Miracle-dz/UniFAR-FTUs huggingface dataset:
Avaliação das tele-aulas em tempo de covid-19 pelos encarregados de educação de Luanda

Este artigo estuda a implementação das tele-aulas em Angola, como uma das principais acções e medidas de política adoptadas pelo sector da educação em resposta à suspensão das actividades lectivas presenciais no país. O estudo tem como objectivo reflectir sobre os resultados da avaliação das tele-aulas feita pelos encarregados de educação da província de Luanda durante o período de Estado de Emergência. Trata-se de um estudo exploratório, cuja sustentação teórica é feita com suporte aos estudos de Souza & Aguiar (2020) e Bahia (2020), articulados com a análise de relatórios do Ministério da Educação (2019; 2020), do Instituto Nacional de Estatística (2016; 2017), de alguns referentes bibliográficos internacionais, com particular realce para as recomendações da UNESCO (2020), OCDE (2020), Organização Mundial da Saúde (2020), estudos da EdTechHub & Elearning Africa (2020) e da Save the Children International (2020). Para compreender a avaliação das tele-aulas realizou-se um inquérito por questionário online aplicado a cento e dezassete (117) encarregados de educação durante o mês de Abril do ano 2020. O estudo concluiu que a produção das tele-aulas foi uma boa alternativa à suspensão das aulas presenciais, apesar de 23,1% das crianças não as terem acompanhado por desatenção e falta de acompanhamento dos encarregados de educação, constantes de cortes de energia eléctrica e da sua falta em algumas zonas, associado à falta de sinal de televisão, bem como a não posse de aparelho de televisão da parte de alguns agregados familiares pela débil situação socioeconómica que os caracterizam.
Towards a knowledge base of medieval and renaissance geographical Latin works: The IMAGO ontology

In this article we present the first achievement of the Index Medii Aevi Geographiae Operum (IMAGO)—Italian National Research Project (2020–23), that is, the ontology we have created in order to formally represent the knowledge about the geographical works written in Middle Ages and Renaissance (6th–15th centuries). The IMAGO ontology is derived from a strict collaboration between the Institute of Information Science and Technologies (ISTI) of the Italian National Research Council (CNR) and the scholars who are involved in the project, who have supported ISTI-CNR in defining a conceptualization of the domain of knowledge. Following the re-use logic, we have selected as reference ontologies the International Committee on Documentation CRM vocabulary and its extension FRBRoo, including its in-progress reformulation, LRMoo. This research is included in a wider project context whose final aim is the creation of a knowledge base (KB) of Latin geographic literature of the Middle Ages and Renaissance Humanism in which the data are formally represented following the Linked Open Data paradigm and using the Semantic Web languages. At the end of the project, this KB will be accessed through a Web application that allows retrieving and consulting the collected data in a user-friendly way for scholars and general users, e.g. tables, maps, CSV files.
Thermal and mechanical properties of polycrystalline U3Si2 synthesized by spark plasma sintering

ABSTRACT U3Si2 has been explored as an alternative nuclear fuel material for increased accident tolerance. However, scatter has been reported in the thermal properties possibly because of the pores and impurities within the samples. In the present study, we prepared a polycrystalline U3Si2 bulk sample with high density and without impurity, and evaluated its thermal and mechanical properties. The sample was synthesized by arc melting and spark plasma sintering, followed by annealing. The density of the U3Si2 pellet was 96% of the theoretical density. The heat capacity was measured and compared with the calculation data. In addition, the measured data were used to evaluate thermal conductivity of U3Si2. The measurement data of elastic properties were compared with the theoretical calculation and agreed well. A high thermal conductivity and hardness compare to UO2make it favorable to anticipated as alternative nuclear fuel.
Policy in Practice: Social Procurement Policies in the Swedish Construction Sector

Procurement has long been used to fulfil policy goals, and social procurement policies can mitigate issues connected to social exclusion, unemployment and segregation. The target groups for such policies are disadvantaged people such as immigrants, young people and people with disabilities. Due to its close connection to exclusion and segregation issues, the construction and real estate sector has often been seen by policymakers as an appropriate sector for social procurement. However, practices to implement such policies are underdeveloped, which creates uncertainty and hinders the transition towards sustainability in the construction sector. This paper investigates how construction clients and contractors perceive the implementation of social procurement policies in practice. Drawing on policy-in-practice literature and interviewing 28 actors in the Swedish construction sector, the findings show a misalignment between: (1) social procurement policies, (2) the sector and its existing practices, and (3) the target group and their skills and needs. Although this misalignment adversely impacts policy implementation and practice formation, it can likely be mitigated if actors co-create policy goals and practices that mesh with existing practices, and provide more resources to enable policy implementation. This paper shows how procurement can help fulfil social policies and the difficulties of achieving that in practice.
Adverse Childhood Experiences, Intimate Partner Violence, and Communication Quality in a College-Aged Sample

Previous adverse childhood experiences (ACEs) research focused on the future effects of intimate partner violence (IPV) among adult men, as well as victimization patterns. Continuing evidence is needed informing how ACEs, communication, and IPV may emerge within the intimate partnerships of 18–24 year olds. The present study addresses a literature gap by investigating ACEs in relation to relationship communication quality and IPV, considering not only victimization but also perpetration. An online survey was distributed through social media outlets targeting college-aged adults (n = 228). Men were more likely to perpetrate and be victimized by IPV than women in the sample. However, both sexes had moderate associations between ACES and victimization as well as perpetration of physical, emotional, sexual, and cyber abuse. Poor communication quality was associated with ACEs and most forms of abuse experienced in the last year. Continued investigation of this topic is warranted to understand mechanisms for effective treatment and skill development.
Non‐Chained, Non‐Interacting, Stable Single‐Domain Magnetite Octahedra in Deep‐Sea Red Clay: A New Type of Magnetofossil?

Magnetic detection and classification of magnetofossils have been proposed as potential tools for paleoenvironmental studies. Magnetosomes in bacterial species living in different environmental conditions exhibit different grain morphologies and chain configurations, which determine their magnetic properties. Recently, abundant magnetofossils have been reported from unfossiliferous pelagic red clay. However, little is known about their geometry and magnetic properties. Here we report very low coercivity biogenic magnetite in red clay from Ocean Drilling Program (ODP) Site 777 in the northern Mariana Basin. Analyzed sediment showed non‐interacting, stable single‐domain‐like magnetic behaviors. Acquisition of isothermal remanence was decomposed into five components, and a component with mean coercivity below 10 mT accounted for around 25 % of the remanence in some samples. Based on comparisons with semi‐quantitative transmission electron microscopy observations of magnetic extracts, this component appears to be carried by octahedral grains with size and shape very similar to biogenic magnetite in red clay from other sites. Micromagnetic calculations indicated that isolated maghemite octahedra may be responsible for the observed low coercivity component. Based on these results, we conclude that the low coercivity component represents non‐chained biogenic magnetite that has been oxidized to maghemite. The crystal morphology, geological setting, and lithology do not suggest unusual environmental conditions for ODP Site 777, so the relative amount of chained versus non‐chained grains may represent subtle environmental differences. We suggest that non‐chained magnetofossils may be widespread in deep‐sea sediments. Some methods could overlook the presence of non‐chained magnetite, affecting the identification and quantification of magnetofossils.
Deficit Irrigation-Nutrient Coupling on Growth, Yield, Fruit Quality and Water Use Efficiency of Indian Jujube

Sustainability of quality fruit production in Indian jujube is adversely affected by improper irrigation and nutrient management. A field study comprising of four irrigation levels (drip irrigation at 0.8, 0.6 and 0.4 of pan evaporation (E0) and surface irrigation at 1.0 IW/CPE with 50 mm depth) and three nutrient levels (100% RDF, 75% RDF+25% RDF as vermicompost and 50% RDF+50% RDF as vermicompost) was conducted during 2018-19 (11 months) on jujube plant. Results showed that tallest tree (3.72 m), greatest tree circumference (0.32 m), maximum fruits tree-1 (563), highest fruit weight (15.5 g) and fruit yield tree-1 (8.42 kg) were recorded with drip irrigation at 0.8 E0 with 100% RDF. Minimum growth, yield components and yield were found with drip irrigation at 0.4 E0 with 50% RDF+50% RDF as vermicompost. Seasonal ETa was 373.6, 409.4 and 446.4 mm for drip irrigation at 0.4, 0.6 and 0.8 E0, respectively and 694 mm for surface irrigation. Maximum CWUE of 18.87 g tree-1 mm-1 was obtained with drip irrigation at 0.8 E0 with 100% RDF. About 55.7-75.5% water was saved by drip irrigations which could bring an additional area of 55.5-85.8% under drip irrigated jujube. Highest predicted yield of 9.02 kg tree-1 was accomplished with 278 mm irrigation water. This model approach could serve as a good guideline to yield potential decision in relation to limited irrigation water for jujube growers in the Indo-Gangetic plains or similar agro-climatic regions.
Exploring the Relationship Between Multilingual Learning Experience, Metalinguistic Knowledge, and Metalinguistic Awareness

The last two decades have witnessed a considerable increase in interest in Third or Additional Language Acquisition (TLA). The positive effects of bilingualism in TLA have related the advantages evident in bilingual learners to the influence of bilingualism on cognitive development and, specifically, Metalinguistic Awareness (MLA). The paper aims, first, at providing a comprehensive portrait of what MLA is, considering the complexity of this factor, its linguistic and cognitive nature along the implicit - explicit continuum. Second, it disentangles the intricate relationship between TLA on one hand, and the development of MLA and other mediating factors on the other, including level of bilingualism, literacy, age of acquisition of the L2, language use, and language knowledge. Third, the work focuses on a factor that has been the object of an intense debate in psycholinguistics, i.e. the role of awareness in the language learning process, to shed light on the different aspects distinguishing Metalinguistic Knowledge (MLK) and Metalinguistic Awareness (MLA) of the language. A comprehensive analysis of the most influential literature in the field, comparing contrasting perspectives of study, will be propounded to offer a comprehensive overview of the discussed phenomena to better understand the impact they have on multilingual education.
Audit committee strength and auditors' risk assessments: The moderating role of CEO narcissism

This paper examines the impact of two elements of the client's control environment on auditor's assessment of the risk of material misstatement: audit committee strength and CEO narcissism, the latter of which is a component of management philosophy, operating style, and tone at the top. We predict and find that auditors' risk assessments are adequately responsive to both elements; however, importantly, a strong audit committee decreases perceived risk assessments only when the client has a CEO with less narcissistic characteristics. In other words, our findings suggest that the presence of narcissistic CEOs' attitudes weakens the perceived audit committee effectiveness, leading auditors to rely less on a strong audit committee. Our findings contribute to the auditing literature by exploring auditors' responses to the complex dynamics between management boards and those charged with governance. From a practical perspective, our results suggest that auditing standards and practice guidance should consider making such complexities and the role of management attitudes and styles even more explicit.
Serogroup Variation with Use of Immunomagnetic Separation to Detect and Isolate Shiga Toxin-producing Escherichia coli O157 and the Big Six Non-O157

*Author for correspondence: Telephone: +1 806.834. 4074; E-mail: alexandra.calle@ttu.edu Serogroup Variation with Use of Immunomagnetic Separation to Detect and Isolate Shiga Toxin-producing Escherichia coli O157 and the Big Six Non-O157 1International Center for Food Industry Excellence, Dept. of Animal and Food Sciences, Texas Tech University, Box 42141, Lubbock, Texas 79409, USA Alexandra Calle,1* Guy H. Loneragan1 and Mindy M. Brashears1
Study of the generalized P-contractions on Banach spaces and uniqueness for stability fixed points

This article aims to introduce some concepts such as $P$-contraction and $G-P$-contraction which are defined on Banach spaces as stronger forms of the concepts of $P$-contraction and '{C}iric type generalized $P$-contraction defined on complete metric spaces, respectively. Furthermore, the relationship between these concepts have been discussed. Finally, the uniqueness of fixed point for the presented concepts has been investigated.
A review on combustion instabilities in energy generating devices utilizing oxyfuel combustion

This paper reviewed theoretical, numerical, and experimental studies on combustion instabilities in combustors for energy‐producing devices such as gas turbines, boilers, and furnaces utilizing oxyfuel combustion technology. Oxyfuel combustion as a CO2 capture technology gives encouraging and promising solutions for controlling greenhouse gases emission from combustion devices. However, the major concerns with oxyfuel systems are the combustion instabilities mainly arising from the CO2 dilution required for controlling excessive temperatures. Higher dilution levels or significantly nonuniform distribution of CO2 in the mixture can potentially lead to static and/or dynamic instabilities associated with local flame extinction and unsteady heat release rate, respectively. As in the case of lean premixed air/fuel flames, combustion instabilities are among the most critical operational challenges encountered in CO2‐diluted oxyfuel systems as well. Existing literature on flame instabilities has predominately focused on air‐fuel flames, with very few research studies dedicated to the same phenomena in oxyfuel combustion. With an ever‐increasing push toward carbon capture and reduction in NOx emissions, it has become important for the combustion community to accelerate research efforts in the direction of oxyfuel combustion systems. This review study on flame instabilities in oxyfuel combustors is one small step in that very direction. This paper starts with discussions on the theoretical mechanisms of combustion instabilities. Then a range of numerical and experimental studies, from premixed to non‐premixed flames, are presented and discussed. The main objective is to summarize recent progress in understanding instabilities in oxyfuel combustion systems, focusing primarily on the effect of CO2 dilution on flame stability. A range of experimental and numerical studies by various groups have strongly associated both static and dynamic instabilities in oxyfuel systems with diluent concentration, suggesting higher concentrations potentially result in a stratified mixture field which leads to higher heat release fluctuations and pressure oscillations. As such, many combustion systems use hydrogen enrichment to enhance static stability while employing flow and/or fuel modulation to dampen dynamic instabilities in oxyfuel combustors. Finally, we highlight and summarize some of the key issues and unsolved questions that still challenge researchers and, therefore, need to be the focus of future research work as regards to oxyfuel combustion.
Light-Weight Self-Attention Augmented Generative Adversarial Networks for Speech Enhancement

Generative adversarial networks (GANs) have shown their superiority for speech enhancement. Nevertheless, most previous attempts had convolutional layers as the backbone, which may obscure long-range dependencies across an input sequence due to the convolution operator’s local receptive field. One popular solution is substituting recurrent neural networks (RNNs) for convolutional neural networks, but RNNs are computationally inefficient, caused by the unparallelization of their temporal iterations. To circumvent this limitation, we propose an end-to-end system for speech enhancement by applying the self-attention mechanism to GANs. We aim to achieve a system that is flexible in modeling both long-range and local interactions and can be computationally efficient at the same time. Our work is implemented in three phases: firstly, we apply the stand-alone self-attention layer in speech enhancement GANs. Secondly, we employ locality modeling on the stand-alone self-attention layer. Lastly, we investigate the functionality of the self-attention augmented convolutional speech enhancement GANs. Systematic experiment results indicate that equipped with the stand-alone self-attention layer, the system outperforms baseline systems across classic evaluation criteria with up to 95% fewer parameters. Moreover, locality modeling can be a parameter-free approach for further performance improvement, and self-attention augmentation also overtakes all baseline systems with acceptably increased parameters.
Experimental study on the direct contact condensation of steam jet in the passive safety injection tank

ABSTRACT The direct contact condensation and subsequent thermal mixing by the injected steam jet onto a quiescent coolant inside a tank were examined experimentally to simulate the phenomena in passive safety injection systems. Specifically, the influence of the steam injection velocity was studied. Even though the total flow rate of injected steam was unchanged, the pressure inside the tank increased quickly at the larger nozzle diameter. Additionally, at a larger nozzle diameter, the thickness of the thermal mixing zone decreased because the amount of direct contact condensation decreased. For the in-depth study on the role of the nozzle size for the thermal mixing, the particle image velocimetry method was used to understand the flow field of water inside the tank. The visualization results demonstrated the formation of a flow field in the coolant due to the expansion and contraction of the steam–air mixture boundary. Furthermore, the thermal mixing zone was found to be closely related to the penetration depth. Finally, a variety of penetration models were examined and compared against the experimental observation. The correlations based on the steam condensation approach under-predicted the penetration depth, whereas the approach that considers the momentum of non-condensable gas gave the reasonable prediction capability.
Assessment of Gender Differences in Depression- A Cross-Sectional study

Background and Aim: Major depression in both women and men is a debilitating disorder that disrupts relationship and daily lives and affects nearly 10% of general populations. The aims and objectives of this study were to determine the gender differences in major depression with respect to following: Demographic characteristics, Clinical manifestations, Stressful life events, Risk factors. Materials and Methods: Total of 100 patients was included in the study. All the included patients meet the criteria for DSM-IV (Diagnostic and Statistical Manual of Mental Disorders) diagnosis of major depression. The included patients were interviewed at the department of Psychiatry, B. J. Medical College & civil hospital Ahmedabad. Based on the Life Events Scale by Holmes and Rahe (1967), its Indian adaptation PSLE (Presumptive stressful life events scale) was done by Gurmeet Singh (1983). The statistical analysis was done by using SPSS IX version. Results: Their ages range from 18 to 70 years. Most of the patients were married, were from urban background, and nuclear family. On Hamilton Depression rating scale when the statistical analysis was done, there was no significant difference between males and females. Men had higher mean life events score than women but this was not statistically significant. In female, there was significant positive correlation between number of life events in one year and severity of depression as well as impact score during one year prior to onset of depression and Hamilton rating scores. Conclusion: Male and female major depression patients did not differ as regards demographic characteristics, except that most women were homemakers and men were employed. Number of stressful life events experienced during 1 year prior to onset of MDD was similar. Early insomnia, middle insomnia and somatic symptoms general were more severely present in female patients.
Oleozon Versus Major Autohemotherapy in the Treatment of Dry Socket

Dry socket (DS) is a very common post-extraction complication. Pain is the most important clinical symptom in DS. Although many studies provided variant treatment methods for pain alleviation, there is still a wide controversy about their efficacy. Ozone achieved promising results in the treatment of variant conditions including DS due to its powerful oxidation and metabolism enhancement capacity, however, no enough data is available in the literature about its efficacy in DS treatment; particularly the comparative studies. In the current comparative study, forty patients with DS were randomly divided into two equal groups. In Group I, a brief saline irrigation of the extraction socket was followed by ozone major autohemotherapy (AHT) which was performed by withdrawing a venous blood to be ozonized; and then being reinfused into the vain. A cotton pellet impregnated with Oleozon was lightly packed in the socket after a brief saline irrigation in group II patients. Oleozon was more effective than AHT regarding the required total treatment period and the number of the required analgesic tablets. Oleozon might have an increased capacity of oxygen delivery to the ischemic tissues than AHT. This might provide an evidence for the ischemic etiology of the dry socket development.