Miracle-dz/UniFAR-FTUs huggingface dataset:
Augmented Reality Blended Learning Instruction: The Impact on Growing Motivation, Attitudes, and Knowledge in 3D Geometry

The COVID 19 pandemic promotes several new technological products to facilitate learning process. However, there are still few studies on the integration of Augmented Reality (AR) technology into Blended Learning (BL), particularly on the education of prospective mathematics teachers. This research examines the effect of using augmented reality blended learning during the COVID 19 epidemic on 3D geometry, as well as the learning motivation and attitudes. 15 prospective teachers, including 4 males and 11 females, at one of Indonesia's private universities were engaged in to determine how 3D geometry is understood. Data on learning motivation and attitudes were collected through questionnaires and interviews and analyzed using descriptive statistics and paired-samples t-test. The results show that during the COVID-19 pandemic, augmented reality blended learning facilitates the comprehension of 3D geometry knowledge by prospective teacher applicants and promotes learning motivation and attitudes. Therefore, the use of new technology is significant to prospective teachers' needs, especially during the COVID 19 pandemic, to facilitate their teaching practice in real classrooms.
Structural behavior of prestressed self‐compacting concrete‐encased concrete‐filled steel tubes beams

Concrete‐encased concrete‐filled steel tubes (CFST) has extensive applications in the world. According to previous researches, if the CFST is placed in the compression zone, the confinement increases, and the compressive capacity of the concrete is completely used. The prestressed strands also increase the core concrete confinement and eliminate tension cracks. Therefore, in this paper, to achieve the benefits of CFST and prestressed strand, for the first time, a novel concept called prestressed concrete‐encased CFST (PCE‐CFST) beams were introduced. The main objective of the combination of steel tube and pre‐stressed strands is to increase the core concrete compressive strength and control the concrete crack in the tension zone. Six beams were constructed using self‐compacting concrete to investigate the influence of variations in the pre‐stressing force level of the pre‐stressed strands, the pre‐stressed strands eccentricity, and the steel tubes diameter‐to‐thickness ratio on the structural performance of these members. The specimens were tested under four‐point loading. The results showed that the pre‐stressed strands increased the confinement effect on the core concrete and improved the bearing capacity, ductility, and bending stiffness. The steel tubes improved the bearing capacity, ductility, and energy absorption, while they did not significantly affect the bending stiffness. Finally, it was shown that the pre‐stressed strands increased the bearing capacity, energy absorption, and bending stiffness in reinforced concrete beams.
Role of Calcium Fertilizers on Yellow Pepper Productivity

Optimal calcium nutation of yellow pepper plants is considered one of the most significant factor for best growth, development and yield as well as fruits quality. So, foliar fertilizations have been applied with large in horticultural production especially vegetable crops. Calcium is one of vital nutrients all over plant life cycle. The aim of this research was to compare and evaluate the effects of different Ca fertilizers (sources) on productivity of yellow pepper hybrid VZ 461 grown under open filed conditions. Ca was applied in the following forms chelated, chloride, nitrate, sulphate, superphosphate and complex with boron. All calcium sources have positive effects on growth, biochemical content, photosynthetic pigments, yield and fruits quality compared with the control. Also, all Ca treatments caused a few numbers of fruits with blossom end root (BER) symptoms percentage compared with control fruits. The superior one was Ca chelated in most cases and followed by calcium nitrate and complex with boron in both seasons of study.
Polar tongue of ionisation during geomagnetic superstorm

Abstract. During the main phase of geomagnetic storms large positive ionospheric plasma density anomalies arise at middle and polar latitudes. A prominent example is the tongue of ionisation (TOI), which extends poleward from the dayside storm-enhanced density (SED) anomaly, often crossing the polar cap and streaming with the plasma convection flow into the nightside ionosphere. A fragmentation of the TOI anomaly contributes to the formation of polar plasma patches partially responsible for the scintillations of satellite positioning signals at high latitudes. To investigate this intense plasma anomaly, numerical simulations of plasma and neutral dynamics during the geomagnetic superstorm of 20 November 2003 are performed using the Thermosphere Ionosphere Electrodynamics Global Circulation Model (TIE-GCM) coupled with the statistical parameterisation of high-latitude plasma convection. The simulation results reproduce the TOI features consistently with observations of total electron content and with the results of ionospheric tomography, published previously by the authors. It is demonstrated that the fast plasma uplift, due to the electric plasma convection expanded to subauroral mid-latitudes, serves as a primary feeding mechanism for the TOI anomaly, while a complex interplay between electrodynamic and neutral wind transports is shown to contribute to the formation of mid-latitude SED anomaly. It is suggested that better representation of the high-latitude plasma convection is needed. The results are discussed in the context of space weather modelling.
Teacher’s Behavior: Behavior-Specific Praise (BSP) towards Students’ Speaking Performance

Teacher’s behavior plays an essential role in influencing students’ learning. One of teacher’s behavior which mostly appears in a classroom is teacher’s praise, especially Behavior-Specific Praise (BSP) which was firstly conducted by Brophy (1981) to praise students’ specific behavior. However, the use of BSP is still debatable. Some researchers found that praise can affect students positively (Lipnevich & Smith, 2008). Others, in contrast, argued that praise leads to negative effects (Deci, Koestner, & Ryan, 1999). Therefore, these differences motivated this research. It investigated the students’ positive and negative outcomes of teacher’s BSP in terms of speaking performance, also, to explore the teacher’s and students’ responses about BSP during speaking class. A qualitative case study was used as the research design which employed three data collection techniques consisted of document analysis, questionnaires and interview. This work carried out at one of SHS in Bandar Lampung. One teacher and 30 eleventh graders were recuited as the participants. The results showed that BSP were confirmed to motivate the students to improve their speaking ability leading to the positive outcomes. While the negative sides found was that BSP statements were sometimes misunderstood by a number of students. After all, the teacher agreed that BSP statements increased the students’ school-wide expectations. cross validating the screenshots of comments on students’ speaking performance. After analyzing the data, the into three parts as well as the questionnaires given. The
Talk test: a simple alternative to identify lactate
thresholds during progressive cycling exercise

The assessment of speech production difficulty has been used to control aerobic exercise intensity through the Talk Test method. The aim of this study was to compare the Talk Test variables to lactate thresholds using an incremental test. Thirteen male subjects performed an incremental cycle test to identify the first lactate threshold (LT1), second lactate threshold (LT2) and transition points of the Talk Test. During the incremental exercise test subjects read aloud a standard paragraph at the end of each stage. The last stage at which the subjects could talk comfortably, the first stage at which the subjects could not talk comfortably, and the first stage at which they definitely could not talk comfortably were referred to as the last positive (LP), equivocal (EQ) and negative stages (NEG), respectively. The power output (88±22W) and heart rate at the first lactate threshold (115±15 bpm) were significantly lower (p<.05) than the power output at the last positive (127±26 W) and heart rate (131+21 bpm) at the last positive. The power output and heart rate at the second lactate threshold (169.5 ± 22.6 W; 157 ± 14 bpm) were not significantly different (p=.195) from power output and heart rate at the equivocal (178.8± 30.3 W; 161 ± 15 bpm). The heart rate at the second lactate threshold and equivocal were significantly correlated (r=.57; p<.05). In conclusion, this study showed that the equivocal stage of the Talk Test can be used as a simple tool to indirectly identify the second lactate threshold in healthy men during cycling exercise. Keys words: exercise test, speech production, physiological thresholds
Prevalência e fatores associados às malformações congênitas em nascidos vivos

Resumo Objetivo: Estimar a prevalencia de malformacoes congenitas e identificar os fatores associados em nascidos vivos. Metodos: Estudo transversal, de base populacional, com dados do Sistema de Informacoes sobre nascidos vivos. Procedeu-se a uma analise estatistica bivariada (teste Qui-quadrado) e multivariada (regressao logistica multipla) para avaliar a associacao entre as variaveis e o desfecho (nascidos vivos que possuem ou nao malformacoes congenitas). Resultados: Registraram-se 346.874 nascidos vivos, desses 3.473 apresentaram algum tipo de malformacao congenita, com prevalencia media de 1,0%. [. ]
New Physics with LHCb to explain loss of lepton universality, or just gravity?

In a multi-fold universe, gravity emerges from Entanglement through the multi-fold mechanisms. As a result, gravity-like effects appear in between entangled particles that they be real or virtual. Long range, massless gravity results from entanglement of massless virtual particles. Entanglement of massive virtual particles leads to massive gravity contributions at very smalls scales. Multi-folds mechanisms also result into a spacetime that is discrete, with a random walk fractal structure and non-commutative geometry that is Lorentz invariant and where spacetime nodes and particles can be modeled with microscopic black holes. All these recover General Relativity (GR) at large scales and semi-classical model remain valid till smaller scale than usually expected. Gravity can therefore be added to the Standard Model resulting into what we defined as SMG. This can contribute to resolving several open issues with the Standard Model without new Physics other than gravity. These considerations hints at a even stronger relationship between gravity and the Standard Model. Recently, there has been a flurry of enthusiasm following announcement of 3.1-sigma violation of lepton universality at LHCb. Many articles, papers and pundits see it as hints of New Physics. In this paper we hypothesize that gravity could explain these observation, instead of New Physics understood as new particles or forces. The proposal can be strongly justified in a multi-fold universe with SMG. It could also make sense, in general, whenever SMG can be motivated. ____
Space Nuclear Propulsion Fuel and Moderator Development Plan Conceptual Testing Reference Design

Abstract As future U.S. National Aeronautics and Space Administration (NASA) missions aim for destinations farther out into the solar system, space nuclear propulsion (SNP), and in particular nuclear thermal propulsion (NTP), is the only feasible near-term technology able to provide specific impulses of 900 s or greater and thrust in the range of tens of thousands of pounds. To maximize the success of the SNP program as a whole, a Fuel and Moderator Development Plan (FMDP) was created to mature mission critical technology, such as the reactor fuel form and moderator material. This technical note details the conceptual testing reference design that provides the basis for the FMDP for future design and testing activities to meet NASA’s goals. Through this work BWX Technologies, Inc. and its subsidiaries, referred to as BWXT, continue to be an integral part of government space nuclear programs and has historically been a part of major design, manufacturing, and testing developments. As an example, during the 1990s BWXT supported fuel development for the Space NTP (SNTP) program, an advanced technology development effort aimed at providing the nation with a new and dramatically higher performing rocket engine that would more than double the performance of the best conventional chemical rocket engines. Since 2017, BWXT has been participating in the NASA SNP program for the low-enrichment uranium NTP rocket engine as part of its Game Changing Development feasibility conceptual design program and now more recently Technology Demonstration Mission.
Mycorrhizal Inoculation Improves Mineral Content of Organic Potatoes Grown under Calcareous Soil

Soil mycorrhization can play an important role for the qualitative improvement of organically grown “early” potato tubers especially in low fertility soils (such as calcareous ones), by ameliorating plant uptake of limiting mineral nutrients in the soil. Hence, the objective of the present research was to elucidate the impact of soil mycorrhization on the tuber minerals content of three potato cultivars organically grown in two locations with different soil characteristics. Our data revealed the keyrole of soil mycorrhization on the tuber accumulation of Na, Cu, Mn, and P and on reducing the Na/K ratio, although the effects of soil mycorrhization were cultivar- and location-dependent. Accordingly, soil mycorrhization was able to enhance the levels of K and Ca in ‘Arizona’ and that of Mn in ‘Universa’, while it increased the Zn amount in all the cultivars under study. Additionally, soil mycorrhization significantly improved the levels of Cu and Mn in tubers in the location characterized by an initial higher soil level of these micro-minerals. This work highlighted the possibility to fortify organic early potato tubers, in terms of macro- and micro-mineral elements, by applying an eco-sustainable tool such as soil mycorrhization, provided that specific consideration is given to cultivar choice and soil characteristics.
Hashtag Wars: Political Disinformation and Discursive Struggles on Twitter Conversations During the 2018 Brazilian Presidential Campaign

In this article, we analyze the spread of political disinformation in events of discursive struggles on Twitter, during the 2018 presidential election in Brazil. These were disputes for the hegemonic narrative between two stories based on opposed hashtags: one based on news from mainstream media and the other, based on disinformation, mostly from hyperpartisan outlets. Our goal was to understand how hyperpartisan outlets created and shaped these discursive struggles and the strategies used to spread disinformation to create an “alternative narrative” to the facts. Our case study is focused on two discursive struggles, for which we will use critical discourse analysis and social network analysis. Our findings suggest that (1) the structure of the hashtag wars was very polarized and right-wing groups had higher exposure to hyperpartisan content and disinformation, while traditional media discourse circulates more among other different ideological clusters; (2) right-wing hyperpartisan media mostly used biased framing and polarized ideological discourse structure as manipulative strategies to reframe the events and create a counter-narrative (and thus, to create the dispute); and (3) opinion leaders were major spreaders of disinformation among far-right users, as they reinforced hyperpartisan content and became key actors in the discursive struggles (and thus, reinforced the dispute).
What are the environmental capabilities, as components of the sustainable intellectual capital, that matter to the CEOs of European companies?

PurposeEnvironmental capabilities, allowing companies to carry out their productive activities in ways that limit damage to natural environment, are at the heart of the fourth stage of research in intellectual capital. Accordingly, the purpose of this research is to explore firm's current environmental capabilities, disclosed by managers through corporate messages, that participate to the development of sustainable intellectual capital (SIC). Design/methodology/approachWith this in mind, we first conducted a lexical content analysis followed by a thematic content analysis of 241 letters to shareholders from the CEOs of major European companies published in 2016.FindingsThe lexical content analysis reveals that managers of major European companies have developed green alliances to address the energy transition challenge by modifying their manufacturing processes. The thematic content analysis of the CEOs discourse highlights that managerial competencies, continuous innovation and stakeholder integration are key environmental capabilities that matter to CEOs.Research limitations/implicationsThis study contributes to the fourth stage of research on IC highlighting the environmental capabilities and resources that are disclosed by companies in their corporate communication. Our results enhance the understanding on how environmental capabilities and resources enhance the human, organizational, technological and relational sustainable intellectual capital.Practical implicationsThis research highlights the importance of green alliances that allow companies to address the challenge of the ecological transition. In this context, the continuous innovation capability seems to be a fruitful way of gaining competitive advantage in this challenge.Originality/valueThis paper provides a detailed description of the environmental capabilities that participate to the development of the human, technological and relational SIC.
Chemical Bath Deposition of Zinc Sulfide Films Doped With Copper

Zinc sulfide (ZnS) films are doped with low copper concentrations by the chemical bath deposition (CBD) technique on glass substrates. The basic chemical bath contains ZnSO4, KOH, NH4NO3, and thiourea as chemical reagents. Different volumes of copper chloride solution (0.004 M) were included into the basic solution for doping. Doped films were deposited in a chemical solution at 363 K and deposition times from 30 to 90 min. The chemical solution and films present changes, from pale to dark-brown, in their color when the Cu doping is increased. The bandgap energy of the undoped and doped films ranged from 3.68 to 3.72 eV, meanwhile the crystalline structure suffers an amorphization with doping. The Cu-doped ZnS was verified with the photoluminescence technique.
The Relationship Between Serum Uric Acid and Cardiometabolic Risk Factors in Iranian Children and Adolescents

Context: There has been an increasing interest in epidemiological and clinical studies concerning the role of uric acid in cardiometabolic diseases, especially in children and adolescents. However, these potential relationships remain undiscovered; accordingly, its pathophysiological mechanisms remain unrecognized. This study aimed to assess the potential association between Serum Uric Acid (SUA) levels and cardiometabolic risk factors in a population-based sample of Iranian children and adolescents. Objectives: This study aimed to assess the potential association between Serum Uric Acid (SUA) levels and cardiometabolic risk factors in a population-based sample of Iranian children and adolescents. Methods: The data of 595 individuals aged 7-18 years were assessed in this research. Anthropometric measurements and laboratory tests were performed according to standardized protocols. Results: The Mean±SD age of the 595 explored students was 12.39±3.07 years. The overall Mean±SD SUA level of the study participants was measured as 4.22±1.13 mg/dL, with significant gender-wise differences (4.04±0.97 mg/dL vs 4.38±1.24 mg/dL, respectively; P<0.05). The prevalence of hyperuricemia based on the 90th percentile of SUA levels was equal to 10.6%. There was a positive association between SUA levels and abdominal obesity (waist circumference: ≥90th percentile) [Odds Ratio (OR): 1.54; 95% Confidence Interval (CI): 1.26 to 1.86] and general obesity [gender-specific Body Mass Index (BMI) for >95th percentile] (OR: 2.32; 95% CI: 1.74 to 3.11). Conclusions: This study suggested BMI and waist circumference as cardiometabolic risk factors, i.e. significantly associated with SUA levels in children and adolescents.
Financial Risk of Conventional and Islamic Banks: Does Institutional Quality Matter?

Banks play a significant role in financing the economy and take on risky financial activities based on information and trust as they specialized companies with their own specificities. This study was propelled to unravel the determinants that affect financial risk (liquidity risk and credit risk) for conventional and Islamic banks. The bank-level data of conventional and Islamic banks in the regions of Middle East, Southeast Asia, and South Asia between 2006 and 2014 were collected from the Bankscope, which is a commercial database produced by the Bureau van Dijk. Thus, for conventional banks the obtained results exhibited significantly positive relationship between regulatory quality towards liquidity risk. Then, the relationship between regulatory quality towards credit risk was negatively significant for conventional banks. Meanwhile, as for Islamic banks, the relationship between government effectiveness and regulatory quality towards financial risk was insignificant. Hence, the regulators or policymakers are able to identify specific mechanism to improve the risk management of these banks as well through this study.
Diagnostic value of lymph node fine-needle aspiration cytology

Objectives: This study aims to assess the diagnostic accuracy of cytology by comparing the results of fine-needle aspiration cytology (FNAC) and histopathologic examination. Material and Methods: A 4-year retrospective study design was conducted on FNAC samples from the lymph nodes of patients in our hospital between January 2015 and December 2018. The cytopathological diagnoses were compared with the histopathological results of the same excised lymph nodes. Diagnostic sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy rate were calculated. Results: A total of 392 lymph nodes were aspirated during the study period. Cytologic analysis of the lymph nodes revealed the following: Reactive lymphoid hyperplasia, 239 (61%); metastatic, 61 (15.6%); granulomatous lymphadenitis, 24 (6.1%); suspicious, 24 (6.1%); pyogenic abscess, 10 (2.6%); necrosis, 4 (1%); non-Hodgkin lymphoma, 2 (0.5%); and non-diagnostic, 28 (7.1%). Immunohistochemical analysis was performed on 26 (6.6%) cases to the cell block samples. Histopathological correlation was available in 73 (18.7%) cases. The overall diagnostic sensitivity, specificity, PPV, and NPV of FNAC of lymph nodes were 87.9%, 100%, 100%, and 89.7%, respectively. The overall diagnostic accuracy was 94.1%. In case of malignancies, the histopathological correlation was 100%. Of four cases with false negative, three were low-grade non-Hodgkin lymphoma and one was granulocytic sarcoma. Conclusion: FNAC of lymph nodes is a safe, easy, cheap, quick diagnostic tool and reduces the need for diagnostic excisional biopsy in many patients. Cytological diagnosis can be supported with immunohistochemical analysis of cell block samples. However, lymphomas, particularly low-grade non-Hodgkin lymphomas, are a diagnostic challenge and additional studies such as flow cytometry are required in cases with suspicious for lymphoma.