can promote bubble expansion and hinder its translational motion, and both the enhancement and obstruction effects will weaken with the decrease of bubble size. The initial translational velocity has almost no effect on bubbles motion. Besides, the maximum expansion radius of MMBs increases with the ferrofluid shell thickness, while that of the common MBs is just the opposite. In addition, the periodic change of Levich viscous drag caused by the rebound leads to the step-like translational motion. Finally, the ferrofluid-shell model can be replaced by the model of non-magnetic microbubbles in magnetic liquid at high driving frequency.
Z
0 boson associated b-jet production in high-energy nuclear collisions*
Authors: Wang Sa , Dai Wei , Zhang Ben-Wei , Wang Enke
Published: March 2023

The production of vector boson tagged heavy quark jets potentially provides new tools to probe the jet quenching effect. In this paper, we present the first theoretical study on the angular correlations (

), transverse momentum imbalance (

), and nuclear modification factor (

) of

boson tagged b-jets in heavy-ion collisions, which was performed using a Monte Carlo transport model. We find that the medium modification of the

for

+ b-jet has a weaker dependence on

than that for

+ jet, and the modification patterns are sensitive to the initial jet

distribution. Additionally, with the high purity of the quark jet in

+ (b-) jet production, we calculate the momentum imbalance

and the nuclear modification factor

of

+ b-jet in Pb+Pb collisions. We observe a smaller

and larger

of

+ b-jet in Pb+Pb collisions relative to those of

+ jet, which may be an indication of the mass effect of jet quenching and can be tested in future measurements.
Regular black holes with improved energy conditions and their analogues in fluids*
Authors: Lan Chen , Miao Yan-Gang , Zang Yi-Xiong
Published: March 2023

On the premise of the importance of energy conditions for regular black holes, we propose a method to remedy those models that break the dominant energy condition, e.g., the Bardeen and Hayward black holes. We modify the metrics but ensure their regularity at the same time, so that the weak, null, and dominant energy conditions are satisfied, with the exception of the strong energy condition. Likewise, we prove a no-go theorem for conformally related regular black holes, which states that the four energy conditions can never be met in this class of black holes. In order to seek evidences for distinguishing regular black holes from singular black holes, we resort to analogue gravity and regard it as a tool to mimic realistic regular black holes in a fluid. The equations of state for the fluid are solved via an asymptotic analysis associated with a numerical method, which provides a modus operandi for experimental observations, in particular, the conditions under which one can simulate realistic regular black holes in the fluid.
Asynchronous axonal firing patterns evoked via continuous subthreshold kilohertz stimulation
Authors: Vargas Luis , Musselman Eric D , Grill Warren M , Hu Xiaogang
Published: March 2023

Objective. Transcutaneous electrical stimulation of peripheral nerves is a common technique to assist or rehabilitate impaired muscle activation. However, conventional stimulation paradigms activate nerve fibers synchronously with action potentials time-locked with stimulation pulses. Such synchronous activation limits fine control of muscle force due to synchronized force twitches. Accordingly, we developed a subthreshold high-frequency stimulation waveform with the goal of activating axons asynchronously. Approach. We evaluated our waveform experimentally and through model simulations. During the experiment, we delivered continuous subthreshold pulses at frequencies of 16.67, 12.5, or 10 kHz transcutaneously to the median and ulnar nerves. We obtained high-density electromyographic (EMG) signals and fingertip forces to quantify the axonal activation patterns. We used a conventional 30 Hz stimulation waveform and the associated voluntary muscle activation for comparison. We modeled stimulation of biophysically realistic myelinated mammalian axons using a simplified volume conductor model to solve for extracellular electric potentials. We compared the firing properties under kHz and conventional 30 Hz stimulation. Main results. EMG activity evoked by kHz stimulation showed high entropy values similar to voluntary EMG activity, indicating asynchronous axon firing activity. In contrast, we observed low entropy values in EMG evoked by conventional 30 Hz stimulation. The muscle forces evoked by kHz stimulation also showed more stable force profiles across repeated trials compared with 30 Hz stimulation. Our simulation results provide direct evidence of asynchronous firing patterns across a population of axons in response to kHz frequency stimulation, while 30 Hz stimulation elicited synchronized time-locked responses across the population. Significance. We demonstrate that the continuous subthreshold high-frequency stimulation waveform can elicit asynchronous axon firing patterns, which can lead to finer control of muscle forces.
High quality geopolymer concrete by using binder nano metakaolin
Authors: salman Sadeq dawood , Jubier Najwa J , AlZubaidi Aseel B
Published: March 2023

Iraqi Metakaolin was used to produce geopolymer mortar and concrete with high specifications. To convert Kaolin to Metakaolin, the De-hydroxylation process was carried out by burning Kaolin at 700°C. Metakaolin was crushed and ground by a ball mill to obtain the Metakaolin at the nanoscale. The large specific surface area of total nanoparticles gives unique properties during their interaction with an alkali-activated solution to form the geopolymer. Nano metakaolin geopolymer mortar mixtures were manufactured entirely according to specification ASTM C109/C109M-16a with different concentrations of alkaline solution (8 - 10 - 12 – 14) molarity. Through mortar test, it was noted the best result of geopolymer at 12 molarity, gives the advantage of dissolving alumina and silica nanoparticles to forming a geopolymer with high specifications. The highest rate of compressive strength of geopolymer mortar is 73 MPa. But in the geopolymer concrete mix with other nanomaterials replaced as a percentage by weight of the nano metakaolin binder, where incorporated (3%) nano-glass blended with (0.01%) carbon nanotube to observe the superior compressive strength reached 74.7 MPa. The effect of freezing and thawing has been, and no effect on compressive strength. During the water absorption test, observed that the absorbance is close to 1.7 %. The main benefit of the total binder nano metakaolin geopolymer is no heat treatment is used for the polymerization process and obtaining high specifications due to the effectiveness and high pozzolan effect of nanomaterials leads to improving compressive strength and other durability properties.
Effect of dipping number of polyvinyl alcohol (PVA) -coated on optical Fiber for Humidity Sensor
Authors: Hairi H M , Rosli M H , Mamat M H , Noor N H M , Supardan S N , Kamil S A
Published: March 2023

Optical Fiber Humidity Sensors (OFHSs) have attracted significant research interest due to their several advantages including small size, high durability and can withstand the extreme environment regardless of high temperature, high pressure and high electromagnetic radiation. In this study, the proposed sensors were built from standard single-mode silica fibers working at telecommunication wavelengths and exhibited very good humidity sensing characteristics. Single-mode optical fibers were coated with different dipping numbers (2, 4, 6 8, and 10 times) of polyvinyl alcohol (PVA) solution using a dip coating method. The sensing performance of uncoated and PVA-coated optical fiber sensors in terms of its sensitivity for various relative humidity (RH) percentages ranging from 40 to 90 % RH was monitored using Ocean Optics spectrometer. The intensity peaks of PVA-coated optical fibers were increased linearly with dipping numbers. The optimum sensing performance was observed for 10 times dipping number of PVA solution with the highest intensity of 4100 counts at 60 % RH and exhibits good repeatability with precision error values in the range of 0 to 2 %. Furthermore, the gap difference between intensity counts due to % RH changes could be clearly observed for 10 times dipping numbers. These reported results are important to enhance the performance of humidity sensor for sensing and monitoring purposes.
Non-thermal plasma dielectric barrier discharge reactor stability analysis using fiber bragg grating sensor
Authors: Shah Wan Insaniah Saleha Ahmad , Lim Yue Shun , Ibrahim Raja Kamarulzaman Raja , Bakar Mohd Bakri , Safaai Siti Sarah
Published: March 2023

The main focus in this study is to determine the stability of the plasma generated by a Dielectric Barrier Discharge (DBD) reactor in the presence and without glass beads as dielectric enhancement. The stability of plasma was determined based on plasma temperature which measured within plasma stream. The DBD plasma reactor was designed, fabricated and being operated in an open air system. Fiber Bragg grating (FBG) was used to measure the plasma temperature. The applied voltage was increased up to 8 kV to determine breakdown voltage and evaluate plasma stability with and without the presence of glass beads as dielectric enhancement. Experimental results revealed that plasma started to generate at applied voltage about 3.0 kV. Plasma formation found generated with stable at applied voltage 8 kV for both with and without the presence of glass beads. With the presence of glass beads, the plasma temperature found much higher about 180 °C compare with without glass beads which is about 90 °C, and yet the plasma generation is still stable.
Acute lymphoblastic leukemia image segmentation based on modified HSV model
Authors: Najjar Fallah H , Khudhair Kifah T , Khudhair Zaid Nidhal , Alwan Haneen H , Al-khaykan Ameer
Published: March 2023

Image segmentation is a critical step in computer-aided diagnosis that could speed up Leukemia detection. Leukemia is a cancer of the blood that has a reputation for being particularly lethal. Based on the immunohistochemical method, the leukocytes can be manually counted in a stained peripheral blood smear image to detect Acute Lymphoblastic Leukemia (ALL). Regrettably, the manual diagnosis process takes about 3 to 24 hours to complete, which is insufficient. This paper introduced a new and straightforward ALL image segmentation approach based on color image transformation. First, Leukemia, ALL-IDB1, ALL-IDB2, and ALL image datasets were used in this paper. The Leukemia dataset includes 208 ALL-IDB1 and ALL-IDB2 images, while The ALL dataset has 3256 images. Next, we use the HSV model to transform ALL images. In addition, we modified the HSV model by pre-processing the saturation channel for better results. Then, the pre-processed images were segmented based on a fixed threshold. After that, various metrics are utilized to measure the output of the proposed method. Finally, the proposed methodology is compared to currently used benchmarks. The proposed method outperforms previous approaches regarding accuracy, specificity, sensitivity, and time. In addition, results show that the proposed technique improves performance measures significantly.
A new approach for DNA sequence analysis using multiwavelet transform (MWT)
Authors: Sakran Ammar AbdRaba , Hadi Suha M , Mahmoud Al-Jawher Waleed A
Published: March 2023

Finding the nucleotide sequence within a DNA (deoxyribonucleic acid) molecule is the process of DNA sequencing. The DNA of every organism is made up of a specific pattern of nucleotides. Scientists can compare the DNA of different organisms by sequence to understand how organisms are connected. Three different forms of DNA sequencing - fragment analysis, Next Generation Sequencing (NGS), and Sanger sequencing - enable many new applications that increase our knowledge of genomes. It significantly impacts how well we understand how the genome works. Finding the hidden structural information of DNA is an important task. This paper introduces Multi-Wavelet Transformation (MWT) for analysis of the sequence of the DNA symbols. The symbolic DNA sequence has four indicator sequences. The MWT assigned symbols to numbers based on DNA structure. It can change each channel’s weighting to optimize energy distribution over MWT output. Analysis of synthetic and actual DNA sequences allowed the researchers to evaluate how well the proposed MWT works. The results show that the MWT has a higher energy dispersion than the regular WT and the bionic wavelet transform (BWT). Future DNA sequence analyses should be able to discover hidden structural features using this MWT approach.
(Semi)leptonic kaon decays and neutral kaon mixing from lattice QCD
Authors: Kaneko Takashi
Published: March 2023

We review recent progress on leptonic and semileptonic kaon decays and neutral kaon mixing from lattice QCD.
Semileptonic weak Hamiltonian to in momentum-space subtraction schemes
Authors: Moretti F , Gorbahn M , Jäger S , van der Merwe E
Published: March 2023

The CKM unitarity precision test of the Standard Model requires a systematic treatment of electromagnetic corrections for semi-leptonic decays. Electromagnetic corrections renormalize a semi-leptonic four-fermion operator and we calculate the 𝒪(ααs
) perturbative scheme conversion between the

MS

¯

scheme and several momentum-space subtraction schemes, which can also be implemented on the lattice. We consider schemes defined by MOM and SMOM kinematics and emphasize the importance of the choice of projector for each scheme. The conventional projector, that has been used in the literature for MOM kinematics, generates an artificial QCD contribution to the conversion factor, which reflects in an unphysical dependence on the lattice matching scale. This can be traced to the violation of a Ward identity that holds in the case QED is neglected. We show how to remedy this by judicious choices of projector. The resulting Wilson coefficients (and operator matrix elements) have greatly reduced scale dependence.
Sterile neutrinos in light of the Cabibbo-angle anomaly
Authors: Kitahara Teppei , Tobioka Kohsaku
Published: March 2023

Based on recent developments in the lattice simulations and calculations of the radiative corrections to the charged-current interactions, the uncertainties for each component in the CKM matrix have been sophisticated. It is known that the first-row CKM unitarity is violated at about 3σ level, implying a 3σ level deviation from the standard model prediction. This new deviation is called Cabibbo-Angle Anomaly (CAA). These CKM components are mainly extracted from kaon, pion, and the superallowed beta decays. In this contribution, we point out that a MeV scale sterile neutrino can economically explain the CAA. We consistently investigate the sterile neutrino contributions to the kaon, pion, superallowed beta decays, and also the Fermi coupling constant.
Radiative modes K
+ → π
+
γ
*
γ
(*) and the K+ → π+4e decay
Authors: Husek Tomáš
Published: March 2023

We discuss radiative transitions of a kaon to pion and two photons. In particular, we have a closer look at radiative corrections for the K
+ → π
+
ℓ
+
ℓ
− decays and present the branching ratio of the K
+ → π
+
e
+
e
−
e
+
e
− process calculated for the first time at leading order in the Standard Model.
Search for K
0 → μ
+
μ
−
μ
+
μ
− at the LHCb experiment
Authors: Fernández Gómez Miguel
Published: March 2023

These proceedings discuss the search for

K

S(L)

0

→

μ
+

μ
−

μ
+

μ
−

decays, performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.1 fb−1 . Upper limits are computed to be, at 90% C.L.,

B
(

K

S(L)

0

→

μ
+

μ
−

μ
+

μ
−

)
<
5.1
×

10

−
12

(
2.3
×

10

−
9

)

.
Direct CP violation in K → ππ decay on the lattice with periodic boundary conditions
Authors: Tomii Masaaki
Published: March 2023

Following our recent publication on direct CP violation and the ΔI = 1/2 rule in K → ππ decay, which was made with G-parity boundary conditions, we revisit this problem with a conventional lattice setup employing periodic boundary conditions and two lattice spacings to check our previous result and to improve the precision. We show that the physical amplitude, which corresponds to an excited state in this case, can be obtained reliably with the Generalized Eigenvalue Problem (GEVP) method. Not only are periodic boundary conditions cheaper and allow the use of existing ensembles to take the continuum limit, but they provide a straightforward path to introduce electromagnetism and strong isospin symmetry breaking, which will be needed in the near future. In this article we show our preliminary results and discuss the prospect of the high-precision calculation of K → ππ decay with periodic boundary conditions.
Recent Results from Belle and Belle II
Authors: Higuchi Takeo
Published: March 2023

We report the latest status of the physics activities at the Belle and Belle II experiments including determinations of the CKM-triangle parameters, tests of the lepton-flavor universality, a search for the

B
+

→

K
+

ν

ν
¯

decay, a measurement of the

Ω
c
0

lifetime, and searches for invisible new particles.
Effect of low-energy neutrons on accidental counting rate in the KOTO experiment
Authors: Matsumura T
Published: March 2023

For further sensitivity improvement in the KOTO experiment, we studied the origin and mechanism of accidental hits of the VETO counters. A simulation study shows that a half of the counts of Front-Barrel (FB) VETO counter is stemmed from “delayed photons”, which is produced by the (n,γ) reaction due to the thermal neutrons moderated in the KOTO detector. A boron-carbide absorber is a possible candidate to suppress the delayed photons.
Thin scintillation counter with a new readout method for the KOTO experiment
Authors: Ono Keita
Published: March 2023

The KOTO experiment at J-PARC is dedicated to the search for the rare decay

K
L

→

π
0

ν

ν
¯

. While analyzing the data taken in 2018-2018, we found that some background events were caused by K
± decays in the beam. To reduce this background, we are developing a new charged particle detector. It uses a 0.2-mm-thick plastic scintillator. The scintillation light escaping from the surface of the scintillator without total reflection is collected by 12-μm-thick aluminized mylar and is read out by multiple PMTs on the side. Based on the performance evaluated with an electron beam, we expect to have 1/100 K
± background reduction.
Baryon number violation from confining New Physics
Authors: Arun Mathew Thomas
Published: March 2023

The detection of neutron-antineutron oscillation will be a discovery of fundamental importance in particle physics and cosmology. Models predicting them, usually, assume weak couplings at the scale of the experiment, although Nature has been quite evasive regarding the issue. Acknowledging this, we discuss a new non-perturbative mechanism, generated by confining New Physics in a linear moose, resulting in low-energy baryon number violating effects within the reach of current terrestrial and Neutron Star measurements.