Miracle-dz/UniFAR-FTUs huggingface dataset:
Thermal stability of the deep ultraviolet emission from AlGaN/AlN Stranski-Krastanov quantum dots

We report on the structural and optical properties of AlGaN/AlN quantum dot (QD) superlattices synthesized by plasma-assisted molecular-beam epitaxy. Modifying the composition and geometry of the QDs, the peak emission wavelength can be shifted from 320 nm to 235 nm while keeping the internal quantum efficiency larger than 30%. The efficient carrier confinement is confirmed by the stability of the photoluminescence (PL) intensity and decay time, from low temperature up to 100 K. Above this threshold, the PL intensity decreases and the radiative lifetime increases due to carrier thermalization. We also identified the intraband electronic transition between the ground level of the conduction band and the first excited state confined along the growth axis (s-pz).
Challenges and Motivators to Organ Donation: A Qualitative Exploratory Study in Gujarat, India

Purpose Despite the global efforts to improve organ donation, there is a demand-supply gap for organs in India. The only solution to meet this disparity is to improve deceased donor transplants in the country through victims of road accidents. The government has instituted several initiatives to achieve this goal. However, challenges and barriers continue to affect the organ donation process. The present study aims to document the motivating factors and obstacles in the decision of families to donate organs in Ahmedabad, Gujarat and their suggestions to improve the processes involved in organ donation. Patients and Methods A qualitative exploratory study (in-depth interview) of ten relatives of deceased organ donors was conducted from Oct 2021 to Feb 2022. Interviews were audio recorded, and detailed notes were taken during the interview. Thematic analysis was done using ATLAS.ti version 8 software. Results The significant motivators identified were family members’ belief or conviction that it would help save the lives of others; a sense of moral obligation to do so as bodies of brain-dead persons can contribute to this noble goal, no use of the body after death, an extension of life, and being a role model for others. The challenges were mistrusting the organ donation process, fear of being responsible for any mishappening, and feeling of shock. The suggestions to improve organ donation included awareness creation, simplifying the legal process for accidental deaths, providing benefits to the donor family, and a system for identifying potential donors and their counselling. Conclusion The present study reflects the need for a more comprehensive awareness campaign to generate awareness and remove the misconception about organ donation in India. The findings of the study can be helpful for policymakers to amend the current organ donation process in India and improve the disequilibrium of demand and supply of deceased donations in India.
The commuting block maps problem

A block map is a map f: {0, l}' -* {0, 1) for some n > 1. A block map f induces an endomorphism f. of the full 2-shift (X, a). We define composition of block maps so that (f o g). = fo g. The commuting block maps problem (for f) is to determine C(f) = { glf o g = g of). We solve the commuting block maps problem for a number of classes of block maps. Introduction. Let (X, a) denote the shift dynamical system over {0, 1), also called the full 2-shift. Thus X is the set of bisequences of zeros and ones,
Comparison of cocycles of measured equivalence relations and lifting problems

Let ${\cal R}$ be an ergodic discrete equivalence relation on a Lebesgue space and $\alpha$ its cocycle with values in a locally compact group $G$. We say that an automorphism of ${\cal R}$ is compatible with $\alpha$ if it preserves the cohomology class of $\alpha$. We introduce a quasi-order relation on the set of all cocycles of ${\cal R}$ by means of comparison of the corresponding groups of all automorphisms being compatible with them. We find simple necessary and sufficient conditions under which two cocycles of a hyperfinite measure-preserving equivalence relation with values in compact (possibly different) groups are connected by this relation. Next, given an ergodic subrelation ${\cal S}$ of ${\cal R}$, we investigate the problem of extending ${\cal S}$-cocycles up to ${\cal R}$-cocycles and improve the recent results of Gabriel–Lemańczyk–Schmidt. As an application we study the problem of lifting of automorphisms of ${\cal R}$ up to automorphisms of the skew product ${\cal R}\times_\alpha G$, provide new short proofs of some known results and answer several questions from [ALV, ALMN].
Improving the special motor qualities of experienced female volleyball players living on the territory of martial law

Background and purpose. The training of athletes in conditions of limited freedoms (COVID-19 pandemic and martial law in the territory of residence) does not allow for the full training of athletes in team sports. The purpose of the study is to determine the organizational forms and means of training sessions aimed at improving special physical qualities under martial law. Material and methods. The study involved experienced volleyball players of one team (n=12). Volleyball players live in the territory of martial law (Kharkiv, Ukraine) and the restrictive measures of the COVID-19 pandemic. The experiment was carried out for 6 months in 2022 during martial law in Ukraine. The organization of the training was carried out with an emphasis on independent individual work. Pedagogical testing was carried out. 5 test exercises were used: each volleyball player performed independently. Volleyball players are offered an individual training plan that takes into account: safe living conditions (presence of special shelters – underground metro stations near the place of residence, special shelters, basements of houses, etc.); availability of electricity and means of communication (mobile, Internet); availability of means of life support (drinking water, food). Results. It was determined that the team is homogeneous only in the test exercise “long jump from a place”. The indicators of the other four tests indicate the heterogeneity of the group of volleyball players. The use of the ZOOM videoconference to monitor the performance of tests by volleyball players under martial law has been substantiated. Conclusions/ Exercises for the development of certain physical qualities of volleyball players are proposed. Also, schemes of remote self-training are proposed to level the heterogeneity of the group.
Intelligent Sitting Posture Classifier for Wheelchair Users

In recent years, there has been growing interest in postural monitoring while seated, thus preventing the appearance of ulcers and musculoskeletal problems in the long term. To date, postural control has been carried out by means of subjective questionnaires that do not provide continuous and quantitative information. For this reason, it is necessary to carry out a monitoring that allows to determine not only the postural status of wheelchair users, but also to infer the evolution or anomalies associated with a specific disease. Therefore, this paper proposes an intelligent classifier based on a multilayer neural network for the classification of sitting postures of wheelchair users. The posture database was generated based on data collected by a novel monitoring device composed of force resistive sensors. A training and hyperparameter selection methodology has been used based on the idea of using a stratified K-Fold in weight groups strategy. This allows the neural network to acquire a greater capacity for generalization, thus allowing, unlike other proposed models, to achieve higher success rates not only in familiar subjects but also in subjects with physical complexions outside the standard. In this way, the system can be used to support wheelchair users and healthcare professionals, helping them to automatically monitor their posture, regardless physical complexions.
Extraction of Black Hole Rotational Energy by a Magnetic Field and the Formation of Relativistic Jets

Using numerical simulations, we modeled the general relativistic magnetohydrodynamic behavior of a plasma flowing into a rapidly rotating black hole in a large-scale magnetic field. The results show that a torsional Alfvén wave is generated by the rotational dragging of space near the black hole. The wave transports energy along the magnetic field lines outward, causing the total energy of the plasma near the hole to decrease to negative values. When this negative energy plasma enters the horizon, the rotational energy of the black hole decreases. Through this process, the energy of the spinning black hole is extracted magnetically
Goeckerman Therapy of Psoriasis: Genotoxicity, Dietary Micronutrients, Homocysteine, and MTHFR Gene Polymorphisms

Goeckerman therapy (GT) of psoriasis vulgaris is based on the application of crude coal tar and ultraviolet radiation. We investigated DNA damage by the number of micronucleated binucleated cells (MNBC) in lymphocytes, serum homocysteine, vitamin B12, folic acid, and two polymorphisms (C677T and A1298C) in the MTHFR gene in 35 patients with exacerbated psoriasis vulgaris classified according to the psoriasis area and severity index (PASI) score and treated by GT. The median of PASI score decreased from nineteen to five, and MNBC increased from 10 to 18‰ after GT (p < 0.001 in both cases). Correlations of MNBC with homocysteine (Spearman’s rho = 0.420, p = 0.012) and vitamin B12 (rho = −0.389, p = 0.021) before the therapy were observed. Hyperhomocysteinemia was an independent predictor of genotoxicity (OR 9.91; 95% CI, 2.09–55.67; p = 0.003). Homocysteine was higher in females than in males (13 vs. 12 µmol/L, p = 0.045). In contrast, vitamin B12 levels in the females were lower than in the males (160 vs. 192 pmol/L, p = 0.047). Vitamin B12 in the females were negatively influenced by smoking status (160 pmol/L in smokers vs. 192 pmol/L in non-smokers, p = 0.025). A significantly higher MNBC was found in CC homozygous patients (A1298C polymorphism) than in AC heterozygotes (32 vs. 16‰, p = 0.005) and AA homozygotes (32 vs. 18‰, p = 0.036). Our data showed that homocysteine participates in the pathogenesis of psoriasis. Its serum levels correlated with MNBC and allowed the prediction of DNA damage to appear within GT. Both micronutrients status and homocysteine metabolic pathway contribute to the genotoxicity of GT.
A Multi-Level Analysis of Individual and Neighborhood Factors Associated with Patient Portal Use among Adult Emergency Department Patients with Multimorbidity

Background: Patient portals tethered to electronic health records (EHR) have become vital to patient engagement and better disease management, specifically among adults with multimorbidity. We determined individual and neighborhood factors associated with patient portal use (MyChart) among adult patients with multimorbidity seen in an Emergency Department (ED). Methods: This study adopted a cross-sectional study design and used a linked database of EHR from a single ED site to patients’ neighborhood characteristics (i.e., zip code level) from the American Community Survey. The study population included all adults (age > 18 years), with at least one visit to an ED and multimorbidity between 1 January 2019 to 31 December 2020 (N = 40,544). Patient and neighborhood characteristics were compared among patients with and without MyChart use. Random-intercept multi-level logistic regressions were used to analyze the associations of patient and neighborhood factors with MyChart use. Results: Only 19% (N = 7757) of adults with multimorbidity used the patient portal. In the fully adjusted multi-level model, at the patient level, having a primary care physician (AOR = 5.55, 95% CI 5.07–6.07, p < 0.001) and health insurance coverage (AOR = 2.41, 95% CI 2.23–2.61, p < 0.001) were associated with MyChart use. At the neighborhood level, 4.73% of the variation in MyChart use was due to differences in neighborhood factors. However, significant heterogeneity existed in patient portal use when neighborhood characteristics were included in the model. Conclusions: Among ED patients with multimorbidity, one in five adults used patient portals. Patient-level factors, such as having primary care physicians and insurance, may promote patient portal use.
Turbulence-induced vibrations prediction through use of an anisotropic pressure fluctuation model

In nuclear fuel rod bundles, turbulence-induced pressure fluctuations caused by an axial flow can create small but significant vibrations in the fuel rods, which in turn can cause structural effects such as material fatigue and fretting wear. Fluid-structure interaction simulations can be used to model these vibrations, but for affordable simulations based on the URANS approach, a model for the pressure fluctuations must be utilised. Driven by the goal to improve the current state-of-the-art pressure fluctuation model, AniPFM (Anisotropic Pressure Fluctuation Model) was developed. AniPFM can model velocity fluctuations based on anisotropic Reynolds stress tensors, with temporal correlation through the convection and decorrelation of turbulence. From these velocity fluctuations and the mean flow properties, the pressure fluctuations are calculated. The model was applied to several test cases and shows promising results in terms of reproducing qualitatively similar flow structures, as well as predicting the root-mean-squared pressure fluctuations. While further validation is being performed, the AniPFM has already demonstrated its potential for affordable simulations of turbulence-induced vibrations in industrial nuclear applications.
Aspects of characteristics of near‐fault ground motions of the 1999 chi‐chi (Taiwan) earthquake

Abstract In this work, we first study the peak ground accelerations (PGA), the peak ground velocities (PGV) and spectra of acceleration waveforms, based on a coordinate system defined on the focal plane of the earthquake, at nine near‐fault seismic stations along the fault trace. Results show that except for a station, near which there is a remarkable change of the fault trace, the near‐fault PGA value decreases and the PGV value increases from south to north along the fault. Although there exist variety and complexity in near‐fault acceleration spectra, some substantial conclusions can still be retrieved. The source and site effects are two major factors in controlling the variation in near‐fault acceleration spectra along the fault. The site effect acts mainly on the high‐frequency spectra, while the source effect on low‐frequency ones. For the three components, the value of the predominant frequency is, on the average, higher in the hanging wall than in the foot wall.
Density Estimation in the $L^\infty$ Norm for Dependent Data with Applications to the Gibbs Sampler

This paper investigates the density estimation problem in the LX norm for dependent data. It is shown that the iid optimal minimax rates are also optimal for smooth classes of stationary sequences satisfying certain ,8-mixing (or absolutely regular) conditions. Moreover, for given 3-mixing coefficients, bounds on uniform convergence rates of kernel estimators are computed in terms of the mixing coefficients. The rates and the bounds obtained are not only for estimating the density but also for its derivatives. The results are then applied to give uniform convergence rates in problems associated with the Gibbs sampler.
Fume formation rate at globular to spray mode transition during welding

The decrease in the fume formation rate at the transition from globular to spray mode during welding has been investigated. A physical model describing this phenomenon has been developed. The essence of the consideration is that the model takes into account the different heating of droplets of the liquid metal by the are plasma in the two welding modes. New experimental results have been obtained for welding of stainless steel in a shielding gas containing oxygen. The decrease of the fume formation rate estimated on the basis of the model is in agreement with experimental data obtained and in the literature.
Standing on the Shoulders of Goffman: Advancing a Relational Research Agenda on Stigma

Drawing from Goffman’s original observations on stigma and the consequences of interactions between the stigmatized and supportive or stigmatizing audiences, we conduct a 20-year review of the diverse literature on stigma to revisit the collective nature of stigmatization processes. We find that studies on stigma’s origins, responses, processes, and outcomes have diverged from Goffman’s relational view of stigma as they have overlooked important relational mechanisms explaining the processes of (de)stigmatization. We draw from those conclusions to justify the need to study stigma as a collective phenomenon. We develop a relational perspective on stigma based on understanding how attributes are stigmatized (or not) by audiences in their interactions. We argue that to advance stigma research, it is necessary to build on Goffman’s theory to include the stigmatizers (i.e., the normal) and supporters (i.e., the wise); how they create, sustain, or remove stigma; and how they relate to the stigmatized (i.e., the targets). Accordingly, we provide a research agenda on stigma as a collective phenomenon that theorizes a relational perspective, proposes a typology of how audiences relate to stigmatization, and identifies patterns of relations between audiences. We thus offer a missing piece to existing accounts of stigma by focusing on the key role of audiences (i.e., stigmatizers or supporters of the stigmatized) rather than on the targets of stigma (i.e., the own).
An analysis of the possibilities and challenges of long stay tourism in Thailand

The tourism sector is significant in emerging nations like Thailand. The cost of lodging is a significant component of practically every trip, thus it is important to consider accommodation development while trying to draw in visitors from other nations. The long-stay tourism industry is crucial since longer visitor stays result in more revenue. Following this, other research on long-term lodging of all forms has been conducted, with an emphasis on both the tourist and real estate sectors. The best tourist option in Thailand is long-term travel. As evidenced by the American, European, and Japanese visitors, the target market is tourists from nations with high costs of living, frigid climates, and aging populations. Therefore, it is anticipated that the tourist demographic will change in future, leading to the emergence of the retirement home niche market as a part of long-stay tourism. The characteristics of long-stay tourism in Thailand are examined in this paper, and we assess the theoretical and conceptual framework as an analysis of Thailand's tourism. Examining the current situation of the Thai long-stay tourist business is the initial and main objective of this study. There is currently no perfect answer, but various alternatives from comparable markets in representative nations have been used as examples to subsequently create tourism accommodation in Thailand for long-stay tourism.
A VCO-ADC Linearized by a Capacitive Frequency-to-Current Converter

In this brief we propose a technique to compensate the distortion of an open-loop VCO-based ADC. The VCO is linearized by placing an analog feedback loop based on a frequency-to-current converter which uses an asynchronous switched capacitor circuit. The feedback loop relies on the VCO gain to linearize the ADC without requiring additional amplifiers. This permits the use of a ring oscillator with small input range to efficiently encode a large signal. The proposed technique has been experimentally demonstrated in an audio ADC. The proof-of-concept chip was fabricated in 130nm CMOS and achieves 76.64 dBA of peak SNDR with a Dynamic Range of 90dB and a power consumption of 482 $\mu \text{W}$ in 20kHz.
CBITS: Crypto BERT Incorporated Trading System

Most textual analysis-based trading approaches in cryptocurrency (crypto) involve lexical, rule-based methods for extracting news sentiments. Furthermore, language models (LMs) are not always suitable for the crypto domain due to jargon that is not covered in general-purpose texts. This study answers the question of “Is it possible that the LMs can profit by effectively applying the sentiment score of the natural language processing task with chart score in the BTC trading system? ” by focusing on the effectiveness of both scores, which significantly affect the profit of the trading system. We introduce CBITS: Cryptocurrency BERT Incorporated Trading System based on pre-trained LMs for Korean crypto sentiment analysis to aid Bitcoin (BTC) trading models. We pre-trained crypto-specific LMs, which are transformer encoder-based architectures. Along with our pre-trained LMs, we also present our custom fine-tuning dataset used to train our LMs on the BTC sentiment classifier and show that using sentiment scores along with BTC chart data boosts the performance of BTC trading models and also allows us to create a market-neutral trading strategy.
A framework for sequential multiblock component methods

Multiblock or multiset methods are starting to be used in chemistry and biology to study complex data sets. In chemometrics, sequential multiblock methods are popular; that is, methods that calculate one component at a time and use deflation for finding the next component. In this paper a framework is provided for sequential multiblock methods, including hierarchical PCA (HPCA; two versions), consensus PCA (CPCA; two versions) and generalized PCA (GPCA). Properties of the methods are derived and characteristics of the methods are discussed. All this is illustrated with a real five‐block example from chromatography. The only methods with clear optimization criteria are GPCA and one version of CPCA. Of these, GPCA is shown to give inferior results compared with CPCA. Copyright © 2003 John Wiley & Sons, Ltd.
Interrelationships between Dietary Outcomes, Readmission Rates and Length of Stay in Hospitalised Oncology Patients: A Scoping Review

Background: Poor food intake is an independent risk factor for malnutrition in oncology patients, and achieving adequate nutrition is essential for optimal clinical and health outcomes. This review investigated the interrelationships between dietary intakes, hospital readmissions and length of stay in hospitalised adult oncology patients. Methodology: Three databases, MEDLINE, Web of Science and PubMed were searched for relevant publications from January 2000 to the end of August 2022. Results: Eleven studies investigating the effects of dietary intakes on length of stay (LOS) and hospital readmissions in cohorts of hospitalised patients that included oncology patients were identified. Heterogenous study design, nutritional interventions and study populations limited comparisons; however, a meta-analysis of two randomised controlled trials comparing dietary interventions in mixed patient cohorts including oncology patients showed no effect on LOS: mean difference −0.08 (95% confidence interval −0.64–0.49) days (p = 0.79). Conclusions: Despite research showing the benefits of nutritional intake during hospitalisation, evidence is emerging that the relationship between intakes, LOS and hospital readmissions may be confounded by nutritional status and cancer diagnosis.