Miracle-dz/UniFAR-FTUs huggingface dataset:
CLASP/SJ Observations of Rapid Time Variations in the Lyα Emission in a Solar Active Region

The Chromospheric Lyα SpectroPolarimeter (CLASP) is a sounding rocket experiment launched on 2015 September 3 to investigate the solar chromosphere and transition region. The slit-jaw (SJ) optical system captured Lyα images with a high time cadence of 0.6 s. From the CLASP/SJ observations, many variations in the solar chromosphere and transition region emission with a timescale of <1 minute were discovered. In this paper, we focus on the active region within the SJ field of view and investigate the relationship between short (<30 s) temporal variations in the Lyα emission and the coronal structures observed by Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA). We compare the Lyα temporal variations at the coronal loop footpoints observed in the AIA 211 Å (≈2 MK) and AIA 171 Å (≈0.6 MK) channels with those in the regions with bright Lyα features without a clear association with the coronal loop footpoints. We find more short (<30 s) temporal variations in the Lyα intensity in the footpoint regions. Those variations did not depend on the temperature of the coronal loops. Therefore, the temporal variations in the Lyα intensity at this timescale range could be related to the heating of the coronal structures up to temperatures around the sensitivity peak of 171 Å. No signature was found to support the scenario that these Lyα intensity variations were related to the nanoflares. Waves or jets from the lower layers (lower chromosphere or photosphere) are possible causes for this phenomenon.
Sobre los espacios asociados a primitivas de distribuciones en espacios de Hardy laterales

En esta tesis introducimos los espacios Ή(p,+)(q,α)(ω), donde 0 0 y para pesos ω pertenecientes a alguna de las clases As+ definidas por E. Sawyer. Para definir estos espacios, consideramos una version lateral de la maximal Nq,α(F,x) definida por [. ]
Radiation Damage Effects in Space-borne CCD Detectors Operated in TDI Mode

We evaluate the astrometric and photometric implications of a series of laboratory tests conducted to study the effects of radiation damage caused by solar protons in space-borne charge coupled devices (CCDs). The photometric effects, i.e., charge loss (CL) and the astrometric effects, i.e., location biases, associated with the radiation-induced distortion on the sampled line spread function (LSF), are assessed via a Gaussian fitting model. Data reduction is supported by a detailed analysis of the experimental setup. Charge loss and centroid shift variations are evaluated as functions of the simulated star brightness and the level of diffuse optical background to derive useful hints for modeling and calibration of the radiation damaged LSF during actual payload operations in orbit.
An algebraic characterisation of staged trees : their geometry and causal implications

This dissertation develops the mathematical formalism to analyse now established staged tree models which are graphical, discrete and parametric statistical models. We investigate the properties of these models in three important settings: geometrically, specifying these as algebraic varieties inside a probability simplex; statistically, characterising the class of all graphical representations of the same family of probability distributions; and philosophically, formulating putative causal hypotheses inferred from a class of staged trees.
Predicting Zonal Flows - The Reynolds-stress response functional for large-scale flows generated by turbulence in magnetized plasmas

Turbulence driven zonal flows play an important role in fusion devices since they improve plasma confinement by limiting the level of anomalous transport. Contemporary theories mostly focus on flow excitation but do not self-consistently describe the nearly stationary zonal flow turbulence equilibrium state. First principles plasma-turbulence two-fluid studies are used to examine the zonal flow properties and to construct a response functional for the deterministic contribution of the parallel and perpendicular Reynolds stress that govern the zonal flow evolution. The functional allows the prediction of zonal flows and permits a reliable charting of zonal flow turbulence equilibria.
Association Between Self-Rated Health and Medical Care Disruption Due to COVID-19 Among Individuals With Atherosclerotic Cardiovascular Disease

Background: The coronavirus disease 2019 (COVID-19) pandemic has disrupted medical care across diverse populations with varying outcomes. In this study, we evaluated the relationship between health rating and disruption in medical care due to COVID-19 among individuals with atherosclerotic cardiovascular disease (ASCVD). Methods: Data from the 2020 National Health Interview Survey was used for this study. ASCVD sample included those with self-reported coronary heart disease, stroke, and heart attack. Health rating was represented as fair to poor, good, and very good to excellent. The outcome variable was a disruption of medical care due to COVID-19 (delay in medical care or did not get care). The chi-square test was used for the descriptive analysis and multiple logistic regression was used to evaluate the relationship between health rating and disruption in medical care with demographic factors, comorbidities, and cumulative social risk adjusted for. Results: Among the 31,568 adults, 1,707/31,568 representing 9,385,855 adults 18 years and above with ASCVD reported experiencing or not experiencing a disruption in medical care. After adjusting for cumulative risk, the odds of not getting medical care due to COVID-19 were high for those who rated their health as fair/poor as compared to excellent (adjusted odds ratio (AOR) = 1.95, 95% CI = 1.24-3.08, p = 0.004). These odds remained about the same after adjusting for cumulative social risk, demographic factors, and comorbidities (AOR = 1.84, 95% CI = 1.11-3.06, p = 0.018). After adjusting for cumulative risk, medical care utilization (received, delayed, did not receive) was rated. Those who rated their health as fair to poor as compared to excellent were more likely to report a delay in health care due to COVID-19 (AOR = 1.85, 95% CI = 1.28-2.68, p = 0.001) and remained about the same after adjusting for cumulative social risk, demographic factors, and comorbidities (AOR = 1.86, 95% CI = 1.22-2.82, p = 0.004). Female respondents with ASCVD who rated their health as fair/poor were more likely to experience a delay in medical care due to COVID-19 (AOR = 2.06, 95% CI = 1.06-4.01, p = 0.033) or not get medical care due to COVID-19 (AOR = 2.86, 95% CI = 1.42-5.76, p = 0.003) as compared to those who rated their health as excellent. With regards to men with ASCVD, health rating was not related to their reported disruption of medical care due to COVID-19. Conclusions: A poor to fair health rating is associated with a delay in getting or not getting medical care among individuals with ASCVD. Further studies are needed to evaluate this relationship further.
Stress Is Associated with Quality of Life Reduction among Health Professionals in Vietnam: A Multisite Survey

Stress in healthcare workers is increasingly common in recent times. Stress can have negative effects on the mental health and quality of life of healthcare workers. This study is aimed at measuring the quality of life and determining the relationship between quality of life and stress of health professionals in some hospitals in Vietnam. A cross-sectional descriptive study was conducted on 520 health professionals working at Hanoi Medical University Hospital and Thai Binh Medical University Hospital. The World Health Organization Quality-of-Life Scale (WHOQOL-BREF) and the Depression, Anxiety, and Stress Scale-21 Items (DASS-21) scale were used to assess the quality of life and the stress status of healthcare workers. Multivariate regression was performed to measure the relationships between stress and quality of life. Results showed that the level of stress of health workers according to the DASS-21 scale at mild, moderate, severe, and very severe was 10.7%, 8.7%, 5.6%, and 2.9%, respectively. The mean score of overall quality of life was 60.97 ± 11.39 . Health workers under stress had a decrease in quality of life scores in physical, mental, social, and environmental domains. Stressed health workers had a reduced quality of life. Attention should be paid to providing appropriate interventions to reduce stress and improve the quality of life in healthcare workers.
Effects of intermediary reservoir in a two-stage impedance pump

Impedance pump is a simple valve-less pumping mechanism, which transport fluid through the mismatch of impedance in the system. A typical open-loop impedance pump consists of an elastic tube, connected to rigid tubing, where the rigid section is connected to a reservoir. Mismatch in impedance occurs when an asymmetrical periodic excitation is exerted on the elastic tube. Studies showed that sequential excitations on the elastic tube infers higher volumetric efficiency than a single excitation. This work studies the effects of an intermediary reservoir between two excitation points on an elastic tube. This study aims to shed some light on the steady state response and fluid motion within the intermediary reservoir; in which increased volumetric efficiency is demonstrated.
Comparison of analytical parametric models and measured data dependent models for EO system performance prediction

Electro-Optical (EO) system performance prediction requires physically validated system models, atmosphere/clutter models, and target signature models. These models in general include radiometric equations and measured data. The main model of such a performance prediction simulation is EO model. EO model’s subsystem models are optical system and detector system models. One approach for EO modeling is parametric model approach which is constructed via solving radiometric equations by using optics and detector model parameters. The other approach is to use the measured system data in order to simulate the systems. The measurement includes system temporal/spatial noise, intensity response, and spatial response. In this paper, these two methods are compared via measurements collected with a generic electro-optical camera. The results show that the measured data methodology is reliable for a system simulation, whereas parametric model approach can be reliable provided that the parameters are correctly defined in their physical boundaries.
The Effect of Different Precursor Solutions on the Structural, Morphological, and Optical Properties of Nickel Oxide as an Efficient Hole Transport Layer for Perovskite Solar Cells

Perovskite solar cell (PSC) technologies have recently become a popular research topic. The hole transport layers (HTL) are important in establishing stable and efficient PSC by regulating charge absorption, interlayer recombination losses, and band alignment. Spiro-OMeTAD was extensively used as the HTL to fabricate highly efficient PSCs. Despite Spiro-OMeTAD having the benefit of providing high PCEs, it is costly, hazardous to the ecology, and cannot provide high efficiencies in the lack of additional additives that can reduce their stabilities. Inorganic HTL, specifically nickel oxide (NiO), has garnered much interest due to its low-cost, enhanced mobility, and strong stability to attain high efficiency. This study investigated different precursor solutions of NiO synthesis (Method I, II, and III) and deposited using the spin coating approach. The films were annealed at different annealing temperatures (400°C, 550°C, and 700°C) and evaluated by X-ray powder diffraction (XRD), UV-Vis spectroscopy, and Scanning electron microscopy (SEM) to test their structural, morphological, and optical characteristics, respectively. The findings of XRD revealed that a higher annealing temperature increases the crystallite size and decreases the microstrain through the study from Scherrer’s and Williamson-Hall’s (WH) equations. From the SEM analysis, the films show uniformity, large crystals, and agglomeration of particles. The annealing temperature from 400°C to 700°C reduced bandgap energy from 3.6 eV to 2.1 eV. According to the result, NiO produced at an annealing temperature of 700°C (Method I) exhibited the best characteristics and might be a viable option for HTL in PSCs.
Prophylactic use of temporary uterine packing combined with topical tranexamic acid reduces blood loss and transfusion requirements in patients undergoing cesarean section: A double-blind, randomized controlled trial

Background: since antiquity post-partum haemorrhage (PPH) has been a terrible event for obstetricians. It accounts for 34% of maternal deaths in Africa and developed countries. It complicates 6% of cesarean delivery (CD) and still raising and correlates with increased frequency of caesarean sections, many uterotonic agents have successfully used alone or in combinations for prevention of such catastrophic, but the most effective medication is still up for controversy. Objective: To compare the efficacy and safety of temporary uterine packing combined with topical tranexamic acid (TA) as adjunct for reducing blood loss following an elective cesarean delivery with intravenous tranexamic acid and placebo in women who have at least one risk factor for postpartum hemorrhage. Patients and methods: A double-blind, randomized clinical trial (: NCT03706339) conducted on 450 pregnant women at term (38 – 40 weeks) gestation scheduled for elective cesarean delivery, who were assigned to either intravenous TA, topical TA, or placebo(saline). The main outcome measures were blood loss at and 6 hours after cesarean delivery, the need for any additional oxytoxic drugs, and TA-related side effects. Results: There was a significant decrease in the intraoperative blood loss and total blood loss in both topical TA and IV TA groups compared to placebo group (p=0.0001,0.0001,0.0001,0.0001). Also, the need to extra uterotonics was significant decrease in IV TA group, 9 (6%) patients compared to 33 (22%) patients in placebo group, and 24 (16%) patients in topical TA group, (p=0.0001 and 0.006) respectively. Finally, operative time, hospital stay, postoperative hemoglobin, and post-operative complication showed no significant difference between the three groups (P= 0.276, 0.126, 0.853, 0.955, 1.00, 1.00) respectively. Conclusion: IV TA and temporary uterine packing combined with topical tranexamic acid is more effective than placebo in reducing total blood loss during and after cesarean delivery in women who have at least one risk factor for postpartum hemorrhage, but IV TA more effective.
The interaction between rotationally oscillating spheres and solid boundaries in a Stokes flow

We present the results of an experimental and theoretical investigation into the influence of proximate boundaries on the motion of an rotationally oscillating sphere in a viscous fluid. The angular oscillations of the sphere are controlled using the magnetic torque generated by a spatially uniform, oscillatory magnetic field which interacts with a small magnet embedded within the sphere. We study the motion of the sphere in the vicinity of stationary walls that are parallel and perpendicular to the rotational axis of the sphere, and near a second passive sphere that is non-magnetic and free to move. We find that rigid boundaries introduce viscous resistance to motion that acts to suppress the oscillations of the driven sphere. The amount of viscous resistance depends on the orientation of the wall with respect to the axis of rotation of the oscillating sphere. A passive sphere also introduces viscous resistance to motion, but for this case the rotational oscillations of the active sphere establish a standing wave that imparts vorticity to the fluid and induces oscillations of the passive sphere. The standing wave is analogous to the case of an oscillating plate in a viscous fluid; the amplitude of the wave decays exponentially with radial distance from the surface of the oscillating sphere. The standing wave introduces a phase lag between the motion of the active sphere and the response of the passive sphere which increases linearly with separation distance.
Integrated Port Time Control for Shipping Companies

As the busiest port in Indonesia, Tanjung Priok port has a hard time to achieve the target to maximize ship utility through operational cost savings. The purpose of this study is to determine the factors affecting Integrated Port Time (IPT) in order to reduce the shipping companies operating costs in Tanjung Priok Port, Jakarta. Controllable and uncontrollable IPT is influenced by five variables which are the availability of the docks, the shipping lane conditions, the document services, the guidance services, and the loading-unloading productivity. This study focuses on the factors that affect IPT in domestic area of Terminal 3 Tanjung Priok Port Jakarta in particular. It is related to how IPT could contribute to the efficiency of national companies operations in general if the duration is shortened. This study used Path Analysis method with a total sample of 70 people from the operational team and the crew of Temas shipping company. The results of the study prove that five variables mentioned have a positive and significant impact altogether on IPT of the ships operated by Temas shipping company in Tanjung Priok port in Jakarta. The findings are expected to be useful to cut down Temas shipping company’s operational cost and increase the ships utility.
THE IMPLEMENTATION OF GOOGLE CLASSROOM TO TEACH READING NARRATIVE TEXT

This paper reports the investigation of Google Classroom (GC) implementation to teach reading of narrative text to students of Vocational High School. It was purposed to find out teacher’s strategy to implement GC to teach reading of the narrative text, students’ perception to the implementation of GC teaching reading of the narrative text, and teacher’s perception of the implementation of GC to teach reading of the narrative text. This study used qualitative research under case study approach to take data from participants. In this case, the participants were the tenth grade and an English teacher. Furthermore, observations, questionnaires, and interviews were media to collect the data. The results showed that the teacher used Google Classroom as a medium to share assignments and learning material that should be studied by the students. During the learning process was occurred, the teacher and students only need to open the learning material in their smartphone and discussed it together through questioning activities. Then, related to how the teacher taught reading to his students, the teacher applied several reading techniques. Furthermore, most of the students gave quite positive responses to Google Classroom. They agreed that by implementing Google Classroom as a learning medium, learning activities became more structured and enjoyable. Then, the teacher perceived this application helpful. He mentioned that this application made him easy to manage his class.Keywords: MALL, Google Classroom. Reading, Narrative text.
Relationships Between Morphological Characteristics of Roosters in Broiler Breeders at Different Age Periods

The aim of study was to determine the relationships between morphological characteristics of roosters and fertility in broiler breeders at different age periods. A total of 48 roosters and 480 hens Ross 308 broiler breeder were used. The body weight, comb width and length, wattle width and length, and tarsus length of roosters were measured for morphological characteristics at 42, and 53 weeks of age. A total of 1500 eggs were incubated at 37.7 °C and 50-55% relative humidity for 18 d, then eggs were incubated at 36.6 °C and 60% relative humidity for 3 d. The effect of age on comb length, comb index (P=0.002), wattle width (P=0.008), wattle area (P=0.015) and tarsus length were found significant (P=0.000). There were correlations between body weight and fertility at 53 weeks of age (r = 0.663; P<0.05). There was no correlation between fertility and comb length, comb width, comb area, comb index, wattle width, wattle area, wattle index, and tarsus length at 42 and 53 weeks of age (P>0.05). In conclusion; some characteristics based on external appearance are used for male selection in broiler breeders, but no relationship was found between investigated morphological characteristics and fertility, except for body weight.
Far infrared assisted refractance window drying: Influence on drying characteristics and quality of banana leather

Abstract The market demand for fruit-based healthy snacks in dried form is increasing rapidly. Novel and efficient drying techniques are being explored to meet market demand of fruit-based snacks with better nutritive value and sensorial attributes. In this study, suitability of far infrared assisted refractance window (FIR + RW) drying to obtain banana leather was ascertained and drying behavior, bioactives, flavor, microstructure, and sensory attributes were compared with RW and hot air (HA) drying. FIR + RW and RW reduced the drying time by 60–75% and energy consumption by 38–45% as compared to HA. RW drying preserved color and retained higher phenolics (19%), ascorbic acid (22%) and antioxidant capacity (16–47%) compared to HA. Among the studied methods, HA resulted in higher browning index and hydroxymethylfurfural content. FIR + RW and RW dried banana samples had maximum flavor compounds, better overall consumer acceptance and improved cellular structure with widened pores. The study indicated that RW and FIR + RW have good potential to be considered as alternative drying techniques to HA for producing high-quality fruit leather.