Miracle-dz/UniFAR-FTUs huggingface dataset:
Ultra-wideband circularly polarized millimeter wave antenna based on adjacent coupled feed

ABSTRACT In order to improve the performance of 5 G Millimeter wave, a new gap-coupled fed ultra-wideband circularly polarized antenna is proposed. Firstly, by fabricating the top structure of the slot antenna ，a C-shaped patch structure can adjust the surface transverse current as well as the longitudinal current to generate circularly polarized waves; then the feed structure at the bottom layer of the antenna is designed and resonance is generated with the top layer of the antenna to expand bandwidth. From the simulation and the measurement results can know that the −10 dB impedance bandwidth of the antenna is 19.21 GHz−45.50 GHz (81.25%); the 3 dB circularly polarized axial ratio (AR) bandwidth is 20.59 GHz−38.33 GHz (60.2%), with ultra-broadband circular polarization performance. The designed antenna has a simple structure, small size, low profile and wide working bandwidth, which can fully include N257, N258 and N261 bands, and has a good application prospect in 5 G communication.
Isolation of multiple electrocardiogram artifacts using independent vector analysis

Electrocardiogram (ECG) signals are normally contaminated by various physiological and nonphysiological artifacts. Among these artifacts baseline wandering, electrode movement and muscle artifacts are particularly difficult to remove. Independent component analysis (ICA) is a well-known technique of blind source separation (BSS) and is extensively used in literature for ECG artifact elimination. In this article, the independent vector analysis (IVA) is used for artifact removal in the ECG data. This technique takes advantage of both the canonical correlation analysis (CCA) and the ICA due to the utilization of second-order and high order statistics for un-mixing of the recorded mixed data. The utilization of recorded signals along with their delayed versions makes the IVA-based technique more practical. The proposed technique is evaluated on real and simulated ECG signals and it shows that the proposed technique outperforms the CCA and ICA because it removes the artifacts while altering the ECG signals minimally.
Generalized μ‐Invariants for Links and Hyperplane Arrangements

We construct a family, HM(k)k⩾ 2, of oriented topological equivalence invariants, for projective configurations of complex hyperplanes with fixed combinatorial pattern. We construct a family, PM(k)k ⩾ 2, of concordance invariants, for classical links with a fixed number of components. The constructions are carried out in the same manner, using the existence of natural additional structures on the nilpotent quotients of the fundamental groups of the complements. We give the explicit computation of the primary and secondary HM and PM invariants. 2000 Mathematical Subject Classification: primary 57M25, 32S50; secondary 20F10, 20F12.
System Dynamics: An Introduction

1. Introduction. 2. Energy and Power Flow in State-Determined Systems. 3. Summary of One-Port Primitive Elements. 4. Formulation of System Models. 5. State Equation Formulation. 6. Energy Transducing System Elements. 7. Operational Methods for Linear Systems. 8. System Properties and Solution Techniques. 9. First- and Second-Order System Response. 10. General Solution of the Linear State Equations. 11. Solution of System Response by Numerical Simulation. 12. The Transfer Function. 13. Impedance-Based Modeling Methods. 14. Sinusoidal Frequency Response of Linear Systems. 15. Frequency Domain Methods. Appendix A - Introduction to Matrix Algebra. Appendix B - Complex Numbers. Appendix C - Partial Fraction Expansion of Rational Functions.
Evaluation of the First-Year Data from an HPV Vaccination Van Program in South Carolina, U.S.

Human papillomavirus (HPV) infections are linked to at least six different types of cancer. The Medical University of South Carolina (MUSC) Hollings Cancer Center (HCC) and Department of Pediatrics leaders identified suboptimal rates of HPV vaccinations in rural and medically underserved communities in South Carolina (SC). To address this major public health problem in SC, they received funding from the HealthyMe/HealthySC (HMHSC) program and HCC to create a statewide community engagement-focused HPV Vaccination Van Program in October 2021. The Program provides HPV vaccinations and other childhood immunizations in school districts and HMHSC health clinics throughout SC, focusing on children aged 9–18 who are eligible for the U.S. Centers for Disease Control and Prevention’s Vaccines for Children Program. As of 14 December 2022, the Program administered vaccinations in 16 counties of SC to 552 participants, 243 of whom received HPV vaccinations and were predominantly female (57.2%), aged 4–18 (95.9%), and self-identified as White (44.0%), Black (33.2%), or Hispanic/Latino (15.1%). Most had Medicaid (53.1%)/no insurance coverage (25.1%). The Program is expected to expand as the Program’s relationship with SC’s school districts grows. The Program provides a model for delivering mobile HPV vaccinations to rural children, thus reducing their cancer risk.
An Improved Link Prediction Approach for Directed Complex Networks Using Stochastic Block Modeling

Link prediction finds the future or the missing links in a social–biological complex network such as a friendship network, citation network, or protein network. Current methods to link prediction follow the network properties, such as the node’s centrality, the number of edges, or the weights of the edges, among many others. As the properties of the networks vary, the link prediction methods also vary. These methods are inaccurate since they exploit limited information. This work presents a link prediction method based on the stochastic block model. The novelty of our approach is the three-step process to find the most-influential nodes using the m-PageRank metric, forming blocks using the global clustering coefficient and, finally, predicting the most-optimized links using maximum likelihood estimation. Through the experimental analysis of social, ecological, and biological datasets, we proved that the proposed model outperforms the existing state-of-the-art approaches to link prediction.
Quasi-phase-matched parametric interactions in proton-exchanged lithium niobate waveguides

We present a review of parametric fluorescence with bulk and guided geometries in quasi-phase matched lithium niobate. Whereas bulk experiments have yielded results close to theoretical predictions, waveguided versions have shown strongly reduced efficiencies. Attributing the observed conversion efficiency reductions to a loss of the material nonlinearity, to a destruction of the inverted domains during the waveguide fabrication, or to both, we carefully studied the influence of the proton-exchange process on the nonlinear and structural properties of the periodically poled lithium niobate. We found that an annealed proton-exchange process can essentially conserve the nonlinearity but will erase the periodic domain structure. This erasure can be avoided by use of a highly diluted proton-exchange melt. This direct proton-exchange process perfectly preserves all the nonlinear optical and structural properties of periodically poled LiNbO3.
Breakup Processes of Liquid Jets in Subsonic Crossflows

The breakup processes of liquid jets injected into subsonic air crosse ows were experimentally studied. Test liquids, injector diameters, and air Mach numbers were varied to provide a wide range of jet operation conditions. Results indicate that for larger injection velocity conditions liquid jets penetrate relatively far into the crosse ows and exhibit surface breakup processes before the column breaks. Liquid column trajectories were correlated by liquid/air momentum e ux ratios based on a force analysis of a cylindrical liquid element subjected to an aerodynamic drag force. Drag coefe cients were inferred from the column trajectories and were found to exhibit a weak dependence on liquid viscosity. The heights of the column fracture points were correlated using the time required for an analogous droplet to complete an aerodynamic secondary breakup process. The success of the resulting correlation justie es the assumption that the aerodynamic forces acting on a droplet and those acting on a liquid column have similar effects. This result, combined with the trajectory correlation, leads to the conclusion that the liquid column always breaks at the same streamwise location, in agreement with the present experimental observation.
A sensitivity analysis on the parameter of the GLS method for a second‐gradient theory of incompressible flow

Using a non‐conforming C0‐interior penalty method and the Galerkin least‐square approach, we develop a continuous–discontinuous Galerkin finite element method for discretizing fourth‐order incompressible flow problems. The formulation is weakly coercive for spaces that fail to satisfy the inf‐sup condition and consider discontinuous basis functions for the pressure field. We consider the results of a stability analysis through a lemma which indicates that there exists an optimal or quasi‐optimal least‐square stability parameter that depends on the polynomial degree used to interpolate the velocity and pressure fields, and on the geometry of the finite element in the mesh. We provide several numerical experiments illustrating such dependence, as well as the robustness of the method to deal with arbitrary basis functions for velocity and pressure, and the ability to stabilize large pressure gradients. We believe the results provided in this paper contribute for establishing a paradigm for future studies of the parameter of the Galerkin least square method for second‐gradient theory of incompressible flow problems. Copyright © 2015 John Wiley & Sons, Ltd.
New developments in testing probabilistic models

Abstract This article summarizes a number of features of probabilistic models providing additional diagnostic information on participants to supplement estimates of ability or other attributes. These features are commonly referred to as fit diagnostics (Molenaar, 1983). Fit diagnostics provide additional information as to how a model fails to predict certain individual responses. Instead of discussing the drawbacks of classical test theory (available extensively in a number of other articles), the relevance and use of additional diagnostic information is outlined. The article focuses on the accuracy of estimation for models with categorical and continuous latent variables, and on the appropriateness of measurement for a broad class of models.
Dynamic stability of dressed condensate mixtures

We analyze the dynamical stability of common spatial, or breathe-together, modes for a system of two trapped interacting Bose-Einstein condensates, when the condensates are resonantly coupled by a strong driving field. We show analytically that the dynamical stability is governed by a set of dressed atom collision parameters, and that the driving field typically destabilizes breathe-together modes which are stable in the absence of driving and vice versa. By means of numerical solutions we illustrate the consequences of this phenomenon for a number of interacting condensates consisting of pairs of ground hyperfine states of both sodium and rubidium
Nanoparticle surface stabilizing agents influence antibacterial action

The antibacterial properties of nanoparticles are of particular interest because of their potential to serve as an alternative therapy to combat antimicrobial resistance. Metal nanoparticles such as silver and copper nanoparticles have been investigated for their antibacterial properties. Silver and copper nanoparticles were synthesized with the surface stabilizing agents cetyltrimethylammonium bromide (CTAB, to confer a positive surface charge) and polyvinyl pyrrolidone (PVP, to confer a neutral surface charge). Minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and viable plate count assays were used to determine effective doses of silver and copper nanoparticles treatment against Escherichia coli, Staphylococcus aureus and Sphingobacterium multivorum. Results show that CTAB stabilized silver and copper nanoparticles were more effective antibacterial agents than PVP stabilized metal nanoparticles, with MIC values in a range of 0.003 μM to 0.25 μM for CTAB stabilized metal nanoparticles and 0.25 μM to 2 μM for PVP stabilized metal nanoparticles. The recorded MIC and MBC values of the surface stabilized metal nanoparticles show that they can serve as effective antibacterial agents at low doses.
Neurovascular Unit Compensation from Adjacent Level May Contribute to Spontaneous Functional Recovery in Experimental Cervical Spondylotic Myelopathy

The progression and remission of cervical spondylotic myelopathy (CSM) are quite unpredictable due to the ambiguous pathomechanisms. Spontaneous functional recovery (SFR) has been commonly implicated in the natural course of incomplete acute spinal cord injury (SCI), while the evidence and underlying pathomechanisms of neurovascular unit (NVU) compensation involved in SFR remains poorly understood in CSM. In this study, we investigate whether compensatory change of NVU, in particular in the adjacent level of the compressive epicenter, is involved in the natural course of SFR, using an established experimental CSM model. Chronic compression was created by an expandable water-absorbing polyurethane polymer at C5 level. Neurological function was dynamically assessed by BBB scoring and somatosensory evoked potential (SEP) up to 2 months. (Ultra)pathological features of NVUs were presented by histopathological and TEM examination. Quantitative analysis of regional vascular profile area/number (RVPA/RVPN) and neuroglial cells numbers were based on the specific EBA immunoreactivity and neuroglial biomarkers, respectively. Functional integrity of blood spinal cord barrier (BSCB) was detected by Evan blue extravasation test. Although destruction of the NVU, including disruption of the BSCB, neuronal degeneration and axon demyelination, as well as dramatic neuroglia reaction, were found in the compressive epicenter and spontaneous locomotor and sensory function recovery were verified in the modeling rats. In particular, restoration of BSCB permeability and an evident increase in RVPA with wrapping proliferated astrocytic endfeet in gray matter and neuron survival and synaptic plasticity were confirmed in the adjacent level. TEM findings also proved ultrastructural restoration of the NVU. Thus, NVU compensation changes in the adjacent level may be one of the essential pathomechanisms of SFR in CSM, which could be a promising endogenous target for neurorestoration.
Hybrid fusion and demosaicing algorithm with near-infrared image

In this paper, we propose a unified framework for color filter array (CFA) interpolation and visible/NIR image combination. The proposed method aims to reconstruct a high quality image from raw CFA data and the corresponding NIR image, similar to a multi-spectral fusion of color and NIR images. Based on NIR image, we impose a sparse constraint of gradient difference to modify the traditional color interpolation. The experiments indicate the effectiveness of our hybrid scheme to acquire joint color and NIR information in real-time, and show that this hybrid process can generate a better color image when compared with treating interpolation and fusion separately.
Galactic bulge M giants. III, Near-infrared spectra and implications for the stellar content of E and S0 galaxies

Les observations spectroscopiques IR-proche de 320 geantes K et M de 6 champs a faible absorption le long de l'axe mineur du bulbe galactique et de 60 naines et geantes de type avance du voisinage solaire sont presentees. L'abondance en metal moyenne des geantes M du bulbe et les contraintes sur la contribution relative des naines et geantes de type avance sur la lumiere integree des galaxies E et S0 sont estimees a partir des indices de force des bandes d'absorption moleculaire et de donnees photometriques optiques et IR.
Amorphous FeCoSiB for exchange bias coupled and decoupled magnetoelectric multilayer systems: Real-structure and magnetic properties

The effect of field annealing for exchanged biased multilayer films is studied with respect to the resultant structural and magnetic film properties. The presented multilayer stacks comprise repeating sequences of Ta/Cu/{1 1 1} textured antiferromagnetic Mn70Ir30/amorphous ferromagnetic Fe70.2Co7. 8Si12B10. Within the ferromagnetic layers crystalline filaments are observed. An additional Ta layer between the antiferromagnet and ferromagnet is used in order to investigate and separate the influence of the common Mn70Ir30/Fe70.2Co7. 8Si12B10 interface on the occurring filaments and structural changes. In situ and ex situ transmission electron microscopy is used for a comprehensive structure characterization of multilayer stacks for selected temperature stages. Up to 250 °C, the multilayers are structurally unaltered and preserve the as-deposited condition. A deliberate increase to 350 °C exhibits different crystallization processes for the films, depending on the presence of crystal nuclei within the amorphou.
OPTICAL STUDIES OF THE CRAB NEBULA-LINE EMISSION COMPONENT

“On a chi-chhou day in the fifth month of the first year of the Chih-Ho reign period a ‘guest star appeared at the SE of ThienKuan, measuring several inches (tshun). After more than a year it faded away. ” So says the Chinese historian Toktaga in his Sung Shih (Histoiy of the Sung Dynasty (Ho Peng Yoke 1962)). Now the people who know about such things (Duyvendak 1942) tell us that the chi-chhou day of the fifth month of the first year of the period Chih-Ho was July 4, 1054 and that Thien-Kuan was in the vicinity of £ Tauri. If you look today (1969) a little more than a degree northwest of £ Tauri, you will see something that looks like Plate I, with the following reservations: First, the plate is printed in accordance with the astronomical tradition which regards the sky as white and stars as black. Second, the human eye is sensitive to a range of several thousand Angstroms, peaked near 5000 Â, while the photograph was taken through an interference filter having a 100 Â bandpass, centered at Ha (A 6548). And, of course, the arrows aren’t really there. It is well known that the Crab nebula is expanding. This can readily be seen from a picture like Plate II, which is a superposition of a positive of a plate taken in 1950 and a negative of a plate taken
Existence of Markov Controls and Characterization of Optimal Markov Controls

Given a solution of a controlled martingale problem it is shown under general conditions that there exists a solution having Markov controls which has the same cost as the original solution. This result is then used to show that the original stochastic control problem is equivalent to a linear program over a space of measures under a variety of optimality criteria. Existence and characterization of optimal Markov controls then follows. An extension of Echeverria's theorem characterizing stationary distributions for (uncontrolled) Markov processes is obtained as a corollary. In particular, this extension covers diffusion processes with discontinuous drift and diffusion coefficients.
Impact of the development of information society on healthcare efficiency: Empirical evidence from 31 Chinese provinces

The development of information society has deeply changed the style of the healthcare service delivery and medical information access. This study aims to investigate how the information society development affects the efficiency of healthcare system in China, and explore provincial disparities in the impact. Based on the two-stage Data Envelopment Analysis (DEA) framework, this paper uses a panel data from 31 Chinese provinces from 2014 to 2017 to estimate efficiency of healthcare service and analyze the influence of the development of information society on efficiency. With the information society index (ISI) increased from 0.423 to 0.488 during the sample period, the healthcare efficiency experienced a slight decrease from 0.892 to 0.869. Moreover, the pure technical efficiency (PTE) is much lower than the scale efficiency (SE), and thus is the key to enhance the overall technical efficiency (TE). The time-fixed Tobit regression analysis suggests that information society development leads to a significant increase in PTE, but results in a decrease in SE, and therefore has little effect on TE. Further analysis reveals that the impact differs sharply between low-efficiency and high-efficiency provinces. For the low-efficiency provinces, the TE increases significantly with the development of the information society, mainly due to a considerable increase in PTE. In contrast, the TE decreases for the high-efficiency provinces, mainly caused by a decrease in SE. This paper highlights the importance of information infrastructure investment in healthcare system and the application of emerging information technologies to breakout the time and space boundaries of healthcare services in improving overall efficiency. In inefficient provinces, it is also necessary to properly control the growth of healthcare inputs.
Online Shopping Behaviour in Youth: A Systematic Review of The Factors Influencing Online Shopping in Young Adults

This is a conceptual paper. The goal of this conceptual study is to investigate the internet buying habits of young adults. Online shopping has evolved into a global phenomenon. We always buy products online rather than in stores since it is more convenient. This demonstrates how easy access to the internet can help people locate the best goods and services at the best prices, options, and deals via their electronic devices. A lot of causes are driving the growth of internet purchases. This is because of the lower prices; people are beginning to utilise the internet to shop. It is less expensive and easier to research products and services online before making a purchase. Also, online cashless transactions allow us to shop from home and have products delivered by courier, saving our time and effort. Five factors influencing young individuals' decision to shop online and their behaviour were investigated. In this study, a systematic review was used as the research method. This conceptual article examined and compiled data from 15 research works on the topic of young adult online purchasing behaviour. Online shopping is frequently simple and allows young adults to find several items that they would not be able to get at the nearest physical store, which is the most obvious convenience aspect that drives them to do so. Furthermore, it has been demonstrated that young people's engagement in internet shopping. Empirical research may also be utilised to find similarities and differences in the views, attitudes, and purchasing behaviours of internet shoppers from foreign countries.
COMBINATORICS OF ARC DIAGRAMS, FERRERS FILLINGS, YOUNG TABLEAUX AND LATTICE PATHS

Several recent works have explored the deep structure between arc diagrams, their nestings and crossings, and several other combinatorial objects including permutations, graphs, lattice paths, and walks in the Cartesian plane. This thesis inspects a range of related combinatorial objects that can be represented by arc diagrams, relationships between them, and their connection to nestings and crossings. We prove a direct connection between nestings in involutions and the shape of Young tableaux, clarify Knuth transformations in terms of Young tableaux, present a local transformation on arc diagrams of involutions that we term involutive transformations, and describe variants to the well-known RSK correspondence.