Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis of the Influence of Brand Consciousness, Materialism, Social Comparison, Fashion Innovativeness, and Fashion Involvement on Attitude Towards Purchasing Luxury Fashion Goods and Repurchase Intention of Luxury Fashion Goods Furla Customers in Surabaya

Luxury fashion goods is a dynamic and competitive industry. Nowadays, customers are not only buying luxury goods, but also looking for added value that can only be obtained from these luxury goods, in determining them to be loyal customers. As a well-known brand with a rich Italian culture, Furla needs to always strive on how to continuously improve product quality, product innovation and other factors, by working to increase sales and build customer loyalty to Furla products. The purpose of this study was to evaluate and analyze the effect of brand consciousness, fashion innovativeness, fashion involvement, materialism and social comparison on Repurchase Intention through Attitude Towards Purchasing Luxury Fashion Goods at Furla in Surabaya. This research is a causal research, which uses a quantitative approach with analysis techniques using SPSS version 22.0 software. Data collection in this study was carried out by distributing questionnaires to 135 respondents, with the characteristics that respondents are customers of the Furla Store in Surabaya, women, aged 18-60 years, residing in Surabaya, have bought and used Furla products at least 2 times in The last 1 year, and still using Furla products until the time this research was conducted. Based on the research that has been done, the results show that there are two variables that most influence attitude towards purchasing luxury fashion goods are fashion innovativeness with a regression coefficient of 0.266 and brand consciousness with a regression coefficient of 0.212. So that Furla in Surabaya needs to increase the influence of these variables, to increase his attitude towards purchasing luxury fashion goods which will affect repurchase intention.
ELECTROMAGNETIC SIMULATION FOR ESTIMATION OF FOREST VERTICAL STRUCTURE USING POLSAR DATA

A novel method for the estimation of a forest vertical structure using Polarimetric Synthetic Aperture Radar (PolSAR) data only without the need to interferometry data is proposed in the present paper. Electromagnetic (EM) simulation is used to develop the proposed method, where the SAR pulse is simulated as a plane wave incident in the direction of the side looking angle of the SAR. For this purpose, the forest canopy layer is modeled as clouds of randomly oriented thin straight dipoles which are randomly distributed within an inclined prism volume, whereas the forest soil surface is modeled as a random rough surface. The proposed method aims to estimate the average height of the canopy layer above the soil surface, the canopy layer thickness, and the roughness of the forest ground surface. The proposed method is based on the Radar Vegetation Index (RVI) and the normalized Radar Cross Section (RCS) calculated from the PolSAR data and their relevance to the parameters of the forest vertical structure. Some examples are presented to demonstrate the capability of the proposed method using some PolSAR images obtained through EM simulation of the scattering from forest regions and by applying the theorem of SAR target composition with the Multiple Component Scattering Model (MCSM). The phase differences between the components of scattering obtained from the solution of the SAR target decomposition problem are used in the estimation process. The accuracy of the proposed method is assessed by calculating the percentage error of the estimated vertical structure and ground roughness for each resolution cell of the simulated forest region. It is shown that the percentage errors of the estimated parameters are very low, which reflects the accuracy and efficiency of the proposed method.
Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces

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Carrier localization in quaternary 
Ga1−xMnxAs1−yPy
 ferromagnetic semiconductor films

Motivated by the fact that holes in the ${\mathrm{Ga}}_{1--x}{\mathrm{Mn}}_{x}\mathrm{As}$ family of ferromagnetic semiconductors play a key role in determining their ferromagnetic properties, we have measured hole concentrations in a series of three ${\mathrm{Ga}}_{1--x}{\mathrm{Mn}}_{x}{\mathrm{As}}_{1--y}{\mathrm{P}}_{y}$ alloys grown by molecular beam epitaxy with varying amounts of phosphorus. This was carried out by Hall effect measurements, after eliminating the effect of the anomalous Hall term, and thus isolating the ordinary Hall term that directly provides the concentration of freely moving holes. Comparing these Hall effect results with total hole concentrations obtained from the number of acceptors and compensating donors as given by structural and magnetization measurements, we find that the number of itinerant holes (i.e., holes that contribute to the Hall effect) is significantly less than the total hole concentration. This indicates that a considerable fraction of the holes arising from Mn acceptors are localized. We find, furthermore, that the degree of such localization increases with the concentration of phosphorus in the ${\mathrm{Ga}}_{1--x}{\mathrm{Mn}}_{x}{\mathrm{As}}_{1--y}{\mathrm{P}}_{y}$ alloy. Our results indicate that the Curie temperature (and, by extension, other magnetic properties) described by the Zener model in ferromagnetic semiconductors of the ${\mathrm{Ga}}_{1--x}{\mathrm{Mn}}_{x}\mathrm{As}$ family are determined by the itinerant holes rather than by the total hole concentration. Finally, our results also indicate that ferromagnetism in these alloys vanishes when the total hole concentration falls below a certain Mott-like threshold, suggesting that the holes (both localized and itinerant) reside in the acceptor impurity band created by the presence of Mn acceptors.
Thermogravimetric Analysis of Flame-Retardant-Treated Wools

The thermogravimetric analysis of wool treated with a number of flame retardants has revealed that the retardants can be divided into two groups: those that retard the rate of mass loss on heating, and those (compounds of zirconium, titanium, tin, tungsten, and chromium) that enhance the rate of decomposition of the wool at temperatures where disintegration of the protein chains occur. Data were obtained on two different instruments, and while the results are in good qualitative agreement, it is emphasized that great care should be taken before quantitative comparisons of results from different instruments are undertaken.
Preparing teachers for the use of digital technologies in educational activities

Digital technologies have a strong impact on changes in the educational environment and activities. In the context of such changes, aggravated by the spread of coronavirus infection and the transition of schools to distance learning, teachers and students are facing the need to actively master digital tools and educational platforms. The authors aim at analyzing the professional gaps of teachers associated with digital literacy and the ability to effectively use digital technologies in educational activities. The conducted sociological research and the results obtained allow the authors to study the existing internal teachers’ gaps and show the main problems in the organization of educational activities in the context of the transition to distance learning and the existing gaps in the use of digital technologies by school teachers. Based on the results of the study, the authors have identified the key areas of the professional development of teachers. They have developed educational programs aimed at skill development and further training of teachers in the Russian Federation and foreign countries on such topics as the digital educational environment and the use of open educational resources, methods of using digital technologies in the organization of educational activities, methods and techniques of organization feedback, pedagogical communication in the digital environment, and information security and ethics in the digital environment. The authors have determined the conditions for the professional development of teachers in the process of skill development and further training, as well as self-education (including spontaneous training in the workplace). The authors believe that the increase in teachers’ digital literacy, based on filling their professional gaps, will help to improve the quality of general education and create conditions for the elimination of the digital divide of the population.
A topic model based framework for identifying the distribution of demand for relief supplies using social media data

ABSTRACT Natural disasters have caused substantial economic losses and numerous casualties. The demand analysis of relief supplies is the premise and basis for efficient relief operations after disasters. With the widespread use of social media, it has become a vital channel for people to report their demand for relief supplies and provides a way to obtain information on disaster areas. Therefore, we present a topic model-based framework and establish a demand dictionary and a gazetteer that aims to identify the spatial distribution of the demand for relief supplies by using social media data. Taking the 2013 Typhoon Haiyan (also called Yolanda) as a case study, we identify the potential topics of tweets with the biterm topic model, screen the tweets related to demands, and obtain the demand and location information from tweets to study the distribution of the relief supplies needs. The results show that, based on the demand dictionary, a gazetteer and the biterm topic model, the effective demand for relief supplies can be extracted from tweets. The proposed framework is feasible for the identification of accurate demand information and its distribution. Further, this framework can be applied to other types of disaster responses and can facilitate relief operations.
The Indonesian version of the Life Orientation Test-Revised (LOT-R): Psychometric properties based on the Rasch model

Abstract This study aimed to validate the Indonesian version of the Life Orientation Test-Revised (LOT-R), a scale used to measure optimism. Despite being adapted in over 20 countries, its validation and adaptation reports are unavailable. This study used the rating scale model to evaluate its psychometric characteristics. The instrument was tested on 584 Indonesian high-school students aged 14 to 18 years (mean age: 16.02; SD: 1.39; 54.5% female and 45.5% male). The results indicated that the LOT-R’s factor structure was unidimensional, based on the evidence from the Rasch analysis combined with a confirmatory factor analysis. Further, no local item dependence was identified. Based on the item fit statistics, all items fit the model. Nonetheless, their response categories functioned well, and the scale could reliably separate persons based on their optimism level; however, it had limitations regarding item reliability and separation because of the low number of items. Moreover, no differential item functioning was found based on gender and school type. Overall, the results indicated that this 6-item scale, including its psychometric properties, was satisfactorily reliable and valid to measure optimism in student samples, based on the Rasch analysis measurement standards. Implications and suggestions for future research have also been discussed.
Laser Surface Texturing of Eutectic Al-Si Alloy

Relative movement between piston and cylinder of an IC engine contributes to more than 60% of the friction experienced by the engine - in turn contributing to the wear of the piston and hence loss in its operational performance and efficiency. It is pertinent to explore technological solutions to overcome this situation. Texturing of surfaces appears to be an useful technique to enhance the tribological performance of the piston and cylinder assembly and information about the same are available in published literature. Laser surface texturing of a typical piston material such as an eutectic Al-Si alloy employing high power CO2-CW laser, firstly to examine the magnitudes of optimum laser processing conditions to realize surfaces which can retain oil and secondly to carry out characteristic analysis of the surface quality of the test material subjected to laser texturing, constitute the main thrust of this work. Measurements and analysis of the areal roughness parameters on the laser textured surfaces of the samples on a con-focal microscope reveal their capacity for enhanced oil retention, in turn ensuring reduced chances of scuffing of the sliding surfaces in comparison with non-textured samples, examined under similar test conditions.
Análisis de las competencias didácticas virtuales en la impartición de clases universitarias en línea, durante contingencia del COVID-19

espanolSe llevo a cabo un estudio cuantitativo con diseno transeccional descriptivo con el objetivo de analizar las competencias didacticas virtuales del modelo T-PACK (Shulman, 1986; Koehler y Mishra, 2009), que mayormente fueron desarrolladas por los docentes (N=87, Edad: M=33.91, DE=7.699, Max=51, Min=20) de la Universidad Autonoma de Tamaulipas que cursaron el Diplomado en Ambientes Virtuales de Aprendizaje del 2014 al 2019 e impartieron clases en linea durante contingencia del COVID-19 en el periodo comprendido de marzo a abril del ano 2020. Los resultados muestran que los docentes presentaron competencias sobresalientes en su catedra a distancia durante la contingencia, y ademas, no se encontraron diferencias significativas (p>0.05) entre el logro de los docentes varones (N=51, Edad: M=35.84, DE=7.298, Max=50, Min=20) y mujeres (N=36, Edad: M=29.33, DE=4.980, Max=49, Min=20) en ninguna de las dimensiones del modelo T-PACK. EnglishAs well as all the universities in the world, the Autonomous University of Tamaulipas (UAT) had to move rapidly from face-to-face education to online education, adapting its face-to-face class sessions to a virtual format to be able to attendstudents during the contingency of the COVID-19 pandemic. In this sense, aquantitative study with a descriptive transectional design was carried out with the aim of analyzing the virtual didactic skills based on a methodology supported by the T-PACK modelwhich were mostly developed by teachers (N=87,Age:M=33.91, SD=7,699, Max=51, Min=20) from the Autonomous University of Tamaulipas(UAT)who completed the Programin Virtual Learning Environments from 2014 to 2019 and impartedonline classes during the COVID-19 contingency in the period from March to April of the year 2020. Based on the above, the following hypothesis was formulated: The teachers who completed the Diploma in Virtual Learning Environments from 2014 to 2019 at the UAT, show outstanding / good or regular / deficient competences in the T-PACK model in their distance professorship during the COVID-19 contingency. Theresults show that teachers presentedoutstanding skills in their distance teaching during the contingency, and furthermore, no significant differences (p>0.05) were found between male (N=51, Age:M=35.84, SD=7,298, Max=50, Min=20) and females (N=36, Age: M=29.33, SD=4,980, Max=49, Min=20) in none of the dimensions of the T-PACK model.
THE HARMONIC COMPOSITION OF CURRENT IN ZERO-WORKING WIRE WITH NON-LINEAR LOAD

The purpose of this study was experimental investigations and a study of the nature of the change in the main harmonic components of the current in the neutral working wire of a three-phase four-wire network with a voltage of 0.38 kV. The study of the amplitude-phase-frequency characteristics of currents flowing in an electric network with a predominant non-linear load is one of the most urgent tasks, the solution of which will increase the efficiency of electric power transmission and eliminate the negative consequences due to the current flow in a zero-working wire in the network at 0.38 kV. To study the effect of load changes on the amplitude-phase-frequency characteristics of currents in the linear and zero working wires at the input of the load node, measurements were carried out by certified electrical measuring instruments namely, the “ResourceUF2M” and “Hioki 3196”. With these devices, the phase voltages at the input to the load node were measured. The analysis of the results obtained for the load node whose power was formed mainly by a lighting system with fluorescent and LED lamps and a system of office electrical receivers (computers, copiers, printers, scanners, etc.) was performed. It can be concluded that a current comparable to the currents of the linear wires of the network flows from the load node with the predominant nonlinear power receivers through the zero-working wire. At the same time, in the zero-working wire of the network, the third harmonic current prevails over the main frequency currents. ABSTRAK: Tujuan kajian ini adalah penyelidikan eksperimental dan kajian mengenai sifat perubahan komponen harmonik utama arus dalam wayar kerja neutral rangkaian empat wayar tiga fasa dengan voltan 0.38 kV. Kajian mengenai ciri-ciri frekuensiamplitud-fasa arus yang mengalir dalam rangkaian elektrik dengan beban bukan linear yang dominan adalah salah satu tugas yang paling mendesak, penyelesaiannya akan meningkatkan kecekapan penghantaran tenaga elektrik dan menghilangkan akibat negatif yang disebabkan ke arus semasa dalam wayar sifar bekerja di rangkaian pada 0.38 kV. Untuk mengkaji kesan perubahan beban pada ciri frekuensi-fasa frekuensi arus dalam wayar linier dan sifar pada input nod beban, pengukuran dilakukan oleh alat pengukur elektrik yang disahkan iaitu, "Resource-UF2M" dan "Hioki 3196". Dengan peranti ini, voltan fasa pada input ke simpul beban diukur. Analisis hasil yang diperoleh untuk simpul beban yang kekuatannya dibentuk terutama oleh sistem pencahayaan dengan lampu pendarfluor dan LED dan sistem penerima elektrik pejabat (komputer, mesin fotokopi, pencetak, pengimbas, dll.). Dapat disimpulkan bahawa arus yang setanding dengan arus
Reduction of 2,4‐Dinitrotoluene with Graphite and Titanium Mesh Cathodes

Electrochemical degradation of 2,4‐dinitrotoluene (DNT) in a bench‐scale reactor was studied, and a number of parameters including dissolved oxygen, current, voltage, and electrode shape and material were investigated. Quantified rates of degradation ranged from 0.003 to 0.008 min−1 for graphite and 0.003 to 0.06 min−1 for titanium. Products of degradation were identified as diaminotoluene (DAT) and azoxy dimers and, in some cases, were also quantified. An azoxy dimer was found only in experiments with dissolved oxygen, and regioselectivity favoring the first reduction at the para position was evident based on product studies. Degradation studies using a graphite rod cathode were mass‐transfer limited, while degradation studies using titanium mesh wire were not. The material of the electrode had a strong influence on degradation rates and on the way that different water quality parameters affect the rate of 2,4‐DNT degradation.
Telemonitoring of Children with COVID-19: Experience Report of the First 100 Cases

Introduction: The first case of coronavirus disease 2019 (COVID-19) in Brazil was diagnosed in February 2020. On March 20, the Ministry of Health issued Ordinance no. 467, regulating the use of telemedicine during the pandemic period. One of the various modalities of telemedicine is telemonitoring. Objective: To report our experience with telemonitoring and evaluate its applicability in the follow-up of the first 100 children who received the diagnosis of COVID-19 after visiting the emergency department of Sabará Hospital Infantil (“Hospital Sabará”) and who had no indications for hospitalization. Methods: The care records of the children were retrospectively analyzed, and telephone contact with the families of patients who did not complete the proposed telemonitoring protocol was initiated. Results: The average age of the children was 5.5 years, and a slight male predominance (54/100) was observed. Comorbidities were present in 24/100. The source of infection was family members living in the same household in 88/100 and other sources in 12/100. In the first telemonitoring, 44% of the evaluated patients were asymptomatic. In the second telemonitoring, 81% of the patients were asymptomatic. Telemonitoring was completed by 70% of the children. A total of 14 children returned to the emergency department, 11 of whom spontaneously (2/11 were admitted) and 3 under the indication of telemedicine (3/3 were admitted). Conclusions: Telemonitoring proved to be a clinically valuable resource in the follow-up of children with COVID-19, as it allowed continuity of care and identified patients with indications to return to the emergency department of Hospital Sabará and for hospitalization, thus avoiding unnecessary emergency department visits.
Terahertz Circularly- and Linearly Polarized Leaky-Wave Antennas Based on Spin–Orbit Interaction of Spoof Surface Plasmon Polaritons

In this article, we present terahertz circularly polarized (CP) and linearly polarized (LP) leaky-wave antennas based on spin–orbit interaction of spoof surface plasmon polaritons (SPPs). Besides the strong field confinement, spoof SPP waveguides inherently have longitudinal and transverse electric fields with phase quadrature, which means that the electric fields along spoof SPP waveguides have spin property. Based on the spin–orbit interaction, two terahertz CP leaky-wave antennas are achieved with periodic cylinders: 1) by loading cylinders on top of the spoof SPP waveguide, it can excite symmetrical right-hand circularly polarized (RHCP) and left-hand circularly polarized (LHCP) radiations in the transverse plane and 2) when the cylinders are loaded along the side of spoof SPP waveguide, RHCP radiation can be generated in the longitudinal plane; when the cylinders are replaced by cuboids, the RHCP radiation will become right-hand elliptical. Based on the field superposition theory, LP radiation is achieved by elliptically polarized waves with opposite handedness, generating by symmetrically loading periodic cuboids on both sides of the SPP waveguide. Finally, the terahertz LP leaky-wave antenna was fabricated and experimented. It achieves 14.5–17.5 dBi gain and scans from −18° to +12° in the operating frequency band of 145–220 GHz with $\vert \mathrm {S}_{11}\vert < -10 $ dB.