Miracle-dz/UniFAR-FTUs huggingface dataset:
QML Estimation of Spatial Dynamic Panel Data Models with Time Varying Spatial Weights Matrices

Abstract This paper investigates the quasi-maximum likelihood estimation of spatial dynamic panel data models where spatial weights matrices can be time varying. We find that QML estimate is consistent and asymptotically normal. We investigate marginal impacts of explanatory variables in this system via space–time multipliers. Monte Carlo results are reported to investigate the finite sample properties of QML estimates and marginal effects. When spatial weights matrices are substantially varying over time, a model misspecification of a time invariant spatial weights matrix may cause substantial bias in estimation. Slowly time varying spatial weights matrices would be of less concern. RÉSUMÉ la présente communication se penche sur l'estimation du quasi maximum de vrai semblance de modèles de données du groupe des dynamiques spatiales, où les matrices de poids spatiales peuvent varier en fonction du temps. Nous relevons que l'estimation de QML est homogène et normale sur un plan asymptotique. Nous nous penchons sur des impacts marginaux de variables causales dans ce système, par le biais de multiplicateurs spatio-temporels. Des résultats Monte Carlo sontfournis pour l'examen d’échantillons finis d'estimations QML et d'effets marginaux. Lorsque les matrices de poids spatiales varient de façon substantielle avec le temps, une erreur de spécification de modèle d'une matrice de poids spatiale ne variant pas avec le temps risquerait de fausser sensiblement les estimations. Les matrice de poids spatiale variant avec le temps auraientune importance moindre. RESUMEN Este estudio investiga la estimación casi-máxima de probabilidad de semejanza de modelos dinámicos de datos de panel en donde las matrices ponderadas espaciales pueden variar con el tiempo. Indicamos que la estimación QML es constante y asimptóticamente normal. Investigamos impactos marginales de variables explicativas en este sistema mediante multiplicadores espacio-temporales. Se informan los resultados de Monte Carlo para investigar las propiedades de muestra finitas de las estimaciones QML y los efectos marginales. Cuando las matrices ponderadas espaciales varían considerablemente en el tiempo, los errores de especificación del modelo para una matriz ponderada espacial invariable en el tiempopodrían causar una considerable parcialidad en la estimación. Las matrices de pesos espaciales variables lentos serían menos preocupantes.
The Double-Sided Effect of Empowering Leadership on Constructive Voice Behavior: Focusing on the Mediating Effects of Task Significance and Task Overload

Focusing on job characteristics, this study examined the double-sided effect of empowering leadership on constructive voice behavior. We obtained and analyzed a total of 294 questionnaire responses from pairs of subordinates and supervisors in various industries in Korea. The results supported our hypotheses that task significance and task overload partially mediate the relationship between empowering leadership and constructive voice behavior. Specifically, we found that empowering leadership can promote constructive voice behavior by inducing a recognition of task significance and can suppress constructive voice behavior by causing task overload. These results confirm that empowering leadership indirectly influences constructive voice behavior through job characteristics. These findings have important theoretical and practical implications and highlight directions for future research.
The Danish Version of the 20-Item Prosopagnosia Index (PI20): Translation, Validation and a Link to Face Perception

Developmental prosopagnosia (DP) is a neurodevelopmental condition characterized by face recognition problems. Psychometrically sound self-report measures of face recognition problems are important tools in classification of DP. A widely used measure of such problems is the 20-item prosopagnosia index (PI20). Here, we present a Danish translation of the PI20 (PI20DK). We administered the PI20DK alongside three objective measures of face and object processing performance to 119 participants to validate the PI20DK. Further, we assess the underlying factor structure of the PI20DK. Finally, as the first study in the field, we investigate the association between self-reported face recognition ability and face perception performance. The project was preregistered prior to data collection. The results suggest excellent convergent validity, discriminant validity and internal consistency for the PI20DK. A confirmatory factor analysis, however, indicates a suboptimal fit of the PI20DK to a one factor solution. An investigation of the association between the PI20DK and face perception suggests that the poor fit may reflect that the PI20DK measures problems with face recognition in general and not specifically face memory problems.
Modeling and Observations of Martian Stationary Waves

Abstract A linear σ-coordinate model is used in conjunction with a Mars GCM northern hemisphere winter zonal mean circulation to study the orographically forced stationary disturbances on Mars. The disturbances are compared to their counterparts on Earth and to the bright streak data from the Mariner 9 and Viking images. Diabatic heating on Mars is predominantly radiative, and inversion near the surface causes mountains to cool and depressions to heat the atmosphere. Due to the short radiative timescales and large meridional surface pressure gradient, the atmosphere responds to radiative forcing by changing its temperature and pressure gradient. The strong meridional flow near the equator and short radiative timescales combine to make responses to mechanical and thermal forcing of the same order in the tropics and in parts of the northern midlatitudes. In the subtropics, small zonal and meridional flows allow the response to radiative forcing to dominate. All these factors contribute to making the Martian.
Unconventional photoluminescence upconversion from PbS quantum dots

The authors report a type of photoluminescence upconversion that is directly attributable to the strong quantum confinement of charge carriers in PbS nanocrystals and does not involve the usual mechanism of thermally populated intermediate states. Absorption, emission, and excitation spectroscopy, combined with a simple spectral model, reveals that the upconversion process is consistent with single-photon absorption by an extremely broad single nanocrystal absorption line. This type of upconversion is a result of the time-energy uncertainty principle, indicating unusually rapid dephasing in this system, and stands in direct contrast to the mechanisms proposed for upconversion in other types of nanocrystal.
Chemical and morphological stability of aluminum tris(8-hydroxyquinoline) (Alq/sub 3/): effects in light-emitting devices

Aluminum tris(8-hydroxyquinoline) (Alq/sub 3/) is presently considered one of the most reliable electron transporting and emitting materials for molecular-based organic light-emitting diodes (OLEDs). This paper summarizes the investigations that our group, over the past three years, have conducted into the physical and chemical response of Alq/sub 3/ in the presence of small amounts of moisture. The characteristic evolution of 8-hydroxyquinoline (8-Hq), a volatile byproduct of the hydrolysis of Alq/sub 3/, was quantified using thermogravimetric and gas chromatography/mass spectroscopy (GC/MS) analysis as a function of sample morphology. Annealed (more crystalline) samples exhibited greater stability to hydrolysis than freshly sublimed films, at the expense of photoluminescence (PL) efficiency. These phenomena are discussed with respect to failure mechanisms observed in Alq/sub 3/-based OLEDs.
Evaluation of Attitudes toward Corporal Expression in Primary School Students: Validation and Psychometric Properties of a Questionnaire

The content of corporal expression, usually forgotten by some teachers, has been shown to have favorable effects on the physical, social, and psychological health of students at all levels of education. Likewise, students’ attitudes should be positively influenced in the school environment in order to improve the teaching–learning process of the different contents taught. The purpose of this study was to provide the factor structure and validity of a questionnaire used to gauge pupils’ attitudes toward corporal expression. The sample consisted of 709 students in the last cycle of primary school from schools in the region of Extremadura (Spain). Reliability testing as well as confirmatory and exploratory factor analyses were conducted. The findings revealed a factor structure with three dimensions composed of 30 items with high reliability (Cronbach’s alpha = 0.85–0.90) and good and exceptional goodness-of-fit values. As a result, the questionnaire can be seen as a quick and simple instrument to use in analyzing students’ attitudes toward corporal expression and enabling stakeholders to take action to support it.
3D Printed Functionalized Nanocellulose as an Adsorbent in Batch and Fixed-Bed Systems

Nanocellulose, a refined form of cellulose, can be further functionalized on surface-active sites, with a catalyst as a regenerative agent. Newly developed adsorbents are expected to have the characteristics of good and rapid adsorption performance and regeneration properties with flexible structure using 3D printing technology. In this work, the adsorption performance of 3D printed functionalized nanocellulose was investigated using batch and fixed-bed column adsorption. Kinetics adsorption studies were divided into different adsorption models, with the pseudo-second order model showing a better correlation coefficient than the pseudo-first order and intraparticle diffusion models. The Langmuir and Thomas models were used to calculate the adsorption performance of batch and fixed-bed columns. Given the catalytic activity of Fenton oxidation, the fixed-bed column was regenerated up to five adsorption-desorption cycles, suggesting satisfactory performance of the column, with a slightly reduced adsorption capacity.
Research on the Damage of the Central Nervous System Lymphoma to the Nervous System

Management of central nervous system (CNS) lymphoma requires multidisciplinary care. The disease can manifest in the context of immunocompromised states or in the context of chronic infections. Nervous system damage from this lymphoma has highly variable presentation that is dependent on the location of the tumor lesions. Damage from disease progression can lead to lasting neurologic deficits and even death. However, some lesions are a consequence of radiation-induced neurotoxicity. This review discusses the sources of and consequences of brain damage due to tumor damage and the associated effect of clinical therapies. We discuss workup, management, and treatments. These include chemotherapy and radiation techniques. We discuss potential complications and avoidance strategies. The review will serve as a user-friendly resource for clinicians.
Brief report: Assessment of mucosal barrier integrity using serological biomarkers in preclinical stages of rheumatoid arthritis

Background The pathogenesis of rheumatoid arthritis (RA) is believed to initiate at mucosal sites. The so-called ‘mucosal origin hypothesis of RA’ postulates an increased intestinal permeability before disease onset. Several biomarkers, including lipopolysaccharide binding protein (LBP) and intestinal fatty acid binding protein (I-FABP), have been proposed to reflect gut mucosa permeability and integrity, while serum calprotectin is a new inflammation marker proposed in RA. Methods We analyzed serum samples of individuals genetically at increased risk of RA in a nested-case-control study. Participants from a longitudinal cohort of first-degree relatives of RA patients (SCREEN-RA cohort) were divided into three pre-clinical stages of RA, based on the presence of risk factors for subsequent RA onset: 1) low-risk healthy asymptomatic controls; 2) intermediate-risk individuals without symptoms, but with RA-associated auto-immunity; 3) high-risk individuals with clinically suspect arthralgias. Five patients with newly diagnosed RA were also sampled. Serum LBP, I-FABP and calprotectin were measured using commercially available ELISA kits. Results We included 180 individuals genetically at increased risk for RA: 84 asymptomatic controls, 53 individuals with RA-associated autoimmunity and 38 high risk individuals. Serum LBP, I-FAPB or calprotectin concentrations did not differ between individuals in different pre-clinical stages of RA. Conclusion Based on the serum biomarkers LBP, I-FABP and calprotectin, we could not detect any evidence for intestinal injury in pre-clinical stages of RA.
Hard x-ray focusing with extremely long compound refractive lens

We present results of study of optical properties of extremely thick refractive lens when the thickness (or length) of a compound refractive lens is comparable with its focal distance. We tested a 2D parabolic compound refractive lens composed from 300-500 elements. Each element is a bi-concave lens made from aluminum with the curvature radius R = 0.2 mm and thickness 1 mm. Special long holders were designed and manufactured to keep up to 500 of elements. As far as the thin lens approximation is not valid we developed and used accurate theory of long parabolic compound lens for ray-tracing analysis. The experimental measurements were performed for the X-ray energies E = 20-30 keV. The measured focus distance and effective aperture correlate with the theory.
Exploring zero-shot and joint training cross-lingual strategies for aspect-based sentiment analysis based on contextualized multilingual language models

ABSTRACT Aspect-based sentiment analysis (ABSA) has attracted many researchers' attention in recent years. However, the lack of benchmark datasets for specific languages is a common challenge because of the prohibitive cost of manual annotation. The zero-shot cross-lingual strategy can be applied to solve this gap in research. Moreover, previous works mainly focus on improving the performance of supervised ABSA with pre-trained languages. Therefore, there are few to no systematic comparisons of the benefits of multilingual models in zero-shot and joint training cross-lingual for the ABSA task. In this paper, we focus on the zero-shot and joint training cross-lingual transfer task for the ABSA. We fine-tune the latest pre-trained multilingual language models on the source language, and then it is directly predicted in the target language. For the joint learning scenario, the models are trained on the combination of multiple source languages. Our experimental results show that (1) fine-tuning multilingual models achieve promising performances in the zero-shot cross-lingual scenario; (2) fine-tuning models on the combination training data of multiple source languages outperforms monolingual data in the joint training scenario. Furthermore, the experimental results indicated that choosing other languages instead of English as the source language can give promising results in the low-resource languages scenario.
Likelihood-Based Item-Fit Indices for Dichotomous Item Response Theory Models

New goodness-of-fit indices are introduced for dichotomous item response theory (IRT) models. These indices are based on the likelihoods of number-correct scores derived from the IRT model, and they provide a direct comparison of the modeled and observed frequencies for correct and incorrect responses for each number-correct score. The behavior of Pearson’s X 2 (S-X 2) and the likelihood ratio G 2 (S-G 2) was assessed in a simulation study and compared with two fit indices similar to those currently in use (Q1-X 2 and Q 1-G 2). The simulations included three conditions in which the simulating and fitting models were identical and three conditions involving model misspecification. S-X 2 performed well, with Type I error rates close to the expected . 05 and . 01 levels. Performance of this index improved with increased test length. S-G 2 tended to reject the null hypothesis too often, as did Q 1-X 2 and Q 1-G 2. The power of S-X 2 appeared to be similar for all test lengths, but varied depending on the type of model misspecification.
CCD surface photometry of galaxies with dynamical data. II. UBR photometry of 39 elliptical galaxies

Intrinsic properties of elliptical galaxies and the mechanisms of their formation and evolution are discussed on the basis of high-precision, multicolor, surface photometry of 39 elliptical galaxies and measurements of rotation curves and velocity dispersion profiles. Using the data collected, a number of correlations between the characteristic parameters of the stellar population of the galaxies have been made to explore their structure and kinematics. The luminosity dependence of color gradients is a good discriminant among various models of galaxy formation. The lowest luminosity galaxies in the sample do not show any color gradients. They have boxy isophotes, and are also rotationally flattened. These properties may be related to the fact that they are companions of larger ellipsoidal systems and it could also provide an important clue to the formation of ellipticals. 78 refs.
Novel InP-channel HEMTs grown by organometallic vapor phase epitaxy

The growth and fabrication of high performance InP-channel HEMTs with transconductances as high as 335 mS/mm, low output conductances of 6 mS/mm, and high terminal breakdown voltages are discussed. It is shown that the AlInAs HEMTs have microwave gains as high as 8 dB at 30 GHz with f/sub T/ and f/sub max/ of 38 and 97 GHz. The device operate as power HEMTs at 18 GHz and exhibit power outputs of 0.34 W/mm and efficiencies of 26%. The results and estimated maximum achievable power output of 1.3 W/mm demonstrate the potential of the AlInAs/InP HEMT for power microwave applications. <<ETX>>
Efficacy and safety evaluation of complete intrafascial prostatectomy in suspected prostate cancer patients with dysuria: a retrospective cohort study

Background Suspected localized prostate cancer (PCa) patients with dysuria Complete intrafascial prostatectomy (CIP) can remove the whole prostate gland with the maximal retain of adjacent normal tissues around the prostate, and can be applied in some suspected localized prostate cancer (PCa) patients with dysuria. However, precious few studies have assessed the efficacy and safety of CIP in these patients without preoperative needle biopsies. Methods In this retrospective single-arm cohort study, all 22 suspected PCa patients with dysuria who underwent CIP at our hospital were enrolled. The clinical data including age, prostate-specific antigen (PSA), free-serum PSA, prostate volume, perioperative and postoperative complications were collected. The PSA level at 6 weeks after CIP and recoveries of urinary continence and erectile function were acquired in the follow-up procedures, and were used as the main measurements of efficacy and safety for CIP respectively. Results The patients had an average age of 71.91±8.29 years and an average preoperative PSA level of 10.75±4.25 ng/mL. The operations for all 22 patients were successfully completed. The average operation time was 135.20±41.44 min (range, 40.0–215.0 min), and the average blood loss volume was 128.64±145.09 mL. In total, 17 patients (77.27%) had PCa confirmed by postoperative pathology, and 5 patients (22.73%) had benign prostatic hyperplasia. The PSA level dropped to 0.010±0.004 ng/mL at 6 weeks after surgery. According to the loose criteria to assess urinary incontinence, the patients achieved continence rates of 63.6% immediately after the operation, 95.5% at 1 month, and 100% at 3 months. According to the strict criteria, the continence rates immediately, and at 1, 3, 6, and 9 months after surgery were 27.3%, 63.6%, 90.9%, 95.5%, and 100%, respectively. None of the patients complained of urinary obstruction symptoms after surgery. Before CIP, all the patients had erectile dysfunction and an International Index of Erectile Function 5 (IIEF-5) score of 9.64±5.91. After surgery, the patients had IIEF-5 scores at 3, 6, and 12 months of 5.45±4.43, 6.95±5.30, and 7.57±5.69, respectively. Conclusions Although the study had some limitations, CIP may be a prudent option for patients with suspected localized PCa who also present with dysuria.
Art marketing in the metaverse world: Evidence from South Korea

Abstract This study aims to describe the structural relationship between audience attitude and behavioral intention based on an audience’s experience value of a performance on a metaverse platform and their intention to accept this platform. A questionnaire was administered to the study sample audience who watched the performance on a metaverse platform at least once; we included 323 valid questionnaires in our final analysis. For the analysis, a structural equation model was performed to identify the above-mentioned relationship. Overall, the study findings demonstrate that aesthetic, which is the value of performing performances on a metaverse platform, had a major influence on performance viewing, and escapism significantly affected the use of a metaverse platform. Conversely, the educational experience of the audience did not appear significantly in the performance using the metaverse platform. Therefore, this study will be helpful in understanding how to utilize space and experience marketing functions in relation to metaverse performance and how to communicate in the future.
Thyroid Disorders Spectrum in Pediatric Endocrine Clinic; Seven-Year Experience of a Teaching Hospital in Saudi Arabia

Thyroid disorders constitute one of the major endocrine disorders in pediatric service. It includes a range of congenital versus acquired anatomic and/or functional thyroid diseases in growing children that has a spectrum of severity from severe intellectual disability effect to subclinical mild pathologies. This study was designed to analyze the demographic characteristics, clinical pattern, and severity of thyroid disorders in the pediatric endocrine clinic patients at the teaching hospital of the university over a 7-year duration. A total number of 148 patients with thyroid disorders were seen in pediatric Endocrine clinic during the time between January 2015 and December 2021. Female patients constitute 64% of them. Acquired Hypothyroidism was the commonest disorder; 34% of the cases followed by the congenital hypothyroidism (CH), then Hashimoto’s thyroiditis, and 5.8% for others. While a very small percentage was acquired hyperthyroidism. The majority of referrals were from dermatology and other service for the screening of thyroid disease as association with other autoimmune diseases with percentage of 28.3%. Next was neck swelling manifestation in 22.6%. Thyroid disorders in children, both congenital and acquired, constitute an important medical issue for pediatricians to be aware of its variable presentations, and its potential serious health consequences on the affected children if not diagnosed and treated earlier. Acquired hypothyroidism constitutes more percentage of the thyroid disorders followed in the pediatric endocrinology outpatient clinics. Congenital hypothyroidism is the second most common thyroid disorder in the outpatient unit, having the most potential complications. These results support the international studies with the female predominance in most of thyroid disorders.
On the Smarandache prime part sequences and its two conjectures1

For any positive integer n ‚ 2, the Smarandache Inferior Prime Part fpp(n)g is deflned as the largest prime less than or equal to n; The Smarandache Superior Prime Part fPp(n)g is deflned as the smallest prime greater than or equal to n. In this paper, we deflned some determinants involving the Smarandache prime part sequences, and introduced two conjectures proposed by professor Zhang Wenpeng.