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This study aims to empirically investigate how sport media consumption influences the relationships among the spatially explicit risks of COVID-19, resilience, and positive and negative affect, considering social class. To achieve this, we employed an integrated approach using spatial and aspatial analyses. The findings indicated that the negative effects of the spatially explicit risks of COVID-19 on resilience are mitigated by sport media consumption. In turn, an increased level of resilience enhances positive affect and reduces negative affect. Moreover, consumers in the upper class showed a more pronounced resilience process through sport media consumption than those in the lower class. This study contributes to the knowledge regarding the sport−resilience association by identifying the moderating effect of sport media consumption within social classes and addressing the spatially explicit risks of COVID-19. The present findings provide a basis for sport-based resilience strategies in times of adversity.

In order to provide high-quality sport events and cultivate economic, social, and environmental benefits in the local community, regional sport commissions in the US form partnerships with organizations across sectors. Building on Parent and Harvey's partnership framework, this study seeks to reveal the components and processes of the collaboration between sport commissions and their partners in the delivery of sport events and subsequent outcomes. Using purposive and convenient sampling, data were collected from 12 in-depth interviews with leaders in sport commissions and partnering organizations based on their accessibility and familiarity with the research topic. The study identifies five main areas and multiple subcomponents of event-based partnerships, providing empirical evidence for Parent and Harvey's partnership model. The findings advance this model by specifying the outcomes, challenges, and positive conditions for event-based partnerships and showing interactions between partnership components. More importantly, the findings contribute to a greater understanding of the partnership complexities and dynamics in the sport event-specific context and provide practical insights for sport commissions and other sport event organizers to strategically manage and maintain sport event-based partnerships.

By analysing the recent emerging labour movement of Korean digital game workers, this article seeks to explore a relatively novel issue – the importance of a politics of body in digital labour. By employing Elaine Scarry’s concept of ‘language of agency’ and ‘analogical substantiation’, the article first investigates how digital game workers express their work experiences and their embodied pain by analysing the mechanism of ‘crunch’ practice. Second, by examining ‘karoshi (overwork to death)’ and a series of suicides of digital game workers in Korea, it seeks to explore the problem of death as the final form of bodily pain – focusing on how these death events led workers to develop new forms of politics and solidarity by organising labour unions. Finally, by analysing the newly established digital game worker unions’ opposition to the violation of worktime regulation as a ‘struggle for recognition’, this research illuminates how digital game workers not only acquire self-respect but also achieve social recognition for their bodies as working labour. By examining this labour union organisation practice in Korea, the study ultimately argues that recognising the politics of body in digital labour offers the possibility that an emerging social category of precariat can actually co-exist and connect with the existing social class of proletariat.

In this article, we study the post-annealing effect on the synaptic characteristics in Pd/IGZO/SiO

This study proposes a model of mobility and negative bias stress stability degradation mechanism of zinc oxynitride (ZnON) thin-film transistors (TFTs) with various anion compositions. The subgap density of states (DOS) for ZnON TFTs were extracted using monochromatic photonic capacitance–voltage measurement. The extracted subgap DOS indicated an additional nitrogen-related subgap peak was observed in ZnON TFTs with an excessive nitrogen condition, which might originate from a nitrogen divacancy formation. Furthermore, the shifted threshold voltage components after the bias stress test were quantitatively divided as subgap DOS and interface trapping.

Sunlight-based desalination is one of the most environment-friendly, low-cost methods for obtaining freshwater on the planet. We implemented a biomimetic three-dimensional (3D) solar evaporator, improved by a solar-induced air-flow updraft. A carbon-coated polyvinyl alcohol (PVA) foam allowed us to achieve perfect absorption of ultrabroadband sunlight and continuously provide water to tall 3D structures. Integrating the convection flower (Amorphophallus titanum) and solar chimney structure, we proposed a bio-inspired 3D solar evaporator system that generates an updraft airflow. This updraft replaces saturated vapor between neighboring PVA foams with dry air, resulting in a significant increase in the effectiveness of dry air-water contact interfaces. Under the 1 sun condition (1 kW m-2), we achieve a high solar-vapor conversion efficiency of 95.9%.

Here, highly transparent nanocomposite films with an adjustable refractive index were fabricated through stable dispersion of ZrO

Hardware-oriented neuromorphic computing is gaining great deal of interest for highly parallel data processing and superb energy efficiency, as the candidate for replacement of conventional von Neumann computing. In this work, a novel synaptic transistor constructing the neuromorphic system is proposed, fabricated, and characterized. Amorphous indium-gallium-zinc-oxide ( $\alpha $ -IGZO) and Al2O3 are introduced as the channel and gate dielectric materials, respectively. Along with the high functionality and low-temperature processing viability, geometric peculiarity featuring extended gate structure improves the performances of the proposed transistor as synaptic component in the neuromorphic system. The insight into the substantial effect of optimal device structure design on energy efficiency is highlighted.

In South Korea since the mid-2010s, the discourse on giraegi has prevailed. The word giraegi is a combination of gija, the Korean word for journalist, and tsuraegi, the Korean word for trash. By considering this distinctive discourse on giraegi as a negative emotional form of anti-press discourse, this paper explores the background logics and rationales behind the giraegi discourse that classifies journalists as trash, by focusing on the case of the networked public of # giraegi. Its analysis reveals that certain negative emotions toward the press – disgust, hate, and shame – are the sources of the formation and maintenance of the networked public of # giraegi and also the energy that directs the flow of their hostile messages about journalists and journalism. Moreover, journalists are considered ‘pollutants’ that tarnish Korean society and thereby something that needs to be eliminated. In connection with the growing research on hate speech against journalists on digital media, this research ultimately argues that this affective form of anti-journalistic discourse – mainly focusing on hate, disgust, and shame – can hardly bring about normative and constructive effects; its probable impact will be to exacerbate distrust and skepticism toward journalists and journalism itself.

Leisure-time physical activity (LTPA) is an important means of enhancing well-being. Although previous research has typically documented the cross-sectional associations between LTPA and well-being...

This article is part of the special issue Creative Labor in East Asia. By exploring specific politico-economic and institutional, conditions promoting actually existing precarity in Korean digital game labor, this study aims to examine how the industrial and institutional conditions of precarity affect digital game workers’ subjectivity. Under this theoretical and empirical consideration, the study first delineates how the rapid industrial transition to the mobile game market happens in relation to the Korean government’s deregulation policy on that particular market. It then scrutinizes the ways in which this industrial shift deepens labor precarity, promotes degradation of skills, and ultimately fragments workers in the digital game industry. Based on this structural analysis, it argues that the fragmented industrial structure of the digital game industry in Korea not only actually fosters contrasting labor subjectivities but also promotes fragmented resistances among Korean digital game workers. By critically evaluating both possibilities and limitations of the recent firm-centered union movements created by digital game workers, the study ultimately concludes that finding a way to connect organized unions to unorganized freelance workers is absolutely necessary to actually transform “precarity” into “solidarity.”

A newly developed nanopatterned broadband antireflective (AR) coating was fabricated on the front side of a glass/indium tin oxide/perovskite solar cell (PSC) by depositing a single interference layer onto a two-dimensional (2D)-patterned moth-eye-like nanostructure. The optimized developed AR nanostructure was simulated in a finite-difference time domain analysis. To realize the simulated developed AR nanostructure, we controlled the SiO2 moth-eye structure with various diameters and heights and a MgF2 single layer with varying thicknesses by sequentially performing nanosphere lithography, reactive ion etching, and electron-beam evaporation. Optimization of the developed AR nanostructure, which has a 100 nm-thick MgF2 film coated onto the SiO2 moth-eye-like nanostructure (diameter 165 nm and height 400 nm), minimizes the reflection loss throughout the visible range. As a result, the short-circuit current density (JSC) of the newly AR-coated PSC increases by 11.80%, while the open-circuit voltage (VOC) remains nearly constant. Therefore, the power conversion efficiency of the newly developed AR-decorated PSC increases by 12.50%, from 18.21% for a control sample to 20.48% for the optimum AR-coated sample. These results indicate that the newly developed MgF2/SiO2 AR nanostructure can provide an advanced platform technology that reduces the Fresnel loss and therefore increases the possibility of the commercialization of glass-based PSCs.

Amorphous oxide semiconductor transistors control the illuminance of pixels in an ecosystem of displays from large-screen TVs to wearable devices. To satisfy application-specific requirements, oxide semiconductor transistors of various cation compositions have been explored. However, a comprehensive study has not been carried out where the influence of cation composition, oxygen, and hydrogen on device characteristics and stability is systematically quantified, using commercial-grade process technology. In this study, we fabricate self-aligned top-gate structure thin-film transistors with three oxide semiconductor materials, InGaZnO (In/Ga/Zn = 1:1:1), In-rich InGaZnO, and InZnO, having mobility values of 10, 27, and 40 cm

In this article, we study the post-annealing effect on the synaptic characteristics in Pd/IGZO/SiO2/p+-Si memristor devices. The O-H bond in IGZO films affects the switching characteristics that can be controlled by the annealing process. We propose a switching model based on using a native oxide as the Schottky barrier. The barrier height is extracted by the conduction mechanism of thermionic emission in samples with different annealing temperatures. Additionally, the change in conductance is explained by an energy band diagram including trap models. The activation energy is obtained by the depression curve of the samples with different annealing temperatures to better understand the switching mechanism. Moreover, our results reveal that the annealing temperature and retention can affect the linearity of potentiation and depression. Finally, we investigate the effect of the annealing temperature on the recognition rate of MNIST in the proposed neural network.

In this study, we analyzed the threshold voltage shift characteristics of bottom-gate amorphous indium-gallium-zinc-oxide (IGZO) thin-film transistors (TFTs) under a wide range of positive stress voltages. We investigated four mechanisms: electron trapping at the gate insulator layer by a vertical electric field, electron trapping at the drain-side GI layer by hot-carrier injection, hole trapping at the source-side etch-stop layer by impact ionization, and donor-like state creation in the drain-side IGZO layer by a lateral electric field. To accurately analyze each mechanism, the local threshold voltages of the source and drain sides were measured by forward and reverse read-out. By using contour maps of the threshold voltage shift, we investigated which mechanism was dominant in various gate and drain stress voltage pairs. In addition, we investigated the effect of the oxygen content of the IGZO layer on the positive stress-induced threshold voltage shift. For oxygen-rich devices and oxygen-poor devices, the threshold voltage shift as well as the change in the density of states were analyzed.

Solar steam generation is a promising solar energy harvesting technology to address the global clean energy and water deficiency cost-effectively. In this work, we present a compact plasmonic nanostructure-nanoparticle composite based on haze/GO-rGO/Au enabling multiple purposes such as broadband solar absorption, solar steam generation, and solar desalination. The graphene oxide-reduced GO (GO-rGO) combination allows broadband optical absorption, and the presence of 5 nm Au nanoparticles creates high-density localized hotspots for enhanced photothermal effect as evidenced through Raman signal enhancement studies. Anodized aluminum oxide-based haze nanostructures provide maximum light interaction volume through multiple nanogaps and porosity through vertically aligned nanowires of 20-26 nm width and 5-10 μm depth for water channelization. The haze sample coated with GO-rGO/Au shows high solar absorbance of 92.5% over the 300-2500 nm wavelength range covering the whole solar spectrum (ultraviolet-visible-near-infrared). We have achieved 50 and 71.1% of solar-to-thermal conversion efficiencies in a single-layer microscale sample for saline and freshwater, respectively, with a maximum surface temperature of 95.7 °C. The efficiencies increase to 64 and 77% for two layers of the sample at 5 suns (5 kW m-2) illumination.

Background: The examination of the longitudinal effect of leisure-time physical activity (LTPA) on mental well-being is important, but previous studies have typically been limited by their use of a cross-sectional approach. This study empirically examined how LTPA intensity was associated with changes in distinct functions of mental well-being (eg, emotional, psychological, social) over time, and vice versa. Methods: Parallel latent growth curve modeling in combination with propensity score matching analysis was conducted. Data were derived from a sample of adults from the Midlife in the United States (MIDUS) study. Results: The results showed that the initial level of moderate LTPA at the baseline was associated with growth in psychological and social functioning over time, and vice versa. However, vigorous LTPA at the baseline was related only to growth in emotional functioning over time. Conclusion: The longitudinal association between LTPA and mental well-being had different matching mechanisms for LTPA intensities and their relation to distinct functioning for mental well-being. The findings contribute to an enhanced understanding of LTPA’s longitudinal effect on mental well-being.

This study aims to reconsider and re-evaluate the rapid circulation of global creative city policy from the viewpoint of its creative workforce by focusing on the case of Yokohama, Japan. To shed l...

A newly developed nanopatterned broadband antireflective (AR) coating was fabricated on the front side of a glass/indium tin oxide/perovskite solar cell (PSC) by depositing a single interference layer onto a two-dimensional (2D)-patterned moth-eye-like nanostructure. The optimized developed AR nanostructure was simulated in a finite-difference time domain analysis. To realize the simulated developed AR nanostructure, we controlled the SiO

Solar thermoelectric generators (STEGs), which convert solar thermal energy into electricity, are studied as an environmentally friendly energy source. The unique properties of aerogels (i.e., high thermal insulation and solar light transmission) are essential factors in the solar-receiving components of STEGs. Herein, STEG power generation is enhanced through optical and thermal management using a highly transparent aerogel window. The aerogel window (thickness: 5 mm) exhibits an extremely low thermal conductivity and a high solar transmittance of 96.5%, higher than that of soda-lime glass (89.9% at 0.5 mm thickness) in the wavelength range of 300–2500 nm. Furthermore, we use a copper oxide (CuO) nanoflake structure as a cost-effective solar absorber for the STEG. Under 1-sun (1 k W m−2) illumination, power generation of the STEG with the aerogel window is 21% and 17% higher than that of glass-covered and uncovered STEGs, respectively. To demonstrate the performance of aerogel in an open environment, we measure the power generation of aerogel-covered, glass-covered, and uncovered STEGs under wind conditions. Under 1-sun illumination and a wind speed of 3 m s−1, the power generation of the STEG with the aerogel window is 54% and 71% higher than that of glass-covered and uncovered STEGs, respectively.

This study aims to reconsider and re-evaluate the rapid circulation of global creative city policy from the viewpoint of its creative workforce by focusing on the case of Seoul, South Korea. By loc...

While research on building-integrated photovoltaics (BIPVs) has mainly focused on power-generating window applications, the utilization of other underutilized surface areas in buildings, including exteriors, facades, and rooftops, has still not been fully explored. The most important requirements for BIPVs are color, power conversion efficiency (PCE), and long-term stability. In this work, we achieved colorful (red, green, blue, RGB) perovskite solar cells (PSCs) with minimized PCE loss (10%) and enhanced photostability by exploiting the optical properties of nonperiodic multi-nanolayer, narrow-bandwidth reflective filters (NBRFs). The NBRFs were fabricated by multilayering high-index TiO

Colorful Cu(In,Ga)(S,Se)

In this study, we analyzed the threshold voltage shift characteristics of bottom-gate amorphous indium-gallium-zinc-oxide (IGZO) thin-film transistors (TFTs) under a wide range of positive stress voltages. We investigated four mechanisms: electron trapping at the gate insulator layer by a vertical electric field, electron trapping at the drain-side GI layer by hot-carrier injection, hole trapping at the source-side etch-stop layer by impact ionization, and donor-like state creation in the drain-side IGZO layer by a lateral electric field. To accurately analyze each mechanism, the local threshold voltages of the source and drain sides were measured by forward and reverse read-out. By using contour maps of the threshold voltage shift, we investigated which mechanism was dominant in various gate and drain stress voltage pairs. In addition, we investigated the effect of the oxygen content of the IGZO layer on the positive stress-induced threshold voltage shift. For oxygen-rich devices and oxygen-poor devices, the threshold voltage shift as well as the change in the density of states were analyzed.

Metallic nanostructure-based solar absorbers are widely used owing to their controllable range of absorption wavelengths and various potential applications. Metal-versatile solar absorbers that are not limited to noble metals are essential to reduce production costs. In this study, broadband solar absorbing surfaces were fabricated based on Ni or Au-deposited self-aggregated alumina nanowire structures. A high solar absorptance was obtained for both the Ni-deposited nanowire structures (~0.90) and Au-deposited nanowire structures (~0.92), indicating the advantage of using nickel instead of the noble metal. These high solar absorptance were theoretically analysed by comparing the electric field distributions obtained from finite-difference time-domain (FDTD) simulations and the dielectric functions of Ni and Au. In addition, efficient solar steam generation platform was designed using these broadband solar absorbers and aerogel thermal insulator. The solar steam generation efficiency was improved through heat localisation using an aerogel as a thermal insulator and a polyvinyl alcohol (PVA) sponge as a water supplier. The efficiencies of the solar steam generation platforms using black Ni and Au films under an illumination of 5 kW m−2 were 83.8% and 78.3%, respectively.