Miracle-dz/UniFAR-FTUs huggingface dataset:
Ispring platform for learning Russian as a foreign language

ABSTRACT This study examined the efficiency of teaching Russian as a foreign language (L2) in two groups of students – the first benefited from the e-learning platform’s capabilities (experimental), and the second underwent a traditional in-class course. Students learning Russian as L2 at People’s Friendship University of Russia (Moscow, Russia) were enrolled in the experiment. The research sample comprised 75 individuals distributed to three experimental groups and 33 individuals allocated to three control groups. All data obtained as a result of the study were statistically analyzed. In order to study the overall effect of using the iSpring platform, the research outcomes were combined by Stouffer’s Z-score method. Together with this, at each examination stage, repeated analysis of variance (ANOVA) was conducted. Students’ progress in learning Russian was evaluated by way of pre- and post-testing. After the experiment finished, all respondents were surveyed to analyze their perception of the effectiveness, convenience, and satisfaction of the chosen learning mode. The study found that students from experimental groups spent significantly more time for learning, demonstrating better performance. It was remarked that iSpring’s adaptive learning features contribute to improving students’ performance by encouraging them to learn better and faster.
iSTEAM contest on enhancing self-confidence in making miniature models: correlate to mastery orientation, engagement and interest

ABSTRACT Background Students need to practice their hands-on skills when they are young to develop confidence for their future careers. Nowadays, iSTEAM (integrated science, technology, engineering, arts and mathematics) contests provide opportunities for participants to experience meaningful and challenging hands-on tasks that may foster learning, and to generate positive attitudes that may enhance their self-confidence in their ability to make miniature models. Purpose To understand the relations between mastery orientation of hands-on tasks, hands-on making interest, engagement, and self-confidence enhancement in an iSTEAM (integrated science, technology, engineering, arts and mathematics) contest. Sample The sample consisted of 212 junior high students including 131 males and 81 females who were preparing to join the iSTEAM contest. Design and Method Data were collected from 212 questionnaires and subjected to confirmatory factor analysis and structural equation modeling using AMOS 20. Results The results indicated that mastery orientation of hands-on tasks was positively related to hands-on making interest and engagement. Engagement was positively related to hands-on making interest, and hands-on making interest and engagement were positively related to self-confidence enhancement. Conclusions Students with high levels of mastery orientation might gain higher self-confidence, mediated by their interest and engagement in a science and technology hands-on making contest.
Pedagogy and pleasure: trans and gender transgressive students in an LGBTQ-themed literature class

ABSTRACT Schools are often hostile places for trans students, but I explore teaching and learning in a classroom that foregrounds LGBTQ people and in a school that actively strives to minimise cisnormativity. In this ethnographic teacher research project, I, a cisgender queer white woman, taught and studied an LGBTQ-themed Literature course at a U.S. grassroots charter school for the arts. I studied student work, interviews, and class discussions to learn about the experiences of three students– a trans man, a gender fluid/non-binary student, and a ‘feminine male. ’ Ifound that these students benefitted when space was made for them, trust was established with their teacher and classmates, they were treated with respect, they were provided texts that resonated with them, and they were given opportunities to bolster their self-confidence. Moreover, I found it was important to understand these students holistically, not solely in terms of gender, and to prioritise their pleasure.
Phenol and Parachlorophenol Removal Using Granular Activated Carbon

Abstract: The main goal of the present work is to remove phenol and parachlorophenol from synthetic solution using granular activated carbon (GAC). Two carbon types are used, the first is commercial supplied to Iraqi market by Spanish company (referred to as CGAC) and the second is manufactured using Iraqi waste material, referred to as MGAC. The experiments are performed according to batch and continuous mode (granular activated carbon adsorption column). The results show that both pollutants can be removed and the breakthrough and exhaustion times are proportional with the thickness of GAC and inversely proportional with the inlet pollutants concentration and surface over flow rate (SOR). The results also indicated that adsorption capacity is inversely proportional with SOR and it is directly proportional with the thickness of GAC column and pollutants concentration. MGAC gives better performance as compared with CGAC. In the present work, it is proved that adsorption capacity is a function of the operating conditions, carbon and adsorbent type and it is not pure carbon property. The results indicated also that Langmuir model fit the experimental data fairly.
COVID-Induced Spontaneous Pneumothoraxes: Case Series

Severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2) is a communicable disease leading to COVID-19 infection that resulted in worldwide flooding of medical centers with the shortage of ventilators in some areas. The respiratory system is the most affected by the novel virus. Clinical manifestations are diverse in severity, with the most common symptoms including fever, chills, cough, and shortness of breath. The contributing factor to the morbidity and mortality associated with this virus is the rapid clinical deterioration as a result of a heightened inflammatory response, requiring supplemental oxygen. Pneumothorax is an unusual complication that may further worsen the hypoxia and require immediate intervention. We present a case series of two patients with no risk factors for pneumothorax besides recent COVID-19 infection, who were found to have spontaneous pneumothoraxes.
Evaluation of Some Chemical Extractants for Determination of Available Zinc in Soil

Eleven chemical extraction procedures for the determination of avail. Zn in soil have been evaluated. NH4OAc (pH 4.6), EDTA-NH4OAc, DTPA and EDTA-(NH4)2CO3, showed very high degree of correlation with Zn uptake by maize and moong (Phaseolus aureus Roxb.). These extractants removed water soluble, exchangeable, complexed and portions of precipitated and occluded Zn. MgCl2 mainly extracted water soluble and exchangeable Zn. Strong acid extractants seemed to extract all the soil Zn fractions excepting those which are highly insoluble in soil. Effect of some soil characteristics on the extractibility of Zn by various extractants was also studied.
Factors Influencing Initiation and Discontinuation of Vitamin D Supplementation Among Infants

Background: To determine vitamin D supplementation frequency among infants, factors that influence adherence, and reasons for discontinuation of initiated vitamin D. Methods: This cross-sectional study was conducted using a questionnaire administered to the mothers via a face-to-face interview on 560 infants aged from 1 to 24 months admitted to outpatient clinics from June to December 2017. Results: A total of 351 infants were administered vitamin D, and the rate of supplementation in the first year of life was 83%, while it was only 28% between 13 and 24 months. The rate of vitamin D supplementation was higher among infants who were exclusively formula-fed (p<.05). When the data were analyzed using logistic regression analysis, only visit family physicians seems to be a statistically significant independent variable in increasing supplementation (p<.05). Compared with family refusal, the rate of discontinuation of vitamin D by the healthcare providers was higher after the first year of life (p<.05). The rates of vitamin D discontinuation by healthcare providers, especially by nurses who considered the duration of supplementation adequate, were statistically significantly higher when compared with the fontanel closure and other reasons (p<0.05). Conclusions: The rate of vitamin D supplementation was higher among families who visited family physicians, which suggests the importance of well-baby visits. Since vitamin D supplementation was less common among exclusively breastfed infants, mothers should be educated. Healthcare professionals need further education about the importance of vitamin D supplementation and indications for discontinuation.
A Game of Hide-and-Seek between Proprietary and Buy-Side Algorithmic Traders: Causal links with Market Quality

ABSTRACT This paper classifies Algorithmic Traders (ATs) as Proprietary Algorithmic Traders (PATs) and Buy-side Algorithmic Traders (BATs) and examines their dynamic relationship with market quality, using data from the National Stock Exchange (NSE), India. We find that the two categories of traders cause a differential impact on market quality measures and vice versa. BATs’ order placement improves liquidity by narrowing the quoted spread, while PATs’ and BATs’ cancellation worsens liquidity by widening the quoted spread. PATs’ order placement increases the price impact but reduces the realized spread, whereas their cancellation increases the realized spread. Furthermore, when the quoted spread increases, ATs increase their order placement and cancellation. When the realized spread increases, PATs cancel less of their orders. Contrarily, when the price impact increases, PATs’ participation (both order placement and cancellation) and BATs’ cancellation increase. Besides, we provide new evidence that among the ATs, order placement of BATs crowds out that of PATs, but not vice versa.
Body-Worn Cameras in Policing: Benefits and Costs

Body-worn cameras (BWCs) are an increasingly common tool for police oversight, accountability, and transparency, yet there remains uncertainty about their impacts on policing outcomes. This paper reviews what we know about the benefits of BWCs and how those benefits compare to the costs of this new technology. We make two contributions relative to existing research. First, we update prior meta-analyses of studies of the impacts of BWCs on policing outcomes to incorporate the most recent, and largest, studies carried out to date in this literature. This additional information provides additional support for the idea that cameras may affect a number of policing outcomes that are important from a social welfare perspective, particularly police use of force. Second, we carry out a benefit-cost analysis of BWCs, as financial barriers are often cited as a key impediment to adoption by police departments. Our baseline estimate for the benefit-cost ratio of BWCs is 4.95. Perhaps as much as one-quarter of the estimated benefits accrue to government budgets directly, which suggests the possibility that this technology could, from the narrow perspective of government budgets, even pay for itself. <br><br>Institutional subscribers to the NBER working paper series, and residents of developing countries may download this paper without additional charge at <a href="http://www.nber. org/papers/&#119;28622" TARGET="_blank">www.nber. org</a>. <br>
Non-binary young people and schools: pedagogical insights from a small-scale interview study

ABSTRACT While research is increasing into binary trans identities in educational settings, young people identifying as non-binary have been little studied. We explore the school experiences of eight non–binary teenagers aged 13–18. Our findings suggest that both the implicit and explicit curriculum are strongly binary, making it hard for non-binary young people to come out at school. Respondents had needed to educate themselves about gender identity and specifically about the possibility of non-binary identities, with little, if any, support from their schools. As non-binary identities were invisible at school, some did not feel safe there, and they came under pressure from both transphobic bullying and binary expectations of behaviour and self-presentation. Consequently, some respondents feared accessing any available provision for non-binary people, in case it outed them. Institutions should work harder to educate staff about non-binary identities, and non-binary young people should be involved in designing inclusive initiatives.
Automatic Music Genre Classification and Its Relation with Music Education

Because the classification saves time in the learning process and enables this process to take place more easily, its contribution to music learning cannot be denied. One of the most valid and effective methods in music classification is music genre classification. Given the rapid progress of music production in the world and the significant increase in the number of data, the process of classifying music genres has now become too complex to be done by humans. Considering the successful results of deep neural networks in this field, the aim is to develop a deep learning algorithm that can classify 10 different music genres. To reveal the efficiency of the model by comparing it with others, we make the classification using the GTZAN dataset, which was previously used in many studies and retains its validity. In this article, we use a convolutional neural network (CNN) to classify music genres, taking into account the previous successful results. Unlike previous studies in which CNN was used as a classifier, we represent music segments in the dataset by mel frequency cepstral coefficients (MFCC) instead of using visual features or representations. We obtain MFCCs by preprocessing the music pieces in the dataset, then train a CNN model with the acquired MFCCs and determine the success of the model with the testing data. As a result of this study, we develop a model that is successful in classifying music genres by using smaller data than previous studies.
Role of charge doping and strain in the stabilization of in-plane ferromagnetism in monolayer VSe2 at room temperature

We study the origin of in-plane ferromagnetism in monolayer VSe2 focusing on the effect of charge doping and mechanical strain. We start from an anisotropic spin Hamiltonian, estimate its parameters from density functional calculations, and determine the spectrum of spin-wave excitations. We show that 1T-VSe2 is characterized by relatively strong on-site Coulomb repulsion (U ≃ 5 eV), favoring an antiferromagnetic ground state, which contradicts experimental observations. We calculate the magnetic phase diagram as a function of charge doping and strain, and find a transition to the ferromagnetic state with in-plane easy axis under moderate hole doping (∼1014 cm−2). Analysis of spin-wave excitations in doped monolayer VSe2 reveals a gap due to the in-plane anisotropy, giving rise to long-range magnetic order well above 300 K, in agreement with recent experiments. Our findings suggest that experimentally available 1T-VSe2 monolayer samples might be intrinsically or extrinsically doped, which opens up the possibility for a controllable manipulation of their magnetic properties.
Effect of Envy and Altruism on Conspicuous Consumption Orientation: A Research in Kırıkkale

In this research, effect of envy on conspicuous consumption and moderating role of altruism was examined. Within the scope of the research, primary data were collected by convenience sampling method in the Kırıkkale province of Turkey. After performing confirmatory factor analyses, structural equation models were tested over the gathered data with the statistical package program IBM AMOS. According to the findings, the hypotheses of benign envy, malicious envy, and altruism being the possible factors affecting conspicuous consumption were supported. Besides, the moderating role of altruistic personality on the effect of malicious envy on conspicuous consumption has been determined. Finally, several suggestions were developed for firms and researchers based on interpreting the research findings.
Immune responses of broiler chicks supplemented with high levels of zinc.

The objective of this study was to evaluate if the high levels of zinc can improve different aspects of broilers' immune system. One hundred and forty-‎four 1-d old broiler chicks were used in the current study with three dietary zinc ‎(40, 120 and 200 mg/kg). At ‎2, 22, 32, 42 ‎days of age, the blood serums were tested for ‎antibody titer against‎ Newcastle disease vaccination‎, using ‎the standard Haemagglutination Inhibition test. On day 42 the sum of nitrite ‎and nitrate (based on the reduction of nitrate ‎to nitrite by cadmium) were measured and the weights of spleen and bursa of fabricius were recorded on a relative live‎ weight basis. ‎ At 42 d, antibody response of level 200 mg/kg diet was significantly higher than control. ‎Adding levels of 120 and 200 mg Zn/kg diet significantly increased the weight of bursa and ‎spleen respectively (P< 0.05) compared with the control. Also level of 200 mg Zn/kg diet showed the highest amount of nitrite ‎and nitrate in compare with other levels. The use of ‎200 mg Zn/kg diet in ‎broilers diet could be ‎considered as a natural promoter ‎of cell-mediated immunity. ‎
Nature of the Mantle Plume Under the Emeishan Large Igneous Province: Constraints From Olivine‐Hosted Melt Inclusions of the Lijiang Picrites

Olivine‐hosted melt inclusions have the potential to provide direct evidence about the nature of the mantle sources of magmas. In this study, we report the major and trace element and Sr–Nd–Pb–Hf isotope compositions of the Lijiang picrites from the Emeishan large igneous province, as well as major and trace element and Pb isotopic compositions of olivine‐hosted melt inclusions in the picrites. Using these data, we infer the nature of the mantle sources for the Lijiang high‐Ti picrites (Ti/Y = 645–654), and compare them with the Dali low‐Ti picrites (Ti/Y = 351–408). Lijiang melt inclusions have highly heterogeneous Pb isotope compositions (208Pb/206Pb = 2.015–2.201, 207Pb/206Pb = 0.812–0.882, 260 Ma age‐corrected) that overlap the majority of the fields from FOZO to enriched mantle 1 (EM1). The primitive mantle‐normalized trace element patterns of these melt inclusions reveal an enriched composition with depletions in Ba, Nb, Ta, Zr, and Hf. We suggest that an old recycled GLOSS II‐like sediment was probably the main component that imparted the EM1 signature into the sources of the Lijiang picrites. Furthermore, we reverse calculated the mantle potential temperature (Tp) beneath Lijiang and Dali using the Al‐in‐ol temperature. The estimated mantle Tp beneath Lijiang is lower than Dali. We infer that the Lijiang picrites might have originated from the mantle plume with lower thermal energy, corresponding to the waning stage of the axis of the Emeishan mantle plume. Our study suggest that high‐Ti magmas of the Emeishan large igneous province were derived from those parts or stages of the mantle plume with lower thermal energy.
Biological nitrification inhibition and forage productivity of Megathyrsus maximus in Colombian dry tropics

Agronomic, nutritional, and environmental aspects are integrated to promote sustainable tropical grassland production. Biological nitrification inhibition (BNI) is a plant-based strategy to improve nitrogen use efficiency by grasses in which they suppress the pace of soil nitrification via exudation of inhibitory compounds. To evaluate the effect of BNI on the productive performance of Megathyrsus maximus under field conditions, we evaluated a collection of 27 germplasm accessions and commercial cultivars of the forage grass in the dry tropics of Colombia. We measured plant yield dry matter, nutrition quality parameters, and nitrification rates of soil at 22 months after pasture establishment. Our results highlighted germplasm accessions of superior agronomic performance (for dry matter production and nutrition quality) and high capacity to decrease nitrification. Although no relation was observed between agronomic aspects, nutritional aspects, and nitrification rates, we conclude that there is no agronomic or nutritional penalty on environmentally friendly grasses, and BNI could be adopted as a target trait in plant breeding programs toward the development of eco-efficient forages and contribute to the sustainable intensification of livestock systems.
Robust Resource Allocation for Vehicular Communications With Imperfect CSI

The resource allocation in vehicle-to-everything (V2X) communications face a great challenge for satisfying the heterogeneous quality of service (QoS) requirements of the ultra-reliable safety-related services and the minimum throughput required entertainment services, due to the channel uncertainties caused by high mobility. In this paper, we first consider an optimistic scenario where the distribution of uncertain channel state information (CSI) can be deterministic and accurately known at the eNB. Then, a low-complexity resource allocation approach is developed, in which the probabilistic QoS constraint of V2V is transformed into a computable optimization constraint. To deal with the scenario with unknown uncertain CSI distribution, we develop a distributionally robust resource allocation approach for converting the intractable chance constraint of V2V into a deterministic semidefinite constraint based only on the first- and second-order moments of uncertain CSI. For alleviating the conservatism of above approach, a support-based distributionally robust resource allocation approach is developed to tighten the semidefinite constraint by utilizing the support information of uncertain CSI. Finally, we conduct simulations to show that the effectiveness of the proposed approaches outperforms other state-of-art approaches.
Study on the effect of maternal administration of oxaliplatin on offspring testes using unbiased design-based stereology

Oxaliplatin (Ox) is widely used for the treatment of various tumors. Since Ox prevents DNA replication and transcription, it may affect organs with rapid cell divisions such as the testes. Although its use during pregnancy has been reported, no information regarding its effects on the testes of the offspring is not available yet. Thirty-two mice were randomly divided into four groups. The control group (1) was administered intraperitoneally 0.2 ml of saline three times a week for the 21 days of pre-pregnancy, pregnancy and lactation. Experimental groups 2, 3 and 4 received 3 mg/kg of oxaliplatin three times a week for 21 days during pre-pregnancy, pregnancy and lactation, respectively. The left testis was removed from male offspring 30 and 60 days after birth. The volume of the testes, seminiferous tubules and interstitial tissue, the surface area and height of the seminiferous epithelium, as well as the length and diameter of seminiferous tubules, were analyzed by means of stereology. Results showed a decrease in the evaluated parameters in experimental groups, in comparison with the control group. Due to the ameliorating effect of Ox on offspring testes, cautiousness is needed during maternal administration in order to preserve the fertility of male offspring.
Robust MMSE Precoding and Power Allocation for Cell-Free Massive MIMO Systems

We consider the downlink of a cell-free massive multiple-input multiple-output (MIMO) system with single-antenna access points (APs) and single-antenna users. An iterative robust minimum mean-square error (RMMSE) precoder based on generalized loading is developed to mitigate interference in the presence of imperfect channel state information (CSI). An achievable rate analysis is carried out and optimal and uniform power allocation schemes are developed based on the signal-to-interference-plus-noise ratio. An analysis of the computational costs of the proposed RMMSE and existing schemes is also presented. Numerical results show the improvement provided by the proposed RMMSE precoder against linear minimum mean-square error, zero-forcing and conjugate beamforming precoders in the presence of imperfect CSI.