Miracle-dz/UniFAR-FTUs huggingface dataset:
A Synchronous and Iterative Flux-Correction Formalism for Coupled Transport Equations

Many problems of fluid dynamics involve the coupled transport of several, density-like, dependent variables (for instance, densities of mass and momenta in elastic flows). In this paper, a conservative and synchronous flux-corrected transport (FCT) formalism is developed which aims at a consistent transport of such variables. The technique differs from traditional FCT algorithms in two respects. First, the limiting of transportive fluxes of the primary variables (e.g., mass and momentum) does not derive from smooth estimates of the variables, but it derives from analytic constraints implied by the Lagrangian form of the governing continuity equations, which are imposed on the specific mixing ratios of the variables (e.g., velocity components). Second, the traditional FCT limiting based on sufficiency conditions is augmented by an iterative procedure which approaches the necessity requirements. This procedure can also be used in the framework of traditional FCT schemes, and a demonstration is provided that it can significantly reduce some of the pathological behaviors of FCT algorithms. Although the approach derived is applicable to the transport of arbitrary conserved quantities, it is particularly useful for the synchronous transport of mass and momenta in elastic flows, where it assures intrinsic stability of the algorithm regardless of the magnitude of the mass-density variable. This latter property becomes especially important in fluids with large density variations, or in models with a material “vertical” coordinate (e.g., geophysical hydrostatic stratified flows in isopycnic/isentropic coordinates), where material surfaces can collapse to zero-mass layers admitting, therefore, arbitrarily large local Courant numbers.
Leakage from higher modes on microstrip line with application to antennas

Some confusion in the literature is clarified regarding the properties of microstrip-line higher modes in the neighborhood of cutoff. It is shown that those modes become leaky in that range; with the aid of the steepest-descent plane, one finds that the continuous spectrum can be characterized in a highly convergent manner by essentially a single leaky mode. The leakage occurs in two forms: a surface wave and a space wave. For structures without a top cover, it is found that almost all of the leakage is in the form of a space wave, so that an efficient leaky-wave antenna of particularly simple configuration may be designed that consists of just a length of uniform microstrip line fed in its first higher mode. An accurate leaky-wave analysis is developed that explains quantitatively the performance features and the limitations of this class of antennas.
Performance contest between MLE and GMM for huge spatial autoregressive models

Abstract When using maximum likelihood estimation for spatial models, a well known problem is the computation of the logarithm of the determinant of the Jacobian, especially for problems with a huge number of observation units. In the recent literature there are various promising approaches to account for these numerical difficulties, relying on alternative decompositions or approximations. Recently, a general method of moments approach for estimating these models was developed. We compare all these different approaches with respect to their root mean-squared errors of the estimates and investigate the size and power of hypotheses tests with respect to the spatial correlation and the regression parameters.
Face recognition based on a two-view projective transformation using one sample per subject

In this study, the authors propose a novel face recognition algorithm based on geometric features to alleviate the one sample per subject problem, called the robust estimation system. Our application adopts both local and global information for robust estimation. The authors utilise the original images from the ORL and Yale databases for evaluation. The images of the FERET database are pre-processed to extract the pure face region and execute the affine transformation. The authors roughly divide the face images into four block images that are most significant for the face: left eye, right eye, nose and mouth. The feature extraction using magnitude of first-order gradients, based on geometric features, is ideal for estimating a single sample. While conducting the classification stage, local features are putatively matched before processing or the global random sample consensus robust estimation features, with the aim of identifying the fundamental matrix between two matched face images. Finally, similarity scores are calculated, and the candidate awarded the highest score is designated the correct subject. Experiments were implemented using the FERET, ORL and Yale databases to demonstrate the efficiency of the proposed method. The experimental results show that our algorithm greatly improves recognition performance compared with the existing methods.
On the cloud processing of aerosol particles: An entraining air‐parcel model with two‐dimensional spectral cloud microphysics and a new formulation of the collection kernel

A study has been made of the modification of marine aerosol particles due to cloud processes and the impact of the modified aerosols on the microphysical structure of future clouds. For this purpose, an entraining air‐parcel model with two‐dimensional spectral cloud microphysics was used. In order to treat collision/coalescence processes in the two‐dimensional microphysical module, a new realistic and continuous formulation of the collection kernel was developed. Based on experimental and theoretical data, the kernel covers the entire investigated size range of aerosols, cloud and rain drops, that is the kernel combines all important collision/coalescence processes such as the collision of cloud drops as well as the impaction scavenging of small aerosols by big raindrops. Since chemical reactions in the gas phase and in cloud drops have an important impact on the physico‐chemical properties of aerosol particles, the parcel model has been extended by a chemical module describing gas‐phase and aqueous‐phase chemical reactions. However, it is shown that in the numerical case‐studies presented in this paper the modification of aerosols by chemical reactions has a minor influence on the microphysical structure of future clouds. The production of large aerosol particles by collision/coalescence processes is mainly responsible for an enhanced formation of rain in a second cloud event. Copyright © 2003 Royal Meteorological Society
Evaluation of the Effectiveness of Video-Modeling for Teaching Articulation in Verbal Children With Autism Spectrum Disorder

Verbal children with autism often present communication difficulties such as articulation disorders. As a result they are not able to communicate effectively and sometimes their attempts to communicate may take the form of challenging behaviors. Previous studies have demonstrated the efficacy of video-modeling in increasing the communication skills in verbal children with autism. Moreover other studies have shown that video-modeling, as a treatment package, can maintain strength and generalize all the newly learned skills. In this study, we will extend the use of video-modeling across 3 verbal children who have been diagnosed with autism and simultaneously exhibit articulation disorders in phoneme /r/ in three different positions within words. We will implement multiple baseline design across behaviors (i.e., target phoneme at the beginning, middle, and end of the words). The effectiveness will be evaluated by focusing on pre to follow-up changes of our participants’ articulation.
Adaptive and learning calibration of magnetic compass

Magnetic compasses are widely used in vehicle navigation systems to measure the vehicle headings with respect to the Earth's magnetic north. Due to the local variation of the Earth's magnetic flux density and the induced magnetic field of the magnetized vehicle body, continuous calibrations of magnetic compasses are required to maintain accurate heading measurements. In this paper two different online compass calibration methods, one based on the parameter adaptation algorithm and the other based on the functional learning algorithm, are developed to achieve online self-calibration function for a flux-gate compass using GPS heading measurements as reference signals. Simulation and experiment results show that the algorithms are effective in removing the magnetic biases and providing a reliable method to improve the magnetic compass performance.
Publications of the Astronomical Society of the Pacific 93:752-755, December 1981 LOWER ATMOSPHERE CHANGES INFERRED FROM VARIATIONS IN BETELGEUSE’S LINEAR POLARIZATION

Variations in Betelgeuse’s linear polarization were intensively monitored over the nearly eight-month interval which comprised the 1980-81 observing season. As was the case in the preceding observing season, significant ordered (as opposed to stochastic) polarization changes were detected. These variations are explained as being due to the waxing and waning, and motion of large-scale elements of the star’s lower atmosphere, and are likely to be a manifestation of nonradial pulsations.
Sinonasal NUT carcinoma: A retrospective case series from a single institution

Purpose Nuclear protein in testis (NUT) carcinoma is a rare, aggressive tumor defined by the presence of NUT gene rearrangement. The aim of this study was to describe the clinical, radiologic, and biological features of sinonasal NUT carcinoma. Methods We retrospectively investigated NUT expression with clinicopathologic features in 145 cases with sinonasal malignancies diagnosed from January 2017 to December 2021 and reviewed the reported cases. Results Three (3/145, 2.07%) cases showed strong nuclear expression for NUT immunohistochemical, including one male and two females with ages from 37 to 57 years (mean, 45.33 years). All three cases involved the nasal cavity and sinuses; one of them involved the orbit and intracranial area. Histologically, all subjects showed poorly differentiated, small round cell morphology with distinct nuclei. All patients received surgery and chemoradiotherapy. One patient died of the disease 13 months after diagnosis, and two survived 12 and 15 months, respectively, without evidence of tumor recurrence. 51 cases of sinonasal NUT carcinoma (mean age 40.96 years) have been described to date. Among them, 28 are male, and 23 are female. Most cases expressed p63, AE1/AE3, as well as p40. Conclusion NUT carcinoma is a rare and aggressive disease with a poor prognosis. It is crucial to perform NUT rearrangement-related tests for differential diagnosis of poorly differentiated/undifferentiated tumors in the nasal cavity and sinuses.
Algebraic classification of actions invariant under generalized flip moves of two‐dimensional graphs

Statistical models defined on 2‐dimensional graphs are classified which are invariant under flip moves, i.e., certain local changes of the adjacency structure of the graphs. The special case of regular graphs of degree 3—which are duals of 2‐dimensional triangulations—corresponds to topological models and the classification leads to metrized, associative algebras. As a novel feature flip invariant models on regular graphs of degree 4 are classified by Z2‐graded metrized associative algebras. They give rise to invariants for checkered graphs. Moreover, the general case of graphs with vertices of arbitrary degree (where degree 3 does occur) is discussed. Using structure theorems for (graded,) metrized, associative algebras we prove that only the simple ideals contribute to the partition function of such models. The partition functions are computed explicitly and reveal the invariant structures of the graph under the flip moves.
Reliability and current carrying capacity of carbon nanotubes

The current-carrying capacity and reliability studies of multiwalled carbon nanotubes under high current densities (>109 A/cm2) show that no observable failure in the nanotube structure and no measurable change in the resistance are detected at temperatures up to 250 °C and for time scales up to 2 weeks. Our results suggest that nanotubes are potential candidates as interconnects in future large-scale integrated nanoelectronic devices.
Effects of Melatonin Administration on Post-Stroke Delirium in Patients with Intracerebral Hemorrhage

Post-stroke delirium (PSD) after intracerebral hemorrhage (ICH) is considered to be even more detrimental compared to that after ischemic stroke. Treatment options for post-ICH PSD remain limited. This study aimed at investigating to what extent prophylactic melatonin administration may have beneficial effects on post-ICH PSD. We performed a mono-centric, non-randomized, non-blinded, prospective cohort study, including 339 consecutive ICH patients admitted to the Stroke Unit (SU) from December 2015 to December 2020. The cohort consisted of ICH patients who underwent standard care (defined as the control group) and ICH patients who additionally received prophylactic melatonin (2 mg per day, at night) within 24 h of ICH onset until the discharge from the SU. The primary endpoint was post-ICH PSD prevalence. The secondary endpoints were: (i) PSD duration and (ii) the duration of SU stay. The PSD prevalence was higher in the melatonin treated cohort compared to the propensity score-matched (PSM) control group. Post-ICH PSD patients receiving melatonin had shorter SU-stay durations, and shorter PSD durations, although not statistically significant. This study shows no efficacy in limiting post-ICH PSD with preventive melatonin administration.
Atlantis basin, Sirenum Terrae, Mars: geological setting and astrobiological implications

The accomplishment of detailed geomorphological studies is a prerequisite for the location of regions in which the prevailing conditions in the past, or at present, may allow the development of possible life forms. The Atlantis basin, located in Sirenum Terrae, Southern hemisphere of Mars, is one of these astrobiologically interesting regions, where the existence of geological features such as ancient volcanic edifices, sedimentary deposits of an ancient lake and recent gullies seem to indicate the long-term presence of a thermal source and a water reservoir deep and stable enough to sustain biological processes. Here we describe the most relevant topographic and geomorphologic features in the region, highlighting the possibility for liquid water to have been present in the basin and outskirts in different moments of Mars' history. We also apply this analysis to an initial discussion of the influence of the hydrogeological evolution of the region in the putative development and/or survival of life forms in Atlantis basin.
Uterine Artery and Arcuate Vessels Doppler in Patients with Abnormal Uterine Bleeding Using Copper Intrauterine Contraceptive Device (IUCDs) and Combined Oral Contraceptive Pills (COCPs)

Objectives: The aim of our study was to perform a comparative evaluation of the uterine and arcuate vessels Doppler indices in four groups of women: Intrauterine contraceptive device (IUCD) users with and without abnormal uterine bleeding (AUB), combined oral contraceptive users and women not using any contraceptive. Materials and Methods: This prospective longitudinal analytic study was conducted in a tertiary university hospital during the period between September 2018 and March 2019. The study included 160 women with ages ranging from 20-35 years enrolled in 4 groups. Group 1: patient on IUCDs with AUB (n=40) Group 2: Patients on IUCD without AUB (n=40) Group 3: Patients on COCPs and without AUB (n=40) Group 4: Women not using aby contraceptive (n=40). The uterine artery and arcuate vessels were identified by transvaginal (TVUS) at the level of the internal os of the cervix. Real-time imaging and pulsed wave transvaginal Doppler assessment of the blood flow was performed to measure the blood flow indices. Results: There was a statistically significant difference between the three patients’ groups and the control group in endometrial thickness ( p=0.004 ), uterine artery PI ( p<0.001 ) , arcuate vessel PI ( p<0.001 ) and arcuate vessel RI ( p<0.001 ). However there was no significant difference regarding uterine artery RI ( p=0.112 ). Additionally, there was statistically significant difference between endometrial thickness ( p<0.001 ), uterine artery PI ( p=0.036 ), arcuate vessel PI ( p<0.001 ) and arcuate vessel RI ( p<0.001 ) when comparing the groups IUCD with and without AUB. Yet, there was no statically significant difference regarding uterine artery RI. Finally, ROC curve analysis showed the optimal cutoff values for the uterine artery PI (1.9), the arcuate vessels PI (0.9) and the arcuate vessels RI (0.49) to predict AUB in patients with IUCD. Conclusion : We identified a correlation between increased bleeding and Doppler indices. Most of the uterine artery and arcuate vessels Doppler indices were lower in the group with IUCD and AUB than in non-bleeding group. Thus the blood flow is increased during bleeding in women with IUCD-induced AUB than in those with normal menstruation. This indicates that there is an increase in uterine blood flow occurs in cases of IUCD - induced abnormal uterine bleeding.
A Bibliometric Review of the Business Platforming Literature: Theoretical Cornerstones and Research Trends

—Scholarly interest in business platforms has risen consistently in the past 10 years. As a pervasive topic in the business literature, business platforms are addressed not only in the management ﬁeld but also in domains, such as economics, strategy, marketing, engineering, and information technology. We provide a review of the literature on business platforms using a bibliometric methodology.Indoingso,weextendthescopeofresearchbyinclud-ingthecloselyrelatedtopicofbusinessecosystems.Bibliometric techniques allow consideration of a broad selection of papers with a consequent reduction in bias. We start with a selection of 1914 publications from 2009 to 2022. First, we identify the theoretical cornerstones employing cocitation analysis. This technique allows us to determine the fundamental literature, including documents that date back to previous decades. Then, we employ bibliographic coupling to determine the most recent research trends, limiting the span to the 2018–2022 period. Finally, we propose a research agenda based on the identiﬁed gaps in current research trends.
SELECCIÓN CONTRA DISPLASIA DE CADERA CANINA EN EL OVEJERO ALEMÁN

Canine hip dysplasia (CHD) is a progressive and disabling disorder in large dog breeds, such as the German Shepherd dog. Breeding sires and dams free of dysplasia is the only way to reduce its incidence. Several diagnostic methods have been developed based on radiographic examination, on the basis of which dogs are selected for breeding. CHD has a polygenic hereditary basis and environmental influence, with a median to low heritability (ca. 0,20 to 0,40), so the progress in phenotypic selection has been slow. In Argentina, the prevalence of dysplasia in German Shepherd dogs remains high (> 25%) and it is impossible to predict its incidence in the offspring of the breeding stock. Some countries have implemented a selection based on the estimated breeding value, obtaining an important advance. Genome-wide association studies have revealed numerous CHD-associated markers and several candidate genes have been found that point to the possibility of implementing genomic selection in the near future. Key words: canine hip dysplasia, German Shepherd dog, phenotypic selection, genomic selection, estimated breeding value
High-quality genome assembly and genetic mapping reveal a gene regulating flesh color in watermelon (Citrullus lanatus)

The unique color and type characteristics of watermelon fruits are regulated by many molecular mechanisms. However, it still needs to be combined with more abundant genetic data to fine-tune the positioning. We assembled genomes of two Korean inbred watermelon lines (cv. 242-1 and 159-1) with unique color and fruit-type characteristics and identified 23,921 and 24,451 protein-coding genes in the two genomes, respectively. To obtain more precise results for further study, we resequenced one individual of each parental line and an F2 population composed of 87 individuals. This identified 1,539 single-nucleotide polymorphisms (SNPs) and 80 InDel markers that provided a high-density genetic linkage map with a total length of 3,036.9 cM. Quantitative trait locus mapping identified 15 QTLs for watermelon fruit quality-related traits, including β-carotene and lycopene content in fruit flesh, fruit shape index, skin thickness, flesh color, and rind color. By investigating the mapping intervals, we identified 33 candidate genes containing variants in the coding sequence. Among them, Cla97C01G008760 was annotated as a phytoene synthase with a single-nucleotide variant (A → G) in the first exon at 9,539,129 bp of chromosome 1 that resulted in the conversion of a lysine to glutamic acid, indicating that this gene might regulate flesh color changes at the protein level. These findings not only prove the importance of a phytoene synthase gene in pigmentation but also explain an important reason for the color change of watermelon flesh.
The impact of rehabilitation on the community life of stroke survivors in Accra, Ghana

Background Return to pre-stroke life is of great importance to stroke survivors, their families and communities as stroke affects their ability to perform activities of daily living. It is therefore important to understand the impact of stroke rehabilitation on the community life of stroke survivors in Ghana as there are limited data. Objectives Our study aimed to explore and describe the views of stroke survivors on the impact of stroke rehabilitation on their community life. Method A descriptive qualitative study was conducted among 15 stroke survivors recruited from three selected hospitals in the Greater Accra Region of Ghana. Individual in-depth interviews were conducted using a semi-structured interview guide. Interview transcripts were analysed using thematic analysis and this gave rise to several themes. Results The authors found that stroke left most of the survivors with functional limitations and they required various degrees of assistance to perform their activities of daily living. As the stroke survivors received rehabilitation, most of them mentioned improvements in function. However, most participants were still unable to return to work and enjoy social or leisure activities. Conclusion Our study shows that attention needs to be given to the occupational and social management in rehabilitation as much as it is given to the physical management, to improve community integration post-stroke. Clinical implications Our study highlights the need to take into consideration the occupational and social aspects of life as part of the rehabilitation process for stroke survivors.