Miracle-dz/UniFAR-FTUs huggingface dataset:
A Peculiar Emission-Line Feature in the X-Ray Spectrum of the Quasar PKS 0637–752

We report the results from an ASCA observation of the high-luminosity, radio-loud quasar PKS 0637-752 (redshift 0.654), covering the 0.8-15 keV band in the quasar frame. We find the source to have a luminosity of ~1046 ergs s-1 in the 2-10 keV band, which is a factor of ~3 lower than during a previous Ginga observation. The continuum appears to be well modeled by a simple power law with Γ=1.64±0.07, with no evidence for absorption by material intrinsic to the quasar or Fe-K emission (with an equivalent width ≲80 eV at 90% confidence). However, we do find evidence for a narrow emission line at an energy 1.60±0.07 keV and equivalent width 59+ 38−34 eV (both in the quasar frame). Line emission at these energies has not been observed in any other active galaxy or quasar to date. We reject the possibility that this line is the result of instrumental artifacts and briefly explore possible identifications.
Personal Problems Questionnaire (PPQ): Normative Data and Utility in Assessing Acquired Neurological Impairment.

OBJECTIVE The Personal Problems Questionnaire (PPQ) is a measure designed to assess acquired cognitive, emotional, and physical complaints. The present study sought to develop a normative database to allow clinicians and researchers to assess self-reported complaints among people with disabilities, and evaluate the response consistency and validity of their self-report. METHOD 404 community-dwelling participants (n 200 males, 204 females) completed the PPQ, as well as an acquired brain injury (ABI) group (n 59), mainly following stroke and traumatic brain injuries, and seen for clinical (i.e., non-forensic) evaluations. Multiple regression analyses were conducted to derive norms from the healthy community sample taking into account age, gender, and educational level. RESULTS Normative T scores and cut-off points for the Clinical and Validity scales were derived, respectively, and used to assess the responses of the ABI group. The results indicated that the ABI group showed good response consistency and elevated scores on the Clinical scales, indicating that the PPQ is likely to be useful in detecting acquired disabilities. On the other hand, scores on the Validity scales were not elevated, indicating that the measures were unaffected by the ABI participants' cognitive difficulties. CONCLUSIONS The PPQ provides a comprehensive assessment of complaints and response validity and the present study provides further data to assist with its use and interpretation.
Local adaptive image restoration and enhancement with the use of DFT and DCT in a running window

On the base of local criteria of processing quality, a class of local adaptive linear filters for image restoration and enhancement is introduced. The filters work in a running window in the domain of DFT of DCT and have O (size of the window) computational complexity thanks to recursive algorithms of running DFT and DCT. The filter design and the recursive computation of running DCT are outlined and filtering for edge preserved noise suppression, blind image restoration and enhancement is demonstrated.
Spin filtering through ferromagnetic BiMnO3 tunnel barriers

We report on experiments of spin filtering through ultra-thin single-crystal layers of the insulating and ferromagnetic oxide BiMnO3 (BMO). The spin polarization of the electrons tunneling from a gold electrode through BMO is analyzed with a counter-electrode of the half-metallic oxide La2/3Sr1/3MnO3 (LSMO). At 3 K we find a 50% change of the tunnel resistances according to whether the magnetizations of BMO and LSMO are parallel or opposite. This effect corresponds to a spin filtering effciency of up to 22%. Our results thus show the potential of complex ferromagnetic insulating oxides for spin filtering and injection.
Monte Carlo simulation of three-dimensional measurements of translucent objects

Abstract. In a previous article, we described the deviation between the real and the measured object surface that occurs when a translucent object is scanned by an active triangulation system. This error depends on the angle between the measurement direction and the object’s surface normal, the surface reflection behavior, which can be described by a bidirectional reflectance distribution function, and the light penetration behavior. In general, the error is small if the surface is perpendicular to the measurement direction; it increases if the surface is tilted and decreases again for flat angles. This error curve is additionally affected by the surface roughness. The angle dependence is more distinct for smooth surfaces. In order to predict and compensate for the error, it is necessary to understand the error-forming process. Therefore, Monte Carlo simulations of several measurements were performed. As the computational cost is very high for three-dimensional simulations, most of the simulations were performed in two-dimensional space. We present the results of these simulations and discuss how the measurement error depends on the surface roughness, the measurement direction, and the scattering behavior of the material.
Proximité et dualité dans un espace hilbertien

© Bulletin de la S. M. F. , 1965, tous droits réservés. L’accès aux archives de la revue « Bulletin de la S. M. F. » ( http://smf. emath.fr/Publications/Bulletin/Presentation.html), implique l’accord avec les conditions générales d’utilisation ( http://www.numdam.org/legal.php). Toute utilisation commerciale ou impression systématique est constitutive d’une infraction pénale. Toute copie ou impression de ce fichier doit contenir la présente mention de copyright.
Physical mechanisms of megahertz vibrations and nonlinear detection in ultrasonic force and related microscopies

Use of high frequency (HF) vibrations at MHz frequencies in Atomic Force Microscopy (AFM) advanced nanoscale property mapping to video rates, allowed use of cantilever dynamics for mapping nanomechanical properties of stiff materials, sensing μs time scale phenomena in nanostructures, and enabled detection of subsurface features with nanoscale resolution. All of these methods critically depend on the generally poor characterized HF behaviour of AFM cantilevers in contact with a studied sample, spatial and frequency response of piezotransducers, and transfer of ultrasonic vibrations between the probe and a specimen. Focusing particularly on Ultrasonic Force Microscopy (UFM), this work is also applicable to waveguide UFM, heterodyne force microscopy, and near-field holographic microscopy, all methods that exploit nonlinear tip-surface force interactions at high frequencies. Leveraging automated multidimensional measurements, spectroscopic UFM (sUFM) is introduced to investigate a range of common experimenta.
Effects of Teamwork Competency and Leadership Competence through Organizational Commitment on the Performance of the State Owned Enterprises in Makassar City, South Sulawesi

- This study aims to examine and analyze the effects of (i) the competency of teamwork on company performance; (ii) leadership competence on company performance; (iii) the competency of teamwork through organizational commitment on company performance; (iv) leadership competence through organizational commitment on company performance; and (v) organizational commitment on company performance. This research is an explanatory research that explain causality relationship between teamwork competency, leadership competence, organizational commitment and company performance. The study was conducted at the State Owned Enterprises particularly PT.Perusahaan Listrik Negara (Persero), PT. Pertamina (Persero), PT. Telekomunikasi Indonesia, Tbk. (Persero), and PT. Pelindo IV (Persero) located in Makassar city, South Sulawesi. The number of sample of this study was 250 employees of the above State Own Enterprises. The sample was collected using convenience sampling method. The instrument to collect the data is by using questionnaires. These data were analyzed using Structural Equation Modeling (SEM). The study found that teamwork competency has a significant positive effect on company performance either directly or through organizational commitment. Leadership competence was also significant in affecting the organizational commitment, but it has no significant effect on company performance. Therefore, teamwork competency is important to be given attention in improving the performance of the state owned enterprises in Makassar city, while leadership competence is useful to improve the organizational commitment of the State Owned enterprises in Makassar city. Thus, much remain to be done by the SOEs uinder surveyed in Makassar city in improving their companies’ performance.
Emission of carbon nanotube-DNA-GOX bionanohybrid for glucose detection

Emission of individual single-walled carbon nanotubes (SWNTs) in aqueous suspension with single-stranded DNA (ss-DNA) wrapped around the tube with and without glucose oxidase (GOX) has been studied in the spectral range (9-13)•103 cm-1. GOX was added into the aqueous suspension of SWNTs with wrapped ss-DNA, which was prepared before using ultrasonication/ultracentrifugation treatment. AFM images of the nanotube with the adsorbed enzyme show that GOX retains its native globular structure. Computer simulation of SWNT:DNA:GOX bionanohybrid formation in water demonstrates effective coupling of the enzyme with DNA wrapped around the nanotube. GOX adding was not accompanied by a change of Raman spectrum of nanotubes. However, in the spectrum of nanotubes emission a small spectral blue shift was observed after GOX immobilization. Small glucose injections (1 mM in portion) into the prepared aqueous suspension lead to the quenching of the intensity of nanotube luminescence due to the appearance of H2O2 in the solution as a result of glucose oxidizing. The DNA interlayer between the GOX and nanotube keeps the enzyme activity which usually decreases when the enzyme is bound directly to the nanotube.
Notions clés des méthodes numériques dans le projet de NEPTUNE

We will try to present herein the main issues of our investigation in numerical methods for two-phase flow modeling, within the framework of the NEPTUNE project, which benefits from both contributions of CEA and EDF. These may be recast in five work packages. The first two are devoted to the mathematical and numerical modeling of two-phase flows with interfaces and the two-fluid two pressureapproach. This in particular includes investigation of relaxation methods in order to establish correct links with standard two-fluid models, which are the core of the third work package. Computations of the interaction of shock waves with bubbles will be presented. Some new results concerning two-fluid and three-field flow modeling will also be briefly presented. Part of the work in the third work package concerns benchmarking, and comparison with several hyperbolic solvers, but also improvement of numerical treatment of source terms, multi-field models and suitable boundary conditions. The fourth one, which deals with the interfacial coupling of codes, is probably the most important one since it requires connecting all models together. Since little attention has been paid to this crucial point, part of the focus will be given in this paper on the coupling of equations of state, one-dimensional and three-dimensional codes, porous approach and free medium approach, but also on ongoing work concerning relaxed and unrelaxed hyperbolic two-phase flow models. The fifth work package gathers all classical contributions in numerical methods, including: recent applications of fictitious domain methods ; preconditioning of so-called “low Mach number” two-phase flows (with applications to the motion of rising bubbles in water) ; parallel and multigrid techniques (with applications to steam generators in nuclear power plants) ; Finite Volume Element methods (with applications to the standard two-fluid models) ; construction and validation of new exact or approximate Riemann solvers (in order to cope with vanishing phases). The latter five obviously aim at improving accuracy, stability and also at reducing CPU time. A few examples will enable to highlight the main advantages and possible drawbacks of these new developments, and the impact of the current and future increasing computational facilities. Main past achievements, and key points of current and future work on all these issues will be discussed. All available references will be given in order to help the reader getting a more accurate insight on these various contributions. The whole has clearly benefited from contributions of several PhD students : Thomas Fortin, Vincent Guillemaud, Olivier Hurisse, Angelo Muronne, Isabelle Ramière, Jean-Michel Rovarch and Nicolas Seguin.
Cornulin as a Potential Novel Biomarker for Cutaneous Squamous Cell Carcinoma

Background This study aimed to evaluate the expression of an epidermal differentiation marker, cornulin, in cutaneous squamous cell carcinoma (cSCC). Cornulin has been found to be downregulated in various squamous cell carcinomas of other tissues; however, its expression in cSCC has never been studied. We predicted that cornulin expression in cSCC is reduced compared to the normal epidermis. Moreover, we hypothesized that an inverse relationship exists between cornulin expression and the loss of differentiation, as defined by histopathological grading of cSCC lesions. Methodology Samples of normal skin and cSCC lesions of variable histopathological grades were stained using immunohistochemistry. High-resolution tissue images were analyzed with Aperio ImageScope (Leica Biosystems) utilizing a positive-pixel-counting algorithm to quantify the staining intensity. Histo-score (H-score) was calculated based on staining intensity and percentage of positive cell staining. Mean H-scores were compared using an unpaired t-test. Results We documented cornulin expression in cSCC for the first time. Cornulin levels were downregulated by more than two-fold in cSCC compared to the normal epidermis. Additionally, we observed a 4.5-fold downregulation in cornulin expression in tumors with high histopathological grades when compared to low histopathological grade tumors. Conclusions Cornulin expression levels measured through immunohistochemistry staining can help distinguish among the different histopathological grades of cSCC. Therefore, we propose that cornulin detection can be an adjunct to pathological examination to evaluate the differentiation status of cSCC specimens. Longitudinal studies are needed to establish the utility of cornulin as a diagnostic and prognostic biomarker for cSCC.
Double Impact: When Both Tornadoes and Flash Floods Threaten the Same Place at the Same Time

AbstractWhile both tornadoes and flash floods individually present public hazards, when the two threats are both concurrent and collocated (referred to here as TORFF events), unique concerns arise. This study aims to evaluate the climatological and meteorological characteristics associated with TORFF events over the continental United States. Two separate datasets, one based on overlapping tornado and flash flood warnings and the other based on observations, were used to arrive at estimations of the instances when a TORFF event was deemed imminent and verified to have occurred, respectively. These datasets were then used to discern the geographical and meteorological characteristics of recent TORFF events. During 2008–14, TORFF events were found to be publicly communicated via overlapping warnings an average of 400 times per year, with a maximum frequency occurring in the lower Mississippi River valley. Additionally, 68 verified TORFF events between 2008 and 2013 were identified and subsequently classifie.
Linewidth of a polariton laser: Theoretical analysis of self-interaction effects

Polaritons in semiconductor microcavities can experience a Bose-Einstein condensation experimentally detectable in the spectrum of the emitted light. Scattering with noncondensed particles as well as self-interaction in the condensate provoke phase diffusion limiting the coherence of the polariton condensate. We present a theoretical analysis of self-interaction effects on the lineshape of the emission from a polariton laser. Our calculations, for CdTe microcavities, show that there is an optimum pump at which the linewidth of the emitted light is reduced down to 1 μeV.
Psychological Burden, Hope, And Resilience among Mothers of Autistic Spectrum Children; Comparative Study

BACKGROUND AND OBJECTIVES: Autism spectrum disorder (ASD) is a lifelong neurodevelopmental disability includes deficits in social, communication skills and repetitive behaviors. The aim of the study was to compare the levels of psychological burden, hope, and resilience of mothers who have autistic child in comparison to mothers who have normal child. SUBJECTS AND METHODS: A comparative cross-sectional study was conducted using a non-random sampling of 195 mothers of autistic child selected from governmental and private autism centers and a comparative group of mothers of normal children from Duhok province Iraq in a period of three months from 15th November 2021 to 15th February 2022. A battery of instruments was used to assess psychological burden, hope and resilience. RESULTS: The study revealed that the stress, anxiety, and depression level mean scores were higher in mothers who have autistic child, Stress; (M=23.31, SD=5.442), Anxiety; (M=11.78, SD=4.045), and Depression; (M=13.24, SD=4.744) compared to scores in non-autistic mothers (M=7.48, SD=4.576), (M=4.16, SD=2.643), and (M=4.91, SD=2.852) respectively. Furthermore, the hope and resilience mean scores were lower in mothers who have autistic child hope; (M=35.18, SD=7.716) and resilience; (M=2.82, SD=0.608) respectively, compared to scores in non-autistic mothers (M=47.69, SD=5.371) and (M=3.86, SD=0.481) respectively. The study found that staying in the center and being a divorced mother were the mostly demographic factor having highly significant relationship with psychological burden, hope, and resilience. CONCLUSIONS: The mothers of autistic children were significantly experiencing higher level of psychological burden and a lower level of hope and resilience as compared to mothers who have normal children. These findings are important for mental health planning for mothers of autistic children
Impact of Social Deprivation on Hospitalization and Intensive Care Unit Admission among COVID-19 Patients: A Systematic Review and Meta-Analysis

Background: The coronavirus disease 2019 (COVID-19) pandemic has disproportionately affected socially disadvantaged groups; however, the association between socioeconomic status and healthcare utilization among COVID-19 patients remains unclear. Therefore, a systematic review and meta-analysis was conducted to assess the association between socioeconomic status and hospitalization and intensive care unit admission among COVID-19 patients. Methods: PubMed, Embase, and the Cochrane Register of Controlled Trials were searched for relevant literature (updated to Jun 2022). Studies that investigated the association of social deprivation with hospitalization and intensive care unit admission in COVID-19 patients were included. The primary outcomes included risk of hospitalization and intensive care unit admission, measured by odds ratio. Results: Eleven studies covering 2,423,095 patients were included in the meta-analysis. Socially disadvantaged patients had higher odds of hospitalization in comparison to socially advantaged patients (odds ratio 1.25, 95% confidence interval: 1.14 to 1.38; P<0.01). The odds of intensive care unit admission among more deprived patients was not significantly different from that of less deprived patients (odds ratio 1.03, 95% confidence interval: 0.78 to 1.35; P=0.85). These findings were proven robust through subgroup and sensitivity analyses. Conclusion: Socially disadvantaged populations have higher odds of hospitalization if they become infected with COVID-19. More effective medical support and interventions for these vulnerable populations are required to reduce inequity in healthcare utilization and alleviate the burden on healthcare systems.
Environmental Stability Evaluation of Aluminium Doped Zinc Oxide (AZO) Transparent Electrodes Deposited at Low Temperature for Solar cells

The degradation of transparent electrodes’ electrical conductivity under environmental conditions is considered as a major failure mode for solar cells’ long-term efficiency. In this paper, AZO thin films were subjected to the International Electrotechnical Commission (IEC) 61646 test to examine their environmental stability and suitability as front electrodes for solar cells. To explore the interplay between AZO deposition parameters and environmental stability, AZO films were deposited by radio frequency magnetron sputtering at different parameters and without external heating. The conductivity stability evolution upon the testwas investigated via studying the AZO electrical, structural, and morphological characteristics at different deposition conditions. A direct dependence was identified between the samples’ conductivity degradation rates and the samples’ structural and morphological characteristics including grain size, grain boundary density, surface roughness, and compactness. The samples’ resistivity increases linearly over the test period due to both electron density and mobility degradations. Improved stability was observed for thicker AZO samples (360 nm) originating from enhanced grain size, surface profile, and compactness. These samplesmaintained solar cells' applicable sheet resistance of 21.24 Ω/sq (ρ=7.64×10-4 Ω.cm) following the test. The conducted aging studies demonstrated that manipulating the AZO films growth process via optimizing the deposition parameters is an effective pathway for low-temperature deposited electrodes with enhanced environmental stability
Gold and silver as safe havens: A fractional integration and cointegration analysis

This paper investigates whether gold and silver can be considered safe havens by examining their long-run linkages with 13 stock price indices. More specifically, the stochastic properties of the differential between gold/silver prices and 13 stock indices are analysed applying fractional integration/cointegration methods to daily data, first for a sample from January 2010 until December 2019, then for one from January 2020 until June 2022 which includes the Covid-19 pandemic. The results can be summarised as follows. In the case of the pre-Covid-19 sample ending in December 2019, mean reversion is found for the gold price differential only vis-à-vis a single stock index (SP500). whilst in seven other cases, although the estimated value of d is below 1, the value 1 is inside the confidence interval and thus the unit root null hypothesis cannot be rejected. In the remaining cases the estimated values of d are significantly higher than 1. As for the silver differential, the upper bound is 1 only in two cases, whilst in the others mean reversion does not occur. Thus, the evidence is mixed on whether these precious metals can be seen as safe havens, though it appears that this property characterises gold in a slightly higher number of cases. By contrast, when using the sample starting in January 2020, the evidence in favour of gold and silver as possible safe havens is pretty conclusive since mean reversion is only found in a single case, namely that of the gold differential vis-à-vis the New Zealand stock index.