Miracle-dz/UniFAR-FTUs huggingface dataset:
Effects of Deliberate Practice on Blended Learning Sustainability: A Community of Inquiry Perspective

Education for sustainable development has been regarded as a lifelong learning process and an integral part of quality education. To this end, this study aims to examine the implementation of online learning communities and deliberate practice in a blended learning context, to improve English as a foreign language (EFL) students’ learning performance and engagement. Specifically, in addition to the traditional offline courses, the online film clip watching and writing tasks were adopted to ascertain the role of deliberate practice and the dimensions of the community of inquiry (COI) framework were adopted to examine the perceived effectiveness and improved performance. A quantitative study was carried out, involving 67 undergraduate freshman English course students from one university at northeastern Taiwan. The findings of this study indicate that there is statistically significant correlation between the three dimensions of community of inquiry, perceived learning and learning engagement. Moreover, teaching and cognitive presence are more predictive of students’ perceived learning. Finally, this study also illustrates practical implications, to facilitate students’ learning for sustainable development competency in blended learning contexts.
Efficiency and Aerodynamic Performance of Bristled Insect Wings Depending on Reynolds Number in Flapping Flight

Insect wings are generally constructed from veins and solid membranes. However, in the case of the smallest flying insects, the wing membrane is often replaced by hair-like bristles. In contrast to large insects, it is possible for both bristled and membranous wings to be simultaneously present in small insect species. There is therefore a continuing debate about the advantages and disadvantages of bristled wings for flight. In this study, we experimentally tested bristled robotic wing models on their ability to generate vertical forces and scored aerodynamic efficiency at Reynolds numbers that are typical for flight in miniature insects. The tested wings ranged from a solid membrane to a few bristles. A generic lift-based wing kinematic pattern moved the wings around their root. The results show that the lift coefficients, power coefficients and Froude efficiency decreased with increasing bristle spacing. Skin friction significantly attenuates lift production, which may even result in negative coefficients at elevated bristle spacing and low Reynolds numbers. The experimental data confirm previous findings from numerical simulations. These had suggested that for small insects, flying with bristled instead of membranous wings involved less change in energetic costs than for large insects. In sum, our findings highlight the aerodynamic changes associated with bristled wing designs and are thus significant for assessing the biological fitness and dispersal of flying insects.
Reconstruction of the Grenfell tower fire—Part 6—Numerical simulation of the Grenfell tower disaster: Contribution to the understanding of the tenability conditions inside the common areas of the tower

The recent dramatic events at Grenfell Tower in London involving a combustible façade system have raised concerns regarding the fire risk that these systems pose. The spread of fire over the façade of the Tower was previously modelled numerically and the results of this modelling were validated by comparison with observations of the real fire. This model was used to determine the fire behaviour of the façade and the propagation of the façade fire into the apartments through windows. The modelling used an impact model according to ISO 13571 and included fire loads from the façade and, when relevant, from apartment contents. Tenability levels inside the apartments were quantified by an analysis of the toxic and thermal conditions due to the combustion of the façade materials and the apartment contents. In the present paper, the conditions inside the lobbies and stairs of the Tower are investigated, building on the previous analysis of the apartments. This allows an understanding of the evolution of toxic and thermal conditions whilst the fire spread, and their impact on egress during the fire event.
The operation and maintenance governance of microservices architecture systems: A systematic literature review

Due to its development agility, continuous delivery, scalability and other characteristics, the microservice architecture systems (MASs) have provided complex business functions to hundreds of millions of users in many application fields. The operation and maintenance governance for a large number of microservices with complex relationships is crucial to ensuring the stability and reliability of an MAS. Although this research field has received certain attention and produced some innovative results, there is a lack of systematic reviews covering the different aspects of it. In this context, the central objective of this study is to carry out a systematic literature review (SLR) in this field, in an attempt to review existing issues, discuss the main trends, and share the findings with the academia. As a result, we start from more than 500 scientific papers published from 2009 to 2021 and extract 144 most significant papers, identify that the main research directions of this field include load balancing, fault detection, and autoscaling. Subsequently, we provide a comprehensive description of these research directions, discuss them in particular detail. We also determine limitations of current work and discuss new directions worth exploring in the future. Consequently, the outcomes will assist professionals and experts in the industry as well as academic researchers to focus more on operation and maintenance governance of MASs and further improve the relevant methods and theoretical systems in this field.
Ractopamine supplementation in the diet of pintado amazônico during the final growth phase

: The objective of this unprecedented research was to evaluate performance traits, carcass yield, meat quality, and hematological parameters of pintado amazônico fi sh ( Pseudoplatystoma reticulatum × Leiarius marmoratus ) fed diets containing ractopamine (20 mg kg –1 ) for different periods, during the fi nal growth phase. The following treatments were evaluated: 45 days without ractopamine supplementation (control diet); 30 days of control diet, followed by 15 days of ractopamine supplementation; 15 days of control diet, followed by 30 days of ractopamine supplementation; and 45 days of ractopamine supplementation. Performance traits, carcass yield and hematological parameters were not signifi cantly infl uenced by the ractopamine supplementation periods. The pH, L* color and a* color parameters of the fi let post-slaughter and the L* color of the fi let post-thawing were signifi cantly infl uenced by the period of supplementation with the additive in the diet. Cooking loss was signifi cantly lower in the fi llet of fi sh that received ractopamine. Ractopamine supplementation at the level of 20 mg kg –1 in the diet of pintado amazônico for 15, 30, or 45 days does not alter their production performance, carcass yield, or hematological parameters, but changes the qualitative traits of their fi let.
Integrated Membrane Process Coupled with Metal Sulfide Precipitation to Recover Zinc and Cyanide

In gold cyanidation plants, which include a zinc cementation process, there is a progressive increase in zinc content in the solution and a higher cyanide concentration in leaching tailings. Consequently, there are opportunities to: (i) recover zinc and cyanide from these solutions, (ii) generate a saleable ZnS by-product, and (iii) reduce cyanide consumption and cyanide concentration in leaching tailings. Previous studies have proposed the use of the SART (Sulfidization, Acidification, Recycling, and Thickening) process for this purpose; however, this process has disadvantages that must be addressed. This study presents the results of the experimental assessment of an alternative process, the SuCy process, which uses an integrated membrane process. The SuCy process is composed of a metal sulfide precipitation coupled with a membrane filtration stage, a membrane contactor step to recover and concentrate cyanide, and a final neutralization and ultrafiltration stage. The flux obtained for zinc sulfide separation was around 0.01 L/m2s, with cyanide recovery of 95% at 60 min, whereas flux for ultrafiltration was 0.22 L/m2s. A comparison with an experimental study of the SART process at laboratory scale showed that the SuCy process could obtain a higher zinc recovery and can reduce the solid–liquid separation equipment by around five times. Therefore, the SuCy process could be a promising alternative for zinc and cyanide recovery in gold cyanidation.
Inhaled corticosteroids and COVID-19 outcomes in asthma: the Israeli experience

Inhaled corticosteroids (ICS), alone or in combination with bronchodilators, are widely used in asthma [1]. ICS have potential immunosuppressive effects that may promote viral replication, delayed viral clearance and increased risks of secondary infections [2, 3]. Furthermore, ICS use in asthma is associated with an increased risk of upper respiratory tract infections [2, 3]. Therefore, in the face of the current coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, concerns have been raised whether the use of ICS in asthmatic patients increases the risk of SARS CoV-2 infection and affects COVID-19 severity and mortality. The use of ICS is safe and people living with #asthma should continue to take their prescribed medication as usual during the #COVID19 pandemic https://bit.ly/3rOYIL2
Remarkable virus diversity and organized community in filter-feeding oysters varied from those of the ocean virome

Background:Viruses play critical roles in the marine environment because of their interactions with an extremely broad range of potential hosts. Many studies of viruses in seawater have been published, but viruses that inhabit marine animals have been largely neglected. Oysters are keystone species in coastal ecosystems, but as filter-feeding bivalves with very large roosting numbers and species co-habitation, it is not clear what role they play in marine virus transmission and coastal microbiome regulation.Results:Here we report a Dataset of Oyster Virome (DOV) that contains 728,784 nonredundant viral operational taxonomic unit (vOTU) (≥800 bp) contigs and 3,473 high-quality viral genomes, enabling the first comprehensive overview of both DNA and RNA viral communities in oysters (Crassostrea hongkongensis). We discovered tremendous diversity among novel viruses that inhabit oysters using multiple approaches, including reads recruitment, vOTUs, and high-quality virus genomes. Our results show that these viruses are very different from viruses in the oceans or other habitats. In particular, the high diversity of novel circoviruses that we found in oysters indicates that oysters may be potential hotspots for circoviruses. Notably, the viruses that were enriched in oysters are not random but are well organized communities that can respond to changes in the health state of the host and the external environment at both compositional and functional levels.Conclusions:In this study, we generated a first knowledge landscape of the oyster virome, which has increased the number of known oyster-related viruses by tens of thousands of times. Our results suggest that oysters provide a unique habitat that is different from that of seawater, and highlight the importance of filter-feeding bivalves for marine virus exploration as well as their essential but still invisible roles in regulating marine ecosystems.
Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths

Animals vary widely in body size across and within species. This has consequences in large and small individuals for the function of organs and body parts. How these scale in relation to body size reveals evolutionary investment strategies, often resulting in trade-offs between functions. Eyes exemplify these trade-offs, as they are limited by their absolute size in two key performance features: sensitivity and spatial acuity. Previous studies of the 3D structure of apposition compound eyes, which are ideal models for allometric studies due to their size polymorphism, revealed that allometric scaling improves both local resolution and visual sensitivity in larger bumblebees (Taylor et al., 2019). Here, we build on the established methods and results to investigate allometric scaling in superposition compound eyes – the second prominent eye type in insects – for the first time. Our research highlights a surprising strategy to cope with the challenge of trading off sensitivity and spatial resolution in small eyes, as we show that the eyes of the hummingbird hawkmoth retain an optimal balance of these performance measures across all body sizes.
Evaluation of the Effect of Heat Input and Cooling Rate of Rail Flash-Butt Welding using Finite Element Method Simulation

Abstract Simulations using the finite element method (FEM) were done to understand the effects of heating/cooling rates on the distribution of residual stresses. Two material parameters from rails were used while the boundary conditions remained constant: heat-affected zone size, maximum temperature and heating extraction rate. To complement the analysis, a flash-butt weld of a Premium rail was done with welding parameters adjusted to obtain a narrow HAZ, without forced cooling, to examine the microstructure formed in the critical regions in the web and the edge of the rail foot. The results showed that there was a concentration of vertical residual stresses in the web region, while the presence of horizontal compression residual stresses was mostly superficial in the rail head region. The main result from the simulation sets was that when using two simulation parameters with similar materials (rails) substantially different results were obtained. Metallographic examinations showed that there was no presence of acicular microconstituents (martensite/bainite). In the rail web, proeutectoid ferrite was observed in the central region, cementite in a previous austenitic grain boundary, in the region that reached temperatures close to AC3, and almost complete spheroidization in the region of maximum spheroidization. In contrast, in the rail foot edge region, there was a completely pearlitic microstructure, in the central region and in the zone that reached temperatures close to AC3, and a lower volume of spheroidization in the region where maximum spheroidization is typically observed, probably due to the higher cooling rate in this region.
Factors Affecting the Intraluminal Therapy for Helicobacter pylori Infection

Helicobacter pylori (H. pylori) can be eradicated immediately while conducting an endoscopic examination. The eradication rate of intraluminal therapy for H. pylori infection (ILTHPI) is 53.7% (51/95) via local application of single-dose medicament containing amoxicillin, metronidazole, and clarithromycin. We aimed to evaluate factors affecting ILTHPI and to assess the efficacy among single antibiotics, and compared our results with combined antibiotics. We enrolled H. pylori-infected treatment-naïve symptomatic patients; 95 completed triple-antibiotic ILTHPI were evaluated for risk factors, along with 60 completed mono-antibiotic ILTHPI containing amoxicillin, clarithromycin, or metronidazole in each of the 20 patients. Univariate analysis revealed the significant influence of BMI (OR: 1.15; 95% CI: 1.03–1.27, p = 0.011) and gastric juice pH (OR: 1.35; 95% CI: 1.16–1.58, p = 0.0001). Logistic regression analysis also showed significant influence of gastric juice pH (OR: 1.30; 95% CI: 1.10–1.54, p = 0.002). The eradication rate of mono-antibiotic ILTHPI is significantly lower than triple-antibiotic ILTHPI (11.7% vs. 53.7%; p < 0.0001; α = 0.05, power = 1.0). The efficacy was 20% (4/20) for metronidazole, 10% (2/20) for amoxicillin, and 5% (1/20) for clarithromycin. In conclusion, the level of gastric juice pH is a crucial factor affecting the ILTHPI. The detection of gastric juice pH and selection of optimal intraluminal medicaments are important. Further studies with combined antibiotics for ILTHPI, perhaps metronidazole-containing medicaments, are recommended.
Use of Digital Finance Platforms for Personal Finance Management in Rural China: Antecedents and Consequences

This study examined the antecedents and consequences of the use of digital finance platforms to manage personal finance of rural people in China. The conceptual framework of the study was developed from the integration of Unified Theory of Acceptance and Use of Technology, DeLone and McLean Model of Information Systems Success, and perceived risk. This study employed a quantitative approach using a questionnaire survey. A total of 403 valid responses were collected using a multi-stage sampling design. Data were analyzed using the Partial Least Squares Structural Equation Modeling technique with the R plspm package. The study revealed that performance expectancy, effort expectancy, facilitating conditions, and perceived risk significantly influence the use of digital finance platforms among rural people in China, which then lead to user satisfaction and net benefits. The research contributed to technology adoption literature in the context of rural people. For practice, the research findings were important to the development of a solid digital finance ecosystem.
Novel Arc-suppression Coil Based on the Theory of Transformer with Controllable Load

By introducing the current development and problems of arc-suppression coils, a novel automatic tuning arc-suppression coil based on the theory of transformer with controllable current source load is proposed, which has the properties of linear reactance tuning capacity and little harmonics pollution. Its principle is that the equivalent reactance of the transformer's primary winding can be regulated by controlling the current of the transformer's secondary winding, which can be implemented via a voltage source PWM inverter. Moreover, a large capacity apparatus can be realized with the multiple secondary windings structure adopted. The paper analyzes the principle of this new approach and presents the whole control system. The experimental results of an 800 kVA pilot apparatus have proved the validity of the theory as well as the feasibility of the scheme proposed.
Clinicopathologic Analysis of Sinonasal Inverted Papilloma, with Focus on Human Papillomavirus Infection Status

Sinonasal inverted papilloma (SNIP) can recur; however, the factors related to tumor recurrence remain unclear. This study aimed to analyze risk factors, including human papillomavirus (HPV) infection, as well as other factors associated with SNIP recurrence. Thirty-two patients who were diagnosed with SNIP and underwent surgery between 2010 and 2019 were enrolled: 24 men and 8 women, with a mean age of 59.2 years. The mean follow-up was 57.3 months. Demographics and information about history of smoking, diabetes mellitus (DM), hypertension, allergic rhinitis, alcohol consumption, tumor stage, surgical approach, and recurrence were reviewed retrospectively. Specimens were investigated using polymerase chain reaction to detect HPV DNA (high-risk subtypes: 16, 18, 31, 33, 35, 52b, and 58; low-risk subtypes: 6 and 11). Seven patients (21.9%) experienced recurrence. HPV DNA was detected in five (15.6%) patients (high-risk subtypes, n = 2; low-risk subtypes, n = 3). Patients with recurrence of SNIP had a higher proportion of young adults and displayed higher rates of HPV infection, DM, and advanced tumor stage than those without recurrence. HPV infection, young adulthood, DM, and advanced tumor stage could be associated with a high recurrence rate, which suggests that patients with these risk factors could require close follow-up after surgery.
Introduction

Background: Postpartum hemorrhage is still the leading cause of death of birthing mothers in the world today. Pronurturance plus evidence-based practice which includes early skin-to-skin contact and breastfeeding has a significant positive effect to improve the labor outcomes and decrease the occurrence of postpartum hemorrhage. Aim: was to study the effect of pronurturance plus on labor outcomes of women at risk to postpartum hemorrhage. A Quasi-experimental research study carried out at the Delivery Room and Postpartum Department in one of the Hospital that affiliated to the Ministry of Health, Fayoum, Egypt. Sample: A purposive sample of 90 laboring women at risk for postpartum hemorrhage was divided into the study and control groups (45 for each). The control group received routine hospital care and the study group received the pronurturance plus practice. Seven women were excluded from the study group due to that some babies failed to initiate breastfeeding after delivery and some mothers didn‟t complete the duration of skin to skin contact. Finally, the sample size reached 45 & 38 women in the control and study groups respectively. Four tools were used: 1) Laboring women‟s‟ demographic data assessment tool,2)Risk factors‟ to postpartum hemorrhage assessment tool 3) Labor outcomes assessment tool, and 4) Women‟s‟ satisfaction assessment tool. The results: There were statistically significant differences between the study and the control groups with regard to the labor outcomes in third and fourth stage of labor. The study group exhibited less duration of 3 rd stage of labor, efficient uterine contraction, less amount of blood loss, less occurrence of primary postpartum hemorrhage, and high satisfaction level regarding to the apply of pronurturance plus. Conclusion: The pronurturance plus practice had a positive effect in improving labor outcomes and reducing the occurrence of primary postpartum hemorrhage among women at risk to postpartum hemorrhage. Recommendations: The practice of pronurturance plus should be a part of routine 3 rd and 4 th stage care for all birthing women regardless of their level of risk.
LONG-TERM DRIVERS OF INTEREST RATE DYNAMICS IN BRAZIL

Bouchardet Cordeiro, Arthur; Viana de Carvalho, Carlos (Advisor); Zilberman, Eduardo (Co-Advisor). Long-Term Drivers of Interest Rate Dynamics in Brazil. Rio de Janeiro, 2021. 52p. Dissertação de Mestrado – Departamento de Economia, Pontifícia Universidade Católica do Rio de Janeiro. I develop a life cycle model to evaluate the relative importance of several long-term drivers of real interest rates. The model is a generalization of Gertler (1999), including credit market imperfections and heterogeneity among workers to fully capture the effects of the demographic transition. I calibrate the model to the Brazilian economy, feeding it with profiles for government spending, public debt, productivity growth and demographic variables. The model explains 71% of the overall change in real interest rates in Brazil between 2000 and 2019. Demographic factors, especially increases in life expectancy, are the key drivers of the fall in real interest rates. These forces are partially compensated by increases in public debt and social security spending. Moreover, the framework suggests that real interest rates will keep falling over the next 20, reaching a level of 1.5% despite reasonable increases in government debt. However, possible effects of risk premia and global rates on domestic interest rates are absent from the analysis.