bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reconceptualizing academic dishonesty as a struggle for intersubjective recognition: a new theoretical model
Authors: Roe Jasper 
Published: May 2022

AbstractRenewed interest in academic dishonesty (AD) has occurred as a result of the changes to society and higher education during the COVID-19 pandemic. Despite a broad body of research investigating why and how students engage in intentional violations of principles of academic integrity, the causes of these behaviors remain uncertain. In order to fully address the overarching issue of why students engage in academically dishonest practices, social philosophy can be invoked. This article reviews the current research on AD in higher education, and then seeks to develop a new theoretical understanding based on Axel Honneth’s (1995) Theory of Recognition, positing that it is not a moral deficit that drives students to commit such acts, but a struggle for intersubjective recognition and a subtle form of privatized resistance. This offers a universal model for interpreting and understanding the position of the student in higher education, while offering insight into a social pathology, namely, the social pressure that requires higher education to be viewed as an instrumental rather than intrinsic value.
CRISPR-Cas9 editing of the arginine–vasopressin V1a receptor produces paradoxical changes in social behavior in Syrian hamsters
Authors: Taylor Jack H. , Walton James C. , McCann Katharine E. , Norvelle Alisa , Liu Qian , Vander Velden Jacob W. , Borland Johnathan M. , Hart Michael , Jin Chengliu , Huhman Kim L. , Cox Daniel N. , Albers H. Elliott 
Published: May 2022

SignificanceArginine–vasopressin (AVP) acting on V1a receptors (Avpr1as) represents a key signaling mechanism in a brain circuit that increases the expression of social communication and aggression. We produced Syrian hamsters that completely lack Avpr1as (Avpr1aknockout [KO] hamsters) using the CRISPR-Cas9 system to more fully examine the role of Avpr1a in the expression of social behaviors. We confirmed the absence of Avpr1as in these hamsters by demonstrating 1) a complete lack of Avpr1a-specific receptor binding throughout the brain, 2) a behavioral insensitivity to centrally administered AVP, and 3) an absence of the well-known blood-pressure response produced by activating Avpr1as. Unexpectedly, however,Avpr1aKO hamsters displayed more social communication behavior and aggression toward same-sex conspecifics than did their wild-type (WT) littermates.
Two kinds of selection marking
Authors: Zhang Niina Ning 
Published: May 2022

AbstractWhy does an argument clause contain a meaningless complementizer in languages such as English and German, but not in Mandarin; and why does an adverbial clause occur with a meaningless correlative adverb in the matrix clause in Mandarin, but not in languages such as English and German? Extending the c-selection from one type of sisterhood to another type of sisterhood, this paper recognizes the modification relation as a kind of selection relation, in addition to the familiar kind of argument-taking selection relation. This research argues that dependency marking is seen in different types of sister relations. It shows how Mandarin uses modification markers systematically, but does not use argument markers, also systematically. The paper explains the existence of modification markers in various constructions in Mandarin and in various languages. It lets us gain a better understanding of language variations.
香港粵語「咗」的語法特點
Authors: Fan Xiaolei , Chan Kin Wing Kevin 
Published: May 2022

抽象的本文詳細分析香港粵語的體助詞「咗」的語法特點。較之北京話的「了1」，「咗」在現實句裡使用範圍更大，在非現實句裡使用範圍更小，在複雜短語裡須緊附於首個謂詞上，更容易用來表達持續性事件。我們推測，「咗」異於「了1」的這些特點主要有三個動因。第一，粵語是語序最偏VO型的漢語方言，「動後限制」較弱，它不懼動詞後帶複雜成分，相對地抗拒句末時體詞。第二，「咗」很可能源自附著義動詞「著」，這導致它排斥作表示客體損失義的動相補語，更容易用於表述持續性事件的謂語中。第三，「咗」的時體義略異於「了1」，這也會造成二者的使用差異。這項比較研究在漢語方言的整體格局方面亦有兩項發現。一方面，漢語的完整體標記分為「著」系和「了」系兩大組，它們有成系統的語法差異；另一方面，南北漢語在語序類型和時體範疇上的差異導致不同方言的完句條件有區別，漢語的完句研究不該集中於普通話，應該回歸到方言口語中。
海豐閩語持續體貌標記的特徵與來源
Authors: Xu Yuhang 
Published: May 2022

抽象的
閩語的持續體貌表現形式及標記多與表處所的介詞結構有關，此為閩語學界公認的事實。然而，處於語言接觸地帶的海豐閩語「動作」、「狀態」、「事件」持續體貌卻分別由[to35]、[nin53]、[tsu22]三種不同標記表示。三種持續體貌標記形式特徵各異，狀態、事件持續體貌標記更是來源不明。本文運用語言接觸理論，通過比較論證，證明海豐閩語動作持續標記[to35]源於譜系一致，地緣關係密切的粵東潮汕閩語，狀態持續標記[nin53]則源於區域內接觸頻繁的客家話，事件持續標記[tsu22]與廣東、海南閩語具有類型一致特徵，是閩語表處所介詞結構簡省的結果。海豐閩語持續體貌標記的特徵及來源，對與海豐閩語一樣處在多語多方言接觸地帶的漢語方言，具有類型學意義。
Elevated barrier height originated from electric dipole effect and improved breakdown characteristics in PtOx/β-Ga2O3 Schottky barrier diodes
Authors: Jian Guangzhong , Hao Weibing , Shi Zhongyu , Han Zhao , Zhou Kai , Liu Qi , He Qiming , Zhou Xuanze , Chen Chen , Zhou Yanguang , Zhao Xiaolong , Xu Guangwei , Long Shibing 
Published: May 2022

Abstract
The higher Schottky barrier height of PtOx/β-Ga2O3 Schottky barrier diode (SBD) was derived from the electric dipole effect of PtOx Schottky electrode. And the higher Schottky barrier height effectively improved the reverse breakdown characteristics of β-Ga2O3 SBD. In this work, PtOx/β-Ga2O3 and Pt/β-Ga2O3 SBDs were fabricated, and the Schottky barrier height of PtOx SBD increased with the increment of oxygen element component in PtOx electrode, which were all higher than the Schottky barrier height of Pt SBD. Kelvin probe force microscope measurement indicated that Fermi level pinning effect and the variation in work functions of Schottky electrodes were irrelevant to the higher barrier height. Moreover, with the increment of inserting PtOx layer thickness in Pt/PtOx/β-Ga2O3 SBDs, the Schottky barrier height increased from 1.32 eV to 1.82 eV. Bright-field scanning transmission electron microscopy image demonstrated that PtOx was mainly polycrystal with layer structure near the Schottky interface. The layer structure composed of Pt ions and O ions induced electric dipole effect, and the electric dipole effect led to the increase of Schottky barrier height for PtOx SBD. Lower leakage current density, higher breakdown voltages and more concentrated breakdown voltage distribution were obtained for PtOx SBDs. Furthermore, the barrier heights of PtOx SBDs gradually increased as the temperature raised, resulting in their reverse leakage current increased much more slowly with temperature than that of Pt SBD. The above results demonstrated that PtOx/β-Ga2O3 SBD had great potential in enhancing reverse blocking characteristics and high-temperature environment applications.
Nonunitary superconductivity in complex quantum materials
Authors: Ramires Aline 
Published: May 2022

AbstractWe revisit the concept of nonunitary superconductivity and generalize it to address complex quantum materials. Starting with a brief review of the notion of nonunitary superconductivity, we discuss its spectral signatures in simple models with only the spin as an internal degree of freedom. In complex materials with multiple internal degrees of freedom, there are many more possibilities for the development of nonunitary order parameters. We provide examples focusing on d-electron systems with two orbitals, applicable to a variety of materials. We discuss the consequences for the superconducting spectra, highlighting that gap openings of band crossings at finite energies can be attributed to a nonunitary order parameter if this is associated with a finite superconducting fitness matrix. We speculate that nonunitary superconductivity in complex quantum materials is in fact very common and can be associated with multiple cases of recently reported time-reversal symmetry breaking superconductors.
Self-organizing maps for efficient classification of flow regimes from gamma densitometry time series in three-phase fluidized beds
Authors: Picabea Julia , Maestri Mauricio , Salierno Gabriel , Cassanello Miryan , De Blasio Cataldo , Cardona María Angélica , Hojman Daniel , Somacal Héctor 
Published: May 2022

Abstract
The potential of artificial neural networks as a tool to classify and identify a change in the flow regime of a three-phase fluidized bed is studied. Particularly, the suitability of self-organizing maps (SOMs), unsupervised neural networks that visualize the data in a lower dimension, is evaluated. Statistical features of experimental time series determined in a three-phase (granulated carbon-air-water) fluidized bed are extracted as inputs to train the SOM. Photon-count time series are obtained along the fluidized bed vertical axis by gamma-densitometry at different operative conditions. Then, they are analyzed to determine the underlying flow regime indexes. When each input data is presented to the SOMs, a neuron is activated, giving a visual representation of the data. The resulting models show three different regions on the map for the homogenous, transition, and heterogeneous flow regimes. Once these regions are delimited, the map can quickly classify the equipment operating conditions. The ability of the SOMs to diagnose a flow transition is verified against visual observation and gas hold-up trends. The conclusions are tested for their sensitivity to alternative axial positions of the radiation source used for the densitometry.
Numerical analysis of damage mechanisms for 3D-printed sandwich structures using a meshless method
Authors: Castro Bruno Dorneles de , Magalhães Frederico de Castro , Campos Rubio Juan Carlos 
Published: May 2022

Abstract
Finite element analysis is a widely used simulation technique to analyze structural components and the mechanical behavior of materials under different loading conditions. The major steps involved in finite element simulations are the definition of the basic parameters and the discretization in elements of the component, also known as preprocessing, the analysis of the models and the post-processing by the representation and the interpretation of the obtained results. On the particular case of complex geometries obtained by fused deposition modeling, the most time consuming of these three steps is that of preprocessing, because on traditional finite element technology is require that the real geometry of the CAD model is simplified to be meshed and analyzed. Nowadays, different techniques have been proposed and developed with this objective: reduce costs in terms of time and specialized human resources because the workflow is easier and simpler. One of these methods is known as the meshless method, which do not require connection between nodes and are based on the interaction of the points of the geometry with the neighbors, so the processor analyzes the real CAD geometry and no simplifications are needed. The present work uses the meshless method based on the theory of external approximation as an alternative to the classic finite element method. In numerical simulations, the influence of core shape is evaluated on the failure mode of the 3D-printed lightweight structures. Three cell core patterns were numerically evaluated under tensile and three-point bending tests: out-of-plane hexagonal honeycomb, S-shape corrugated, and in-plane hexagonal honeycomb cores. The nucleation and propagation of cracks had more heterogeneous profiles for in-plane hexagonal honeycomb cores, showing greater unpredictability in the susceptible areas to failure. The numerical analysis with the meshless method showed a potential for a fast prediction and a low computational cost analysis.
Flat bands and topological properties of twisted bilayer WSe2 under external stimuli
Authors: Wang Yan , Yu Gui-qiang , Luo Guo-yu , Li Zhi-qiang 
Published: May 2022

Abstract
We present systematic calculations on the electronic band structures and topological properties of twisted bilayer WSe2 with twist angle near 1° under different strains, pressures and vertical electric fields. We find that extremely narrow bandwidth less than 1 meV can be obtained for the top two valence bands for a wide range of strain smaller than 2%. Remarkably, the minimum bandwidth with strain around 1.8% is very robust under different pressures and electric fields, so the strain-induced flat band provides a robust 2D system for studying of electron strong correlation. The band gaps between the top valance bands increase significantly under pressure and vertical electric field, offering effective approaches for band engineering. Furthermore, we show that vertical electric field can lead to topological transitions for the flat bands, which are analyzed in details from a close examination of the band touching process. Our results not only provide new insights into the flat bands and their topological properties under various external stimuli in this versatile moiré superlattice system, but also reveal the important parameter spaces for exploring its novel physics in future studies.
Effect of SnS thin film thickness on visible light photo detection
Authors: Alagarasan Devarajan , Hegde S S , Varadharajaperumal S , Aadhavan R , Naik R , Shkir Mohd , Algarni H , Ganesan R 
Published: May 2022

Abstract
In this study, SnS thin films of various thicknesses (500 nm–700 nm) were prepared by the thermal evaporation technique for potential photodetector application. High purity SnS prepared at 1000 °C is used to deposit thin films at room temperature. The prepared SnS thin films were characterized to assess the thickness effect on the crystallite size, morphology, transmittance, band gap, and photo-sensing properties. SnS pure phase confirmed through XRD and Raman spectral analysis. Among the fabricated SnS thin films, the sample having a thickness of 650 nm showed better crystallinity with higher crystallite size and preferred orientation of crystallites. SnS grew plate-like-columnar grain morphology of different widths and thicknesses which is confirmed by FESEM results. The UV–Vis studies showed a minimum band gap value obtained for 650 nm thickness film. The 650 nm thickness SnS films have a highest photo response of 6.72 × 10−1 AW−1, external quantum efficiency (EQE) of 157%, and detectivity of 14.2 × 109 Jones. The transient photo-response analysis showed the 650 nm SnS thin film has a 5.3 s rise and 5.1 s fall duration, which is better suitable for photodetector applications compared to other samples.
Towards multifunctional applications of Fullerene-filled (PVA-PEG) polymeric nanocomposite films: structural, optical, and electrical properties
Authors: Mohammed M I , Yahia I S 
Published: May 2022

Abstract
Via casting method, Polyvinyl alcohol (PVA) and polyethylene glycol (PEG) blend matrix (80/20 wt %) based with fullerene (C60) (i.e., (PVA–PEG)/C60) polymeric nanocomposite (PNC) films have been prepared for optoelectronic devices. The X-ray diffractometer (XRD) and Fourier transform infrared (FTIR) analysis have been used to examine the structural behavior of these PNC films. The absorption coefficient derived from Beer-Lambert’s equation was used to determine energy bandgap (E

g
), and Urbach’s energy (E

u
) values. The nanocomposite films bandgap was lowered to 4.05 eV for indirect transition and 4.98 eV for direct transition. Because of surface plasmon absorption, the extinction index (k) rises with a doping concentration in nanocomposite films. The connections between bandgap and refractive index (n

av
) were investigated using several empirical formulas to arrive at an average value for n. The nonlinear susceptibility χ
(3) increased from 1.23 × 10−12 esu to 1.82 × 10−12 esu and from 7.099 × 10−13esu to 8.87 × 10−13 for indirect and direct transition, respectively. The nonlinear refractive index (n
2) increased from 2.146 × 10−11 esu to 3.062 × 10−11 esu and from 1.306 × 10−11esu to 1.59 × 10−11 esu for indirect and direct transition, respectively. The nanocomposites’ optical limiting performance and laser beam absorption capability were examined. Doping PVA–PEG with C60 in these nanocomposites at room temperature has been studied for its impact on complex dielectric permittivity, electric modulus characteristics, and AC electrical conductivity. The dielectric properties reduced with increasing frequency and raised with rising temperature and discussed as evidence of interfacial polarization. AC conductivity levels that varied with temperature followed Arrhenius’s law. According to our findings, the newly developed polymeric nanocomposite films are well-suited for use in electrical and optoelectronic devices.
Enhanced entanglement and quantum steering of directly and indirectly coupled modes in a magnomechanical system
Authors: Sohail Amjad , Ahmed Rizwan , Zainab Rida , Yu Chang- shui 
Published: May 2022

Abstract
This study is based on a theoretical proposal for quantum steering, non-locality, and entanglement in a two microwave cavities based magnomechanical system. The system is composed of two microwave (MW) cavity mode photons, phonons associated with mechanical mode and a magnon mode. We have employed a standard damping approach and found that steerability and entanglements among different bipartite subsystems strongly depend upon the detuning of indirectly coupled cavity mode and effective magnon detuning. One/two-way quantum Steering and non-local correlation have been found in the system for different choices of bipartitions. In addition, entanglement generated in the system enhances and has shown to be more robust against the thermal effects, as compared with the earlier studies. Interestingly, we have shown that the magnomechanical entanglements among different bipartitions have a complementary relation due to the transfer entanglement. This shows an additional insight into the system dynamics which shows that there exists a ‘tie-up’ relationship among these bipartitions. The present magnomechanical system will open new perspectives in quantum tasks that demand the entanglement of microwave cavity fields.
Study the effect of mercuric ions concentration on some optical properties of Polyvinyl (alcohol/pyrrolidone) blend film
Authors: Morad Ibrahim , Salah Mohamed , Ali H Elhosiny , Khairy Yasmin 
Published: May 2022

Abstract
In the present work, the casting process was used to prepare polymeric films based on Polyvinyl alcohol/Polyvinylpyrrolidone (PVA/PVP) loaded with various weight percentages of HgCl2. The morphology and the microstructure of the synthesized samples were studied using Scanning Electron Microscope (SEM), Atomic force microscope (AFM), x-Ray Diffraction (XRD), and Fourier-transform infrared spectroscopy (FT-IR) techniques. UV/VIS/NIR spectrophotometer was implemented to scientifically check the optical elucidation. All films between the two phases are characterized by substantial integration of HgCl2 and PVA/PVP. The scanning electron microscope shows a morphology modification of the blend surface with the mercuric chloride substantive. The roughness calculated from AFM images increased with increasing HgCl2. The agglomeration of the particles made a significant influence on the optical transmittance properties of pure PVA/PVP. Due to the growth of distortion and imperfection in the structure of the blend matrix by the addition of HgCl2, there is a modification in the engineering bandgap, localized state’s order, coefficient of absorption, and optical conductivity. The dispersion and oscillator energies were calculated using the Wemple and Di Domenico (DDW) model for a single oscillator. Various theoretical relations between energy gaps and refractive indices were used to calculate the average refractive index of each sample. Further, the nonlinear refractive index and optical susceptibilities of polymer composite samples were enhanced by increasing the percentage of HgCl2. The influence of loading on the optical limiting of the blend was investigated via He-Ne and green diode lasers. The results indicate the ability to use our flexible films in various optoelectronic devices.
Constraining branon dark matter from observations of the Segue 1 dwarf spheroidal galaxy with the MAGIC telescopes
Authors: Miener T. , Nieto D. , Gammaldi V. , Kerszberg D. , Rico J. 
Published: May 2022

Abstract
We present the first search for signatures of brane-world extra-dimensional dark matter (DM) in the very-high-energy gamma-ray band by scrutinizing observations of the dwarf spheroidal galaxy Segue 1 with the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescope system. Branons are new degrees of freedom that appear within flexible brane-world models: they are weakly interacting massive particles and natural DM candidates. The ground-based gamma-ray telescopes MAGIC could indirectly detect branon DM in the multi-TeV mass range by observing secondary products of DM annihilation into Standard Model particles. In the absence of a signal, we place constraints on the branon DM parameter space by using a binned likelihood analysis of almost 160-hours deep exposure on the Segue 1 dwarf spheroidal galaxy by the MAGIC telescopes. Our most stringent limit to the thermally-averaged annihilation cross-section (at 95% confidence level) corresponds to 〈σv〉 ≃ 1.4 × 10-23 cm3 s-1 at a branon mass of ∼ 0.7 TeV.
A new estimator for phase statistics
Authors: Munshi D. , Takahashi R. , McEwen J.D. , Kitching T.D. , Bouchet F.R. 
Published: May 2022

Abstract
We introduce a novel statistic to probe the statistics of phases of Fourier modes
in two-dimensions (2D) for weak lensing convergence field κ.
This statistic contains completely independent information compared to that contained in observed power spectrum.
We compare our results against state-of-the-art numerical simulations as a function
of source redshift and find good agreement with theoretical predictions.
We show that our estimator
can achieve better signal-to-noise compared to the commonly employed
statistics known as the line correlation function (LCF). Being a two-point
statistics, our estimator is also easy to implement in the presence of complicated noise and mask,
and can also be generalised to higher-order.
While applying this estimator for the study of lensed CMB maps,
we show that it is important to include post-Born corrections in the study of statistics of phase.
Shell-model study on properties of proton dripline nuclides with $Z, N$ = 30-50 including uncertainty analysis
Authors: Cai Boshuai , Chen Guangshang , Yuan Cenxi , Jian-Jun He 
Published: May 2022

Abstract
The binding energies and proton separation energies of nuclides with $Z, N = 30-50$ \textcolor{blue}{are investigated,} based on the shell model with an uncertainty analysis through statistical methods. Several formulas are used to obtain the binding energies and proton separation energies according to the shell-model calculations. The non-parametric Bootstrap method is applied to establish an uncertainty decomposition and recomposition framework. Moreover, it \textcolor{blue}{is used to estimate the stability of proton(s) emission} for each nuclide. Two formulas for calculating the binding energies with a systematic uncertainty of $\sim0.3$ MeV are proposed, and a reliable extrapolation ability is examined. These binding energy formulas deduce similar forms of respective $S_{p}$ and $S_{2p}$ energies, which predict the extension of the nuclear boundary of this region. A nice description of the binding energies and proton separation energies is provided. \textcolor{blue}{The one- and two-proton separation energies and partial half-lives of proton emitting are predicted, thus showing a new dripline.} Besides, there are 30 unstable nuclides predicted to be bound against proton(s)-emission. These nuclear properties will be useful in nuclear astrophysics.