Miracle-dz/UniFAR-FTUs huggingface dataset:
The Determinants of Consumer Purchasing Decisions of Health Food Products: An Empirical Study from Indonesia

The COVID-19 pandemic struck several countries in 2020. After the government officially announced that individuals will be working from home, shut public service agencies, and compelled people to wear masks and maintain social distance, several hundred business actors were forced to shut down their firms. The purpose of this study is to help companies determine the steps for a new marketing strategy for healthy food products in Indonesia. The number of samples was 500 respondents. The variance-based Structural Equation Modeling (SEM) method was used to conduct this investigation, which was similar to a marketing study. The findings show that in Indonesia, lifestyle and price perceptions influence healthy food product purchasing decisions. Meanwhile, brand awareness and customer attitudes had no bearing on healthy food products purchase decisions. The novelty of this study stems from the discovery of new opportunities for business players to market healthy food products during the current COVID-19 period. This opportunity arises as a result of changes in customer lifestyles and price perceptions, both of which must be taken into account by organizations to offer nutritious food items at reasonable rates in Indonesia.
Coping mechanisms in Education in the face of the COVID-19 pandemic: adoption of technologies, psychological impacts and new teaching-learning paradigms

This research addresses the challenges faced by teachers and students as a consequence of the COVID-19 pandemic, highlighting the psychological impact associated with the abrupt need to adopt digital teaching tools in everyday school life. Studies of this nature are necessary to support preventive and/or therapeutic actions aimed at coping with emerging changes. Therefore, it was intended to understand the current scenario of remote teaching and how it interferes with the mental health of teachers and students, in such a way as to train them to deal with this new context, which tends to remain active beyond this pandemic. It was performed a survey of publications on the Web of Science and Google Scholar databases. Eight field researches on the topic were found and analyzed. The main difficulties reported by research participants refer to problems related to the adaptability of computer programs, the adaptation of didactic strategies to the digital model and the need to deliver, simultaneously, distance and face-to-face synchronous classes. Reports of exhaustion, anxiety, stress and fear due to the possibility of job loss and/or exposure to the virus were found, besides work overload. As a gap in the literature, it was noted an absence of studies on the topic involving teachers and students of elementary and high school in Brazil and abroad.
DEVELOPMENT OF LEARNING MEDIA USING ADOBE FLASH PLAYER SOFTWARE AND THE ROLE OF SELF EFFICACY TO IMPROVE FEEDBACK OF ECONOMIC SUBJECT FOR X IIS GRADE MAN 1 PADANG LAWAS

This study aims to create and develop learning media using Adobe Flash Flayer software in economics subject X IIS MAN 1 Padang Lawas. This research is a development research with ADDIE development model. In addition, this study was also conducted to determine the interaction of Self Efficacy with the use of media in improving student feedback. This research was conducted at MAN 1 Padang Lawas. The population of this study were all of students in X IIS grade MAN1 Padang Lawas which consisted of three classes which consist of 100 students. The results of this study are learning media with Adobe Flash Player Software developed that meet the eligibility requirements (valid) to be used as learning media in economics subjects for X IIS grade. Based on media aspect’s assessment, learning design and material aspects carried out by experts as well as responses or student’s responses, the percentage of feasibility level is 86.33% so that the conclusion belongs to the "Very Eligible" category. The developed learning media is effectively used in economic learning. Then, there is an interaction between learning media and Self Efficacy on students' economic feedback.
Marriage and Development: Cross-country Evidence

Marriage rates worldwide have fallen in recent decades. We draw micro data from 216 surveys to document that marriage rates decrease with development across countries from all income levels. One log point increase in GDP per capita is associated with a decline of 5 percentage points in the marriage rate. This marriage-development slope across countries is similar to the slopes of time-series patterns within a country based on evidence from 76 countries. We find that demographic distributions of age, education, and urban population account for at most one-third of the cross-country slope of marriage on development. We then propose a simple model to emphasize the contributions of two exogenous factors: economic development and declining desired fertility. Email: ecsfy@nus.edu. sg and renj@u.nus.edu. For helpful comments, we thank Paul Jackson, David Lagakos, Tommaso Porzio, Celine Zipfel, and seminar participants at NUS. For excellent research assistance, we thank Weifeng Dai. All potential errors are our own.
VEHICLE LOGO RECOGNITION BASED ON VEHICLE REGION AND MULTI-SCALE FEATURE FUSION

This paper presents a deep learning-based vehicle logo recognition framework based on vehicle regions and single shot framework with multi-scale feature fusion. To exactly locate front and rear regions of a vehicle, a vehicle region detection network based on region proposal network is designed. The vehicle region detection network uses ResNet-50 as the base network to generate base convolution feature maps. Atrous convolution is used after the base network to enlarge the receptive field to incorporate larger context information without increasing the number of parameters or the amount of computation. Each of detected vehicle region is fed into a vehicle logo recognition network based on single shot framework. The vehicle logo recognition network adopts Darknet-53 as the base network to generate proposals from each vehicle region. To enhance the performance of the proposed framework on small vehicle logo recognition, this paper designs a multi-scale feature fusion subnet which generates high-level semantic feature maps from base convolution feature maps. The tasks of detection predictions and object classification are performed on the multi-scale high-level semantic feature maps. Furthermore, a collected dataset based on a large public vehicle dataset is used to evaluate the proposed method. Experimental results on the collected dataset show the effectiveness of the proposed method on vehicle logo recognition. The proposed method provided a promising solution to vehicle logo recognition applications.
Simulation of combustion processes in gas-fuelled diesel engines

Abstract A thermodynamic multizone model incorporating detailed kinetic schemes has been developed for the prediction of the combustion processes in dual-fuel engines and some of their performance features. The consequences of the interaction between the gaseous and the diesel fuels and the resulting modification to the combustion processes are considered. A reacting zone has been incorporated in the model to describe the partial oxidation of the gaseous fuel-air mixture. The associated formation and concentrations of exhaust emissions are correspondingly established. The model can predict the onset of knock as well as the operating features and emissions for the more demanding case of light load performance. Predicted values for methane operation show good agreement with corresponding experimental values.
Numerical Analysis of Sensitivity of Eulerian Multiphase Model for a Spouted-Bed Grain Dryer

The article presents a computer model of an actual spouted-bed grain dryer, which was experimentally verified as far as the bed dynamics are concerned at both qualitative and quantitative levels. Following verification, a study concerning the response of the simulation model to changes in values of its parameters was carried out. As a consequence, the article presents a set of computer simulations made for various configurations of physical and numerical parameters. This study is aimed at determining the sensitivity of the Eulerian multiphase model (EMM) used in the simulations to the individual variables. The fountain height was assumed to be the basic value characterizing the bed during operation. The results obtained allowed in-depth understanding of the EMM function and contributed significantly to increasing the efficiency of modeling for devices such as spouted-bed grain dryers.
Essential Skills and Training Provisions for Building Project Stakeholders in Palestine

The primary aim of this paper is to identify the skills that bo th construction clients and contractors identify as critical to improving the building sector's overall productivity in the Gaza Strip, Palestine. Through a co mprehensive questionnaire targeting key project stakeholders (na mely, clients and contractors), this paper also evaluates the factors affecting skills upgrade and the continuity of training approaches currently used in this sector. Mentoring appears to be the preferred training approach for clients and contractors alike. According to respondents, decision-making, problem solving a nd goal setting skills are highly critical. Furthermore, conventional face-to-face meetings were identified as the most suitable communication channel to obtain and exchange project information. Staff self-interest and willingness to upgrade their skills were ranked as the most important factors influencing the effectiveness of the professional training process. Based on the study findings, the pape r concludes with a set of practical recommendations.
OXYGEN ACQUISITION OF THE REEDFISH,

In normoxic water at 25 °C, the reedfish (Erpetoichthys calabaricus) can breathe in both air and water, although water is the primary source of oxygen. This pattern of oxygen partitioning is altered by a number of factors. Increases in metabolic costs (e.g. locomotor activity) and decreases in aquatic oxygen concentration are met by increases in aerial oxygen uptake. Reedfish acclimated to 33 °C have increased lung breathing compared with fish acclimated to 25°C. Also, activity stimulates lung breathing more at 33 °C than at 25 °C. Unexpectedly, weight-specific oxygen uptake rates of reedfish at these two temperatures were not significantly different. Increased lung-breathing compensates for changes in locomotor activity, dissolved oxygen and temperature, allowing reedfish to meet their overall oxygen requirements. Exposure of reedfish to six different combinations of oxygen and carbon dioxide indicated that lung ventilation frequencies were more labile than gill ventilation frequencies. The maximum change in lung ventilation rates was 849 % above controls whereas the largest change in gill ventilation frequency was 27%. Exposure of reedfish to hyperoxia significantly depressed both gill and lung ventilation. Hypercapnic gases stimulated gill ventilation at both low (0-5%) and high (5%) concentrations; however, lung ventilation was only stimulated at the higher carbon dioxide concentration. The observed depression of gill ventilation frequencies in reedfish exposed to combinations of hypercapnic and hypoxic gases indicates that the inhibitory effect of low oxygen on gill ventilation dominates the stimulatory effect of hypercapnia. Overall, these data suggest that oxygen exerts a stronger influence in the control of respiration than carbon dioxide in this airand water-breathing fish.
Efeito da irrigação sobre a classificação do café

This study was carried on to verify the irrigation effects on coffee classification related to bean type, shape and size. These characteristics were investigated. The plants were irrigated by a center pivot where five different water depths were applied based on the difference between precipitation and evaporation from a Class A Pan (ECA). The cultivar planted was Rubi, installed in March 1999, spaced 3.5 meters between rows and 0.8 meters between plants. Statistical differences were not observed on the studied factors type (intrinsic defects), format (plain beans and "moca") and size (sieves). Among the types of defects, green and sour beans were the ones that presented the largest percentages for all harvests studied and different water depths. In term of size, the treatments that received water depths of 60% and 80% of ECA, presented the largest percentage of medium coffee (sieves 15 and 16), 55.6% and 55.3%, respectively. The irrigation effect on coffee beans classification related to the type (number of defects) was susceptible to larger percentage due to the highest variability of coefficient (V.C.) showed when compared to size and format of beans.
Electrically tunable dispersion compensator with fixed center wavelength using fiber Bragg grating

We present the design and development of a novel tunable dispersion compensator with fixed center wavelength that is based on the electrical adjustment of the chirp of a fiber Bragg grating (FBG). Both temperature gradient and strain gradient are employed to adjust the chirp of the FBG jointly. The electrical current flowing through the taper on-fiber thin-film heater will introduce a temperature gradient on the FBG. The shrinkage of a negative thermal expansion coefficient (NTEC) ceramic due to the temperature rise will compress the tapered FBG mounted inside it, and this will introduce a strain gradient on the FBG. The center wavelength of the FBG will be kept fixed because the effect of temperature rise on the FBG and the effect of compression of the FBG will offset each other. Applying an electrical power of less than 0.68 W, we demonstrate a linearly chirped FBG whose dispersion can be continuously adjusted from -178 ps/nm to -302 ps/nm with a central wavelength shift of as small as 0.16 nm.
Spermidine supplementation influences mitochondrial number and morphology in the heart of aged mice

Aging is associated with cardiac hypertrophy and progressive decline in heart function. One of the hallmarks of cellular aging is the dysfunction of mitochondria. These organelles occupy around 1/4 to 1/3 of the cardiomyocyte volume. During cardiac aging, the removal of defective or dysfunctional mitochondria by mitophagy as well as the dynamic equilibrium between mitochondrial fusion and fission is distorted. Here, we hypothesized that these changes affect the number of mitochondria and alter their three‐dimensional (3D) characteristics in aged mouse hearts. The polyamine spermidine stimulates both mitophagy and mitochondrial biogenesis, and these are associated with improved cardiac function and prolonged lifespan. Therefore, we speculated that oral spermidine administration normalizes the number of mitochondria and their 3D morphology in aged myocardium. Young (4‐months old) and old (24‐months old) mice, treated or not treated with spermidine, were used in this study (n = 10 each). The number of mitochondria in the left ventricles was estimated by design‐based stereology using the Euler‐Poincaré characteristic based on a disector at the transmission electron microscopic level. The 3D morphology of mitochondria was investigated by 3D reconstruction (using manual contour drawing) from electron microscopic z‐stacks obtained by focused ion beam scanning electron microscopy. The volume of the left ventricle and cardiomyocytes were significantly increased in aged mice with or without spermidine treatment. Although the number of mitochondria was similar in young and old control mice, it was significantly increased in aged mice treated with spermidine. The interfibrillar mitochondria from old mice exhibited a lower degree of organization and a greater variation in shape and size compared to young animals. The mitochondrial alignment along the myofibrils in the spermidine‐treated mice appeared more regular than in control aged mice, however, old mitochondria from animals fed spermidine also showed a greater diversity of shape and size than young mitochondria. In conclusion, mitochondria of the aged mouse left ventricle exhibited changes in number and 3D ultrastructure that is likely the structural correlate of dysfunctional mitochondrial dynamics. Spermidine treatment reduced, at least in part, these morphological changes, indicating a beneficial effect on cardiac mitochondrial alterations associated with aging.
Monoexponential, biexponential and stretched exponential models of diffusion weighted magnetic resonance imaging in glioma in relation to histopathologic grade and Ki-67 labeling index using high B values.

PURPOSE To explore the performance of various parameters obtained from monoexponential (Gaussian), biexponential and stretched exponential (non-Gaussian) models of Diffusion Weighted Magnetic Resonance Imaging in differentiating gliomas with correlation to histopathology and Ki-67 labeling index (LI). MATERIALS AND METHODS This Institute Review Board approved retrospective study included 51 pathologically proven glioma patients (WHO Grade I, n = 1; Grade II, n = 19, Grade III, n = 12; Grade IV, n = 19), and immunohistochemistry for Ki-67 LI was obtained. The conventional Magnetic Resonance (MR) images and Diffusion Weighted (DW) images with 19 non-zero b values (0-4500 s/mm2) followed by contrast-enhanced MR images were obtained at 3T preoperatively. All images were processed with Advantage Workstation 4.5 (GE Medical Systems). Region of interest (ROI) in the solid part of the tumor was manually drawn along the border meticulously excluding areas of edema, cyst, hemorrhage, necrosis, and/or calcification, and the parameters: Apparent Diffusion Coefficient (ADC) of monoexponential; pure molecular diffusion coefficient (Dslow), pseudo-diffusion coefficient (Dfast), and perfusion fraction (f) of biexponential; Distributed Diffusion Coefficient (DDC), and heterogeneity index (α) of stretched exponential models were obtained. ROI of 50 mm2 in the contralateral normal appearing white matter (NAWM) was drawn for the internal control either on centrum semiovale or white matter of the frontal lobe. Analysis of reliability by Intra-class Correlation Coefficient (ICC); correlation with Ki-67 LI by Spearman's rank correlation; comparison between high grade glioma (HGG) and low grade glioma (LGG) by either Mann Whitney U test or Independent t-Test; comparison among Grade II, III and IV gliomas by one-way ANOVA with Bonferroni; and diagnostic performance by analysis of Area Under Receiver Operating Characteristic (ROC) Curve (AUC) were conducted. RESULTS Highly significant differences were found between HGG and LGG for all the parameters (P < 0.001 for all). In differentiating HGG from LGG, AUC values were 0.955 for Ki-67 LI; 0.926 for α; 0.903 for Dslow; 0.897 for f; 0.863 for DDC; 0.852 for ADC; 0.820 for Dfast (P < 0.001 for all). The parameters ADC, Dslow, Dfast, f, DDC, and α showed moderate to good negative correlation with Ki-67 LI (P < 0.001 for all). The ICCs of all the parameters were found greater than 0.75 (P < 0.05 for all) suggesting good reliability of measurements. CONCLUSION In comparison to ADC derived from monoexponential model, the parameters α and Dslow derived from stretched exponential, and biexponential models respectively can efficiently differentiate HGG from LGG with high diagnostic accuracy. Additionally, f and DDC derived from biexponential, and stretched exponential models respectively are also more useful in differentiating HGG from LGG in comparison to ADC.
Long‐term cannabidiol treatment for seizures in patients with tuberous sclerosis complex: An open‐label extension trial

To evaluate the long‐term safety and efficacy of add‐on cannabidiol (CBD) in patients with seizures associated with tuberous sclerosis complex (TSC) in the open‐label extension (OLE) of the randomized, placebo‐controlled phase 3 trial GWPCARE6 (NCT02544763). Results of an interim (February 2019 data cut) analysis are reported.
Wrist-worn devices for the measurement of heart rate and energy expenditure: A validation study for the Apple Watch 6, Polar Vantage V and Fitbit Sense

ABSTRACT The purpose of this study was to investigate the accuracy of 3 recently released wrist-worn devices (Apple Watch 6, Polar Vantage V and Fitbit Sense) for heart rate and energy expenditure during various activities. The study population consisted of 60 young healthy individuals (30 men and 30 women; age: 24.9 ± 3.0 years, BMI: 23.1 ± 2.7 kg/m2). Heart rate and energy expenditure were measured using the Polar H10 and Metamax 3B, respectively (reference measures) as well as with the 3 wrist-worn devices during 5 different activities (sitting, walking, running, resistance exercises and cycling). The Apple Watch 6 displayed the highest level of accuracy for heart rate measurement with a coefficient of variation (CV) (%) of less than 5% for all 5 activities, whereas the Polar Vantage V and the Fitbit Sense presented various degrees of accuracy (from high to poor accuracy) dependent on the activity (CVs between 2.44-8.80% and 4.14-10.76%, respectively). As for energy expenditure, all 3 devices displayed poor accuracy for all 5 physical activities (CVs between 14.68-24.85% for Apple Watch 6, 16.54-25.78% for Polar Vantage V and 13.44-29.66% for Fitbit Sense). Results of the present study indicate that the Apple Watch 6 was the most accurate for measuring heart rate across all 5 activities, whereas variable levels of accuracy for heart rate measurement for the Polar Vantage V and the Fitbit Sense were observed depending on the activity. As for energy expenditure, all 3 devices showed poor accuracy during all activities. Highlights The Apple Watch 6 was the most accurate for measuring heart rate, whereas the Polar Vantage V and Fitbit Sense showed variable results dependent on the activity The Apple Watch 6, Polar Vantage V and Fitbit Sense showed poor accuracy for energy expenditure during 5 different physical activities Healthcare care professionals, athletes/coaches and the general population may want to proceed with caution on the clinical utility of energy expenditure of these devices during the implementation of an exercise training or nutritional programme.