Miracle-dz/UniFAR-FTUs huggingface dataset:
Digital upgrade for parking zone, by parking assist system

This paper seeks to create a digital transformation plan for the traditional parking that has high demand for such spaces. It covers three main areas that include the inefficiency of traditional garage module, research of usable technologies and how these applications can be used to achieve digital transformation. It is set against the backdrop of the fact that traditional parking lots have low efficiency, high labor costs and occupy more space. Therefore, the system of the harbor and warehouse that the report comes up with uses a digital assist system backed by the relevant technologies. The paper also appreciates the fact that multiple technologies can be used to construct and improve the parking system, including technologies for locating vehicles and directing them to the desired destinations. After exploring the implementation for digital guidance system, it provides the concept that can be applied to achieve digital transformation. It applies a navigation app that easily assists the drivers to know the available parking lots and park within them. In addition, the digital transformation can be used to build, monitor and help in the navigation of vehicles to the parking lot based on the idea that a robust guidance system can enhance the efficiency of these parking lots. Eventually, conclusions are demonstrated that the employment of big digital platforms is key in creating an efficient parking system for drivers and their vehicles.
Two high-velocity stars shot out from the core of the globular cluster 47 Tucanae

We report the discovery of two high-velocity stars in the core of the globular cluster 47 Tucanae. Located respectively at about 3″ and 38″ from the center, they have radial velocities relative to the cluster equal to −36.7 and +32.4 km s −1 , corresponding to 4.0 and 3.6 times the velocity dispersion in the core, which is equal to σ p (core)=9.1 km s −1 . These velocities are of the order of, or larger than, the central escape velocity estimates
Perceptual cues in Korean fricatives

The current study explores the production and perception of two Korean fricatives - fortis [s’] and non-fortis (plain) [s]. Production data from 10 speakers were examined to investigate the acoustic cues that distinguish the two fricatives in different vowel contexts (high vowel /i/ vs. low vowel /a/). Measures included rise time, intensity, center of gravity (COG), F0, H1-H2, and CPP, as well as frication, aspiration, and subsequent vowel duration. COG and vowel duration consistently distinguished the two fricatives; additional cues varied across vowel contexts. For the /i/ context, intensity and F0 differed across the fricatives; for the /a/ context, rise time, H1-H2 and CPP differed across the fricatives. Four perceptual identification experiments were conducted with sixty native Korean listeners. Experiment 1 established that listeners can distinguish the two fricatives in intact natural syllables. In Experiments 2 and 3, listeners heard only the excised consonantal or vocalic segment. For the /a/ con.
Cerebral Ischemic Preconditioning Aggravates Death of Oligodendrocytes

Neurodegeneration can benefit from ischemic preconditioning, a natural adaptive reaction to sublethal noxious stimuli. Although there is growing interest in advancing preconditioning to preserve brain function, preconditioning is not yet considered readily achievable in clinical settings. One of the most challenging issues is that there is no fine line between preconditioning stimuli and lethal stimuli. Here, we show deleterious effect of preconditioning on oligodendrocyte precursor cells (OPCs). We identified Bcl-2/adenovirus E1B 19-kDa interacting protein 3 (BNIP3), a mitochondrial BH3-only protein specifically involved in OPCs loss after preconditioning. Repeated ischemia stabilized BNIP3 and increased the vulnerability of OPCs to subsequent ischemic events. BNIP3 became mitochondrial-bound and was concurrent with the dysfunction of monocarboxylate transporter 1 (MCT1). Inhibition of BNIP3 by RNAi or necrostatin-1 (Nec-1) and knocking out of BNIP3 almost completely prevented OPCs loss and preserved white matter integrity. Together, our results suggest that the unfavorable effect of BNIP3 on OPCs should be noted for safe development of ischemic tolerance. BNIP3 inhibition appears to be a complementary approach to improve the efficacy of preconditioning for ischemic stroke.
Three-Dimensional Computations of Equivalent Potential Vorticity

Abstract Moore and Lambert showed how a quantity called equivalent potential vorticity (EPV) can provide quantitative values to assess conditional symmetric instability (CSI), also known as slantwise instability. Expanding the EPV equation into three dimensions, the equation becomes a function of the geostrophic wind shell, the horizontal equivalent potential temperature gradient, the absolute geostrophic vorticity, and the vertical equivalent potential temperature gradient, all of which are easily computed from gridded data. The equation reduces further by recognizing that the geographic wind shear is a function of the horizontal equivalent potential temperature gradient in a saturated environment. This reduced equation is difficult to evaluate quantitatively because of its dependence on the local value of the moist adiabatic lapse rate. Nevertheless, it shows that horizontal temperature gradients will always act to promote slantwise convection. EPV is a mixture of upright potential instability and slant.
In Silico Modelling to Assess the Electrical and Thermal Disturbance Provoked by a Metal Intracoronary Stent during Epicardial Pulsed Electric Field Ablation

Background: Pulsed Electric Field (PEF) ablation has been recently proposed to ablate cardiac ganglionic plexi (GP) aimed to treat atrial fibrillation. The effect of metal intracoronary stents in the vicinity of the ablation electrode has not been yet assessed. Methods: A 2D numerical model was developed accounting for the different tissues involved in PEF ablation with an irrigated ablation device. A coronary artery (with and without a metal intracoronary stent) was considered near the ablation source (0.25 and 1 mm separation). The 1000 V/cm threshold was used to estimate the ‘PEF-zone’. Results: The presence of the coronary artery (with or without stent) distorts the E-field distribution, creating hot spots (higher E-field values) in the front and rear of the artery, and cold spots (lower E-field values) on the sides of the artery. The value of the E-field inside the coronary artery is very low (~200 V/cm), and almost zero with a metal stent. Despite this distortion, the PEF-zone contour is almost identical with and without artery/stent, remaining almost completely confined within the fat layer in any case. The mentioned hot spots of E-field translate into a moderate temperature increase (<48 °C) in the area between the artery and electrode. These thermal side effects are similar for pulse intervals of 10 and 100 μs. Conclusions: The presence of a metal intracoronary stent near the ablation device during PEF ablation simply ‘amplifies’ the E-field distortion already caused by the presence of the vessel. This distortion may involve moderate heating (<48 °C) in the tissue between the artery and ablation electrode without associated thermal damage.
Harvesting Wood Residues for Energy Production from an Oak Coppice in Central Italy

The sustainable management of coppice forests and the valorization of forest residues represent key activities for the development of wood for the energy supply chain. The present study focused on the quantification and the physical/energetic characterization of oak residues (branches and tops) obtained from a coppice stand in central Italy. The study also evaluated the performance of the technologies used for the harvest and chipping operation. The wood residues obtained were mainly tree branches and tops and accounted for 19.8% of the total biomass extracted from the forest. Taking into account the standards of wood chips for energy use, the material produced was included in the quality class B. Summarizing, the results obtained in this work indicated that opportune forest operations can provide a significant amount of wood residues (mainly branches and tops) from oak coppices in central Italy and that the derived material can reach medium commercial features, being exploitable in different bioenergy production scenarios.
CN Abundance Inhomogeneities in the Globular Cluster Messier 4 (NGC 6121): Results Based on Merged Data Sets from the Literature

In this paper, we investigate the behavior of the λ3883 CN absorption bands in the spectra of red giants in the globular cluster Messier 4. Data from three literature sources, including the original survey of Norris, have been combined to produce a picture of the CN band strength over an absolute magnitude range of − 2.5<MV < + 0.5. In addition, measurements of carbon and oxygen abundances, as well as radial velocities, have been compiled from the literature and used to compare the properties of the CN‐strong and CN‐weak groups of giants evident in the cluster. Large CN differences are present among both red giant branch and asymptotic giant branch stars. Although the CN‐weak giants have higher [C/Fe] and [O/Fe] abundances on average than the CN‐strong giants, there is a considerable range in the abundances of both elements among the CN‐strong stars. The radial velocity dispersion of the available sample of CN‐strong stars is identical within the observational errors to that of the CN‐weak stars. A small fraction of cluster giants have CN bands of intermediate strength, and there is a curious trend for these red giants to be concentrated within the inner five core radii of the cluster, although this is still within the uncertainties of small‐sample statistics. The observations are consistent with a hybrid picture for the origin of CNO element inhomogeneities in M4. Deep mixing within stars on the upper red giant branch (MV < - 1.0) is indicated by the relatively low [C/Fe] or [O/Fe] abundances of these giants. However, the large scatter in [C/Fe] and [N/Fe] among fainter stars (at MV≳0) suggests the possibility of a pre‐RGB component to the abundance inhomogeneities. Accretion of material from a central reservoir of stellar ejecta, or mass transfer within binary star systems, are discussed as possible origins for the enrichment of the CN‐strong stars. In the case of M4, these processes must have occurred at sufficiently early times that dynamical relaxation of the cluster has largely erased any initial gradient in the relative space densities of CN‐strong and CN‐weak stars, at least within the volume of the current stellar sample that extends to three half‐mass radii from the cluster center.
Spectral flux from low-density photospheres - Numerical results

Radiative transfer through sharp, quasi-static atmospheres whose opacity is dominated by hydrogen is considered at densities low enough that scattering usually dominates absorption and radiative excitations usually dominate collisional excitations. Numerical results for the continuum spectral flux are obtained for effective temperatures T(e) = 6000-16,000 K and scale heights Delta-R = 10 to the 10th - 10 to the 14th cm. Spectra are significantly different than if LTE level populations were assumed. Comparison with observations of the Type II supernova 1980k tends to increase the value of the Hubble constant previously obtained by the Baade (1926) method.
Remaining Useful Life Prediction Using Dual-Channel LSTM with Time Feature and Its Difference

At present, the research on the prediction of the remaining useful life (RUL) of machinery mainly focuses on multi-sensor feature extraction and then uses the features to predict RUL. In complex operations and multiple abnormal environments, the impact of noise may result in increased model complexity and decreased accuracy of RUL predictions. At the same time, how to use the sensor characteristics of time is also a problem. To overcome these issues, this paper proposes a dual-channel long short-term memory (LSTM) neural network model. Compared with the existing methods, the advantage of this method is to adaptively select the time feature and then perform first-order processing on the time feature value and use LSTM to extract the time feature and first-order time feature information. As the RUL curve predicted by the neural network is zigzag, we creatively designed a momentum-smoothing module to smooth the predicted RUL curve and improve the prediction accuracy. Experimental verification on the commercial modular aerospace propulsion system simulation (C-MAPSS) dataset proves the effectiveness and stability of the proposed method.
Avalanche Breakdown in Silicon

An avalanche theory of breakdown at room temperature is proposed for semiconductors based on the assumption of approximately equal ionization rates for electrons and positive holes. The problem of obtaining ionization rates from data obtained in inhomogeneous fields is solved exactly for two specific field distributions. Ionization rates for silicon thus calculated from experimental data on breakdown voltage and on prebreakdown multiplication for both linear-gradient and step junctions are in good agreement. The temperature coefBcient of the ionization rate exhibits a similar internal consistency. It is concluded that internal field emission has not been observed I silicon. Detailed observations are reported of the pulse-type noise associated with breakdown. It is shown that this noise represents the unstable onset of breakdown and that, for the junctions studied, all of the current Row in the breakdown region can be attributed to the current carried by the noise pulses.
SIESTA: A Scalable Infrastructure of Sequential Pattern Analysis

Sequential pattern analysis has become a mature topic with a lot of techniques for a variety of sequential pattern mining-related problems. Moreover, tailored solutions for specific domains, such as business process mining, have been developed. However, there is a gap in the literature for advanced techniques for efficient detection of arbitrary sequences in large collections of activity logs. In this work, we introduce the SIESTA (Scalable infrastructure of sequential pattern analysis) solution making a threefold contribution: (i) we employ a novel architecture that relies on inverted indices during preprocessing and we introduce an advanced query processor that can detect and explore arbitrary patterns efficiently; (ii) we discuss and evaluate different configurations to optimize both the preprocessing and the querying phase; and (iii) we present evaluation results competing against representatives of the state-of-the-art with a focus on Big Data. The experimental results are particularly encouraging, e.g., when all methods are deployed in a cluster and the volume of the data is increased,SIESTA creates the indices in almost half the time compared to the state-of-the-art Elasticsearch-based solution, while also yielding faster query responses than all its competitors by up to 1 order of magnitude.
A localized Fourier collocation method for 2D and 3D elliptic partial differential equations: Theory and MATLAB code

A localized Fourier collocation method is proposed for solving certain types of elliptic boundary value problems. The method first discretizes the entire domain into a set of overlapping small subdomains, and then in each of the subdomains, the unknown functions and their derivatives are approximated using the pseudo‐spectral Fourier collocation method. The key idea of the present method is to combine the merits of the quick convergence of the pseudo‐spectral method and the high sparsity of the localized discretization technique to yield a new framework that may be suitable for large‐scale simulations. The present method can be viewed as a competitive alternative for solving numerically large‐scale boundary value problems with complex‐shape geometries. Preliminary numerical experiments involving Poisson, Helmholtz, and modified‐Helmholtz equations in both two and three dimensions are presented to demonstrate the accuracy and efficiency of the proposed method.
Continuous Curvature Path Planning using Voronoi diagrams and Fermat's spirals

Abstract This paper presents a two-dimensional curvature-continuous path planning algorithm based on Voronoi diagrams and Fermat's spiral segments. The map and the obstacles position are assumed to be known a-priori and static. Despite the disposition of the obstacles, the Voronoi diagram always presents at least one collision-free path, maximally distant from all the obstacles. If more than one flyable path is available, the shortest one is selected. The result is further refined to obtain a more practical path that is piecewise linear with discontinuous curvature and velocity. Fermat's spirals are used to smooth the path and provide curvature-continuity. A maximum threshold for the curvature is set so that the result of the algorithm respects kinematics and dynamics constraints of the vehicle. Moreover a minimum clearance from the obstacles can be chosen to respect additional safety constraints. The final result of the algorithm is a simple and intuitive path composed only by straight lines and spiral segments.
Stability of viscoelastic continuum with negative‐stiffness inclusions in the low‐frequency range

The stability of viscoelastic composites with negative stiffness (NS) inclusions and their associated extreme mechanical properties are studied with time‐domain finite element analysis and composite theory. In the finite element analysis, the stability of the plane‐strain, two‐phase NS composite is evaluated by monitoring the stress divergence under uniaxial straining. In addition, 2D and 3D two‐phase NS composites are studied by using composite theories and the elastic–viscoelastic correspondence principle. Effective stiffness and damping anomalies are observed, and the stability of the composites is evaluated. In the low frequency regime, stability conditions for purely elastic systems are suitable to estimate the stability of the viscoelastic composites. This is verified with the finite element analysis. For the 2D problem, the finite element analysis and composite theory agree well with each other in terms of the overall properties and stability. For the 3D problem, only the results obtained from the composite theory are presented. Our analysis shows that the extreme mechanical properties for both of the 2D and 3D cases are located near the strong ellipticity boundary. When the matrix modulus is suitably chosen to satisfy all stability conditions, the effective stiffness softening anomaly (i.e., damping enhancement) may be in the stability range. The effective stiffness enhancement locates in the non‐elliptic range of the negative inclusion bulk modulus parameter space.
Protein-Based Oncopanel as Addition to Target Sequencing in Head and Neck Squamous Cell Carcinoma to Individualize Treatment Decisions

Head and neck squamous cell carcinoma (HNSCC) is a heterogeneous group of cancers and patients have limited therapy options if primary treatment fails. Therefore, additional information about the biology of the tumor is essential. Here we performed a feasibility study of concurrently applying two precision diagnostic tools in a consecutive series of HNSCC patients. We analyzed tumor samples of 31 patients using a genomic (oncomine) and a proteomic, immunohistochemical approach (oncopanel) and compared the result, also in the focus on their overlapping therapeutical targets. We found no strong correlation between the two approaches and observed a higher proportion of marker expression for the immunohistochemical panel. However, both panels show in our HNSCC cohort distinct patterns with druggable targets. The data suggest that both approaches complement one another and can be applied side-by-side to identify the best targets for the development of individual treatment options for HNSCC patients.
Evaluation of Potential Antimicrobial Activity of Stem Barks Extract of Persea americana (Mill) and its Solvent Fractions against Randomly Selected Pathogenic Bacteria and Fungi

Persea americana stem barks are used locally in parts of Nigeria in treating bacterial infections. This study aims to determine the antimicrobial potential of the methanol extract and fractions against S. aureus, B. substilis, E. coli, P. aeruginosa, C. albicans and Aspergilus species. The plant material was extracted with 80% methanol and partitioned into chloroform and aqueous phases which were evaluated for antimicrobial activities using agar well diffusion method. The methanol extract inhibited the growth of the test organisms; P. aeruginosa showed the most activity at 100mg/mL. The CHCl3 fraction of the plant extract was ineffective against gram negative bacteria (E. coli and P. aeruginosa) at low concentrations. The CHCl3 fraction was most effective against S. aureus at 50mg/mL but ineffective against gram-negative organisms at lower concentrations. The extract's H2O fraction had the most antimicrobial activity. The H2O fraction inhibited B. substilis at 50mg/mL (8.50±1.08mm). Alkaloids, saponins, tannins, steroids, among others were observed in the extract and fractions. Owing to the higher antimicrobial activity in the H2O fraction, the active antimicrobial compounds could be polar in nature. The higher inhibitory activity recorded by the H2O fraction supports the folkloric use of P. Americana.
VIRTIS-H: a high-spectral-resolution channel for the Rosetta infrared imaging spectrometer

VIRTIS, the infrared imaging spectrometer of the ESA/ROSETTA mission, to be launched in January 2003, is devoted to the in-orbit remote sensing study of comet P/46 Wirtanen. Within the infrared imaging spectrometer VIRTIS, the high spectral resolution channel, VIRTIS-H, has for main scientific objectives to study the fine spectral details of the coma and cometary nucleus, with their composition and physical parameters, in parallel with the imaging spectrometer channel VIRTIS-M. The instrument is a cross-dispersor spectrometer, working in the range 2 - 5 micrometers , at about approximately 1200 spectral resolving power. Its design consists of a telescope, an entrance slit, followed by a collimator, and a prism separating 8 orders of a grating