Miracle-dz/UniFAR-FTUs huggingface dataset:
XMM-NEWTON OBSERVATIONS OF THREE INTERACTING LUMINOUS INFRARED GALAXIES

We investigate the X-ray properties of three interacting luminous infrared galaxy systems. In one of these systems, IRAS 18329+5950, we resolve two separate sources. A second and third source, IRAS 19354+4559 and IRAS 20550+1656, have only a single X-ray source detected. We compare the observed emission to point-spread function (PSF) profiles and determine that they are all consistent with the PSF, albeit with large uncertainties for some of our sources. We then model the spectra to determine soft (0.5–2 keV) and hard (2–10 keV) luminosities for the resolved sources and compare these to relationships found in the literature between infrared and X-ray luminosities for starburst galaxies. We obtain luminosities (0.5–10 keV) ranging from 1.7 to 7.3 × 1041 erg s−1 for our systems. These X-ray luminosities are consistent with predictions for star-formation-dominated sources and thus are most likely due to starbursts, but we cannot conclusively rule out active galactic nuclei.
An interdisciplinary approach to characterize peanut‐allergic patients—First data from the FOOD@ consortium

Background Peanut allergy is a frequent cause of food allergy and potentially life‐threatening. Within this interdisciplinary research approach, we aim to unravel the complex mechanisms of peanut allergy. As a first step were applied in an exploratory manner the analysis of peanut allergic versus non‐allergic controls. Methods Biosamples were studied regarding DNA methylation signatures, gut microbiome, adaptive and innate immune cell populations, soluble signaling molecules and allergen‐reactive antibody specificities. We applied a scalable systems medicine computational workflow to the assembled data. Results We identified combined cellular and soluble biomarker signatures that stratify donors into peanut‐allergic and non‐allergic with high specificity. DNA methylation profiling revealed various genes of interest and stool microbiota differences in bacteria abundances. Conclusion By extending our findings to a larger set of patients (e.g., children vs. adults), we will establish predictors for food allergy and tolerance and translate these as for example, indicators for interventional studies.
Moving Through the Pipeline: Ethnic and Linguistic Disparities in Special Education from Birth Through Age Five

This study examined Oregon’s early intervention (EI) and early childhood special education (ECSE) pipelines as a function of children’s intersecting ethnicity and home language(s) with a focus on children from Latino/a backgrounds with communication disorders. We found differences in children’s referral source and age of referral, likelihood of evaluation and placement, and type of placement for conditions related to communication, including autism spectrum disorder and hearing impairment. Results showed differences in EI and ECSE; however, disproportionality appeared greatest among Spanish-speaking Latino/a children and non-Latino/a children who spoke languages other than English compared to non-Latino/a English-speaking counterparts. Our findings suggest that attending to children’s intersecting ethnicity and language backgrounds in referral, evaluation, and placement add nuance to examinations of disproportionality. Results also indicate that practices related to characterizing children’s communication disorders likely make substantial contributions to inequities in EI and ECSE. Precise identification of differences in service provision can lead to targeted policy and practice solutions to reduce structural barriers to care in EI/ECSE systems and improve equity, particularly as related to placement for children of color with communication concerns.
Trapped ghosts: a new class of wormholes

We construct examples of static, spherically symmetric wormhole solutions in general relativity with a minimally coupled scalar field ϕ whose kinetic energy is negative in a restricted region of space near the throat (of arbitrary size) and positive far away from it. Thus in such configurations a ‘ghost’ is trapped in the strong-field region, which may in principle explain why no ghosts are observed under usual conditions. Some properties of general wormhole models with the ϕ field are revealed: it is shown that (i) trapped-ghost wormholes are only possible with nonzero potentials V(ϕ); (ii) in wormholes with two asymptotically flat regions, a nontrivial potential V(ϕ) has an alternate sign and (iii) a wormhole with two asymptotically flat regions which is mirror symmetric with respect to its throat has necessarily a zero Schwarzschild mass at both asymptotics.
Exploring the nature of the unidentified very-high-energy gamma-ray source HESS J1507-622

Context. Several extended sources of very-high-energy (VHE; E > 100 GeV) gamma rays have been found that lack counterparts belonging to an established class of VHE gamma-ray emitters. Aims. The nature of the first unidentified VHE gamma-ray source with significant angular offset from the Galactic plane of 3.5 ◦ , HESS J1507–622, is explored. Methods. Fermi-LAT data in the high-energy (HE, 100 MeV < E < 100 GeV) gamma-ray range collected over 34 month are used to describe the spectral energy distribution (SED) of the source. Additionally, implications of the off-plane location of the source for a leptonic and hadronic gamma-ray emission model are investigated. Results. HESS J1507–622 is detected in the Fermi energy range and its spectrum is best described by a power law in energy with Γ= 1.7 ± 0.1stat ± 0.2sys and integral flux between (0.3−300) GeV of F = (2.0 ± 0.5stat ± 1.0sys) × 10 −9 cm −2 s −1 . T he SED constructed from the Fermi and H.E. S.S. data for this source does not support a smooth power-law continuation from the VHE to the HE gamma-ray range. With the available data it is not possible to discriminate between a hadronic and a leptonic scenario for HESS J1507–622. The location and compactness of the source indicate a considerable physical offset from the Galactic plane for this object. In case of a multiple-kpc distance, this challenges a pulsar wind nebula (PWN) origin for HESS J1507–622 since the time of travel for a pulsar born in the Galactic disk to reach such a location would exceed the inverse Compton (IC) cooling time of electrons that are energetic enough to produce VHE gamma-rays. However, an origin of this gamma-ray source connected to a pulsar that was born off the Galactic plane in the explosion of a hypervelocity star cannot be excluded. Conclusions. The nature of HESS J1507–622 is still unknown to date, and a PWN scenario cannot be ruled out in general. On the contrary HESS J1507–622 could be the first discovered representative of a population of spatially extended VHE gamma-ray emitters with HE gamma-ray counterpart that are located at considerable offsets from the Galactic plane. Future surveys in the VHE gamma-ray range are necessary to probe the presence or absence of such a source population.
Analysis of The Effect of Service Quality and Product Quality on Consumer Loyalty

The purpose of this study is to obtain valid and reliable empirical data, facts, and information regarding the analysis of product quality factors and customer loyalty service quality of fast food restaurant consumers. This research is a quantitative research. There are two independent variables, namely product quality (X1), Service Quality (X2) and one dependent variable, namely Consumer Loyalty (Y). Data was collected by means of a survey. The data analysis technique used multiple linear regression analysis. The population in this study were all consumers who had bought fast food using an online application, where there were 142 respondents who gave answers to questionnaires via google forms which were distributed online. The results showed that there was an effect of service quality on customer loyalty, amounting to 51.9. %, there was an effect of product quality on customer loyalty of 59.8% and there was an effect of service quality and product quality together in influencing consumer loyalty by 61, 5%.
The Mediating Impact of Self-Confidence on Relationship of Perceived Formal Support and Entrepreneurial Intention in the Education Sector of Pakistan

The purpose of this study is to find out the mediating influence of selfconfidence level (SC) on the relationship of perceived formal support (PFS) and students‟ entrepreneurial intention (EI). There are few studies that investigated the influence of mediator (self confidence level). As a result, this study contributes to the area of entrepreneurship. The study used a crosssectional research design. The population of this study consists of final year undergraduates of University of the Punjab, Lahore. Sample consists of 250 students from three departments. Zero-order correlation, multiple regression analysis and t-test are used for data analysis. The multiple regression analysis shows that self-confidence level (SC) significantly mediates the relationship of perceived formal support (PFS) and entrepreneurial intentions (EI) of students. Furthermore, t-test shows that male and female students significantly different in terms of perceived formal support (PFS) but there is no difference between male and female students in terms of their entrepreneurial intentions (EI).
Risk of Mortality from Respiratory Malignant and Non-Malignant Diseases among Talc Miners and Millers: A Systematic Review and Meta-Analysis

There is contrasting data on the association between talc exposure and lung and pleural cancer. Given the potential importance of this aspect, we performed a systematic review and meta-analysis to investigate the association between working in the talc extractive industry and mortality from malignant and non-malignant respiratory diseases. We followed PRISMA guidelines to systematically search for pertinent articles in three relevant electronic databases: Pubmed, Scopus, and WebOfScience, from their inception to 30 November 2021. The methodological quality of included articles was evaluated using the US National Institutes of Health tool. Standardized incidence ratios (SIRs) and standardized mortality ratios (SMRs) for malignant and non-malignant respiratory diseases as well as respective 95% confidence intervals (CIs) were extracted or calculated for each included cohort. Six articles comprising 7 cohorts were included in the metanalysis. There was increased mortality for pneumoconiosis, especially in the miner’s group (SMR = 7.90, CI 95% 2.77–22.58) and especially in those exposed to higher quartz concentration and for non-malignant respiratory diseases in the overall analysis (SMR = 1.81, CI 95% 1.15–2.82). The risk for lung cancer mortality was slightly increased in the overall analysis (SMR = 1.42, CI 95% 1.07–1.89). The risk for malignant mesothelioma could not be calculated due to an insufficient number of studies assessing this outcome. This systematic review and meta-analysis provides evidence that men working in the talc mining industry have increased mortality for non-malignant respiratory diseases including pneumoconiosis. The small excess in lung cancer mortality may be, in part, explained by the high prevalence of the smokers in some of the analyzed cohorts or by the exposure to other carcinogens like radon decay products and diesel engine exhaust.
Variability of the X-ray Broad Iron Spectral Features in Active Galactic Nuclei and Black-hole Binaries

The “broad iron spectral features” are often seen in X-ray spectra of active galactic nuclei (AGN) and black-hole binaries (BHB). These features may be explained either by the “relativistic disc reflection” scenario or the “partial covering” scenario: It is hardly possible to determine which model is valid from time-averaged spectral analysis. Thus, X-ray spectral variability has been investigated to constrain spectral models. To that end, it is crucial to study iron structure of BHBs in detail at short time-scales, which is, for the first time, made possible with the Parallel-sum clocking (P-sum) mode of XIS detectors on board of Suzaku. This observational mode has a time-resolution of 7.8 ms as well as a CCD energyresolution. We have carried out systematic calibration of the P-sum mode, and investigated spectral variability of the BHB GRS 1915+105. Consequently, we found that the spectral variability of GRS 1915+105 does not show iron features at sub-seconds. This is totally different from variability of AGN such as 1H0707–495, where the variation amplitude significantly drops at the iron K-energy band. This difference can be naturally explained in the framework of the “partial covering” scenario. (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Investigation of variability of iron emission lines in Centaurus X-3

We present the results obtained from a study of the variability of iron emission lines in the high mass X-ray binary pulsar Cen X-3 during the eclipse, eclipse-egress and out-of-eclipse phases using XMM-Newton observations. Three iron emission lines at 6.4 keV, 6.7 keV, and 6.97 keV are clearly detected in the spectrum of the pulsar during the entire observations, irrespective of different binary phases. The properties of these emission lines are investigated at different intensity levels. The flux level and equivalent width of the emission lines change during the eclipse, eclipse-egress and out-of-eclipse orbital phases. Based on the results obtained from the time resolved spectral analysis, it is understood that the most probable emitting region of 6.4 keV fluorescent line is very close to the neutron star whereas the other two lines are produced in a region that is far from the neutron star, probably in the highly photo-ionized wind of the companion star or in the accretion disk corona.
Classification of topological insulators and superconductors in the presence of reflection symmetry

We discuss a topological classification of insulators and superconductors in the presence of both (non-spatial) discrete symmetries in the Altland-Zirnbauer classification and spatial reflection symmetry in any spatial dimensions. By using the structure of bulk Dirac Hamiltonians of minimal matrix dimensions and explicit constructions of topological invariants, we provide the complete classification, which still has the same dimensional periodicities with the original Altland-Zirnbauer classification. The classification of reflection-symmetry-protected topological insulators and superconductors depends crucially on the way reflection symmetry operation is realized. When a boundary is introduced, which is reflected into itself, these non-trivial topological insulators and superconductors support gapless modes localized at the boundary.
Results on linear LMI-based external anti-windup design

We study linear anti-windup augmentation for linear control systems with saturated linear plants in a special case when the anti-windup compensator can only modify the input and output of the windup-prone linear controller. We also measure the arising performance in terms of the finite L/sub 2/ gain from selected exogenous inputs to selected performance outputs. Our main results are a system theoretic feasibility characterization for fixed order anti-windup design and a linear matrix inequality (LMI) formulation for optimal static and plant-order anti-windup design. Interpretations of lower bounds on the achievable performance are also given. The effectiveness of the design procedure is demonstrated on a simulation example.
Engineering decoherence for two-qubit systems interacting with a classical environment

We address the dynamics of a two-qubit system interacting with a classical dephasing environment driven by a Gaussian stochastic process. Upon introducing the concept of entanglement-preserving time, we compare the degrading effects of different environments, e.g. those described by Ornstein–Uhlenbeck (OU) or fractional noise. In particular, we consider pure Bell states and mixtures of Bell states and study the typical values of the entanglement-preserving time for both independent and common environments. We found that engineering environments towards fractional Gaussian noise is useful to preserve entanglement as well as to improve its robustness against noise. We also address entanglement sudden death by studying the sudden-death time as a function of the initial negativity. We found that: (i) the sudden-death time is bounded from below by an increasing function of the initial negativity, (ii) the sudden-death time depends only slightly on the process used to describe the environment and exhibits typicality. Overall, our results show that engineering the environment has only a slight influence over the entanglement sudden-death time, while it represents a valuable resource to increase the entanglement-preserving time, i.e. to maintain entanglement closer to the initial level for a longer interaction time.
Phenomenology of gravitational aether as a solution to the old cosmological constant problem

One of the deepest and most long-standing mysteries in physics has been the huge discrepancy between the observed vacuum density and our expectations from theories of high energy physics, which has been dubbed the old cosmological constant problem. One proposal to address this puzzle at the semiclassical level is to decouple quantum vacuum from spacetime geometry via a modification of gravity that includes an incompressible fluid, known as gravitational aether. In this paper, we discuss classical predictions of this theory along with its compatibility with cosmological and experimental tests of gravity. We argue that deviations from general relativity (GR) in this theory are sourced by pressure or vorticity. In particular, the theory predicts that the gravitational constant for radiation is 33% larger than that of nonrelativistic matter, which is preferred by (most) cosmic microwave background (CMB), Ly-$\ensuremath{\alpha}$ forest, and $^{7}\mathrm{Li}$ primordial abundance observations, while being consistent with other cosmological tests at $\ensuremath{\sim}2\ensuremath{\sigma}$ level. It is further shown that all parametrized post-newtonian parameters have the standard GR values aside from the anomalous coupling to pressure ${\ensuremath{\zeta}}_{4}$, which has not been directly measured. A more subtle prediction of this model (assuming irrotational aether) is that the (intrinsic) gravitomagnetic effect is 33% larger than GR prediction. This is consistent with current limits from LAGEOS and Gravity Probe B at $\ensuremath{\sim}2\ensuremath{\sigma}$ level.
ON THE MORPHOLOGY OF THE ELECTRON–POSITRON ANNIHILATION EMISSION AS SEEN BY SPI/INTEGRAL

The 511 keV positron annihilation emission remains a mysterious component of the high energy emission of our Galaxy. Its study was one of the key scientific objectives of the SPI spectrometer on board the International Gamma-Ray Astrophysics Laboratory satellite. In fact, a lot of observing time has been dedicated to the Galactic disk with a particular emphasis on the central region. A crucial issue in such an analysis concerns the reduction technique used to treat this huge quantity of data, and more particularly the background modeling. Our method, after validation through a variety of tests, is based on detector pattern determination per ∼6 month period, together with a normalization variable on a few hour timescale. The Galactic bulge is detected at a level of ∼70σ, allowing more detailed investigations. The main result is that the bulge morphology can be modeled with two axisymmetric Gaussians of 3. °2 and 11. °8 FWHM and respective fluxes of 2.5 and 5.4 . We found a possible shift of the bulge center toward negative longitude at l = −0. °6 ± 0. °2. In addition to the bulge, a more extended structure is detected significantly with flux ranging from 1.7 to 2.9 depending on its assumed geometry (pure disk or disk plus halo). The disk emission is also found to be symmetric within the limits of the statistical errors.
Highly efficient inverted polymer solar cell by low temperature annealing of Cs2CO3 interlayer

We demonstrate a highly efficient inverted bulk heterojunction polymer solar cell based on regioregular poly(3-hexylthiophene):[6,6]-phenyl C61 butyric acid methyl ester with a low temperature annealed interfacial buffer layer, cesium carbonate (Cs2CO3). This approach improves the power conversion efficiency of the inverted cell from 2.3% to 4.2%, with short-circuit current of 11.17mA∕cm2, open-circuit voltage of 0.59V, and fill factor of 63% under AM1.5G 100mW∕cm2 irradiation. This result is comparable to the previous regular structure device on the same system. Ultraviolet photoelectron spectroscopy shows that the work function of annealed Cs2CO3 layer decreases from 3.45to3. 06eV. Further x-ray photoelectron spectroscopy results reveal that Cs2CO3 can decompose into low work function, doped cesium oxide Cs2O upon annealing, which is accountable for the work-function reduction and device efficiency improvement.
Inside the virtuous circle between productivity, proﬁtability, investment and corporate growth: An anatomy of Chinese industrialization

This work explores the dynamics of the ‘virtuous circle’ driving the impressive Chinese catching-up and growth by investigating the micro relationships linking productivity, proﬁtability, investment and growth, based on China’s manufacturing ﬁrm-level dataset over the period 1998–2007. Interestingly and somewhat puzzlingly, we ﬁnd that productivity variations, rather than relative levels, are the prevalent productivity-related determinant of ﬁrm growth. Moreover, the direct relation between proﬁtability and ﬁrm growth is much weaker and its contribution to the explanation of the different rates of ﬁrm growth is almost negligible. The only visible proﬁtability-growth relationship is mediated via investment. Firm’s contemporaneous and lagged proﬁtabilities display positive and signiﬁcant effect on the probability to report an investment spike, and, in turn, investment activities are related to higher ﬁrm growth. 2017
Antimicrobial Resistance Profile of Bacterial Isolates from Urinary Tract Infections in Companion Animals in Central Italy

The available data on antimicrobial resistance in pets are limited compared to those collected for food-producing animals. Bacterial urinary tract infections are some of the most important indications for antimicrobial use in pets, and empiric antimicrobial treatments are often administered in the presence of clinical signs. In this study, the results obtained from the laboratory investigations carried out on dogs and cats with urinary tract infections coming from veterinary clinics and practices in Central Italy were evaluated to provide additional data concerning the bacterial urinary pathogens and their antimicrobial resistance patterns in pets. A total of 635 isolates were collected from urine samples. Escherichia coli was the most common species recovered in dogs and cats, followed by Proteus mirabilis and Enterococcus spp. Furthermore, it was possible to isolate bacteria not usually described in other studies concerning pets such as Pantoea dispersa, Raoultella ornithinolytica, and Pasteurella pneumotropica (also known as Rodentibacter pneumotropicus). Based on the antimicrobial susceptibility results, 472/635 (74.3%) isolates were resistant to at least one antibiotic and 285/635 (44.8%) isolates were classified as multidrug-resistant. Monitoring the antibiotic resistance profiles in pet infections is important not only for the public health implications, but also to collect data useful for the treatment of diseases in pets.
Suzaku Observations of Metal Distributions in the Intracluster Medium of the Centaurus Cluster

We report the first observations of metal distributions in the intracluster medium of the Centaurus cluster up to ~0.17 r_180 with Suzaku. Radial profiles of the O, Mg, Si, S, Ar, Ca, and Fe were determined at the outer region of the cluster, and their variations appear to be similar to each other. Within the cool core region (r 0.07 r_180), all the abundances were almost constant at 0.5 solar. The derived MLRs were comparable to those of the other clusters. This suggests that the cD galaxy of the Centaurus cluster efficiently supplies more Fe than the other clusters.