Miracle-dz/UniFAR-FTUs huggingface dataset:
Morphology Control of Organic–Inorganic Bismuth‐Based Perovskites for Solar Cell Application

Recently, Pb‐based organometal halide perovskite solar cells have passed 20% power conversion efficiency (PCE). However, the main issue hampering commercialization is toxic Pb contained in these cells. Therefore, great attention is devoted to replace Pb by less harmful metals such as Bi. Yet, the most efficient methylammonium bismuth iodide (MBI) perovskite solar cells reported in literature reach PCE up to 0.2%. In this work, MBI perovskite solar cells, which are processed by spin‐coating under inert nitrogen atmosphere, employing a standard non‐inverted stack are presented. The control of perovskite morphology by modifying the process has been highlighted and the impact on photovoltaic (PV) characteristics has been shown. It is observed that the concentration of the perovskite solution (0.15–0.30 M) has a huge impact on the crystallite size, and the rotation speed during the spin‐coating process determines the layer coverage. Exposure of MBI solar cells to ambient air is found to be essential to obtain the highest short‐circuit current and open‐circuit voltage. The PCE increases over time, from 0.004% directly after processing up to 0.17% after 48 h. The fabricated cells exhibit an open‐circuit voltage of 0.72 V, which is the highest value published for this type of solar cell.
Impact of Global Energy Index and Crude Oil & Coal Price to Indonesia Stock Indices

Oil prices have stagnated from 2015 to early 2020. After the crisis caused by Covid-19, oil prices slowly increased and even reached their highest point in the last 10 years in mid-2022. Coal prices reached an all-time high at the end of 2021 before then increasing again in early 2022. The significant increase in coal and oil prices was triggered by the war between Russia and Ukraine. The embargo on Russian oil and coal has contributed to the decline in coal and oil stocks as fuel for power plants in Europe. This research determines the impact of the volatility of oil prices, coal prices, and global energy price index on the stock price index in Indonesia. Does global energy price index, which consists of crude oil and coal prices affect Indonesia stock indices more precisely. This study show volatility of oil prices and coal prices affects company stock prices in Europe. The analysis examined Jakarta Composite Index, LQ45 Index, Jakarta Islamic Index, and Sectoral Index for the 2018-2022 periods. Several techniques, including ordinary least square, linear regression, and multiple regression. The increases of the oil prices, coal prices, and global energy indices affect the stock price index in Indonesia. The study will help investor to understand the impact of oil, coal price volatility and global energy index to several Indonesia stock indices.
Assessment of Bacterial Aerosol in a Preschool, Primary School and High School in Poland

The issue of healthy educational buildings is a global concern because children are particularly at risk of lung damage and infection caused by poor indoor air quality (IAQ). This article presents the results of a preliminary study of the concentration and size distribution of bacterial aerosol in three educational buildings: a preschool, primary school, and high school. Sampling was undertaken in the classrooms with an Andersen six-stage impactor (with aerodynamic cut-off diameters of 7.0, 4.7, 3.3, 2.1, 1.1 and 0.65 μm) during spring 2016 and 2017, as well as the outside of the buildings. After incubation, bioaerosol particles captured on nutrient media on Petri dishes were quantitatively evaluated and qualitatively identified. The highest average concentration of bacterial aerosol was inside the primary school building (2205 CFU/m3), whereas the lowest average concentration of indoor culturable bacteria was observed in the high school building (391 CFU/m3). Using the obtained data, the exposure dose (ED) of the bacterial aerosol was estimated for children attending each educational level. The most frequently occurring species in the sampled bacterial aerosol were Gram-positive cocci in the indoor environment and Gram-positive rod-forming endospores in the outdoor environment.
Mathematics and Statistics The relative canonical algebra of a fibred surface

The object of the thesis is the study of some slope properties of fibred surfaces. A fibred surface is a surjective morphism f between an algebraic surface S and a smooth algebraic curve B. In particular we are interested in the geography of fibred surfaces, which is, roughly speaking, the study of the ranges in which their numerical invariants can vary. The object of the thesis is the study of some slope properties of fibred surfaces. A fibred surface is a surjective morphism f between an algebraic surface S and a smooth algebraic curve B. In particular we are interested in the geography of fibred surfaces, which is, roughly speaking, the study of the ranges in which their numerical invariants can vary. The fundamental invariants associated to the fibration are 1. the self-intersection K 2 f of the relative canonical divisor. (2)
Rotating machinery fault diagnosis using dimension expansion and AntisymNet lightweight convolutional neural network

Deep learning-based methods have made remarkable progress in the field of fault diagnosis for rotating machinery. However, convolutional neural networks are not suitable for industrial applications due to their large model size and high computational complexity. To address this limitation, this paper proposes the Antisym module and constructs AntisymNet, which is combined with dimension expansion algorithms for fault diagnosis of rotating machinery. To begin with, the original vibration signal of the rolling machinery is subjected to time-frequency transformations using the discrete Fourier transform and discrete wavelet transform. Subsequently, each transformed time-frequency signal is expanded in dimensions, resulting in two-dimensional matrix single channel images. These single channel images are then fused into RGB images to enhance the sample features. Finally, the proposed AntisymNet is utilized for recognizing and classifying the expanded signals. To evaluate the performance of AntisymNet, the MiniImageNet image dataset is employed as a benchmark, and a comparison is made with other state-of-the-art lightweight convolutional neural networks. Additionally, the effectiveness of the proposed fault diagnosis model is validated using the CWRU bearing dataset, Ottawa bearing dataset, and the hob dataset. The model achieves an impressive accuracy rate of 99.70% in the CWRU dataset, 99.26% in the Ottawa dataset, and an error rate of only 0.66% in the hob dataset. These results demonstrate the strong performance of the proposed fault diagnosis model.
Driver head pose tracking with thermal camera

Head pose can be seen as a coarse estimation of gaze direction. In automotive industry, knowledge about gaze direction could optimize Human-Machine Interface (HMI) and Advanced Driver Assistance Systems (ADAS). Pose estimation systems are often based on camera when applications have to be contactless. In this paper, we explore uncooled thermal imagery (8-14μm) for its intrinsic night vision capabilities and for its invariance versus lighting variations. Two methods are implemented and compared, both are aided by a 3D model of the head. The 3D model, mapped with thermal texture, allows to synthesize a base of 2D projected models, differently oriented and labeled in yaw and pitch. The first method is based on keypoints. Keypoints of models are matched with those of the query image. These sets of matchings, aided with the 3D shape of the model, allow to estimate 3D pose. The second method is a global appearance approach. Among all 2D models of the base, algorithm searches the one which is the closest to the query image thanks to a weighted least squares difference.
Sensitivity of the Simulated Tropical Cyclone Intensification to the Boundary‐Layer Height Based on a K‐Profile Boundary‐Layer Parameterization Scheme

The sensitivity of simulated tropical cyclone intensification to the boundary‐layer height is investigated in this study, using the Yonsei University (YSU) scheme to parameterize boundary‐layer processes. Results reveal nonlinear effects of the boundary‐layer height on the intensification of simulated tropical cyclones. For shallow boundary layer (e.g., below 1,000 m), the storm intensification is sensitive to the depth of the boundary layer; decreasing the boundary‐layer height would lead to a progressive increase in the intensification. For deep boundary layer, the storm intensification is weakly affected by the boundary‐layer height. The roles of unbalanced processes are primarily responsible for these discrepancies. The frictional dissipation is confined in a relatively thin layer for shallow boundary layer, and decreasing the boundary‐layer height causes a larger extent of gradient wind imbalance and stronger radial inflow in the boundary layer. As a consequence, the unbalanced flow effects are more pronounced and contribute to a more rapidly intensifying tropical cyclone. The vertical mixing is intense in a deep boundary layer, resulting in weak unbalanced processes; therefore, further enhancing the boundary‐layer height has less appreciable influence on the tropical cyclone intensification than that in a shallow boundary layer. Increasing the boundary‐layer height has also consequences of drying and warming the lower part of the boundary layer while moistening and cooling the atmosphere aloft, which may be favorable for encouraging outer‐core convection activities. These results underscore the importance of accurately estimating the boundary‐layer height in a K‐profile boundary‐layer scheme for tropical cyclone simulations.
Severity Analysis of Macular Edema using Random Tree Classifier

Macular edema ensues when there is abnormal pile-up of fluid and results in swelling of the macula part of the retina. It is commonly associated with diabetes. It can be diagnosed by identifying exudates in the retinal images. In the proposed work, macular the retinal image is pre-processed, enhanced and segmented using morphological operations. The optic disc and macula are segmented. Various statistical features are extracted. Optimal features are selected using Haar wavelets. The selected features are classified using Random tree classifier to detect the severity of the disease in to three stages namely, normal, mild and critical. The accuracy obtained is 98.4%.
Optimization of Total Carotenoid Production by Rhodotorula mucilaginosa from Artichoke Agroindustrial Waste Using Response Surface Methodology

The carotenoids have vast medical, industrial, dietary, and pharmaceutical importance due to their provitamin A precursor, immunomodulator, antioxidant and photoprotective activity. The purpose of the research was to optimize the production of carotenoids using Rhodotorula mucilaginosa from artichoke agroindustrial waste as a low-cost substrate. The artichokes bracts waste was bleached by sodium hypochlorite (NaClO 2%) and was characterized through whiteness index and FTIR. The bleached artichoke waste (BABW) used in the fermentation went through acid hydrolysis, applying 8% of the bleached artichokes residue and sulfuric acid (2.5%) for 1 h at 90°C, obtaining a greater reduced sugars content at 3.1 g/L. Rhodotorula mucilaginosa was isolated and molecularly identified. The production of carotenoids from a culture media based on hydrolyzed BABW, peptone (0.5%), yeast extract (0.1%) and sodium chloride (0.5%) was evaluated at different conditions of pH (5–8) and agitation speed (80–160 rpm) applying the surface response methodology by a rotational central compound design. The best carotenoids performance obtained had 2968.95 µg/L VVC and 1228.53 µg/g TFC at pH 5, 120 rpm and 30°C for 72 h. The chemical characterization of the extracted carotenoids was confirmed by UV-VIS and Raman spectroscopy methods. The results suggest that Rhodotorula mucilaginosa is capable of producing carotenoids from artichoke waste fermentation, providing a low-cost and sustainable alternative route for use in the global market.
Approximate Solution to the Spray Heat Transfer Problem at High Surface Temperatures and Liquid Mass Fluxes

ABSTRACT A basic energy balance that includes phase change has been used to describe the boiling heat transfer process. By using the differential form of this energy balance, the relative change in the heat transfer coefficient can be determined when the surface and coolant temperature change. This represents a general solution to the boiling heat transfer problem under high flux conditions where fully mixed thermal boundary layer exists, although the solution procedure is approximate. The results agree quite well with experimental data. Further work remains to prescribe the heat transfer process near the critical heat flux and Leidenfrost point. This approach vastly reduces the empiricism and data required for boiling heat transfer processes, and also existing data can be used to generalize to a wide range of conditions.
Noncentral multivariate dirichlet distributions

This distribution could also be called a Dirichlet distribution. Because (1) reduces to the Beta Type 1 distribution and (2) reduces to the Beta Type 2 distribution we shall call the first a Dirichlet Type 1 distribution D1 (i? ½m1,.,i? ½mk;i? ½n) and the second a Dirichlet Type 2 distribution D2 (i? ½m1,.,i? ½mk;i? ½n).
We need to talk about self-care (but not in the way you think)

Self-care is widely acknowledged as crucial in the social work profession. While this area of research has begun to expand in recent decades, there is still much to be explored. Most studies in this field cover issues like the types and frequency of self-care engaged in, howto teach it, and how it relates to the prevention of issues like burnout. This research brief will review the literature surrounding these important matters, highlighting a gap pertaining to the practical understanding and application of self-care. How do social workers and social work students think and feel about self-care and the way it is currently taught? Do they know how often most of their peers engage in self-care? Do they know how to realistically incorporate self-care into their own lives? This research brief will discuss what is currently known about the answers to these questions, culminating in suggestions for future research and recommendations that will give future social workers realistic expectations and tools with which to enter the field.
Formation of dipolarization fronts after current sheet thinning

Dipolarization front (DF)—a sharp boundary separating hot tenuous plasmas from cold dense plasmas—is a key structure responsible for particle acceleration and energy transport in the magnetotail. How such a structure is formed has been unclear so far. Two possible mechanisms suggested in previous studies are magnetic reconnection and spontaneous formation. Both of them require current sheet thinning as a prerequisite. However, observational evidence of the DF formation associated with current sheet thinning has not been reported. In this study, we present such an observation, showing the DF formation after current sheet thinning. We estimate the half thickness of the current sheet to be ∼1000 km and the rate of current sheet thinning as ∼38 km/s. We find that the DF is likely formed at XGSM ≈ −20 RE. During the current sheet thinning, the plasma becomes cold and dense; during DF formation, many magnetic islands are produced. Although current sheet thinning and DF formation have been individually analyzed in the previous studies, this study, for the first time, links the two transient processes in the magnetotail.Dipolarization front (DF)—a sharp boundary separating hot tenuous plasmas from cold dense plasmas—is a key structure responsible for particle acceleration and energy transport in the magnetotail. How such a structure is formed has been unclear so far. Two possible mechanisms suggested in previous studies are magnetic reconnection and spontaneous formation. Both of them require current sheet thinning as a prerequisite. However, observational evidence of the DF formation associated with current sheet thinning has not been reported. In this study, we present such an observation, showing the DF formation after current sheet thinning. We estimate the half thickness of the current sheet to be ∼1000 km and the rate of current sheet thinning as ∼38 km/s. We find that the DF is likely formed at XGSM ≈ −20 RE. During the current sheet thinning, the plasma becomes cold and dense; during DF formation, many magnetic islands are produced. Although current sheet thinning and DF formation have been individually analyzed .
Characterization of micro-scale residual stress around thermal grown oxide using micro-slotting method and geometric phase analysis

Characterization of residual stress around thermal grown oxide (TGO) is important for understanding the spallation failure of thermal barrier coatings (TBCs). Cr3+ photoluminescence piezo-spectroscopy (CPLPS) is a nondestructive method for measuring the in-plane residual stress in the TGO layer. However, using CPLPS it is hard to evaluate the out-of-plane residual stress around TGO. Here, we adopted the micro-slotting method combined with geometric phase analysis (GPA) for measuring the in-plane and out-of-plane stresses around TGO, with measured areas of 6 × 4 µm2. In the experiment, a grating and a slot were milled on the specimen surface using focused ion beam, and GPA was applied to analyze the grating structure before and after the slot milling for calculating the released displacement field. Then finite element analysis was used to infer the residual stress in the direction vertical to the micro-slot. Two experiments were performed on the in-service TBC specimen. The first experiment presented the in-plane compression in the TGO, while the second experiment presented the out-of-plane tension at the crest of the TGO/BC interface, thus validating the theoretical analysis.
How to live longer: lived experience of older adults in Thailand

Introduction: Thai population data across the country found that the number of older adults who were aged over 80 years old increased. The researcher was interested in caring of older adults following the context of lifestyle, detail of self care, and social support which make older people live longer than the average life expectancy. The nurses can use obtain information to appropriate health promotion for adults who are becoming older adults. It makes people to good quality of life when they are older and life longevity. Methods: This qualitative research has a purposive sampling method that was used to select ten participants who were aged 80 years and above and from five villages, the inclusion criteria was who can communicate in Thai language and agreed to participate in this research project. An in depth interview using open ended questionnaire were conducted to explore the factors leading to longevity among older people. Results: This study revealed four themes related to longevity in older adults as follows: food type choices, exercise as part of daily life, reduction of stress options, and dealing with illness. Conclusion: The relatives and healthcare providers of older adults should support them to eat healthy food, do regular exercises, volunteer in activities that help society, regularly meditate to calm the mind, and have fast access to health system services. Keywords: food type choices, exercise as part of daily life, reduction of stress options, dealing with illness, Life long
His Bundle Pacing: State of the Art

Cardiac pacing has evolved considerably over the years from its initial introduction as a lifesaving measure by asynchronous ventricular pacing. Pitfalls of ventricular-only pacing were recognized relatively early, which led to the introduction of atrioventricular (AV) synchronous pacing that was subjected to rigorous clinical studies. A meta-analysis of major pacing mode trials revealed that AV synchronous pacing, either through atrial pacing (AAI) or dual-chamber pacing (DDD), compared with ventricular pacing (VVI) reduces the incidence of AF and stroke, but not heart failure hospitalization or mortality, even though some individual studies have shown a significant benefit of physiological pacing with respect to overall mortality and heart failure. However, persistent right ventricular apical (RVA) pacing can be associated with ventricular dyssynchrony and left ventricular adverse remodeling. Results of the Mode Selection Trial (MOST) showed that >40 % of DDD and >80 % of VVI were associated with increased risk of heart failure hospitalizations, and that risk of AF increased linearly with cumulative percentage ventricular pacing. Results of the Dual-Chamber and VVI Implantable Defibrillator (DAVID) trial showed that >40 % of VVI is independently predictive of heart failure hospitalization and death.
THE INFLUENCE OF TEACHER PERCEPTIONS OF THE NATIONAL ASSESSMENT AND UTILIZATION OF INSTRUCTIONAL MEDIA ON THE QUALITY OF HIGH SCHOOL LEARNING

Changes to the assessment system with the abolition of the UN (National Examination) and the implementation of the AN (National Assessment) elicited mixed reactions from teachers. AN is not a determinant of graduation but a school quality assessment program. It is necessary to study teachers' perceptions of AN and how these perceptions influence teachers' use of supportive learning media in improving the quality of learning. This study aims to determine the effect of teachers' perceptions of AN and instructional media on the quality of learning in senior high schools in South Aceh District. Quantitative research with a survey research design was carried out using a questionnaire sheet as a research instrument. Data analysis used inferential statistics, namely, linear regression and descriptive statistics, namely, the ideal assessment category. The results show that there is a significant influence between teachers' perceptions of AN and the use of instructional media on the quality of learning. Abstrak.Perubahan sistem asesmen dengan penghapusan UN (Ujian Nasional) dan penerapan AN (Asesmen Nasional) menimbulkan reaksi yang beragam dari kalangan guru. AN bukanlah penentu kelulusan namun program penilaian mutu sekolah. Kajian tentang persepsi guru terhadap AN dan bagaimana persepsi tersebut memengaruhi guru memanfaatkan media pembelajaran yang mendukung dalam peningkatan kualitas pembelajaran perlu dilakukan. Penelitian ini bertujuan untuk menganalisis pengaruh persepsi guru terhadap AN dan pemanfaatan media pembelajaran terhadap kualitas pembelajaran SMA di Kabupaten Aceh Selatan. Penelitian kuantitatif dengan desain penelitian survei dilakukan dengan menggunakan lembar angket sebagai instrumen penelitian. Analisis data menggunakan statistik inferensial yaitu regresi linear dan statistik deskriptif yaitu kategori penilaian ideal. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan antara persepsi guru terhadap AN dan pemanfaatan media pembelajaran terhadap kualitas pembelajaran.