Miracle-dz/UniFAR-FTUs huggingface dataset:
Social media sites users' choice between utilitarian and informational reinforcers assessed using temporal discounting

Objective This study provides a first approach to the use of the Multiple-Choice Procedure in social media networks use, as well as empirical evidence for the application of the Behavioral Perspective Model to digital consumption behavior in young users in conjunction with a methodology based on behavioral economics. Participants/methods The participants were part of a large university in Bogotá, Colombia, and they received an academic credit once they completed the online questionnaire. A total of 311 participants completed the experiment. Of the participants, 49% were men with a mean age of 20.6 years (SD = 3.10, Range = 15–30); 51% were women with a mean age of 20.2 years (SD = 2.84, Range = 15–29). Results Among the total participants, 40% reported that they used social networks between 1 and 2 h a day, 38% between 2 and 3 h, 16% for 4 h or more, and the remaining 9% used them for 1 h or less per day. The factorial analysis of variance (ANOVA) allowed us to identify a statistically significant effect of the delay of the alternative reinforcer, that is, the average crossover points were higher when the monetary reinforcer was delayed 1 week, compared to the immediate delivery of the monetary reinforcer. There was no statistically significant effect of the interaction between the magnitude of the reinforcer and the delay time of the alternative reinforcer. Conclusions This study supports the relative reinforcing value of an informational reinforcement consequence such as social media use, which is sensitive to both the magnitude of reinforcement and the delay in delivery as individual factors. The findings on reinforcer magnitude and delay effects are consistent with previous research that have applied behavioral economics to the study of non-substance-related addictions.
Wavy wall effects on turbulence production and large-scale modes

We describe how outer flow turbulence phenomena depend on the interaction with the wall. We quantify the influence of highly rough surfaces on turbulence statistics, eigenmodes and spectra of eigenvalues in the outer part of the wall shear layer of an isothermal turbulent flow. Surface geometries with different amplitude-to-wavelength ratios can be regarded as surfaces of defined wall roughness. The wavelength, Λ, and the wave amplitude, 2a, of a water channel are varied by changing the bottom wall in the test section. We consider three sinusoidal wall profiles defined by the amplitude-to-wavelength ratio α = 2a/Λ = 0.2 (Λ = 30 mm), α = 0.2 (Λ = 15 mm), and α = 0.1 (Λ = 30 mm). Digital particle image velocimetry is performed to examine the spatial variation of the streamwise, spanwise and wall-normal velocity components. Statistical quantities that are determined are the Reynolds stresses, turbulent kinetic energy, and turbulent energy production. Measurements are performed at a Reynolds number of 11200, defined by the half channel height and the bulk velocity. A characteristic length scale in the most dominant eigenmodes can be found that agrees for all wall profiles and is independent of the amplitude-to-wavelength ratio. The turbulence quantities compared at defined streamwise coordinates in wall-normal direction are independent of the wavy wall profile in the outer region when scaled with the friction velocity, u* w .
Spectroscopic Confirmation of Northern and Equatorial Cataclysmic Variables. III. 32 Poorly Known Objects

We present flux-calibrated spectra for 32 objects from the Downes et al. catalog of cataclysmic variables in the 3800-8500 Å wavelength range. The stars either do not have any published quiescent spectra or have reference spectra that are only described. As with previous papers in this series, the aim of our CCD spectrophotometric observations is to confirm or disprove the CV nature of the program stars because the lack of published spectra can leave their classification as CVs in doubt. Among these 32 objects, 15 are confirmed to be CVs, while seven are clearly not CVs.
Tachism: Tri-Port Antenna with Triple Notching Characteristic and High Isolation System for MIMO Application

A novel ultra-wideband (UWB) KAYI-shaped and common KITE-shaped ground plane tri-port antenna is proposed. The proposed research work has a small size of (30 × 30 × 1.6 mm3). The MIMO antenna elements are placed in a KAYI-shaped (Y-shaped) with a symmetric phase shift of 120∘ between the nearby MIMO antennas element improving the isolation. The antenna’s gain is more than 5 dBi for the entire bands of WiMax, WLAN, and X-band satellite communication. The suggested work includes notches at 3.2 GHz, 5.2 GHz, and 8.9 GHz, respectively. The notching characteristics are made possible by L-shaped slits for the WiMax band, the inverted U-shaped slot for WLAN, while the third is created by the interaction between the L-shaped and U-shaped notching elements. Results were measured after making the prototype antenna on the FR-4 substrate. The proposed antenna has good impedance matching for 2–20 GHz and three notching characteristics with high isolation among the MIMO elements. Mean effective gain (MEG), envelope correlation coefficient (ECC), and total active reflection coefficient (TARC) are the diversity metrics of MIMO antennas which are in good comparison to the proposed antenna. The antenna is a good candidate for deployment in wireless communication and MIMO applications.
ELECTROCHEMICAL STUDIES OF OXYGEN, HYDROGEN PEROXIDE,AND SUPEROXIDE ANION AT THIN METAL FILMS FOR THE DEVELOPMENT OF AMPEROMETRIC SENSORS

Electrocatalytic properties of thin films of gold and platinum evaporated onto a glassy carbon substrate were studied using the rotating disk electrode technigue (RDE) and cyclic voltammetry (CV). The obtained kinetic parameters of oxygen reduction at thin films of gold and platinum electrodes are similar to the corresponding values at the bulk elžctrodes. An electrochemical method for the detection of the superoxide anion radical (02) based on immobilized cytochrom c on the surface of a gold film is described.
The 2p33s, 3p and 3d Configurations of Eight Times Ionized Sulphur, S IX

The spectrum of eight times ionized sulphur, S IX, has been investigated in the wavelength region 690 to 960 A by means of the beam-foil method. Twenty-three new lines have been identified as combinations between levels of the 2p33s, 3p and 3d configurations. Many of these lines have also recently been found in spectra of the solar corona recorded by the SOHO satellite. We have also identified 12 new lines between 47 and 55 A as combinations between the 2s22p4 ground configuration and 2p33s and 3d. The new transitions combined with previously known data establish all 10 2p33s levels, 13 of the possible 28 3p levels and 34 out of 38 3d levels. The spectroscopic identifications are supported by isoelectronic extrapolations and by theoretical calculations.
Exact controllability, stabilization and perturbations for distributed systems

Exact controllability is studied for distributed systems, of hyperbolic type or for Petrowsky systems (like plate equations). The control is a boundary control or a local distributed control. Exact controllability consists in trying to drive the system to rest in a given finite time. The solution of the problems depends on the function spaces where the initial data are taken, and also depends on the function space where the control can be chosen.A systematic method (named HUM, for Hilbert Uniqueness Method) is introduced. As the terminology indicates, it is based on Uniqueness results (classical or new) and on Hilbert spaces constructed (in infinitely many ways) by using Uniqueness. A number of applications are indicated.Having a general method for exact controllability implies having a general method for stabilization. This leads to new (and complicated .) nonlinear Riccati’s type PDEs, to be compared with direct methods (when available). In the last part of the paper, we consider how all this behaves fo.
A SURVEY FOR SMALL-AMPLITUDE VARIABILITY AMONG POPULATION II STARS.

A search for small-amplitude variability among members of old stellar populations reveals no variability 0'! '01 among 15 metal-deficient or high-velocity F- and G-type subdwarfs, 13 old-disk main-sequence F stars, four cluster blue stragglers, and seven blue horizontal-branch field stars. Variability was detected in two A-type stars: A metal-deficient main-sequence A star, BDS 1269A = HD 15165 is shown to have 8 Scuti-like variability, and the variability of the high-velocity field blue straggler HD 100363 reported by Eggen (1971) is confirmed. The high-velocity sdAp star GD -210, a suspected variable, showed no amplitude 0'! '017 for three hours. Teff and log g of ten high-velocity, short-period variables are similar to those of the 8 Scuti stars with Teff 7800 K, although the low-mass variables in the sample probably do not share the same evolutionary history as the higher-mass field blue stragglers. Key words: stellar pulsation - subdwarfs - dwarf cepheids - 8 Scuti stars
Prediction of Nucleate Pool Boiling Heat Transfer Coefficients of Refrigerant-Oil Mixtures

This paper describes an experimental investigation to determine the mechanism governing nucleate pool boiling heat transfer in refrigerant-oil mixtures, the role diffusion plays in this process, and the influence of the fluid mixture properties. Boiling heat transfer date were taken in mixtures of up to 10 per cent oil by weight in R-113. Thermophysical properties of the mixtures (density, viscosity, surface, tension, specific heat, and contact angle) were measured. The decrease in heat transfer coefficient with incresing oil concentration is attributed to diffusion in an oil-enriched region surrounding the growing vapor bubbles. A correlation based on a postulated mechanism is presented which shows fair agreement with the experimental data from this study and with data obtained from the literature.
The Relations Between Number Property Strategies, Working Memory, and Multiplication in Elementary Students

This study aimed to examine the relations among property strategies, working memory, and multiplication tasks with 101 Chinese fourth-grade students. Two multiplication property strategies (associative and distributive) were compared with no strategy and demonstrated differentiated effects on students’ accuracy and reaction time. Associative property strategy outperformed the distributive strategy and no strategy on the measures of accuracy and reaction time. The findings support the problem difficulty effect. The findings indicate that if a strategy does not necessarily simplify a problem, it might not help to enhance accuracy, suggesting that multiplication property strategies should be used with respect to the structural features of the problems. Among more difficult problems, visuospatial sketchpad consistently explained unique variances in problem accuracy.
Properties of blends of ultra-high molecular weight polypropylene with various low molecular weight polypropylenes

Abstract To enhance the ease of processability of the ultra-high molecular weight polypropylene (UHMWPP), the various low molecular weight polypropylenes (LMWPPs) blended with the UHMWPP via a facile melt blending process. The effect of the LMWPPs component on the UHMWPP component on its rheological and mechanical properties was characterized using various measurement techniques. The processability of the UHMWPP was improved drastically with the introduction of LMWPP components as the melt index of the blend increased. As the LMWPP content increases, the mechanical properties of the blends tend to increase or decrease, depending on the type of LMWPP.
Rab GTPases, tethers, and SNAREs work together to regulate Arabidopsis cell plate formation

Cell plates are transient structures formed by the fusion of vesicles at the center of the dividing plane; furthermore, these are precursors to new cell walls and are essential for cytokinesis. Cell plate formation requires a highly coordinated process of cytoskeletal rearrangement, vesicle accumulation and fusion, and membrane maturation. Tethering factors have been shown to interact with the Ras superfamily of small GTP binding proteins (Rab GTPases) and soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs), which are essential for cell plate formation during cytokinesis and are fundamental for maintaining normal plant growth and development. In Arabidopsis thaliana, members of the Rab GTPases, tethers, and SNAREs are localized in cell plates, and mutations in the genes encoding these proteins result in typical cytokinesis-defective phenotypes, such as the formation of abnormal cell plates, multinucleated cells, and incomplete cell walls. This review highlights recent findings on vesicle trafficking during cell plate formation mediated by Rab GTPases, tethers, and SNAREs.
Social Support Networks and Care for People Who Use Harmful Drugs

Background: The “problem of drugs” is a complex phenomenon with different social dimensions. Thus, the strategy to care for people who use drugs should consider their social support networks, which are defined here as dimensions that compose the social integration of people. Objective: In this paper, we investigate how social support networks are organized, structured, and constituted according to clients of a mental health service dedicated to treat alcohol and drug abuse. Methods: Participant observation was employed in a mental health service for three months, and six interviews and three groups of activities were conducted with local clients. Results: The results demonstrated that the social network of this group is composed of informal and formal social supports: the former includes family, religious institutions, and work, and the latter was represented by a few institutions. However, there are few supports that contribute to the social inclusion and participation of these clients. Conclusions: Care actions should expand social networks, helping to create more solid relationships, considering the macro and micro social-life dimensions. Occupational therapists can contribute to this process by driving their action toward social life, building more social participation strategies, and reconfiguring care and social meaning in everyday life.
Observations of subpicosecond dynamics in GaAlAs laser diodes

We present results of pump‐probe experiments on GaAlAs laser diodes indicating a 0.9‐ps relaxation time associated with the device transmission. Subpicosecond, tunable near infrared pulses obtained by fiber compression were used to carry out the experiments. The data strongly support a model in which a nonequilibrium carrier temperature in the active layer is responsible for the observed signal.
Edge issues in ITB plasmas in JET

This paper documents critical issues in internal transport barrier (ITB) plasmas in JET, namely the transition from type III to type I edge localized modes (ELMs), and the subsequent impact of large amplitude ELMs on the ITB. Benign type III ELMs are observed in ITB plasmas at input powers much larger (up to a factor 3) than the empirical threshold for type III/I transition derived from standard H-modes. Various measurements indirectly suggest a larger fraction of plasma current at the edge of ITB plasmas. Experimental results look consistent with a type III ELM regime controlled by a large fraction of edge current. Especially, the transition to type I ELMs does not occur for a broad current profile (li≈0.78) characterized by low edge magnetic shear (s95≈2.6), and a back transition from type I to type III has been found to well correlate with an increase of the edge current. When large ELMs occur, strong perturbations δTe on electron temperature are generated, and propagate inwards on a ballistic timescales, at vburst≈160 m s−1. It is of the order of one third (respectively one ninth) of the curvature (respectively diamagnetic) drift. This propagation looks reminiscent of non-local transport experiments. The perturbation induced by large ELMs can reach the ITB. In this case, δTe increases in the vicinity of the ITB before being strongly damped further inside. Such ELMs also lead to a transient increase of Te gradient at the ITB, which then moves inwards on a diffusive timescale (χ≈3×10−2 m2 s−1) while degrading.
The Relative Impacts of Sibling Relationships on Adolescent Body Perceptions

Abstract The sibling relationship is the longest relationship of the life course and has been found to influence youth adjustment (Dunn, 2002). Given that adolescence is a time of increased body awareness, the authors examined the potential role of siblings’ body conceptions and sibling relationship quality on adolescent body conceptions. In a sample of 101 predominantly White, middle-class adolescent sibling dyads, the authors found that positive sibling relationship quality was associated with higher physical self-worth in adolescents, but that this differed by sibling gender and sibling physical self-worth. Alternatively, negative sibling relationship quality was associated with lower physical self-worth for adolescents, but differed based on birth order, sibling physical self-worth, and adolescent gender.
Thermoelectric and thermal properties of AlInN thin films prepared by reactive radio-frequency sputtering

We have studied the thermoelectric and thermal properties of AlInN targeting a thermoelectric device using nitrides. In a Al 0.57 In 0.43 N thin film, we obtained a minimum value of of 2.2 x 10 -6 m 2 /s for thermal diffusivity and a maximum value of 1.8 x 10 -4 W/mK 2 for power factor.
Direct Optical Modulation of RF Radiation Patterns in a Loaded Dielectric Resonator

Here we demonstrate the direct optical modulation of RF radiation patterns in a high permittivity (ϵ ∼ 80) cylindrical dielectric resonator antenna (DRA) loaded with a silicon superstrate. A hybrid mode (HEM11δ) is excited via microstrip. The far-field radiation pattern is characterized with an angle-dependent RF radiation measurement setup, and the near-field is measured using an optically induced conductance technique. We show that when light is incident upon the superstrate, the optically generated electron-hole-pairs (EHPs) in the silicon superstrate modulate and inhibit the far-field RF radiation. We compare our experimental results with finite element method simulations and show excellent agreement. Finally, we perform a proof of principle experiment to mix optically modulated signals with the baseband RF far-field radiation, paving the pathway for future free space optical/RF hybrid communications setups and modulation schemes as well as phase circuitry-free RF beam shaping and steering.
The use of the ARDL approach in estimating virtual exchange rates in India

This paper applies the autoregressive distributed lag approach to cointegration analysis in estimating the 'virtual exchange rate' (VER) in India. The VER would have prevailed if the unconstrained import demand were equal to the constraint imposed due to foreign exchange rationing and the VER is used to approximate the 'price' of rationed foreign exchange reserves. We highlight the shortcomings of the existing literature in approximating equilibrium exchange rates in a less developed country such as India and propose the VER approach for equilibrium rates, which uses information from an estimated structural model. In this relationship, black market real exchange rate (E U ) is a dependent variable and real official exchange rates (E O ), the ratio of the foreign (r*) to the domestic (r) interest rate (I), and official forex reserves (Q) are explanatory variables. In our estimation, the VERs are higher than E O by about 10% in the short-run and 16% in the long-run.
Postural balance and rifle stability in a standing shooting position after specific physical effort in biathletes

ABSTRACT The aim of the study was to evaluate the effect of maximal specific physical effort on postural balance and rifle stability in biathletes in a standing shooting position. The study included 10 junior elite biathletes. The measurements were taken with the Vicon system and AMTI force platform. Postural balance and rifle stability characteristics were determined at rest as well as 1 and 5 min post maximal specific physical effort which was performed on a ski ergometer and continued until exhaustion. Maximal physical effort exerted a significant effect on all examined postural sway and rifle sway characteristics. The duration of the post-exercise changes was longer than 5 minutes. Higher post-effort rifle sway was observed in the vertical direction than in the across the shooting line direction. Post-effort postural balance impairment in the shooting line was much greater than in the across the shooting line direction. Moreover, a strong correlation was found between postural balance and rifle stability. Maximal physical effort influenced postural balance and rifle stability during aiming. Rifle sway during aiming in a standing shooting position seems to be coordinated with the postural sway of the biathlete’s body. Thus, an increase in postural sway contributes to greater sway and lesser stability of the rifle.
Endemic Severe Fever with Thrombocytopenia Syndrome, Vietnam

Severe fever with thrombocytopenia syndrome (SFTS), a tickborne viral disease, has been identified in China, South Korea, and Japan since 2009. We found retrospective evidence of SFTS virus (SFTSV) infection in Vietnam, which suggests that SFTSV infections also occur in Vietnam, where the virus has not been known to be endemic.
Assessment of spatial-temporal changes in ecological environment quality based on RSEI and GEE: a case study in a demonstration area in the Yangtze River Delta on ecologically friendly development

With the increasing impact of human activities on the natural ecological environment, it is of great significance to realize the dynamic monitoring of ecological quality status and obtain effective change information for sustainable development and regional space ecological environment protection. Based on the remote sensing cloud computing platform of Google Earth Engine (GEE), with the help of remote sensing based ecological index (RSEI) and taking the Landsat Image of a demonstration area in the Yangtze River Delta on ecologically friendly development from 2015 to 2021 as the data source, this paper monitored and evaluated the regional ecological environment quality. The results show that the average value of RSEI in the region decreased from 0.626 to 0.543 from 2015 to 2021, showing a downward trend. Spatially, the areas with good ecological grade are mainly concentrated in Qingpu District of Shanghai, the areas with poor and fair ecological grade are mainly distributed in Wujiang district and the south of Jiashan County in Suzhou City, and the areas with basically unchanged ecological grade mainly include the south of Qingpu District. The GEE platform benefits from its advantages of quick and easy data processing and better availability of remote sensing image data during the research period, which provides a reliable reference for the ecological environment quality assessment of a demonstration area in the Yangtze River Delta on ecologically friendly development.