Miracle-dz/UniFAR-FTUs huggingface dataset:
Virtual Physics Laboratory Application Based on the Android Smartphone to Improve Learning Independence and Conceptual Understanding.

The research study concerned here was to: (1) produce a virtual physics laboratory application to be called ViPhyLab by using the Android smartphone as basis; (2) determine the appropriateness and quality of the virtual physics laboratory application that had been developed; and (3) describe the improvement in learning independence and conceptual understanding of rotational dynamics after using the ViPhyLab application. The study was research and development (R&D) in design. The product was validated by a physics expert, an instructional media expert, peer reviewers, and physics teachers. The product underwent one-on-one testing, restricted testing, and field testing. The field testing used the one-group pre-test post-test design. The test subjects were forty students of Senior High School (Sekolah Menengah Atas, SMA, in Indonesia), Pekanbaru. The data collection was conducted by using a questionnaire, learning independence test, and conceptual understanding test. The appropriateness and quality of the application were analyzed descriptively. Improvement in learning independence and conceptual understanding was analyzed through paired t-test. Results of the study indicated: (1) ViPhyLab is an Android application that could be operated for learning both at and outside school; (2) the ViPhyLab application is quite viable as learning media and of very good quality.
Gauge-invariant quantum gravitational corrections to correlation functions

A recent proposal for gauge-invariant observables in inflation (Brunetti et al 2016 J. High Energy Phys. JHEP08(2016)032) is examined. We give a generalisation of their construction to general background spacetimes. In flat space, we calculate one-loop graviton corrections to a scalar two-point function in a general gauge for the graviton. We explicitely show how the gauge-dependent terms cancel between the usual self-energy contributions and the additional corrections inherent in these observables. The one-loop corrections have the expected functional form, contrary to another recently studied proposal for gauge-invariant observables (Fröb 2018 Class. Quantum Grav. 35 035005) where this is not the case. Furthermore, we determine the one-loop graviton corrections to the four-point coupling of the gauge-invariant scalar field, and the corresponding running of the coupling constant induced by graviton loops. Interestingly, the β function is negative for all values of the non-minimal coupling of the scalar field to curvature.
An In Vitro Evaluation of the Effects of Air-Polishing Powders on Sound and Demineralised Enamel

Aim: To evaluate the effects of two air-polishing powders, during orthodontic treatment, on the surface roughness of sound and demineralised enamel. Materials and methods: Forty-two caries-free human molars were collected, and the enamel surfaces were flattened and polished. Teeth were assigned to two groups (n = 21 each), a sound- and a demineralised-enamel group (subjected to pH-cycling over 2 weeks to create artificially induced white spot-like lesions). Within each group, teeth were further assigned to three groups (n = 7 each), air polished with either sodium bicarbonate, erythritol, or a negative control (water). Each sample was treated for 5 and 150 s. The average surface roughness (Ra) for each sample was measured using white-light-sensor profilometry. Results: On sound enamel, the Ra was roughly 0.17 ± 0.07 μm. After 150 s of air polishing, the Ra increased with erythritol (by 0.28 μm), and even more so with bicarbonate treatment (by 0.68 μm) (p < 0.01). On demineralised enamel, the Ra was roughly 0.79 ± 0.56 μm. The Ra increased after 5 s of air-polishing treatment similarly with erythritol and bicarbonate powders (by 1.03 μm and 1.04 μm, respectively) (p = 0.025), and even more after 150 s (by 2.48 μm and 2.49 μm, respectively) (p < 0.001). Conclusions: On white spot lesions, one should be aware that enamel surface roughness will increase with both erythritol and bicarbonate air-polishing powders, especially with longer exposure times.
Prevalence of depression, anxiety, and stress among the general population during COVID-19 pandemic: A systematic review

The emergence of Coronavrus Disease 2019 (COVID-19) has resulted in significant impacts on individuals and the whole world. It can lead to severe health outcomes that may lead to death. It also affects the psychological status and mental health of the individuals due to fear of infection, isolation, and quarantine. To assess the prevalence of depression, anxiety, and stress among the general population during the COVID-19 pandemic by reviewing the previous studies and original articles published on this subject. Both PubMed and Google Scholar databases were searched for scientific articles that reported the prevalence of depression, anxiety, and/or stress among the general population during the COVID-19 pandemic. The included terms used for the search process were “Prevalence, Anxiety, Depression, Stress, COVID-19, Pandemic, Psychological impact. ” The inclusion criteria were original articles written in the English language and conducted on the general population and reported the prevalence of depression, anxiety, and/or stress during COVID-19. A total of 2204 articles were obtained; only nine articles were eligible for the inclusion criteria. The included studies involved a total number of 19,277 participants and covered eight countries. The age range of participants was less than 18 years to 90 years, and female participants were more dominant compared to male participants in the majority of the studies. The prevalence of depression, anxiety, and stress was varied based on the region of studies and affected factors; however, the COVID-19 pandemic increased the prevalence of the three items.
Characterization of finite $p$-groups by the order of their Schur multipliers ($t(G)=7$)

‎Let $G$ be a finite $p$-group of order $p^n$ and‎ ‎$|{mathcal M}(G)|=p^{frac{1}{2}n(n-1)-t(G)}$‎, ‎where ${mathcal M}(G)$‎ ‎is the Schur multiplier of $G$ and $t(G)$ is a nonnegative integer‎. ‎The classification of such groups $G$ is already known for $t(G)leq‎ ‎6$‎. ‎This paper extends the classification to $t(G)=7$.
SELF-REGULATION IN THREE TYPES OF ONLINE INTERACTION: A STUDY AT A TEACHER PREPARATION PROGRAM AMIDST COVID-19 PANDEMIC

Having done the online learning mode for the conduct of teaching and learning activities for more than a year as the impact of covid-19 pandemic, this article presents a report on how the students have managed their learning. Specifically, this present study was aimed to describe the three aspects of self-regulation in three types of online interaction: students’ self-regulation in interaction between them and content; students’ self-regulation in interaction between them and their teacher; and students’ self-regulation in interaction between them and their peers. In addition, this present study also looked at the correlation between self-regulation and the students’ academic performance and find out which aspect was significantly correlated with the academic performance. Involving 205 students of a teacher preparation program as the participants and used the Online Self-Regulated Questionnaire (OSRQ) to collect the data, it was found that the average mean score for the online interaction was above 5, suggesting that the students tended to agree with the statements in the three types of online interaction. The finding also revealed that a weak and positive, but not significant correlation existed between the students’ self-regulation of online interaction and their academic achievement.
Neural ODEs for Data-Driven Automatic Self-Design of Finite-Time Output Feedback Control for Unknown Nonlinear Dynamics

Many application fields, e.g., robotic surgery, autonomous piloting, and wearable robotics greatly benefit from advances in robotics and automation. A common task is to control an unknown nonlinear system such that its output tracks a desired reference signal for a finite duration of time. A learning control method that automatically and efficiently designs output feedback controllers for this task would greatly boost practicality over time-consuming and labour-intensive manual system identification and controller design methods. In this contribution we propose Automatic Neural Ordinary Differential Equation Control (ANODEC), a data-efficient automatic design of output feedback controllers for finite-time reference tracking in systems with unknown nonlinear dynamics. In a two-step approach, ANODEC first identifies a neural ODE model of the system dynamics from input-output data of the system dynamics and then exploits this data-driven model to learn a neural ODE feedback controller, while requiring no knowledge of the actual system state or its dimensionality. In-silico validation shows that ANODEC is able to —automatically— design competitive controllers that outperform two controller baselines, and achieves an on average ≈ 30 % / 17 % lower median RMSE. This is demonstrated in four different nonlinear systems using multiple, qualitatively different and even out-of-training-distribution reference signals.
Effects of solar radiation and correction of surface temperature by net radiation estimates in northern Pantanal

Abstract. Net radiation (Rn) is a critical variable in estimating energy balance and evapotranspiration by remote sensing techniques on a regional scale. The objective of this paper is to evaluate the effect of estimated and measured instantaneous solar radiation (Rg) and the atmospheric correction of surface temperature by Landsat 8 images on the estimated surface Rn in northern Pantanal. Rn and meteorological factors were measured on a floodplain and on two nonflooded areas in northern Pantanal. Rg was estimated by models proposed by Zillman et al. (RgZillman) and Allen et al. (RgAllen). Surface temperature was corrected by atmospheric and emissivity effects. Annual and seasonal averages of solar radiation were not different among the experimental sites. The floodplain area featured higher net radiation than both nonflooded areas. Instantaneous Rninst estimated by measured Rg and with RgAllen were not different from measured Rninst. Rninst estimated by surface temperature was, on average, 5.7% higher, with a 22% error lower than Rninst estimated with brightness temperature. The current study highlights the possibility of estimating Rninst by RgAllen and the need for correcting the effect of the atmosphere and surface emissivity to estimate surface temperature and Rninst.
Evolution of localized artificial disturbance in 2D and 3D supersonic boundary layers

The evolution of a controlled broadband wave packet in flat-plate and swept-wing supersonic boundary layers was experimentally investigated at Mach number M = 2. The wave packet was introduced into the boundary layer by a localized pulse electrical discharge. The structure and evolution downstream of the wave packet were studied by hot-wire measurements. It was found that the wave packet has a symmetric shape in a flat-plate boundary layer, whereas there is asymmetry in case of a swept-wing one. The spectral analysis of the development of different modes of the wave packet was provided.
PARAXONASE-1 GENE POLYMORPHISM AND PARKINSON'S DISEASE IN PESTICIDES EXPOSED PATIENTS

Background: Chronic low-level exposure to organophosphates is a significant hazard for the human. It was reported to have an adverse neurological complication, including Parkinson's disease (PD). Studying gene-environment interactions may elucidate the complex origins of idiopathic Parkinson's disease. Aim of the study: To investigate the relation between PON1 polymorphisms (PON1 192Q/R ) and its enzymatic activity and PD in patients with chronic exposure to organophosphorus pesticides. Patients and Methods: This study was conducted on 190 PD and 190 healthy persons. All participants were subjected to urine analysis for dialkyl phosphate metabolites (DAPs) detection, serum paraoxonase/arylesterase activity, and blood samples subjected to isolation of genomic DNA for PON1 polymorphisms genotyping using polymerase chain reaction–restriction fragment length polymorphism method. Results : There was no significant difference between patient and control groups regarding socio-demographic characteristics except for occupational history, as 85.3% of cases reported a history of pesticide exposure for more than ten years (56.8%). GC-MS analysis of urine samples revealed that 91.9% of cases have statistically significant detectable DAPs metabolites compared to 24.2% of controls. The mean value of serum PON1/arylesterase activity was statistically significantly lower in PD than in the control. The study revealed that RR homozygotes and R allele subjects showed a higher risk for PD (P<0.001 for each). Conclusion: The present study indicated that PON1 gene polymorphisms may contribute to susceptibility to Parkinson's disease in Egyptians. Parkinson's disease may importantly be influenced by PON1 polymorphism in interaction with organophosphorus exposure.
Centrality measures on networks and empirical analysis on activity driven network models

Social network analysis involves structural studies on social networks, and it benefits measures of graph theory. Centrality indicators are one of these measures, and they map the characteristics of networks. In the first part of this thesis we study the effects of centrality measures on various network types, including degree, closeness and betweenness centrality. Connections in social networks are rapidly changing, through triadic closures, membership closures or foci closures. Correspondingly, the second part of this thesis and the main objective is first to imitate modeling of an evolving network which thoroughly repeats the behavior of real life networks, and then study triadic closures and topological features of this model. Generation of this model includes power law distribution; thus, its degree distribution and other properties resemble features of three studied datasets. Our analysis on this model gives novel results since the model forms triadic closures as in actual social networks. At the end of our analysis we discuss the reasons of triadic closures in this model with the help of centrality indicators and clustering coefficient.
Exploring Primary School Mathematics Teachers' Strategies for Enhancing Students' Mathematical Writing Skills

This study aimed to determine female mathematics teachers’ level of performance in employing the teaching practices necessary to develop mathematical writing among female primary school students. It used the descriptive survey approach and collected data through observation. The study sample comprised 48 female teachers. The study generated several interesting results, most notably that the mathematics teachers’ level of performance was average, with overall means of 1.92–3, and there were statistically significant differences at the level of ? < . 05 in the level of teaching practices employed attributable to teaching experience in favor of the group with fewer than 10 years’ experience. Based on these results, the study makes several recommendations. Primarily, it proposes that training programs for in-service female mathematics teachers should be strengthened, ensuring they cover the teaching practices necessary to develop mathematical writing skills. Received: 10 May 2023 / Accepted: 22 June 2023 / Published: 5 July 2023
COMPARISON OF CYTOLOGICAL AND HISTOPATHOLOGICAL FINDINGS IN BREAST LESIONS – A TERTIARY CARE CENTER

Introduction: The objective of the study was to compare the findings of cytological and histopathological features of breast lesions. Methods: This study conducted on 109 patients with breast lump with fine needle aspiration cytology (FNAC) followed by histopathology at Department of Pathology, Pacific Institute of Medical Sciences, Umarda, Udaipur, Rajasthan. The study duration is 18-month study period (April 2021 to September 2022). Results: The mean age of the study subjects was 44.20 years with majority of the patients belonged to the age group 41–50 years (36.70%). Out of 109 cases, 84 cases (77.07%) were benign and 23 cases (21.10%) were malignant pathology in FNAC. Rest two cases had intermediate pathology. Majority of histopathological diagnosis of breast lumps in the present study were benign pathology (75.23%) and rest all malignant (24.77%). Conclusion: Our study shows that FNAC can reliably distinguish between benign and malignant conditions and it is a sensitive and specific modality that assist in diagnosis and management of breast lesions. Although FNAC has been found to be a most valuable economic, simple, and safe diagnostic procedure, due to certain pitfall of FNAC like in case of pauci-cellularity blood mixed aspirates and blind technique procedure. Histopathological correlation is always mandatory for early diagnosis and better prognosis.
Internally sourced revenue optimality and national economy development of Nigeria

This study investigated the impact of internally sourced revenue optimality on Nigeria’s national economic development. Internally generated income had traditionally been the mainstay revenue source for the economic development of countries, but it has long been a subject of worry for Nigeria's national economic development, considering how effectively internally generated income is being used for the progress of the country. We adopted an ex-post facto research design, using annual time series data covering a period of 31 years (1992Q1-2022Q4), sourced from the Central Bank of Nigeria Statistical Bulletin and the National Bureau of Statistics. Two variables were considered, the dependent variable of the study (National economic development) proxied with Real Gross Domestic Product (RGPD) and the independent variable (internally sourced revenue) using the total internally sourced revenue that accrued to the federal (FIGR), States and Federal capital territory (SFCTIGR), and Local government (LIGR) as the explanatory variables for the study. The study found that internally sourced revenue positively affects Nigeria’s national economic development and that the period experienced unstable internally generated revenue and weak optimal use of the revenue. The study concluded that internally sourced revenue and optimal utilization of internally sourced revenue affect national economic development. Based on the findings, the study recommended that the Nigerian government should optimally utilize internally sourced revenue to enhance the national economic development of Nigeria.
Effects of artificial local compensation of convective mass flux in the cumulus parameterization

In this study, a hybrid mass flux cumulus scheme (HYMACS) is developed for the Weather Research and Forecasting Model (WRF). Idealized experiments are performed to evaluate its effects on tropical cyclone simulations. Classical cumulus schemes assume artificial local compensation of convective mass flux. In contrast, HYMACS treats subgrid‐scale mass flux convergence or divergence as parameterized mass sources or sinks. When the mass sources or sinks are introduced to the mass continuity equation in a nonhydrostatic fully compressible model, the model dynamics would resolve the mass‐compensating motion, i.e., dynamic compensation of convective mass flux. A hierarchy of experiments is conducted to demonstrate the effects of the artificial local compensation. The results of the mass compensation experiment show that the amplitude of the column mass change with the artificial local compensation is more sensitive to the change of the horizontal resolution between 3 and 27 km than the dynamic compensation. The results of the piggybacking tropical cyclone simulations at 9 km resolution suggest that the artificial local compensation in the Kain‐Fritsch scheme (KF) concentrates vertical exchange of dry static energy and moisture and induces secondary circulation, which could lead to sea level pressure decrease and enhanced precipitation. These results indicate that the artificial local compensation at the gray‐zone resolution could cause significant effects on tropical cyclone dynamics, so it is important to avoid the artificial local compensation for cumulus parameterization at such resolution.
Dysphagia After Prolonged Intubation in SARS-CoV-19 Patients: A Single Institution Retrospective Review

Objective: To determine the impact of various factors on swallowing in SARS-CoV-19 patients after prolonged intubation. Methods: A retrospective chart review of SARS-CoV-19 patients intubated between February 2020 and March 2021 was performed. Independent variables, including duration and factors of intubation, and patient demographic characteristics were analyzed. Formal swallow studies were performed for patients who failed a screening swallow evaluation. Results: Seventy-three individuals of 308 patients reviewed had a dysphagia score of ≤5. A total of 49% of patients’ dysphagia resolved prior to discharge, with a median of eight days between extubation and the last evaluation. The median duration of intubation was 11 days. Increasing age, congestive heart failure, cerebrovascular disease, and hypertension were associated with dysphagia at the first and/or last evaluation. Hispanic ethnicity was associated with a decreased risk of dysphagia (all p<0.05). Conclusions: Although various patient factors including age and congestive heart failure were associated with the development of dysphagia after prolonged intubation, the length of intubation was not.
Reflection of plane waves from the boundary of an initially stressed incompressible half-space

In this paper, nonlinear theory of elasticity is used to study the effect of initial stress on plane waves in an incompressible material. For this problem, the initial stress is not associated with a finite elastic deformation and the material is assumed to be isotropic in the absence of the initial stress. The theory of superposition of infinitesimal deformations on finite deformation is applied to a problem of plane incremental motions in an initially stressed incompressible homogeneous elastic half-space. The general formulation of the problem is presented first and then specialized using a prototype strain energy function. Homogeneous plane waves are considered and the analysis is carried out for incompressible materials in both the deformed and the undeformed reference configurations. In addition to this, problems for the reflection of small amplitude homogeneous waves from the plane boundary of an initially stressed half-space are also considered and graphical results are included, which show the effect of initial stress on reflection. It is noted that the reflection coefficients in this case behave in a similar fashion when the initial stress is a pre-stress.