Miracle-dz/UniFAR-FTUs huggingface dataset:
Aspect angle dependence of mean Doppler velocities of 1‐m auroral plasma waves

The mean phase velocity of 1-m unstable plasma waves, excited by the two-stream instability in the auroral E region, has been measured as a function of aspect angle. The normalized function is consistent with the predicted variation of the phase velocity at threshold of the instability. To reconcile the observations with theoretical predictions of the functional relationship for excitation far beyond threshold, an effective electron collision frequency 6 times the electron-neutral collision frequency is required.
Observational Collective Efficacy Scale for Sport (OCESS): Validity and Reliability Study of the Turkish Form

The study aimed to analyze the Observational Collective Efficacy Scale for Sport (OCESS). 242 Turkish athletes and 85 Turkish coaches participated in the study. After performing the first step for the language validity of the scale by using the translation-back translation method, it was sent to the athletes as an online form. Athletes responded to the items voluntarily. KMO and Bartlett’s test of sphericity values were calculated to determine whether the data was proper for factor analysis. The initial factor structure of the scale was tested with CFA. While the Pearson correlation test was used for criterion-related validity, the internal consistency coefficient was calculated with Cronbach’s alpha. While KMO was found to be 0.84, Bartlett’s test of sphericity was statistically significant. The item factor loadings ranged between 0.64 and 0.88. In sum, the Turkish version of the OCESS presents acceptable psychometric properties and may be used to assess athletes’ collective efficacy beliefs in team sports repeatedly.
Truncation and acceleration of the Tian tree for the pricing of American put options

We present a new method for truncating binomial trees based on using a tolerance to control truncation errors and apply it to the Tian tree together with acceleration techniques of smoothing and Richardson extrapolation. For both the current (based on standard deviations) and the new (based on tolerance) truncation methods, we test different truncation criteria, levels and replacement values to obtain the best combination for each required level of accuracy. We also provide numerical results demonstrating that the new method can be 50% faster than previously presented methods when pricing American put options in the Black–Scholes model.
Local plasmon photonic transistor

A proposal for a photonic transistor is made and some basic proving experiments are described. These experiments show that by focusing two laser beams (405 and 635 nm) in one small spot on a high-speed rotating optical disk, a large signal enhancement is observed. It was found that a plasmon interaction generated between a silver light-scattering center and recorded small marks in the optical disk with a super-resolution near-field structure produced the large signal amplification in the spot (<1 μm). A modulated signal of the blue laser was enhanced by 60 times by controlling the red laser power from 1.5 to 3.5 mW. It has been shown that the system has the potential to realize all-thin-films photonic transistors by using local plasmon amplification.
Forbidden lines of the solar corona and transition zone: 975--3000 A

New forbidden lines characteristic of 5 x 10/sup 4/--3 x 10/sup 6/ K plasmas are observed in ATM UV spectra. New identifications, accurate wavelengths, ionization classes, intensities, and half-widths are presented. Coronal blends with He II lambda1640 are noted. Variations in nonthermal velocities with limb distance are observed. Doppler shifts in the coronal lines observed on the disk may be related to the solar wind. The coincidence of two lines with F IV(/sup 3/P--/sup 5/S) is first evidence for atomic fluorine in the Sun.
Digital Marketing in The Hospital: A Scoping Review

Introduction: Hospitals know smart users better through digital marketing than traditional marketing. The goal of hospital marketing is to assess and understand potential patients' needs and wants so they can meet those needs at the highest level. The Internet, email, and social media are cheaper than direct marketing and can create opportunities to market services to virtual customers, bridge the gap and increase their awareness of the services offered everywhere. This paper aims to determine the effect of digital marketing in hospitals. Method: This scoping review followed a systematic review's study selection process. Relevant studies were collected from Open Knowledge Maps and Google Scholar. Result: The results of this study indicate that some information related to the implementation of digital marketing has challenges. Therefore, there is a need for innovation in implementing digital marketing. In addition, the use of hospital applications can be used in online registration media and media marketing. During the pandemic, hospitals need innovative marketing strategies to attract new patients, expand the business, increase customer trust, and strengthen loyalty. Conclusion: digital marketing media significantly impact sales promotion, business expansion, and service quality.
Attitudes and preferences toward the adoption of voice-controlled intelligent personal assistants: evidence from Croatia

Purpose – The primary goal of this paper was to explore the current level of voice-controlled intelligent personal assistant (IPA) adoption in a non-English speaking European country. This relatively novel technology exhibited immense growth in recent years, both on smartphones and as standalone devices with yet insufficiently explored usage patterns and implications associated with the internet of things (IoT) concept. Design/methodology/approach – The main research focus was set on attitudes and perceptions of users and non-users related to benefits and barriers of IPA adoption, privacy and security issues, trust as well as mobile phone usage patterns, motivators, and associated smartphone digital literacy. The research was conducted on a sample (N=310) of Croatian mobile phone users utilizing an online survey and an adopted research framework. Findings – Based on the collected data, the adoption rate of IPA was generally low but present, nevertheless. IPA users tend to use such devices for fun and convenience, utilizing its hands-free capabilities along with personalized tasks and information-seeking options. In contrast, IPA non-users suggested that the main barriers to IPA adoption were low perceived usefulness and functionality issues in addition to lack of usage habit and related lack of experience. Originality/value - This paper provides an examination of the differences between IPA users and non-users as well as an overview of (non-)user perception related to privacy and security issues associated with IPA and trust in companies' appropriate use of IPA-generated data.
Use of polarization for cloud study

POLDER has been launched on the Japanese ADEOS platform in August 1996. Due to its multi-directional, multispectral and multi-polarization capabilities, this new radiometer gives useful information on the clouds and on their influence on the radiation in the shortwave range. The POLDER bidirectional observation capability provides the polarization signatures within a large range of scattering angles in three spectral bands centered on 443, 670 and 865 nm with a spatial resolution of 7km X 7km. These original features allow to obtain some information both on cloud thermodynamic phase and even on the cloud microphysic of particles. Cloud phase recognition is important for cloud studies. Ice crystals correspond to physical process and properties that differ from those of liquid water drops. The angular POLDER airborne observations, liquid cloud droplets exhibit the very specific polarization features of the rainbow for scattering angels near 140 degrees. Conversely, according to theoretical studies and also to airborne measurements, scattering by various crystalline particles all show that the rainbow characteristics disappear as soon as the particles depart from the spherical shape. In the paper, preliminary results about cloud observations using polarized light measured by the spaceborne version of POLDER are presented, with emphasis on cloud phase detection and microphysic retrieval.
Structural Investigation of Methane Hydrate Sediments by Microfocus X-ray Computed Tomography Technique under High-Pressure Conditions

The structure of natural gas hydrate sediments was observed by microfocus X-ray computed tomography (CT). A newly developed high-pressure vessel for the microfocus X-ray CT system was applied to observe the sediments at a temperature above 273 K and under high-pressure conditions. The obtained two-dimensional CT images clearly showed the spatial distribution of the free-gas pore, sand particles, water, and hydrates. These results demonstrated that microfocus X-ray CT can be effective for studying natural gas hydrate sediment samples.
Biomagnetic fluid flow in the presence of a line dipole

Purpose – The purpose of this paper is to investigate the effect of a magnetic field on the flow of a biomagnetic fluid.Design/methodology/approach – The flow takes place in a straight circular duct and the magnetic field is produced by a line dipole placed perpendicularly to the longitudinal axis of the duct.Findings – The numerical results show that the magnetic field affects the characteristics of the flow, the velocity components and the friction factor, even for medium field intensity. A relation is proposed for the maximum and minimum longitudinal pressure drop in the pipe.Originality/value – From the present results it is obtained that it is important to take into account the magnetic properties of blood in the various applications that involve blood flow in the presence of a magnetic field.
Active Control of Structures Using Neural Networks

A new neural-network-based control algorithm has been developed and tested in the computer simulation of active control of a three-story frame structure subjected to ground excitations. First, an emulator neural network has been trained to forecast the future response of the structure from the immediate history of the system's response, which consists of the structure plus an actuator. The trained emulator has been used in predicting the future responses and in evaluating the sensitivities of the control signal with respect to those responses. At each time step of the simulation, the control signal has been adjusted to induce the required control force in the actuator based in a control criterion. A controller neural network has been trained to learn the relation between the immediate history of response of the structure and actuator, and the adjusted control signals. The trained neurocontroller has been used in controlling the structure for different dynamic loading conditions. Results of this initial st.
Roles of exercise treadmill test in the diagnosis & risk stratification of cardiac channelopathies

Channelopathies are the leading causes of sudden cardiac death in patients without structural heart disease. Missing the diagnosis of high-risk but concealed channelopathies could have lethal clinical consequences. However, the diagnosis of channelopathies is often challenging due to the dynamic clinical presentations and elusive electrocardiographic manifestations of these diseases. An integrated approach including clinical assessment, repeated electrocardiography, drug provocation tests, exercise stress test and genetic studies is often required for establishing the diagnosis. Pharmacological provocation testing may have limited sensitivity and may be associated with false positive results. Inju-dicious use of genetic testing is not recommended due to its relatively low yield, limited cost-effectiveness and availability. Variants of unknown signi ﬁ cance could complicate interpretation of genetic ﬁ ndings. This review article focuses on the role of exercise stress testing in the diagnosis and risk strati ﬁ cation of patients with Brugada syndrome, long QT syndrome and catecholaminergic polymorphic ventricular tachycardia.
Eta carinae and its environment

▪ Abstract Eta Carinae (Eta) is one of the most remarkable of all well-studied stars and perhaps the most poorly understood. Observations with the Hubble Space Telescope and other modern instruments have solved a few of the mysteries concerning this object while opening a comparable number of new ones. In this review we first recount some essential background information concerning Eta, then we sketch most of the observational developments of the past few years, related to the star itself and to its ejecta. Throughout, we propose a series of specific unsolved observational and theoretical problems that seem especially interesting or important at this time.
The biosynthesis of zinc oxide nanoparticles using aqueous leaf extracts of Cnidoscolus aconitifolius and their biological activities

ABSTRACT This study aims to biosynthesize zinc oxide nanoparticles using aqueous leaf extracts of Cnidoscolus aconitifolius and investigate their biological activities. UV–Vis Spectroscopy, FT-IR, SEM and TEM were used for characterization. The antioxidant properties were determined using H2O2, NO, ABTS, FRAP and DPPH scavenging assays. For anti-inflammatory activities, membrane stabilization, albumin denaturation and proteinase inhibitory activity were assayed. The antibacterial effect was tested using well diffusion method. Statistical analyses were done using ANOVA. Synthesized nanoparticles showed an intensity peak at 378 nm in UV–Vis Spectroscopy. FT-IR shows the presence of O-H stretching, C = C bending, O-H bending and C–N stretching functional groups of the stabilizing action of the plant extract on the surface of the nanoparticles. NPs were shown to be spherical by SEM analysis, and the sizes were 100 nm by TEM analysis. The antioxidant properties of ZnO NPs compared to ascorbic acid standard showed significant antioxidant potential in H2O2, NO, ABTS, FRAP and DPPH scavenging assays. ZnO NPs showed excellent anti-inflammatory activity with the synthesized ZnO NPs performing better in membrane stabilization. Clinical pathogens were inhibited by ZnO NPs when compared with Cefuroxime, a standard drug. These efficient biological activities could be utilized in several biological applications. GRAPHICAL ABSTRACT
Two‐dimensional device modeling and analysis of GaInAs metal–semiconductor–metal photodiode structures

A two‐dimensional self‐consistent time‐dependent simulation technique has been developed to investigate electron‐hole transport processes in the active region of metal–semiconductor–metal (MSM) interdigitated photodiode structures and to analyze their high‐speed response. The distribution of the electric field inside the MSM device is determined by numerically solving the two‐dimensional Poisson’s equation by the modified fast elliptic solver method. A set of superparticles photogenerated at a particular wavelength is analyzed with a given initial distribution of the potential and given boundary conditions, and the evolution of the particles is traced in time through the active region of the MSM device. Circuit loading, electric field effects in the MSM structure with various finger separations, background doping, carrier trapping, and recombination are included in the simulation program. Owing to miniaturization of devices, the classical scaling laws lose their validity while various performance degradin.
The effects of radiation drag on radial, relativistic hydromagnetic winds

The effects of drag on an idealized relativistic MHD wind of radial geometry are studied. The astrophysical motivation is to understand the effects of radiation drag on the dynamics of a jet or wind passing through the intense radiation field of an accreting compact object. From a critical point analysis, it is found that a slow magnetosonic point can appear in a dragged flow even in the absence of gravitational force, as a result of a balance between the drag force and the combination of thermal pressure and centrifugal forces. As in the undragged case, the Alfven point does not impose any constraints on the flow. Although it is formally possible for a dragged flow to possess more than one fast magnetosonic point, it is shown that this is unlikely in practice. In the limit of a 'cold', centrifugally driven flow, it is shown that the fast magnetosonic point moves to infinite radius, just as in the drag-free case. For a given mass flux, the total energy output carried to infinity, and the final partition between the kinetic energy and the Poynting flux, are the same for the dragged and the drag-free flows. The main effects of radiation drag are to increase the amount of energy and angular momentum extracted from the source and to redistribute the regions where acceleration occurs in the flow. This is accomplished through the storage and release of magnetic energy, as a result of additional winding and compression of the field caused by the action of the drag. For a relativistic wind, the dissipated energy can exceed the final kinetic energy of the flow and may be comparable to the total flow energy (which is dominated by Poynting flux). The energy lost to radiation drag will appear as a Doppler-boosted beam of scattered radiation, which could dominate the background radiation if the flow is well-collimated.
Simultaneous temperature and flux controllability for heat equations with memory

It is known that, in the case of heat equation with memory, temperature can be controlled to an arbitrary square integrable target provided that the system evolves for a sufficiently long time. The control is the temperature on the boundary. In this paper we consider heat equations with memory (one dimensional space variable) and we first show that when the control is square integrable then the flux is square integrable too. Then we prove that both temperature and flux can be simultaneously controlled to a pair of independent targets, both square integrable. This solves a problem first raised by Renardy. The method of proof relies on moment theory and one of the contributions of this paper is the identification of $\mathcal{L} $-bases and Riesz bases especially suited to heat equations with memory, which so appear to be endowed with a very rich bases structure.
Semi-autonomous UAV/UGV for dismounted urban operations

Dismounted soldiers are clearly at the centre of modern asymmetric conflicts and unmanned systems of the future will play important roles in their support. Moreover, the nature of modern asymmetric conflicts requires dismounted soldiers to operate in urban environments with challenges of communication and limited situational awareness. To improve the situational awareness of dismounted soldiers in complex urban environments, Defence R&D Canada - Suffield (DRDC Suffield) envision Unmanned Air Vehicles (UAV) rotorcraft and Unmanned Ground Vehicles (UGV) cooperating in the battlespace. The capabilities provided to the UAV rotorcraft will include high speed maneuvers through urban terrain, overthe- horizon and loss of communications operations, and/or low altitude over-watch of dismounted units. This information is shared with both the dismounted soldiers and UGV. The man-sized, man-mobile UGV operates in close support to dismounted soldiers to provide a payload carrying capacity. Some of the possible payloads include chemical, biological, radiological and nuclear (CBRN) detection, intelligence, surveillance and reconnaissance (ISR), weapons, supplies, etc. These unmanned systems are intended to increase situational awareness in urban environments and can be used to call upon nearby forces to react swiftly by providing acquired information to concentrate impact where required.
Some Results on Multivariate Symmetric Wavelet Systems

We provide the theoretical results for the construction of special classes of biorthogonal multivariate wavelet systems. In particular, by making use of the parameterization given by the lifting scheme, we show how certain properties of the filters, which are desirable in many applications, can be reproduced, namely symmetry with respect to some symmetry group and sum rules/vanishing moments conditions.
Rapid dephasing related to intersubband transitions induced by exciton quantum beats observed by a pump-probe technique in a GaAs/AlAs multiple quantum well

We discuss the dephasing of quantum beat oscillation related to the intersubband transition between heavy-hole and light-hole excitons in a GaAs/AlAs multiple quantum well as measured by a pump-probe technique. We investigate the dependence of dephasing on temperature and pump energy. The analysis of the time-domain signals reveals that a strong quantum beat induces the rapid dephasing related to intersubband transition; the dependencies of the dephasing rate correspond to those of the amplitude. This implies that a quantum beat is useful in applications utilizing an ultrafast optical response.
Real-time correction of geometric distortion artefacts in large-volume optical coherence tomography

Large-volume optical coherence tomography (OCT) setups employ scanning mirrors and suffer from geometric distortion artefacts in which the degree of distortion is determined by the maximum angles over which the mirrors rotate. In this note, we describe a straightforward coordinate transformation scheme to correct for these artefacts in three dimensions, creating an alternative to previously reported ray-tracing schemes. We demonstrate that this recalibration procedure can be applied in real time by implementing the proposed algorithm on the graphics card of a standard computer, making it useful for topography applications. The accuracy of the proposed calibration procedure is validated over an imaging volume of 12.35×10.13×2.36 mm3 using optical moiré measurements of a highly curved object.
Refuelling performance improvement by high speed pellet launch from the magnetic high field side

Limited available pellet velocities have so far restricted the refuelling performance of efficient launch schemes from the tokamak magnetic high field side (HFS). Although pellet injection during H mode has resulted in more peaked density profiles and enhanced performance with respect to gas puff refuelling, prompt particle and energy losses caused by pellet induced ELM bursts have still limited the extension of the operational area. Now, the preliminary version of a new optimized pellet injection set-up at ASDEX Upgrade allows for significantly higher injection speeds when launching pellets from the magnetic HFS. Intact pellets with velocities up to vP = 560 m/s were successfully injected instead of the vP = 240 m/s available with the previous set-up. The velocity increase results in a deeper pellet penetration and seems to follow the vP1/3 scaling derived from a multimachine study using conventional pellet launch from the torus outside. The inward shift of the pellet particle deposition profile with respect to the penetration depths turned out to be approximately the same for both launch velocities. The respectively achieved deeper particle deposition inside the plasma column reduced the particle and energy loss rates during the immediate post-pellet phase. Thus, further enhancement of tokamak operation in the high density regime seems feasible by means of high speed pellets launched from the torus inner side.
Optical properties of Ag-coated GaN/InGaN axial and core–shell nanowire light-emitting diodes

In this work, we utilize the finite difference time domain method to investigate the Purcell factor, light extraction efficiency, the near field electric field intensity, and cavity quality factors of a variety of light-emitting diode structures based on Ag-coated GaN/InGaN core–shell and axial nanowires. We focus on structures with the potential for electrical injection and analyze the potential for these structures to achieve high modulation bandwidths based on their Purcell factors, quality factors, and natural carrier lifetimes.