Miracle-dz/UniFAR-FTUs huggingface dataset:
Completely Subradiant Multi‐Atom Architectures Through 2D Photonic Crystals

Following recent advances in the manipulation of atoms trapped near 1D waveguides and proposals to use surface acoustic waves on piezoelectric substrates for the same purpose, the potential of two‐dimensional platforms is shown. Directional emission of atoms near photonic crystal slabs with square symmetry is used, in the ideal case, to build perfect subradiant states of 2 distant atoms, possible in 2D only for finite lattices with perfectly reflecting boundaries. These allow the design of massively parallel 1D arrays of atoms above a single crystal, useful for multi‐port output of nonclassical light, by exploiting destructive interference of guided resonance modes. Directionality of the emission is shown to be present whenever a linear iso‐frequency manifold is present in the dispersion relation of the crystal. Multi‐atom radiance properties can be predicted from a simple cross‐talk coefficient of a master equation, in good agreement with exact atom‐crystal dynamics, showing its predictive power. Departing from the ideal theoretical case, possible experimental issues in photonic crystal implementations are also discussed, and an outlook of other relevant modern platforms for 2D propagation of excitations is given.
Sensitivity of Seismically Cued Antineutrino Detectors to Nuclear Explosions

We evaluate the sensitivity of large, gadolinium-doped water detectors to antineutrinos released by nuclear fission explosions, using updated signal and background models and taking advantage of the capacity for seismic observations to provide an analysis trigger. Under certain realistic conditions, the antineutrino signature of a 250-kiloton pure fission explosion could be identified several hundred kilometers away in a detector about the size of the largest module currently proposed for a basic physics experiment. In principle, such an observation could provide rapid confirmation that the seismic signal coincided with a fission event, possibly useful for international monitoring of nuclear weapon tests. We discuss the limited potential for seismically cued antineutrino observations to constrain fission yield, differentiate pure fission from fusion-enhanced weapon tests, indicate that the seismic evidence of an explosion had been intentionally masked, or verify the absence of explosive testing in a targeted area. We conclude that advances in seismic monitoring and neutrino physics have made the detection of explosion-derived antineutrinos more conceivable than previously asserted, but the size and cost of sufficiently sensitive detectors continue to limit applications.
The young star population of Lynds 1188

We present new results on the young star population of the Lynds~1188 molecular cloud, associated with the Cepheus Bubble, a giant interstellar shell around the association Cep~OB\,2. In order to reveal the star-forming scenario of the molecular cloud located on the supershell, and understand the history of star formation in the region, we identified and characterized young star candidates based on an H$\alpha$ emission survey and various published photometric datasets. Using Gaia DR2 astrometry we studied the spatial distribution of the young star candidates and isolated three groups based on their distances. We constructed spectral energy distributions of our target stars, based on Pan-STARRS, 2MASS, {\it Spitzer} and {\it WISE} photometric data, estimating their spectral types, extinctions, and luminosities. We estimated masses by means of pre-main-sequence evolutionary models, and derived accretion rates from the equivalent width of the H$\alpha$ line. We studied the structure of the cloud by constructing a new extinction map, based on Pan-STARRS data. Our results show that the distribution of low-mass young stars in L1188 is well correlated with that of the dust and mole\-cular gas. We identified two small, compact clusters and a loose aggregate of young stars. We found that star formation in L1188 started about 5 million years ago. The apparent age gradient of young stars across the cloud and the ammonia cores located to the east of the optically visible young stellar groups support the scenario of star formation propagating away from the centre of the Cepheus Bubble.
Mira science with interferometry: a review

Model-predicted and observed properties of the brightness distribution on M-type Mira disks are discussed. Fundamental issues of limb-darkening and diameter definition, of assigning observational data to diameter-type quantities and of interpreting such quantities in terms of model diameters are outlined. The influence of model properties upon interpretation of measured data is clarified. The dependence of the center-to-limb variation (CLV) of intensity on wavelength, on stellar parameters and on variability phase and cycle may be used for analyzing the geometrical and physical structure of the Mira atmosphere, for determining fundamental stellar parameters, and for investigating the quality of models. Desirable future observations include simultaneous observations in different spectral features at different phases and cycles, observation of the position of the shock front and observation of the time- and wavelength-dependence of deviations from spherical symmetry.
Domestic noir: Fictionalising trauma survival

How can authors fictionalise trauma without cognitively suffering intense vicarious trauma in that writing process? This paper explores this question through the lens of fictionalised Intimate Partner Violence (IPV) representations in domestic noir narratives. Domestic noir operates within the constraints of a domestic space that is subverted from a sanctuary to a potential psychological space of tyranny or violence. This may include reiterative chronic traumas such as IPV or other forms of relationship violence. Viewed as a trauma fiction, domestic noir is peculiarly suited to interrogating the survivor narrative. The domestic noir models focused on IPV develop a complex combination of the victim, survivor and hero in their representations of traumatised protagonists. The effects of writing about IPV trauma may be transformed by this fictionalising into an emerging hero-as-survivor narrative. The Emerging Hero Process developed and elaborated within this paper indicates, through reiterative cycles of the protagonist’s emotional and behavioural response, their capacity to summon the heroic act that may enable a reframed and reconciled survivor outlook. The Emerging Hero Process has evolved into an IPV writing model of a survivor narrative that may also filter or reposition the vicarious trauma of the writing process.
Spin Domains in One-Dimensional Conservative Polariton Solitons

We report stable orthogonally polarised domains in high-density polariton solitons propagating in a semiconductor microcavity wire. This effect arises from spin dependent polariton-polariton interactions and pump-induced imbalance of polariton spin populations. The interactions result in an effective magnetic field acting on polariton spin across the soliton profile, leading to the formation of polarisation domains. Our experimental findings are in excellent agreement with theoretical modelling taking into account these effects.
TireEye: Optical On-board Tire Wear Detection

Automotive tire tread depth has a major influence on a car's safety and thus has to be closely monitored. However, there is currently no on-board solution that can measure tire wear with an accuracy of less than 1 mm. TireEye is an optical device mounted inside the wheel well and facing towards the road. It records the cross-section of the longitudinal tread groove and extracts its outline by means of adaptive Canny edge detection. The tread wear indicators serve es means to calibrate the scale since they provide the minimum tread depth.
Self-sustaining Star Formation Fronts in Filaments during the Cosmic Dawn

We propose a new model for the ignition of star formation in low-mass halos by a self-sustaining shock front in cosmic filaments at high redshifts. The gaseous fuel for star formation resides in low-mass halos that cannot cool on their own due to their primordial composition and low virial temperatures. We show that star formation can be triggered in these filaments by a passing shock wave. The shells swept up by the shock cool and fragment into cold clumps that form massive stars via thermal instability on a timescale shorter than the front’s dynamical timescale. The shock, in turn, is self-sustained by energy injection from supernova explosions. The star formation front is analogous to a detonation wave, which drives exothermic reactions powering the shock. We find that sustained star formation would typically propel the front to a speed of ∼300–700 km s−1 during the epoch of reionization. Future observations by the James Webb Space Telescope could reveal the illuminated regions of cosmic filaments, and constrain the initial mass function of stars in them.
A Probability Distribution for Quantum Tunneling Times

We propose a general expression for the probability distribution of real-valued tunneling times of a localized particle, as measured by the Salecker-Wigner-Peres quantum clock. This general expression is used to obtain the distribution of times for the scattering of a particle through a static rectangular barrier and for the tunneling decay of an initially bound state after the sudden deformation of the potential, the latter case being relevant to understand tunneling times in recent attosecond experiments involving strong field ionization.
The Effect of Preharvest Application of Arginine on the Postharvest Quality of Sweet Cherry Fruits during Storage

ABSTRACT The quality of sweet cherry fruits decrease rapidly after harvest and in some cases does not reach the consumers properly due to the time require for transferring and market. Therefore, using chemical compounds is essential to increase durability and maintain its quality. This study was conducted to investigate the effects of arginine on postharvest quality of sweet cherry fruits. The sweet cherry fruits (Prunus avium L. cv TakDanehe Mashhad) were sprayed with arginine (0, 200, and 400 μM) one month before harvest. Fruits were harvested at commercial maturity stage according to acceptable color standards. After harvest, the fruits were transferred to the laboratory and immediately kept in cold storage with temperature of 1°C with 90–95% relative humidity (RH) for 20 days. The results showed that in treated fruits, electrolyte leakage, active oxygen production, and lipid peroxidation were decreased. The activity of antioxidant enzymes including ascorbate peroxidase, catalase, and superoxide dismutase was increased compared to control. The treated fruits with arginine 400 µM showed the highest enzymatic activity during cold storage. The percentage of chilling injury and fresh weight loss in treated fruits has decreased comparing control fruits. According to the results lowest amount of pH observed in fruits treated with arginine 400 µM. Arginine increased the amount of titratable acid, soluble solids, and vitamin C, as well the firmness of fruits. As short, arginine preharvest treatment at 400 µM concentration improved the postharvest quality of sweet cherry fruits.
Large-scale numerical investigation of excited states in poly(para-phenylene)

A density matrix renormalisation group scheme is developed, allowing for the first time essentially exact numerical solutions for the important excited states of a realistic semi-empirical model for oligo-phenylenes. By monitoring the evolution of the energies with chain length and comparing them to the experimental absorption peaks of oligomers and thin films, we assign the four characteristic absorption peaks of phenyl-based polymers. We also determine the position and nature of the nonlinear optical states in this model.
Locally Non-centrosymmetric Superconductivity in Multilayer Systems

Although multilayer systems possess global inversion symmetry, some of the layers lack local inversion symmetry because no global inversion centers are present on such layers. Such locally non-centrosymmetric systems exhibit spatially modulated Rashba spin–orbit coupling. In this study, the superconductivity in multilayer models exhibiting inhomogeneous Rashba spin–orbit coupling is investigated. We study the electronic structure, superconducting gap, and spin susceptibility in the superconducting state with mixed parity order parameters. We show the enhancement of the spin susceptibility by Rashba spin–orbit coupling and interpret it on the basis of the crossover from a centrosymmetric superconductor to a non-centrosymmetric superconductor. It is also shown that the spin susceptibility is determined by the phase difference of the order parameter between layers and is nearly independent of the parity mixing of order parameters. An intuitive understanding is given on the basis of the analytic expression of.
Dielectric properties of paraffin wax emulsion/copper azole compound system treated wood

Abstract: In order to investigate the interactions among the waterproof agent, preservative and wood, the dielectric relaxation was measured for untreated wood and wood samples treated with different paraffin wax emulsion/copper azole (CA) compound systems at oven-dried and air-dried state, respectively. The Cole-Cole plot analysis was then conducted and the results were as follow. At oven-dried state (-60 °C), the dielectric characteristics of paraffin wax emulsion treated wood were basically the same as those of untreated wood; CA treatment increased the dielectric constant but decreased the dielectric loss factor and the trends of these two characteristic parameters were more remarkable at higher CA concentration; the dielectric properties of compound system treated wood under C4A grade were similar to those of CA treated wood but an increase in impregnation of paraffin wax emulsion gave rise to decreased dielectric constant and increased loss factor. At air-dried state (20 °C, 65% RH), compared with untreated samples, both the dielectric constant and loss factor were lower in waterproofing agent treated wood and these parameters reduced with increasing waterproofing agent concentration; for CA treated samples, the values of dielectric parameters increased and the trend was similar to those treated with the compound system under C4A grade.
EVIDENCE FOR A RECEDING DUST SUBLIMATION REGION AROUND A SUPERMASSIVE BLACK HOLE

The near-IR emission in Type 1 active galactic nuclei (AGNs) is thought to be dominated by the thermal radiation from dust grains that are heated by the central engine in the UV/optical and are almost at the sublimation temperature. A brightening of the central source can thus further sublimate the innermost dust, leading to an increase in the radius of the near-IR emitting region. Such changes in radius have been indirectly probed by the measurements of the changes in the time lag between the near-IR and UV/optical light variation. Here we report direct evidence for such a receding sublimation region through the near-IR interferometry of the brightest Type 1 AGN in NGC 4151. The increase in radius follows a significant brightening of the central engine with a delay of at least a few years, which is thus the implied destruction timescale of the innermost dust distribution. Compiling historic flux variations and radius measurements, we also infer the reformation timescale for the inner dust distribution to be several years in this galactic nucleus. More specifically and quantitatively, we find that the radius at a given time seems to be correlated with a long-term average of the flux over the previous several (∼6) years, instead of the instantaneous flux. Finally, we also report measurements of three more Type 1 AGNs newly observed with the Keck interferometer, as well as the second epoch measurements for three other AGNs.
STUDY ON CEMENT RECYCLING SYSTEM USING SODIUM GLUCONATE

Most ready-mixed concrete plants have a problem of construction waste sludge, which causes environmental pollution and economic loss. A cement sludge recycling system is therefore highly desirable. Japanese Industrial Standard（JIS）A 5308 permits the addition of 3％ sludge（as solid state）to cement in concrete. However, it is pointed out that a reduction of fluidity and increase in water demand occur upon utilization of sludge. To achieve more widespread recycling of sludge by using set-retarders, the authors have to establish the evaluation method of residual cement content of sludge.The rate of heat liberation of ordinary Portland cement paste was measured by using conduction calorimeter. And the residual amount of sodium gluconate was measured by Total Organic Carbon Analyzer（TOC). The residual alite amount of cement paste by XRD quantity method was related to the heat liberation of cement paste. It is concluded that the residual alite amount of cement paste can be estimated by conductive type calorimeter. The amount of residual alite of cement paste can be evaluated swiftly by using conductive type calorimeter and Mg（NOз）₂・6H₂O. When the Mg（NOз)₂・6H₂O was added, the retardation of cement hydration with sodium gluconate was decreased. It is considered that the acceleration mechanism of Mg（NOз）₂・6H₂O is the decreasing of sodium gluconate concentration in liquid phase. スラッジ水中に含まれる残存セメント分を有効活用するため、グルコン酸ナトリウムを用いて水和反応を制御したスラッジ水中に残存しているセメント量を迅速に評価する方法を確立することを目的として検討を加えた。 XRDより定量した残存エーライト量と熱量の測定結果から推定した残存エーライト量には相関関係が確認された。 また、硝酸マグネシウム及び熱量計を用いてスラッジを模擬したセメントペースト中の残存エーライト量を評価できることを明らかとした。 硝酸マグネシウムがグルコン酸ナトリウムにより遅延されたセメントの水和を開始するメカニズムとしては液相に残存しているグルコン酸ナトリウム濃度を低下させるためであると推察した。
An X-ray spectroscopic search for dark matter and unidentified line signatures in the Perseus cluster with Hitomi

We present results of a search for unidentified line emission and absorption signals in the 2-12keV energy band of spectra extracted from Perseus Cluster core region observations obtained with the 5eV energy resolution Hitomi Soft X-ray Spectrometer. No significant unidentified line emission or absorption is found. Line flux upper limits (1 sigma per resolution element) vary with photon energy and assumed intrinsic width, decreasing from 100 photons cm$^{-2}$ s$^{-1}$ sr $^{-1}$ at 2keV to $<10$ cm$^{-2}$ s$^{-1}$ sr $^{-1}$ over most of the 5-10 keV energy range for a Gaussian line with Doppler broadening of 640 km/s. Limits for narrower and broader lines have a similar energy dependence and are systematically smaller and larger, respectively. These line flux limits are used to constrain the decay rate of hypothetical dark matter candidates. For the sterile neutrino decay rate, new constraints over the the mass range of 4-24 keV with mass resolution better than any previous X-ray analysis are obtained. Additionally, the accuracy of relevant thermal spectral models and atomic data are evaluated. The Perseus cluster spectra may be described by a composite of multi-temperature thermal and AGN power-law continua. Superposed on these, a few line emission signals possibly originating from unmodeled atomic processes (including Si XIV and Fe XXV) are marginally detected and tabulated. Comparisons with previous X-ray upper limits and future prospects for dark matter searches using high-energy resolution spectroscopy are discussed.
Spontaneous Frenkel pair formation in zirconium carbide

With density functional theory we have performed molecular dynamics simulations of ZrC, which displayed spontaneous carbon Frenkel pair formation at a temperature of $3200\phantom{\rule{0.28em}{0ex}}\mathrm{K}$, some 500\ifmmode^\circ\else\textdegree\fi{} below the melting point. To understand this behavior, rarely seen in equilibrium simulations, we quenched and examined a set of lattices containing a Frenkel pair. Five metastable structures were found, and their formation energies and electronic properties were studied. Their thermal generation was found to be facilitated by a reduction of between 0.7 and 1.5 eV in formation energy due to thermal expansion of the lattice. With input from a quasiharmonic description of the defect-free energy of formation, an ideal solution model was used to estimate lower bounds on their concentration as a function of temperature and stoichiometry. At 3000 K (0.81 of the melting temperature) their concentration was estimated to be 1.2% per mole in a stoichiometric crystal, and 0.3% per mole in a crystal with 10% per mole of constitutional vacancies. Their contribution to heat capacity, thermal expansion, and bulk modulus was estimated.
Surface modes and vortex formation in dilute Bose-Einstein condensates at finite temperatures

The surface mode spectrum is computed self-consistently for dilute Bose-Einstein condensates, providing the temperature dependence of the surface-mode-induced vortex nucleation frequency. Both the thermodynamic critical frequency for vortex stability and the nucleation frequency implied by the surface excitations increase as the critical condensation temperature is approached from below. The multipolarity of the destabilizing surface excitation decreases with increasing temperature. The computed finite-temperature critical frequencies support the experimental observations and the zero-temperature calculations for vortex nucleation.
NGC 6067: a young and massive open cluster with high metallicity

This research is partially supported by the Spanish Government Ministerio de Economia y Competitividad under grants BES 2013-065384 and AYA2015-68012-C2-2-P (MINECO/FEDER). AM acknowledges support from the Ministerio de Educacion, Cultura y Deporte through grant PRX15/00030.
A Systematic Mapping on Player's Profiles: Motivations, Behavior, and Personality Characteristics

Digital games have become part of the daily life of a large part of the world population, reaching audiences of different ages, genders, and cultures. Games are also becoming an increasingly explored research topic in Human-Computer Interaction (HCI), and several studies have sought to deepen the knowledge about players, identifying individual differences. Although the literature is rich in works that typify and classify players, the lack of objective comparisons can make it difficult to adopt such types to support game design or future research. Thus, this research investigates players' taxonomies and typologies regarding their motivations, behavior, and personality characteristics, analyzing how they explore these traits. We conducted a systematic mapping of the literature and analyzed 19 studies that propose or update players' types, observing how they explore the above mentioned traits. The main contribution of this paper is to offer an overview of the identified taxonomies and typologies, comparing them and mapping their attributes and applications. Such knowledge is a tool for designing games and gamified systems and can support game designers to promote engagement and motivation in complementary ways in their games. It also allows researchers and practitioners to compose a multidimensional view of the different players' types.