Miracle-dz/UniFAR-FTUs huggingface dataset:
The Relationship between Social Connectedness and Perceived Stress during COVID-19 Lockdown in High School Students in Pathumwan District, Bangkok

The COVID-19 pandemic has imposed hefty tolls upon humanity. Aside from tremendous fatalities and indelible damage inflicted upon the bodies of many recovered afflicted, lockdown and quarantine orders that it instigated have been shown by previous studies to have a psychological impact on humans. Ostensibly, gregarious animals like humans would lose the sense of belonging to society when occluded from the outside world, which is the case of lockdown and quarantine, and the loss thereof would precipitate negative mentalities. Measuring the former can be executed through the social connectedness scale, whereas one of the ways to gauge the latter is through the perceived stress scale. By conventional notion, perceived stress would have an inverted relationship with social connectedness, as suggested by previous studies. However, a long time has passed since they were conducted and sundry technologies have come to life ever since. People today, especially younger ones, are inclined to use these technologies for entertainment, and past research unveiled their efficacy in alleviating stress. This study was, therefore, commenced on the premise that low social connectedness during COVID-19 lockdown does not necessarily entail high stress among high school students in Thai schools in the Pathumwan district of Bangkok, who were of young ages and whose average household income exceeds that of many of their geographical counterparts. According to responses from the participants (n=374), there is no correlation between social connectedness and perceived stress, which supported the premise. While a conclusion can be drawn that technology use helps reduce the stress that would otherwise rise amidst the lockdown and would be responsible for the noncorrelation, more research is required to identify the clear cause of this astonishing outcome.
Genetic Diversity and Association Analysis of Lint Percentage Variation Population in Gossypium Hirsutum L. Based on Microsatellite Markers

ABSTRACT The most important goal in cotton breeding is to increase the fiber yield which can be increased by improving a key trait, lint percentage (LP). However, narrow genetic background of upland cotton resulting in stagnant yield. In order to effectively dissect the genetic mechanism and enrich the gene loci of LP in cotton, the genetic diversity and population structure and a genome-wide association study (GWAS) was conducted using 204 upland cotton accessions based on 191 pairs of polymorphic microsatellite markers. The results were as follows: (1) The agronomic traits of the materials especially LP varied widely. (2) The SSRs revealed relatively high degree level of genetic diversity at DNA level. (3) Similarity coefficient cluster analysis of SSR markers indicated the influence of male parent on female parents was different after cross, the variation sites of agronomic traits could be further excavate in F1. (4) The GWAS revealed that 3 SSR markers were associated with LP: BNL3649-2, GH0132-2, CIR0246-3. There were two genes, Gh_D02G0125 and Gh_D11G2610, near the three SSR loci. These results provided a theoretical basis for improving fiber yield.
Digital sliding mode controllers for active control of ground vehicles

This paper aims at designing, in the discrete‐time setting and using sliding mode techniques, some controllers ensuring the tracking of desired references of lateral and yaw velocities for a ground vehicle with active front steering and rear torque vectoring actuators. The vehicle is described by an enhanced discrete‐time model, recently presented in the literature. These three controllers have been designed considering the modified equivalent control method for perturbation attenuation, the discrete‐time‐like super‐twisting algorithm, and the discrete‐time reaching law. They have been tested with a simulation study using CarSim, where the three controllers are compared under parametric variations, external perturbations, and different sampling periods.
Transcranial Doppler Assessment of Cerebrovascular Reactivity in Migraine Patients

Background: Migraine is considered as a neurovascular coupling disorder where the cerebral vascular reactivity is malfunctioning and measuring hemodynamic changes during migraine without causing more disturbances has always been a challenge. Objective: This study aimed to detect the role of transcranial Doppler ultrasound in assessing the vasomotor reactivity of cerebral blood vessels in migraine patients. Patients and Methods: This case control study included thirty-two migraine patients and thirty-two healthy individuals that were recruited from Neurology Department at Zagazig University Hospital and Neuropsychiatry Department at El-Sahel Teaching Hospital Outpatient Clinics during the period from April to December 2020. We performed Transcranial Doppler (TCD) on all participants and Breath Holding Index (BHI) was measured on both sides from the middle cerebral artery (MCA). Results: There was a significant decrease in breath holding index in patients of migraine. There was a statistical significance decrease in BHI and Maximum flow velocity in the left MCA (Max. FV Lt MCA) among severe patients compared to moderate patients. Conclusion: Migraineurs have significantly lower BHI compared to control group. The noninvasiveness of TCD and the possibility it provides for obtaining instantaneous information about cerebral blood flow changes indicates its usefulness in the study of vascular changes in different types of migraine.
Learning English Vocabulary via Computer Gaming

Due to the COVID-19 pandemic, educators have opted for online discussions and classes in which the teaching and learning sessions occur beyond the classroom environment. As various forms of technology such as gaming can be potentially used as platforms for online teaching and learning, the study aims to investigate the use of vocabulary learning strategies (VLS) in a massively multiplayer online role-playing game (MMORPG) among Malaysian English as a second language (ESL) players. Data were obtained via a 12-hour online game-play recorded sessions of Guild Wars 2 involving four Malaysian ESL players. The participants consisted of experienced online gamers aged between 24 and 25 years. The game-play sessions were also observed to provide supporting details on how the players utilised strategies when learning English vocabulary. The outcome of the study revealed that the ESL players employed different VLS during their game-play sessions. Gu and Johnson’s (1996) categorisation of VLS, which are metacognitive, cognitive, memory, and activation strategies, was subsequently modified to accommodate the MMORPG context. The results showed that the top five strategies used by the players were meaning-making, consultation, using online dictionary, word comparison, and incorporating words with real-world contexts.
Effect of Flipped Teaching on Cognitive Load Level with Mobile Devices: The Case of a Graphic Design Course

Due to the emergence of computer education, AI education, the Internet of Things, big data, and technological wisdom, it is easy for students to be distracted when engaged in traditional education. Flipped teaching is a teaching strategy frequently used in colleges and universities. The focus of this research was conducted by a comparative analysis of the cognitive load between the experimental group and the control group through a quasi-experimental design for research with different learning methods and different classes. More specifically, flipped teaching was carried out with an experimental group, and traditional teaching a control group; they were observed at the same time, and 213 private university students participated in the experiment. The research proposes a practice of mixed teaching, carried out in a group communication behavior system, and enhancing the spirit of group interaction and learning through mobile devices. The core value of the research lies in (1) online learning, (2) group interaction, and (3) the learning load of the conceptual model. In addition, focus group interviews were used to provide feedback on participants’ cognition and emotions. The results indicate that there were differences in cognitive load between the two classes.
A Constrained Markovian Diffusion Model for Controlling the Pollution Accumulation

This work presents a study of a finite-time horizon stochastic control problem with restrictions on both the reward and the cost functions. To this end, it uses standard dynamic programming techniques, and an extension of the classic Lagrange multipliers approach. The coefficients considered here are supposed to be unbounded, and the obtained strategies are of non-stationary closed-loop type. The driving thread of the paper is a sequence of examples on a pollution accumulation model, which is used for the purpose of showing three algorithms for the purpose of replicating the results. There, the reader can find a result on the interchangeability of limits in a Dirichlet problem.
Aspects of Coatings on Buckypaper as a Study into the Expected Effects of Coatings on Carbon Nanotube Wires

Buckypaper (BP) was used as an accumulation of nanotubes to simulate as carbon nanotube (CNT) wires to study the interaction between four different insulating coating materials and CNTs. The wettability and electrical conductivity performance of each CNT/coating pair was assessed. The BP was prepared by filtering a sonicated solution of single-walled carbon nanotubes and N,N-Dimethylformamide, through a polytetrafluoroethylene (PTFE) membrane of 0.45 µm pore size. It was observed with Scanning Electron Microscopy, its chemical composition determined by X-ray Photoelectron Spectroscopy, its imperfections and purity measured by Raman Spectroscopy and the porosity (%) and pore distribution obtained by Nitrogen Physisorption. The results showed similar porosity and surface structure to that of reported CNT wires. The surface free energy of the BP was obtained through the Owens-Wendt method, and surface tension of the coatings was calculated with pendant drop measurements to find the adhesion and wettability parameters. Epoxy resin showed the highest wettability and adhesion, which resulted in infiltration into the BP that decreased electrical conductivity by 65%. In contrast, the insulating varnish showed much lower level of wettability and adhesion which resulted in the lowest decrease in conductivity (9.3%).
Biological efficiency and nutritional composition of Pleurotus djamor cultivated on bagasse of Agave salmiana

The objective of the present study was to use molecular techniques to identify a wild mushroom isolated from A. salmiana, and then evaluate its biological efficiency, production rate, and nutritional and morphological characteristics when grown on A. salmiana bagasse with various concentrations of urea as a source of nitrogen. Two types of inoculum were employed: in grain (WG) and pellet (WP) form. The substrate was supplemented with total nitrogen concentrations (TN) of 0.77, 0.95, 1.14, 1.32, and 1.5% to evaluate its effect on the biological efficiency (BE), production rate (PR), and morphological and nutritional characteristics of the fruiting bodies. The molecular analysis of the ITS region permitted the amplification of a product of 750 pb. The mushroom was identified as Pleurotus djamor. After supplementing the substrate with urea, a BE of 70% was obtained in the sample inoculated with WG at 1.32% TN. Observations found that the TN concentration of 1.5% produced malformations in the fruiting bodies. The analysis of the sporocarps indicated a raw protein content (RP) of 15–26% and that the mushroom’s nutritional composition changed according to the inoculum utilized and the percentage of nitrogen in the substrate. This is the first report on the isolation of P. djamor on A. salmiana as an atypical substrate, and so represents an opportunity for further study and commercialization. To its chemical composition and high availability, A. salmiana bagasse is a suitable alternative substrate for cultivating edible mushrooms, specifically P. djamor.
Partitioning of the Electron-Electron Interaction

Electron-electron correlation forms the basis of difficulties encountered in many-body problems. Accurate treatment of the correlation problem is likely to unravel some nice physical properties of matter embedded in this correlation. In an effort to tackle this many-body problem, an exact partition function for the correlation energy between two interacting states is proposed in this study. Using this partition function, a model potential for a two-electron system is derived. The model potential can accurately reproduce the singlet states of a singly excited neutral helium atom with one of its electrons frozen in the $1s$ orbital.
Fixed Wing Aircraft Automatic Landing with the Use of a Dedicated Ground Sign System

The paper presents automatic control of an aircraft in the longitudinal channel during automatic landing. There are two crucial components of the system presented in the paper: a vision system and an automatic landing system. The vision system processes pictures of dedicated on-ground signs which appear to an on-board video camera to determine a glide path. Image processing algorithms used by the system were implemented into an embedded system and tested under laboratory conditions according to the hardware-in-the-loop method. An output from the vision system was used as one of the input signals to an automatic landing system. The major components are control algorithms based on the fuzzy logic expert system. They were created to imitate pilot actions while landing the aircraft. Both systems were connected with one another for cooperation and to control an aircraft model in a simulation environment. Selected results of tests presenting control efficiency and precision are shown in the final section of the paper.
PRIOR MATHEMATICS PERFORMANCE, STATISTICS ANXIETY, SELF-EFFICACY AND EXPECTATIONS FOR PERFORMANCE IN STATISTICS: A SURVEY OF SOCIAL SCIENCES STUDENTS IN A CARIBBEAN INSTITUTION OF HIGHER EDUCATION

The objectives of this study were to examine (i) the expectation for performance (EFP) in statistics of first year university students, (ii) the relative effect of previous mathematics performance (PMP), perceived statistical self-efficacy (SSE), and statistics anxiety (SA) for understanding these expectations, and (iii) whether students’ EFP scores differ based on sex and academic discipline. Findings point to average to high EFP in statistics, with no differences in these levels based on sex or academic discipline. PMP had little effect on students’ EFP, but, moderate effects on their levels of SA. While SSE positively affected both students’ SA, this measure produced a negative effect on their EFP in statistics. Both SSE and SA negatively affected students’ EFP in statistics, but with minimally higher levels for the latter.
Effect of CNU091, a Lactic Acid Bacterium, Isolated from Fermented Mustard on Antimicrobial Activity, in vitro and in vivo

The antimicrobial activity of lactic acid bacteria (LAB) isolated from fermented mustard were investigated in vitro and in vivo. One hundred and fifty nine strains of LAB isolated from traditional Taiwan fermented mustard were evaluated for their adherence ability, acid and bile tolerance and antimicrobial activity in vitro. In addition, Wistar rats were orally administered with soy fermented products fermented with CNU091 for their antimicrobial activity in vivo. Fecal and fecal of cecum samples were collected to determine number of beneficial bacteria Bifidobacterium spp. and harmful bacteria Clostridium perfringens by classical plate count and by PCR amplification. Of the strains, CNU091 was acid- and bile-tolerant, and significantly higher adherence to Caco-2 cells compared with the commercial probiotic. CNU091 identified as Lactobacillus plantarum with 16S rRNA sequences could inhibit the growth of pathogenic bacteria, including Escherichia coli, Salmonella Enteritidis, and Staphylococcus aureus in vitro. Fecal and fecal of cecum samples were collected to determine number of beneficial bacteria Bifidobacterium spp. and harmful bacteria Clostridium perfringens, CNU091 had a significant antimicrobial activity compared to the control. The villus height (Vh) / crypt depth (Cd) ratio were increased, which suggested CNU091 modulated intestinal mucin composition. The results implicated CNU091 on antibacterial activity may be regarded as a biological activity and have potential for improving the intestinal health.
A Designed Eco-Art and Place-Based Curriculum Encouraging Students’ Empathy for the Environment

Environmental art education is gaining importance in schools as arts education begins to acquire a more significant role in environmental education. This emerging field of study is an interdisciplinary endeavor that is centered on the different fields of environmental education and visual art education and provides a means of making students aware of environmental issues through environmental art education. It has been suggested that students get into a relationship with nature prior to the request to conserve the environment in order to be nature connected. This abstract focuses on teaching and learning through the arts, a pedagogical way in which students discuss the challenging aspects of environmental issues. The aim of this study is to make students act like protectors of their environment through an eco-art place-based curriculum. This paper’s pedagogies will provide educators with a framework for developing environmental art education lessons and curricula. This experimental study has been planned to gather data from interviews and observation of students and by making the students participate in nature-related activities. The findings show that students prefer to let go of their fascination with formulating better ecological perspectives. On the positive side, a few students went through some frustration during the program and the activities. Students have given positive feedback on the program in positive terms, such as “fun”, “interesting”, and “cool”, to express their experience gained through the class activities.
Redox-active cathode interphases in solid-state batteries

All-solid-state batteries are expected to provide a next-generation solution for energy storage. Employing fast conducting lithium thiophosphates as a replacement for liquid electrolytes in conventional lithium ion batteries has shown great promise, however, capacity fading and the underlying interfacial side reactions of thiophosphates and cathode active materials are not yet understood well. In this study, we charge solid-state batteries to different cut-off potentials and find the formation of a redox-active resistive layer in the solid electrolyte, which impedes the conductivity depending on the state-of-charge of the battery. Using electrochemical impedance spectroscopy as well as depth profiling with X-ray photoelectron spectroscopy we find a thick passivation layer at the current collector and decomposition products within the cathode composite. In addition, an in situ electrochemical experiment during X-ray photoelectron spectroscopy shows that the solid electrolyte is redox active at the cathode/solid electrolyte interface in solid-state batteries. This work highlights the importance of protecting interface layers at the current collector, and the influence of the resulting electric potential drop, as well as provides insight into the redox chemistry of lithium conducting thiophosphates.
Charting the functional form of working memory in two nationally representative samples

We leveraged nationally representative data from the Panel Study of Income Dynamics-Child Development Supplement (N = 3,562) and the Early Childhood Longitudinal Study (N = 18,174), to chart the functional form of working memory (WM) from 3 to 19 years of age. Results from this preregistered study (https://osf.io/4pvwk) revealed non-linear growth patterns for both forward and backward digit span tasks, with the most rapid growth occurring during early childhood and early adolescence. We also found that males and females develop WM at similar rates across the U.S. population. Together, this study highlights the relative importance of the early childhood and early adolescent periods for WM development. These benchmarks of normative WM development can also provide researchers with a reference against which to compare the developmental changes of WM in individual studies and allow clinicians and educators to track individual progress and evaluate educational programs using national trends of WM development.
Lobster Cultivation in Indonesia and Vietnam: A Review

The development of spiny lobster (Panulirus sp.) cultivation is of particular concern as market demand continues to increase while capture fisheries production remains static and with little chance of increasing. Indonesia has a unique opportunity to build the largest lobster aquaculture industry in the world, based on the significant natural resources of the puerulus settlement. Cultivation of lobster in the country is one solution to maintain the availability of lobster seeds in the waters. The success of Vietnam's lobster industry has generated enormous interest in Indonesia, where is having so much potential for the lobster farming industry. Lobster cultivation activities consist of catching lobster puelurus, juvenile production, and lobster rearing. Vietnam, which has first started lobster cultivation activities, can certainly be an example for Indonesia in developing lobster in its own country. Several innovations that have been successfully developed in Vietnam, such as the process of catching using trawls or using fluorescent lights or cultivation activities using cages that are submerged with a depth of more than 10 m can certainly be examples for Indonesia to consider.
Stability of Headspace Volatiles in a ‘Fallglo’ Tangerine Juice Matrix System at Room Temperature

Gas chromatography systems are usually equipped with autosamplers. Samples held in the autosampler tray can stay up to one day or longer at room temperature, if the tray is not equipped with a cooling mechanism. The objective of this research was to determine if holding samples at room temperature influences measurement of volatiles by using ‘Fallglo’ tangerine juice as a model. Tangerine juice mixed with saturated NaCl containing an internal standard (IS), 3-hexanone, was held in the autosampler for different periods of time at 25 °C, incubated at 40 °C, and then exposed to a solid phase microextraction (SPME) fiber to absorb volatiles at 75-min intervals prior to be analyzed by a GC-MS system. Results showed that there were significant changes caused by a 24 h or longer holding time at 25 °C in absolute peak area (APA) for 12 volatiles out of a total of 16 compounds detected, including hexanal, E-2-hexenal, s-pinene, octanal, d-limonene, linalool, nonanal, butyl-2-methylpropionate, copaene, caryophyllene, and valencene and the IS, 3-hexanone. However, there were no differences for four terpenes: α-thujene, α-pinene, α-terpinene and p-cymene. Three aldehydes (hexanal, E-2-hexenal and octanal) increased linearly at a rate of 144%, 238%, and 127% per day, respectively. The proportion agrees with a Henry’s law based model. Butyl 2-methylpropionate, the only ester detected, decreased in both absolute and relative amounts (relative to IS), indicating that esters may not be favorable compounds in competition for binding sites on the SPME fiber chosen. Terpenes and terpene alcohols increased in absolute amount but decreased in relative amount as holding time was extended. The research confirmed that extended holding time at room temperature markedly influenced the profile of volatile measurements, and the change in IS during holding period did not represent other volatile components.