Miracle-dz/UniFAR-FTUs huggingface dataset:
Characteristics and clinical outcomes of patients diagnosed with keratocone

Objectives: To describe the epidemiological and clinical profile, evolution and outcomes of keratoconus patients diagnosed in the ophthalmologic reference service of the state of Santa Catarina, Brazil. Methods: The medical records of all patients with keratoconus attended at the Cornea service of the Regional Hospital of São José, between January 2016 and December 2018 were retrospectively analyzed. The following data were extracted: sex, age, disease stage, systemic diseases, ophthalmological symptoms, adaptation of contact lenses, previous treatments, best monocular visual acuity, keratometric measurements, ophthalmological procedures, clinical outcomes. Results: The medical records of 267 patients were analyzed. The average age was 23 years (range: 06 - 60 years), 159 (59.55%) were male. 12 (4.49%) patients had already performed penetrating keratoplasty; 22 (8.24%) had performed crosslinking; 07 (2.62%) had already an intrastromal ring implant. 81 (30.34%) patients had already adapted contact lenses. 168 (62.92%) had best corrected visual acuity, of the better eye, equal to or greater than 20/40. A distribution between cases was found light, moderate and severe of: 03 (1.12%), 78 (29.21%), 157 (58.80%), respectively. Throughout the period, a total of 51 (73,9%) corneal transplants, were performed 09 (90,0%) intrastromal ring implants, 35 (32,4%) crosslinking, 22 (23,4%) contact lens adaptations were performed; 205 (76.77%) patients lost follow-up, 12 (4.49%) were discharged. Conclusion: The patients are mostly young, with moderate to severe illness and good visual acuity in the best eye. Even so many received a surgical management. The loss of clinical follow-up is an important factor in the quality of ophthalmic care in this population.
Linear Mixed-Effects Models for Human-in-the-Loop Tracking Experiment Data

Linear mixed-eﬀects models provide several beneﬁts over more traditional statistical inference tests and are particularly useful for most human-in-the-loop tracking experiment data. However, surprisingly, mixed models are virtually not used for the analysis of tracking experiment data. This paper uses linear mixed-eﬀects models to analyze combined tracking data from two previous human-in-the-loop roll tracking experiments that compared control behavior metrics collected in both a research aircraft and a motion-base simulator. In the experiments, pilots’ behavior under 10 diﬀerent motion conﬁgurations with varying motion ﬁlter gains and break frequencies was evaluated and compared to that in the real aircraft. The linear mixed-eﬀects model analysis on the combined dataset conﬁrmed the main statistical outcomes of the individual experiments. The main beneﬁts of mixed models for this type of data were demonstrated by successfully combining data from two experiments that used diﬀerent experimental conditions and of which one had an additional apparatus and the other a missing participant. Finally, the mixed-model analysis was able to explicitly test for scientiﬁcally relevant statistical diﬀerences in the dependent measures between the aircraft and simulator, as well as between both experiments.
Geotechnical properties of lateritic soil stabilized with sugarcane straw ash

An increase in population with the demand of a wider road and also maintenance of transportation infrastructure has been alarming over the past few decades. Owing to this fact investigation will be carried out on laterite soil to improve the geotechnical properties of the soil to be able to stabilize the soil to withstand the load coming on it. In this investigation agricultural waste (sugarcane straw ash) will be used at varying percentage of 0, 4, 8, 10 and 12 to stabilized the laterite soil and improve the properties of the soil. The result indicates that with the increase of SCSA in the soil sample at 4% proportion ratio the soil strength is increased and at 12% it reduced drastically. The result of the tests shows that the strength of the soil is good when 4% SCSA are added. The optimum substitute increased the load bearing capacity of the soil thereby making an improvement to the lateritic soil.
Assassins, Gods, and Androids: How Narratives and Game Mechanics Shape Eudaimonic Game Experiences

Emerging research has suggested that digital games can generate entertainment experiences beyond hedonic enjoyment towards eudaimonic experiences: Being emotionally moved, stimulated to reflect on one’s self or a sense of elevation. Studies in this area have mainly focused on individual game characteristics that elicit singular and static eudaimonic game moments. However, such a focus neglects the interplay of multiple game aspects as well as the dynamic nature of eudaimonic experiences. The current study takes a novel approach to eudaimonic game research by conducting a qualitative game analysis of three games (Assassin’s Creed Odyssey, Detroit: Become Human, and God of War) and taking systematic notes on game experiences shortly after playing. Results reveal that emotionally moving, reflective, and elevating eudaimonic experiences were elicited when gameplay notes suggested a strong involvement with the game’s narrative and characters (i.e., narrative engagement) and, in some cases, narrative-impacting choices. These key aspects, in turn, are enhanced by clean player interfaces, graphically realistic characters, close camera perspectives, tone-appropriate soundtrack scores, and both narrative-enhancing (e.g., God of War’s health mechanic) and choice-enhancing mechanics (e.g., Detroit: Become Human’s flowchart). Eudaimonic experiences were also found to evolve throughout the game, with more powerful experiences occurring near the end of the game and some narrative themes fueling the eudaimonic flow of experiences throughout the overall game narrative. This study adds to academic research studying digital games by suggesting an innovative methodological approach that provides a detailed, integrative, and dynamic perspective on eudaimonic game experiences.
Optical Investigation of a Partial Fuel Stratification Strategy to Stabilize Overall Lean Operation of a DISI Engine Fueled with Gasoline and E30

This paper offers new insights into a partial fuel stratification (PFS) combustion strategy that has proven to be effective at stabilizing overall lean combustion in direct injection spark ignition engines. To this aim, high spatial and temporal resolution optical diagnostics were applied in an optically accessible engine working in PFS mode for two fuels and two different durations of pilot injection at the time of spark: 210 µs and 330 µs for E30 (gasoline blended with ethanol by 30% volume fraction) and gasoline, respectively. In both conditions, early injections during the intake stroke were used to generate a well-mixed lean background. The results were compared to rich, stoichiometric and lean well-mixed combustion with different spark timings. In the PFS combustion process, it was possible to detect a non-spherical and highly wrinkled blue flame, coupled with yellow diffusive flames due to the combustion of rich zones near the spark plug. The initial flame spread for both PFS cases was faster compared to any of the well-mixed cases (lean, stoichiometric and rich), suggesting that the flame propagation for PFS is enhanced by both enrichment and enhanced local turbulence caused by the pilot injection. Different spray evolutions for the two pilot injection durations were found to strongly influence the flame kernel inception and propagation. PFS with pilot durations of 210 µs and 330 µs showed some differences in terms of shapes of the flame front and in terms of extension of diffusive flames. Yet, both cases were highly repeatable.
Performance Analysis of Active Large Intelligent Surfaces (LISs): Uplink Spectral Efficiency and Pilot Training

Large intelligent surfaces (LISs) constitute a new and promising wireless communication paradigm that relies on the integration of a massive number of antenna elements over the entire surfaces of man-made structures. The LIS concept provides many advantages, such as the capability to provide reliable and space-intensive communications by effectively establishing line-of-sight (LOS) channels. In this paper, the system spectral efficiency (SSE) of an active LIS system is asymptotically analyzed under a practical LIS environment with a well-defined uplink frame structure. In order to verify the impact on the SSE of pilot contamination, the SSE of a multi-LIS system is asymptotically studied and a theoretical bound on its performance is derived. Given this performance bound, an optimal pilot training length for multi-LIS systems subjected to pilot contamination is characterized and, subsequently, the number of devices that need to be serviced by the LIS in order to maximize the performance is derived. Simulation results show that the derived analyses are in close agreement with the exact mutual information in presence of a large number of antennas, and the achievable SSE is limited by the effect of pilot contamination and intra/inter-LIS interference through the LOS path, even if the LIS is equipped with an infinite number of antennas. Additionally, the SSE obtained with the proposed pilot training length and number of scheduled devices is shown to reach the one obtained via a brute-force search for the optimal solution.
A Systematic Review on the Psychological Effects of Perfectionism and Accompanying Treatment

Maladaptive perfectionism can have an injurious and consequential impact on individuals and society with effects that may contribute negatively to a wide range of mental and physical health issues. Not only does perfectionism make people more susceptible to physical and mental health disorders, but its perniciousness also makes the inevitabilities of hardship and illness more challenging to cope with when they do occur. The purpose of this review was to investigate the psychological and physical impacts of maladaptive perfectionism on individuals and best practices for accompanying treatment. A systematic review was performed to search, review, analyze, and synthesize the existing literature. Suggestions for practical treatment recommendations and potential areas of further inquiry are offered. PRISMA checklist was utilized for inclusion in the review and 118 articles met search criteria. The broader emerging themes were: etiology and progression, psychological consequences of perfectionism, and available treatments. Concerns related to the multitude of downstream psychological impacts are highlighted, including the emerging evidence regarding perfectionism as both a primary and secondary disorder along with current and emerging interventions.
Synthesis, characterization and antimicrobial activities of heteroleptic metal chelates of isoniazid and 2,2’-bipyridine

The Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes of isoniazid (L1) mixed with 2,2-bipyridine (L2) were synthesized and characterized by solubility studies, percentage metal analysis, UV-Vis spectroscopy, IR spectroscopy, conductivity measurements and magnetic moment measurements. The IR spectra revealed that the isoniazid coordinated as a bidentate ligand. In Co(II) and Ni(II) complex it coordinated via the carbonyl oxygen (C=O) and the amide nitrogen, while in the Cu(II), Mn(II) and Zn(II) complexes it coordinated using the amide and carbonyl oxygen via enolization. Bipyridine also bonded to the metals as a bidentate ligand through the pyridinic nitrogen atoms. The magnetic data showed that all the complexes were paramagnetic with values ranging from 1.70 to 5.0 B.M. , except [Zn(Is)(Bipy)(H2O)Cl2] which was diamagnetic. The conductivity results revealed that the Cu(II), Mn(II), Zn(II) complexes were 1:1 electrolytes while Co(II) was 1:2 electrolyte and [Ni(Is)(Bipy)Cl2] was non-electrolytic in nature. The antibacterial activities of the ligands and the complexes as evaluated via the agar diffusion method showed that the complexes displayed moderately high antimicrobial activity in comparison with the free ligands when tested against ten strains of bacteria. KEY WORDS: Isoniazid, Electronic structure, Geometry, Antimicrobial activity, Electrolytic nature, Magnetic moment Bull. Chem. Soc. Ethiop. 2020, 34(3), 471-478. DOI: https://dx.doi. org/10.4314/bcse.v34i3. 4
Corporate Credit Risk Modelling in the Supervisory Stress Test of the Magyar Nemzeti Bank

As a regulatory and decision-supporting tool, the stress test framework plays an important role in assessing the vulnerability of the domestic financial system and the individual institutions. Consequently, continuous development of the models used in parameter estimation is of crucial importance. This study aims to improve credit risk loss estimation, which is one of the most important components of the supervisory stress test framework, by making the estimation of corporate default and transition probability more accurate. The study is based on a client-level default database, which contains various actors in the Hungarian banking sector and covers an entire economic cycle (2007–2017). It is unique as it introduces a uniform stage classification rule for determining the transition probabilities which attempts to create harmony with domestic institutions’ loan loss provision policies under IFRS 9. Based on the research findings, it can be concluded that – relying on a wideranging set of macroeconomic and client-level variables – it is possible to separate corporate debtors with adequate discriminatory power as well as to estimate point-in-time probability of default (PIT PD) and transition probabilities at the corporate level relevant in terms of the stress test, and thus to approximate the loan loss provisioning requirement arising in a stress situation. Of the factors capturing the cyclical nature of corporate default probability, the state of the labour market and the income position of the household sector were identified as the main determinants by the study.
Study of capacitor charge power supply with homopolar inductor alternator: System modelling and mode analysis

Capacitor charge power supply (CCPS) based on homopolar inductor alternator (HIA) has been successfully used in capacitor-based pulsed power supply (PPS), but there is still no perfect system modelling and compete system parameter design method. In this study, the system modelling and mode analysis of HIA-CCPS is developed in detail. First, a simpliﬁed CCPS model is proposed based on the voltage-behind-reactance (VBR) model of HIA and the phase base-value system (PBVS). Second, four different modes of CCPS are derived on conditions of the constant voltage load (CVL) assumption; the symbols and terms in these modes are uniﬁed. The equations derived in this study are the basis of the system parameter design and the further research of HIA-CCPS.
Job satisfaction and employees’ turnover in hotel industry: Evidence from Lagos state Nigeria

Studies that examined the link between facets of job satisfaction and employees’ turnover in respect of hotels in Lagos state are limited in literature. This study therefore aims to determine the correlation between five dimensions of job satisfaction and employees’ turnover in respect of hotels in Lagos state. The study adopted a survey design. Through on-site data collection, data were collected from 332 employees of 60 hotels in Ikeja, Lagos state. Partial Least Squares were adopted for the analysis and the result show that four of the five tested hypotheses were supported. The result further show that all the five dimensions of job satisfaction considered in this study put together have the tendency of influencing 43.2% of changes in employees’ turnover in hotels in Lagos State. By clarifying the connection between the facets of job satisfaction and employees’ turnover in Lagos State, this study offers an insight for effective management of employees’ turnover in hotel industry in an emerging economy. Hence, hotel owners and managers in Lagos State can minimize employees’ turnover by enforcing strategies and practices gear towards limiting job stress, enhancing promotion opportunities, supervisor’s support, and a friendly workplace environment. To the best of the authors’ knowledge, this study is the first to determine the connection between facets of job satisfaction and employees’ turnover in respect of hotels in Lagos State using Smart PLS_SEM approach. The study argued that employees’ retention in the hotel industry in Lagos State depends on the combination of the management of job stress, enhanced promotion opportunity for staff, suitable supervisor’s support, and provision of a friendly workplace environment.
Simulated Dust Transport in the Convective Boundary Layer

Soil dusts are an important source of aerosol in agricultural regions and can affect the Earth's radiation budget through the modification of cloud properties, and in particular, through their ability to act as ice nucleating particles. In order to impact cloud properties, agricultural soil dusts need to be transported from the point of emission to cloud‐relevant altitudes. Vertical transport within the planetary boundary layer is strongly controlled by turbulence and is challenging to represent accurately in regional and global models. Large‐eddy simulations (LES) are run at resolutions capable of resolving most of the turbulent energy directly and can thus better simulate vertical transport. In this study, we leverage the LES ARM Symbiotic Simulation and Observation (LASSO) large‐eddy simulations to simulate vertical transport of agricultural dust within the turbulent boundary layer using a modified version of the stochastic dispersion model FLEXPART‐WRF. We find that the modified model is better capable of simulating particle transport due to turbulence, and that particle size was the greatest factor in determining particle lifetime. Individual meteorology and particle density had intermediate effects upon particle transport, while release height had little effect upon simulation results. Finally, we utilize a quasi‐single column model (QSCM) approach to determine how our results compare to a parameterized treatment of turbulence. The QSCM simulations led to greater tracer transport out of the boundary layer, with ramifications for any studies utilizing a Lagrangian stochastic model to understand tracer dispersion. These results highlight the importance of accurately simulating turbulence for understanding particle transport.
The brief COPE: a factorial structure for incarcerated adults

ABSTRACT Research suggests that coping deficits play an important role in understanding offender behavior. The present study examines the use of the Brief COPE among a sample of 377 federally incarcerated Canada inmates. Using principal axis factor analysis, followed by confirmatory factor analysis, an eight factor structure was supported: (1) Support Seeking (α =.86); (2) Acceptance (α =.76); (3) Disengagement (α =.75); (4) Active Coping (α =.64); (5) Substance Use (α =.90); (6) Humor (α =.78); (7) Religion (α =.84); and (8) Self-Blame (α =.77). Factors were comprised of two to four items, with five that did not load onto any factor. Findings indicate that the Brief COPE constitutes a short, accessible, and validated measure of coping styles that is suitable for use with offender populations.
Genetic variability and correlation analysis for yield and yield attributing traits in mungbean [Vigna radiata (L). Wilczek]

Twenty mungbean ( Vigna radiata (L.) Wilczek) genotypes were evaluated for the estimation of genetic variability parameters, correlation coefficient, path analysis, heritability and genetic advance. The genotypes differed significantly for all the characters. Higher GCV and PCV was observed for the seed index. High heritability coupled with genetic advance as percent of mean showed by harvest index indicating the impact of additive gene expression. The characters days to number of seeds per pod and harvest index showed positive and significant correlation along with positive direct effect on grain yield. Therefore, selection based on this component traits would results improvement in grain yield of mungbean.
Historical migration and contemporary health

We argue that migration during the last 500 years induced differences in contemporary health outcomes. The theory behind our analysis builds on three physiological facts. First, vitamin D deficiency is directly associated with higher risk of all-cause mortality. Second, the ability of humans to synthesize vitamin D from sunlight (UV-R) declines with skin pigmentation. Third, skin pigmentation is the result of an evolutionary compromise between higher risk of vitamin D deficiency and lower risk of skin cancer. When individuals from high UV-R regions migrate to low UV-R regions, the risk of vitamin D deficiency rises markedly. We develop a measure that allows us to empirically explore the aggregate health consequences of such migration in a long historical perspective. We find that the potential risk of vitamin D deficiency induced by migration during the last half millennium is a robust predictor of present-day aggregate health indicators.
Impacts of the COVID-19 pandemic on employees’ work stress, well-being, mental health, organizational citizenship behavior, and employee-customer identification

ABSTRACT Despite the ongoing outbreak of the novel COVID-19, few studies have been conducted on the stress arising from the pandemic. In this study, attributes of epidemic concerns perceived by hotel employees were examined, and their impact on work stress, employee well-being, self-rated mental health, organizational citizenship behavior, and employee-customer identification were verified. We found and verified four attributes based on qualitative and quantitative approaches. As a result of the structural equation analysis, it was found that the relationships between the proposed variables had significant effects. This study provides important insights into the impact of epidemics on hotel employee performance through the attributes of perceived epidemic concerns.
On Optimal Favoritism in Asymmetric Competitions

Favoritism towards a relatively weaker competitor is widely adopted as an effective instrument to enhance productive effort provision in asymmetric competitions. In this paper, we investigate the effort-maximizing favoritism rule in asymmetric two-player contests with all-pay auction technology, while accommodating fully flexible (nonlinear) favoritism rules. We assume that the players’ competencies (measured by their values of winning the competition, or marginal effort costs) are public information. We find that at the optimum, the weaker player is extremely favored; however his/her winning chance converges to zero. This finding illustrates that the effort-maximizing extreme favoritism rule perversely decreases winner diversity.