The current study investigated the relationship between COVID-19 prevention burnout and emotional symptoms (depression and anxiety) among 1,837 Chinese college students and the underlying mechanisms. ...Results from moderated mediation analysis revealed that the association between COVID-19 prevention burnout and emotional symptoms was mediated by psychological inflexibility (β = 0.20, 95%CI = 0.10, 0.19). Also, COVID-19 prevention burnout’s direct and indirect effects on emotional symptoms were more substantial for students with high susceptibility to emotional contagion than those with low susceptibility. These findings contribute to understanding how COVID-19 prevention burnout relates to emotional symptoms and provide a new perspective for interventions promoting students’ psychological flexibility, particularly those with higher susceptibility to emotional contagion.
Healthcare service satisfaction focuses not only on the patients but also on the caregivers' perspectives. This study explored how caregivers' empathy toward patients affects their satisfaction with ...healthcare services through an electroencephalography (EEG) experiment. EEG mu rhythm was used as the neural indicator to reflect empathy. The results showed that empathy reduces caregivers' evaluation of healthcare service satisfaction because they share suffering with the patients. However, implementing physician-patient communication through a process-based informed consent (IC), compared to an event-based IC, can effectively alleviate such adverse effects.
Message framing plays an important role in advertising strategies and has been studied from various perspectives in different behavioral researches. In this study Event Rated Potentials technique ...helped to examine the neural mechanism of message framing effect on self-conscious emotions of pride and guilt regarding consumer purchase intention in the context of green marketing. Behavioral results showed that participants ranked higher on positive framing compared to negative framing. ERP results declared that N1 component was elicited by positive framed message with emotion of pride and guilt, reflecting use of attentional resources to acquire potential benefits at first stage of processing emotional information. At the second stage P2 was higher for negative framing containing pride and guilt slogan, showing more attention towards processing emotional information about potential loss. At the third stage LPP component portray that both positive and negative framing is supported by guilt emotion when processing emotional information in decision making. Our results delivered strong evidence that how purchase intention can be mediated by message framing under the pride and guilt emotions in the context of green marketing.
Degraded images often suffer from low contrast, color deviations, and blurring details, which significantly affect the performance of detectors. Many previous works have attempted to obtain ...high-quality images based on human perception using image enhancement algorithms. However, these enhancement algorithms usually suppress the performance of degraded object detection. In this paper, we propose a task-oriented image enhancement network (TIENet) to directly improve degraded object detection’s performance by enhancing the degraded images. Unlike common human perception-based image-to-image methods, TIENet is a zero-reference enhancement network, which obtains a detection-favorable structure image that is added to the original degraded image. In addition, this paper presents a fast Fourier transform-based structure loss for the enhancement task. With the new loss, our TIENet enables the structure image obtained to enhance more useful detection-favorable structural information and suppress irrelevant information. Extensive experiments and comprehensive evaluations on underwater (URPC2020) and foggy (RTTS) datasets show that our proposed framework can achieve 0.5–1.6% AP absolute improvements on classic detectors, including Faster R-CNN, RetinaNet, FCOS, ATSS, PAA, and TOOD. Besides, our method also generalizes well to the PASCAL VOC dataset, which can achieve 0.2–0.7% gains. We expect this study can draw more attention to high-level task-oriented degraded image enhancement. The code and pre-trained models are available at
https://github.com/BIGWangYuDong/lqit/tree/main/configs/detection/tienet
.
Abstract
Magnetic skyrmions, whose shapes are ellipse due to the presence of anisotropic Dzyaloshinskii–Moriya interaction (DMI), have already been discovered in experiments recently. By using ...micromagnetic simulations, we discuss the ground state and the spin-wave modes of a single elliptical skyrmion in a confined nanodot. It is found that the shapes of skyrmion are stretched into a horizontal ellipse, vertical ellipse, or stripe shape under different strengths of anisotropic DMI. When elliptical skyrmions are excited by in-plane ac magnetic fields, the spin-wave mode contains a counterclockwise rotation mode at high frequencies and a clockwise (CW) rotation mode at low frequencies, and the CW mode depends on the strength of anisotropic DMI. When elliptical skyrmions are excited by out-of-plane ac magnetic fields, the spin-wave mode is split from a simple breathing mode into two complex breathing modes, including a mixed mode of CW rotation and breathing, and another anisotropic breathing mode. Our results provide an understanding of the rich spin-wave modes for skyrmions, which may contribute to the applications in magnonics.
Hierarchically structured nitrogen‐doped carbon nanotube (NCNT) composites, with copper (Cu) nanoparticles embedded uniformly within the nanotube walls and cobalt oxide (CoxOy) nanoparticles ...decorated on the nanotube surfaces, are fabricated via a combinational process. This process involves the growth of Cu embedded CNTs by low‐ and high‐temperature chemical vapor deposition, post‐treatment with ammonia for nitrogen doping of these CNTs, precipitation‐assisted separation of NCNTs from cobalt nitrate aqueous solution, and finally thermal annealing for CoxOy decoration. Theoretical calculations show that interaction of Cu nanoparticles with CNT walls can effectively decrease the work function of CNT surfaces and improve adsorption of hydroxyl ions onto the CNT surfaces. Thus, the activities of the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are significantly enhanced. Because of this benefit, further nitrogen doping, and synergistic coupling between CoxOy and NCNTs, Cu@NCNT/CoxOy composites exhibit ORR activity comparable to that of commercial Pt/C catalysts and high OER activity (outperforming that of IrO2 catalysts). More importantly, the composites display superior long‐term stability for both ORR and OER. This simple but general synthesis protocol can be extended to design and synthesis of other metal/metal oxide systems for fabrication of high‐performance carbon‐based electrocatalysts with multifunctional catalytic activities.
Nitrogen‐doped carbon nanotubes (NCNTs), with copper (Cu) nanoparticles embedded uniformly within their walls and cobalt oxide (CoxOy) nanoparticles decorated on their surfaces, are controllably synthesized via a rationally designed multistep procedure. The resultant Cu@NCNT/CoxOy composites exhibit electrocatalytic activity comparable to that of commercial Pt/C catalysts for the oxygen reduction reaction and activity higher than that of IrO2 catalysts for the oxygen evolution reaction.
Abstract
We report the resonance excitations and the spin-wave modes of a single bimeron in a confined nanodot by using micromagnetic simulations. Magnetic bimerons can be considered as in-plane ...topological spin textures of magnetic skyrmions, which means that the spin-wave modes of bimerons also rotate in-plane compared to skyrmions, for example, through the application of out-of-plane microwave magnetic fields, the spin-wave mode of bimerons is no longer a breathing mode but contains a counterclockwise mode at low frequencies and a clockwise mode at high frequencies. When in-plane microwave magnetic fields rotated at different angles are applied, the spin-wave mode of bimerons has an anisotropic property, i.e., the spin-wave mode presents as a breathing mode for the microwave magnetic field applied along the
x
-direction, and a couple of azimuthal modes for the microwave magnetic field applied along the
y
-direction. Moreover, we demonstrate that the breathing mode, the counterclockwise rotation mode, and the clockwise rotation mode can simultaneously appear together when the microwave magnetic field is applied at a specific angle in the plane. In addition to the three typical spin-wave modes, two high-phase counterclockwise rotation modes lead to the periodic deformation of bimerons due to the broken rotational symmetry of the spin texture. Our results reveal the rich spin-wave modes of bimerons, which may contribute to the applications in spintronics and magnonics.
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